剪压复合作用下新型砌体受力性能有限元分析

Finite Element Analysis of Mechanical Behavior of New Block Masonry under Shear-Compression

力学性能是装配式墙板的重要性能之一,不同的构造形式对墙板的力学性能有着不同程度的影响。本文设计了一种方便砌筑的带突肋(抗剪键)的新型砌块,并采用Ansys Workbench有限元软件,对传统砌块砌体、新型砌块砌体、端部加角钢的新型砌块砌体结构在剪压复合作用下的受力性能进行了分析对比,旨在探索一种新型砌块砌体受力体系。研究结果表明:与传统砌体相比,新型砌块砌体和端部加角钢的新型砌块砌体的总变形、等效应力、剪切应力和等效应变都有所增加,但相比于总变形和等效应变而言,等效应力和剪切应力增加显著,说明新型砌块砌体在剪压复合作用下,具有良好的承载能力和较好的变形能力。

Mechanical properties are one of the important properties of fabricated wallboards. Different structural forms have different effects on the mechanical properties of the wallboard. This paper designs a new type of block with protruding ribs (shear-resistant keys) for easy masonry, and uses Ansys Workbench finite element software to build new blocks for traditional block masonry, new block masonry and end angled steel. The mechanical properties of masonry structures under shear compression are analyzed and compared, aiming to explore a new type of block masonry stress system. The results show that the total deformation, equivalent stress, maximum stress and equivalent strain of the new block masonry with new ribbed masonry and end angled steel are increased compared with the traditional masonry. However, compared with the total deformation and equivalent strain, the equivalent stress and maximum stress increase significantly, which indicates that the new block masonry has good bearing capacity and good deformability under shear compression.