方钢管混凝土柱-H 型钢梁全螺栓连接节点抗震试验及有限元分析

doi:10.12066/j.issn.1007-2861.2130

上海大学学报(自然科学版) ›› 2021, Vol. 27 ›› Issue (2): 347-359.doi: 10.12066/j.issn.1007-2861.2130

方钢管混凝土柱-H 型钢梁全螺栓连接节点抗震试验及有限元分析

陈靖远, 杨锋(), 丁鑫标, 王培成

上海大学土木工程系, 上海 200444

收稿日期:2019-01-31 出版日期:2021-04-30 发布日期:2021-04-27
通讯作者: 杨锋 E-mail:fyang525@sina.com
作者简介:杨锋(1963—), 男, 副教授, 研究方向为结构工程. E-mail:fyang525@sina.com
基金资助:
上海市科委技术标准专项基金资助项目(13DZ0501700)

Seismic test and finite element analysis of bolted joints connecting concrete-filled square steel tubular column and H-type steel beam

CHEN Jingyuan, YANG Feng(), DING Xinbiao, WANG Peicheng

Department of Civil Engineering, Shanghai University, Shanghai 200444, China

Received:2019-01-31 Online:2021-04-30 Published:2021-04-27
Contact: YANG Feng E-mail:fyang525@sina.com

摘要/Abstract

摘要：

分别按照中、美两国规范中不同的加载制度, 对 3 根方钢管混凝土柱-H 型钢梁全螺栓连接节点试件进行反复低周荷载试验. 结果表明, 此类节点的滞回曲线、骨架曲线与焊接节点相比具有明显的特征. 由于隔板翼缘相对滑移, 滞回曲线均出现水平段, 呈"捏缩形状". 对比试验结果也发现: 在全螺栓连接节点的试验中, 由于滑移段的存在, 按照位移角控制的加载制度的试验数据更为完整, 优于按"两阶段"控制的加载制度. 利用 ABAQUS 有限元软件, 对反复低周荷载作用下方钢管混凝土与钢梁全螺栓连接节点的受力性能进行计算与分析, 验证了试验结果的准确性, 并通过刚度退化、延性指标及总承载力退化系数对节点抗震性能进行了分析. 同时也提出了因存在隔板翼缘相对滑移, 在评判过程中对这些指标加以修正的建议.

关键词: 方钢管混凝土柱, 全螺栓连接, 有限元计算, 反复低周荷载, 抗震性能分析

Abstract:

Three concrete-filled square steel tubular column and H-type steel beam for two-sided all-bolted connections were fabricated according to the specifications of two countries, China and America. Repeated low cyclic loading tests were conducted on different loading systems. The results showed that the hysteretic loop curves and skeleton curves of the welded joint had obvious characteristics because of the relative slip in the clapboard flange, and the hysteretic loop curve in the horizontal section showed a pinch shrink shape. The test results indicated that the loading system controlled by the displacement angle was more complete and better than the loading system controlled by "two stages" owing to the existence of the slip section in tests on all the bolted joints. At the same time, using the finite element software, ABAQUS, for repeated low cyclic loads on the steel beam and concrete-filled steel tube, the stress performance of the bolt connection node was calculated and analysed. These results verified the accuracy of the test results. Further, the stiffness degradation, ductility performance, and overall strength degradation coefficient of the seismic performance of the nodes were analysed. In addition, because of the existence of the relative slip in the plate flange, a revised evaluation of these indicators was proposed.

Key words: concrete-filled square steel tubular column, bolted connection, finite element calculation, repeated low cyclic load, analysis of seismic performance

中图分类号:

TU398

陈靖远, 杨锋, 丁鑫标, 王培成. 方钢管混凝土柱-H 型钢梁全螺栓连接节点抗震试验及有限元分析[J]. 上海大学学报(自然科学版), 2021, 27(2): 347-359.

CHEN Jingyuan, YANG Feng, DING Xinbiao, WANG Peicheng. Seismic test and finite element analysis of bolted joints connecting concrete-filled square steel tubular column and H-type steel beam[J]. Journal of Shanghai University（Natural Science Edition）, 2021, 27(2): 347-359.

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方钢管混凝土柱-H 型钢梁全螺栓连接节点抗震试验及有限元分析

Seismic test and finite element analysis of bolted joints connecting concrete-filled square steel tubular column and H-type steel beam

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