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J4  2012, Vol. 46 Issue (9): 1599-1604    DOI: 10.3785/j.issn.1008-973X.2012.09.008
土木工程     
基于POD法控制模态选择的大跨屋盖
结构风致动力响应分析
章李刚,楼文娟,黄铭枫
浙江大学 建筑工程学院,浙江 杭州 310058
Wind-induced dynamic response analysis of long-span roof structure
based on selection of dominant vibration-modes with POD method
ZHANG Li-gang, LOU Wen-juan, HUANG Ming-feng
College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058,China
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摘要:

为了提高大跨度屋盖结构风致动力响应频域分析的计算效率,提出先挑选控制模态再进行风致响应有效计算的“二步法”过程.将本征正交分解(POD)法和模态叠加法相结合,建立风荷载作用下大跨屋盖结构各阶模态响应的快速估算方法,并以估算结果作为衡量准则进行控制模态的挑选;在经过挑选得到控制模态后,采用考虑了荷载空间分布相关性和广义风荷载谱中虚部成分的精确完全二次项组合方法(ACQC)进行风致响应的有效计算.将该方法运用于某大型火车站站台屋盖结构,计算表明:在采用相同的模态参与阶数的条件下,本方法得到的风致响应结果具有更高的精确性和更快的收敛性.

Abstract:

In order to increase the computational efficiency of the wind-induced dynamic response analysis of  long-span roof structures with the frequency-domain method, a two-step method, which means firstly modes selecting then effective wind-induced response calculation, was proposed. The way of quick estimating each modal response of the longspan roof structure under the wind loads was introduced by the combination of the proper orthogonal decomposition(POD)method and the mode superposition method, and the estimative results were used as a measure of the criteria for the control mode selection. After the selection of control mode, the wind-induced responses were calculated effectively by accurate complete quadratic combination(ACQC) method, which had taken into account the partial correlation of wind loads and the imaginary parts of the generalized wind forces. The method was applied in some large railway station platform, and the results indicated that, with the same number of the contribution modes, the wind-induced responds obtained by the proposed method had high accuracy and fast convergence.

出版日期: 2012-09-01
:  TU 312.1  
通讯作者: 楼文娟,女,教授.     E-mail: Louwj@zju.edu.cn
作者简介: 章李刚(1985-),男,博士生,从事结构风工程研究. E-mail: xiaobaiwml@zju.edu.cn
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引用本文:

章李刚,楼文娟,黄铭枫. 基于POD法控制模态选择的大跨屋盖
结构风致动力响应分析[J]. J4, 2012, 46(9): 1599-1604.

ZHANG Li-gang, LOU Wen-juan, HUANG Ming-feng. Wind-induced dynamic response analysis of long-span roof structure
based on selection of dominant vibration-modes with POD method. J4, 2012, 46(9): 1599-1604.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2012.09.008        http://www.zjujournals.com/eng/CN/Y2012/V46/I9/1599

[1] 顾明,周暄毅,黄鹏. 大跨度屋盖结构风致抖振响应研究[J]. 土木工程学报,2006,39(11):37-42.
GU ming, ZHOU Xuanyi, HUANG Peng. A study on the windinduced buffeting response of largespan roof structures[J]. China Civil Engineering Journal, 2006,39(11):37-42.
[2] 周向阳,梁枢果,张其林. 武汉体育馆结构屋盖风振响应分析[J]. 土木工程学报,2008,41(5):33-39.
ZHOU Xiangyang, LIANG Shuguo, ZHANG Qilin. Analysis of windinduced dynamic response of the steel roof of Wuhan Gymnasium[J]. China Civil Engineering Journal, 2008,41(5):33-39.
[3] 陈贤川,赵阳,董石麟. 大跨空间网格结构风振响应主要贡献模态的识别及选取[J]. 建筑结构学报,2006,27(1):9-15.
CHEN Xianchuan, ZHAO Yang, DONG Shilin. Identification and selection of dominant vibrationmodes contributory to windinduced vibration response for largespan space lattice structures[J]. Journal of Building Structures, 2006,27(1):9-15.
[4] NAKAYAMA M, SASAKI Y, MASUDA K. An efficient method for selection of vibration modes contributory to wind response on domelike roofs [J]. Journal of Wind Engineering and Industrial Aerodynamics, 1998,73:31-43.
[5] 陈波,武岳,沈世钊. RitzPOD法的原理及应用[J].计算力学学报,2007,24(4):499-504.
CHEN Bo, WU Yue, SHEN Shizhao. Principle and application of RitzPOD method[J]. Chinese Journal of Computational Mechanics, 2007,24(4):499-504.
[6] 张建胜,武岳,陈波. RitzPOD法及其在大跨度屋盖结构风振分析中的应用[J]. 沈阳建筑大学学报:自然科学版,2005,21(6):601-605.
ZHANG Jiansheng , WU Yue , CHEN Bo. A new loaddependent ritz vector method for windinduced response analysis of large span roofs :RitzPOD Method[J]. Journal of Shenyang Jianzhu University :Natural Science, 2005,21(6):601-605.
[7] CHEN X Z, KAREEM A. Proper orthogonal decompositionbased modeling, analysis, and simulation of dynamic wind load effects on structures [J].Journal of Engineering Mechanic, ASCE, 2005, 131(4):325-339.
[8] BIENKIEWICZ B, TAMURA Y, HAM HJ. Proper orthogonal decomposition and reconstruction of multichannel roof pressure [J]. Journal of Wind Engineering and Industrial Aerodynamics,1995,54/55: 369-381.
[9] 江棹荣,倪振华,谢壮宁.POD在大跨屋盖风致响应计算中的应用[J].土木工程学报,2007,40(6):1-6.
JIANG Zhaorong, NI Zhenhua, XIE Zhuangning. Application of POD to calculation of windinduced response of large roofs[J]. China Civil Engineering Journal,2007, 40(6):1-6.
[10] HUANG MF, CHAN CM, KWOK KCS, et al.Cross correlation of modal responses of tall buildings in windinduced lateraltorsional motion[J]. Journal of Engineering Mechanics, ASCE, 2009, 135(8): 802-812.
[11] 夏法宝,梁枢果,郭必武. 武汉国际证券大厦表面风压重组的POD法[J].华中科技大学学报:城市科学版,2005,22(2):90-94.
XIA Fabao, LIANG Shuguo, GUO Biwu. Reconstruction of wind pressure on Wuhan International Stock Building by using Proper orthogonal decomposition[J]. Journal of HUST: Urban Science Edition, 2005,22(2):90-94.

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