Behavior of thin-walled dodecagonal section double skin concrete-filled steel tubes under bending
Behavior of thin-walled dodecagonal section double skin concrete-filled steel tubes under bending
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DOI：
10.1016/j.tws.2015.10.002
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发表时间：
2016-01-01
影响因子：
6.4
通讯作者：
Jin, Wei-liang
中科院分区：
文献类型：
--
作者：
Chen, Ju;Wang, Jun;Jin, Wei-liang
本文对薄壁十二角形截面双层钢管混凝土的受弯性能进行了研究。进行了试验研究和有限元分析。共测试7个试件，梁长2000 mm。外层钢管的宽厚比从75到133不等。得到了试件的荷载-位移曲线、破坏模式和极限承载力。建立了薄壁十二角形截面双壁钢管混凝土受弯有限元模型。对有限元分析结果与试验结果进行了验证，并利用验证后的模型进行了参数研究。此外，还评估了韩氏方法、Uenaka方法和所提出的方法对薄壁圆截面双壁钢管混凝土受弯问题的适用性。(C)2015爱思唯尔有限公司。保留所有权利。
The behavior of thin-walled dodecagonal section double skin concrete-filled steel tubes under bending was studied in this paper. Both experimental investigation and finite element analysis (FEA) were carried out. A total of 7 specimens were tested with the beam length of 2000 mm. The width to thickness ratio of the outer steel tube ranged from 75 to 133. The load-displacement curves, failure mode and ultimate capacity of test specimens were obtained. A finite element model was developed for the thin-walled dodecagonal section double skin concrete-filled steel tube subjected to bending. The FEA results were verified against the test results and parametric study was conducted using the verified model. In addition, the suitability of Han's method, Uenaka's method and proposed method for thin-walled circular section double skin concrete-filled steel tubes subjected to bending was also evaluated. (C) 2015 Elsevier Ltd. All rights reserved.