[1]贺星新,李爱群,李建慧,等.土-桩-结构相互作用对独塔自锚式悬索桥地震响应的影响[J].东南大学学报(自然科学版),2014,44(1):150-154.[doi:10.3969/j.issn.1001-0505.2014.01.027]
 He Xingxin,Li Aiqun,Li Jianhui,et al.Influence of soil-pile-structure interaction on seismic response on self-anchored suspension bridge with single-tower[J].Journal of Southeast University (Natural Science Edition),2014,44(1):150-154.[doi:10.3969/j.issn.1001-0505.2014.01.027]
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土-桩-结构相互作用对独塔自锚式悬索桥地震响应的影响()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第1期
页码:
150-154
栏目:
土木工程
出版日期:
2014-01-18

文章信息/Info

Title:
Influence of soil-pile-structure interaction on seismic response on self-anchored suspension bridge with single-tower
作者:
贺星新1李爱群1李建慧2苏骥2
1东南大学土木工程学院, 南京 210096; 2 南京林业大学土木工程学院, 南京 210037
Author(s):
He Xingxin1 Li Aiqun1 Li Jianhui2 Su Ji2
1School of Civil Engineering, Southeast University, Nanjing 210096, China
2School of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
关键词:
土-桩-结构相互作用 自锚式悬索桥 时程分析 地震响应
Keywords:
soil-pile-structure interaction self-anchored suspension bridge time history analysis seismic response
分类号:
TU997
DOI:
10.3969/j.issn.1001-0505.2014.01.027
摘要:
为研究土-桩-结构相互作用对独塔自锚式悬索桥动力特性及地震响应的影响规律,利用有限元软件Midas/Civil建立了2个空间有限元成桥状态模型,分别采用J.Penzien集中质量模型模拟的桩土边界和承台底部固结边界,并对结构进行了动力特性分析和不同地震工况下的非线性时程分析.研究结果表明,土-桩-结构相互作用延长了结构自振周期,且对主塔参与的振型影响很大.与基础固结模型相比,考虑土-桩-结构相互作用的结构在地震作用下的内力响应减小20%左右,而桥塔位移响应增大约50%,主梁位移响应增大约3%.因此,此类结构抗震设计时需基于不同控制目标选择不同的基础处理方式.
Abstract:
To study the influences of soil-pile-structure interaction on the dynamic characteristics and seismic response of a self-anchored suspension bridge with single-tower, two spatial finite element models of this structure were established based on the software Midas/Civil. By using the J.Penzien lumped mass model, one model simulated the soil-pile interaction and the other chose fixed boundary under the pile cap.Then,the dynamic characteristics analysis and nonlinear time history analysis under seismic motions were investigated. The research results show that the soil-pile-structure interaction extends the natural vibration period and has a great influence on the tower dominant vibration model. Compared with the fixed foundation model, the seismic force responses of the structure with soil-pile-structure interaction decrease more than 20%, while the displacement responses on the tower increase about 50% and those on the girder increase about 3%. Thus, during the aseismic design period of this kind of structures, different boundary models should be chosen for different performance objectives.

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相似文献/References:

[1]王浩,杨玉冬,李爱群,等.土-桩-结构相互作用对大跨度CFST拱桥地震反应的影响[J].东南大学学报(自然科学版),2005,35(3):433.[doi:10.3969/j.issn.1001-0505.2005.03.023]
 Wang Hao,Yang Yudong,Li Aiqun,et al.Influences of soil-pile-structure interaction on seismic response of long span CFST arch bridge[J].Journal of Southeast University (Natural Science Edition),2005,35(1):433.[doi:10.3969/j.issn.1001-0505.2005.03.023]
[2]刘春城,张哲,石磊.虚拟激励法在自锚式悬索桥竖向地震反应分析中的应用[J].东南大学学报(自然科学版),2003,33(4):522.[doi:10.3969/j.issn.1001-0505.2003.04.035]
 Liu Chuncheng,Zhang Zhe,Shi Lei.Application of pseudo excitation method to vertical seismic response analysis of self-anchored suspension bridges[J].Journal of Southeast University (Natural Science Edition),2003,33(1):522.[doi:10.3969/j.issn.1001-0505.2003.04.035]

备注/Memo

备注/Memo:
收稿日期: 2013-07-04.
作者简介: 贺星新(1990—),男,硕士生;李爱群(联系人),男,博士,教授,博士生导师,aiqunli@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(50725828,51278104)、江苏省高校自然科学研究计划资助项目(12KJB560003).
引用本文: 贺星新,李爱群,李建慧,等.土-桩-结构相互作用对独塔自锚式悬索桥地震响应的影响[J].东南大学学报:自然科学版,2014,44(1):150-154. [doi:10.3969/j.issn.1001-0505.2014.01.027]
更新日期/Last Update: 2014-01-20