索穹顶结构局部断索分析

何键;袁行飞;金波

振动与冲击 ›› 2010, Vol. 29 ›› Issue (11) : 13-16.

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振动与冲击 ›› 2010, Vol. 29 ›› Issue (11) : 13-16.
论文

索穹顶结构局部断索分析

  • 何键1; 袁行飞1; 金波2
作者信息 +

Analysis of cable domes with rupture of local cable

  • Jian He1; Xingfei Yuan1; Bo Jin2
Author information +
文章历史 +

摘要




索穹顶结构是由索和杆为基本构成单元,通过预应力提供刚度的一类新型索杆空间结构体系。为考察结构中局部索(杆)破坏对整体结构的影响,本文以某体育馆索穹顶结构方案为背景,采用动力学方法模拟了各类杆件破断后其他杆件内力的变化和结构最终到达的平衡位置。通过观察局部索(杆)破坏是否引起其它索松弛从而造成较大节点变位来判断结构体系是否安全,通过观察局部索(杆)破坏是否引起其它索杆的强度破坏来判断结构是否连续倒塌,同时区分了不同位置杆件的安全等级。本文的研究对于该类结构的正常使用和维护有一定的借鉴意义。



Abstract

The cable dome composed of cables and struts is a new type of cable-strut system whose stiffness is provided by prestress. To investigate the structural behavior after one cable (strut) ruptures, dynamic method was adopted to simulate the process of cable rupture. The variety of internal force of other members and final equilibrium position of the structure after failure of different members was investigated. The safety of the structure was evaluated by observing if the rupture of local cable causes slack of other cables and large displacement. The ability of anti-continuous collapses of the structure was judged by observing whether the rupture of local cable (strut) causes progressive failure of other members. The safety grade of members in different position was also distinguished. The work here would benefit the normal service and maintenance of cable domes.

关键词

索穹顶 / 索杆体系 / 索破断 / 索松弛 / 连续倒塌

Key words

cable dome / cable-strut system / rupture of cable / slack of cable / progressive collapse

引用本文

导出引用
何键;袁行飞;金波. 索穹顶结构局部断索分析[J]. 振动与冲击, 2010, 29(11): 13-16
Jian He;Xingfei Yuan;Bo Jin. Analysis of cable domes with rupture of local cable [J]. Journal of Vibration and Shock, 2010, 29(11): 13-16

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