期刊
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
卷 137, 期 -, 页码 358-371出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jcsr.2017.06.014
关键词
Hoop cable failure; Cable sliding; Dynamic amplification factor; Dynamic coefficient; Suspendome; Structural safety
资金
- National Natural Science Foundation of China [51478310]
- Project of Tianjin Urban & Rural Construction Commission [2014-1]
- Chinese Scholarship Council [201606250065]
Cables are key components of suspendome structures and usually bear a high level of tension force. Thus, their sudden failure may cause a dramatic vibratory response and disproportionate internal force redistributions. This study investigated the cable failure effect of a 10.8 m scaled-down suspendome model during in-service state through numerical simulations and failure tests. The deforming behaviors, internal force redistribution pattern, and oscillatory responses were studied and compared. Results showed that cable failure causes evident oscil lations to the rest of the members. However, the suspendome exhibited strong structural stiffness, and no obvious collapse or failure behaviors were observed. Cable sliding occurred at rolling joints, which could influence the internal force redistribution patterns and dynamic effects at cables or strut members around the break region. Cable sliding behaviors reduced tension recovering ability and the dynamic effect at cable segments. Dynamic amplification factor and dynamic coefficient methods were both employed to evaluate the dynamic effect from the cable rupture because of different oscillatory patterns between cable segments and the rest of the members. Dynamic amplification factor was more applicable for shell and strut members, and the safety of cable segments can be evaluated and ensured with the dynamic coefficient method. The suggested values for the two indexes were also derived based on the test data, which could easily be used in the structural design process.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据