高强螺栓工字钢连接混凝土梁柱节点的抗震性能研究
Study on Seismic Performance of Concrete Beam and Column Connected by High-strength Bolts and I-steel
李明 1李毅博 1谢可可1
作者信息
- 1. 沈阳建筑大学土木工程学院,辽宁沈阳 110168
- 折叠
摘要
目的 提出一种以高强螺栓工字钢连接混凝土梁柱节点的连接方法,研究该节点抗震性能,为工程设计提供依据.方法 采用ABAQUS有限元软件模拟节点的受力过程,研究后浇混凝土强度、节点区长度、工字钢翼缘厚度等参数对节点抗震性能的影响.结果 与现浇结构相比,新型节点承载能力更高,其屈服荷载和峰值荷载相较于现浇试件的屈服荷载和峰值荷载分别提升2.08倍和2.64倍;提高后浇混凝土强度等级、增加节点区的长度对承载能力影响较小;提高工字钢翼缘厚度、工字钢屈服强度,节点的承载能力提高较明显.结论 采用高强螺栓工字钢连接混凝土梁柱节点的连接结构满足承载力要求,且工字钢翼缘厚度、工字钢屈服强度对结构的承载能力影响较大.
Abstract
A joint of connecting concrete beam and column with high-strength bolts and I-steel is proposed,and its seismic performance was investigated to provide a reference for design.The load-bearing processes of it was analyzed by ABAQUS.How the parameters influence its performance was analyzed,such as the post-cast concrete strength,the length of joint area,the thickness of I-steel flange,ect.Compared with the cast-in-place specimen,the specimen connected with the above manner has higher load-bearing capacity,of which the yield load and peak load are increased by 2.08 and 2.64 times,respectively,compared with those of the cast-in-place specimen.Increasing the strength grade of post-cast concrete or the length of the joint area within a certain range has less effect on the load carrying capacity.Increasing the thickness of the I-steel flange,I-steel yield strength have greater impacts on the load capacity of joint area.The results show that the concrete beam and column connected by high-strength bolts and I-steel meets the requirements of load carrying capacity,and the I-steel flange thickness and I-steel yield strength have relatively large influences on the carrying capacity of it.
关键词
梁柱节点/装配式混凝土结构/有限元模拟/滞回曲线/骨架曲线Key words
joint of beam and column/assembly concrete structure/finite element simulation/hysteresis curve/skeleton curve引用本文复制引用
基金项目
国家自然科学基金项目(51978422)
辽宁省教育厅面上项目(LJKZ0561)
住房和城乡建设部科技攻关项目(2019-K-080)
出版年
2024
NETL
NSTL
万方数据