摘要
以北京新机场航站楼C形钢柱典型复杂钢管相贯节点为研究对象,设计了9个足尺节点,对其进行空间静力加载试验,研究不同加劲肋设置、钢材强度和加载方式对节点受力性能的影响。结果表明:未设置加劲肋的节点承载力较低,无法满足结构安全需求;采用Q345C钢材设置加劲肋的节点在设计荷载作用下有部分区域会进入塑性工作状态;采用Q460GJC钢材设置加劲肋的节点能够在1.4倍设计荷载作用下保持完全弹性工作状态;不同的加载方式仅对未设置加劲肋的节点影响较大,对设置加劲肋的节点影响较小。在试验研究基础上,对节点破坏模式和承载能力进行了研究,对加劲肋的设置进行优化,以设置三道加劲肋为优。
Under the project of ‘typical complex space joints of Beijing New Airport Terminal C type steel column’, space static loading tests were conducted on nine full-scale complex tubular joints to examine the effects of stiffening ribs, steel grades, and loading modes. The results show that the ultimate bearing capacity of the joints without stiffening ribs is insufficient;Q345 C steel joints with stiffening ribs experience earlier plasticity when subjected to standard load condition;Q460 GJC steel joints with stiffening ribs can fully stay elastic under 1.4 times the standard load level. Different loading modes affect more on the joints without stiffening ribs, and have less influence on the remaining specimens. Based on the test results, the failure modes and ultimate bearing capacity of the joints were investigated and the arrangement of the stiffening ribs was optimized, with three stiffening ribs being the most suitable solution.
作者
张爱林
邵迪楠
张艳霞
束伟农
朱忠义
李振兴
ZHANG Ailin;SHAO Dinan;ZHANG Yanxia;SHU Weinong;ZHU Zhongyi;LI Zhenxing(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture, Beijing 100044,China;Beijing Advanced Innovation Center for Future Urban Design,Beijing University of Civil Engineering and Architecture, Beijing 100044,China;Beijing Institute of Architectural Design,Beijing 100045,China)
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2019年第3期210-220,共11页
Journal of Building Structures
基金
北京市科技计划(Z161100001216010)
长江学者和创新团队发展计划(IRT_17R06)
关键词
C形柱
钢管相贯节点
静力试验
有限元分析
受力性能
C type column
tubular joint
static test
finite element analysis
mechanical performance
