| 沉管隧道地震响应分析中的三维接触模型与算法研究 |
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| 引用本文： | 郭毅之,金先龙,丁峻宏,曹文宏,陈宏.沉管隧道地震响应分析中的三维接触模型与算法研究[J].应用力学学报,2006,23(1):48-52. |
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| 作者姓名： | 郭毅之 金先龙 丁峻宏 曹文宏 陈宏 |
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| 作者单位： | 1. 上海交通大学,上海,200030
2. 上海市隧道工程轨道交通设计研究院,上海,200070 |
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| 基金项目： | 国家自然科学基金(60273048) |
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| 摘 要： | 针对土体与埋置在土体中的管段以及沉管隧道各个柔性接头处不同构件之间的动力相互作用,采用基于超级计算机的三维接触模型对上海某沉管隧道进行了地震响应分析,并进行了三维接触算法的研究。整个模型单元数超过了120万,节点数超过了100万。研究证明,应用文中提出的接触模型和算法可将接触处理的CPU时间大大缩短。地震波载荷选用调幅后的唐山地震波,应用通用非线性动力分析有限元程序LS-DYNA进行求解,计算结果可为隧道的抗震设计提供有力依据。
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| 关 键 词： | 三维接触模型 沉管隧道 地震响应分析 LS-DYNA |
| 文章编号： | 1000-4939（2006）01-0048-05 |
| 收稿时间： | 2004-03-10 |
| 修稿时间： | 2004-03-102004-12-31 |
Three-Dimensional Contact Model and Algorithm for Earthquake Response of Immersed Tunnel |
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| Guo Yizhi,Jin Xianlong,Ding Junhong,Cao Wenhong,Chen Hong.Three-Dimensional Contact Model and Algorithm for Earthquake Response of Immersed Tunnel[J].Chinese Journal of Applied Mechanics,2006,23(1):48-52. |
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| Authors: | Guo Yizhi Jin Xianlong Ding Junhong Cao Wenhong Chen Hong |
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| Abstract: | Aimed at the contact between different parts in immersed tunnel,three-dimensional contact model based on supercomputer is adopted to deal with the seismic response of the immersed tunnel in Shanghai,the total model contains 1.2 million elements and a million nodes.The proposed model enables to shorten remarkably the CPU time of contact calculation.Taken the amplitude modulated Tangshan Seismic wave as the simulated input,nonlinear dynamic analysis program LS-DYNA is chosen to carry out the earthquake-resistant analysis of the immersed tunnel to provide sufficient evidences for the anti-seismic design of the immersed tunnel. |
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| Keywords: | three-dimensional contact model immersed tunnel earthquake response analysis LS-DYNA |
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