Method for simulating a frame-shear structure striding over ground fissures under the high-intensity earthquakes in Xi’an, China

Based on the local phenomenon that earthquakes occur more frequently in country areas, this thesis aims to analyze a frame-shear building striding over the ground fissures in Xi’an with software SAP2000. Firstly, initial displacement that imitated the value of ground fissures activity have been put on the structure, and quantitative analysis was conducted on the adverse effect of ground fissure to locate dangerous location, position and amount of plastic hinges on the structure. Secondly, vertical settlement and horizontal tension of ground fissures were applied to the structural bearings of different SAP2000 finite models. The finite element models, without taking preventions and after setting settlement joint conduct the dynamic nonlinear time-history analysis under high-intensity multidimensional and multi-point seismic with consistent excitation seismic action. It reveals a series of research results, such as the developing trend of plastic hinges, the principal compressive stress of shear wall concrete and the curve of elastoplastic interlayer displacement angle.