524 results about "Seismic resistance" patented technology

The invention discloses a cross-activity fracture tunnel full life cycle service state dynamic analysis method and system, relates to the technical field of numerical simulation, and solves the technical problems that the dynamic change of data in a tunnel full life cycle cannot be reflected and the service state analysis is inaccurate in the prior art. The method comprises the following steps: in a design period, establishing a tunnel-surrounding rock-fault three-dimensional refined model considering an internal structure of a fault and creep / stick-slip fault deformation characteristics, inputting collected initial parameters into a model database for numerical simulation, and carrying out preliminary design of seismic resistance and error resistance of the structure on the basis of a numerical simulation result; during the construction period, updating the database, inputting the model for re-simulation, changing the anti-seismic and anti-error design of the structure based on a new numerical simulation result, and preliminarily evaluating the service state of the tunnel; and in an operation period, predicting a dynamic data development trend by using the prediction model, inputting the dynamic data development trend into the numerical model for numerical simulation, and correcting a tunnel service state evaluation and emergency processing scheme according to a numerical simulation result.

The invention discloses a circular wooden column-hole-hidden graphite hardwood-graphite layer-along-column foundation stone seismic isolation system which is mainly used for seismic isolation and self-resetting of the bottom of a wooden structure circular wooden column. The shock insulation system is composed of a round wooden column, hole-hidden graphite hardwood, concave spherical surface belt limiting edge column foundation stone, a graphite layer and an annular tempered glass sealing plate. The hole-hidden graphite hardwood is composed of a convex spherical section, a thick cylindrical section, a graphite-hidden hole and a thin cylindrical connecting key which are integrally processed, and the thin cylindrical connecting key is inserted into the round hole in the bottom of the round wooden column to achieve positioning butt joint. The graphite layer can reduce the friction force between the convex spherical surface of the hole-hidden graphite hardwood and the concave spherical surface of the column foundation stone. The concave spherical surface of the column foundation stone enables the round wooden column to reset automatically after an earthquake, and the limiting edge of the column foundation stone can limit excessive displacement of the bottom of the round wooden column in the vibration process. And the annular toughened glass sealing plate can be sealed and waterproof. The seismic isolation system has the advantages of reducing the seismic action of an upper structure through bottom seismic isolation of the circular wooden columns and achieving structural toughness seismic resistance through self-resetting after an earthquake.

The invention relates to the technical field of anti-seismic performance detection, in particular to an anti-seismic performance detection method and system for an assembled steel-wood composite structure, and the method comprises the steps: arranging a multidirectional acoustic emission sensor in a steel-wood structure node area, applying simulated seismic vibration, and synchronously collecting acoustic emission signals; the method comprises the following steps: preprocessing collected acoustic emission signals, dividing the acoustic emission signals into signals corresponding to microcracks and contact slippage, respectively calculating an energy attenuation rate and a phase offset, and constructing a matrix; micro-impact is applied to the steel-wood node through an electromagnetic excitation device, a response signal is collected, resonant frequency is extracted, the drift distance between the resonant frequency and a reference value is calculated, and the severity of interface damage is determined according to the value of the drift distance; the damage correlation index calculation takes the characteristic value of the interface wave propagation characteristic matrix and the resonance frequency drift distance as input, the damage correlation index is calculated through the correlation coefficient, and the damage grade is divided according to the correlation coefficient. And differential characterization of different damage types is realized through the interface wave propagation characteristic matrix.

The invention relates to the related technical field of anti-seismic performance detection devices, in particular to a novel anti-seismic performance detection device for a prestressed tenon-and-mortise combined framework, which comprises a bottom plate, a bracket is mounted above the bottom plate, a vibration mechanism is arranged in the middle of the upper part of the bottom plate, and a mounting groove is formed in the surface of the vibration mechanism. A mounting groove is formed in the bottom plate, a frame is mounted in the mounting groove, a mounting sleeve sleeves the surface of the frame, a pressure detection mechanism is arranged above the support, and a buffer mechanism is arranged at the bottom of the bottom plate. According to the novel anti-seismic performance detection device for the prestressed tenon-and-mortise combined frame, multi-direction vibration loading can be achieved through the arrangement of the vibration mechanism, meanwhile, vibration stability is guaranteed through spring buffering and limiting guiding, a vibration environment better fitting an actual earthquake scene is provided for the frame, the accuracy of detection data is improved, and the detection efficiency is improved. And through the arrangement of the buffer mechanism, violent resonance between the equipment and the ground is avoided, and the accuracy of vibration response data acquisition is guaranteed.

The invention discloses an intelligent anti-seismic structure optimization design method and system for a high-rise building, and relates to the technical field of anti-seismic design of the high-rise building. A working condition database considering multidirectional seismic oscillation and soil-structure interaction is established in combination with seismic oscillation time history and site investigation parameters; constructing a structure model on the BIM platform, and importing frequency characteristics and load to generate a preliminary design; an inter-story displacement angle, a story acceleration, a plastic rotation angle and an energy dissipation ratio index are set in the model, an anti-seismic performance comprehensive function is constructed, constraints are set according to a standard limit value, the structure model is converted into an optimizable problem, and optimal design is achieved by iteratively calling a working condition database and automatically correcting key component parameters and damping arrangement. According to the method disclosed by the invention, the structural optimization design of the high-rise building under the multidirectional earthquake action is realized by establishing an earthquake working condition database and parameterizing structural modeling and performance function constraint.

The utility model relates to an enlarged type metal composite viscoelastic damper. The bottom of a metal damper is fixedly connected with an enlarged type viscoelastic damper. The metal damper comprises a T-shaped core plate, L-shaped restraining plates are fixedly connected to the two opposite sides of the T-shaped core plate in the vertical direction, friction areas are arranged between the tops, located on the vertical plane, of the L-shaped restraining plates and the T-shaped core plate, fixing areas are arranged between the bottoms of the L-shaped restraining plates and the T-shaped core plate, and energy dissipation webs are arranged on the portions, between the fixing areas and the friction areas, of the T-shaped core plate. The amplified viscoelastic damper comprises an upper connecting plate, an amplifying lever is hinged to the lower portion of the upper connecting plate, an inner steel plate is hinged to the lower portion of the amplifying lever, the inner steel plate is connected with an outer steel plate through a viscoelastic layer, and the outer steel plate is hinged to the amplifying lever through a fulcrum shaft. The defects of a metal damper can be overcome under small earthquakes, good energy consumption is achieved, the amplifying damper can be protected against excessive displacement and failure under large earthquakes, the damper consumes energy in a multi-stage mode, and the anti-seismic performance of the structure is improved. The components are connected through bolts, are highly assembled and are convenient to replace.

The invention discloses a self-resetting multi-section prefabricated assembled pier and a construction method, the self-resetting multi-section prefabricated assembled pier comprises a prefabricated cover beam, a pier column and a pier bearing platform, the pier column is formed by splicing a plurality of prefabricated sections, and is connected with the prefabricated cover beam through the prefabricated section located at the top; the prefabricated bent cap is connected with the pier bearing platform through a prefabricated section located at the bottom in a bell and spigot joint mode, and the non-adhesive prestressed tendons are connected with the prefabricated bent cap and the pier bearing platform and provide self-resetting capacity for the pier. According to the multi-section prefabricated assembled pier with the self-resetting capacity and the construction method, the formworks are prefabricated in a unified mode in a factory, the efficiency is improved while the prefabrication and construction cost is reduced, the mode of prefabricated section splicing and shallow socket connection is adopted, construction in narrow and complex terrains is facilitated, prestressed tendons used for self-resetting are arranged, and the construction efficiency is improved. The overall anti-seismic performance is improved, the integrity, rigidity and bearing capacity of the assembled pier are improved, the service life is prolonged, and meanwhile the maintenance cost is reduced.

The invention belongs to the technical field of geotechnical engineering disaster prevention and reduction and earthquake engineering tests, and relates to a vibration table test method considering time-varying deterioration of anti-seismic performance of an anchored rock slope. The method comprises the following steps: firstly, constructing a dynamic performance time-varying deterioration model based on an anchoring system interface bonding force and a free section steel bar yield resistance attenuation rule; physical equivalent simulation of interface degradation and component yield resistance reduction is realized by regulating and controlling the proportion of rock mass similar materials and utilizing a graded rigidity anchoring system. The core of the method is that before a vibration table applies seismic waves, attenuation of the anchoring performance of a supporting structure is actively simulated in advance, so that a real evolution path that the bearing capacity of an anchoring system is reduced firstly, slope stress redistribution and accumulated damage are caused, and then sudden seismic loads are suffered is reproduced; the limitation that only the static low bearing capacity is simply simulated in a traditional test is broken through. According to the method, space-time coupling of static time-varying degradation accumulation and transient earthquake dynamic action is effectively achieved, the problems of interface degradation simulation distortion and the like are solved, and a reliable test method is provided for dynamic stability evaluation and reinforcement design of a long-term service anchoring slope.

The invention discloses an anti-seismic property analysis method for a complex high-rise structure. The method comprises the following steps: determining a boundary range of a super high-rise building; the anti-seismic requirement of the over-limit high-rise building is determined, the height limit is determined based on different structural forms, and it is ensured that at least one aspect of the height, the height-width ratio and the body regularity of the house meets specifications and regulations; step 3, structural finite element modeling: based on the general situation of the constructional engineering, simplifying a finite element model to enable the finite element model to be consistent with an actual structure, and establishing the finite element model; 4, analyzing dynamic characteristics of the structure, wherein the inherent dynamic performance of the structure is reflected by the similar characteristics of the structure; and step 5, structural seismic response spectrum applying: applying the seismic response spectrum to the whole structure to research the maximum response of the structure under the seismic load effect of fortification intensity. According to the anti-seismic performance analysis method for the complex high-rise structure, multiple key aspects of super high-rise building boundary range determination, clear anti-seismic design requirements, structural finite element modeling, dynamic characteristic analysis, seismic response spectrum analysis and the like are comprehensively covered, and a set of systematic and complete analysis process is formed; and the anti-seismic performance of the complex high-rise structure can be deeply and carefully analyzed.

The invention provides an assembly type multistage energy consumption self-resetting energy dissipation support. The assembly type multistage energy consumption self-resetting energy dissipation support comprises a negative Poisson's ratio component plate, a transmission device and a self-resetting disc spring device, wherein the transmission device and the self-resetting disc spring device are symmetrically arranged on the two sides of the negative Poisson's ratio component plate; each transmission device comprises a Y-shaped piece and a fixing plate assembly, each Y-shaped piece is provided with a second transmission rod and two third transmission rods, a first-stage energy consumption device is connected between the two third transmission rods, and the two third transmission rods of the two Y-shaped pieces are connected through negative poisson ratio component plates; secondary energy consumption devices are respectively arranged between the connected third transmission rods; each self-resetting disc spring device comprises a first transmission rod, a belleville spring and two disc spring baffles, according to the self-resetting energy dissipation support, a first-stage energy dissipation area is formed by the Y-shaped piece and the first-stage energy dissipation device, a second-stage energy dissipation area is formed by the negative poisson ratio component plate and the second-stage energy dissipation device, self-resetting energy storage is provided by the belleville springs, and the self-resetting energy dissipation support can be used for energy dissipation. Therefore, multi-stage energy consumption and self-resetting are achieved, and excellent anti-seismic performance is achieved.

The invention provides a building design method and system based on multi-objective optimization. Wherein the anti-seismic property and the material stress dissipation efficiency of the building are improved through multi-objective optimization. The method comprises the following steps: firstly, collecting building structure parameters, such as cycle ratio, inter-story displacement angle, axial compression ratio, dynamic load simulation data and material stress wave propagation data; based on the data, a dynamic coupling factor between the structure parameter and the dynamic load is generated, and the matching relation between the axial compression ratio and the stress wave peak value propagation rate is adjusted. And carrying out collaborative optimization on the parameters by adopting a non-dominated sorting strategy to obtain an initial structure parameter combination. And finally, performing iterative correction by taking the dynamic load simulation data as a constraint condition, and generating a structure parameter combination meeting the requirements of seismic redundancy and stress dissipation balance. According to the technical scheme, the safety and stability of building design can be improved.

The invention relates to a deep learning-based structure anti-seismic performance evaluation system, which comprises a data acquisition module, a data preprocessing module, a feature extraction module, a numerical simulation module, a deep learning model training module, an evaluation and verification module, a visualization module and a model updating and maintenance module, the data preprocessing module is used for data preprocessing, the feature extraction module is used for data feature extraction, the numerical simulation module is used for simulating seismic response of a structure, the deep learning model training module is used for constructing a deep learning model, the evaluation and verification module is used for model evaluation and verification, and the visualization module is used for evaluation result display. And the model updating and maintaining module is used for updating and maintaining the model. According to the invention, an improved seismic data feature fusion extraction algorithm is proposed for feature extraction, an improved seismic perception depth state space network is proposed for model construction, and a better scheme is provided for a deep learning-based structure seismic performance evaluation system.

The invention is suitable for the technical field of seismic analysis, and provides a cross-fault tunnel fault movement-seismic oscillation decoupling analysis method and device and a terminal. The method comprises the following steps: establishing a finite element model of a cross-fault tunnel-surrounding rock; based on the dual-objective optimization function of the seismic wave, determining the separation frequency of a fault movement component and a seismic oscillation component in the current seismic wave, and obtaining fault movement component data and seismic oscillation component data from the seismic wave in the simulation area; the fault movement component data and the seismic movement component data are converted into equivalent seismic loads; and applying the equivalent seismic load to the finite element model for finite element calculation, and determining the seismic response rule of the tunnel lining under the action of the seismic motion field and the fault displacement field. According to the method, the optimal separation frequency of the seismic oscillation component and the fault movement component is determined by using the dual-objective optimization function, so that the influence of different seismic wave components on the tunnel structure is researched, and a reference basis is provided for adopting targeted anti-seismic measures for tunnel seismic resistance.

The utility model provides a prefabricated assembly type notch plate connecting joint based on a concrete modular integrated building. The prefabricated assembly type notch plate connecting joint comprises a first prefabricated floor slab and a second prefabricated floor slab which are both provided with notches. A transverse main reinforcement of the first prefabricated floor extends out of the left side face towards the left end to form a first connection reinforcement. The stirrups at the notches form connection reinforcing steel bars II; the cross section of the prefabricated floor slab II is L-shaped; the right end of a transverse main reinforcement of the second prefabricated floor extends out of the right side face to form a third connection reinforcement, and a reserved L-shaped notch is formed in the splicing position of the first prefabricated floor and the second prefabricated floor; and through post-pouring of the L-shaped notches, mutual consolidation of the first prefabricated floor slab and the second prefabricated floor slab is achieved, so that the structure has good integrity and anti-seismic performance. According to the MIC box body structure, the L-shaped notches are reserved between the prefabricated floor slabs of the box body, and the connecting steel bars are in lap joint at the notches, so that reliable connection is formed between the two prefabricated floor slabs and the MIC box body through post-pouring concrete at the notches, and the structure has good integrity and excellent anti-seismic performance.

A method for seismic fragility analysis of a shield tunnel considering surface surcharge effects includes the steps of: determining mechanical property parameters of tunnel materials and physical-mechanical parameters of soil layers; investigating case studies of surface surcharge to define surface surcharge scenarios; selecting seismic waves and performing one-dimensional equivalent linear site response analysis on soil conditions; establishing a dynamic finite element numerical model of a soil-tunnel system considering surface surcharge; defining ground motion intensity measures (IM), tunnel damage measures (DM), and damage states (DS); and establishing probabilistic seismic demand models for the tunnel under various surface surcharge effects. Based on key parameters, seismic fragility curves for tunnel structures under surface surcharge effects are established. Through a nonlinear incremental dynamic analysis method, this method establishes the finite element numerical model of the soil-tunnel system, allowing for quantitative assessment of tunnel seismic fragility and seismic performance under various surface surcharge effects.

The invention relates to the technical field of earthquake damage prediction, in particular to a mountain fallen layer structure earthquake damage prediction method based on machine learning, and the method comprises the steps: building a numerical model database of a mountain fallen layer structure; applying seismic oscillation excitation of different levels to each structure model in the numerical model database, and obtaining corresponding anti-seismic performance indexes through nonlinear time-history analysis; analyzing an influence rule of the structural design parameters on the anti-seismic performance based on the anti-seismic performance indexes; by taking the structural design parameters and the seismic oscillation parameters as input features and the seismic performance indexes as output features, constructing a mountain fallen layer structure seismic damage prediction model by adopting a machine learning algorithm; performing training optimization on the earthquake damage prediction model; and inputting structural design parameters and seismic oscillation parameters of a to-be-predicted structure into the optimized seismic damage prediction model, and outputting a corresponding seismic damage response prediction result. And the earthquake damage prediction efficiency and accuracy of the mountain building structure are improved.

The invention relates to the technical field of civil engineering, in particular to a method for calculating the seismic response of a pile group under the action of seismic P waves, a pile-soil coupling model is established based on a continuous elastic dynamics theory, and pile-pile dynamic interaction factors are calculated by decoupling displacement of a free field and a scattered field of a soil body and combining coordinate transformation, so that the seismic response of the pile group is calculated. The displacement response of a pile group system is solved according to the superposition principle, the influence of pile spacing and soil mass parameters on the anti-seismic performance of the pile group is quantitatively evaluated by adopting a method of combining frequency domain amplitude-frequency characteristics and time domain PGA attenuation analysis, and theoretical support is provided for pile foundation optimization design.

The invention discloses a fabricated building supporting seat for constructional engineering, and relates to the technical field of constructional engineering. The device comprises a lower support, a supporting column is arranged in the lower support, a spherical groove is formed in the top of the supporting column, a spherical plate is rotatably mounted in the spherical groove, an upper support is mounted at the top of the supporting column, and main spring steel plates are fixedly mounted on the periphery of the supporting column; the end, close to the interior of the lower support, of the strength adjusting bolt is provided with a limiting part and an anti-disengaging part. The auxiliary spring steel plates are arranged at the four corners of the lower support, the main spring steel plates abut against the auxiliary spring steel plates, the double-damping design is adopted, the auxiliary spring steel plates can provide additional elastic support, when the main spring steel plates are subjected to large external force or vibration, the abutting effect of the auxiliary spring steel plates can effectively share part of stress, and the damping effect is good. And the shock resistance of the support is improved, so that the influence of vibration transmitted to the structure is effectively reduced.

This invention relates to the field of pipeline seismic resistance technology, specifically a pipeline seismic support system, comprising C-shaped steel, with round steel clamps inserted into the surface of the C-shaped steel, a fixing bolt screwed to one end of the round steel clamp, and the pipeline passing through the round steel clamp. A flat steel clamp is fitted onto the outer circumference of the pipeline, and an auxiliary limiting component is slidably connected to the surface of the fixing bolt, limiting the fixing bolt. The beneficial effect is that after the round steel clamp is fixed by the fixing bolt, when rotating the fixing bolt, the rotating plate can be removed from the limiting slot by hand, and one end of the limiting rod can be held to rotate the fixing bolt, making the rotation of the fixing bolt more effortless.

This invention discloses a high-vibration-resistant high-voltage surge arrester, specifically relating to the field of surge arrester technology. It includes a surge arrester body, a buffer assembly, and an adjustment assembly. Through the buffer assembly, this invention can release the blockage of the vent hole when the surge arrester body experiences severe, large-amplitude vibrations. It can adjust the buffer rigidity, allowing the first piston to continue moving downwards for buffering, thus improving the buffering effect. Furthermore, as the first piston moves to the bottom of the first chamber, it gradually blocks the connecting hole, acting as a throttling device, gradually reducing the oil output within the connecting hole. This further slows the descent speed of the first piston, thus providing multi-stage buffering. This prevents buffer failure and impacts under large-amplitude vibrations, further improving the buffering effect and extending the service life of the surge arrester.

The invention belongs to the technical field of net mold frames for hollow internal mold metal net cement partition walls, and discloses a net mold frame for a hollow internal mold metal net cement partition wall and a method for building the hollow internal mold metal net cement partition wall. The main technical characteristics are as follows: two opposite wave-shaped meshes are included, wave troughs of the two meshes are attached together, wave crests of the two meshes are opposite, a cavity is formed between the wave crests of the two meshes, vertical keels are arranged in the cavity, the vertical keels are bound and fixed with the meshes, and the vertical keels are arranged in the cavity. Vertical supporting frames are arranged at the wave trough positions of the two meshes, and the vertical supporting frames are fixed to the meshes. The upper embedded steel bars and the lower embedded steel bars are connected together through the vertical supporting frames, the vertical supporting frames are arranged at intervals, and the anti-collision performance and the anti-seismic performance of the wall are greatly improved.

The present invention relates to an open joint metal panel, a method of manufacturing the same, and an open joint exterior wall structure having seismic resistance, leakage and fire spread prevention functions. More specifically, the invention provides a double leakage blocking structure that includes a joint gasket and a watertight gasket, and a double leakage blocking structure that blocks some rainwater entering the interior of the open joint metal panel from entering the construction wall surface through the leakage blocking protrusion of the bracket and the anchor in the drainage guide and fire spread prevention panel, and allows water collected through the drainage guide and fire spread prevention panel to be discharged to the outside through the open joint metal panel and the drainage frame, thereby maximizing leakage performance. The invention relates to an open joint metal panel, a method of manufacturing the same, and an open joint exterior wall structure having seismic resistance, leakage and fire spread prevention functions. An open joint metal panel according to the present invention is characterized by comprising: a panel member having a side portion bent at each side and a panel fixing portion bent outwardly at the end of the side portion; a gasket fixing flange frame fixedly installed on the inner circumference of each side portion; and a watertight gasket fitted and coupled to the gasket fixing flange frame.

The invention provides a design method of a replaceable anti-falling beam device for improving transverse anti-seismic performance of a bridge, and relates to the technical field of design of anti-falling beam devices.The method comprises the specific steps that parameters of the bridge without an anti-falling beam and regional historical seismic parameters are collected; different earthquake scenes are simulated, and pier bottom reference anti-seismic performance indexes are output when no anti-falling beam exists; a group of anti-falling beam parameter combination is randomly set, a coupling model is constructed, an earthquake scene in the same S2 is simulated, and an anti-seismic performance index in the presence of an anti-falling beam is output; s5, calculating a performance comprehensive difference value by taking the reference index as a reference, calculating a comprehensive matching degree after the performance comprehensive difference value exceeds a performance threshold value, and entering S5 when the comprehensive matching degree exceeds a matching degree threshold value; and taking the selected parameters as initial solutions, and carrying out iterative optimization by using a simulated annealing algorithm to obtain an optimal combination. Through double-model linkage, a double-screening mechanism and algorithm optimization, the problems that in the prior art, adaptation verification is missing, and a device is prone to failure are solved, the anti-beam-falling protection effect is quantified, and the transverse anti-seismic reliability of a bridge is improved.

The application relates to the technical field of high-strength anti-seismic disc screw, in particular to a high-efficiency low-cost 600MPa-grade high-strength anti-seismic disc screw and a production process thereof, and the chemical composition and mass percentage of the high-strength anti-seismic disc screw are as follows: C: 0.23-0.28%, Si: 0.65-0.8%, Mn: 1.4-1.6%, S: less than or equal to 0.04%, P: less than or equal to 0.04%, V: 0.1-0.12%, Cr: 0.1-0.2%, N: 0.018-0.023%, and the balance is Fe and inevitable impurities. The design concept of optimal cost and quality is adopted, and a suitable production process is combined, so that the low-cost advantages of carbon, silicon, nitrogen and other elements are fully utilized, the content of vanadium elements is reduced, the 600MPa-grade disc screw product with high strength, high plasticity and excellent anti-seismic performance is produced, and the requirements of large key projects on the comprehensive performance and safety performance of steel bars are met.

This invention discloses a time and frequency management unit for a spacecraft, comprising a power conversion module, a clock source module, a baseband output module, and a baseband control and processing module stacked along a first direction. Each module includes a housing; all housings are of uniform size; the housings of adjacent modules are connected by an interlocking locking structure. The time and frequency management unit also includes multiple through-hole screws extending along the first direction and penetrating all modules, which, together with the locking structure, fix the modules into a single unit. This invention significantly improves spatial integration and facilitates the disassembly and maintenance of individual modules; the locking structure blocks electromagnetic wave leakage and interference; the through-hole screws form a rigid, unified whole, meeting extremely high seismic resistance requirements.

A large power equipment assembled ground installation platform system, including energy dissipation and shock absorption equipment platform system and support reinforcement system; the energy dissipation and shock absorption equipment platform system includes assembled fireproof equipment platform plate, fireproof equipment platform beam and fireproof equipment platform column and fixing mechanism and energy dissipation and shock absorption mechanism, the fixing mechanism includes reinforcing plate arranged between the fireproof equipment platform beam and the fireproof equipment platform column, first tensioning connecting piece arranged between the fireproof equipment platform columns and second tensioning connecting piece arranged between the fireproof equipment platform column and the support reinforcement system; the energy dissipation and shock absorption mechanism includes damping device arranged between the fireproof equipment platform columns.The present application has good seismic performance and fireproof performance, can guarantee the safety of equipment, and has various advantages of assembly type.

The application relates to the technical field of building engineering, in particular to a prefabricated external ECC jacket combined column, which comprises a column body and a prefabricated ECC jacket mechanism, and the prefabricated ECC jacket mechanism is located in the plastic hinge area of the column body; the prefabricated ECC jacket mechanism comprises multiple jacket single pieces and multiple connecting assemblies, the multiple jacket single pieces are fixed to the outer periphery of the column body in a spaced jacket mode, and the connecting assembly is connected between two adjacent jacket single pieces; the connecting assembly comprises a connecting frame body, a damping piece and a detection piece, the damping piece and the detection piece are installed in the connecting frame body, and the jacket single piece is inserted into the connecting frame body from both ends and fixed therein. The prefabricated ECC jacket and the connecting assembly are cooperated to significantly improve the stress and strain level of the concrete in the column body, and the anti-seismic performance is greatly enhanced, the problem that the traditional reinforcing mode is prone to through cracks is fundamentally solved, and the constraint effect of the jacket structure is ensured to be continuously exerted.

The invention discloses a refrigerating system refrigerant pipe and a manufacturing method thereof. The refrigerating system refrigerant pipe comprises a corrugated pipe and connecting pipes connected to the outer walls of the two ends of the corrugated pipe in a sleeving mode. The corrugated pipe comprises a first threaded section and a second threaded section; the connecting pipe comprises a first threaded pipe in threaded fit with the first threaded section and a second threaded pipe in threaded fit with the second threaded section. The first thread section and the second thread section are opposite in thread turning direction; the first threaded pipe and the second threaded pipe are split and then welded to form a first welding part, and the second threaded pipe and the outer wall of the corrugated pipe are welded to form a second welding part; the first threaded section and the second threaded section are coated with a brazing filler metal ring; the threaded section is melted through the brazing filler metal ring and then brazed with the threaded pipe to achieve sealed connection of the corrugated pipe and the connecting pipe, and the first threaded section and the second threaded section which are opposite in thread rotation direction are in threaded connection with the connecting pipe to improve the anti-seismic performance.

The utility model provides a water conservancy project building anti-seepage quality monitoring device, and belongs to the technical field of monitoring. Comprising a cylinder, a mounting assembly is mounted on the inner wall of the cylinder, and the mounting assembly is used for mounting a monitoring sensor; the mounting assembly comprises a sliding part, the sliding part is slidably arranged on the inner wall of the cylinder, a sliding groove is formed in the sliding part, a spring is fixedly arranged on the inner wall of the cylinder, a sliding block is slidably arranged on the inner wall of the sliding groove, one end of the spring is fixed to the sliding block, and a clamping part is fixedly arranged on one side of the sliding block; a plurality of clamping blocks are fixedly arranged on the opposite sides of the clamping pieces. Through the arrangement of the installation assembly and the cooperation of a spring, a sliding block and an elastic clamping piece, the rapid installation of the monitoring sensor is realized, the dual effects of mechanical clamping and negative pressure adsorption ensure that the sensor is stably connected and has strong anti-seismic performance, and the sensor looseness or data error caused by the vibration of a hydraulic engineering environment is avoided.

The embodiment of the present application provides a bending shear type eccentrically braced energy dissipation beam and an eccentrically braced member, the bending shear type eccentrically braced energy dissipation beam comprises a first beam segment, a second beam segment and a third beam segment sequentially connected along a first direction, when shear plastic deformation strengthening of an energy dissipation beam web of the second beam segment and a shear shear force internal force reach mu times of full plastic shear bearing capacity, the first beam segment and the third beam segment reach full plastic bending bearing capacity; or when plastic deformation strengthening of an energy dissipation beam first flange and an energy dissipation beam second flange of the first beam segment and the third beam segment and an energy dissipation beam first flange and an energy dissipation beam second flange of the third beam segment and a bending bending moment internal force reach mu times of full plastic bending bearing capacity, the energy dissipation beam web of the second beam segment reaches full plastic shear bearing capacity; wherein mu is a constant with a value range of 1.1-1.25. The bending shear type eccentrically braced energy dissipation beam of the embodiment of the present application has better seismic performance.