摘要
为研究反力墙结构受力性能,文中利用Midas软件建立了反力墙的有限元分析计算模型,采用实体单元模拟混凝土,采用等效荷载法考虑预应力钢筋的作用。考虑计算多种复杂工况,通过查看有限元模型在各工况下分析计算所得的应力云图,分析各工况下反力墙的内力分布规律,对反力墙结构受力特点进行分析,探讨了预应力钢筋对反力墙应力分布的影响和裂缝控制的作用,验证了建模方法的有效性。有限元计算结果表明反力墙墙体底部受拉侧是其关键受力部位,模型对比表明预应力钢筋的应用可以有效避免关键部位拉应力的产生,使反力墙能够满足裂缝控制的要求。
To study mechanical properties of reaction wall structure, a finite element model of reaction wall structure is established and analyzed by Midas software. Concrete is simulated by solid elements, and prestressed reinforcement is considered by applying equivalent load. Stress distribution in the finite element model of reaction wall structure under different complex working conditions is acquired. By analyzing the stress distribution, the influence of prestressed reinforcement on the reaction wall and the effectiveness of the model was verified by the crack control results. The tension side of the bottom of the reaction wall is the critical part under working conditions. By using prestressed reinforcement, the tensile stress of the critical part can be avoided and the crack control criterion can be satisfied.
作者
张尹
杨嘉胤
ZHANG Yin;YANG Jiayin(Zhejiang College of Construction,Hangzhou 311231,China;The Architectural Design&Research Institute of Zhejiang University Co.,Ltd.,Hangzhou 310028,China)
出处
《低温建筑技术》
2022年第8期67-70,共4页
Low Temperature Architecture Technology
关键词
反力墙
有限元模型
预应力钢筋
reaction wall
finite element model
prestressed reinforcement
