预应力混凝土部分斜拉桥的阻尼特性

doi:10.3785/j.issn.1008-973X.2012.05.005

2012, Vol. 46

Issue (5): 804-810 DOI: 10.3785/j.issn.1008-973X.2012.05.005

土木工程

预应力混凝土部分斜拉桥的阻尼特性

黄海燕1,谢旭1,吴冬雁1,王荣富2,王渊2

1.浙江大学建筑工程学院,浙江杭州 310058；2.杭州市市政公用建设开发公司,浙江杭州 310009

Damping characteristics of PC partial cable-stayed bridge

HUANG Hai-yan1, XIE Xu1, WU Dong-yan1, WANG Rong-fu2, WANG Yuan2

1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China;
2. Hangzhou Municipal Public Construction and Development Company, Hangzhou 310009, China

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摘要：

以塔梁固结、墩梁分离的预应力混凝土部分斜拉桥为对象,通过桥梁的振动试验分析这类结构的阻尼特性,在此基础上应用非正交阻尼理论研究构件阻尼与振型阻尼比之间的关系,验证在小阻尼条件下结构振型阻尼比可以通过构件阻尼效果线性叠加得到的假定.讨论应变能比例阻尼理论计算结构振型阻尼比的特性,并利用实测和理论结果的对比探讨这类结构的构件阻尼比.结果表明,预应力混凝土部分斜拉桥的竖弯和扭转振型的阻尼比约为1%,小于普通预应力混凝土连续梁桥；应变能比例阻尼理论可近似估算结构的振型阻尼比,预应力混凝土主梁、混凝土墩塔、钢拉索和场地的材料阻尼比建议分别在1.0%、1.2%、0.1%、4.0%附近取值．

Abstract:

Taking a PC partial cablestayed bridge with tower beam consolidation and pier beam separation system as an example, the damping characteristics of such structures was investigated in bridge vibration test. Based on non-orthogonal damping theory, the relationship between component damping and modal damping ratio was studied, and the assumption that the modal damping ratio can be obtained by superposition of component damping under small damping condition was verified. The characteristics of damping ratio which was calculated by strain energy proportional damping theory was discussed, and the component damping ratio was talked over by comparison of experimental and theoretical results. The results show that the damping ratios of vertical bending mode and torsional mode are about 1%, which is less than that of ordinary PC continuous beam bridge. The damping ratio can be obtained by linear superposition of component damping according to nonorthogonal damping theory. It also can be approximately estimated with strain energy proportional damping theory, while the material damping ratios of PC beam, concrete pier and tower and steel cable are around 1.0%, 1.2%, 0.1% and 4.0% respectively．

出版日期: 2012-05-01

U 448.27

通讯作者: 谢旭，男，教授、博导. E-mail: xiexu@zju.edu.cn

作者简介: 黄海燕(1985-)，女，硕士，从事桥梁结构研究.E-mail：just_haiyan@yahoo.com.cn

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引用本文:

黄海燕,谢旭,吴冬雁,王荣富,王渊. 预应力混凝土部分斜拉桥的阻尼特性[J]. J4, 2012, 46(5): 804-810.

HUANG Hai-yan, XIE Xu, WU Dong-yan, WANG Rong-fu, WANG Yuan. Damping characteristics of PC partial cable-stayed bridge. J4, 2012, 46(5): 804-810.

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http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2012.05.005 或 http://www.zjujournals.com/eng/CN/Y2012/V46/I5/804

［1］上官萍, 蔡鹏程, 卓卫东, 等. 部分斜拉桥体系参数对动力特性的影响分析［J］. 福州大学学报：自然科学版, 2007, 35(6): 888-892．
SHANG Guanping, CAI Pengcheng, ZHUO Weidong, et al. Parameter influencing analysis of dynamic characteristic of extradosed PC bridge［J］. Journal of Fuzhou University：Natural Science, 2007, 35(6): 888-892．
［2］蔺鹏臻, 刘凤奎, 张元海. 单索面混凝土矮塔斜拉桥的动力特性［J］. 世界地震工程, 2006, 22(3): 111-115．
LIN Pengzhen, LIU Fengkui, ZHANG Yuanhai. Dynamic behavior of concret extrados cablestayed bridges with single cable plane ［J］. World Earthquake Engineering, 2006, 22(3): 111-115．
［3］朱保华. 矮塔斜拉桥的动力特性及地震响应分析［D］.成都: 西南交通大学, 2008.11．
ZHU Baohua. Research on dynamic behavior and seismic response of shortpylon cablestayed bridge［D］. Chengdu: Southwest Jiaotong University, 2008.11．
［4］蔡鹏程. 三跨预应力混凝土部分斜拉桥动力特性及地震反应特性研究［D］. 福州: 福州大学, 2005.12．
CAI Pengcheng. Dynamic and seismic response analysis of threespan PC partly cablestayed bridge［D］. Fuzhou: Fuzhou University, 2005.12．
［5］杨国静. 墩梁刚结和墩梁铰结矮塔斜拉桥的比较分析研究［D］. 成都: 西南交通大学, 2007.5．
YANG Guojing. Comparative analysis of lowpylon cablestayed bridge with piergirder rigid connection and piergirder hinged connection ［D］. Chengdu: Southwest Jiaotong University, 2007.5．
［6］新原雄二, 河野哲也, 山野辺慎一, 等. PCエクストラドーズド橋の減衰特性に関する考察［J］. 日本土木学会構造工学論文集, 2001, 47A: 489-500．
NIIHARA Y, KOHNO T, YAMANOBE S, et al. Study characteristics of PC extradosed bridges ［J］. Journal of Structural Engineering, 2001, 47A: 489-500.
［7］郭震山, 陈艾荣. 缆索支承桥梁模态阻尼特性及理论分析［J］. 同济大学学报：自然科学版, 2005, 33(1): 2-5．
GUO Zhenshan, CHEN Airong. Characteristic and theoretical analysis of modal damping of cablesupported bridge ［J］. Journal of Tongji University：Natural Science, 2005, 33(1): 2-5．
［8］彭涛. 基于环境激励的大跨度桥梁模态分析与应用研究［D］. 长沙: 长沙理工大学, 2007.4．
PENG Tao. Research on modal analysis and application of longspan bridges based on ambient excitation［D］. Changsha: Changsha University of Science & Technology, 2007.4．
［9］章关永, 刘进明. 上海卢浦大桥主桥动力特性测试研究［J］. 振动与冲击, 2008, 27(9): 167-170．
ZHANG Guanyong, LIU Jinming. Measurement of Lupu arch bridge vibration characteristics ［J］. Journal of Vibration and Shock, 2008, 27(9): 167-170．
［10］蔡登山, 党志杰. 军山长江公路大桥主桥静动力特性试验研究［J］. 世界桥梁, 2003, (1): 38-41．
CAI Dengshan, DANG Zhijie. Experimental study of static and dynamic characteristic of Junshan Changjiang highway bridge ［J］. World Bridges, 2003, (1): 38-41．
［11］王涛, 黄平明. 斜拉桥模态试验研究［J］. 太原理工大学学报, 2007, 38(5): 401-403．
WANG Tao, HUANG Pingming. Experimental modal analysis of cablestayed bridge［J］. Journal of Taiyuan University of Technology, 2007, 38(5): 401-403．
［12］韦勇, 陈国平. 结构非比例阻尼矩阵的建模和识别［J］.南京航空航天大学学报, 2004, 36(6): 740-743．
WEI Yong, CHEN Guoping. Modeling and identifying of nonproportional damping of structure［J］. Journal of Nanjing University of Aeronautics & Astronautics, 2004, 36(6): 740-743．
［13］ MIYAMOTO A, MORIKAWA H, KUBOTA Y. Damage evaluation of concrete bridges based on modal parameters considering nonproportional damping ［J］. Journal of Structural Mechanics and Earthquake Engineering, 23(490): 111-120.
［14］谢旭, 高金盛, 苟昌焕, 等. 应用碳纤维索的大跨度斜拉桥结构振动特性［J］. 浙江大学学报：工学版, 2005, 39(5): 728-733．
XIE Xu, KAO Chinsheng, KOU Changhuan et al. Dynamic characteristics of longspan cablestayed bridges using carbon fiber composite cable ［J］. Journal of Zhejiang University： Engeneering Science, 2005, 39(5): 728-733．
［15］ JUANG J N, RICHARD S P. An eigensystem realization algorithm for modal parameter identification and modal reduction ［J］. Journal of Guidance, Control, Dynamic, 1985, 8(5): 620-627．
［16］ FOSS K A. Coordinates which uncouple the equations of motion of damped linear dynamic systems ［J］. Journal of Applied Mechanics, Vol. 25, 1958: 361-364．
［17］米田昌弘. 橋梁の可動支承部における摩擦力に起因した構造減衰特性に関する2,3考察［J］. 日本土木学会論文集, 23(492): 137145, 1994.6．
YONEDA M. Some considerations on damping characteristics of bridge structures due to coulomb friction force at movable supports ［J］. Journal of Structural Mechanics and Earthquake Engineering, 23(492): 137145, 1994.6．
［18］ KAWASHIMA K, UNJOH S, TUNOMOTO. Estimation of damping ratio cablestayed bridges for seismic design［J］. Journal of Structural Engineering, 1993, 119(4): 1015-1031．
［19］ YAMAGUCHI H, ITO M. Modedependence of structural damping in cablestayed bridge ［J］. Journal of Wind Engineering and Industrial Aerodynamics, 1997, 72: 289-300．
［20］ Japan Road Association. Part V: Seismic Design. Design specifications of highway bridges ［S］. Tokyo: Maruzen, 1996.

[1]	谢旭, 李季隆, 赵俊亮, 张鹤, 山下幹夫. 基于遗传算法的车辆参数识别方法[J]. J4, 2010, 44(9): 1818-1824.
[2]	谢旭, 吴冬雁, 王建峰, 等. 伸缩缝车辆冲击引起的钢箱梁桥振动特性[J]. J4, 2009, 43(10): 1923-1930.

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