69results about How to "Reduce construction safety risks" patented technology

The utility model provides a coiled tubing bottom packer and a coiled tubing dragging fracturing process pipe column with a bottom seal, the coiled tubing bottom packer comprises a core shaft, an anti-jacking anchoring mechanism, a rubber sleeve and a seat clamping tile, the left end of the core shaft is connected with an upper joint, and a packing sealing assembly is installed at the right end of the core shaft; the anti-jacking anchor fluke mechanism comprises an anchor fluke base and an anchor fluke, the anchor fluke is installed in the anchor fluke base, an inner hole is formed in the left end of the anchor fluke base in the axial direction, and the packing sealing mechanism can be fixed in the inner hole; the rubber sleeve is installed on the anchor fluke base, the rubber sleeve has a certain elastic deformation performance and can expand and contract, a cone is arranged on the right side of the rubber sleeve, and a seating slip is arranged on the right side of the cone. The coiled tubing dragging fracturing process pipe column with the bottom seal comprises the coiled tubing bottom packer. According to the coiled tubing bottom packer, coiled tubing bottom seal dragging fracturing construction can be continuously carried out under a high pump stopping pressure block.

The invention discloses highway three-dimensional reconstruction and extension bridge installation equipment and a construction method thereof.The equipment comprises a main beam structure, the front end of the main beam structure is supported on a pier column of a bridge through a front supporting leg, and the rear portion of the main beam structure is supported on a bridge deck precast beam of the bridge through a rear supporting leg and a middle supporting leg; the rotating turntable is arranged on the bridge deck precast beam and is used for rotating the steel cover beam, the main beam structure comprises two main beams which are arranged side by side, and two movable crown blocks are arranged on each main beam. The steel cover beams and the precast beams are transported and installed on the bridge deck of the bridge girder erection machine, occupied ground lanes are reduced, long-time traffic closing is avoided, and operation interference on existing traffic is reduced; the construction difficulty of high-altitude rotation of a large-span steel cover beam is large, a bridge deck rotation-double-main-beam lifting mode is adopted, potential safety hazards of suspended rotation of the large-tonnage steel cover beam are avoided, the requirement for a lifting appliance is reduced, meanwhile, the single-hook lifting weight of a bridge girder erection machine is reduced, and the construction safety risk is reduced.

The invention relates to the technical field of engineering construction, in particular to a scroll type UHPC concrete composite board ground hardening technology and utensil which comprises a UHPC concrete composite board and a storage tool used for driving the UHPC concrete composite board to be laid and taken back. The UHPC concrete composite board comprises a first board, a standard board, a lengthened board, a shortened board and a tail board. Each UHPC concrete composite board is composed of a face board, a bottom board, hinge teeth and shear pins. The UHPC concrete composite boards are connected through hinges. Large-area long-distance ground hardening mechanical operation and recycling mechanical operation are achieved, and the construction efficiency is high; the reel type UHPC concrete composite board can be recycled for multiple times, and generation of construction waste and loss of steel are reduced.

The invention relates to the technical field of civil engineering foundation pit supporting, in particular to a hoisting method for a large steel structure in semi-cover excavation construction of a subway station. Comprising an open excavation area and a cover excavation area; the steel structure is conveyed into the foundation pit from the open excavation area through a crane and conveyed to the cover excavation area from the interval area between the middle pile bodies; the position of the walking vehicle is adjusted, and the height of the carrier roller frame is adjusted through the lifting mechanism to correspond to the position of the conveyed steel structure; after the steel structure penetrates through a steel rope ring connected with the first electric hoist, the steel structure is conveyed to the small trailer, and the left end of the steel structure is located on the left side of the small trailer; the small trailer carries the steel structure to walk leftwards for a certain distance and is lifted by the steel rope ring connected with the electric hoist, and the small trailer and the steel structure jointly convey the steel structure to the steel enclosing purlin and are manually connected; after the steel structure in the area is installed, the walking beam is started to move forwards along the hanger rail, and the chain drives the walking vehicle to move to the next construction position at the same time. The method is simple in process, convenient to operate, high in construction efficiency and small in resource waste.

The invention provides a method for excavating a multi-arch of a super-large flat tunnel: the excavation section of the tunnel is divided into six parts, including an upper left pilot tunnel, a lower left pilot tunnel, an upper right pilot tunnel, a lower right pilot tunnel, an upper rock wall, and a lower rock wall; the first support part is the initial support of the left arch and the spray layer on the left side of the upper rock wall; the second support part is the initial support of the left side wall; the third support part is the initial support of the right arch and the spray layer on the right side of the upper rock wall; the fourth support part is the initial support of the right side wall; the fifth support part is the initial support of the arch; the sixth support part is the initial support of the invert arch; and the seventh support part is the secondary lining. The upper rock wall and the lower rock wall are combined into a vertical support structure to achieve the effect of reducing the span of the tunnel; based on the active support concept and using the idea of ​​"using cables instead of support", prestressed anchor cables are applied at the arch crown, arch waist and arch foot of the tunnel for tensioning and locking, so as to control the deformation of the surrounding rock, reduce the construction safety risk brought by excavating the upper rock wall, and play the role of supporting and reducing the span.

The invention discloses an adjustable main buckling integrated type section steel tower cable wind connecting structure and a construction method thereof. The cable wind connecting structure comprises a tower side cable wind buckling and hanging connecting structure, a tower waist cable wind hanging connecting structure and a tower top cable wind connecting structure, and corresponding cable wind ropes, tensioning end universal joints and cable wind ground anchors matched with the cable wind connecting structure, the tower waist cable wind hanging connecting structure and the tower top cable wind connecting structure. The construction method comprises the following construction steps: step 1, calculating the stress of the section steel tower wind cable system; 2, a tower mooring rope anchoring device and a tensioning end are installed before the tower is installed; 3, a tower wind cable system is installed in the tower installation process; 4, the tower wind cable system is tensioned step by step; and 5, in the tower dismantling process, the wind cable system is released, pulled and dismantled step by step. The structure of the technology has the advantages of being simple in structure, safe, reliable, clear in stress, small in steel consumption and capable of adjusting the angle of the cable rope, meanwhile, the method is convenient to assemble and disassemble and high in construction efficiency, it can be guaranteed that the displacement of the section steel tower is within the allowable range when the section steel tower works, and the construction safety risk of tower cable hoisting and cable-stayed buckling operation is reduced.

The invention discloses a road roller autonomous operation path tracking control method, system and device and a storage medium. The method comprises the steps that the current position, posture, motion state and environment sensing data of a road roller are collected through a multi-sensor assembly; calculating a distance deviation and an angle deviation between the road roller and the preset path according to the preset operation path and the current position; based on the distance deviation and the angle deviation, a steering control instruction is generated through an algorithm combining feedforward control and PID feedback control; according to the residual operation path distance and the preset total operation time, generating a speed control instruction by adopting a trapezoidal speed planning algorithm; the steering control instruction and the speed control instruction are cooperatively adapted through a coordination control mechanism; the sensor data validity, the system operation state and the operation environment safety are monitored in real time, and safety protection measures are triggered when preset abnormal conditions are met. According to the invention, high-precision path tracking, forward and backward adaptive control, steering speed coordination and multi-layer safety guarantee can be realized.

The invention discloses tunnel construction excavation equipment and method. The detachable quick-connection cutter head is installed at the front end of the excavator, the hobbing cutter is arranged on the quick-connection cutter head, and the hobbing cutter on the cutter head is used for rotationally cutting and removing dangerous rocks, so that the occurrence of over-excavation and cavity collapse is reduced, the over-consumption of concrete is reduced, and the safety risk is reduced. The problems that after a tunnel is subjected to blasting excavation, an excavator is used for discharging dangerous surrounding rocks or weak and broken layered surrounding rocks are mechanically excavated through the excavator, so that overexcavation is too large, the stability of the surrounding rocks becomes poor, and sprayed concrete is wasted are solved.

The present application provides a kind of truss support equipment for supporting steel structure floor support plate and its application method, by being designed as including: a truss and two support power components, two support power components are respectively detachably mounted on two adjacent H-shaped steel beams;Each support power component includes: power device and support component hoisted on power device, power device is detachably mounted on a H-shaped steel beam;After support component hoisted to work surface under the drive of power device, support component is connected with truss installation, under the cooperation of support component and corresponding side H-shaped steel beam, truss is supported and fixed between two H-shaped steel beams, to support steel structure floor support plate.The whole support fixing process of steel structure floor support plate is automatically completed construction surface in position and support construction, the whole process does not need to occupy tower crane hoisting, support equipment installation process is simple, saves manpower and material resources, reduces construction safety risk.

The invention discloses a thin-vein medium-length hole mining transportation method based on mining, which comprises the following steps of: dividing a vein into a plurality of ore blocks along the vertical direction, excavating roadways along the vein at the tops and the bottoms of the corresponding ore blocks, and constructing roadways outside the vein at the lower sides of the ore blocks, so that the roadways outside the vein are lower than the corresponding roadways along the vein at the lower sides; and a plurality of ore removal through ways are constructed between the along-vein roadway and the outside-vein roadway, and flow guiding devices are installed in the ore removal through ways. The medium-length hole mining method is innovatively provided according to the metallogenic characteristics of the ultra-thin vein, the requirements of mechanical construction and transportation are met, the complex stoping process of an original mining method is improved, ore loss is reduced, and therefore the resource recovery rate is increased, mechanical construction is adopted for mining, transportation and the like, and the mining efficiency is improved. Ore loading can be directly carried out, ore conveying of the ore is facilitated, and therefore the safety risk of multi-person construction in an original mining method is reduced, and meanwhile the investment of the total production investment cost is reduced.

The invention discloses an integral dismantling method for a front guide beam in incremental launching construction through a cable-stayed buckling and hanging method. The lug plate is installed at the end of the end, connected with the guide beam, of the main beam, so that the main beam and the guide beam are in limiting fit which can only move relatively in the height direction, the other end of the guide beam is tensioned through the buckling cable of the buckling tower, and meanwhile the end, connected with the main beam, of the guide beam is jacked; under the condition that the jacking force of the jacking jack and the tensioning force of the buckle cable are applied to the two ends of the guide beam correspondingly, the guide beam is jacked upwards in the horizontal state till the elevation of the bottom of the guide beam is consistent with the elevation of the top of the main beam, the guide beam can be moved to the main beam under the action of the tensioning force of the buckle cable, and therefore the guide beam can be moved to the main beam. And then the guide beam is moved to the rear through sliding fit of the guide beam and the main beam, and overall dismantling of the whole guide beam is achieved. By means of the method, aerial work in the guide beam dismantling work can be effectively reduced so as to reduce the construction safety risk, and overall dismantling of the guide beam is achieved so as to improve the construction efficiency.

The present application relates to the technical field of tunnel engineering, in particular to a kind of soft weak surrounding rock shallow-buried unsymmetrical pressure tunnel portal section excavation method, comprising the following steps: S10, slope excavation tunnel excavation contour line above the natural slope of arch top and support;S20, vertical steel pipe pile is built outside tunnel excavation contour line on the side of mountain;S30, set range in tunnel arch portion is built reinforced concrete arch cap;S40, the slope toe of the reinforced concrete arch cap on the side of mountain that has been excavated and supported is backfilled;S50, build tunnel outside retaining wall;S60, the upper part of the reinforced concrete arch cap is backfilled and counter-pressured;S70, tunnel subsurface excavation and support are carried out.The present application can reduce the disturbance of lower construction to slope, avoid the construction risk of dangerous deep foundation pit engineering, improve construction reliability, speed up construction progress and protect ecological environment.

This invention discloses a BIM-based process simulation and consulting service support system and method, relating to the field of 3D modeling and visualization technology. The system includes a BIM holographic data acquisition module, a process logic intelligent deconstruction module, a dynamic process simulation engine module, a physical field real-time monitoring module, an expert knowledge decision-making module, and a visualization scheme generation module. By establishing a real-time matching mechanism between physical field data and simulation data, and setting multi-dimensional deviation warning thresholds for different construction stages, the system ensures the accuracy of various process conflict detections. Simultaneously, by linking the ambient lighting parameters collected by sensors with the BIM rendering engine in real time, it can dynamically correct the light and shadow distortion problem in the digital twin scene, avoid misjudgment of material textures caused by light and color temperature deviations, improve the accuracy of process conflict warnings, and reduce construction safety risks and resource scheduling errors.

The present invention belongs to the technical field of tunnel construction support, and specifically discloses a tunnel platform-free arch frame and an installation method thereof, comprising a plurality of groups of curved arch body parts and a plurality of groups of arch frame diagonal braces, each group of curved arch body parts comprising an upper step arch frame and a lower step arch frame, the upper step arch frame comprising a top arch frame N1 located at the middle top, middle arch frames N2 and N3 located at both sides of the top arch frame, and also comprising base arch frames N4 and N5 located at the bottoms of both sides of the middle arch frame, the lower step arch frame comprising supporting arch frames N6 and N7 located at the bottom of the base arch frame, two arch frame diagonal braces are symmetrically arranged on both sides of each group of arch body parts, and the arch frame diagonal braces are respectively arranged on both sides of the base arch frame. The present invention has the advantages of simple structure and fast construction.

The invention discloses a D-shaped beam overhead jacking method. A prefabricated overhead system is formed by a D-shaped beam, a cross beam, a steel rail, a guard rail, a bridge sleeper and other components to reinforce an existing railway. In the construction process, firstly, a construction platform is built offline, and components such as D-shaped beams, cross beams, steel rails, guard rails and bridge pillows are assembled into an overhead system on the platform. And then the work of dismantling old rails and laying temporary guide rails can be carried out, and meanwhile the overhead system can be horizontally moved. And after the overhead system is moved to a specified position, the whole overhead system is moved to an overhead section by using a special moving trolley and a temporary guide rail, so that the connection and installation work of the rail can be carried out. After connection and installation, excavation of a lower line and jacking of the box culvert can be carried out according to regulations, and after jacking construction is completed, follow-up work of dismounting of overhead equipment and repairing and recovering of the line can be carried out; the construction efficiency and benefits are greatly improved.

The invention discloses on-site cutting equipment based on house building construction, and relates to the technical field of cutting equipment.The on-site cutting equipment comprises a framework, a handheld part arranged on one side of the framework and a trephine arranged on the other side of the framework, rotating arms are rotationally arranged at the two ends of the framework correspondingly, and auxiliary wheels which are symmetrically and rotationally arranged are arranged at the ends of the rotating arms; the auxiliary wheel can rotate forwards and backwards; a connecting disc is fixedly connected to one side of the auxiliary wheel, and a plurality of sliding rods which are circularly distributed at equal intervals are arranged on one side of the connecting disc. By means of the cutting equipment, the problems that in part of existing cutting equipment for housing construction, a handheld trephine is a common tool for wall cutting operation, but the handheld trephine has a certain weight, and a worker needs to continuously lift the grabbing part of the handheld trephine when cutting upwards are solved. And if the lifting time is too long, the arm fatigue of the worker is easy to occur, and then the lifting force loss is caused, so that the handheld trephine falls off, and the construction safety risk is greatly increased.

The utility model discloses an ultra-thick concrete top plate supporting system for a vestibule of a workshop of a roller mill. The device comprises an entrance top plate supporting frame and a vestibule top plate supporting frame, the entrance top plate supporting frame is a scaffold, the vestibule top plate supporting frame comprises two rows of steel stand columns arranged on the two sides in the longitudinal direction of a vestibule, and each row of steel stand columns comprises a plurality of vertical steel stand columns arranged at intervals; the bottom end of each steel stand column is fixedly connected with an embedded part embedded in a concrete raft, a longitudinal main beam is arranged at the top end of each row of steel stand columns, a sand box with a sand discharging opening is arranged between each longitudinal main beam and the corresponding steel stand column on the lower portion of the longitudinal main beam, and a plurality of transverse secondary beams are arranged on the upper portions of the two longitudinal main beams at intervals. Phi 48 steel pipes and square timbers are sequentially and fully laid on the upper portions of the transverse secondary beams from bottom to top, and a diagonal bridging is fixedly connected between every two adjacent steel stand columns; the steel stand columns are steel pipes with the diameter of 350 mm, the longitudinal main beams are I30b double-spliced H-shaped steel, the transverse secondary beams are I30b H-shaped steel, and the diagonal bridging is channel steel.

The present invention discloses an automatic retracting and releasing mechanism for the tail rope of a motorized capstan. The mechanism comprises: a frame; a fixed angle transmission box and a clamping and fixing block are arranged at intervals on the frame; a base is arranged in the middle of the frame between the fixed angle transmission box and the clamping and fixing block, a rotating angle transmission box is rotatably arranged on the base, and a spring is arranged between the rotating angle transmission box and the clamping and fixing block; a rope clamping wheel is arranged on the output shaft on the same side of the fixed angle transmission box and the rotating angle transmission box; a transmission device is connected to the power input shaft of the fixed angle transmission box and the rotating angle transmission box to drive the rope clamping wheels of the fixed angle transmission box and the rotating angle transmission box to rotate in opposite directions at the same speed; the power input shaft of the transmission device is connected to the drum shaft of the motorized capstan through a one-way transmission mechanism. The present invention has a simple overall structure and is easy to use. Less devices are added outside the motorized capstan body, which avoids the difficulty of transportation; and it is not strictly restricted by the construction site.

The utility model relates to a large steel pipe pile feeder which comprises a cylinder body, an outer sleeve type skirt cylinder, an inner lifting lug, a lower flange and annular round steel. The upper half part of the barrel is of a hollow cylindrical structure, and the lower half part of the barrel is of a hollow conical structure; the internal lifting lugs are fixedly connected to the inner wall of the cylindrical structure of the barrel body in a circumferentially and uniformly distributed manner; the lower flange is correspondingly and fixedly connected to the bottom end of the conical structure of the cylinder body; the annular round steel is arranged above the lower flange and is correspondingly and fixedly connected with the outer side of the circumference of the conical structure of the cylinder body; the outer side of the lower portion of the conical structure of the cylinder body is coaxially sleeved with the outer sleeve type skirt cylinder, and the top of the outer sleeve type skirt cylinder is correspondingly connected to the upper portion of the edge of the annular round steel in a clamped mode. On the premise that the energy of the pile hammer is met, the problem that the hammer cap is not matched with the pile diameter is solved, the hammer cap does not need to be replaced, the construction cost is reduced, the construction efficiency and the applicability of the pile hammer are improved, and meanwhile the structural height, the structural gravity center and the risk of accidents can be reduced when the pile hammer is stored.

This invention relates to the field of robotic arm control technology, specifically disclosing an active vibration suppression system for a hydraulic robotic arm. The active vibration suppression system for a hydraulic robotic arm includes the following steps: Step 1, acquiring the driving force of the hydraulic cylinder of the hydraulic robotic arm as a vibration signal; Step 2, performing multi-window function filtering on the vibration signal to extract the overall trend of the vibration signal; Step 3, using a narrow time window function to identify the maximum and minimum values ​​of all signals within a wide time window function, and sliding point by point around the test point to further capture the detailed changes within the narrow time window function. If the point is the maximum or minimum value within the narrow time window function, then that point is output; Step 4, calculating the vibration index characterizing the system vibration; Step 5, calculating the joint angles of the hydraulic cylinder based on the actual stroke, subtracting the joint angle θ from the desired angle, deriving the vibration joint angle information that should be compensated, and performing compensation.

The present invention relates to a rotor yoke lamination locating pin lifting device, which comprises a hydraulic pressure device, a locating lifting rod, a fixing nut and an annular hydraulic cylinder, wherein an annular cylinder barrel is provided in the annular hydraulic cylinder, a piston barrel is provided in the annular cylinder barrel, a connecting stud for connecting the yoke lamination locating pin is provided at the bottom end of the locating lifting rod, and a threaded section is provided at the top end. The present invention adopts hydraulic oil cylinder drive for operation control, the lifting force meets the lifting requirements, the pulling force is uniform, stable and controllable, the lifting height can be measured and controlled in real time, the center of the lifting device is basically coincident with the center of the yoke lamination locating pin, so that the force applied during the lifting process of the yoke lamination locating pin is vertical, there is no horizontal force component, no shear force is generated, and the bolt shearing is not easy to occur, the operation is safe and reliable, and the construction safety risk is low.

The invention relates to the technical field of equipment debugging engineering, in particular to an equipment debugging method and an equipment debugging platform. When the equipment in the existing equipment room is replaced and debugged, the height-adjustable equipment debugging platform is used for placing new equipment in the equipment room, so that the height of the equipment debugging platform can be adjusted to the same horizontal position as that of a forklift; therefore, new equipment on the forklift can be transversely pushed to the bearing platform manually by using an auxiliary tool, and manpower and material resources are saved; and after the new equipment is transferred to the bearing platform, the bearing platform is adjusted to a proper height through the height adjusting mechanism, so that a cable can penetrate through the bottom space of the bearing platform for wiring, and debugging operation is facilitated. Even if a plurality of devices need to be synchronously replaced when the system devices need to be subjected to large-scale transformation and replacement, the method can be adopted to transfer, carry and debug a plurality of new devices indoors, the situation that holes are punched in the ground to damage a house structure is not needed, and the construction risk is reduced.

The utility model belongs to the technical field of continuous beam building construction equipment, and particularly relates to a curve walking adjusting device of a continuous beam intelligent suspension grouting bridge fabrication machine, which comprises two supporting structures respectively positioned at the front end and the rear end of a main frame and used for supporting and lifting the main frame; the cross beams are fixedly mounted at the tops of the supporting structures; the translation sliding beam sleeves the cross beam and is in sliding fit with the cross beam in the transverse direction; the first translation hinge lug is fixedly mounted at the top of the translation sliding beam; the second translation hinge lug is fixedly mounted at the top of the cross beam and is in sliding fit with the translation sliding beam in the transverse direction; the fixed end of the translation oil cylinder is fixedly connected with the second translation hinge lug, and the movable end is rotationally connected with the first translation hinge lug; the two pairs of fixing bolts are symmetrically distributed at the top of the translation sliding beam in the left-right direction, and the bottoms of the fixing bolts penetrate through the cross beam, are in sliding fit with the cross beam in the transverse direction and are used for connecting the translation sliding beam with the main frame. The utility model has the advantage that the vertical displacement and the transverse displacement of the main frame can be simultaneously controlled.

The invention discloses a bracket for mechanical installation, which comprises a bottom plate, a base arranged on the periphery of the bottom plate, a screw vertically arranged on the base, a worm gear sleeved at the bottom of the screw, a servo motor arranged on the base, an output shaft of the servo motor extending in the horizontal direction, a worm sleeved on the output shaft of the servo motor, and the worm engaged with the worm gear. The screw rod is sleeved with a lifting assembly, the lifting assembly is connected with a lifting support, and the lifting support is fixedly arranged on the base. According to the bracket for mechanical installation, the problems that an existing bracket is inconvenient to use and low in working efficiency are solved.

The invention relates to the field of building construction, in particular to a uniform-section tunnel oblique crossing top-lifting method. The special-shaped lagging jacks are adopted at the intersection positions of the uniform-section tunnels, the structural forms of the special-shaped lagging jacks are different according to different intersection angles between the special-shaped lagging jacks and the lines, and meanwhile the structural stability of the oblique intersection positions is guaranteed through the arrangement of the inclined struts and the portal frames. According to the oblique crossing uniform-section tunnel roof supporting structure, the problem of primary supporting construction of the oblique crossing position of the uniform-section tunnel is effectively solved, the construction quality is improved, and the construction safety risk is reduced.

The invention discloses a continuous dismantling method for a guide beam before incremental launching construction, which is characterized in that a hanging bracket fixing device and a hanging bracket structure are mounted on a cover beam to serve as a fixing foundation of jacking equipment and a counter-force support portal, so that the jacking equipment and the counter-force portal can respectively form support at the bottoms of two different guide beam sections; in the dismantling process, the first guide beam section located at the front end can be jacked through jacking equipment so that the first guide beam section can be lifted to the top of the second guide beam section located at the rear end, and then the first guide beam section is dragged so that the first guide beam section can slide to the rear portion along the second guide beam section in a sliding mode; therefore, the guide beam is demounted section by section while pushing is carried out; according to the method, high-altitude operation in the guide beam dismantling work can be effectively reduced so as to reduce the construction safety risk, and continuous segmented dismantling of the guide beam is achieved so as to improve the construction efficiency.

The utility model discloses a three-way temporary restraining device for a tower beam of an I-shaped steel concrete superposed beam cable-stayed bridge, which comprises a vertical temporary restraining part, a longitudinal temporary restraining part and a transverse temporary restraining part, the vertical temporary restraint comprises a plurality of anchoring cushion stones arranged on a lower cross beam of the cable bent tower, vertical lifting cushions supported between the anchoring cushion stones and the steel beams and prestressed steel beams for anchoring the lower cross beam and the steel beams into a whole, and the prestressed steel beams penetrate through the anchoring cushion stones; the longitudinal temporary restraint comprises a seamless steel pipe for connecting the bottom of the steel beam and the lower cross beam into a whole in the longitudinal direction, and the transverse temporary restraint comprises limiting profile steel which is fixedly connected with an embedded part on a bridge deck on the top of the steel beam and an embedded part at the tower column. The utility model has the characteristics of simple on-site construction operation, high construction efficiency, low safety risk and high economic benefit.

The utility model discloses a curved section small section box culvert haunching lining trolley which comprises a trolley body and a formwork assembly composed of a top formwork, a pair of side wall formworks and a pair of haunching formworks, the lining trolley is formed by splicing at least two trolley sections, the bottom of each trolley section is provided with a walking wheel, and the bottom of each trolley section is provided with a walking wheel. An automatic vertical telescopic driving assembly is arranged between the top formwork and the top of the trolley body, side formwork supporting rods are arranged between the two side wall formworks and the side face of the trolley body, and haunching supporting rods are obliquely installed on the haunching formwork and the trolley body. And the two haunching templates are respectively hinged between the side wall template and the top template on the corresponding side. A detachable assembled trolley is adopted in box culvert construction, the trolley can be used in a whole-section mode or used separately and independently to achieve rapid construction of the small-curve box culvert, meanwhile, the haunching formwork is installed in a hinged mode, the independent supporting rod is additionally arranged, rapid formwork removal can be achieved under the action of gravity and the telescopic rod, the lining structure construction efficiency is improved, and the construction safety risk is reduced.