[1]杨吉新,党慧慧,雷凡.考虑水作用的桥墩自振特性计算方法对比分析[J].世界地震工程,2010,(03):091-95.
 YANG Jixin,DANG Huihui,LEI Fan.Comparison of methods for natural frequency calculation of piers considering interaction with water[J].,2010,(03):091-95.
点击复制

考虑水作用的桥墩自振特性计算方法对比分析
分享到:

《世界地震工程》[ISSN:/CN:]

卷:
期数:
2010年03期
页码:
091-95
栏目:
出版日期:
2010-03-01

文章信息/Info

Title:
Comparison of methods for natural frequency calculation of piers considering interaction with water
作者:
杨吉新1 党慧慧2 雷凡3
武汉理工大学交通学院, 湖北 武汉 430063
Author(s):
YANG Jixin1 DANG Huihui2 LEI Fan3
School of Transportation, Wuhan University of Technology, Wuhan 430063, China
关键词:
动力特性基本周期自振频率动水压力
Keywords:
dynamic characteristicsfundamental periodnatural frequencydynamic water pressure
分类号:
U443.22;P315.95
摘要:
地震作用下,深水中的桥墩在水流作用下动力特性会有很大的变化,《铁路工程抗震设计规范》(GB50111-2006)规定:在常水位以下的部分,对水深超过5m时,应计入地震动水压力对桥墩的影响。考虑水的作用,目前可以用于计算桥墩自振频率和周期的方法主要有解析法、数值分析法和规范中给出的公式法,文中对这3种方法做了简单的介绍,并通过对某连续钢构桥桥墩的周期和自振频率的计算,综合其他各个方面对这3种方法进行进一步对比分析。总结得出了这3种方法分别适用的范围:公式法可用于只需1阶频率、不用考虑地基土影响的圆形或圆端形桥墩;解析法则适用于结构形式简单,截面统一的桥墩;数值分析法可以用于所有形式的桥墩,灵活性强,但对建模能力要求较高。在此基础上对这3种方法的优缺点进行了分析,为考虑与水相互作用的桥墩自振特性计算方法的选择提供了参考依据。
Abstract:
Owing to the interaction of pier and water,the dynamic characteristics of pier in water have great change.Code for Seismic Design of Railway Engineering(GB50111-2006)prescribes that if the normal water level is deeper than 5 meters,the dynamic water pressure on piers should be considered.For calculating natural frequency and period of the pier in deep water,the available methods include analytic method,numerical method and the formula given in the Code.There is a short introduction of the 3 methods.The natural frequency of piers of a rigid frame bridge project is calculated.The results are found that the Code formula is suitable only for fundamental frequency calculation,and no considering the earth base effect of circle section shape piers.The analytic method is suitable for the piers with simple shape and constant section.The numerical method applies to all types of piers,but requires high techniques in creating calculation model.Based on the above relative merits of the three methods,the results can be for a reference of the method selection in calculating the dynamic characteristics of piers.

参考文献/References:

[1] 张敏.桥墩与河水流固耦合振动分析[D].大连:大连交通大学,2006.Zhang Min.Vibration analysis of solid-fluid in teraction for pierriver water[D].Dalian:Dalian Jiaotong University,2006.
[2] 居荣初,曾心传.弹性结构与液体的耦联振动理论[M].北京:地震出版社,1983.Ju Rongchu,Zeng Xinchuan.An Coupled Vibration Theory Between Elastic Structures and Liquid[M].Beijing:Earthquake Publishing House,1983.
[3] 李彤.地震作用下土-群桩-结构-水相互作用体系的动力反应分析[D].上海:同济大学,1999.Li Tong.Seismic response an alysis of soil piles group structure-water system[D].Shanghai:Tongji University,1999.
[4] 赖伟,王君杰,胡世德.地震下桥墩动水压力分析[J].同济大学学报,2004,32(1):1-5.Lai Wei,Wang Junjie,Hu Shide.Earthquake induced hydrodynaminc pressure on bridge pier[J].Journal of Tongji University,2004,32(1):1-5.
[5] Nilrat F.Hydrodynamic pressure and added mass for axisymmetric bodies[R].[s.1.]:Earthquake Engineering Research Center,Berkeley,UC,1980.
[6] GB50111-2006,铁路工程抗震设计规范[S].GB50111-2006.Code for Seismic Design of Raiwlay Engineering[S].
[7] 杨吉新,张可,党慧慧.基于ANSYS的流固耦合动力分析方法[J].船海工程,2008,37(6):86-90.Yang Jixin,Zhang Ke,Dang Huihui.Dynamic analysis method for fluid-solid coupling based on ANSYS[J].Ship & Ocean Engineering,2008,37(6):86-90
[8] 龚曙光.ANSYS基础应用及范例解析[M].北京:机械工业出版社,2003.Gong Shuguang.ANSYS Foundation Application and Model Analysis[M].Beijing:China Machine Press,2003

相似文献/References:

[1]赵青,肖卓.曲线箱梁桥的动力特性参数分析[J].世界地震工程,2010,(01):197.
 ZHAO Qing,XIAO Zhuo.Analysis on dynamic characteristic parameters of a curved box-girders bridge[J].,2010,(03):197.
[2]陈淮,胡锋,李静斌.吊杆损伤对湛河斜靠式拱桥动力特性的影响[J].世界地震工程,2010,(04):001.
 CHEN Huai,HU Feng,LI Jingbin.Influences of damaged suspenders on dynamic properties of the Zhanhe double X-arch bridge[J].,2010,(03):001.
[3]刘小生,杨正权,刘启旺.猴子岩高面板坝振动台模型试验——大坝结构动力特性研究[J].世界地震工程,2010,(04):121.
 LIU Xiaosheng,YANG Zhengquan,LIU Qiwang.Study on shaking table model tests for dynamic characteristics of Houziyan high concrete face rock-fill dam[J].,2010,(03):121.
[4]洪小星,陈国兴,孙田,等.砂砾土动力特性的室内试验研究进展[J].世界地震工程,2011,(01):047.
 HONG Xiaoxing,CHEN Guoxing,SUN Tian,et al.Research progress of labrotory tests on the dynamic characteristics of gravel soil[J].,2011,(03):047.
[5]冀伟,刘世忠.波形钢腹板连续梁的动力特性研究[J].世界地震工程,2011,(04):149.
 JI Wei,LIU Shizhong.Study on dynamic characteristics of continuous box girder with corrugated steel webs[J].,2011,(03):149.
[6]代慧娟,刘林,赵立涛,等.新型空冷支架结构体系抗震性能的理论分析[J].世界地震工程,2012,(03):108.
 DAI Huijuan,LIU Lin,ZHAO Litao,et al.Theoretical analysis of seismic performance of new-type air-cooled condenser supporting structure system[J].,2012,(03):108.
[7]代慧娟,白国良,王博,等.1000MW带伞撑空冷支架结构动力特性试验研究与有限元分析[J].世界地震工程,2013,(02):066.
 DAI Huijuan,BAI Guoliang,WANG Bo,et al.Experimental study and finite element analysis of dynamic characters for air-cooled condenser structure with umbrella brace[J].,2013,(03):066.
[8]曾桂香,何耀民,胡少伟.基于ANSYS的碾压混凝土重力坝抗震性能分析[J].世界地震工程,2007,(01):110.
 ZENG Gui-xiang,HE Yao-min,HU Shao-wei.Seismic response analysis of roller compacted concrete(RCC) gravity dam based on ANSYS[J].,2007,(03):110.
[9]王伟,王俭.粘性土地基在动荷载作用下变形分析[J].世界地震工程,2007,(01):141.
 WANG Wei,WANG Jian.Deformation analysis of clay soil foundation under dynamic load[J].,2007,(03):141.
[10]孟会英,陈秀云,雷世发.预应力混凝土连续弯箱梁桥动力特性分析与试验研究[J].世界地震工程,2008,(01):128.
 MENG Hui-ying,CHEN Xiu-yun,LEI Shi-fa.Dynamic analyses and experiment studies on the prestressed concrete continuous curved box-girders[J].,2008,(03):128.

备注/Memo

备注/Memo:
收稿日期:2009-7-3;改回日期:2009-7-31。
基金项目:国家高技术研究发展计划(863)项目(2007AA11Z107)
作者简介:杨吉新(1964- ),男,教授,博士,主要从事土木工程和计算力学研究.E-mail:whutvses@163com
更新日期/Last Update: 1900-01-01