116 results about "Seismic loading" patented technology

The invention provides a rock-soil body dynamic failure simulation method based on energy dissipation hot spots. The rock-soil body dynamic failure simulation method comprises the steps that a near-field dynamics and discrete element coupling model used for describing the mechanical state of particles under the earthquake action is constructed; calculating particle stress information; calculating the particle speed and displacement according to the particle stress information, and analyzing the damage process according to the energy dissipation hot spots to obtain a calculation result; and outputting a calculation result and drawing a cloud picture. According to the method, a near-field dynamics and discrete element coupling model is constructed for the slope instability phenomenon under the earthquake action and is applied to discrete element software, and a method for describing deformation and damage characteristics of a slope under earthquake disturbance is formed; according to the rock-soil body dynamic failure simulation method based on the energy dissipation hot spots, the shape and characteristics of the sliding surface are analyzed, the slope instability process under the earthquake load is reflected, the prediction precision and the sliding surface recognition accuracy are improved, and the rock-soil body dynamic failure simulation method has remarkable advantages in prediction of rock-soil body progressive failure and sudden landslide.

The invention relates to the technical field of building structure reinforcement, and discloses a calculation method for increasing photovoltaic reinforcement on the roof of an existing building, which comprises the following steps of: constructing a load distribution model containing a vertical load layer (self weight of a photovoltaic module and accumulated snow load) and a horizontal load layer (wind load and earthquake load), and cooperatively transmitting the load through a node support system and an anchoring connecting piece; generating a roof reinforcement analysis model containing a supporting node model and a connecting component model; generating a reinforcement assembly sequence according to the photovoltaic system installation position distribution information and the reinforcement analysis model; generating a load distribution scheme based on the component sequence; and the distribution scheme and the reinforcement analysis model are combined, and the supporting node arrangement density and the connecting component material specification are determined through multi-objective optimization. According to the method, multi-load and structure aging are comprehensively considered, multi-target optimization is achieved, the safety and economical efficiency of the reinforcement scheme are improved, and the method is suitable for photovoltaic reinforcement calculation of the existing building roof.

The invention discloses an integrated fan pneumatic-hydrodynamic-servo-elastic-plastic coupling analysis system and method, and belongs to the technical field of offshore fan numerical simulation calculation. According to the method, a coupling model of an offshore wind turbine under the environment load effect is established, a rotor cabin assembly is simulated through a multi-body dynamics method, and interaction of a supporting structure and pile soil is simulated through a finite element method. By introducing a prediction correction loose coupling algorithm, joint simulation between a multi-body system and a finite element system is realized. The method is not only suitable for coupling dynamic response analysis of the offshore wind turbine under the action of conventional wind wave load, but also suitable for elastic-plastic coupling analysis of the offshore wind turbine under the action of extreme typhoon load or earthquake load. In addition, the method not only can be used for coupling analysis of the offshore wind turbine of a traditional steel supporting structure, but also is suitable for integrated coupling analysis of the wind turbine of a novel steel-concrete structure on land or on the sea.

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 a method for simulating a complex earthquake load in a triaxial test, and belongs to the field of geotechnical engineering indoor test methods. The invention mainly overcomes the defects in the prior art, and provides a simulation method for complex earthquake load in a triaxial test, which comprises the following steps: acquiring a near-field strong earthquake record, and carrying out baseline correction and filtering processing on the near-field strong earthquake record; decomposing and synthesizing the near-field strong earthquake record; performing time-history conversion on the near-field strong earthquake record, and determining experimental parameters; preparing a soil-rock mixture sample, and saturating the sample; performing an indoor triaxial test on the saturated sample according to the determined experimental parameters; calculating the correlation between the input waveform and the output waveform according to the test result; and analyzing typical dynamic characteristics of the soil-rock aggregate under the action of the near-field strong earthquake according to a test result. The invention provides a method for analyzing test data under the action of earthquake load, and provides an indoor triaxial test method for carrying out research on dynamic characteristics of a rock-soil body by near-field strong shock of an active fault zone.

The invention relates to a shape memory alloy plate buckling restrained brace with friction energy dissipation and a using method. The buckling restrained brace comprises a core plate, stiffening plates arranged at the two ends of the core plate, buckling restrained cover plates arranged on the upper side and the lower side of the core plate, angle steel used for connecting the stiffening plates and the buckling restrained cover plates, and filling plates arranged between the core plate and the buckling restrained cover plates. The core plate is an iron-based shape memory alloy plate and can recover deformation caused by earthquake load under local heating; long slotted holes are formed in the stiffening plates, the buckling constraint cover plates and the angle steel, the stiffening plates and the angle steel are connected through bolt assemblies, the buckling constraint cover plates and the angle steel are connected through bolt assemblies, the filling plates and the buckling constraint cover plates on the two sides are connected through bolt assemblies, and energy is consumed between the bolt assemblies and the long slotted holes through friction. Compared with the prior art, the buckling restrained brace can be used as a lateral force resistance and energy consumption component of a steel frame structure, and has the advantages of being easy to reset, high in energy consumption, easy to assemble and disassemble and the like.

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 belongs to the technical field related to tunnel anti-seismic analysis, and discloses a green function analytical method and equipment for rayleigh wave dynamic coupling response of an interval tunnel in an inclined field. The method comprises the steps that S1, soil deformation and displacement in the x direction and the y direction caused by Rayleigh wave propagation are converted into tunnel equivalent seismic loads in the x direction and the y direction through a viscoelastic geobasic structure model; s2, a Timoshenko beam model on a viscoelastic Pasternak foundation is adopted to establish a partial differential equation set for controlling axial and transverse dynamic displacement responses of longitudinal discrete units of the interval tunnel; s3, deducing four Green functions representing the bidirectional dynamic coupling response of the tunnel in combination with a Green function method and an artificial spring boundary; and S4, performing integral operation on the Green function by using a superposition principle, and introducing an exponential function term containing time t to obtain axial displacement and transverse displacement of the tunnel and corresponding axial and transverse dynamic coupling response coefficients. According to the invention, the solving efficiency is improved.

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 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 application relates to an anti-seismic building pile foundation, and relates to the technical field of building pile foundations. The anti-seismic building pile foundation comprises a base body, the outer side of the base body is provided with a plurality of main support columns, a plurality of grooves are formed in the outer side surface of the base body and are fixedly connected with first fixing shells, one end of each main support column is fixedly connected with a first fixing block, the first fixing blocks are arranged in the first fixing shells respectively, and a secondary support column is arranged on the side surface of each main support column. Compared with a traditional single columnar pile foundation, the anti-seismic building pile foundation can disperse seismic loads in multiple directions, can transmit transverse seismic forces to a wider soil area through multiple levels of support, and can solve the problems that the anti-seismic building pile foundation with a single columnar structure has limited horizontal shear resistance, is prone to pile body fracture and inclination under the action of strong seismic loads, and the problems are more prominent, especially in soft soil foundations or high-intensity seismic areas.

The invention relates to an offshore wind turbine large-diameter single pile foundation similarity test method for a centrifugal machine platform. The method is suitable for the technical field of offshore wind turbine single-pile model test design under geological engineering sea area earthquake load. The technical problem to be solved by the invention is to provide the similar test method for the large-diameter single pile foundation of the offshore wind turbine for the centrifugal machine platform. According to the technical scheme, the similar test method for the large-diameter single pile foundation of the offshore wind turbine for the centrifugal machine platform is characterized by comprising the following steps: determining a model between a prototype structure in a prototype field and a primary scaling model in a 1g field; the similarity criterion obeyed by each test parameter between the primary scaling model and the secondary scaling model in the centrifugal field is determined; and determining the similarity ratio of each test parameter between the prototype field and the centrifugal field based on the similarity criterion followed by each test parameter after two times of scaling.

This invention discloses a shock-absorbing and pressure-reducing permeable concrete pile reinforced with recycled tires and its construction process. The pile structure comprises a pile body formed by vertically connecting several precast permeable concrete columns; compressible rubber blocks containing permeable holes and ball joints are fixed between adjacent permeable concrete columns; a layer of non-woven fabric is wrapped around the permeable concrete pile to prevent soil from clogging the concrete holes; and a ring-shaped mesh skeleton structure made of recycled tire strips is used to wrap and fix the non-woven fabric around the pile. This invention, by comprehensively utilizing the permeable concrete columns, the ring-shaped mesh skeleton structure, and the compressible rubber blocks containing permeable holes and ball joints, can achieve pile stability under small seismic loads, prevent pile breakage under large seismic loads, and allow the pile to quickly return to its original position after the seismic load disappears, thus ensuring a comprehensive application effect of "unmoved by small earthquakes, unyielding in large earthquakes, and self-repairing after earthquakes."

This invention discloses a modeling method for layered soft soil subgrades reinforced with pile foundations under simulated seismic loading, belonging to the field of seismic numerical simulation in geotechnical engineering. This method constructs a multi-field coupled numerical model based on a finite element platform, defines the contact mechanisms at the pile-soil and reinforced-subgrade interfaces, and completes the construction of in-situ stress equilibrium and initial pore water pressure fields. Static results are output through fill-consolidation coupling analysis. Distributed viscoelastic artificial boundaries are automatically constructed using Python scripts, and seismic waves are converted into equivalent nodal loads using wave theory. Multi-physics field connections between static and dynamic analysis boundaries are achieved, and core response parameters such as embankment settlement and pile-soil stress are output through implicit dynamic analysis. This invention considers the seismic wave propagation effect in layered soils, reduces spurious oscillations caused by the transformation of static and dynamic boundaries, and improves simulation accuracy and efficiency. It is suitable for seismic design and analysis of transportation infrastructure in soft soil areas.

The invention discloses a variable-stiffness friction slippage anti-swing three-dimensional shock isolation device and a shock absorption method thereof, and belongs to the technical field of building shock isolation and shock absorption. According to the technical scheme, the vibration damper comprises a top plate, a horizontal rubber support, a center mass block, a spring support, a limiting plate, a friction plate, a vertical rubber support and a bottom plate. The multi-stage self-adaptive rigidity mechanism has the beneficial effects that the friction material is arranged between the limiting plate and the friction plate, and the friction sliding position and the motion state can be controllably adjusted by adjusting the pre-tightening force of the bolt, the friction coefficient and the rigidity of the vertical rubber support, so that the multi-stage self-adaptive rigidity mechanism is formed; and the shock insulation and self-resetting performance of the structure under the action of horizontal and vertical earthquakes is obviously improved. The device has good three-dimensional shock insulation and swing resistance, and is simple in structure and convenient to install and maintain. The dynamic response of the upper structure applying the device under the earthquake action can be effectively inhibited, so that the structural safety and the use comfort are guaranteed.

The utility model discloses a pressing plate type glass curtain wall which comprises a glass curtain wall positioning frame, a glass body is installed on the inner wall of the glass curtain wall positioning frame in a positioning mode, and a pressing plate positioning mechanism is installed at the upper end of the glass curtain wall positioning frame in a positioning mode. The pressing plate positioning mechanism comprises a glass outer positioning frame, an inner movable groove, a triangular preliminary positioning block, a limiting block, a damper, an elastic piece, an insertion positioning groove, an anti-skid cushion block, an inner supporting abutting plate, a positioning preliminary groove, an inner filling rubber pad, a positioning pressing plate frame and an insertion positioning block. According to the pressing plate type glass curtain wall, due to the arrangement of the pressing plate positioning mechanism, it can be guaranteed that the glass plate is installed more smoothly, the problem that the surface is uneven is solved, meanwhile, larger wind loads and earthquake loads can be borne, the safety of the curtain wall is improved, and under the extreme weather condition, the curtain wall is not prone to falling off. The embedded positioning can effectively prevent the glass plate from falling off, and the risk of property loss and personal injury is reduced.

To provide an H-shaped steel beam capable of securing high plastic deformation performance against an earthquake load with a simple structure without complicating a shape of a horizontal haunch in the H-shaped steel beam provided with the horizontal haunch at an end in a material axial direction, and a method for manufacturing the H-shaped steel beam.SOLUTION: There is provided an H-shaped steel beam in which a horizontal haunch is provided at an end portion in a material axis direction, the horizontal haunch is welded and joined to a beam flange, weld metal between the horizontal haunch and the beam flange is continuously provided so as to be extended to a center side in the material axis direction by a length Lw from a widening start position by the horizontal haunch, and the length Lw satisfies a predetermined relationship.SELECTED DRAWING: Figure 1

This utility model relates to the field of civil engineering technology, specifically a pile foundation shaking table test device. It includes a shaking table body, a container on top of which holds soil and a pile foundation model. The container includes a coaxially arranged rigid inner frame and a rigid outer frame. A flexible sidewall structure is provided between the rigid inner frame and the rigid outer frame. The flexible sidewall structure consists of circumferentially spliced ​​flexible plates and multiple sets of micro-springs connecting the inner surface of the flexible plates to the outer surface of the rigid inner frame. The top and bottom of the flexible plates are connected to the rigid inner and outer frames via sliding guide components to allow radial displacement of the flexible plates in the horizontal plane. This pile foundation shaking table test device, by improving the boundary structure, effectively reduces the soil boundary effect, more realistically simulates the interaction between the pile and soil system under seismic loading, and improves the accuracy of the test.

The invention belongs to the technical field of constructional engineering, and particularly relates to a factory building main body structure for biomass fuel detection, which comprises a steel structure factory building main body, a constant temperature detection room is fixedly mounted on the inner side wall of the steel structure factory building main body, and a temporary maintenance workshop is arranged in the steel structure factory building main body. An intelligent scale is fixedly mounted on the inner bottom wall of the temporary maintenance workshop, and an intelligent vehicle identification barrier gate is arranged at the front end of the intelligent scale; through a composite connection structure of an arched ridge beam and an arched string beam in a building assembly, concentrated loads are converted into dispersed stress by utilizing the mechanical property of a cambered surface, the overall bearing capacity and deformation resistance of the structure are improved, and the overall anti-seismic network constructed by an anti-seismic frame and a top beam longitudinal rod is matched with the stress dispersion design of a kidney-shaped hole array, so that the anti-seismic performance of the structure is improved. External impact and earthquake load can be effectively resisted, the risk of local damage of the structure is reduced, and reliable structural safety guarantee is provided for a plant main body and internal precision equipment.

The present invention discloses a method for designing and installing a prestressed tuned mass damper under wave or seismic loads, including the step of calculating the parameters of the prestressed tuned mass damper based on the material parameters and geometric parameters of the wind turbine and the dynamic parameters of the wind turbine tower structure. By adopting the above technical solution, the parameters of the prestressed tuned mass damper are calculated based on the parameters of the wind turbine through a series of calculations. Then, the corresponding prestressed tuned mass damper is selected based on the parameters and installed on the wind turbine tower. This method can overcome the problem that the tower of an ultra-high wind turbine on land is easily damaged by fatigue of the wind turbine set due to wave and seismic vibration, and the tower safety is difficult to ensure. It can also achieve reasonable, effective, economical, practical, safe and reliable control of the vibration of the wind turbine tower.

1. The name of the design product: Bridge expansion joint (wave shape). 2. The use of the design product: The design product is arranged at the bridge surface connecting position between two bridges, between the bridge end and the abutment, and is used to compensate for the bridge deformation caused by the temperature load, live load under normal conditions, and the earthquake load, impact load, settlement displacement under sudden conditions. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model discloses a floor type mounting structure of glass curtain wall relates to glass curtain wall technical field contains stainless steel groove, glass panel, switching steel sheet and concrete base, stainless steel groove passes through indoor terrace lengthways, and the top of stainless steel groove is flush with indoor terrace, switching steel sheet has two, and is located stainless steel groove's both sides respectively, and stainless steel groove is fixed and installed on concrete base through two switching steel sheets, stainless steel groove is U -shaped, and the lower end of glass panel is embedded in stainless steel groove, and the both sides and bottom of glass panel are all provided with flexible pad in stainless steel groove inner wall contact position, and the whole of the whole structure and stability are improved to the whole safety of the guarantee under the strong wind or earthquake load, and it is not easy to displace, and the whole safety is guaranteed, and the sealing of the connecting position is carried out to the silicone sealant, effectively avoid the generation of gap, improve the leakproofness, prevent rainwater seepage.

The application provides a rock-soil body dynamic damage simulation method based on an energy dissipation hot spot, comprising the following steps: constructing a near-field dynamics and discrete element coupling model for describing the mechanical state of particles under the action of an earthquake; calculating the force information of the particles; calculating the particle velocity and displacement according to the force information of the particles, and analyzing the damage process according to the energy dissipation hot spot to obtain a calculation result; and outputting the calculation result and drawing a cloud chart. The application constructs a near-field dynamics and discrete element coupling model for the slope instability phenomenon under the action of an earthquake, and applies the model to a discrete element software to form a method for describing the deformation and damage characteristics of a slope under the disturbance of an earthquake; the application analyzes the shape and characteristics of a sliding surface through the rock-soil body dynamic damage simulation method based on the energy dissipation hot spot, reflects the process of slope instability under the action of an earthquake, improves the prediction accuracy and the recognition accuracy of the sliding surface, and has a significant advantage in the prediction of the progressive damage of rock-soil bodies and sudden landslides.

This invention discloses a piezoelectric tuned mass rate-independent damper and its parameter design method. Compared to traditional tuned mass dampers, the original linear viscous damping element in the damper is replaced with a rate-independent linear damping element, thereby providing a damping force independent of vibration frequency. Furthermore, after replacing the damping element, in order to optimize the piezoelectric tuned mass rate-independent damper's effect on the displacement response of the structure under seismic load excitation, the invention proposes a parameter optimization design method for the piezoelectric tuned mass rate-independent damper based on the displacement transfer function of the main structure and the ground motion, with the goal of minimizing the peak displacement response of the main structure.

The invention discloses a covering layer foundation soil dynamic pore pressure-deformation indoor triaxial test method for reflecting an earthquake loading process, and belongs to the field of geotechnical engineering and earthquake engineering. Firstly, a numerical geometric model is created, and soil physical and mechanical parameters are input; secondly, carrying out power time history response analysis, outputting seismic dynamic stress response time histories of soil mass units at different positions and different depths in a numerical simulation result, and converting the seismic dynamic stress response time histories into test control loads; thirdly, carrying out an indoor dynamic test, loading a test control load, and collecting dynamic response data of the soil body under the earthquake action; and finally, on the basis of the dynamic response data, determining dynamic test results of all units of the covering layer by adopting an interpolation method according to stress states and dynamic strain amplitude interpolation, and completing dynamic characteristic analysis. According to the method, excessive simplification and blind test of a traditional test can be avoided, the authenticity and accuracy of the foundation soil dynamic test are remarkably improved, and the method is suitable for accurate evaluation of the dynamic characteristics of the ultra-deep soft covering layer foundation soil.

The system comprises a main beam, a pier, a variable damping friction pendulum support, a support upper seat plate, an upper spherical sliding plate, a spherical crown lining plate, a spherical sliding plate, a middle steel lining plate, a lower spherical sliding plate, a support lower seat plate and a fixed constraint tenon, the device comprises a fixed type upper anchoring assembly, a fixed type upper seat plate, a fixed type limiting ring, a fixed type shear pin, a fixed type lower seat plate, a fixed type buffering cushion, a fixed type lower anchoring assembly and a transverse type restraining tenon. The device comprises a transverse upper anchoring assembly, a transverse upper seat plate, a transverse limiting ring, a transverse shear pin, a transverse lower seat plate, a transverse buffer pad, a transverse lower anchoring assembly and a beam falling prevention device. According to the system, function separation and cooperation of the bridge in a normal state and under the earthquake action can be achieved, and the anti-seismic toughness of the bridge structure is improved.

The invention provides a method for analyzing the damage of a hidden part of a track structure after train derailment caused by an earthquake, and relates to the field of dynamic response analysis of track structures. The method comprises the following steps: establishing a track substructure model, sequentially establishing track substructures such as a steel rail, a fastener system, a track plate, a filling layer and a base plate from top to bottom, and introducing cohesion unit simulation between structural layers, according to the earthquake load simulation, earthquake waves are transmitted to the structural non-supporting point freedom degree through the structural supporting point freedom degree, and then the whole vehicle system is influenced. According to the method, the accuracy and the calculation efficiency of dynamic response analysis of a track structure under the earthquake action are remarkably improved by introducing an improved nonlinear elastic theory and a multi-point non-Hertz contact model and combining a modal superposition method and a multi-scale analysis method in consideration of a vehicle-track complex collision contact behavior after derailment.

The invention provides a complex curved surface variable cross-section concrete cable bent tower and a construction method. The construction method comprises the construction steps of foundation construction, cable bent tower bottom column construction, cable bent tower middle section construction, cable bent tower closure section construction, cable bent tower top construction and cable bent tower additional treatment. According to the complex curved surface variable cross-section concrete cable bent tower and the construction method, stability and reliability of a cable bent tower foundation are guaranteed in a soft soil foundation or underwater environment; a stable, fast and adjustable working platform is provided for key procedures such as formwork supporting, steel bar binding and concrete pouring of the cable bent tower; the bearing capacity and the overall rigidity of the cable bent tower are enhanced; the construction efficiency of formwork building and concrete pouring is improved, and the quality and flatness of the surface of the cable bent tower are guaranteed; the stress concentration and deformation of the cable bent tower when the cable bent tower bears horizontal loads (such as wind loads, earthquake loads and traffic loads) are effectively reduced.

The invention discloses a steep dip inner stratified rock slope stability assessment method used under the earthquake action, and relates to the technical field of geological safety assessment, geological parameters of a target geological area are acquired, and corresponding slope body building blocks are established according to the acquired geological parameters of the target geological area; fitting the slope body building blocks to obtain a steep dip inner stratified rock model corresponding to the target geological area; arranging corresponding sensors and DIC speckles for the steep dip inner stratified rock model to obtain a corresponding steep dip inner stratified rock slope physical model; placing the steep dip inner stratified rock slope physical model on a vibration table, applying a horizontal seismic load, and obtaining seismic simulation state parameters of the steep dip inner stratified rock slope physical model under the horizontal seismic load; analyzing the stability of each slope body building block in the steep dip inner stratified rock slope physical model according to the obtained seismic simulation state parameters, and judging the slope stability of the target geological area according to the analysis result.

The invention belongs to the technical field of tunnel model tests, and particularly discloses a tunnel model test earthquake response testing device and method, and the device comprises a vibration table which is used for applying an earthquake load to a tunnel model; the model box is fixed on the vibration table, filled with soil and provided with a tunnel supporting structure; the speckles are pasted on the surface of the inner wall of the tunnel supporting structure and used for image recognition; the camera array is fixedly arranged relative to the tunnel supporting structure and is used for continuously shooting deformation images of the speckles; and the image processing unit is in communication connection with the camera array and is used for receiving, splicing and analyzing the deformation images to obtain full-field strain, displacement, deformation and acceleration data of the tunnel supporting structure under the action of the earthquake load. The testing device and method have the advantages of non-contact measurement, full-field continuous deformation monitoring, synchronous acquisition of multi-dimensional parameters and the like, and non-contact high-density seismic response data measurement of the tunnel model supporting structure can be realized.