Simulation device and simulation method for avoidance distance of building adjacent to strong earthquake ground surface crack zone

Abstract

The invention provides a simulation device and a simulation method for an avoidance distance of a building adjacent to a strong earthquake ground surface rupture zone. The device is characterized in that a bottom plate of a soil body box comprises a fixed steel plate and a movable L-shaped steel plate, the movable L-shaped steel plate comprises a horizontal plate and a vertical plate, the periphery of the horizontal plate is movable and is in flexible connection with adjacent side gaps of the periphery through canvas, and a distance is reserved between the vertical plate and a side wall of thesoil body box; four corners of a bottom surface of the movable L-shaped steel plate are fixedly connected with device upper parts; a counterforce steel plate is fixed at the bottom and is fixedly connected with a lower part of the device and an angle support; the top of an actuator is hinged with an upper portion of a connecting device, the bottom of the actuator is hinged with a lower part of the connecting device; an angle support supports the actuator at a set angle; the actuator jacks and pushes the movable L-shaped steel plate to lift a soil body in a soil body box at a certain angle, and the influence of a real strong earthquake ground surface crack zone on a building is simulated. The device is advantaged in that the real situation is well simulated, so building avoidance distanceanalysis is performed, and reasonable avoidance suggestions are given.

Description

technical field [0001] The invention relates to the technical field of earthquake tests, in particular to a simulation device and a simulation method for avoidance distances of buildings adjacent to strong earthquake surface rupture zones. Background technique [0002] my country is a country with many earthquakes and strong earthquakes, and 33% of the world's continental strong earthquakes occur in my country. A large number of historical earthquake damage examples show that the sudden dislocation of active faults is the main source of earthquakes, and the areas along active faults and buildings are the most serious areas of building damage and casualties. The dislocation of the fault through the ground surface leads to the displacement of the overlying soil layer on the fault and the dislocation and destruction of the buildings on it. This is called the surface rupture effect of strong earthquakes. The surface rupture of strong earthquakes will cause serious disasters, esp...

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Problems solved by technology

[0004] At present, most of the constant gravity model test devices have the following problems: (1) It is difficult to accurately ensure the smooth synchronization of the loading plane, and the experimental accuracy is difficult to guarantee; (2) It is impossible to conveniently adjust the loading angle to realize the test under multiple different angle conditions; (3) ) Most of the test devices lack the building model, and only simulate the failure mechanism of the fault for analysis, while ignoring its interaction with the building

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