44 results about "Seismic zone" patented technology

The present invention describes the use of a space-based Extremely Low Frequency (ELF) magnetic field detector in conjunction with ground-based network of ELF magnetic field detectors. In particular, a space based ELF detection system can be used to perform a wide area search and find precursor earthquake signals in both known and unknown earthquake zones, and a ground-based network of ELF detectors can be used to verify that the signals are indeed earthquake generated signals. The use of this invention will minimize cost and manpower necessary to effectuate an accurate and reliable earthquake detection system.

For providing earthquake data for a defined area, stored are locations of a plurality of earthquake epicenters and seismic parameters associated with a plurality of seismic zones. The seismic parameters are indicative at least of magnitude and likelihood of earthquakes in each of the seismic zones. A location of a selected epicenter, within the defined area, is determined (S31) from the stored locations. Determined from the seismic parameters is a selected magnitude (S34) associated with a selected seismic zone comprising the selected epicenter. Established are characteristics of a plurality of earthquake events (S3) in the area over a defined length of time. The characteristics of an earthquake event include at least a selected epicenter and a selected magnitude. Generated is a signal indicative of the characteristics of the earthquake events. Enabled is an easy to maintain earthquake hazard model, having flexible and simple parameterization, and providing earthquake data consistent with historical data.

The present invention belongs to the technical field of the structural engineering, and in particular relates to an ultra high-rise combined wall double structure system. The invention is composed of a beam column component, a stronger shear wall and weaker two-edge connecting assembling steel plate walls. In the system, a connecting-leg shear wall system is composed of a combined steel plate wall and a framework girder, and a thin combined steel plate wall which is only connected with the framework column is filled with a span which is provided with a steel coupling beam. The stronger combined steel plate wall is the combined steel plate wall which is connected at four edges and is restrained by the prefabricated or cast-in-place concrete plate at two sides. The concrete plate and the middle steel plate are connected with bolt. The thin combined steel plate wall is the thin combined steel plate which is only connected with framework columns at two sides and is restrained by the precast concrete plate at two sides. The steel coupling beam and the adjacent span adopt a rigid connection mode. The ultra high-rise combined wall system provided by the invention is suitable for the seismic zone and has a series of predominant characteristics of definite breakage mode in the function of the earthquake, high bearing capacity, large hardness at the resistant side, centralized damage, facilitating the reparation and the like. The combined wall system of the invention has excellent aseismic behavior, ductibility and hysteresis energy dissipation capability, and is a predominant shock resistant energy dissipating component.

The invention discloses a modular prefabricated steel-concrete combination frame structure which is composed of a prefabricated combination frame module and a modular connecting piece. The prefabricated combination frame module is composed of pre-embedded concrete-filled steel pipe prefabricated columns, pre-embedded profile steel concrete laminated beams and a concrete laminated plate. Steel pipes of the pre-embedded concrete-filled steel pipe prefabricated columns and profile steel of the pre-embedded profile steel concrete laminated beams are connected in a welded or bolted mode at joints.The concrete laminated plate is placed on protective layer concrete of the pre-embedded profile steel concrete laminated beams. Laminated layer concrete and concrete at the joints of the pre-embeddedconcrete-filled steel pipe prefabricated columns and the pre-embedded profile steel concrete laminated beams are poured jointly. The modular connecting piece is formed by welding of a connecting steelplate and high-strength steel pipes. According to the modular combination frame structure, the technical advantages of modular prefabrication can be given into full play, the seismic performance requirement can also be met, the technical and economic benefits are obvious, and the modular prefabricated steel-concrete combination frame structure is applicable to a seismic zone frame structure.

The invention relates to the technical field of earthquake early warning and particularly relates to a high-speed rail earthquake early warning method and system. The method comprises steps of obtaining train data which comprises a running line, a train running direction and current position data; finding out first monitoring data according to the running line, the train running direction and the current position data, wherein the first monitoring data is geological stability data on a first seismic zone through which a train corresponding to the train data will pass; obtaining earthquake prediction data according to the first monitoring data, wherein the earthquake prediction data is data for predicting earthquake occurrence; according to the earthquake prediction data, an early warning instruction being sent to the corresponding train, and the early warning instruction being an instruction for prompting a driver on the corresponding train that the earthquake zone in front of the driver is dangerous, according to the earthquake prediction data, the geological stability data of the earthquake zone in front of each running high-speed train being monitored in real time. The method is advantaged in that ultra-fast early warning of each running high-speed train can be realized.

The invention discloses a safe anti-seismic multi-layer buffer building structure, and relates to the technical field of buildings. The safe anti-seismic multi-layer buffer building structure comprises a fixed bottom plate, grounding assemblies are connected to the periphery of the top end of the fixed bottom plate through threads, and a buffer stabilizing assembly is fixedly connected to the top end of the fixed bottom plate; and a bearing plate is fixedly connected to the end, opposite to the fixed bottom plate, of the buffer stabilizing assembly, hydraulic shock absorbers which are evenly distributed are fixedly connected to the end, opposite to the buffer stabilizing assembly, of the bearing plate, a stress assembly is fixedly connected to the top ends of the hydraulic shock absorbers, and a stress plate is fixedly connected to the top end of the stress assembly. According to the safe anti-seismic multi-layer buffer building structure, the integrally formed multi-buffer structure has a special effect when encountering special situations such as earthquakes, so that the stability degree of the buildings above is better, the escape time can be effectively prolonged or the damage degree of the buildings caused by earthquake waves can be effectively reduced, and the safe anti-seismic multi-layer buffer building structure is suitable for being used by residents on an earthquake zone.

The invention discloses a method for predicting the damage angle of a gully accumulation body in a water-saturated state. The method comprises the following steps: performing field investigation, measurement and sampling of a debris flow groove in a seismic zone, and extraction of characteristic parameters of the debris flow gully; determining the volume weight of the accumulation body [gamma]S in the debris flow gully, the thickness of the accumulation body h, the saturated internal friction angle [theta] of the accumulation body, the porosity [epsilon] of the accumulation body, the thickness [delta]h of any accumulation body, and the gradient of the gully bed [alpha]; and substituting the obtained parameters into the formula to determine the damage angle of the accumulation body of the debris flow gully in the seismic zone in the water-saturated state. Compared with the prior art, the invention is based on rigorous theoretical derivation, which can reasonably accurately reflect the damage angle of the accumulation body in the debris flow gully in the Wenchuan earthquake area under rainfall-saturated conditions and provide a theoretical basis for the prevention and control of the debris flow in the post-earthquake reconstruction. The calculation result is high-precision and meets the need of actual project.

The invention discloses a safe and anti-seismic multi-layer buffer building structure, which relates to the field of building technology, and comprises a fixed base plate, a grounding component is connected to the top of the fixed base plate through threads, and a buffer stabilization component is fixedly connected to the top of the fixed base plate , the end of the buffer stabilization assembly opposite to the fixed bottom plate is fixedly connected with a bearing plate, the end of the load bearing plate opposite to the buffer stabilization assembly is fixedly connected with evenly distributed hydraulic shock absorbers, and the top ends of the hydraulic shock absorbers are fixedly connected There are stress-bearing components, and the top of the force-bearing component is fixedly connected with a force-bearing plate. The integrally formed multiple buffer structure of the present invention has a special effect when encountering special circumstances such as earthquakes, so that the stability of the building above is better. , which can effectively prolong the escape time or reduce the degree of damage to buildings by earthquake waves, and is suitable for residents in earthquake zones.

The invention relates to a magnetorheological building foundation column, and belongs to the technical field of building seismic fortification. The foundation column is in a discontinuous hollow cylindrical shape, and a hollow cavity is filled with magnetorheological fluid; the inner wall of the foundation column is smooth, coils are wound around the inner wall of the foundation column, and the outer wall of the foundation column is a rough surface. The magnetorheological fluid in the foundation column is subjected to a magnetorheological phenomenon when a building is subjected to an earthquake, by using the energy absorption effect in the change process of the magnetorheological fluid, a part of vibrations, shakes and the like which are caused by the earthquake and are about to attack thebuilding are absorbed, so that destruction caused by the earthquake to the building is reduced or delayed, in this way, damage to the building is reduced, and more escape time is earned for people inthe building. The foundation column is provided with an earthquake monitor to detect the earthquake intensity and the earthquake duration time; the building is internally provided with an angle sensor which is used for detecting the inclination degree of the building in the earthquake; a result which a system detects according to the earthquake monitor and the angle sensor controls the working state of the magnetorheological foundation column in each direction.

The invention discloses an anti-seismic structure suitable for tunnel lining in high-intensity earthquake areas and a construction method thereof. The anti-seismic structure includes primary support and secondary lining with gaps therebetween; along the axial direction of the secondary lining, inside the gap, etc. Multiple damper packs are spaced apart; each pack consists of at least five dampers; the space enclosed by primary support, secondary lining and all dampers is filled with porous rubber particles concrete. Build primary support and secondary lining as required in the section where lining is required, lay water-stop layer, install damper between primary support and secondary lining, spray porous concrete mixed with rubber particles, and build a structure suitable for high-intensity earthquakes Seismic structure of the tunnel lining in the area. The anti-seismic structure has certain cushioning properties, and can allow minor deformation and damage to the secondary lining. After the earthquake, the lining structure will not experience large deformation and damage, which solves the problem of structural damage to the tunnel lining under the earthquake.

The present disclosure disclose a method, an apparatus and a system for eliminating a frequency dispersion effect, wherein the method comprises: testing a core sample to obtain logging band velocities and seismic band velocities under different pressures; fitting a relationship between a stratum pressure and the logging band velocity using the logging band velocities under different pressures, and fitting a relationship between the stratum pressure and the seismic band velocity using the seismic band velocities under different pressures; and eliminating a frequency dispersion effect in a target area using the relationship between the stratum pressure and the logging band velocity and the relationship between the stratum pressure and the seismic band velocity.

The invention discloses a supporting anchor rod for steel frame pneumatically placed concrete support in a smashing area of a high seismic belt. The supporting anchor rod for steel frame pneumaticallyplaced concrete support in the smashing area of the high seismic belt comprises a bracket, a fixed block, a supporting part used for supporting building, a drive part used for driving the supportingpart to move up and down and a first connecting plate, wherein a first through hole penetrating up and down is formed in the middle of the fixed block, and the outer side of the first through hole isfixedly connected with the bracket; the supporting part is slidably arranged in the first through hole in a penetrating mode; the lower end of the supporting part is fixed to the drive end of the drive part; the lower end of the drive part is fixed to the first connecting plate; and the first connecting plate is located below the supporting part and fixedly connected with the bracket. According tothe supporting anchor rod for steel frame pneumatically placed concrete support in the smashing area of the high seismic belt, the height of the supporting anchor rod can be adjusted slightly, time is shortened, labor is saved, and the working efficiency is high.

The invention discloses a bracket for spray anchor net support construction for a high seismic zone crushing area. The bracket comprises one or more bracket single bodies; the bracket single bodies comprise spray anchor nets, bracket strips, limiting plates, positioning nuts and inserting rods; each spray anchor net is composed of a spray anchor net main body frame arranged on the periphery and aplurality of reinforcing ribs arranged in the spray anchor net main body frame at intervals; the multiple reinforcing ribs form reinforcing rib nets, and the inserting rods are evenly inserted in thereinforcing rib nets; the bracket strips are fixed to the two sides of the spray anchor net main body frames correspondingly, and the multiple limiting plates are evenly fixed to the outer side facesof the bracket strips in the axial direction of the bracket strips; and the limiting plates and the bracket strips are mutually perpendicular, and first nut mounting holes for mounting the positioningnuts are formed in the limiting plates in the axial direction of the bracket strips. Through the structure, the spray anchor nets can be prevented from sliding down, the using efficiency of the sprayanchor nets is greatly improved, and the bracket is further conveniently separated to be carried.

The invention discloses an anti-seismic building block for house building. The anti-seismic building block comprises a device body, an anti-seismic device is fixedly installed in the device body, a rubber interlayer is fixedly installed on the outer wall of the anti-seismic device, a steel plate interlayer is fixedly installed on the outer wall of the rubber interlayer, a damping layer is fixedlyinstalled on the outer wall of the steel plate interlayer, and a protective layer is fixedly mounted on the outer wall of the damping layer. By arranging the rubber interlayer, the steel plate interlayer, the damping interlayer and the protective layer, the earthquake feeling and harm caused by an earthquake can be gradually reduced in an anti-seismic process, by arranging the anti-seismic device,vibration caused by the earthquake can be reduced, the device body is protected against damage, it is guaranteed that residents are in a safe state in the earthquake, the building block damage causedby earthquakes is avoided, the safety of the residents is improved, and the afraid of the residents in life is effectively reduced, so that the residents can live normally.