建筑结构

2015, v.45;No.398(02) 15-19

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钢管混凝土柱-预应力混凝土梁T形节点抗震性能研究
Seismic performance study on the T-shaped joint of concrete-filled steel tube-prestressed concrete beam

丁阳;刘晨;李宁;李忠献;
Ding Yang;Liu Chen;Li Ning;Li Zhongxian;School of Civil Engineering,Tianjin University;Key Laboratory of Coast Civil Structure and Safety of Ministry of Education,Tianjin University;

摘要(Abstract):

以某地下空间结构中采用的新型钢管混凝土柱-预应力混凝土梁T形节点为研究对象,采取低周往复拟静力试验与数值模拟相结合的研究方法,对节点延性、刚度、承载力及耗能能力进行分析。结果表明:该类节点具有良好的延性、承载力及耗能能力。在大震设计位移需求下,节点核心区剪切变形较小,未发生破坏。有限元分析结果与试验结果吻合较好。
Taking a new kind of T-shaped joint of concrete-filled steel tube-prestressed concrete beam used in an underground structure project as object,quasi-static test and simulation methods were carried out to study the seismic performance of the joint,inculding the ductility,rigidity,bearing capacity and energy dissipation capacity of the joint. The test results indicate that the joint has high ductility,bearing capacity and energy dissipation capacity. Considering the displacement demand in the severe seismic event,the deformation of the joint core area is small and damage does not happen. The results obtained from the finite element analysis agree well with those obtained from the test results.

关键词(KeyWords): 钢管混凝土柱;组合节点;抗震性能;延性;耗能能力
concrete-filled steel tube;composite joint;seismic performance;ductility;energy dissipation capacity

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究计划(973计划)项目(2011CB013600);; 国家自然科学基金(51238007);; 天津市应用基础与前沿技术研究计划(自然科学基金)青年项目(13JCQNJC07200)

作者(Author): 丁阳;刘晨;李宁;李忠献;
Ding Yang;Liu Chen;Li Ning;Li Zhongxian;School of Civil Engineering,Tianjin University;Key Laboratory of Coast Civil Structure and Safety of Ministry of Education,Tianjin University;

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DOI: 10.19701/j.jzjg.2015.02.004

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