1402 results about "Abutment" patented technology

The invention provides an anti-seismic safety evaluation method, relates to the field of anti-seismic safety evaluation of high arch dams, and establishes a finite element mesh model which is more in line with the real situation and comprehensively considers coupling of dam body damage and potential sliding block sliding instability damage of a dam abutment. A concrete damage evolution curve is obtained based on a concrete material dynamic mechanical test, the maximum credible seismic oscillation is scaled to a plurality of seismic oscillation intensity levels according to a certain proportion by adopting an incremental dynamic analysis method, a series of nonlinear dynamic response analysis under different overload coefficients is carried out, and the maximum credible seismic oscillation intensity level is calculated according to an analysis result. An anti-seismic performance evaluation index which is easier for actual engineering monitoring and can comprehensively characterize coupling of two failure modes is provided, a fitting curve of relative residual displacement along with the change of an overload coefficient is established, and a method for quantitatively dividing different failure levels is provided. The development of high arch dam-foundation system anti-seismic safety evaluation from only consideration of a single failure mode to comprehensive consideration of coupling of multiple failure modes is developed and promoted.

A water flosser with a unidirectional sealing device includes a shell and a second check valve. A water storage chamber and a liquid outlet communicated to the water storage chamber are provided inside the shell. The liquid outlet is arranged at a bottom of the water storage chamber. The shell downwards extends along an edge of the liquid outlet to form a first abutment block. A protruding second abutment block is arranged in the shell; the second abutment block is arranged towards the first abutment block. The second check valve is provided with an abutment board. The first abutment block abuts against an upper surface of the abutment board. The second abutment block abuts against a lower surface of the abutment board, to limit the second check valve between the first abutment block and the second abutment block.

The invention discloses a simply-supported bridge external prestress supporting structure and an implementation method thereof, and relates to the technical field of bridge reinforcing engineering, the simply-supported bridge external prestress supporting structure comprises a bridge, a bridge abutment or a bridge pier, and further comprises an oblique supporting system, and the oblique supporting system comprises oblique supporting rods, hinge plates, anchoring plates, reinforcing rods and longitudinal tie bars; the hinged plate is anchored on a bridge abutment or a bridge pier, one end of each oblique supporting rod is supported at the bottom of the bridge, the other end of each oblique supporting rod is hinged to the hinged plate, the anchoring plate is a full-length steel plate and is anchored through the reinforcing and reinforcing rods driven into the bridge abutment or the bridge pier, and one reinforcing and reinforcing rod is arranged at the installation position of each oblique supporting rod. The longitudinal tie bars are connected with the anchoring plates and the inclined supporting rods, and the inclined supporting rods are tensioned to support the bridge. The bearing capacity of the bridge is increased at low cost through in-vitro reinforcement, so that the traffic safety under the condition that the traffic load of the bridge is increased for a short time is met, and meanwhile, the adverse effects of reinforcement and reconstruction on traffic are reduced.

The invention relates to the technical field of data processing, and discloses a BIM-based bridge foundation deformation analysis method and system for bridge foundation rotary excavating pile construction. The method comprises the steps that three-dimensional scanning modeling is conducted on a construction site, a BIM model is established, a multi-source sensor is arranged to collect data, deformation characteristic parameters are extracted to construct a propagation model, space-time correlation analysis is conducted to generate prediction data, the deformation process is displayed in the BIM model in a multi-view mode, and construction parameters are optimized in combination with historical cases to form a control scheme. Accurate deformation analysis and intelligent construction control in the bridge foundation rotary excavating pile construction process are achieved.

The utility model provides a bridge abutment back roadbed structure which comprises a first graded broken stone hardcore, a first earthwork standard room, a first bidirectional geogrid, a foam light soil layer group, a second bidirectional geogrid, a second graded broken stone hardcore, a second earthwork standard room and a concrete layer group, the first graded broken stone hardcore, the first two-way geogrid, the foam light soil layer group, the second two-way geogrid, the second graded broken stone hardcore and the concrete layer group are sequentially arranged from bottom to top, the first geocell is arranged in the first graded broken stone hardcore, and the second geocell is arranged in the second graded broken stone hardcore. And the second geocell is arranged in the second graded broken stone hardcore. According to the abutment back roadbed structure, the settlement characteristic of the roadbed is improved, the overall stability and the bearing capacity of the roadbed are improved, and the dead weight of the roadbed can be effectively reduced, so that post-construction settlement at the bridge joint is reduced, the stability and the bearing capacity of the roadbed are improved, and the safety and the comfort of driving are ensured.

The invention provides a separated anti-seismic bridge abutment structure in a high-intensity earthquake area. The anti-seismic bridge abutment structure comprises a pile foundation; the platform body is mounted above the pile foundation and is connected to the lower part of the main beam through a seismic mitigation and isolation support; the box-type back wall is mounted at the rear upper part of the platform body and is not connected with the platform body; one end of the limiting pull rod is mounted on the transverse partition plate of the main beam, and the other end is mounted on the box-type back wall; the anti-lateral pile is mounted below the box type back wall; the rear portion of the box type back wall and the peripheral sides of the pile tops of the anti-lateral piles are filled with energy dissipation materials. Collision buffering materials are filled between the main beam and the box type back wall. From the perspective of'function separation to improve system reliability ', the vertical bearing function and the horizontal bearing function of a traditional seat-type bridge abutment are separated, and the horizontal bearing structure is specially designed, so that the problems of girder falling and the like caused by insufficient limiting capability of the traditional seat-type bridge abutment on a girder in the longitudinal bridge direction in an earthquake are solved, and the safety of the system is improved. And the anti-seismic requirement is fully met.

The utility model discloses a bridge ship collision prevention active protection device which comprises a laser range finder, a control assembly, a main bridge pier, a main bridge bearing platform, a separation type ship collision prevention facility structure, a polyurethane foam rotary drum and a riverbed, the laser range finder and the control assembly are arranged on the upper portion of the main bridge pier, and the main bridge bearing platform is arranged at the bottom of the main bridge pier. A plurality of separated ship collision prevention facility structures are arranged on the periphery of the main bridge bearing platform on the main bridge piers, polyurethane foam rotating cylinders are arranged on the separated ship collision prevention facility structures, and the other ends, away from the polyurethane foam rotating cylinders, of the separated ship collision prevention facility structures are used for being buried in a riverbed to be fixed. When the distance between the ship and the main bridge pier is detected to be smaller than a certain range through the optical distance measuring instrument, the control assembly controls the gas generator to inflate the gas bag to generate buoyancy, the polyurethane foam rotating drum is pulled to the water surface through the buoyancy to make contact with the ship, and the situation that the ship collides with the main bridge pier and consequently the main bridge pier is damaged is prevented.

A hydrostatic axial piston machine is disclosed, in the housing of which a drive shaft is rotatably mounted about an axis of rotation. The housing comprises a pot-like housing part having a first abutment and a cover-like housing part having a second abutment. The two abutments are clamped against one another in a sealing manner. A first fitting pin is inserted precisely into a first fitting recess of the first abutment on the one hand and into a second fitting recess of the second abutment on the other hand. A second fitting pin is provided on a side opposite the axis of rotation, which is inserted precisely into a third fitting recess of the first abutment on the one hand and into a fourth fitting recess of the second abutment on the other hand. The second fitting recess has a radial widening relative to the axis of rotation, whereby the second fitting recess is a slotted hole and / or a fitting groove.

The invention relates to a bridge abutment settlement deformation monitoring device and method, and belongs to the field of bridge monitoring, the bridge abutment settlement deformation monitoring device comprises two bearing frames arranged on one side of a bridge pier and a steel wire rope I arranged between the bearing frames and used for supporting a connecting support, and the top of the connecting support is provided with a monitoring mechanism; the monitoring mechanism comprises a plurality of piston cylinders adjustably arranged at the top of the connecting support, piston push rods are slidably arranged at the tops of the piston cylinders, extension rod pieces fixedly connected with the piston push rods are fixedly arranged on one side of the pier, and display sleeves are fixedly arranged on the two sides of the connecting support. The display sleeve is communicated with the piston cylinder body through a connecting pipeline and used for transmitting liquid prefabricated in the piston cylinder body, and a piston sliding block is arranged in the display sleeve in a sliding mode. The double steel wire ropes and the tension jack form an elastic supporting system to buffer vibration, the hydraulic linkage design converts tiny settlement into visual displacement, the spring reset mechanism is matched to improve data reliability, automatic reset is achieved, continuous monitoring is supported, and the monitoring range is expanded.

The present invention relates to a two-way jacking construction method for a bridge with a complex vertical curve on a two-way longitudinal slope. The specific steps are as follows: The main girder is divided into a left main girder and a right main girder. Erection supports and jacking piers are arranged in the steel structure assembly area, and at the same time, jacking piers in the water are arranged. Walking jacks and steel bearing beams are arranged on the jacking piers and the bridge abutments; The left main girder and the right main girder are assembled, and the assembled left main girder and right main girder are both rotated by a certain angle with the closure end as the rotation point to make the left main girder and the right main girder in a horizontal position, and the guide beam is welded; Jacked to the designated position; After the left main girder and the right main girder are jacked to the jacking piers in the water, the guide beam is removed and the alignment of the main girder is adjusted; The left main girder and the right main girder are closed at the mid-span and the girders are lowered. The present invention transforms the jacking construction of a bridge with a complex vertical curve on a two-way large longitudinal slope into two simple horizontal jacking constructions of the bridge. The jacking process is greatly simplified, the workload of adjusting the pads of each jacking pier is reduced, the operation is simple and safe, the process is concise, and it has remarkable economic benefits.

The invention provides a composite pile foundation structure for road surface rigidity optimization of a road transition section and a design and use method of the composite pile foundation structure, and relates to the technical field of composite pile foundations. The composite pile foundation structure can be applied to an embankment foundation and a bridge abutment pile foundation and comprises a bearing platform, a pile cap, a gasket, an elastic composite plate, replaceable filler, a pile and a pile end self-adaptive deformer. The design and use method of the bridge abutment pile foundation is guided by the load settlement characteristic of the butted roadbed, and the design and use method of the embankment composite pile foundation is guided by the settlement control standard. Design variables comprise the pile length, the pile diameter, the pile number, the compression thickness of the elastic composite plate, the arrangement depth of the replaceable filler, the limit pile side friction resistance of the replaceable filler and the compression modulus of the replaceable material, the structure can optimize the overall rigidity of the road surface on one side of the abutment, the phenomenon of bump of the abutment is effectively avoided, zero-differential settlement is achieved theoretically, and the construction efficiency is improved. And the settlement index can be controlled in the application of an embankment foundation.

The present disclosure provides an abutment structure and an abutment method thereof. The abutment structure includes a body portion, an abutment portion, and an elastic element, so that an elastic abutment space is formed between the body portion and the abutment portion. Alternatively, the abutment structure is provided with a wheel member, so that an elastic abutment space is formed between the abutment portion and the wheel member and the body portion. Smoother movement and effects of abutment and limitation can be achieved through the abutment portion, the wheel member, or cooperation between the abutment portion and the wheel member.

The invention discloses a device for treating bumping at a bridge head based on negative Poisson's ratio internal hexagonal reinforced soil, which comprises negative Poisson's ratio metamaterial structures, the negative Poisson's ratio metamaterial structures comprise first negative Poisson's ratio metamaterial structures, and the first negative Poisson's ratio metamaterial structures are embedded in slope surfaces where road surfaces on two sides are connected with bridge abutments. The first negative Poisson's ratio metamaterial structure is formed by uniformly arraying a plurality of negative Poisson's ratio unit cell structures, the negative Poisson's ratio metamaterial structures are embedded in slope surfaces where road surfaces on the two sides are connected with a bridge abutment, the section of each negative Poisson's ratio unit cell is in a hollow inner hexagon shape, each negative Poisson's ratio unit cell is composed of reinforced soil, and an inner cavity of each negative Poisson's ratio unit cell is filled with a soil layer. The device is simple in structure, high in operability and capable of coping with different differential settlement, thereby being wide in application range.

The utility model relates to a hole collapse prevention device in a coal seam gas extraction drill hole, which belongs to the technical field of coal seam gas extraction and comprises a central column positioned at the center, and a hole is formed in the central column along the height direction; and an abutting mechanism for resisting the pressure of the coal body and a control mechanism are arranged outside the central column. The multiple abutting mechanisms are arranged on the periphery of the center column and distributed in a circumferential array mode. Each abutting mechanism comprises a connecting plate, and the connecting plates are parallel to the central axis of the central column. And two groups of abutting assemblies which are symmetrically arranged up and down are arranged between the connecting plate and the central column. An irreversible elastic piece is fixedly installed between the center column and the connecting plate, so that the movable plate and the inner wall of the drill hole are confronted, and therefore the drill hole is prevented from collapsing. The abutting mechanism and the control mechanism comprise a plurality of springs, the counterforce is improved, and therefore the hole collapse prevention effect is improved.

The invention provides a hydropower station dam abutment slope GNSS automatic surface deformation monitoring system and method, and the system comprises a sensing layer which is used for collecting the GNSS original observation data of each monitoring point in a slope monitoring region at each moment within a preset time length; the data resolving module is used for preprocessing the GNSS original observation data and then solving the preprocessed data by using a multi-base-station differential positioning algorithm to obtain three-dimensional coordinates of each monitoring point at each moment; the data resolving module is also used for determining the deformation data of each monitoring point in a preset duration; the linkage triggering module is used for performing deformation monitoring in the slope monitoring area by using an appearance monitoring automation system when the current comprehensive judgment displacement change rate is greater than or equal to a preset displacement change rate threshold value; and the early warning management module is used for determining an early warning level and performing early warning. According to the technical scheme provided by the invention, the intelligent level of slope safety monitoring and the slope safety emergency management and control capability of the hydropower station can be further improved.

The utility model belongs to the technical field of wall water seepage testing, and particularly relates to an outer wall water seepage testing device for engineering supervision, which comprises a base, an L-shaped plate fixed at the right end of the base, a portal frame fixed at the upper end of the L-shaped plate, a screw rod rotationally assembled on the rear side of the portal frame, a driving component arranged on the screw rod and a sliding block in threaded connection with the screw rod, the right side of the sliding block is connected with an abutting shell, a water leakage groove is formed in the lower end of the abutting shell, and a water receiving box located on the lower side of the abutting shell is installed in the L-shaped plate. The spraying height can be adjusted, clean water can be prevented from splashing by arranging the abutting shell, water flows downwards into the water receiving box through the water leakage groove to be collected, the water in the water receiving box is pumped into the water storage tank again by arranging the water pump, recycling is achieved, and water resources are saved.

The invention belongs to the technical field of road and bridge construction application, and particularly relates to a bridgehead transition slab anti-sedimentation jacking device and a construction method thereof. Comprising a bridge abutment and a roadbed arranged on one side of the bridge abutment, lapping plates are arranged on the top face of the bridge abutment and the top face of the roadbed on the back of the bridge abutment, a pressure barrel is pre-buried in the roadbed on the back of the bridge abutment, a vertically-arranged piston pipe is arranged at the bottom of the pressure barrel, a piston is sleeved with the piston pipe, and a pressure disc is arranged at the end, extending out of the piston pipe, of the piston. The pressure disc is arranged in the pressure barrel in a lifting mode, the piston pipe penetrates through the bottom of the pressure barrel, an oil tank is arranged at the end, away from the pressure barrel, of the piston pipe, an output pipe is arranged on the oil tank, and a jacking oil cylinder is connected to the end, away from the oil tank, of the output pipe. According to the device provided by the invention, extra monitoring is not needed, and the jacking oil cylinder is promoted to move only by utilizing pressure change generated by natural sedimentation, so that the tower plate is supported.

The invention relates to a shock insulation plate type rubber support for a highway bridge. The shock insulation plate type rubber support comprises a protective rubber sleeve, an embedded steel plate, a seal coat steel plate and an anchor rod, the seal steel plates are coaxially and fixedly connected to the upper end and the lower end of the protective rubber sleeve respectively; the embedded steel plates are coaxially and fixedly connected to the outer side surfaces of the sealing steel plates at the two ends respectively; anchor rods are fixedly connected above the four corner areas of the upper end pre-embedded steel plate and below the four corner areas of the lower end pre-embedded steel plate respectively; the upper-end pre-embedded steel plate is fixedly connected with the bottom of a bridge through an anchor rod, and the lower-end pre-embedded steel plate is fixed to the top of an abutment through an anchor rod; a plurality of steel plate layers are evenly distributed in the protective rubber sleeve in the axial direction, and a rubber layer is arranged between every two adjacent steel plate layers. According to the support, corrosion of the steel plate layers can be protected through the rubber layers above and below the steel plate layers and around the steel plate layers, the steel plate layers embedded between the rubber layers can limit transverse deformation of the rubber layers under the action of vertical loads, and therefore the vertical rigidity of the support is improved, and meanwhile the damping energy dissipation mechanism is matched to effectively improve the cushioning capacity of the support in the vertical direction.

The invention relates to an assembly type steel structure center bearing column which comprises a concrete base, and an installation groove cavity is formed in the concrete base. A plurality of groups of prefabricated steel supports are arranged in the mounting groove cavity, and an inserting cavity is defined by the plurality of groups of prefabricated steel supports; the outer wall of the center adjusting supporting pipe is combined with the inserting cavity in an abutting mode. The lower end of the central column is combined with the bottom of the mounting cavity; the profile steel cross beams are horizontally arranged at the upper end of the center stand column, the middle connecting bodies are arranged at the connecting ends of the adjacent profile steel cross beams, rigid ropes are arranged on the middle connecting bodies, one ends of the rigid ropes are connected with the center adjusting supporting pipe, and the adjusting mechanism adjusts the center adjusting supporting pipe to ascend and descend in the vertical direction to tension the rigid ropes. The center bearing column can facilitate installation of the stand column and the base and can support the stand column so as to resist uneven horizontal torque applied to the stand column by a profile steel cross beam, the combination stability of the stand column and the base is ensured, and the stability of a whole steel structure building is ensured.

The invention discloses a vibration displacement sensor system for bridge operation monitoring and a use method thereof, and belongs to the technical field of bridge engineering. The system comprises data acquisition ends and data receiving and processing ends, the data acquisition ends are fixed to bridge piers, bridge abutments or the side faces of beam slabs, each data acquisition end comprises a capacitive acceleration sensor, a microwave signal antenna, a double-lithium battery pack and a solar cell panel, and the data receiving and processing ends are installed at stable positions of the two banks of a bridge. Comprising a multi-channel microwave receiving module, an edge computing unit, a 4G / 5G / LoRa / NB-IoT multi-network transmission module and a phase difference computing module. According to the invention, the problems of insufficient stability and poor environmental adaptability of existing data transmission are solved. According to the invention, through integration of temperature compensation, anti-interference communication, intelligent power supply optimization and rapid installation design, high-precision, all-weather and low-power-consumption monitoring is realized.

The prefabricated pier wet joint vacuum pressure injection construction method comprises the steps that S1, when a pier column is prefabricated, a mud jacking pipeline is pre-buried, one end of the mud jacking pipeline extends out of the bottom of the pier column, and the other end of the mud jacking pipeline extends out of the side face of the pier column to serve as a connecting end; s2, a pier column and a wet joint grouting formwork are installed; s3, the connecting end of the mud jacking pipeline is connected with a vacuumizing device; s4, self-compacting concrete is poured into the wet joint grouting formwork till the top of the wet joint grouting formwork is filled with the self-compacting concrete; s5, a vacuumizing device is started until the self-compacting concrete pumped out of the grouting pipeline is uniform and compact, and then the vacuumizing device is stopped; s6, after the wet joint concrete reaches certain strength, the vacuumizing device and the wet joint grouting formwork are disassembled; and S7, after the wet joint concrete reaches the design strength, the part, extending out of the pier column, of the mud jacking pipeline is cut off and beautified. According to the method, the compactness quality of the pier and abutment wet joint is improved, and rapid pouring connection of the prefabricated pier column and the bearing platform wet joint is achieved.

The invention relates to the technical field of bridge erection, and provides an overline curve steel box girder installation method which is used for erecting a prefabricated and formed curve steel box girder on a limit and comprises the steps that the middle and one end of the curve steel box girder are jacked through a first self-propelled module transport vehicle set and a second self-propelled module transport vehicle set correspondingly; moving the curved steel box girder to one side of the limit; the first self-propelled module transport vehicle set serves as a rotation center, and the first self-propelled module transport vehicle set and the second self-propelled module transport vehicle set drive the curve steel box girder to rotate until the other end of the curve steel box girder crosses the limit; and a third self-propelled module transport vehicle group is arranged on the other side of the limit to support the other end part of the curve steel box girder. According to the invention, the problems that the swivel construction difficulty is high, the swivel speed is relatively slow and the bridge superstructure cannot be quickly replaced by using the existing abutment during the installation of the curved steel box girder at present can be solved, and meanwhile, the cross-line installation of the curved steel box girder can be realized.

The invention discloses a PE drainage pipe and a pipeline installation assembly, and relates to the field of drainage pipe installation, the PE drainage pipe comprises a connecting shell arranged among a plurality of pipeline main bodies, annular grooves are formed in the positions, located on the pipeline main bodies, of the two sides of the connecting shell, and extrusion concave surfaces are formed in the positions, located on the side walls of the two annular grooves, of the connecting shell; an abutting flaring capable of expanding under stress is formed in the position, located at the notch of each annular groove, of the connecting shell, a plurality of movable cavities are formed in the positions, located at the bottoms of the two annular grooves, of the connecting shell, and one end of each movable cavity communicates with an extrusion opening formed in the corresponding annular groove and aligned with the corresponding extrusion concave surface; and locking openings are formed in the sides, located at the extrusion openings, in the multiple movable cavities and communicate with the annular groove. A physical transverse inserting mode is used, sealing connection of the pipeline is guaranteed, meanwhile, assembling operation is easy, installation is convenient, distortion damage is avoided, and the installation cost is reduced.

Disclosed in the present invention is an overall construction process for a floating bridge. The process comprises: procedure I, in which a plurality of floating bridge sections are assembled on a water surface, with each floating bridge section being assembled by welding; procedure II, in which the plurality of floating bridge sections are assembled into a floating bridge body; procedure III, in which a shore connection cable-stayed bridge, a bridge abutment, and a suction anchor of a mooring system are constructed; procedure IV, in which a shore-side end of a floating bridge transition section is connected to a water-side end of the bridge abutment; procedure V, in which one end of the floating bridge body is connected to a water-side end of the floating bridge transition section; procedure VI, in which the other end of the floating bridge body is connected to a water-side end of the shore connection cable-stayed bridge; and procedure VII, in which the floating bridge body is connected to the mooring system. In the procedures IV and V, the cooperation of four winches and four cable piles and the guide of a guide mechanism are used; and in the procedure VI, the cooperation of the four winches and the four cable piles is used. The present invention can effectively ensure smooth and safe transition between two ends of a floating bridge column body and a shore connection structure.

The invention discloses a vertical lifting movable bridge which comprises a main beam, a bridge abutment, a support, a pile foundation, a pile leg and a lifting device, the bridge abutment is supported on the foundation through the pile foundation, the support is arranged on the top face of the bridge abutment, the main beam is parked on the support, the pile leg is vertically arranged on the top of the bridge abutment, the bottom end of the pile leg is embedded in the bridge abutment, and the lifting device is arranged on the pile leg in a sliding and sleeving mode. The two ends of the main beam are fixedly connected with lifting devices which can vertically ascend and descend along the pile legs so as to drive the main beam to vertically ascend and descend. The movable bridge has the advantages that the defects that a conventional vertical lifting movable bridge needs to be provided with a huge bridge tower and a complex structure are overcome, the structure is simple, the occupied area is small, and the application range is wide; 2, a lifting mode can be set according to local conditions according to opening requirements of the movable bridge, so that the manufacturing cost is saved; and 3, a lifting assembly in the lifting device adopts a working mode that a hydraulic oil cylinder is pulled, so that the problem of stability of a pressing rod when the oil cylinder is pressed can be avoided, the size and the manufacturing cost of the oil cylinder are reduced, an unfavorable working environment that the oil cylinder is pressed is changed into a favorable working environment that the oil cylinder is pulled, the service life of the oil cylinder can be prolonged, and the maintenance cost is reduced.

The invention discloses an arch dam abutment block safety evaluation method considering spatial force system decomposition, which comprises the following steps of: calculating an external load borne by an arch dam abutment block by adopting a finite element method, judging the sliding direction of the block, decomposing the external load borne by the block on a block sliding calculation spatial force system, and calculating the sliding force and the anti-sliding force of the block. And calculating a block safety coefficient, and evaluating a block safety state. According to the method, spatial force system decomposition is utilized, the block sliding force and the block anti-sliding force can be accurately decomposed to the block sliding-out direction, the numerical values and the acting directions of the block sliding force and the block anti-sliding force can be more accurately obtained, and the safety of the dam abutment block can be more accurately evaluated. The invention further provides arch dam abutment block safety evaluation equipment.

An assembly type rotatable bridgehead steel transition slab under surface mine heavy traffic comprises H-shaped steel longitudinal beams, transverse partition plates, anti-sliding steel panels, connecting pin shafts, TST elastic plastic bodies, sleeper beams, expansion joint steel plates, steel bridge steel box girders and steel bridge abutment cover beams. The H-shaped steel longitudinal beams are arranged at equal intervals in the transverse bridge direction, the transverse partition plates are arranged in the longitudinal bridge direction, and the anti-sliding steel panel is arranged on the H-shaped steel and connected with the H-shaped steel and the transverse partition plates into a whole. The rotating steel plate is used for connecting the main beam web and the H-shaped steel web of the butt strap, and the rotating pin shaft penetrates through the lug plate to connect the main beam and the butt strap into a whole to achieve the rotating purpose. The TST elastic-plastic body is arranged on a bridge abutment cover beam and below an H-shaped steel longitudinal beam. And the expansion joint steel plate is arranged on the bridge head expansion joint. And the sleeper beam is arranged at the tail part of the steel butt strap. The device can be disassembled, assembled and reused according to the displacement of the steel bridge, and the steel transition slab can rotate, so that the bridgehead roadbed is allowed to generate certain settlement. And when the settlement is too large, backfilling and filling treatment can be carried out.

The invention discloses a reinforced soil bridge abutment system in a frozen soil area and a construction method of the reinforced soil bridge abutment system. The reinforced soil bridge abutment system comprises a reinforced soil bridge abutment body, a ground source heat pump regulation and control system, a clean energy power supply system and a monitoring system. The reinforced soil bridge abutment body comprises filling soil, rib materials and a prefabricated modular wall face, a buried circulating pipe group of the ground source heat pump regulation and control system deeply penetrates through a frozen soil layer to a stable soil layer, and a heat pump host transfers heat of a bridge abutment base in a high-temperature season to prevent frozen soil from melting by means of a double-circulation pipeline and depending on temperature sensor data and weather forecast data. And reversely supplementing heat in low-temperature seasons to inhibit frost heaving. The heat pump host and the monitoring system of the clean energy power supply system supply power in a time-sharing manner to guarantee core functions. The monitoring system comprises a temperature sensor, a strain gauge and an inclinometer. The problems of stability and frost heaving and thaw collapse of the abutment in the frozen soil area are effectively solved, and economic and social benefits are achieved.

The invention discloses a fabricated bridge structure health monitoring method and system, and relates to the technical field of structure health monitoring. Vibration, strain and temperature data are collected at evaluation nodes of a support, a beam end, a bridge pier and a bridge abutment, network addresses are distributed, and a mapping table is constructed, so that each piece of data can be accurately associated with a specific part of a bridge. Features of the vibration data are extracted, temperature change and strain data are analyzed, maximum and minimum values are recorded, the data and tolerance range are compared to judge abnormity, and marks are recorded if at least three items of the same evaluation node are abnormal. And establishing a data comparison logic, comparing an evaluation node with abnormal data with two evaluation nodes which are the same in position and closest to each other, if the data are abnormal and change trends are different within 24 hours, performing early warning, and if the data are abnormal and change trends are consistent within 24 hours, retaining the data. The method can accurately position the problem position, comprehensively reflect the structure state, monitor whether the assembly type bridge structure is healthy or not in real time, give an early warning in time, and reduce false alarms.

The utility model discloses a winch traction shipping system designed for a non-floating wharf. The winch traction shipping system comprises a self-propelled barge, a steel trestle, a supporting system, a shipping trolley and a traction system. One end of the steel trestle is in sliding connection with the self-propelled barge, the other end of the steel trestle is hinged to the embankment abutment, the supporting system comprises a supporting pile foundation and a supporting door frame, the supporting door frame is supported by the supporting pile foundation, and a hydraulic supporting rod is arranged on the supporting door frame and hinged to the steel trestle; the traction system comprises a brake winch on the embankment, a shipping traction winch on the self-propelled barge and an in-place traction winch, and the self-propelled barge is positioned by an adjustable pile gripper assembly; according to the shipping system, the bridge body is supported through the hydraulic supporting rods of the pile foundation portal frame structure, one end of the bridge body is in sliding connection with the deck of the self-propelled barge, the other end of the bridge body is connected in a hinged mode, the posture can be adjusted according to lifting of the self-propelled barge, the supporting rigidity of the steel trestle and safety and stability of the self-propelled barge are guaranteed, and the shipping method is simple, easy to implement, high in working efficiency and suitable for popularization and application. The shipping process is high in safety, and the total shipping cost is lower.