Progressive collapse resistance-based strut configurations of beam string structure and its numerical verification

被引：0

作者：

Jiang Y. ^{[1
]}

Zhou H. ^{[1
]}

Kang W. ^{[1
]}

Zheng J. ^{[1
]}

机构：

[1] Hunan Provincial Key Laboratory of Green Construction and Maintenance of Bridges and Buildings, Changsha University of Science and Technology, Changsha

来源：

Jianzhu Jiegou Xuebao/Journal of Building Structures | 2021年 / 42卷

关键词：

Alternate load path method; Beam string structure; Bearing capacity; Cross strut configuration; Progressive collapse;

D O I：

10.14006/j.jzjgxb.2021.S1.0021

中图分类号：

学科分类号：

摘要：

Due to the low redundancy and incidental progressive collapse for traditional beam string structure (TBSS), the strut configuration was improved by introducing the alternate load path method, and a beam string structure system with novel strut configuration was proposed. A benchmark model of the beam string structure with the novel strut configuration was established based on the structural scenario of a stadium. Several beam string structure models with novel strut configuration were obtained through optimizing the crossing angle of strut and its location of crossing joints, and the bearing capacity and progressive collapse performance were analyzed with the finite element method.The results show that when a proper design is applied, the stiffness and the bearing capacity between the novel structure and the traditional one are almost the same, and the bearing capacity is dependent of the location of strut crossings for the novel structure. For the failure of intermediate cable, the lower strut can act as an alternate of the failed cable to provide an effective force transferring path for the novel structure, and the progressive collapse resistance performance is better for the novel structure with a larger angle of the crossing struts. For the failure of the side cable, the vertical displacement of the novel structure is largely reduced compared with that of the traditional one, and the novel structure can achieve an even better resistance of progressive collapse. © 2021, Editorial Office of Journal of Building Structures. All right reserved.

引用

页码：186 / 194

页数：8

共 20 条

[1] Code for anti-collapse design of building structures: CECS 392:2014, (2015)
[2] PEARSON C, DELATTE N., Ronan point apartment tower collapse and its effect on building codes, Journal of Performance of Constructed Facilities, 19, 2, pp. 172-177, (2005)
[3] ADAMA J M, PARISIB F, SAGASETAC J, Et al., Research and practice on progressive collapse and robustness of building structures in the 21st century, Engineering Structures, 173, pp. 122-149, (2018)
[4] ZHAO Xianzhong, YAN Shen, CHEN Yiyi, A review on progressive collapse study for large-span space structures, Journal of Building Structures, 34, 4, pp. 1-14, (2013)
[5] BAI Zhengxian, LIU Xiliang, LI Yisheng, A new type of spatial structure:beam string structure, Spatial Structures, 7, 2, pp. 33-38, (2001)
[6] JIANG Xiaofeng, Study on mechanism analysis and resistant design of progressive collapse for truss/beam type structural systems in large-span, pp. 99-155, (2008)
[7] HU Shuailing, Progressive collapse analysis and anti-collapse design of beam string structure, pp. 1-154, (2010)
[8] CAI Jianguo, ZHU Yifeng, FENG Jian, Et al., Influence of loss of struts on progressive collapse resistance performance of string structures, Journal of Building Structures, 36, 6, pp. 82-89, (2015)
[9] CAI Jianguo, WANG Fenglan, FENG Jian, Et al., Progressive collapse analysis of cable-arch structures of the New Guangzhou Railway Station, Journal of Building Structures, 31, 7, pp. 103-109, (2010)
[10] ZHU Yifeng, FENG Jian, CAI Jianguo, Et al., Analysis on progressive collapse resistance of truss string structure of Meijiang Exhibition Center, Journal of Building Structures, 34, 3, pp. 45-53, (2013)

← 1 2 →