基于ANSYS的剪力墙结构抗震性能分析

Seismic Behavior Analysis of Shear Wall Structure Based on ANSYS Software

根据实际工程的要求,需对日本某现有的剪力墙结构做抗震性能分析,考虑到此结构位于地震频繁的日本,且剪力墙布置不规则,质量分布不均匀,在分析时应采用简化了的结构模型,并利用时程分析法计算地震作用.本文选择常见的单轴多质点体系进行模型的简化,突出的是,在处理地基对基础的约束作用时采用了Tajimi模型的结果,在计算机模拟时利用大型通用有限元分析软件ANSYS进行建模、模态分析以及地震时程分析.分析结果需要与日本当地的抗震要求对比,主要对剪力墙的剪应力和基础转角进行验算,藉以评测结构的抗震性能,旨在探索这种诊断类似建筑物抗震性能的思路和方法,为国内抗震研究的进一步完善提供参考价值.

According to the request of actual engineering, shear wall structure in Japan. The structure is located in J the same time, the arrangement of structure is very irregu ismic behavior of a nt earthquakes. At uneven. Above all it is necessary to analyze the se apan which is a country of freque lar and the distribution of mass is these reasons, this paper would use the simplified model and time history analysis methods to analyze the earthquake reaction of the structure. As simplifying the model, this paper selects the single axis and multi- mass elastic system to simulate the structure. In especial, it selects the result of Tajimi earthquake model to simulate the constraint force of the foundation. In the paper, modeling, modal analysis and seismic analysis of the structure are simulated by ANSYS program. In the post-processing, the analysis results should contrast to the Japanese seismic codes about the shear wall structure. The codes require us to check shear stresses of the shear walls and angle of foundation. So it can get the conclusion of the seismic behavior. The purpose of this paper is to explore a new way of seismic behavior about similar structure. Besides, it could provide a ref- erence value to improve seismic research in China.