| 地震作用下开口Kiewitt型弦支穹顶结构的动力稳定 |
| |
| 引用本文： | 李永梅,郭磊,张微敬.地震作用下开口Kiewitt型弦支穹顶结构的动力稳定[J].空间结构,2011,17(4). |
| |
| 作者姓名： | 李永梅 郭磊 张微敬 |
| |
| 作者单位： | 1. 北京工业大学工程抗震与结构诊治北京市重点实验室,北京 100124;北京工业大学城市与工程安全减灾教育部重点实验室,北京100124
2. 北京工业大学工程抗震与结构诊治北京市重点实验室,北京,100124 |
| |
| 基金项目： | 国家自然科学基金资助项目(51178009) |
| |
| 摘 要： | 根据弦支穹顶结构的受力特点,建立梁元、杆元和索元的混合有限元动力分析模型,提出利用动态增量法,根据B-R判别准则,提取各级地震加速度幅值下的节点最大位移作为动力响应特征参数,探讨大跨度、小矢跨比开口Kiewitt型弦支穹顶结构在地震作用下的动力稳定极限承载力的研究方法.通过改变结构参数、几何参数等诸多因素来研究其对地震作用下结构动力稳定临界值的影响.分析表明,初始缺陷会明显降低弦支穹顶结构的动力稳定临界值,矢跨比、预应力值和杆件截面对于结构的动力稳定性不呈单调变化.
|
| 关 键 词： | 弦支穹顶 动力稳定 动态增量法 B-R判别准则 特征参数 |
Dynamic stability of Kiewitt suspen dome with a hole under earthquakes |
| |
| LI Yong-mei
,
GUO Lei
,
ZHANG Wei-jing.Dynamic stability of Kiewitt suspen dome with a hole under earthquakes[J].Spatial Structures,2011,17(4). |
| |
| Authors: | LI Yong-mei GUO Lei ZHANG Wei-jing |
| |
| Affiliation: | LI Yong-mei1,2,GUO Lei1,ZHANG Wei-jing1 (1.Beijing Key Lab of Earthquake Engineering and Structural Retrofit,Beijing University of Technology,Beijing 100124,China,2.The Key Laboratory of Urban Security and Disaster Engineering,Ministry of Education,Beijing 100124 China) |
| |
| Abstract: | Based on the load-bearing characteristics,the combined finite element model of beam elements,truss elements and cable elements was set up.A method taking the maximum displacement on nodes under earthquake acceleration of each level as dynamic response representative parameter is proposed to study the dynamic ultimate capacity for the Kiewitt suspen dome with long span and small ratio of rise to span by application of the incremental dynamic analysis combined with B-R kinetic criterion.Furthermore,the influe... |
| |
| Keywords: | suspen dome dynamic stability incremental dynamic analysis B-R criterion representative parameter |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
