免拆模薄壁剪力墙抗震性能研究

Aseismatic Study on Thin Shear Wall without Demoulding of Reinforced Concrete

免拆模薄壁剪力墙复合体系是一种能替代传统砖混结构的建筑体系。本文通过室内模型试验及非线性有限元分析对该剪力墙体系的抗震性能进行了研究。对不同厚度的墙体进行了低周反复水平加载试验,观测了墙体的整个破坏过程,分析了墙体的强度、变形和能量特性。在此基础上,利用ANSYS有限元程序对墙板进行非线性有限元分析。试验及分析表明:免拆模薄壁剪力墙体系在墙体单元中使用冷拔钢丝网片作为配筋时,能抑制裂缝的开展,增强墙体的整体性,抗震性能良好,能满足地震区的设计要求。

Thin shear wall without demoulding of reinforced concrete forms a building system which can substitute the traditional brick construction. The aseismatic performance of this shear wall is studied with the indoor model experiment and non-linear FEM analysis. Through the horizontal low cyclic loadings test of different thickness shear wall, the whole destroying process of shear wall is observed, and the properties of strength, deformation and energy are analyzed. At the same time, a non-linear finite element analysis is carried out for a slice of wallboard with ANSYS. The analysis results show that shear wall without demoulding system which takes the cold-draw steel wire as reinforcement can control the development of crack, strengthen the integrity of the wall, and have good aseismitic performence.