带肋钢壳混凝土空心柱偏压试验研究  

Experimental Study on Eccentric Compression of Ribbed Steel-concrete Hollow Columns

作　　者：李平杰[1,2] 王乐斌 LI Pingjie;WANG Lebin(CCCC Fourth Harbor Engineering Institute Co.,Ltd.,Guangzhou,Guangdong 510230,China;Key Laboratory of Harbor and Marine Structure Durability Technology Ministry of Communications,Guangzhou,Guangdong 510230,China)

机构地区：[1]中交四航工程研究院有限公司,广东广州510230 [2]水工构造物耐久性技术交通行业重点实验室,广东广州510230

出　　处：《施工技术》2018年第19期137-140,共4页Construction Technology

基　　金：广州市珠江科技新星专项资助(201806010162);广东省省级科技计划项目(2017B020221003);广东省交通运输厅科技项目(2016-02-024);国家重点研发计划专项资助(2017YFC0805303)

摘　　要：依托双鱼岛陆岛连接桥项目,对带肋钢壳混凝土空心柱进行偏压试验研究,试验设置了6个试件,以加劲肋数量和空心率作为主要研究参数,开展带肋钢壳混凝土空心柱力学性能的影响参数分析。通过对6个偏压试件的受力分析,研究发现在钢壳内表面布置纵横加劲肋可以增强钢壳与混凝土之间的粘结强度,有效地防止试件发生局部屈曲破坏,并提高试件的整体承载力、刚度和延性;另外,试件的空心率增大,试件的刚度减小、延性降低。The present study focuses on the project of Land island connecting bridge in Shuangyu island. Experiments on ribbed steel-concrete hollow columns subjected to eccentric compression was conducted, six specimens were set up in the experiment. The effects of stiffener number and hollow rate on the structural behavior of ribbed steel-concrete hollow column were investigated. It is found that the arrangement of longitudinal and transverse stiffeners on the inner surface of the steel shell can enhance the contact intensity between the steel shell and concrete. As a result, the local buckling of the steel shell can be prevented effectively; Besides the results reveal that the rigidity of the specimen will decrease with the hollow rate increasing, whilst the ductility will also decrease slightly.

关 键 词：钢壳混凝土空心柱 偏压试验 力学性能 粘结强度 

分 类 号：U973.23[交通运输工程]