带自复位柱脚节点钢框架静力性能研究
Research on Static Properties of Steel Frames with Self-Centering Column Base Joints
姜子钦 1陈攀琪 2王帅 2王伟 3王立军4
作者信息
- 1. 北京工业大学建筑工程学院,北京 100124;北京工业大学,北京市高层和大跨度预应力钢结构工程技术研究中心,北京 100124
- 2. 北京工业大学建筑工程学院,北京 100124
- 3. 同济大学土木工程防灾减灾全国重点实验室,上海 200092
- 4. 华诚博远工程技术集团有限公司,北京 100043
- 折叠
摘要
为解决传统装配式钢框架结构残余变形较大,无法有效实现结构复位的问题,提出了一种带有自复位柱脚节点的新型钢框架结构,通过有限元软件ABAQUS对8个框架模型进行了静力分析,系统研究了狗骨削弱盖板厚度、初始索力、轴压比等参数对该新型框架承载性能的影响规律.结果表明:新型自复位框架与传统刚接柱脚钢框架相比,承载力相差在5％以内,残余变形减少50％以上.新型钢框架的承载能力主要受狗骨削弱盖板厚度、初始索力和柱顶轴力三部分影响,通过合理设置各参数,可以实现不同参数组合下,框架达到相同承载能力与复位效果.
Abstract
In order to solve the problem that traditional prefabricated steel frame structures have large resid-ual deformation and cannot be effectively self-centering,a new steel frame structure with self-centering col-umn base joints was proposed.The static analysis of 8 frame models was carried out by the finite element software ABAQUS.The influence of the thickness of the cover plate weakened by dog bone,the initial ca-ble force and the axial compression ratio on the bearing performance of the new frame were systematically studied.The results showed that the bearing capacity of the new self-centering frame was less than 5％and the residual deformation was reduced by more than 50％compared with the traditional steel frame with rigid column base joints.The bearing capacity of the new steel frame was mainly affected by the thickness of the cover plate weakened by dog bone,the initial cable force,and the axial force at the top of the column.The frame could achieve the same bearing capacity and self-centering effect under different parameter combina-tions.
关键词
装配式钢框架/自复位/柱脚节点/静力性能/有限元模拟Key words
prefabricated steel frame/self-centering/column base joint/static property/finite element analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据