36results about How to "Enhance horizontal linkages" patented technology

The invention relates to an assembly type hollow slab bridge adopting a bracket to replace a ribbet to transmit force, comprising a side slab and a middle slab of an assembly type hollow slab, wherein which the side slab and the middle slab of an assembly type hollow slab are mutually matched, a part or all of the top slab of the middle slab of the assembly type hollow slab extends towards one side to form a prominent bracket, and a combination part of a web slab and the top slab at the other side is provided with a bracket supporting surface matched with the bracket; and the top slab at one side of the side slab of the assembly type hollow slab is provided with a bracket matched with the bracket supporting surface of the middle slab of the assembly type hollow slab, or the combination part of the web slab and the top slab at one side of the side slab of the assembly type hollow slab is provided with a bracket supporting surface matched with the bracket of the middle slab of the assembly type hollow slab. The force transmission mode by adopting the bracket structure to transmit shearing force is clear, can be used for transmitting the shearing force between adjacent hollow slabs along the transverse direction of the bridge, improving the transverse connection between the assembly type hollow slabs and homogenizing the transverse load distribution and has the advantages of simple structure, mature design and calculation, no need of changing the bridge deck pavement and simple and convenient construction.

A single-box multi-chamber box girder bridge include that substructure lower structure, single box and multi-chamber box girder, cast-in-place deck, transversely prestressed steel strand, a first longitudinally prestressed steel strand and a second longitudinally prestressed steel strand, Single box multi-chamber box girder includes two precast side beams and a plurality of interconnected precastmiddle beams between the two precast side beams. The precast side beams and the precast middle beams of I-beam structure can reduce the requirements of lifting equipment and the construction cost of single box multi-chamber box girder bridge in the hoisting construction. The first longitudinally prestressed steel strand and the second longitudinally prestressed steel strand improve the mechanicalstate of the middle and lower parts of the prefabricated side beam and the prefabricated middle beam, respectively; Prefabricated side beams and prefabricated middle beams are prefabricated parts, which have the characteristics of high quality concrete, beautiful appearance and light weight. The invention also provides a construction method of a single-box multi-chamber box girder bridge, which can ensure the stability, safety and convenience of the installation of the single-box multi-chamber box girder bridge.

The invention discloses an electric power material prediction method. Material data is arranged, and then, a horoscop and an ARIMA (Autoregressive Integrated Moving Average) model are used for prediction. The electric power material is predicted, the horizontal linkage of the materials of a power grid company is reinforced, the construction of a smart supply chain is powerfully accelerated, a situation that materials are wasted and idle is lowered, material management efficiency is improved, the satisfaction of staff is improved, and valuable experience is provided for the material managementwork of China Southern power grids.

The invention belongs to the technical filed of construction of hollow slab bridges and particularly discloses an integrated assembly type hollow slab bridge and a construction method thereof. The integrated assembly type hollow slab bridge comprises two hollow slab edge plates which are oppositely arranged; hollow slab middle plates are laid between the two hollow slab edge plates continuously; tongue-and-groove seam concrete is arranged between the adjacent hollow slabs; a plurality of shear resistant blocks are arranged on the bilateral sides of the tongue-and-groove seam concrete along the slab height; the shear resistant blocks which are longitudinally continuous are groove-shaped or protruding-edge-shaped; the groove-shaped shear resistant blocks and the protruding-edge-shaped shear resistant blocks are alternately arranged when the number of the shear resistant blocks is more than two. The construction method comprises determining the number and the shape of the tongue-and-groove seam shear resistant blocks according to the design requirements; forming the grooves or the protruding edges which are longitudinally continuous on the inner sides of formworks which are arranged at the positions of tongue-and-groove seams along the slab height correspondingly; precasting the hollow slabs, hoisting the hollow slabs and performing cast-in-site construction on the tongue-and-groove seam concrete. According to the integrated assembly type hollow slab bridge and the construction method thereof, the practicability is strong, the construction is convenient, the shear resistance between the hollow slabs can be improved, and the integral mechanical performance of the hollow slab bridge can be improved.

The invention discloses an assembly-type beam body. The assembly-type beam body comprises multiple precast box beam bodies and pre-stressed reinforcing bars connected with the multiple precast box beam bodies. The precast box beam bodies are provided with transverse pre-stressed ducts. The pre-stressed reinforcing bars pass through the transverse pre-stressed ducts of the precast box beam bodies and two ends of each transverse pre-stressed duct are fixed through anchor plates. Non-contract concrete is poured between each pre-stressed reinforcing bar and each transverse pre-stressed duct. When the multiple precast box beam bodies are connected, the pre-stressed reinforcing bars pass through the transverse pre-stressed ducts and the anchor plates are installed. After the pre-stressed reinforcing bars are tensioned, grouting operation is performed. The assembly-type beam body has the following beneficial effects: transverse connection among the beam bodies is enhanced; and stress of hinge joints is reduced.

A method for strengthening a truss arch bridge comprises the steps that (1) a cracked crack is grouted and sealed; (2) an original bridge concrete bridge deck pavement layer is chiseled and removed, an original truss arch bridge face plate is demounted, and a reinforced concrete overall bridge face plate with the thickness of 30cm is cast in situ again; (3) handrails are strengthened; (4) diaphragm plates are added; (5) the cross sections of arc rib components are enlarged, the cross sections of arch rib lower chords and the cross sections of web members are enlarged, steel bars are embedded on the arch rib side, a reinforcing mesh is assembled, and concrete is poured. According to the method for strengthening the truss arch bridge, transverse connection is increased, the integrity of the structure is improved, and the service life of bridges can be prolonged effectively.

The invention discloses an expressway T-beam widening structure and method in an operation state. The problem that in the prior art, it is difficult to guarantee the integrity of new and old bridges through a bridge widening method is solved. The expressway T-shaped beam widening structure in the operating state has the beneficial effects that the transverse connection between an old T-shaped beamand a new T-shaped beam is remarkably improved, and the construction quality is guaranteed. The expressway T-shaped beam widening structure in the operating state comprises the new T-shaped beam arranged on one side of the old T-shaped beam; a first connecting structural part which is connected with an old T-shaped beam flange plate and a new T-shaped beam flange plate; and a second connecting structural part which comprises a plurality of prestress first reinforcing steel bars connected between an old T-shaped beam web and a new T-shaped beam web and second reinforcing steel bar nets arranged between the first reinforcing steel bars, wherein second concrete is poured between third reinforcing steel bar nets formed by the first reinforcing steel bars and the second reinforcing steel bar nets.

The invention provides a hollow slab bridge structure enhancing transverse rigidity, and belongs to the technical field of bridge engineering. According to the technical method, a transverse bridge direction pre-stress rib pipeline is reserved on a bottom plate of each prefabricated plate. Full hinge joints are arranged between the prefabricated plates, and in other words, the height of the hinge joints is equal to that of the prefabricated plates. Meanwhile, the structure of the full hinge joints makes the interval between the bottoms of the prefabricated plates become larger, so that transverse pre-stress ribs are constructed smoothly. In addition, flat anchorage devices are adopted for the transverse pre-stress ribs, and the requirement for the thickness of the bottom plates of the prefabricated plates can be effectively lowered. By the application of the design method, compared with common hinge joints, the resistance to shearing of the hinge joints is better. In cooperation with the transverse pre-stress ribs, transverse linkage of a hollow slab bridge is further enhanced; meanwhile, the transverse pre-stress ribs can effectively balance transverse bending moment.

The invention relates to a hinge joint hollow slab beam bridge and a transverse unbonded post-tensioning prestress construction technology thereof. The hinge joint hollow slab beam bridge comprises a plurality of hollow slabs which are spliced together, a plurality of through holes are evenly distributed in the lower portion of the side wall of each hollow slab in the length direction of the corresponding hollow slab, and stranded steel wires are arranged in the through holes. The hinge joint of every two adjacent hollow slabs is filled with concrete. A plurality of transverse reinforcements and a plurality of longitudinal reinforcements are evenly laid on the upper surfaces of the hollow slabs, and the upper surfaces of the hollow slabs are further covered with a concrete layer. On one hand, reinforcement treatment is conducted on the bridge deck pavement, tensile strength of the pavement is reinforced, the synergistic effect on beam bodies is enhanced, and the integral rigidity is enhanced; on the other hand, because the transverse unbonded post-tensioning prestress construction technology is adopted for the hinge joint hollow slab beam bridge, the transverse linkage between beams of the hollow slab beam bridge is reinforced, meanwhile, the strength of the concrete of the hinge joints is enhanced under the action of prestress, cracks of the hinge joints can be effectively prevented, and the single-slab stress phenomenon which is unfavourable to the structure is prevented.

The invention discloses a bridge wet joint reinforcing device. The device comprises a contact steel plate, reinforcing steel plates and chemical anchor bolts; the two side faces of the contact steel plate are connected with a main beam web through the chemical anchor bolts; the top face of the contact steel plate is connected with a main beam flange plate and a wet joint through the chemical anchor bolts; the inclined face of the contact steel plate is connected with a main beam bearing; the reinforcing steel plates are fixed to the contact steel plate so as to form parallel T-shaped beams. According to the device and mounting method of the invention, symmetrical bolt holes are distributed in the contact steel plate; the contact steel plate is connected with a leveled main beam through thechemical anchor bolts; the contact steel plate and the reinforcing steel plates are connected through fillet welds; the multiple sets of reinforcing steel plates and the contact steel plate form parallel T-shaped beams; and such a structure can effectively improve the bearing capacity of the wet joint of a bridge, reinforce the transverse connection of the bridge and improve the integrity of thebridge, and has the advantages of environmentally friendly and rapid construction, wide applicability and good economical efficiency.

The invention discloses a method for reinforcing connection of a diaphragm plate and a girder by aid of penetrating type prestress. The method comprises steps as follows: (1) positions of additionally arranged prestress steel strands are determined on the diaphragm plate and a girder web, and then, holes are drilled in the girder web and the diaphragm plate to form mounting channels for prestress steel strands; (2) slots are formed in two ends of each mounting channel, and stress-dispersing steel cushion plates are mounted in the slotted positions; (3) the prestress steel strands penetrate through the channels in the girder and the diaphragm plate; steel strand anchoring devices are mounted; steel strands are tensioned. After external prestress is added between the girder and the diaphragm plate, connection between the girder and the diaphragm plate is effectively enhanced, so that the diaphragm plate prestores certain press stress when not bearing load of a vehicle, pulling stress produced under constant action of vehicle load is overcome, the cracking resistance of the diaphragm plate is effectively improved, the rigidity of the diaphragm plate is improved, the horizontal linkage is enhanced, and the overall stressing performance of a bridge is effectively improved.

The invention discloses a method for improving bearing capacity of a multi-target-oriented existing hollow slab girder bridge, and relates to a bridge bearing capacity improving method. An original bridge deck pavement is dismantled; a hollow slab beam bottom is longitudinally and continuously pasted with a seam-spanning type composite plate; a gradual change type rigidity calculation model for connection between the bridge deck pavement and a main beam is established, the arrangement range of rigid connecting pieces and flexible connecting pieces is determined, and corresponding arrangement is carried out; a double-layer stressed reinforcing mesh is laid and fixed above the hollow slab; and a concrete pavement layer is poured, and non-uniform rigid-flexible mixed connection is achieved. The bridge deck pavement is calculated according to a gradual change type rigidity calculation model, the bridge deck pavement and the hollow slab beam are effectively combined and connected through anon-uniform rigid-flexible mixed connection method, and the joint-spanning type combined plate is longitudinally and continuously pasted to the hollow slab beam bottom. Longitudinal bending resistance, longitudinal shear resistance, transverse bending resistance and transverse shear resistance bearing capacity of an existing hollow slab girder bridge are effectively improved.

The invention relates to the technical field of bridge construction, in particular to a single-hole prefabricated hollow slab non-expansion-joint bridge and a construction method thereof. The bridge comprises abutments, prefabricated hollow slabs, end crossbeams and reinforcing steel bars connecting the prefabricated hollow slabs with the end crossbeams. Each abutment comprises an abutment cap anda pile foundation arranged below the abutment cap. Support cushion stones are arranged on the upper surfaces of the abutment caps. Rubber spacers are arranged on the upper surfaces of the support cushion stones. The prefabricated hollow slabs are arranged on the rubber spacers side by side in the transverse bridge direction and provided with end cap boards for covering cavities of the prefabricated hollow slabs, wherein the end cap boards are arranged at the ends of the prefabricated hollow slabs. The bridge has the beneficial effects that the structural design is simple, the construction method is simple and convenient to implement, the end crossbeams in the transverse bridge direction can be cast in place at the ends of the prefabricated hollow slabs so that transverse prestress can beapplied to the solid portions of mid-span portions of the prefabricated hollow slabs, the transverse relation between the prefabricated hollow slabs is reinforced, and the integrity of the whole bridge is improved.

The invention discloses a hinge joint reinforcing and maintaining method and a reinforcing and maintaining device. The hinge joint reinforcing and maintaining method comprises the following steps that1, forming a notch in the position of a hinge joint; 2, drilling a vertical through hole in the hinge joint; 3, arranging an upper anchoring plate at the notch, a lower anchoring plate is arranged atthe position, corresponding to the notch, below the plate beam, arranging a counter pull rod between the upper anchoring plate and the lower anchoring plate, the counter pull rod penetrates through the upper anchoring plate and the lower anchoring plate and is arranged in the vertical through hole, and then fastening the counter pull rod, the upper anchoring plate and the lower anchoring plate; 4, repairing the notch; 5, sealing the bottom of the hinge joint; and 6, injecting glue. The reinforcing maintenance device is additionally arranged, so that the transverse connection between the platebeams is enhanced, the stress state of the single beam is weakened, the vibration of the beam plate is avoided, and the cracking and discretization of the crack repairing adhesive are avoided.

The invention belongs to the technical field of bridge building and construction and discloses a truss supporting and reinforcing method for a pile type bridge abutment. The pile type bridge abutment comprises bridge abutment foundation piles and an abutment capping arranged on the bridge abutment foundation piles. The truss supporting and reinforcing method comprises the following steps: a, digging a revetment in front of the abutment, forming grooves, and arranging new foundation piles in the grooves; b, connecting the upper parts of all of the new foundation piles by a transverse connecting beam; c, constructing so as to form diagonally braced skeletons and longitudinal connecting beam skeletons; d, forming longitudinal connecting beams and diagonal bracings; and e, filling the grooves formed in the step a with soil so as to fill notches of the revetments in front of the abutment. By combining the structural characteristics of the pile type bridge abutment, the problems that the bearing capability of the pile type bridge abutment is low, the push resisting rigidity of the bridge abutment is small, the bridge abutment easily tilts towards the river center side and the piles (pillars) easily crack are solved. When the bearing capability of the foundation piles is improved, the push resisting rigidity of the bridge abutment is greatly enhanced, and the stability of the bridge abutment is improved.

The invention provides a hollow slab beam shear-resistant reinforcing method and a hollow slab beam shear-resistant reinforcing device. The hollow slab beam shear-resistant reinforcing method comprises the steps that: a sunken area is arranged at the upper end of a bridge; at least one through hole is formed in a hinge joint of a hollow slab beam of the bridge, and the through hole is communicated with the sunken area; an upper connecting piece is fixedly arranged in the sunken area, and a lower connecting piece is fixedly arranged at the lower end of the bridge; an opposite-pull rod is arranged in the through hole, and the two ends of the opposite-pull rod are fixedly connected to the upper connecting piece and the lower connecting piece respectively; and the sunken area is repaired. According to the invention, the upper connecting piece, the lower connecting piece and the opposite-pull rod form a reinforcing assembly, so that the transverse connection between a slab and a beam can be enhanced, the stress state of a single beam is weakened, the vibration of the beam and the slab is avoided, and the cracking and discretization of a crack repairing adhesive are avoided.

The invention discloses a high-polymer grouting reinforcement anti-settlement widened roadbed, which is characterized in that a geotechnical pipe network is installed; the geotechnical pipe network is a rectangular grid which is formed by PVC (polyvinyl chloride) pipes in array distribution; the PVC pipes in the rectangular grid communicate with each other; grouting holes and exhaust holes which upwards and convexly extend, and slurry passing holes which downwards and convexly extend are formed in the geotechnical pipe network; the geotechnical pipe network is laid in a soil filling layer to form a soil filling layer geotechnical pipe network; high-polymer slurry is injected into the soil filling layer geotechnical pipe network through the grouting holes to form a soil filling layer grouting geotechnical pipe network; the high-polymer slurry is injected into vertical column holes in the soil filling layer through the slurry passing holes to form vertical reinforcing columns. The transverse connection of new and old roadbeds is enhanced; the differential settlement is effectively controlled; the combination of new and old roadbeds is more stable and firmer; sliding collapse cannot easily occur.

The invention discloses a lower bearing type steel plate girder bridge and relates to the field of bridge reinforcement. The lower bearing type steel plate girder bridge comprises a bridge body, the bridge body comprises two main longitudinal beams and a cross beam located between the two main longitudinal beams, the main longitudinal beams comprise webs, upper flange plates which extend horizontally are arranged at the tops of the web plates, and the bottoms of the webs are provided with horizontally extending lower flange plates. The girder bridge is characterized in that a transverse connecting plate is arranged at the bottom of the cross beam, the two ends of the transverse connecting plate are fixedly connected with two reinforcing assemblies respectively, and the bridge body abuts between the two reinforcing assemblies. According to the lower bearing type steel plate girder bridge, transverse connection between the main longitudinal beams can be enhanced, the transverse rigidity of the steel plate girder bridge is improved, and the steel plate girder bridge is safer and more reliable.

The invention relates to the technical field of bridge reinforcement, in particular to a method for reinforcing a hollow plate girder bridge by adopting corrugated steel plates and UHPC, which is characterized by comprising the following steps: treating the concrete surface of an original hollow plate girder bridge bottom plate (1), removing an original steel bar protective layer, and exposing steel bars (5) of an original structure; a corrugated steel plate (3) is prepared, welding studs (4) are arranged on the corrugated steel plate (3), the welding studs and reinforcing steel bars (5) of anoriginal structure are welded together, and then UHPC (2) is poured, so that the corrugated steel plate (3) and a hollow plate girder bridge bottom plate (1) are formed into a whole. The advantages of the corrugated steel plates (3) and the UHPC (2) are fully utilized and combined to be well used for reinforcing the hollow plate girder bridge, so that the hollow plate girder can better work cooperatively, the transverse integrity of the hollow plate girder bridge is enhanced, the service life of the hollow plate girder bridge is prolonged, the bearing capacity of the existing hollow plate girder bridge is enhanced, and the hollow plate girder bridge has wide application prospects.

The invention discloses a treatment structure at a joint part of a reconstruction and extrusion project of a highway. A step (6) is excavated at a roadbed joint part between an old road embankment (10) and a new roadbed (7) for splicing with the new roadbed (7), a geogrid (5) is laid on the step (6), a CFG (cement fly-ash gravel) pile (8) is arranged at the roadbed joint part between the old road embankment (10) and the new roadbed (7), a longitudinal beam (9) is arranged on the CFG pile (8), and a steel wire mesh is laid on a pavement joint part between the old road embankment (10) and the new roadbed (7) of a new pavement (4). The combination of the CFG pile (8) and the longitudinal beam (9) can improve the bearing force at the joint part between the new and the old roadbeds and reduce sedimentation; and the combination of the geogrid (5) and the double-twisted steel wire mesh (3) reinforcement pavement technology can enhance the transverse relation between the new roadbed and the old roadbed, eliminate the non-uniform sedimentation of the new and the old roadbeds and reduce the total sedimentation.

The invention discloses a shear reinforcement method for hollow slab girders based on high-performance composite materials. Open pouring holes on the roof of the reinforced section of the slab girder, chisel the concrete in the cavity of the reinforced section of the hollow slab beam through the pouring hole, and then seal the two ends of the cavity of the reinforced section of the hollow slab beam; Step 3: Drill and plant reinforcement holes, Plant shear reinforcement in the reinforcement hole; Step 4: Spray water on all existing concrete surfaces that need to be poured; Step 5: Use high-performance micro-expansion self-compacting concrete to pour from the pouring hole; Step 6: On the bridge deck Pave the reinforced mesh at the position of the leveling layer; step 7: pour the leveling layer with high-performance shrinkage-compensating concrete; step 8: pave the asphalt layer and open the traffic. The shear bearing capacity, shear stiffness and fatigue resistance of the reinforced structure of the invention are greatly improved.

The invention discloses a structure for reinforcing the transverse connection of hollow slab girders through steel hoops, which comprises hollow slab girder bodies, inter-beam holes are formed between the hollow slab girder bodies, ribbed upper hoops are arranged at the tops of the hollow slab girder bodies, upper fixing plates are welded on the inner sides of the ribbed upper hoops, and opposite-pulling anchor rods are welded on the inner sides of the upper fixing plates. A ribbed lower steel hoop and a movable plate are arranged at the lower end of the outer surface of the counter-pulling anchor rod in a sleeving mode, the top of the movable plate is welded to the bottom of the ribbed lower steel hoop, anchor bolt holes are formed in the left side and the right side of the ribbed lower steel hoop, and chemical anchor bolts are arranged on the inner sides of the anchor bolt holes. Through the effects of the ribbed upper hoop, the ribbed lower steel hoop, the upper fixing plate, the counter-pulling anchor rod, the movable plate, the anchor bolt hole, the inter-beam hole and the high-strength shrinkage-free slurry body, the problems that transverse connection of an existing hollow plate beam is scattered, the requirement for integrity of the hollow plate beam cannot be met, and then the service life of the hollow plate beam is shortened are solved.

The invention discloses a method for improving bearing capacity of a multi-target-oriented existing hollow slab girder bridge, and relates to a bridge bearing capacity improving method. An original bridge deck pavement is dismantled; a hollow slab beam bottom is longitudinally and continuously pasted with a seam-spanning type composite plate; a gradual change type rigidity calculation model for connection between the bridge deck pavement and a main beam is established, the arrangement range of rigid connecting pieces and flexible connecting pieces is determined, and corresponding arrangement is carried out; a double-layer stressed reinforcing mesh is laid and fixed above the hollow slab; and a concrete pavement layer is poured, and non-uniform rigid-flexible mixed connection is achieved. The bridge deck pavement is calculated according to a gradual change type rigidity calculation model, the bridge deck pavement and the hollow slab beam are effectively combined and connected through anon-uniform rigid-flexible mixed connection method, and the joint-spanning type combined plate is longitudinally and continuously pasted to the hollow slab beam bottom. Longitudinal bending resistance, longitudinal shear resistance, transverse bending resistance and transverse shear resistance bearing capacity of an existing hollow slab girder bridge are effectively improved.

The invention discloses a prestressed concrete slab girder bridge type and a construction method thereof. The prestressed concrete slab girder bridge type comprises the following components: a support which is arranged on a cover beam and is used for supporting prestressed concrete girders; the prestressed concrete girders which serve as a main bearing component and are in an inverted T shape, wherein the two ends of the prestressed concrete girder are placed on the support, and the upper surface of the prestressed concrete girder is covered with a cast-in-place reinforced concrete bridge deck, wherein the adjacent prestressed concrete girders are in lap joint through embedded connecting steel bars or connected through prefabricated concrete slabs, and the protruding steps of the prestressed concrete girders are filled and leveled up. According to a bridge example with a small clear distance between girders, connection between the prefabricated girders is achieved by lap joint of connecting steel bars of the adjacent girders and overall cast-in-place of bridge deck slabs; and for a bridge example with a large girder spacing, the use amount of templates required by cast-in-place of the bridge deck can be reduced by adopting the precast concrete slab, and the construction efficiency is further improved.

The invention discloses a construction method of a high-polymer grouting-reinforced antisettling widened roadbed. The method is characterized by arranging a geotechnical engineering pipe network; the geotechnical engineering pipe network is a rectangular grid composed of PVC (polyvinyl chloride) pipes arranged in an array mode; the PVC pipes in the rectangular grid communicate with each other; the inside of the geotechnical engineering pipe network is respectively provided with a grouting hole and a vent hole which extend convexly upwards, and a grout passing hole which extends convexly downwards; the geotechnical engineering pipe network is laid in the fill stratum to form the fill stratum geotechnical engineering pipe network; the high-polymer grout is injected into the fill stratum geotechnical engineering pipe network through the grouting hole to form the fill stratum grouted geotechnical engineering pipe network; and the high-polymer grout is also injected into the vertical column hole formed in the fill stratum through the grout passing hole to form the vertical reinforcing column. The method enhances the lateral communication between the new and old road embankments, and effectively controls the differential settlement, so that the new and old roadbeds are combined more firmly and can not easily slump.

The invention relates to a structure and method for reinforcing transverse linkage of a highway hollow slab bridge, which comprises a plurality of construction units; each construction unit comprises a hollow plate provided with perforated profile steel; a corrugated pipe penetrates through the profile steel opening; a steel strand penetrates through the corrugated pipe; the steel strand is anchored on the anchorage device; a reinforced concrete pavement layer, a waterproof layer and a bridge deck asphalt pavement layer are sequentially paved on the hollow slab from bottom to top; the multiple construction units are transversely spliced, and guardrails are arranged on the sides of the hollow plates at the two ends of the construction units. An anchorage device and an anchoring device stiffening steel plate are arranged in the guardrail. The invention has the beneficial effects that the transverse connection of the hollow slabs is enhanced by applying transverse prestress to the bridge floor, so that the beam slabs can be better cooperatively stressed, and the problem that the transverse connection is further weakened due to falling of hinge joints of the hollow slabs is solved; the construction is simple, the operation is easy, and few steps are added; the change is performed inside the bridge, so that the attractiveness of the bridge is not influenced; and the later bridge operation and maintenance cost is reduced.

The invention discloses a pre-stressing reinforced and widened bridge structure, which comprises an old bridge, a widening beam I and a widening beam II, wherein the widening beam I and the widening beam II are parallelly and respectively positioned on the two sides of the old bridge and are rigidly connected in the transverse direction with the old bridge; the two ends of a pre-stressing rope or a pre-stressing rib are transversely and respectively arranged outward and are upwards inclined, extended and anchored on the widening beam I and the widening beam II; and the pre-stressing rope or the pre-stressing rib is acted on the old bridge through a steering device. While being widened, the old bridge can be reinforced by the structure, the stress between the newly added part and the old bridge is balanced, the occurrence and the development of defects of the old bridge can be effectively inhibited, the structure and the construction of the bridge are relatively simple, the structure of the old bridge is not damaged, the structural performance is reliable after the old bridge is widened and reinforced, the construction period is relatively short, the influence on road traffic is relatively small, the damage to natural environment and the adverse influence on society when the old bridge is demolished are avoided, and very good comprehensive technical, economic and social benefits are achieved.

The invention discloses a high polymer grouting reinforcement and anti-settlement broadened roadbed for a high embankment. The high polymer grouting reinforcement and anti-settlement broadened roadbed is characterized in that an earthwork pipe network is arranged and is a rectangular grid formed by PVC pipes and arranged in an array mode, and the PVC pipes in the rectangular grid communicate with one another; the earthwork pipe network is internally provided with upward-protruding grouting holes and exhaust holes and downward-protruding grout-flow holes; and the earthwork pipe network is laid in a fill stratum to form a fill stratum earthwork pipe network, high polymer grout is grouted into the fill stratum earthwork pipe network through the grouting holes to form a fill stratum grouting earthwork pipe network, and the high polymer grout is further grouted into vertical column holes formed in the fill stratum through the grout-flow holes to form vertical reinforcement columns. According to the high polymer grouting reinforcement and anti-settlement broadened roadbed, the transverse relation between a new embankment and an old embankment is enhanced, differential settlement is effectively controlled, and a new roadbed and an old roadbed are combined more stably and not prone to collapsing.