37results about How to "Improve overturning stability" patented technology

The invention discloses a method for shoring a prestressed double-row-pile strong-constraint deep foundation pit and belongs to the technical field of civil engineering construction. The method comprises that two rows of reinforced concrete cast-in-place piles are arranged successively on the periphery of the foundation pit to be excavated, one row of reinforced concrete cast-in-place piles, which are close to the foundation pit, serve as front row piles, and the other row of reinforced concrete cast-in-place piles, which are close to existing buildings, serve as rear row piles; front row piles are formed through concrete pouring of reinforcing cages, and rear row piles are formed through concrete pouring after binding and planting prestressed anchor cables and reinforcing cages into pile holes; one ends of prestressed anchor cables, which are close to the ground, are anchor cable free sections, and anticorrosion is conducted on outer surfaces through grease, thin films and bellows, so that prestressed anchor cables can extend and retract freely; and prestressed anchor cables and reinforcing cages are bound and placed into pile holes through anchor cable anchoring sections at the other ends before grouting, front row pile top beams, rear row pile top beams and coupling beams are poured, and anchor cable anchoring pads which exert the prestressing force on prestressed anchor cables are arranged on rear row pile top beams. By the aid of the method, the horizontal stiffness and the pit overturning stability of a shoring structure can be improved, and security coefficients of peripheral buildings can be improved.

The invention discloses an anti-overturning reinforcing and supporting device of a single-column pier girder bridge. According to the anti-overturning reinforcing and supporting device of the single-column pier girder bridge, one side of a pier (2) is provided with a pier bearing steel plate (4) in the transverse direction of the bridge, the bottom of a girder (1) on the same side is provided with a girder arc bearing steel plate (9), an H-shaped steel supporting structure (7) is hinged to the pier bearing steel plate (4) through a hinge steel plate (5), hinge balls (8) are hinged to the H-shaped steel supporting structure (7) and embedded into the girder arc bearing steel plate (9), the hinge balls (8) and the girder arc bearing steel plate (9) are in sliding / rolling contact, and thus a steel structure supporting system for connecting one side of the pier (2) in the transverse direction of the bridge with a bottom plate of the girder (1) on the same side is formed; the same reinforcing and supporting structure is established on the other side symmetrical to the pier (2), finally a single-point supporting system of the single-column pier girder bridge is reinforced and supplemented, a three-fulcrum multi-point supporting system including an original supporting seat is formed, and the purpose of anti-overturning reinforcing of the single-column pier girder bridge is achieved.

Provided are an H-shaped double column pier wide-bridge-surface cantilever temporary consolidation structure and a construction method thereof. The H-shaped double column pier wide-bridge-surface cantilever temporary consolidation structure comprises a concrete bearing platform, a box-shaped continuous beam located above the concrete bearing platform and a plurality of supporting columns connected with the concrete bearing platform and the box-shaped continuous beam. The supporting columns are symmetrically arranged on the front side and the rear side of the a pier column in two rows, four corbels poured into a whole with the concrete bearing platform are respectively symmetrically arranged at four corners of the concrete bearing platform along the left side and the right side of the transverse direction of a bridge, four inclined supporting columns symmetrically distributed along the longitudinal direction of the bridge are connected between the corbels and the box-shaped continuous beam, the supporting columns and the inclined supporting columns are steel pipe columns, a cast-in-place supporting beam is arranged on a base plate of the box-shaped continuous beam, and the supporting beam is in opposite-pull connection through prestress precision rolling threaded steel bars evenly distributed in the steel pipe columns. According to the H-shaped double column pier wide-bridge-surface cantilever temporary consolidation structure, the technical problems that temporary supporting points of a traditional temporary consolidation structure cannot be arranged, the fabricating cost is high, construction efficiency is low, and adverse effect is caused to the environment due to high energy consumption are solved.

The invention provides a composite support bridge plane rotating system. The composite support bridge plane rotating system comprises a lower bearing platform structure, a center spherical hinge, a rotary table for supporting a to-be-rotated bridge, and a power mechanism for driving the rotary table to rotate, a supporting platform for supporting the center spherical hinge is arranged on the lowerbearing platform structure, the center spherical hinge is rotatably installed at the bottom of the rotary table, and arranged corresponding to the central area at the bottom of a pier of the to-be-rotated bridge, a ring-shaped track is arranged on the position, on the outer side of the supporting platform, of the lower bearing platform structure, and a plurality of idler wheel trolleys for supporting the rotary table are arranged on the ring-shaped track in a travelling mode. According to the composite support bridge plane rotating system, the center spherical hinge and the idler wheel trolleys are used for being subjected to force bearing jointly, multi-point support is formed on the to-be-rotated bridge, the problem that the loads of existing single-spherical-hinge rotating bodies are all centralized near the center spherical hinge to be transferred, and consequently the lower bearing platform structure is unevenly stressed is solved, and the anti-overturning stability in the rotating process is greatly improved.

The invention belongs to the technical field of foundation structures of marine engineering, and discloses a combined marine six-pontoon floating box foundation structure and a construction method thereof. The combined marine six-pontoon floating box foundation structure comprises six pontoons, wherein the six pontoons are arranged in the way that the six pontoons are connected in sequence in thehorizontal plane according to the center points of the six pontoons to define a regular hexagon. A floating box is connected between the every two adjacent pontoons. Each floating box penetrates through the axes of the corresponding pontoons at the two ends of each floating box along the center line of the length direction. The pontoons and the upper parts of the floating boxes are connected witha transition section tower frame. The transition section tower frame is used for being connected with upper wind power equipment. The construction method of the combined marine six-pontoon floating box foundation structure comprises the steps of structure prefabricating, initial adjustment preparation, water consignment, foundation water entry, negative pressure penetration, grouting ballasting, supper structure mounting and recycling and utilizing. The combined marine six-pontoon floating box foundation structure has the characteristics of having a gravity foundation and a suction-barrel-typefoundation, the bearing capacity is improved while the transporting and mounting method is simple and convenient, recycling and reusing can be achieved, and the construction cost is greatly reduced.

The invention discloses an anti-overturning device used for a railway vehicle, an operation method thereof and a railway vehicle bogie. The device comprises a displacement sensor, a control device and an anti-overturning hook plate, wherein the displacement sensor is used for detecting the stress state of an axle box spring of the railway vehicle, and the control device and the anti-overturning hook plate are connected with the displacement sensor. A hook part capable of hooking the lower surface of a railhead of a railway is arranged at the first end of the anti-overturning hook plate, the second end of the anti-overturning hook plate is installed on the bogie of the railway vehicle in a rotatable mode, and the control device is used for pushing the hook part of the anti-overturning hook plate to hook the lower surface of the railhead of the railway or leave the railway according to information collected by the displacement sensor. The operation method includes the step that the control device controls the anti-overturning hook plate to act. Two anti-overturning devices are installed below the two sides of the bogie respectively, and displacement sensors are installed between a wheel pair of the railway vehicle and a frame of the bogie. Vertical separation between the wheel pair and the railway can be effectively prevented, and the anti-overturning stability of a train can be substantially improved.

The invention discloses a railway side dump car, which is characterized in that the upper cross section of each side door of the side dump car is small, the lower cross section of each side door of the side dump car is large, and the upper cross section is determined by calculation according to the minimum impact load of goods on the side doors. The camber angle of each side door is increased by 8-10 degrees. The height of each side door is increased, and the maximum relative distance between the tops of the two side doors is within the outer width of the lower part of a carriage. According to the railway side dump car disclosed by the invention, through the improvement on the structure of the carriage, the limit is fully utilized, and the lateral dimension of the carriage is increased; and on the premise of meeting the antidumping safety requirement of dumping operation, the internal height of the carriage is increased. The capacity of the carriage is increased through the combination of the modes, the full load need in transporting main trend granular goods is met, and the economic benefit of transportation is improved.

The invention belongs to the technical field of foundation structures of oceanographic engineering, and discloses an offshore six buoy and six buoyancy tank combined type foundation structure and a construction method thereof. The foundation structure comprises six buoys arranged in a mode that the center points of the buoys are connected in sequence to define a regular hexagon shape on a horizontal plane, a buoyancy tank is connected between every two adjacent buoys, and the center line in the length direction of each buoyancy tank penetrates through the axes of the buoys on the two ends of the buoyancy tank; and a transition section tower is connected to the upper portions of the buoys and the upper portions of the buoyancy tanks, and the transition section tower is used for being connected with upper wind power equipment; and the construction method comprises the steps of structure prefabrication, primary adjustment preparation, overwater towage, water entrance of a foundation, negative pressure penetration, grouting and ballasting, upper structure installation and recycling. The foundation structure has the characteristics of a gravity type foundation and a suction barrel typefoundation, the bearing capacity is improved, and meanwhile, the transportation and installation modes are simple and convenient, the foundation structure can be recycled, and the construction cost isgreatly reduced.

The invention relates to the technical field of bridge construction, in particular to an open-cut rock anchoring combined foundation and an inverse work construction method thereof. A convex rock exposed out of a river bottom is removed, and a foundation pit is dug; the foundation pit is bound with a steel bar net, a positioning sleeve is pre-buried in the steel bar net, and an open-cut cushion cap is cast on the bound steel bar net; on the open-cut cushion cap, holes are drilled to a bedrock at the bottom of the open-cut cushion cap through the positioning sleeve, and construction of anchoring holes is completed; anchor rods are inserted into all the anchoring holes along the positioning sleeve, anchor rod mortar is injected in the anchoring hole, and anchoring of the anchor rods is achieved; pier stud stressed main bars are welded to the anchoring rods of the corresponding positions of the open-cut cushion cap, a stud body steel bar cage is bounded, and pier body concrete construction is conducted; after the pier body construction is completed, the foundation pit is refilled with concrete till the ground line is reached, and construction is completed. The positioning sleeve is arranged in the open-cut cushion cap, after positioning is conducted through the positioning sleeve, the anchoring holes are drilled, the inverse work construction method of the open-cut rock anchoring combined foundation is easier compared with a method in which drilling and pilling are directly conducted on the bedrock, and the phenomenon like hole broadening is not prone to occurring.

The invention relates to the field of transmission line tower foundations, and provides a mountainous area small-load sleeve type foundation structure in order to overcome the defects of an existing transmission line tower foundation on the aspects of mountainous area transportation and economy. The mountainous area small-load sleeve type foundation structure comprises a sleeve pillar body pre-embedded under the ground and a lower expanded base forming an integrated structure with the sleeve pillar body. The lower expanded base is located at the lower end of the sleeve pillar body, the orthographic projection surface of the whole lower expanded base is of a round structure, and the diameter of the upper end of the lower expanded base is smaller than that of the lower end of the lower expanded base. The sleeve pillar body is internally provided with a hole groove where a power pole can be inserted. The design of an inclined anchor rod can improve the anti-overturning stability of the power pole foundation, and the base is designed in the form that the diameter of the upper end of the base is smaller than that of the lower end of the base, so that the base improves the anti-overturning stability of the power pole foundation and effectively improves anti-pulling capacity, and the base is suitable for the mountainous area small-load sleeve type foundation structure.

The invention relates to an inclined post pile foundation for an overhead transmission line. The inclined post pile foundation comprises inserted angle steel, anchoring angle steel, a concrete pile and a foundation step pile, wherein the inserted angle steel and the anchoring angle steel are fixedly arranged on the upper part and the lower part of the concrete pile respectively; an included angle of 10-20 degree is formed between the concrete pile and a vertical direction; and the foundation step pile is arranged at the bottom of the concrete pile, and is connected with the concrete pile by pouring. Compared with the prior art, the obliqueness is consistent with the gradient of an overhead transmission line bracket, so that the stress states of a foundation upright post and a bottom plate are improved greatly, the influence of foundation horizontal force on a foundation bottom plate is reduced to the maximum extent, and the stability of the foundation is enhanced remarkably; and meanwhile, the eccentric bending moment is reduced, so that the size of the controlled foundation bottom plate can be reduced correspondingly, the concrete amount and reinforcement amount of the foundation are reduced, the foundation is stressed reasonably, the anti-dumping stability is enhanced greatly, and the using amount of a foundation material can be saved by about 20 percent.

The invention belongs to the field of steel structure construction, and particularly relates to a bottom section adding hydraulic jacking system and a construction method. The bottom jointing hydraulic jacking system is composed of a jacking reaction frame, an anti-overturning stabilizing frame, a jacking frame standard section, and a top platform. As the jacking elevation increases during jacking, the anti-overturning stability of the entire jacking system decreases. By arranging the anti-overturning stabilizing frame, the jacking system always maintains translational freedom degree releasingin the vertical direction and translational and rotational freedom degree constraints in other directions during jacking, anti-overturning stability of the entire jacking system is improved, a jacking transverse beam is connected with the standard section of the jacking frame through pin connection, and the jacking construction efficiency is improved.

The invention relates to a combined type large-capacity typhoon-resistant silo and a manufacturing method thereof.The silo is mainly used for storing fine particles or powdery substances such as bulk cement, coal ash and mine powder and providing the materials for a blending machine.The silo comprises a concrete foundation, a base and a silo body; the base is arranged on the concrete foundation and is a rack composed of single rod pieces; the silo body is fixed to the base and comprises a silo bottom, a cylinder body and a silo top, and the cylinder body is formed by splicing arc-shaped steel plates; auxiliary facilities are further mounted on the silo body.By means of the combined type large-capacity typhoon-resistant silo and the manufacturing method thereof, integral windproof arrangement of the silo can be enhanced, the silo can be mounted and transported conveniently, the capacity of the silo can be increased, and components can be maintained and replaced conveniently.

The invention belongs to the technical field of foundation structures of marine engineering and discloses a combined offshore four-buoy four-buoyancy-tank foundation structure and a construction method thereof. The foundation structure comprises four buoys which are arranged by sequentially being connected into a square on the horizontal plane according to the center points; a buoyancy tank is connected between every two adjacent buoys, and each buoyancy tank penetrates through the axes of the buoys at the two ends of the buoyancy tank along the center lines in the length direction; and a transitional section tower is connected to the upper portions of the buoys and the buoyancy tanks and used for being connected with upper wind power equipment. The construction method of the combined offshore four-buoy four-buoyancy-tank foundation structure comprises the steps of structure prefabricating, initial setting preparation, water consignment, entry-to-water of the foundation, negative pressure penetration, grouting ballasting, installation of an upper structure, and recycling. The combined offshore four-buoy four-buoyancy-tank foundation structure integrates the characteristics of a gravity type foundation and a suction barrel type foundation, the transportation and installation modes are simple while the bearing capacity is improved, recycling and reuse are achieved, and the construction cost is greatly reduced.

The invention provides a uniparted hyperboloid anniversary flower basket frame. By using the diagonal grain characteristic of a uniparted hyperboloid, a space-crossing diagonal bar mesh cylinder is built, crossing joints of spatial bar members are fixed, and multiple reinforcing ring beams are arranged, so that the uniparted hyperboloid anniversary flower basket frame is formed. Multiple partition plates are arranged to divide the inner space of the uniparted hyperboloid anniversary flower basket frame, and an elliptic concrete weight partition plate is arranged on the bottom of the uniparted hyperboloid anniversary flower basket frame so as to increase the anti-overturning stability; a wooden partition plate is arranged on the upper portion of the flower basket frame and used for placing an upper-layer flower pot; lower-layer flowers are arranged around a cylinder body of the flower basket frame, a plastic partition plate is arranged in the middle of the flower basket frame and used for placing a goldfish bowl, and the spatial region between the middle goldfish bowl partition plate and the bottom concrete partition plate can be also used as a birdcage, so that birds' twitter and fragrance of flowers are achieved, and the flower basket frame is rich and colorful. The novel anniversary flower basket frame has the advantages of being stable and firm in structure, attractive in thin-waist shape, diversified in function, convenient to manufacture, low in price and the like.

The invention discloses a foundation pit supporting method for a ground tube pile anchor frame. According to the method, concrete tube piles and pre-stressed anchor cables are used as the foundation. The method mainly refers to a foundation pit supporting method in which the adjacent building foundation embedded depth is high, the distance away from a foundation pit is short, the foundation pit side wall deformation requirement is high, and conventional anchor cable and steel shotcrete supporting cannot be achieved. By the adoption of the method, two rows of concrete tube piles are arranged around the foundation pit to be excavated, and the pre-stressed anchor cables which forms an angle alpha downwards are arranged between the front row piles and the rear row piles of the top of the foundation pit. Collision of the anchor cables with adjacent existing buildings (structures) is avoided under the condition of guaranteeing rigidity of the tube pile structure. The concrete tube piles are used for replacing reinforced concrete piles, and thus cost can be effectively reduced. The method is used for foundation pit supporting, foundation pit side wall deformation can be reduced, and the stability against overturning of the foundation pit can be enhanced. The security coefficient of the buildings (structures) around in the foundation pit construction process is increased, and meanwhile the purposes of shortening the construction period and reducing the cost are achieved.

The invention belongs to the technical field of foundation structures of oceanographic engineering, and discloses an oceanographic five-buoy-buoyancy-tank combined type foundation structure and a construction method thereof. The foundation structure comprises five buoys which are sequentially connected to form a regular pentagon on the horizontal plane according to the center point of the five buoys; a buoyancy tank is connected between every two buoys; the center line in the length direction of each buoyancy tank penetrates through the axes of the buoys at the two ends of the corresponding buoyancy tank; and a transition section tower is connected to the upper parts of the buoyancy tank and the buoys and is used for being connected to upper wind power equipment. The construction method comprises the steps of prefabricating the structure, carrying out primary adjustment preparation, carrying out overwater towing, sinking the foundation structure into water, carrying out suction penetration, carrying out grouting and ballasting, installing the upper structure and carrying out recycling. The oceanographic five-buoy-buoyancy-tank combined type foundation structure has the characteristics of a gravity type foundation and a suction bucket type foundation, and therefore the bearing capacity can be improved, and meanwhile, the transportation and installation modes are simple and convenient, recycling and reusing can be realized, and the construction cost can be greatly lowered.

A dual-drive heavy type transport cart comprises a driving cart and a driven cart. The driving cart and the driven cart each comprise a foot-operated electronic accelerator, an ECU rotary speed controller, an engine rotary speed controller, an engine, a clutch oil cylinder arranged on the engine, a servo accelerator executor, a clutch potentiometer, a clutch hydraulic pot, a clutch electric pump,a rotary speed communication interface and a clutch potential signal interface. The defects in the prior art are overcome, and the transport cart is reliable in working performance, is provided with complete safety facilities, is reasonable in whole structure, stable in operation, comfortable to operate, low in manufacturing cost, attractive in appearance, good in anti-overturning stability and high in production efficiency; the transport cart has the large load capacity and is of a self-propelled type, transportation is not limited by distance, operation is easy and convenient, and an operation driver can be qualified only through simple training.

The invention belongs to the field of offshore special operation equipment, and relates to an offshore working ship with a variable balance wing, which comprises a ship body, a propulsion device, auxiliary equipment thereof and electric equipment, wherein the side part of the ship body corresponding to a working platform is designed into a concave structure, the side part of the ship body with theconcave structure is hinged with the balance wing, and the ship body is provided with a power control device for controlling the running state of the balance wing. According to the invention, a structure form of the variable balance wing is adopted on the basis of a structure of a single ship, the normal navigation of the working ship is not influenced, the balance wing can be unfolded to advancethe buoyancy during the working, the working capability and the lateral stress resistance of the ship body are effectively increased, the whole balance capability is improved and the anti-overturningstability is improved, the offshore special working capability is improved under the condition of the same hull tonnage, and the ship can be better adapted to the requirements of special working by arranging corresponding facilities on the balance wing.

The invention discloses a large-span space cable net system suspension bridge, and belongs to the field of civil engineering. The large-span space cable net system suspension bridge mainly comprises arch-shaped bridge towers, main cables, suspension rods, parallel cables, space cable nets, back cables, arch-shaped ring beams, stiffening steel beams, anchorages, bearing platforms, pile foundationsand other structures. A Bessel curve is applied to optimize a traditional portal bridge tower, so that the line shape of the portal bridge tower is smoother, and the anchoring requirement for arranging space cables can be met more easily; the space cable net is arranged in a hyperbolic paraboloid form, so that the space rigidity and the flutter critical wind speed of the cable system are effectively improved; and meanwhile, the excellent mechanical property of the uniparted hyperboloids is applied to improve the appearance of a traditional pile foundation pile body, and the anti-overturning performance is obviously improved under the condition that the anti-bending and anti-shearing bearing capacity of the pile foundation pile body is guaranteed. The large-span space cable net system suspension bridge provided by the invention can greatly improve the wind-resistant stability of the suspension bridge, and can be used as a reference for constructing the large-span space cable net systemsuspension bridge.

The invention discloses a method for shoring a prestressed double-row-pile strong-constraint deep foundation pit and belongs to the technical field of civil engineering construction. The method comprises that two rows of reinforced concrete cast-in-place piles are arranged successively on the periphery of the foundation pit to be excavated, one row of reinforced concrete cast-in-place piles, which are close to the foundation pit, serve as front row piles, and the other row of reinforced concrete cast-in-place piles, which are close to existing buildings, serve as rear row piles; front row piles are formed through concrete pouring of reinforcing cages, and rear row piles are formed through concrete pouring after binding and planting prestressed anchor cables and reinforcing cages into pile holes; one ends of prestressed anchor cables, which are close to the ground, are anchor cable free sections, and anticorrosion is conducted on outer surfaces through grease, thin films and bellows, so that prestressed anchor cables can extend and retract freely; and prestressed anchor cables and reinforcing cages are bound and placed into pile holes through anchor cable anchoring sections at the other ends before grouting, front row pile top beams, rear row pile top beams and coupling beams are poured, and anchor cable anchoring pads which exert the prestressing force on prestressed anchor cables are arranged on rear row pile top beams. By the aid of the method, the horizontal stiffness and the pit overturning stability of a shoring structure can be improved, and security coefficients of peripheral buildings can be improved.

The invention relates to the technical field of bridge reinforcement, in particular to an intelligent anti-roll device for a single-column bridge, which comprises a bridge column and a bridge body supported on the bridge column, and further comprises an anti-roll mechanism arranged on the bridge column and used for inhibiting the bridge body from inclining towards one side; the lubricating mechanism is used for carrying out lubricating and rust-proof treatment on a hinged part in the anti-roll mechanism, the lubricating mechanism is arranged on the bridge column, and the lubricating mechanism is in transmission connection with the anti-roll mechanism; the stirring mechanism is arranged on the bridge column, the stirring mechanism is used for stirring and mixing lubricating oil, and the stirring mechanism is connected with the lubricating mechanism through hydraulic transmission. According to the intelligent anti-roll device for the single-column bridge, the anti-roll mechanism is arranged on the bridge column, so that the anti-overturning stability of the single-column bridge is improved, and the problem that the safety of a bridge deck system of the existing single-column bridge is damaged due to rapid development of heavy traffic and serious overload of transport vehicles is solved.

The invention discloses a portal type double-row pile system of a rear row pile anchor and a construction method of the portal type double-row pile system. The portal type double-row pile system comprises a front row pile and a rear row pile; the anchor cables are constructed through a high-pressure jet grouting construction process and arranged between every two adjacent piles in the rear row pile; a soil body between the front row pile and the rear row pile is reinforced through high-pressure jet grouting piles; the front row pile and the rear row pile are constructed, and the pile tops are connected through a rigid frame beam; and excavation is conducted to the pit bottom, and a main body structure is constructed. According to the portal type double-row pile system of the rear row pile anchor and the construction method of the portal type double-row pile system, the anti-overturning stability of portal type double-row piles can be improved easily, and the engineering cost is reduced.