预应力反力墙的ABAQUS有限元分析

Finite Element Analysis of Prestressed Reaction Wall by ABAQUS

文章采用有限元软件ABAQUS对某水工试验反力墙试验台整体模型及单片反力墙模型在不利荷载工况下的力学性能进行模拟,并研究了不同预应力及非预应力钢筋配筋率下墙体的开裂性能。研究表明:有限元分析能较好的模拟反力墙的受力、开裂过程;随着非预应力筋或预应力钢筋配筋率的减少,开裂应变逐渐集中在墙片受拉侧,刚度和开裂荷载均有所降低;预应力钢筋变化对墙体开裂性能影响较大。

This paper simulates the mechanical properties of whole reaction testbed and monolithic wall of hydraulic test under unfavorable load case, and analyzes the cracking performance of reaction wall in different rates of non-prestressed reinforcement or prestressed reinforcement. The research indicates that cracking process of the reaction wall can be simulated by finite element analysis,and the cracking load and stiffness of reaction wall reduce with the decreasing of non-prestressed reinforcement or prestressed reinforcement. And the prestressed reinforcement have more influence than non-prestressed reinforcement on the cracking performance.