摘要
预制构件连接的界面力学性能是装配式结构研究的关键问题之一。同时为了提高计算效率和反映局部破坏特征,基于内聚力模型建立三维实体单元及纤维梁单元组成的多尺度模型和三维实体单元模型。对两种预制钢筋混凝柱模型进行低周往复加载,将两种模型的数值模拟结果与试验进行对比。结果表明:基于内聚力模型的多尺度模型和三维实体单元模型得到的滞回曲线、破坏现象与试验基本吻合;多尺度模型在计算时间比三维实体单元模型减少近1倍,提高了计算效率,同时也能实现关键部位的精细化分析。为后期研究装配式结构数值模拟提供一定参考。
The interface mechanical properties of prefabricated components are one of the key problems in the study of prefabricated structures.In order to improve the computational efficiency and reflect the local failure characteristics,a multi-scale model composed of three-dimensional solid element and fiber beam element and a three-dimensional solid element model were established based on the cohesive model.The prefabricated concrete column was subjected to low cycle reciprocating loading,and the numerical simulation results of the two models were compared with the test.The results show that the hysteretic curves and failure phenomena obtained by the multi-scale model and the threedimensional solid element model based on the cohesive force model are in good agreement with the experimental results.The calculation time of the multi-scale model is nearly one time less than that of the three-dimensional solid element model,which improves the calculation efficiency and achieves the fine analysis of key parts.It provides a certain reference for the later research on numerical simulation the precast structure.
作者
陈吉光
戴君武
杨永强
CHEN Jiguang;DAI Junwu;YANG Yongqiang(Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China;Changchun University of Architecture and Civil Engineering,Changchun 130607,China)
出处
《建筑结构》
CSCD
北大核心
2022年第S01期1546-1550,共5页
Building Structure
基金
国家自然科学基金项目(52078471)
长春建筑学院科学技术研究项目(CJKJ2020002)
关键词
内聚力模型
三维实体单元模型
多尺度模型
数值模拟
cohesive force model
three-dimensional solid element model
multi-scale model
numerical simulation
