内置工字形碳纤维增强复材型材方钢管混凝土柱-钢梁外环盖板节点抗震性能有限元分析

李帼昌; 姬达仓; 邱增美

doi:10.13204/j.gyjzG21090615

内置工字形碳纤维增强复材型材方钢管混凝土柱-钢梁外环盖板节点抗震性能有限元分析

doi: 10.13204/j.gyjzG21090615

沈阳建筑大学土木工程学院, 沈阳 110168

基金项目:

国家自然科学基金重点项目(51938009)

详细信息

作者简介:
李帼昌,女,1964年出生,博士,教授。电子信箱:liguochang0604@sina.com

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出版历程
- 收稿日期: 2021-09-06
- 网络出版日期: 2023-02-06

Finite Element Analysis of Seismic Performance of Outer-Ring Cover Plate Joints Between Concrete-Filled Square Steel Tubular Column with Built-in I-Shaped CFRP and Steel Beam

School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China

摘要

摘要: 为解决外环板节点施工困难、装配化程度低等问题,提出一种新型外环盖板式梁柱节点。采用有限元分析软件ABAQUS对其进行数值模拟,研究典型试件的传力机理、屈服机制、破坏模态、刚度和耗能能力。在此基础上,深入分析盖板尺寸、钢管径厚比和CFRP配置率对节点抗震性能的影响。结果表明:节点屈服始于塑性铰区钢梁翼缘中部,经由翼缘扩展至腹板,继而全截面屈服。节点的极限转角为0.053rad,其转动性能良好,表现为半刚性连接。增加盖板尺寸和钢管径厚比均可提高节点承载力,其最优配比:盖板宽度为0.7~0.9倍钢梁高度;盖板厚度为0.7~1.2倍钢梁翼缘厚度;钢管径厚比取30~50;CFRP配置率满足柱自身承载能力和变形能力即可。
- 装配式节点 /
- 外环盖板 /
- 工字形CFRP /
- 屈服机制 /
- 抗震性能
Abstract: Considering the difficulty of construction and low assembly degree of ring plate outer joint, a new type of ring plate beam column outer joint was proposed. The force transfer mechanism, yield mechanism, failure mode, stiffness and energy dissipation capacity of typical specimens were numerically simulated by using the finite element analysis software ABAQUS. Based on the above research, the effects of cover plate size, aspect ratio of tube and CFRP configuration rate on the seismic performance of the joint were deeply analyzed. The results showed that the yield of the joint began in the middle of the flange of the steel beam in the plastic hinge area, extended to the web through the flange, and then yielded in the whole section. The ultimate rotation angle of the joint was 0.053 rad, and its rotation performance was good, which showed semi-rigid connection. The bearing capacity of the joint could be enhanced by adding the measurement of the cover plate and the aspect ratio of tube. The most suitable size should be: the width of the cover plate should be 0.7~0.9 times the height of the steel beam; the thickness of cover plate should be 0.7~1.2 times the thickness of steel beam flange; the ratio of aspect ratio of tube should be 30~50; the CFRP configuration rate could satisfy the bearing capacity and deformation capacity of the column itself.
- assembly joint /
- outer-ring cover plate /
- I-shaped CFRP /
- yield mechanism /
- seismic performance

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