基于ANSYS的不同截面形式带暗柱短肢剪力墙非线性分析

摘要

以五组钢筋用量和混凝土用量相同但截面形式不同的带暗柱钢筋混凝土短肢剪力墙结构非线性分析为研究背景,利用ANSYS分别对带暗柱的十字型、T型、L型、]型和Z型五种不同截面形式的钢筋混凝土短肢剪力墙进行单调荷载作用下的非线性分析,研究了不同截面形式的带暗柱短肢剪力墙的承载力、变形能力、刚度、延性、耗能等.分析结果表明,在钢筋用量和混凝土用量相同的情况下,不同截面形式的短肢剪力墙的性能不相同,其中]型和Z型的承载能力相对最好,十字型的延性和变形能力相对最强.在结构设计中,应根据实际需要选取合适截面形式的短肢剪力墙,使结构刚柔适中,经济合理.%Five short-pier reinforced-concrete shear wall specimens with embedded column which have same consumption of steel and concrete,but different cross sections are used in this paper. Those five specimens with cross-shaped,T-shaped,L-shaped, ]-shaped and Z-shaped cross sections are analyzed under monotonic load by the nonlinear finite element analysis with the software ANSYS. Then compared load capacity, deformation capacity, stiffness, ductility and energy dissipation capacity of the different cross sections of short-pier RC shear wall with embedded column. The analysis results show that the short-pier shear walls,which with the same consumption of steel and concrete, have different performances with the variation of cross section shape, in which ] -shaped and Z-shaped specimens have the best load capacity, cross-shaped specimen has the best ductility and deformation capacity. In order to make the structure have moderate stiffness and flexibility, and economical efficiency, it is necessary, in structural design, to choose the proper shape of cross section of the short-pier RC shear wall with embedded column.