圆中空夹层钢管自密实混凝土构件抗弯承载力试验研究及分析  

Research and Analysis on the Bending Capacity of Self-compacting Concrete-filled Double Skin Steel Tube

作　　者：韩风霞[1] 刘清[1] 刘耘[1] 何原野[1] 张栋[1] 

机构地区：[1]新疆大学建筑工程学院,新疆乌鲁木齐830047

出　　处：《施工技术》2014年第15期44-50,共7页Construction Technology

基　　金：国家自然科学基金(51368057);新疆大学博士科研启动基金项目(BS120132)

摘　　要：为研究浇筑自密实混凝土的圆中空夹层钢管混凝土试件的抗弯承载力及其影响因素,进行了9个圆中空夹层钢管自密实混凝土试件、1个实心钢管混凝土试件和1个空心钢管试件的试验,并进行了数值模拟分析。首先,通过对比不同空心率试件的试验与理论计算结果,指出了空心率对承载力的影响规律。然后,进行数值模拟,并与试验结果进行了对比,分析了两者之间的差异性。最后,根据对比结果,针对文献中提出的抗弯承载力系数进行了修正,并进行了验证分析。结果表明,提出的抗弯承载力修正系数公式是可行的。In order to reveal the bending capacity and the influence of self-compacting concrete-filled double skin steel tube,the nine specimens for self-compacting concrete-filled double skin steel tube,one specimen for full-filed and one for hollow tube were tested and simulated numerically. Firstly,the compared results of different hollow ratio test specimens showed the effects of hollow ratio to the bending capacity of self-compacting concrete-filled double skin steel tube. Secondly,the difference of the results from the tests and numerical simulation were discussed. Finally,the proposed formulas of correction coefficient were verified by the comparison of the tests and the finite element simulation. The results show that the proposed formulas are workable.

关 键 词：混凝土 圆中空夹层钢管 自密实混凝土 抗弯承载力 修正 

分 类 号：TU318.03[建筑科学—结构工程]