建筑结构学报2017，Vol.38Issue(5)：61-68,8.DOI:10.14006/j.jzjgxb.2017.05.008
方钢管混凝土节点核心区剪切试验及其数值模拟
Shear tests and finite element simulation for panel zone behavior of square concrete-filled tubes
摘要
Abstract
In order to analyze panel zone behavior of square concrete-filled tubes,direct shear tests for panel zone were designed based on analysis results of actual beam-column connections.This simnple test method would lead to clear panel zone failure and reflect its main mechanical features.By changing parameters of loading paths,material properties,panel zone shapes and loading directions,13 specimens were fabricated and tested with failure modes and load-displacement curves acquired.The influences of different parameters were investigated.A fine finite element model with expansibility was proposed based on the test results.Ideal elasto-plastic model was adopted to simulate steel behavior.The fixed angle smeared crack model with modified shear retention factor was adopted to simulate infilling concrete behavior.Calculation showed a good consistency with test results and could be applied in non-linear analysis of joints in complex composite structures.关键词
方钢管混凝土/节点核心区/剪切试验/精细有限元模型Key words
square concrete-filled tube/panel zone/shear test/fine finite element model分类
建筑与水利引用本文复制引用
程曦,聂鑫,樊健生..方钢管混凝土节点核心区剪切试验及其数值模拟[J].建筑结构学报,2017,38(5):61-68,8.基金项目
国家自然科学基金项目(51222810). （51222810）
