1480 results about "Earthquake resistance" patented technology

The invention relates to the field of building structure safety detection, and discloses a building structure anti-seismic performance monitoring method and system. The method comprises the following steps: acquiring multi-source response data such as acceleration, displacement, strain and inclination angle; obtaining a structure standard response based on wavelet denoising and standardization processing; adopting a multi-order modal recognition algorithm to extract structural dynamic characteristic parameters; performing structural damage evaluation based on the modal change index, and combining the yield strength, the load index and the displacement margin to calculate the residual bearing capacity of the structure; and finally, outputting an anti-seismic grade early warning signal. The system comprises a structure response acquisition module, a modal identification and damage evaluation module and a residual bearing capacity calculation and early warning module. According to the method, real-time quantitative analysis of the performance of the structure under the earthquake or load effect can be achieved, the evaluation precision is high, the applicability is high, and the wide engineering popularization value is achieved.

The invention relates to the technical field of building information, and discloses an ancient building anti-seismic performance analysis and evaluation system based on BIM modeling, and the system comprises a building parameter obtaining module which is used for dynamically collecting component material attributes, structure connection states and historical damage parameters, recognizing structure weak links, and triggering a collaborative evaluation instruction; the modal feature analysis module and the seismic response simulation module are used for respectively extracting vibration modal feature parameters and seismic wave energy distribution parameters to obtain modal feature integrity indexes and dynamic stability evaluation values; the multi-source fusion judgment module synthesizes the indexes to generate a structure reinforcing or component repairing signal; the optimization parameter generation module is matched with the anti-seismic optimization strategy and generates structure reinforcement and node connection repair parameters; the system further comprises a damage coupling analysis module and a model iteration updating module, and monitoring of historical damage evolution and closed-loop updating of the BIM model are achieved. According to the system, precise evaluation and dynamic optimization of the anti-seismic performance of the historic building are realized.

Disclosed in the present invention is an anti-seismic simulation method for an existing building by considering a real damage state. The method comprises: determining a quantified component damage index on the basis of an observed component damage state; determining a material damage index of a damaged component on the basis of the component damage index; determining key parameters of a constitutive law for a damaged material on the basis of the material damage index; establishing a finite element model of a damaged building on the basis of the constitutive law for the material of the damaged component; and assessing the seismic risk and anti-seismic performance of the damaged building on the basis of the finite element model. In the present invention, a constitutive law for a damaged material is incorporated into a fiber model in OpenSEES, so that rapid modeling of a damaged building can be realized, thereby effectively reproducing the real damage of an existing building; and by using a seismic vulnerability analysis method, rapid assessment of the seismic risk and anti-seismic capability of the existing building can be realized, thereby further providing support for formulating reasonable reinforcement and reconstruction strategies by related departments.

The invention relates to a replaceable sliding anti-seismic device of a steel spring vibration isolator, which is used on a building foundation with multiple requirements of vibration isolation and seismic resistance, and belongs to the civil engineering industry. A replaceable sliding anti-seismic device of a steel spring vibration isolator comprises an upper structure, an upper buttress, a lower structure, a lower buttress, a central circular steel tube concrete column, a trapezoidal slidable connecting plate, a replaceable energy dissipation structure, a connecting pin, the spring vibration isolator, a vibration isolation rubber pad, a leveling steel plate and a bolt. The spring vibration isolators are connected with an upper structure and a lower structure through bolts to reduce the influence of vibration and small seismic load on an upper building, the trapezoidal slidable connecting plate is used for connecting the central circular steel pipe concrete column and the lower structure, and under the normal working condition, the replaceable energy dissipation structure supports the building and achieves the energy dissipation effect under the seismic load effect. After an earthquake, the use function can be quickly recovered by replacing the energy dissipation structure, and the concept of multi-stage vibration isolation and earthquake resistance is achieved. According to the invention, the comprehensive performance of vibration isolation and seismic resistance of the building is greatly improved.

The invention relates to the technical field of computer-aided anti-seismic analysis, and discloses an anti-seismic performance simulation test method and system for a concrete-filled steel tube structure, and the method comprises the steps: obtaining a parameter set of the concrete-filled steel tube structure; identifying a critical buckling mode and constructing a defect correction model; constructing a coupling damage index; constructing a numerical instability risk evaluation value based on the structure energy proportion; carrying out strong earthquake nonlinear time-history iterative solution; and outputting the anti-seismic performance index set and the coupling failure area. Compared with the prior art, the technical problem that Newton iteration divergence is prone to occurring in numerical solution under the coupling instability condition that traditional nonlinear finite element analysis is relied on for strong earthquake response calculation, especially when a steel pipe is subjected to local buckling and core concrete enters a high-pressure three-axis stress state is solved. Due to the fact that the local buckling and crushing damage coupling index and the self-adaptive time step length adjusting mechanism are constructed, the stability of the anti-seismic performance simulation result of the concrete-filled steel tube structure under the strong earthquake effect is improved.

The invention discloses a large-span arched steel truss with oblique supports and a construction method thereof, the steel truss is arched, the central structure of the steel truss is a pair of upper chords and a lower chord, the lower chord is located under the middle position of the pair of upper chords, and the two ends of each upper chord exceed the two ends of the lower chord in the chord direction; oblique supporting structures are symmetrically arranged at the two ends of a steel truss and used for supporting and installing the steel truss, and each oblique supporting structure comprises a reinforced steel concrete column, a steel column base, an A-shaped steel column and a back pulling steel rod, and the steel column base is directly or indirectly welded to the top end of a steel rib of the reinforced steel concrete column; the A-shaped steel columns incline upwards in the direction close to the chordwise midpoint of the steel truss, the two ends of the lower portions of the A-shaped steel columns are hinged to the pair of steel column feet respectively, the upper ends of the A-shaped steel columns are hinged to the ends of the lower chords, and the back-pulling steel rods incline upwards in the direction away from the chordwise midpoint of the steel truss, and the upper ends and the lower ends of the back-pulling steel rods are hinged to the ends of the upper chords and the steel column feet respectively. According to the steel truss, deflection deformation can be reduced, the anti-deflection performance is enhanced, the anti-seismic performance is improved, and steel is saved.

The invention discloses a comprehensive evaluation method for the health state of concrete filled steel tubes. According to the method, a multilevel evaluation index system for the health state of the concrete-filled steel tube structure is constructed, and factors influencing the health of the structure are divided into a plurality of key indexes including the ultimate bearing capacity, the overall stability performance, the anti-seismic performance and the like. The method comprises the following steps: firstly, quantifying each index by using a membership function in fuzzy mathematics, and constructing a membership matrix; secondly, determining the weight of each index according to the influence of each index on the whole bridge; then, the health state of the concrete filled steel tube is evaluated through the fuzzy comprehensive evaluation model, the structure health level is generated, an accurate health state evaluation result is provided, and the method is suitable for health monitoring and evaluation of complex concrete filled steel tube structures such as bridges, tunnels and high-rise buildings. The method has the advantages of being high in evaluation precision, wide in application range and easy and convenient to operate, and a scientific basis is provided for safety management and maintenance decision making of the concrete-filled steel tube structure.

A medical device, comprising a housing, a combined modular structure which is formed by connecting a board card and an interface panel to a main bracket; a first opening arranged on the housing for the insertion of the combined modular structure; a first locking structure for locking and fixing the combined modular structure to the housing; a screen assembly; a second opening arranged on the housing for mounting the screen assembly, and a second locking structure for locking and fixing the screen assembly to the housing. The integral arrangement of a functional module of a medical device helps to improve the assembly precision between various components, and ensure the reliability of the connection between components. The housing adopts an integral structure, has good waterproof and dustproof effects as well as low production costs; the present disclosure facilitates the assembly of board card and other components, as well as module configuration and modular testing while also having good seismic performance.

The invention provides a node connecting structure of a fabricated building and a construction method of the node connecting structure, and relates to connecting nodes for splicing prefabricated concrete columns with foundation column piers, ground beams, interlayer beams, top beams and columns. Beam column connecting joints connected with the ground beams are located at the position 0.6-1 m below the ground layer, and inter-column connecting joints are located at the position 0.9-1.2 m above the elevation of the middle axis of the interlayer beams. Each node adopts a built-in box-type steel pipe or a steel tenon-and-mortise component and is fixed through tenon-and-mortise matching of a steel tenon and a steel mortise groove and a high-strength bolt, so that rapid and accurate assembly of the beam column or between the columns is realized; and after connection is completed, a formwork is erected in a node area, high-strength concrete is cast in place, and a steel reinforced concrete stress component is formed. And the shear bearing capacity, the integrity and the anti-seismic property of the joint are obviously improved. Meanwhile, components are prefabricated in a factory and assembled in a dry mode on site, construction is convenient and fast, quality is controllable, and the structure is suitable for assembly type buildings with high-rise and high-seismic fortification requirements.

The utility model relates to a sliding shock insulation modular building which comprises a module group forming a building main body. The building foundation is used for bearing the module group; the sliding layer is arranged between the module group and the building foundation and comprises an upper sliding interface and a lower sliding interface which are fixedly connected with the bottom of the module group and the top of the building foundation respectively, and a sliding medium arranged between the upper sliding interface and the lower sliding interface; and the sliding starting control part is connected with the module group and the building foundation and is used for controlling the sliding starting state. Compared with the prior art, the earthquake response of an upper modular building can be reduced, non-structural members in the modules can be protected, the module units are lighter in design, the connection between the adjacent modules is simpler, and the connecting structure adapts to the characteristics of various layouts and stress; the anti-seismic performance of the modular building is improved through simple sliding seismic isolation measures which are low in manufacturing cost and convenient to construct.

The invention relates to the technical field of power cables, and provides a cross-linked polyethylene insulated power cable with an anti-seismic function, which comprises a cable body, the cable body is composed of a plurality of stranded wires, an insulating layer is arranged outside each wire, a filling layer and a belting layer are sequentially arranged outside the plurality of wires, and the insulating layer is arranged outside the plurality of wires. The cable comprises a cable body and further comprises a sheath layer, fixing seats, upper fixing frames, supporting assemblies and buffering assemblies, the sheath layer comprises an inner sheath and an outer sheath, the cable body is provided with a plurality of fixing seats, each fixing seat is provided with one upper fixing frame, the supporting assemblies are arranged between each fixing seat and the corresponding upper fixing frame, each fixing seat is provided with one buffering assembly, and the buffering assemblies are arranged on the supporting assemblies. According to the technical scheme, the problem that in the prior art, when a cross-linked polyethylene insulated power cable is arranged near a factory workshop or in a tunnel or other positions where vibration is likely to be generated, vibration can affect the cable through the ground or a supporting structure, and the cable is damaged is solved.

The present invention discloses a fuel cell engine, which comprises a fixed frame. The fixed frame includes a first side fixing plate, a second side fixing plate, a third side fixing plate and a fourth side fixing plate; a fuel cell, which includes a housing, an electric stack, a distributor, and a first end cap and a second end cap that are opposite in the third direction; a hydrogen supply system, which is installed on the first side fixing plate; a cooling circulation system, which is installed on the first side fixing plate; an air supply system, which is installed on the third side fixing plate; and a power distribution device, which is installed on the second side fixing plate. The fuel cell engine according to the embodiment of the present invention has the advantages of high integration, compact structure, high volume power density, small volume, easy assembly, high strength, good seismic resistance, etc.

The invention belongs to the technical field of anti-seismic performance detection, and discloses an anti-seismic performance detection device based on a building structure, which comprises a support base and a movable plate arranged above the support base and used for supporting, the movable plate is provided with a support disc used for connecting a test workpiece, the movable plate is rotatably connected with the support disc, and the lower end of the movable plate is provided with a transmission plate. A first sliding rail is connected to the lower end of the movable plate, a telescopic assembly is connected between the first sliding rail and the transmission plate, transmission rollers are connected to the bottom of the telescopic assembly, limiting plates are arranged on the two sides of the supporting base, limiting sliding grooves are formed in the limiting plates, and the transmission rollers extend into the limiting sliding grooves. According to the anti-seismic performance detection device based on the building structure, the anti-seismic performance of the building structure can be more accurately detected by setting vibration simulation in various directions, and vibration in different directions can be generated in different time periods according to different arrival time of various seismic waves generated by an earthquake to detect a building structure model; and the accuracy of detection data is improved.

The utility model discloses an anchor rod device for municipal construction, and relates to the technical field of municipal construction engineering. Comprising an anchoring head, a counterbore is formed in the anchoring head, the anchoring head is in threaded connection with an outer sleeve through the counterbore, an insertion rod is in threaded connection with the interior of the outer sleeve, a conical surface concave shoulder is arranged at the bottom end of the insertion rod, grooves are formed in the side walls of the periphery of the anchoring head, the grooves are communicated with the counterbore, claw bodies are hinged into the grooves, and the tail ends of the claw bodies are attached to the conical surface concave shoulder. According to the anchor rod device for building municipal administration, the inserting rod is lifted upwards by screwing the inserting rod, at the moment, the conical surface concave shoulder at the bottom end of the inserting rod moves upwards, the claw can be driven to expand outwards from the periphery of the anchoring head, and therefore the friction force between the anchor rod piece and a soil body or rock is enhanced, and the anti-drawing capacity of the anchor rod piece is effectively improved; the arranged guide rods, backing rings and buffer springs have certain buffering performance, deformation and displacement of the structure can be reduced, overall connection of the structure is enhanced, and the anti-seismic performance and stability of the structure are improved.

The invention provides an urban water supply system anti-seismic analysis method based on a multi-fineness digital twinborn model, and belongs to the technical field of intelligent disaster prevention and digital twinborn of urban infrastructure systems. Constructing a topological network model and a hydraulic model of the city-level pipe network; constructing a multi-fineness parameterized numerical model library, and designing a dynamic scheduling engine based on event response; constructing a bidirectional data conversion interface and a unified semantic framework, and constructing a multi-fineness digital twin model; performing simulation by using the multi-fineness digital twin model to obtain a real-time simulation result; based on the real-time simulation result, the comprehensive state of the urban water supply system is visualized, an emergency decision is made, and anti-seismic analysis of the urban water supply system is completed; the problems of precision and efficiency imbalance, collaborative decision-making obstacle and serious lagging of disaster scene response existing in anti-seismic analysis of an existing urban water supply system are solved.

The invention discloses a sleeve screw, a formwork supporting device, a formwork supporting system and a construction method of the formwork supporting system. The sleeve screw comprises a first sleeve, a second sleeve, a threading steel bar and a connecting screw. The formwork supporting device comprises a reinforcing device, the reinforcing device comprises profile steel in a reinforced concrete member, sleeve screws and a shaping formwork, each sleeve screw comprises a first sleeve, a second sleeve, a threading steel bar and a connecting screw, the sleeve screws are symmetrically arranged on the two sides of the profile steel, and the first sleeve and the second sleeve are connected with the shaping formwork. A connecting screw rod of the sleeve screw rod is fixed on the shaping template; the formwork supporting system comprises a formwork supporting device and a split bolt arranged outside the formwork supporting device, and a PVC sleeve is arranged on the outer side of the split bolt, the technical problem that holes are formed in profile steel can be effectively solved, meanwhile, the supporting strength is increased for a formwork, the anti-seismic property is enhanced, and the formwork supporting system is suitable for being used for a large-scale building. And meanwhile, the construction flexibility and convenience are improved.

The invention relates to the technical field of damping energy dissipation and vibration attenuation, and provides a displacement amplification type variable stiffness self-resetting energy dissipation damper which comprises a composite energy dissipater, a first rotating rod and a second rotating rod are arranged at the front end and the rear end of the composite energy dissipater, and a liquid damper is fixedly connected to the side face of the composite energy dissipater. The first rotating rod and the second rotating rod are hinged to building structures on the two sides through connecting rods. A friction energy dissipation system and an SMA energy dissipation system are integrated in the composite energy dissipater, the liquid damper is welded to a cavity cam of the composite energy dissipater through a transmission rod, and the liquid damper is hinged and fixed to the second support. Through combination of multiple mechanisms of the liquid damper, the friction energy dissipation system, the SMA energy dissipation system and the second-stage displacement amplification system, effective vibration reduction and energy dissipation in a wide earthquake input range are achieved, and the energy dissipation performance and the self-resetting capacity are remarkably improved. The method is suitable for various structural engineering fields requiring high-efficiency seismic resistance, and has a good application prospect.

The invention provides a method for analyzing anti-seismic performance of a steel reinforced concrete frame structure in a construction process, which comprises the following steps: S1, establishing a time-varying calculation model of the steel reinforced concrete frame structure in the construction process, the time-varying calculation model being used for simulating structural incompleteness and boundary condition change in a construction stage; s2, analyzing the anti-seismic performance of the steel reinforced concrete frame structure in the construction process by adopting a time-history analysis method, wherein the time-history analysis is based on a seismic wave acceleration time-history curve; s3, according to the time history analysis result, determining an earthquake response change rule of the steel reinforced concrete frame structure in the construction process; and S4, according to the earthquake response change rule, a measure for improving the anti-seismic safety of the steel reinforced concrete frame structure in the construction process is determined.

The invention provides a shock insulation tensile device working in the whole process of an earthquake, and relates to the technical field of building earthquake resistance. The vibration isolation device comprises a vibration isolation support fixedly installed between an upper buttress and a lower buttress and further comprises a plurality of tensile viscous dampers, the two ends of each tensile viscous damper are connected with the upper buttress and the lower buttress through universal hinges correspondingly, a C-shaped plate is arranged on one side of each tensile viscous damper, four fixing arms are fixedly installed on each C-shaped plate, and each C-shaped plate is connected with the corresponding fixing arm. The ends, away from the C-shaped plate, of the four fixing arms are connected with a cylinder body of the tensile viscous damper, and two scale plates are installed in the C-shaped plate in a sliding mode. The shock insulation tensile device working in the whole process of the earthquake has the advantages that the shock insulation support can be effectively prevented from being damaged due to the fact that the shock insulation support bears too large tensile force, related personnel can conveniently measure the maximum extension and retraction amplitude of the piston rod of the tensile viscous damper in the earthquake after the earthquake, detection components are flexible to install, and data recording reliability is high.

The invention discloses a capillary drainage gravel pipe pile for a collapsible aeolian sand foundation in a Sagomei district and a construction method, the capillary drainage gravel pipe pile comprises a porous pipe pile buried in sandy soil, micropores are uniformly formed in the porous pipe pile, gravel is filled outside the porous pipe pile to form a hollow gravel pile, and the hollow gravel pile is filled with water. A capillary drainage permeable pipe is arranged in the porous pipe pile; the construction method comprises the following steps that a construction area is cleaned, the vibroflot is hoisted through a crane to sink into a soil layer, then the outer-layer steel sleeve is installed outside the vibroflot and sinks into a preset depth together with the vibroflot, the porous pipe pile is installed inside the outer-layer steel sleeve, the space between the porous pipe pile and the outer-layer steel sleeve is filled with gravel, and a hollow gravel pile is formed; and meanwhile, the vibroflot is lifted, then water is injected and pumped into the porous pipe pile, the foundation is pre-settled, and finally the capillary drainage permeable pipe is installed in the porous pipe pile. The method can reduce the later settlement of the foundation, improve the construction quality, improve the bearing capacity of the foundation and enhance the anti-seismic property of the foundation.

The utility model relates to the technical field of anti-seismic inspection, and discloses a frame anti-seismic inspection bench for constructional engineering design, which comprises a base plate, an installation shell is fixedly installed at the top of the base plate, and a fluctuation assembly for carrying out seismic longitudinal wave anti-seismic inspection is arranged on the installation shell. And the fluctuation assembly comprises a fixed shaft, a movable shaft, a motor, an eccentric wheel and a fluctuation rod, the fixed shaft is fixedly installed between the opposite sides of the inner side walls of the installation shell, and the movable shaft is rotationally connected between the opposite sides of the inner side walls of the installation shell. According to the frame anti-seismic inspection bench for constructional engineering design, the fluctuation assembly is arranged, after the fluctuation assembly is used, the movable shaft drives the eccentric wheels in different directions to rotate, the fluctuation rod is driven by the eccentric wheels to swing back and forth along the axis of the fixed shaft, and due to the eccentric wheels in different directions, the fluctuation rod swings up and down differently, and crests and troughs can be formed; therefore, a form similar to a seismic longitudinal wave is formed, and the longitudinal wave anti-seismic test of the frame is realized.

The invention provides a manufacturing method of high-strength anti-seismic weather-resistant fire-resistant H-shaped steel with uniform indoor high-temperature performance, and relates to the technical field of building steel production processes. The method comprises the following steps: carrying out vacuum smelting according to set components of fireproof H-shaped steel to obtain H-shaped steel liquid, and casting to obtain an H-shaped steel blank; then first-stage multi-pass hot rolling is carried out, then the whole surface is rapidly water-cooled until the surface temperature is lower than the initial rolling temperature of first-stage hot rolling by 260-370 DEG C, a core-surface temperature difference is formed, second-stage multi-pass hot rolling is immediately carried out after water cooling, and the hot-rolled H-shaped steel is obtained; and the flanges are subjected to water mist cooling and then integrally air-cooled to the room temperature, and the high-strength anti-seismic weather-resistant fire-resistant H-shaped steel with uniform room-temperature and high-temperature performance is obtained. According to the invention, delivery is carried out in a hot rolling state, a complex heat treatment process is not needed, a wide process window is provided, different parts have excellent room high-temperature mechanical properties and corrosion resistance, and the material can be widely applied to the fields of buildings, bridges and the like which simultaneously require shock resistance, high strength and certain high-temperature resistance and weather resistance.

The invention relates to the technical field of assembly type column base nodes, in particular to a high-bearing-capacity assembly type steel structure column base node which comprises an upper bottom plate, a lower bottom plate and a buckling-restrained energy consumption plate, an upper energy consumption plate is fixed to the bottom of the upper bottom plate, and a lower energy consumption plate is fixed to the top of the lower bottom plate. Buckling-restrained energy dissipation plates which are spaced left and right are fixed between the upper energy dissipation plate and the lower energy dissipation plate, and the upper bottom plate, the upper energy dissipation plate, the lower energy dissipation plate and the lower bottom plate are fixedly installed together through at least four extension anchor bolts with the lower ends pre-embedded in a foundation. The structure is reasonable and compact, and the rigidity and the bearing capacity of the joint are regulated and controlled by changing the thickness of the middle buckling-restrained energy consumption plates and the thickness of the inner energy consumption plates, so that the high bearing capacity performance target is achieved. Under the action of an ultra-large earthquake, the extension anchor bolt on the outermost side yields firstly, then yields the buckling-restrained energy dissipation plate, and finally yields the internal energy dissipation plate, so that a multi-stage energy dissipation system in a plastic stage is formed, and the anti-seismic property of the structure is effectively improved.

The invention relates to the technical field of railway earthquake safety, in particular to a rail-bridge system earthquake resistance evaluation method, a medium and equipment. The method comprises the following steps: establishing a finite element model of a track-bridge system; carrying out nonlinear time-history analysis on the track-bridge system under different working conditions; analyzing control factors of earthquake response of the track-bridge system; establishing a mapping relation between the seismic response of the track structure and the seismic response of the main beam; calculating the earthquake response of the main beam, and evaluating the earthquake displacement response of the track structure; and the anti-seismic evaluation of the track-bridge system is realized. Through the method, the method can be used for all high-speed railway bridge types and rails at present, the anti-seismic evaluation of the rail-bridge system based on the driving performance can be indirectly and quickly realized based on the mapping relation, a large amount of time-consuming and labor-consuming train-rail-bridge system finite element simulation calculation does not need to be carried out, and the calculation efficiency is improved. The efficiency is effectively improved, the cost is reduced, the calculation is simple and convenient, and the calculation result is accurate.

The invention discloses an interface enhanced composite shear wall based on a high-ductility cement-based material. The high-ductility cement-based composite materials are formed in edge constraint areas on the two sides of the shear wall, and the common concrete is formed in a core area in the middle of the shear wall. The interface separation net is a high-strength ribbed non-dismantling formwork net and is vertically arranged at the junction of the edge constraint area and the core area, the section of the interface separation net is in a periodic concave-convex wave shape or a stepped shape, and a macroscopic mechanical meshing interface is formed. The interface seaming ribs are U-shaped ribs and are horizontally arranged at the positions of the inter-rib slurry penetrating nets of the interface separation net in a penetrating mode, one ends of the interface seaming ribs are anchored to the edge constraint area common steel bars, and the other ends of the interface seaming ribs extend into the core area and are connected with longitudinal and transverse rib cross joints of the composite material grid ribs in a hooked mode; the problems of rigidity mutation and slippage of the heterogeneous material interface are solved by utilizing the geometric occlusion effect of the interface separation net and the anchoring effect of the deep bolt pins and joints of the interface sewing ribs, cooperative work of a high-ductility material and common concrete is achieved, and good anti-seismic performance is achieved.

The invention relates to the technical field of building wallboards, in particular to a house building anti-seismic heat preservation and sound insulation wallboard which comprises a concrete wall block, a mounting opening is formed in the surface of the concrete wall block and filled with a polyurethane foam board, and edge grooves are formed in the four corners of an outer ring of the concrete wall block. When the two concrete wall blocks are spliced end to end, connecting strips are inserted into the edge grooves in the surfaces of the two concrete wall blocks; the wallboard has the beneficial effects that the wallboard is reasonable in structural design, all the components are matched with one another, and multiple functions are achieved. The push plate plays a role in multiple purposes in the wallboard splicing and mounting process, the clamping plate is pushed to clamp the veneer, the connecting strip is fixed to the two concrete wall blocks in cooperation with the long-handle screw, the structure is simplified, and the utilization rate of components is increased. By means of the reasonable structural design, the wallboard has good construction performance and decoration performance while meeting the basic performance requirements of seismic resistance, heat preservation, sound insulation and the like.

The utility model discloses a swing type self-resetting bridge pier structure provided with belleville springs, belongs to the field of bridge engineering, and solves the problems of how to improve the anti-seismic property of a bridge and ensure self-resetting and repairability of a bridge pier after an earthquake. A bridge pier base is arranged at the bottom of a bridge pier and arranged on a bearing platform, the bridge pier base and the bearing platform are connected through a swing type self-resetting device, the swing type self-resetting device comprises a steel bar and a belleville spring, the steel bar vertically penetrates through the bridge pier base and downwards extends into the bearing platform, and an anchoring end is arranged at the lower end of the steel bar. The anchoring end is located in the bearing platform, a fastening end is arranged at the upper end of the steel bar, and the belleville spring is arranged on the steel bar in a sleeving mode and located between the fastening end and the pier base. In a normal use state, the pier base after the fastening force is applied bears the bending moment of the bottom of the pier, and the pier base does not slide and does not deform at a corner; when the pier swings under the action of an earthquake, the belleville springs are stretched and compressed in a reciprocating manner, and self-resetting force is provided for the pier.

The invention discloses an anti-seismic property analysis method for a wind and rain bridge body structure. By constructing a finite element model of the wind and rain bridge, the mechanical response of the wind and rain bridge under the action of static load and seismic waves is simulated. The method specifically comprises the following steps: constructing a finite element model comprising a pier, a bridge floor, a wooden support and a rubber shock insulation layer; carrying out static analysis to obtain bearing capacity, deflection and stress distribution; carrying out dynamic analysis, including modal analysis and seismic response analysis, to determine a key response spectrum; and the arrangement scheme of the rubber shock insulation layer is optimized to improve the anti-seismic performance. According to the method, through refined finite element analysis and in combination with the rubber shock insulation technology, the anti-seismic performance of the wind and rain bridge is remarkably improved, and the historical and cultural values of the wind and rain bridge are kept to the maximum extent. The method provides a scientific basis and technical support for improving the anti-seismic property of a traditional wood structure building, and has important engineering application value and culture protection significance.

The invention provides a metal bipolar plate and a preparation method thereof, and belongs to the technical field of fuel cell bipolar plate materials.By controlling the thickness and composition of a metal sub-layer, a metal two-phase healing layer and a compact anti-corrosion three-phase ceramic layer in a self-healing coating of the metal bipolar plate, the coating has the advantages of being high in density, uniform in component, good in corrosion resistance and the like. No obvious boundary exists between layers, the anti-seismic property and the heat resistance are high, the conductivity and the corrosion resistance are high, the stability of the fuel cell is improved, and the service life of the fuel cell is prolonged; the binding force of the coating and the base material is enhanced through the metal sub-layer, so that the coating is prevented from falling off during stress deformation; according to the metal two-phase healing layer, when cracks and holes are generated in the coating, formed oxide can promote penetration crack healing of the coating, reduce the porosity of the coating, promote crack healing and prevent cracking, Al is introduced into the metal two-phase healing layer, the binding force of the metal two-phase healing layer and the compact corrosion-resistant three-phase ceramic layer is improved, and the corrosion resistance of the coating is improved. And the coating is prevented from falling off or cracking.

The invention relates to the technical field of pipeline seismic resistance, in particular to a flexible anti-seismic protective pipe supporting structure of a municipal engineering concrete pipeline and a using method thereof.The flexible anti-seismic protective pipe supporting structure comprises two opposite arc-shaped clamps, two flexible supporting rods arranged on the faces, away from each other, of the two arc-shaped clamps and supporting bases arranged at the bottom ends of the flexible supporting rods; a universal joint used for being connected with the arc-shaped clamp is arranged at the top end of the flexible supporting rod, a connecting rod fixedly connected with the arc-shaped clamp extends out of the spherical surface of the universal joint, and the flexible supporting rod is fixedly installed on the supporting base in an inclined mode. The arc-shaped clamp supports the small concrete pipeline through the universal joint and the flexible supporting rod, so that the small concrete pipeline is kept at the original position, the small concrete pipeline is prevented from deviating, and the technical problem that in the prior art, vibration causes the position of the small concrete pipeline to deviate, and normal use of a pipeline system is affected is solved. And the stability of the small concrete pipeline is improved.