[1]朱明亮,陆金钰,郭正兴.新型环箍-穹顶全张力结构局部断索抗连续倒塌性能分析[J].东南大学学报(自然科学版),2016,46(5):1057-1062.[doi:10.3969/j.issn.1001-0505.2016.05.027]
 Zhu Mingliang,Lu Jinyu,Guo Zhengxing.Analysis on progressive collapse resistance of novel torus-dome tensile structure due to cable rupture[J].Journal of Southeast University (Natural Science Edition),2016,46(5):1057-1062.[doi:10.3969/j.issn.1001-0505.2016.05.027]
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新型环箍-穹顶全张力结构局部断索抗连续倒塌性能分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
46
期数:
2016年第5期
页码:
1057-1062
栏目:
土木工程
出版日期:
2016-09-20

文章信息/Info

Title:
Analysis on progressive collapse resistance of novel torus-dome tensile structure due to cable rupture
作者:
朱明亮陆金钰郭正兴
东南大学混凝土及预应力混凝土教育部重点实验室, 南京210096; 东南大学土木工程学院, 南京210096
Author(s):
Zhu Mingliang Lu Jinyu Guo Zhengxing
Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China
School of Civil Engineering, Southeast University, Nanjing 210096, China
关键词:
环箍-穹顶全张力结构 断索 连续倒塌 向量式有限元 动力放大系数
Keywords:
torus-dome tensile structure cable rupture progressive collapse vector form intrinsic finite element dynamic magnification factor
分类号:
TU312.3;TU394
DOI:
10.3969/j.issn.1001-0505.2016.05.027
摘要:
为了探究一种由周边环形张拉整体和中部索穹顶组成的新型环箍-穹顶全张力结构局部断索的抗连续倒塌性能,在分析其静力及动力特性的基础上,利用自编向量式有限元程序建立了环箍穹顶索杆张力结构的数值模型.考虑结构初始状态,采用等效荷载卸载法分析得到了该结构不同类型拉索破断后剩余结构的动力响应,包括结构位形、节点位移及构件内力等.分析结果表明,利用向量式有限元法能够有效地进行结构局部断索后的动力响应分析;张拉整体单元的拉索破断主要影响所在单元附近的拉索,不会形成连续倒塌;索穹顶内部的拉索破断对周边张拉整体结构影响较小,新型环箍穹顶索杆张力结构具有较好的抗连续倒塌性能.
Abstract:
In order to study the performance on progressive collapse resistance of a novel torus-dome tensile structure, which consists of a surrounding tensegrity torus and a central Levy type cable dome, due to cable rupture, the numerical model for the torus-dome tensile structure was fabricated by the self-compiled vector form intrinsic finite element(VFIFE)program based on the analysis of static and dynamic characteristics. With the consideration of the initial statue, the dynamic responses of the remaining structures after the rupture of different types of cables were simulated by the full dynamic equivalent load transient unloading method, including the configuration changes, the nodal displacements and the internal forces of cables and so on. The analysis results show that the VFIFE method can be used to effectively analyze the dynamic response due to local cable rupture. The rupture of tensegrity torus mainly influences adjacent cables and does not form progressive collapse. The rupture of the cable dome affects the tensegrity torus limitedly. The torus-dome tensile structure exhibits good performance to resist progressive collapse due to the cable rupture.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2016-03-28.
作者简介: 朱明亮(1982—), 男, 博士, 讲师, zhumingliangseu@163.com.
基金项目: 国家自然科学基金资助项目(51208263,51308105).
引用本文: 朱明亮,陆金钰,郭正兴.新型环箍-穹顶全张力结构局部断索抗连续倒塌性能分析[J].东南大学学报(自然科学版),2016,46(5):1057-1062. DOI:10.3969/j.issn.1001-0505.2016.05.027.
更新日期/Last Update: 2016-09-20