12 results about "Earthquake energy" patented technology

The invention relates to the technical field of building structure engineering, in particular to an assembly type partition wall shock absorption connecting system based on a multi-stage energy dissipation mechanism and a construction method.The partition wall is converted into a multi-stage energy dissipation subsystem, and the equivalent damping ratio of the system is greatly increased; the gradient flexible layer works first, consumes energy and absolutely ensures that the decorative surface layer is intact, and the gradient flexible layer is not prone to deformation. According to the invention, the effects of no repair in small earthquakes, dissipation of most earthquake energy by a damping mechanism and aseismic main force are realized, and the integrated coping steel plate ensures that all battens participate in the process cooperatively, so that the robustness and anti-collapse capability of the structure under super-fortification earthquakes are greatly enhanced, and the qualitative improvement of the anti-seismic performance is realized; the method is suitable for newly-built and reinforced reconstruction projects with high requirements for seismic resistance, a complete, efficient and reliable assembly type partition wall damping solution is formed, and the method has high innovativeness and wide engineering application prospects.

The application discloses a deformation controlled corner brace with external metal energy absorber, which comprises an inner metal rod, an outer metal tube, a standby pull rod system, a connecting plate, a compression elastic pad and an external metal energy absorber. The inner metal rod is inserted into the inner part of the outer metal tube and is connected by the standby pull rod system in the inner part, and is connected by the external metal energy absorber on the outer surface. The inner part of the outer metal tube is provided with the compression elastic pad at the bottom end. The standby pull rod system limits the maximum tensile deformation of the inner metal rod relative to the outer metal tube, and the compression elastic pad reduces the impact of the inner metal rod on the outer metal tube. The application has the beneficial effects that when the structure bears the design expected earthquake effect, the application can dissipate the earthquake energy by the plastic deformation of the external metal energy absorber, when the structure bears the great earthquake effect and the structure deformation is large, the corner brace can be degraded into a force bearing support, the maximum deformation of the structure is limited, the lateral stiffness of the structure is improved, and the anti-collapse performance is improved.

The invention relates to the technical field of coal mine safety, and provides a deep well roadway surrounding rock blasting measure optimization design method and system. According to the determined residual mine earthquake energy of the migration of the key layer of each layer covering the target working face to the roadway supporting system and the theoretical impact resistance of the roadway supporting system of the target working face, determining a threat factor of the migration of the key layer of each layer to the roadway supporting system so as to identify a top plate blasting layer of the target working face; and then, a construction path and blasting parameters of target working face roof blasting are generated based on the recognized roof blasting position, and threat factors of migration of all key layers covering the target working face to a roadway supporting system are cyclically updated. Therefore, the impact resistance of a roadway support system is constrained, the'disaster-inducing-disaster-bearing 'matching of the blasting horizon is realized, the quantitative screening of the target blasting horizon is realized, the identification efficiency and accuracy are improved, and the rock burst and mine earthquake risks caused by misjudgment or missed judgment are reduced.

This application relates to a prefabricated composite shear wall based on a steel pipe structure, comprising two parallel composite slabs and an energy-dissipating steel-concrete composite member. A cavity is provided between the composite slabs to accommodate the energy-dissipating steel-concrete composite member. The energy-dissipating steel-concrete composite member comprises symmetrically arranged steel-concrete composite components, each consisting of four diagonally connected steel-concrete composite members. These components are prismatic in shape, with their edges abutting against beam members. In this application, when the energy-dissipating steel-concrete composite member is subjected to seismic forces, the eight diagonally connected steel-concrete composite members of the energy-dissipating steel pipe component collectively dissipate energy through bending, thereby absorbing some of the seismic energy. Furthermore, the strong load-bearing capacity of the energy-dissipating steel pipe component reinforces the weak points of the shear wall, reducing the occurrence of damage or failure of some shear wall components. This allows the components of the shear wall to work together to resist seismic forces, improving the overall seismic performance of the shear wall.

The invention belongs to the technical field of building seismic resistance, particularly relates to a seismic isolation support for multistage earthquakes, and aims at achieving precise adaptation and efficient resistance to earthquakes of different earthquake magnitudes. The support is mainly composed of a bottom plate, a second shock insulation support, a middle partition plate, a first shock insulation support, a top plate and a matched control mechanism, bolt holes are formed in the four corners of the bottom plate and the four corners of the top plate, and the bottom plate and the top plate can be firmly connected with a building body through high-strength bolts. Columnar bodies and an annular connecting plate which are annularly arranged are arranged on the middle partition plate, a locking mechanism can be jointly formed by combining a plug pin in a groove in the top end of the middle partition plate, a top plate through hole and an electromagnet, and the bearing capacity and rigidity of the support are accurately adjusted and controlled in cooperation with a displacement sensor and a target point. In small and medium earthquake magnitudes, only the first shock insulation support plays a shock insulation role; when the earthquake magnitude is increased, the second shock insulation support works in a relay mode, and strong earthquake energy is dissipated. According to the design, earthquake magnitude adaptation can be achieved, earthquake resistance is achieved according to needs, the earthquake resistance safety of a building is effectively improved, and the problem that a traditional earthquake isolation support is difficult to adapt to multi-earthquake-magnitude scenes is solved.

This application discloses a method, apparatus, equipment, medium, and product for shale gas platform site selection based on seismic risk assessment, relating to the field of platform site selection. The method includes: obtaining the fault hazard of a grid based on the shear stress and normal stress of triangular facet elements; inverting the stress field based on focal mechanism data to obtain the in-situ stress field of the triangular facet elements; clustering the maximum principal stress directions of the triangular facet elements and updating the maximum principal stress directions based on the cluster centers to obtain the maximum principal stress directions of the grid; interpolating the in-situ stress fields of the triangular facet elements to obtain the in-situ stress field of the grid; obtaining the seismic susceptibility of the grid based on factors such as the grid's historical seismic activity, fault hazard, in-situ stress field, historical earthquake frequency, historical earthquake energy, and maximum principal stress direction; and determining the optimal well placement location based on the grid's seismic susceptibility, fault hazard, and maximum principal stress direction. This application improves the rationality of shale gas platform site selection.

The utility model discloses an anti-seismic pipeline support sliding connection node, and relates to the technical field of pipeline supports. Comprising a fixing plate, a supporting sliding assembly is arranged on the top face of the fixing plate, a pipeline is fixed to a supporting frame through two fixing hoops by means of the arranged supporting sliding assembly, and when an earthquake occurs and causes the pipeline to move, the supporting frame slides in all directions along with the vibration amplitude under cooperation of a plurality of rotating balls; therefore, the situation that the pipeline is broken, disjointed or deformed due to the fact that force in a certain direction is too large is avoided, continuity and integrity of a pipeline system are effectively maintained, accidents such as leakage and breakage caused by pipeline damage are reduced, and meanwhile the limiting ring, the abrasion-resistant ring and the multiple compression springs are used in cooperation, so that the service life of the pipeline is prolonged. And sliding of the supporting frame can be buffered and limited conveniently, so that earthquake energy is absorbed and dissipated, the situation that the pipeline possibly collides with other adjacent facilities due to excessive displacement is avoided, and the stability of a pipeline system in an earthquake is ensured.

The invention relates to a post-earthquake self-repairing assembly type underground side wall and bottom plate connecting joint and a construction method thereof. The side wall and bottom plate connecting joint comprises a cast-in-place bottom plate; the post-cast UHPC layer is cast above the cast-in-place bottom plate; the prefabricated side wall plate is positioned above the cast-in-place bottom plate and forms a whole with the post-cast UHPC layer; the SMA damper is located in the post-pouring UHPC layer, and the two ends of the SMA damper are connected with the cast-in-place bottom plate and the post-pouring UHPC layer correspondingly; and the post-pouring common concrete is poured on the post-pouring UHPC layer. Compared with the prior art, the joint is simple in structure, clear in force transmission path and rapid in construction, the SMA damper consumes earthquake energy during an earthquake, residual deformation can be eliminated through heating after the earthquake, structural damage self-repairing is achieved, and the anti-seismic toughness level of an underground structure is improved.

The invention relates to a bridge anti-seismic support and a design method, and belongs to the technical field of bridge seismic resistance, the bridge anti-seismic support comprises a pier, a bridge support and a plurality of connecting ropes, the interface of the bridge support and the pier is provided with a connecting pad and a damping telescopic rod, the connecting pad and the damping telescopic rod are used for absorbing and dissipating earthquake energy and reducing damage of an earthquake to a bridge structure, and the bridge structure is protected. Each connecting rope is provided with a spring damper to adapt to displacement and stress generated by the earthquake action on the bridge. The design method comprises the steps of data collection, preliminary determination of parameters of connecting ropes, earthquake load analysis, preliminary estimation of layout of the connecting ropes, determination of installation pre-tightening force of the connecting ropes and optimization and verification. The design of the bridge anti-seismic support reaches the optimal state, and the safety and stability of a bridge in an earthquake are guaranteed to the maximum extent.

The utility model relates to the field of building production, in particular to an anti-seismic test device for a building structure framework, which comprises a first mounting seat, two second mounting seats are slidably connected onto the first mounting seat, two first mounting plates are arranged on the upper sides of the front and rear parts of the first mounting seat, and two first dampers are mounted on each first mounting plate. The first dampers are connected with the adjacent second mounting bases, first springs are arranged between the second mounting bases and the corresponding first dampers, the two second dampers are arranged on the upper portions of the second mounting bases, and vibrators are arranged between the adjacent second dampers. Based on a self-adaptive clamping system of the two-way screw rod and the rubber pad, when earthquake energy is precisely conducted, stress concentration is eliminated, the vibration freedom degree is given to a test piece, frequency spectrum energy phagocytosis from high-frequency vibration to main body seismic waves is achieved by means of gradient energy dissipation topology between the spring and the damper, and the vibration energy dissipation precision of the test piece is improved. And the reproduction precision of the seismic waves is increased to a simulation level.

The present application relates to the technical field of coal mine earthquake prediction, and particularly relates to a method for judging influence of large-scale rhombic combined cantilever plate on mine earthquake, which comprises the following steps: dividing the working face into two mining areas along the strike according to the coal seam thickness; performing key layer discrimination; calculating the thickness of the combined cantilever plate according to the height of the water flowing fractured zone; determining the position of the key layer in the combined cantilever plate, and simplifying the multiple rock layers controlled by each key layer into one soft rock group with consistent properties; calculating the fracture step distance of the combined cantilever plate; calculating the mine earthquake energy caused by the breakage of the combined cantilever plate; converting the mine earthquake energy into the Richter magnitude; and judging the influence on the mine earthquake. The present application can calculate the mine earthquake energy released when the combined cantilever plate breaks, so as to predict the mine earthquake grade induced by the breakage of the combined cantilever plate under the influence of mining. The mine can predict the mine earthquake grade according to the method, and take active and effective prevention measures according to the prediction, so as to ensure the safety production of the coal mine.

The utility model relates to the technical field of building shock insulation, and discloses a stiffened ring lead core steel pipe shock insulation support, which comprises a steel pipe, the upper and lower ends of the steel pipe are fixedly connected with connecting steel plates, the top end of the connecting steel plate on the lower side is fixedly connected with two support plates one, the top end of each of the two support plates one is fixedly connected with two support rods, the outer side of each of the two support rods is slidably connected with a connecting block, a screw rod is threadedly connected in the connecting block, a small bolt is threadedly connected to the outer side of the screw rod, the top end of the connecting block is fixedly connected with two fixed columns, and the top end of each of the two fixed columns is fixedly connected with a connecting ring. In the utility model, the ground beam, the support plate and the damper and other components work together to realize shock resistance and buffering, the damper is deformed to store energy and then releases the energy under the action of earthquake vibration, pushes the support plate to reset, the sliding column is prevented from being deviated, can absorb earthquake energy, provides auxiliary support for the device, reduces structural response, and improves the seismic safety of the building.