| 预应力对弦支穹顶结构动力稳定性的影响 |
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| 引用本文： | 刘慧娟,罗永峰. 预应力对弦支穹顶结构动力稳定性的影响[J]. 建筑结构, 2009, 0(7) |
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| 作者姓名： | 刘慧娟 罗永峰 |
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| 作者单位： | 同济大学土木学院建筑工程系,上海,200092;同济大学土木学院建筑工程系,上海,200092 |
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| 基金项目： | 世博场馆大空间结构安全保障关键技术(05dz05812) |
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| 摘 要： | 采用基于B-R运动准则的改进判别方法,结合结构时程响应曲线判定弦支穹顶结构的动力稳定性,研究拉索预应力、矢跨比对弦支穹顶动力稳定性能的影响。算例分析研究表明,在动力荷载作用下存在一组最优预应力,此时结构动力稳定临界荷载较大;在不同预应力作用下,随着矢跨比增大,结构临界荷载增大;在同一预应力作用下,随着矢跨比增大,结构临界荷载增大但幅度很小。
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| 关 键 词： | 弦支穹顶 预应力 临界荷载 动力稳定 |
Influence of pre-stress on dynamic stability of suspen-domes |
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| Liu Huijuan,Luo Yongfeng. Influence of pre-stress on dynamic stability of suspen-domes[J]. Building Structure, 2009, 0(7) |
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| Authors: | Liu Huijuan Luo Yongfeng |
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| Affiliation: | Department of Building Engineering;College of Civil Engineering;Tongji University;Shanghai 200092;China |
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| Abstract: | Based on B-R criteria,combined the method and time history response curves,the dynamic stability of suspen-domes was judged.The dynamic stability characteristics with different pre-stress values were analyzed under three-dimensional seismic excitation.The numerical results show that there is a group of optimal pre-stresses under which the critical dynamic load of the structure is higher;Under different pre-stress,the critical dynamic load of the structure increases with the increase of the ratio of rise to ... |
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| Keywords: | suspen-dome pre-stress critical load dynamic stablity |
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