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单元体幕墙公母立柱协同工作性能研究*
赵宇1,惠存2,3,王斌2,王元清3,陶伟2
摘 要
(1 西南交通大学峨眉校区土木工程系,峨眉山 614202; 2 江河创建集团股份有限公司,北京 101300; 3 清华大学土木工程系,北京 100084)

[摘要]为研究单元体幕墙公母立柱的协同工作性能,分别对正、负风压作用下的单根公立柱、单根母立柱、考虑玻璃约束作用与否和带挂钩与否情况下组合立柱进行了有限元数值模拟,研究其变形和屈曲性能,并对典型工况下的模型进行了试验验证。结果表明,在风压作用下,单根公立柱或单根母立柱的变形较大,一阶屈曲特征值较小;考虑公母立柱协同工作性能,可显著降低立柱变形,提高其一阶屈曲特征值和承载力;公母立柱之间的挂钩在正风压作用下可起到显著作用,但在负风压作用下几乎不起作用;考虑玻璃对组合立柱的约束作用,在负风压作用下立柱幕墙平面内变形显著降低,幕墙平面外变形也有较大幅度的减小,但在正风压作用下,玻璃对组合立柱的约束作用对幕墙平面外变形影响较小;试验结果与有限元分析结果较为吻合,从而验证了模型的合理性和正确性。
[关键词]单元体幕墙; 铝合金立柱; 协同工作性能; 变形性能; 屈曲特征值
中图分类号:TU395      文献标识码:A      文章编号:1002-848X(2015)15-0022-05

Study on interaction work performance of male and female columns of unit curtain walls
Zhao Yu1, Hui Cun2,3, Wang Bin2, Wang Yuanqing3, Tao Wei2
(1 Department of Civil Engineering, Emei Campus of Southwest Jiaotong University, Emeishan 614202, China; 2 Jangho Group Company Limited, Beijing 101300, China; 3 Department of Civil Engineering, Tsinghua University, Beijing 100084, China)
 
Abstract:In order to study the interaction work performance of male and female columns of unit curtain wall, the finite element numerical simulation of one single male column, one single female column and composite columns with considering the glass constraint or not and with a hook or not were carried out to study their deformation and buckling performance under positive and negative wind pressure and the experiments of models under typical working condition also were done. The results show that, the deformations of the single male and female columns are great and the buckling eigenvalues are little under wind pressure.Considering the interaction work performance of male and female columns can reduce the deformation of the column greatly and improve the buckling eigenvalue and bearing capacity significantly. The hook between the male and female columns can play a significant role under positive wind pressure, but almost no effect under negative wind pressure. Considering the restraint effect of glass on out of plane deformation of aluminum alloy column can reduce the in plane deformation significantly and also reduce out of plane deformation under negative wind pressure greatly, and the restraint effect of glass on composite column has little influence on the out of plane deformation under positive wind pressure. The experiment results are fairly consistent with the finite element analysis results, which can vertify the rationality and validity of the models.
Keywords:unit curtain wall; aluminum alloy column; interaction work performance; deformation performance; buckling eigenvalue

*中国博士后科学基金项目(2015M570998),北京市博士后工作经费资助项目(2015ZZ-150)。
作者简介:赵宇,Email: zhaoyu@163.com
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