Shear strength of stiffened steel shear walls with considering the gravity load effect through a three-segment distribution
Shear strength of stiffened steel shear walls with considering the gravity load effect through a three-segment distribution
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通过三段分布考虑重力荷载效应的加筋钢剪力墙的抗剪强度
DOI：
10.1016/j.istruc.2020.11.018
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发表时间：
2021-02
期刊：
影响因子：
4.1
通讯作者：
Nawawi Chouw
中科院分区：
文献类型：
--
作者：
李杰;吕嘉琪;Vinu Sivakumar;陈宇;黄鑫;吕杨;Nawawi Chouw
前人的研究表明，重力荷载会显著降低钢剪力墙的抗剪强度，特别是在重压荷载作用下具有较高屈曲应力的粗壮剪力墙。然而，尽管加筋SSW具有较高的压缩屈曲应力，但对其进行的研究却寥寥无几。本研究旨在通过理论分析和数字评估来缩小知识差距。通过竖向和水平向加劲肋将加劲SSW划分为多个子墙。对于每个子墙，在自重荷载作用下，提出了三段竖向应力分布。通过提出的三段竖向应力分布，考虑自重荷载的影响，通过Von Mose屈服准则确定了各子墙斜拉条的张拉场应力。墙体的抗剪强度按各子墙的抗剪强度之和计算，边界框架的抗剪强度按墙体-框架模型确定。为了对所提出的方法进行评估，利用有限元软件Ansys/LS-DYNA建立了一个经过实验验证的有限元模型。计算结果表明，该方法能够较准确地考虑不同加劲肋布置形式的加筋SSW的自重荷载效应。
Former investigations have shown that the gravity load will significantly reduce the shear strength of the steel shear walls (SSW), especially in the case of a stocky wall that has high buckling stress under heavy compression load. However, only a few have been carried out on stiffened SSW, even though it has high compression buckling stress. The present study aims to narrow the knowledge gap by conducting a theoretical analysis and a numerical evaluation. The stiffened SSW is divided into several sub-walls by vertical and horizontal stiffeners. For each sub-wall, a three-segment vertical stress distribution under the gravity load is proposed. The tension field stress of inclination tension strips of each sub-wall, with considering the effect of the gravity load through the proposed three-segment vertical stress distribution, is determined through the Von Mises yield criterion. Shear strength of the wall is calculated as the sum of the shear strength of each sub-wall, while that of the boundary frame is determined according to a wall-frame model. To evaluate the proposed approach, an experimentally verified finite element model using the software ANSYS/LS-DYNA is developed. The results show that the proposed approach is able to accurately consider the gravity load effect of the stiffened SSWs of different stiffeners configurations.
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相邻框架柱预压钢板剪力墙剪切位移图
影响因子：
2.4
作者：
吕杨;李玲;吴迪;陈宇;李忠献;Nawawi Chouw
通讯作者：
Nawawi Chouw
DOI：
10.1061/(asce)0733-9445(2007)133:3(378
发表时间：
2007-03
期刊：
Journal of Structural Engineering-asce
影响因子：
--
作者：
Hong-Gun Park;JaeHyuk Kwack;S. Jeon;Wontae Kim;In-Rak Choi
通讯作者：
Hong-Gun Park;JaeHyuk Kwack;S. Jeon;Wontae Kim;In-Rak Choi
DOI：
10.1061/(asce)0733-9445(2008)134:3(364
发表时间：
2008-03
期刊：
Journal of Structural Engineering-asce
影响因子：
--
作者：
B. Qu;M. Bruneau;Chih-han Lin;K. Tsai
通讯作者：
B. Qu;M. Bruneau;Chih-han Lin;K. Tsai
影响因子：
4.1
作者：
S. Sabouri-Ghomi;Seyed Sajjadi
通讯作者：
S. Sabouri-Ghomi;Seyed Sajjadi
影响因子：
4.1
作者：
M. Alinia;R. S. Shirazi
通讯作者：
M. Alinia;R. S. Shirazi