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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

28卷

期数:

2011年03期

页码:

106-112

栏目:

出版日期:

2011-09-20

文章信息/Info

Title:

Dynamic Characteristics of Century Lotus Stadium and Response Spectrum Analysis

作者:

冼耀强^1,2,刘伯权¹,丁江澍^1,3

1. 长安大学 建筑工程学院,陕西 西安 710061; 2. 招商局地产控股股份有限公司, 广东 佛山 528000; 3. 佛山市建筑工程质量检测站,广东 佛山 528000

Author(s):

XIAN Yao-qiang^1,2, LIU Bo-quan¹, DING Jiang-shu^1,3

1. School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China; 2. China Merchants Property Development Co., Ltd., Foshan 528000, Guangdong, China; 3. Construction Engineering Quality Testing Station of Foshan, Foshan 528000, Guangdon

关键词:

轮辐式大跨度张拉结构;  动力特性;  模态质量参与系数;  反应谱分析;  地震作用

Keywords:

rung-shape long-span tensile structure;  dynamic characteristic;  modal mass participating coefficient;  response spectrum analysis;  seismic loading

分类号:

TU245.2

DOI:

-

文献标志码:

A

摘要:

以佛山市世纪莲体育中心大跨度轮辐式张拉索膜结构为研究对象,采用ANSYS程序建立有限元模型,分析其动力特性,并用振型分解反应谱法计算地震作用下结构的受力性能。研究结果表明:结构自振频率较低,频谱集中,频率跳跃现象不明显; 结构以屋盖的竖向振动为主,具有较好的抗侧刚度和抗扭刚度; 反应谱分析时,为保证各方向的模态质量参与系数在90%以上,建议其振型取140阶以上; 地震作用对结构上压环、下压环及腹杆的内力影响较大,必须参与荷载组合; 不同方向地震作用下,结构内力及位移存在显著差别,应同时考虑一维及多维地震作用的影响。

Abstract:

Using the program ANSYS, finite element model of the rung-shape long-span tensile cable-membrane structure in Foshan Century Lotus Stadium was conducted to investigate its dynamic characteristics and its mechanical performance under seismic loading. Study results indicate that the natural frequencies of the structure are all lower and frequency spectrums concentrate in a small range, and the frequency jumping phenomenon isn't in evidence. The structure's vibration is mainly vertical vibration, and its lateral stiffness and torsion rigidity are well. To ensure that the modal mass participating coefficient is more than 90%, the contributions of the former 140 modes should be considered when the analysis of response spectrum is done. Because the seismic loading can greatly influence the internal force of the upper compression ring, the lower compression ring, and the truss web, it should be calculated in the load combination. When the seismic loading on the structure is from different directions, the internal force and displacement of the structure have significant difference. So the effects of the different directions of the waves and their combinations should be considered together.

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备注/Memo

备注/Memo:

收稿日期:2011-04-26
基金项目:佛山市科技专项发展基金项目(2007055B)
作者简介:冼耀强(1973-),男,广东佛山人,招商局地产控股股份有限公司高级工程师,长安大学工学博士研究生, E-mail:xianyq@yeah.net。

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更新日期/Last Update: 2011-09-20