73 results about "Seismic loading" patented technology

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 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 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.

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.

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 invention discloses an existing masonry structure wall seismic strengthening design method based on topological optimization. The method comprises the steps that firstly, a wall surface layer strengthening finite element model is established; 2, establishing a topological optimization model for wall reinforcement; 3, calculating unit sensitivity and a target function, and updating the unit sensitivity by adopting a sensitivity filtering method; 4, obtaining the target volume of the unit by using the unit sensitivity in the step 3; and fifthly, the third step and the fourth step are repeated, the unit density and the target volume of all units are obtained, and then the optimal reinforcement distribution scheme of the wall is obtained. According to the method, the topological optimization technology is adopted, the stress distribution of the wall under the earthquake load is accurately analyzed, the optimal reinforcement distribution scheme of the wall is obtained, reinforcement materials are arranged in a key stress area in a concentrated mode, and the space distribution and use mode of the materials are optimized; the reasonable material distribution mode reduces the cost of reinforcement engineering on the premise of meeting the anti-seismic property requirement, is more economical and environment-friendly, and conforms to the concept of sustainable development.

This invention relates to the field of vibration monitoring technology, specifically to a dam vibration response monitoring device under seismic loading. The device includes a dam body with multiple equally spaced detection holes at its upper end. A positioning mechanism is installed within each detection hole, and a vertical rod extends through the positioning mechanism. A pressing mechanism is located at the lower end of the vertical rod, and two movable frames are mounted on the pressing mechanism. The lower end of the vertical rod extends into the detection holes. Multiple mounting slots are equally spaced on both sides of the vertical rod from top to bottom, and a linkage detection mechanism is installed within each mounting slot. This invention ensures that the roller is always in contact with the inner wall of the detection hole, enabling accurate detection of vibration on the inner wall of the detection hole and comprehensive monitoring of changes at the top of the dam. The multi-point detection and multi-point reception improves monitoring quality, facilitating timely detection of dam vibrations caused by seismic loading for preventative measures and to ensure safety.

The invention relates to the technical field of geological disaster analysis, and particularly discloses a controllable time sequence superposition seismic load structure physical simulation experiment system which comprises a structure physical simulation device, a seismic source hammering system, a seismic wave simulation vibration table and a data monitoring module. The seismic source hammering system can simulate earthquakes with different coordinates, different seismic source depths and different seismic load intensities, the seismic wave simulation vibration table can realize simulation of multiple types of seismic waves, through cooperative use of the seismic source hammering system and the seismic wave simulation vibration table, sequence activities of the earthquakes can be truly presented, and the dynamic effect of the seismic source hammering system has time sequence superposition performance; through the arrangement of the construction physical simulation equipment, the seismic wave simulation vibration table and the seismic source hammering system, the dynamic coupling of the construction stress field and the time sequence seismic motion can be realized; the method is helpful for researching the deformation and displacement process of each geologic body model in the critical state of the tectonic stress field under the seismic oscillation disturbance.

This application relates to a three-dimensional experimental device and method for simulating the dynamic response of seismic slopes. The device includes a frame with a model mounting box containing a slope model. The bottom of the model is connected to front-back, left-right, and up-down movable components. A drive mechanism on the side wall of the frame causes the components to vibrate synchronously. The application also includes a corresponding three-dimensional experimental method, covering steps such as pre-experiment preparation and model preparation, adjustment of three-dimensional vibration amplitude parameters, no-load debugging of the three-dimensional experimental device, three-dimensional seismic dynamic response simulation test, shutdown and reset, and data processing. This application achieves a realistic simulation of the multi-dimensional dynamic response process of a slope under seismic loads. The experimental results are closer to actual engineering conditions, significantly improving the reliability and accuracy of the experimental data. The three-dimensional vibration parameters can be independently adjusted to adapt to different simulation needs, greatly improving the efficiency and accuracy of indoor slope seismic simulation tests.

The invention provides a fastener stress determination method, electronic equipment and a readable storage medium, and is suitable for the technical field of fastener stress calculation. The method comprises the following steps: acquiring related parameter information; wherein the related parameter information is a parameter related to the stress of the fastener; based on an equivalent static method and the structure and the installation type of the motor, determining a target stress calculation formula from a preset corresponding relation between the motor and a stress calculation formula; wherein the equivalent static method is used for converting an earthquake load into an equivalent static load; and determining the stress of the fastener based on the related parameter information and a target stress calculation formula. According to the embodiment of the invention, the problems of high calculation cost, long time consumption and relatively high requirement on the precision of the model are avoided, the efficiency of calculating the stress of the fastener is improved, and the accuracy of calculating the stress of the fastener is ensured.

This invention discloses a method and system for probabilistic analysis of seismic displacement of heterogeneous slopes based on finite difference, which evaluates the seismic performance of important engineering slopes by generating slope sliding displacement hazard curves. The method and system first determine the statistical quantities of slope soil parameters and select seismic wave records that match the slope site conditions; then, it generates random field samples of soil parameters and iteratively executes stochastic finite difference numerical simulations to calculate the cumulative slope displacement; next, it constructs a slope displacement prediction model using seismic motion parameters and displacement data, and optimizes the seismic motion parameters based on the model's standard deviation; finally, it develops a slope seismic sliding displacement hazard curve within the framework of probabilistic seismic hazard analysis, estimating the displacement value corresponding to the exceedance probability in the target year. This invention can effectively characterize the spatial variability of soil parameters and the uncertainty of seismic loads, and capture the stress-deformation mechanism of slopes under seismic loading, providing an effective approach for the seismic design of highly important engineering slopes.

1. The name of the design product: Bridge seamless expansion joint (arch type). 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.

The invention relates to the technical field of earthquake resistance and shock absorption of buildings, in particular to a double-step viscous damping wall which is characterized in that a first cavity, two second cavities and two third cavities are formed in a shell, and the two second cavities are symmetrically distributed at the two opposite ends of the first cavity and communicate with the first cavity; one third chamber is positioned at one end, far away from the first chamber, of one second chamber and is communicated with the corresponding second chamber; the other third chamber is positioned at one end, far away from the first chamber, of the other second chamber and is communicated with the corresponding second chamber; the damping medium is filled in the first cavity, the second cavity and the third cavity; the sliding plate is arranged in the shell, and the sliding plate slides in the first cavity, the second cavity and the third cavity in the length direction of the shell to shear the damping medium to achieve flexible energy consumption. Through smooth switching of the end part of the sliding plate between the first-order position (the second cavity) and the second-order position (the third cavity), the seismic load of different strengths can be adapted.

The invention discloses an earthquake response modeling and analysis method for a deep underground chamber structure. The method comprises the following steps: firstly, constructing a finite element and infinite element coupled three-dimensional calculation model; then, a mapping relation between the initial crustal stress data and stress field parameters is constructed, the stress field parameters are assigned to a three-dimensional calculation model, and the initial stress field parameters are iteratively corrected by applying pressure to the model; then, converting the seismic load into an equivalent acceleration load, applying the equivalent acceleration load to the boundary of the bottom of the model, and continuously spreading the equivalent acceleration load between near-field and far-field rock masses; and finally, earthquake response calculation is carried out, the displacement, stress distribution, acceleration response and development process of the chamber structure under the earthquake action are simulated, and key indexes are extracted to analyze the response rules of the chamber structure under different earthquake intensities and different burial depths. According to the method, the refinement of the model and the high efficiency of calculation are both considered, the error of cross-software operation is reduced, the working efficiency is improved, and a direct numerical basis can be provided for the aseismic design of the deeply-buried underground chamber structure.

The invention discloses an active prevention and control system for sand foundation damage under the earthquake action and a construction method of the active prevention and control system. The system comprises a main body structure pressed into a sand stratum, earthquake frequency obtaining units annularly distributed on the periphery of the main body structure and a power supply unit on the top. The main body structure comprises an analysis feedback unit, an execution unit and a reinforcement unit, the analysis feedback unit receives seismic frequency data and generates an anti-phase waveform instruction, and the execution unit vibrates to weaken the seismic action; and under the high-strength earthquake working condition, the earthquake load effect rises, the pore water pressure rises to the preset threshold value, the reinforcing units are triggered, the reinforcing grout flows out of the honeycomb grid-shaped side wall, and grouting reinforcement of the foundation is achieved. The construction method comprises the steps of site exploration, drilling operation, unit layout, structure lowering, connection debugging and effect detection. By means of the principle of interference reduction, through the synergistic effect of active vibration reduction and instant reinforcement, full-stage prevention and control of sand liquefaction are achieved, the response speed is high, and the reinforcement effect can be achieved to the maximum extent.

The invention provides a river sluice dam optimization method and system based on anti-seismic simulation, and the method comprises the steps: obtaining design parameters, geological conditions and actual operation conditions of a river sluice dam, and drawing up a plurality of calculation conditions including earthquake load action combinations; carrying out structural stress and deformation calculation on the river sluice dam under each calculation working condition to obtain a quasi-static method stress deformation result; on the basis of the quasi-static method stress deformation result, a target evaluation area is recognized, dynamic time history analysis of the dam body and the dam foundation system is carried out for the target evaluation area according to design parameters and geological conditions, and an earthquake dynamic response result is obtained; performing comprehensive safety evaluation on the anti-seismic stability and the structural strength of the river sluice dam by fusing a quasi-static method stress deformation result and an earthquake dynamic response result; according to the comprehensive safety evaluation result, a processing scheme is provided for the river sluice dam structure which does not meet the preset anti-seismic safety standard, and more comprehensive, reliable and refined comprehensive evaluation of the anti-seismic performance of the river sluice dam is achieved.

This invention relates to the field of building engineering technology, and provides a steel node component and a modular steel frame energy-dissipating support system using it. It includes: two vertically parallel steel columns, a top steel beam horizontally positioned at the top, a bottom steel beam horizontally positioned at the bottom, four steel nodes, two steel connectors, and one energy-dissipating support. The two ends of the top and bottom steel beams are welded to the corresponding ends of the two steel columns via the four steel nodes, forming a basic rectangular steel frame module. The two steel connectors are welded and fixed to two opposite steel nodes on a diagonal of the steel frame module. The two ends of the energy-dissipating support are connected to the two steel connectors. The beneficial effect is that under seismic loading, the top and bottom steel beams undergo horizontal displacement deformation, and the energy-dissipating support undergoes axial deformation accordingly, providing sufficient stiffness and load-bearing capacity, protecting the main steel frame structure from severe earthquake damage.

The invention discloses an anti-overturning stability optimization and adjustment method for a tower-type water inlet of a reservoir, which is characterized in that the optimization and adjustment of the tower-type water inlet are divided into six conditions based on key factors influencing the anti-overturning stability of the tower-type water inlet, so that the efficiency of the anti-overturning stability optimization and adjustment of the tower-type water inlet of the reservoir is greatly improved, and the error rate is reduced. The defects that modeling is complex, earthquake load calculation is tedious, and an optimization adjustment method is not clear are overcome, and a scientific and reliable decision basis is provided for design of the tower type water inlet of the reservoir.

Disclosed are: a Rahmen structure in which an upper structure and an abutment having significantly greater cross-sectional rigidity than a pier are integrated in order to prevent a Rahmen bridge from collapsing due to an earthquake load or the like; and a construction method thereof. To this end, the Rahmen structure comprises: an abutment; a plurality of girders sitting on the abutment; a plurality of longitudinal tension members inserted into the girder in a parabolic shape along the longitudinal direction of the girder to introduce a plurality of compressive forces into the girder, and installed in the girder such that the far ends are exposed at the front of the girder; a first movable anchoring element installed in front of the girder and on the longitudinal tension members exposed at the front of the girder so that the far ends of the longitudinal tension members are anchored to the girder; and a connection slab sitting on the plurality of girders. According to the present invention, a shear connector and the longitudinal tension members installed in the girder can absorb horizontal and vertical displacements, and thus can preventing the Rahmen bridge from collapsing even when an earthquake load due to an earthquake is applied to the Rahmen bridge.