Study on dynamic response of large cable structure after cable break

被引：0
|
作者：
Liang C. [1 ]
Zhu Z. [1 ]
Zhang L. [1 ]
Bai G. [1 ]
Wang W. [1 ]
Chen Y. [1 ]
Wang Z. [1 ]
机构：
[1] Beijing Institute of Architectural Design, Beijing
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2023年 / 44卷 / 04期
关键词：
cable break; cable net; cable structure; dynamic coefficient; dynamic response; spoke-type cable truss;
D O I：
10.14006/j.jzjgxb.2022.0435
中图分类号：
学科分类号：
摘要：
In large cable structures, cables are the main load-bearing members. The analysis of the influence of cable break on the structure is the key to the design of large cable structures against progressive collapse. A number of large cable structure projects, such as Five-hundred-meter Aperture Spherical Telescope(FAST), National Speed Skating Oval, Qatar Lusail Stadium, Sanya International Sports Industry Park, Rizhao Kuishan Sports Center Stadium, Dalian Barracuda Bay Soccer Arena, were selected to study the dynamic response of structures after cable break using the dynamic analysis method according to the situation of typical cable breaking in these structures, and the characteristics of dynamic response and dynamic coefficients of cable structures, such as cable net (bidirectional orthogonal, triangular mesh) and spoke-type cable truss(single ring cable, double ring cable, inner ring with rigid canopy), after cable break were summarized. The analysis results show that, except for triangular mesh single-layer cable net, the dynamic coefficients of other types of cable net and spoke-type cable truss are greater than the recommended values in code after cable break, so dynamic analysis method is recommended for cable break analysis. Rigidity, stability and internal force redistribution ability of bidirectional orthogonal single-layer cable net are less than those of triangular mesh single-layer cable net, so the dynamic effect caused by cable break is larger. Compared with the double-looped spoke-type cable truss structure, the mutual dynamic effect after cable break between radial cables and looped cables of the single-looped spoke-type cable truss structure with staggered arrangement is smaller. For spoke-type cable truss structures, when the top chord of the cable truss is provided with membrane arches and cross secondary cables which are arranged in the same direction as the radial cable, or when there is a rigid canopy around the ring cable, the dynamic effect of cable break can be effectively reduced. © 2023 Science Press. All rights reserved.
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页码：42 / 53
页数：11
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