Abstract:

In order to reveal the seismic performances of shear walls with different structures, the frame-supported shear wall structure of the Garden Hotel in Guangzhou was used as the research object to perform low-cyclic loading tests in different reinforcement and construction.conditions. Then, the shear-wall nonlinear analysis program SWNA was secondarily developed based on OpenSEES and MVLEM, and was used to numerically simulate the low-cyclic loading plastic of shear walls. The results indicate that the proposed numerical method macroscopically simulate the elastic- behaviors of shear walls in terms of the shifting of natural axis, the shear deformation, the local plastic state and the collapse mechanism, and that MVLEM is suitable for the global elastic-plastic analysis and the seismic performance assessment of high-rise buildings because it saves the calculation time cost due to its low consumption of degree of freedom for the simulation of shear wails.

Key words: shear wall, seismic performance, low-cyclic loading test, macroscopic model, elastic-plastic analysis