Study of an Optimum Design Method for Links
Study of an Optimum Design Method for Links
复制标题
一种链路优化设计方法的研究
DOI：
10.2174/1874149501408010335
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发表时间：
2014-12
期刊：
影响因子：
--
通讯作者：
王湛
中科院分区：
文献类型：
--
作者：
胡淑军;王湛
在强烈地震作用下，偏心支撑框架可能经历较大的非弹性变形，而非弹性作用主要局限于延性连杆。为了研究杆件的合理设计方法，根据Q235钢的材料特性，对70个杆件进行了不同法兰宽厚比和长度对杆件的影响分析，设计了50个杆件，研究了加强筋间距、加强筋厚度和侧边位置对杆件的影响，设计了36个杆件考虑轴向载荷的影响。利用循环加载试验数据验证了有限元模型的准确性。数值分析结果表明，短、长连接的法兰宽厚比可放宽至10 235/fy，加劲肋只能在一侧布置。但中间环节的法兰宽厚比限制在8 235/fy以内，考虑到性能不稳定，应在两侧加劲。加劲肋厚度对不同长度连杆的性能影响不显著。与短连杆不同，中间和长连杆容易受到轴向力的影响。在此基础上，通过对主要影响因素的分析，提出了优化设计方法，使杆件在高荷载水平下具有良好的延性和刚度。
Under severe earthquakes, eccentrically braced frames might experience large inelastic deformations, and the inelastic action is restricted primarily to the ductile links. In order to study the reasonable design method for links, seventy analyses of links are conducted to investigate the effect of different flange width-thickness ratio and length, fifty links are also designed to study the influence of stiffeners spacing, stiffeners thickness and placing on side(s), and thirty-six links are designed to consider the effect of axial loads, which are all based on the material properties of Q235 steel. The accuracy of finite element models is verified using the experimental data during cyclic loading. Numerical analysis results show that the flange width-thickness ratio of short and long links can be relaxed to 10 235/fy , and stiffeners can only be placed on one side. However, the flange width-thickness ratio of intermediate links is limited to 8 235/fy , and stiffeners should be placed on both sides due to the unstable behavior. Stiffener thickness has no significant influence on the performance of links with varying length. Unlike short links, intermediate and long links are susceptible to the axial forces. Then an optimum design method is proposed by analyzing the main influencing factors, so links can have good ductility and stiffness at high load levels.
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影响因子：
4.1
作者：
T. Okazaki;M. Engelhardt
通讯作者：
T. Okazaki;M. Engelhardt
DOI：
10.1061/(asce)0733-9445(2005)131:10(1546
发表时间：
2005-10
期刊：
Journal of Structural Engineering-asce
影响因子：
--
作者：
P. Richards;C. Uang
通讯作者：
P. Richards;C. Uang
DOI：
10.1002/tal.740
发表时间：
2011-12
期刊：
The Structural Design of Tall and Special Buildings
影响因子：
--
作者：
T. Sabol;D. E. Nishi
通讯作者：
T. Sabol;D. E. Nishi
DOI：
10.1002/tal.4320020105
发表时间：
1993-03
期刊：
Structural Design of Tall Buildings
影响因子：
--
作者：
K. Tsai;Y. F. Yang;J. Lin
通讯作者：
K. Tsai;Y. F. Yang;J. Lin
DOI：
10.1061/(asce)0733-9445(2006)132:8(1183
发表时间：
2006-08
期刊：
Journal of Structural Engineering-asce
影响因子：
--
作者：
P. Richards;C. Uang
通讯作者：
P. Richards;C. Uang