50results about How to "Improve construction rate" patented technology

The invention discloses a frame-type curtain wall rapid assembly construction method and system based on a BIM, and belongs to the field of curtain wall assembly construction. The to-be-solved technical problems are how to realize rapid assembly construction of a frame-type curtain wall and ensure the installation quality and performance of the curtain wall, according to the technical scheme, theframe-type curtain wall rapid assembly construction method includes the steps that three-dimensional model creation and adjustment of a curtain wall shell, curtain wall unit division, material component splitting and ordering are conducted through a BIM technology and a three-dimensional measurement technology, unit bodies of the frame-type curtain wall are assembled through centralized industrialprocessing, the processing quality of the frame-type curtain wall units is controlled by manufacturing standard parts, standard samples and using a three-dimensional scanning technology, site quick assembly construction of the frame-type curtain wall is completed through an integral hoisting technology, then treatment between layers is completed through a construction hanging basket or an elevating operating vehicle, and finally, rapid assembly construction operation of the frame-type curtain wall is realized. The invention further discloses the frame-type curtain wall rapid assembly construction system based on the BIM.

The invention discloses a fusible high-performance elastomer modified asphalt waterproof roll. The fusible high-performance elastomer modified asphalt waterproof roll sequentially comprises a heat-sensitive fusible OPP (o-phenylphenol) isolating membrane, a fusible elastomer modified asphalt, a polyester reinforcement, fusible elastomer modified asphalt and a heat-sensitive fusible OPP isolating membrane from top to bottom. When the fusible high-performance elastomer modified asphalt waterproof roll is applied, the construction efficiency can be improved, the energy consumption is reduced, and the waterproof roll is energy-saving, environment-friendly and long in service life and has good economic benefits and social benefits. The experiment proves that the fusible high-performance elastomer modified asphalt waterproof roll disclosed by the invention has the advantage that the construction rate can be improved by 10-20 percent.

The invention discloses a pre-reinforcement method and a pre-reinforcement structure for a full section of a tunnel. The method comprises the following steps: S1, arranging a plurality of conduits (1) in the surrounding rock of a to-be-excavated tunnel and along the contour line of a tunnel face (4), and grouting to the surrounding rock of the to-be-excavated tunnel through the conduits (1); S2, arranging a plurality of free-cutting anchor rods (2) in the to-be-excavated tunnel from the tunnel face (4); S3, excavating the tunnel face (4). The pre-reinforcement method and the pre-reinforcement structure disclosed by the invention are easy in field operation, reasonable in reinforcement cost, high in safety and good in reinforcement effect, and the problem that the working face of the tunnel collapses due to excessive extrusion deformation during a loess tunnel excavation and support process of full section excavation to influence the primary support stability is solved very well; as mechanized construction is not influenced by the free-cutting anchor rods during the construction process, so that the construction speed is quickened very well, the reasonable construction cost is kept, the construction safety, the construction quality, the construction period and the like are ensured, and the tunnel construction level is improved; the pre-reinforcement method and the pre-reinforcement structure have very good site construction value.

The invention discloses a rubber water stopping plug which is used for plugging a hole remained after an opposite-pull bolt is detached. A construction method comprises the following steps: after detaching an underground concrete outer wall template, eliminating a PVC (Polyvinyl Chloride) pipe with the depth which is not smaller than the length of the rubber water stopping plug by taking an outer wall as a starting point; carrying out mounting type plugging on the hole by utilizing the rubber water stopping plug; and coating an end close to the outer wall with a sealant, and densely plugging the end and a pipeline by adopting expanding type polymer cement waterproof mortar. The common quality problem that the opposite-pull bolt is not plugged tightly is solved and the risk of leaking water along the hole at a later period is eliminated.

The invention discloses a hanging basket for corrugated steel web plate construction and a construction process. The hanging basket for construction comprises an upper beam assembly, a lower beam assembly and multiple groups of hanging rods for connecting the upper beam assembly and the lower beam assembly. A base plate bottom formwork and base plate side formworks are arranged above the lower beam assembly, the upper beam assembly is supported on the top end faces of two corrugated steel web plates through two groups of supporting beams, and thrusting devices are arranged between the supporting beams and the top ends of the corrugated steel web plates. The bottom ends of the corrugated steel web plates are arranged in a base plate concrete casting area. Top plate bottom formworks arranged above the upper beam assembly. Horizontally-arranged sliding beams are arranged on two sides of the corrugated steel web plates, and conveying devices for conveying the base plate bottom formwork, the base plate side formworks and the top plate bottom formworks to the positions to be cast are installed on the sliding beams. The self weight of the hanging basket for corrugated steel web plate construction can be effectively reduced, the security coefficient of the hanging basket can be improved, and the construction efficiency can be accelerated.

The invention discloses a demolition construction method for an overpass existing line arch bridge. The demolition construction method comprises the steps: 1, erecting a protective shed frame; 2, carrying out static crushing demolition on the arch blasting demolition structure; 3, manually removing the blasting protection layer; 4, cutting the removed arch ring; 5, hoisting the arch ring to be hoisted; and 6, dismantling the under-arch structure. The method is simple, reasonable in design, easy and convenient to construct and good in using effect; the protection shed frames fixed to the frontside and the rear side of the removed arch bridge are adopted for effective protection, meanwhile, the structure on the arch of the removed arch bridge is removed in the mode that static crushing andmanual chiseling are combined, it is guaranteed that a plain concrete arch ring cannot be damaged in the static crushing process, and an existing spanned railway line cannot be disturbed. After the arch ring is exposed, the removed arch ring is cut and decomposed through a rope saw and then hoisted and removed, then the under-arch structures on the left side and the right side are rapidly removed,the construction period can be effectively shortened, the arch bridge removing efficiency is improved, and the removing process is safe and reliable.

The invention discloses a construction method of a concrete trestle and foundation pit connection joint structure. The construction method comprises the steps that firstly, a center area of a foundation pit is determined, and a trestle construction area is selected; secondly, a first supporting structure is constructed in the foundation pit; thirdly, a second supporting structure is constructed in the center area of the foundation pit, and then a horizontal platform is arranged above the second supporting structure; fourthly, a steel bar structure of a first slope ramp is constructed in the position, between the horizontal platform and the edge of the foundation pit, above the first supporting structure, then concrete is poured onto the steel bar structure to form the first slope ramp formed by the reinforced concrete, and antiskid strips are fixed on the upper surface of the first slope ramp; fifthly, a buffer platform parallel to the ground is arranged in the position, above the foundation pit, on the ground and connected with the first slope ramp; and sixthly, a second slope ramp is constructed between the buffer platform and the ground. The concrete trestle and foundation pit connection joint structure is firm in device and safe in driving, and the earthwork transportation efficiency is improved by 12%.

The invention provides a vertical shaft traction cable clamp with guiding and avoiding functions. The vertical shaft traction cable clamp comprises at least one group of clamp single-pieces, wherein each clamp single-piece comprises a hollow housing and a clamp body; the clamp body comprises a cable clamp and a steel wire rope clamp; a housing comprises a circular table body and a cylindrical barrel; each cable clamp comprises a U-shaped bolt, an arc-shaped board and angle steel; and each steel wire rope clamp comprises a single line clamp which is in one-to-one correspondence to the U-shaped bolt. According to the technical scheme applied by the invention, the vertical shaft traction cable clamp has the beneficial effects that: firstly, the integral structure is simplified, and space usage is small; secondly, the housing achieves the dual effects of protecting and guiding, i.e., the housing achieves the protecting effect for the clamp bodies arranged inside the vertical shaft traction cable clamp; and by virtue of the design of the circular table body, the housing can effectively avoid horizontal barriers along the conical surface of the housing, so that quick hoisting of cables is realized; and thirdly, by virtue of the structures of the cable clamps as well as a combined design of the cable clamps and the steel wire rope clamps, damages to the cables in a hoisting process can be reduced to the greatest extent, and the safety and hoisting speed in the hoisting process can be improved.

The invention provides a small cable trench. The cable trench comprises a cable trench cushion layer positioned below the ground plane, a prefabricated U-shaped cable trench is formed by a prefabricated U-shaped cable trench structural part, cable trench reinforcing steel bars are buried in the cable trench structural part, the tail ends of the cable trench reinforcing steel bars penetrate out ofthe top face of the U-shaped cable trench structural part and are buried in ground concrete 4, the ground concrete and the prefabricated U-shaped cable trench jointly form a trench inner wall, and angle steel is arranged on the edge of the trench. The invention further provides a construction method of the small cable trench. When the prefabricated U-shaped cable trench is prefabricated, trench wall steel bars are reserved; excavating and pouring a concrete cushion layer, installing and adjusting the prefabricated U-shaped cable trench, and arranging an expansion water stop strip at a horizontal construction joint before pouring the ground concrete; the angle steel is fixed on the ground reinforcing steel bars; and finally, the ground concrete is poured and formed. The scheme has the advantages that the efficiency is high; differential settlement of the ground and the cable trench is eliminated; the field use is reduced, and the forming appearance quality of the component can be guaranteed through factory prefabrication.

The invention discloses a positive circulation direct-entry buried pipe construction technology, which can lower the heat exchange pipe together with the drill pipe into the drill hole when drilling. This construction process can lower the heat exchange tubes while drilling, integrate multiple processes together, reduce the process of sweeping holes, emptying and placing heat exchange tubes, and drill pipes for secondary lowering, which greatly improves the construction rate , the construction time can be shortened by about half; at the same time, the construction process can make the heat exchange tube close to the hole wall, avoiding the heat exchange tube being close or twisted together in the conventional buried pipe method, and improving the continuity and compactness of the filler , Compared with the conventional construction method, the heat exchange efficiency of the heat exchange system is greatly improved.

The invention discloses a prefabricated bridge deck wet joint connecting structure, a prefabricated bridge and a method thereof. The technical proposal is as follows: prefabricating concrete bridge deck, a plurality of conical tooth grooves are formed in one side of the prefabricated concrete bridge deck and there is an annular connecting joint steel bar extending out from the end face of the prefabricated concrete bridge deck; the annular connecting joint steel bars between the two prefabricated concrete bridge decks are overlapped and staggered; transverse penetrating steel bars are arrangedon the inner sides and the outer sides of the annular connecting joint steel bars; concrete is filled between the oppositely-arranged conical tooth grooves to form a wet joint. The conical tooth grooves are formed in the connecting interface of the prefabricated concrete bridge deck slabs, the bridge deck slabs are connected through the annular steel bars. The invention has the advantages of simple structure, reasonable stress, reliable force transmission, capable of meeting various requirements of the concrete bridge deck slabs in the normal use and bearing capacity limit state; The on-sitepouring amount is small, and construction is convenient and fast.

In order to solve the problems of damage to a waterproof layer, low construction efficiency, low construction quality and the like in the construction process of the prior method, the invention provides a connecting structure of roof battens and counter battens. The connecting structure comprises a plurality of counter battens longitudinally and evenly arranged on a roof plate needing roof repairing work and a plurality of roof battens transversely and evenly arranged on the counter battens and used for hanging tiles. The two ends of the counter battens are hung at the two ends of roof platesrespectively. According to the connecting structure of the roof battens and the counter battens, the defect of waterproof layer leakage caused by traditional nailing can be overcome, the connecting positions and the connecting number of the roof battens and the counter battens can be adjusted according to the actual sizes of roof tiles, and therefore the usable range is wide; and in addition, theconstruction process of the structure is simple, and the construction speed can be greatly improved, so that the superiority in simplifying the process and improving the efficiency is stronger.

The invention relates to an assembled beam column structure and a construction method thereof and relate to the technical field of building structure design and construction, against the problem thatexisting prefabricated components of an prefabricated building and cast-in-place part connection nodes are disposed at the intersecting nodes of beam columns, so that the structural stress performanceis poor, resulting in unreasonable force. The assembled beam column structure includes a prefabricated section, a cast-in-place section and a plurality of structure columns, wherein the prefabricatedsection is at least one prefabricated primary beam and at least one support which are prefabricated to be a whole, or at least one prefabricated primary beam and at least one prefabricated secondarybeam which are prefabricated to be a whole; the cast-in-place section is connected between two adjacent prefabricated primary beams and / or prefabricated secondary beams, the cast-in-place section is formed by on-site concrete pouring, and the connecting node of the prefabricated section and the cast-in-place section has a distance of L / 4 to L / 3 from the center of the adjacent support or prefabricated primary beam; the structure columns are connected to the bottom of the support; and L is the calculated span of the beam.

The invention discloses a fabricated shear wall with a steel plate stud combined type diagonal bracing and a construction method. The fabricated shear wall comprises a first shear wall unit and a second shear wall unit, wherein the first shear wall unit and the second shear wall unit are stacked up and down, and the first shear wall unit and the second shear wall unit are connected and fixed witha connecting mechanism; the first shear wall unit and the second shear wall unit are provided with shear wall structures; a shear wall frame is formed by enclosing a left concealed column, an upper concealed beam, a right concealed column and a lower concealed frame; a first facade steel plate and a second facade steel plate are fixed to the front side and the rear side of the shear wall frame; diagonal bracing members are fixed in the shear wall frame; and each diagonal bracing member comprises two steel plates, the two steel plates cross each other to form an X-shape structure, studs are arranged on the steel plates, and concrete is poured in the shear wall units. According to the fabricated shear wall with the steel plate stud combined type diagonal bracing and the construction method,the in-plane lateral stiffness, shear bearing capacity, bending bearing capacity, ductility and energy consumption of the shear wall are improved through the design of the diagonal bracing members, the shear wall units can be pre-installed in advance, and on-site construction is facilitated.

The invention provides a single-unit hydraulic dredger. The dredger comprises a hull, a control device, a driving mechanism and a water spraying device, wherein part of the control device is arrangedon the hull and used for computing preset angle and preset pressure intensity when high-pressure water spraying is conducted by the water spraying device and controlling the driving device to drive the water spraying device to move to a preset position to perform high-pressure impacting on sludge, the driving device is arranged on the hull and used for driving the water spraying device to synchronously move to a preset position according to a preset trajectory to ensure the water spraying device can perform high-pressure impacting on the sludge according to a preset angle, and part of the water spraying device is arranged on the hull and used for performing high-pressure water spraying according to the preset pressure intensity to flush away the sludge at the bottom of a port. The dredgerhas the advantages that the problems of lower cleaning efficiency and poorer cleaning effect when port sludge is cleaned by an existing dredger are solved.

The invention discloses a steel box beam thin-walled pier rigid frame cable-stayed bridge suitable for a straddle monorail. The bridge comprises a cap foundation (1), the cap foundation (1) is arranged longitudinally at interval in the bridge direction, the upper portion of the top is correspondingly provided with a pier, the pier comprises a side pier and a middle pier, the top of the pier is longitudinally provided with a steel main beam (3), pylons (4) are arranged corresponding to the top of the middle pier at the transverse sides above the steel main beam (3), the pylons (4) are providedwith cable fixing ends for fixing one end of a stay cable (6), and the other end of the stay cable (6) is sequentially fixed to the steel main beam (3) on both sides of the longitudinal direction of the pylons (4); the middle pier is at least two thin-walled piers (2) arranged at interval in the bridge direction, a pier beam consolidation system is adopted between the top of the middle pier and the steel main beam (3) to form a rigid frame structure with integral force, and the system releases the longitudinal temperature force of the steel main beam while satisfying the requirement of the straddle monorail to the rigidity of the bridge.

The invention provides a curtain wall removal device and method, and relates to the technical field of building construction. The problems that an existing curtain wall removal process has the defectssuch as high noise pollution, much construction dust, and high destructiveness to the surrounding environment are focused. The curtain wall removal device comprises a plurality of brackets, a track,and at least one winding engine and one hanging basket. The brackets are arranged at intervals, and one ends of the brackets are vertically connected to structural beams or structural columns in the area of curtain wall unit assemblies of an existing building. The horizontally arranged track is movably connected to the bottoms of the other ends of the brackets, and the extension direction of the track is parallel to the external wall of the existing building. The winding engines are connected to the track and can slide horizontally along the track. The hanging baskets are installed on liftinghooks on the bottoms of the winding engines correspondingly, and the hanging baskets are used for bearing the removed curtain wall unit assemblies and transporting the removed curtain wall unit assemblies to the ground.

The invention relates to a cast-in-place gypsum hollow wall with a non-dismantling formwork and a construction method of the cast-in-place gypsum hollow wall with the non-dismantling formwork, the cast-in-place gypsum hollow wall with the non-dismantling formwork comprises the non-dismantling formwork, a cast-in-place gypsum hollow wall and a plastering layer, and the non-dismantling formwork is composed of a steel structure framework and a face plate which are assembled on site. The steel structure framework is composed of a vertical end plate, a transverse bottom plate, transverse reinforcing ribs and a hollow pipe positioning plate. The face plates are high-strength calcium silicate plates, bolt holes are formed in the high-strength calcium silicate plates in advance, the high-strength calcium silicate plates are arranged on the long face and the high face of the steel structure framework, the inner sides of the high-strength calcium silicate plates are coated with waterproof paint, and the cast-in-place gypsum hollow wall is located in the non-dismantling formwork. A hollow pipe is arranged in the cast-in-place gypsum hollow wall body, the plastering layer is located on the outer side of the face plate, glass fiber gridding cloth is arranged in the plastering layer, the steel structure framework and the face plate are prefabricated in a factory, the non-dismantling formwork is obtained through field assembly, transportation is convenient, and meanwhile the flatness of the wall body and the construction efficiency are improved.

The invention discloses a rapid construction method for a level crossing rail, relates to the technical field of rail construction methods, and mainly adopts a prefabricated rail integration unit anda crossing plate to form most of rail structures in advance. In the construction site, implementation personnel only need to correspondingly construct the roadbed supporting layer, the mortar adjusting layer and the pavement paving layer, the cast-in-place amount of the whole construction site is reduced, and therefore the construction speed of a project is increased.

The invention discloses a fabricated underground structure and a construction method. The problems that in the prior art, underground structure construction occupies a large space, and a large number of supporting structures are reserved are solved, and the beneficial effects that construction is convenient, the number of supporting structures is reduced, and environmental pollution is reduced are achieved. The fabricated underground structure comprises a plurality of sections, every two adjacent sections are connected, each section comprises side walls on the two sides, a bottom plate and a top plate, the bottom plates are arranged at the bottoms of the side walls, the top plates are arranged at the tops of the side walls, and each side wall comprises a plurality of prefabricated parts; and outward steps are formed on the side walls on the two sides of one end of each section, so that the other end, opposite to the steps, of the front section can be wrapped by the rear section, and every two adjacent sections are connected in a pouring mode.

This invention relates to a self-compacting concrete that using polycarboxylate additive agent, mixed by aggregate, cementitious materials, additive agent and water. According to weight, sand rate of 45%, the total amount of slag and fly ash mixture is more than 30% of the total cementitious Materials, the water-cement ratio is not more than 0.4; select ordinary silicate cement of no less than 42.5; slag and fly ash ratio of 1:1; the Polycarboxylate, polyethylene oxide chain length of 10 ~ 300 Moore, the molar ratio of allyl part of 1 / 9 to 6 / 9, molecular weight of polymer is 30,000 to 80,000. It's Process: aggregate and cementitious materials by dry mixing 20 seconds later, add water and additive agent, wet mixing 00seconds then release concrete.

The present invention provides a double-unit hydraulic dredger, comprising: a hull, a control device, a driving mechanism, and a water spray device; Calculate the preset angle and preset pressure when the water device performs high-pressure water spraying, and control the driving device to drive the water spraying device to move to the preset position to perform high-pressure impact on the sludge; the driving device is set at the on the hull, used to drive the water spray device to move synchronously to the preset position according to the preset trajectory, so as to ensure that the water spray device performs high-pressure impact on the silt according to a preset angle; the water spray device A part is arranged on the hull, and is used for high-pressure water spraying according to a preset pressure to wash away the silt at the bottom of the port. The double-unit hydraulic dredger provided by the invention solves the problems that the existing dredger has low cleaning efficiency and poor cleaning effect when cleaning port silt.