| 深埋TBM施工输水隧洞结构的三维仿真分析 |
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| 引用本文： | 钟登华,佟大威,王帅,刘东海.深埋TBM施工输水隧洞结构的三维仿真分析[J].岩土力学,2008,29(3):609-613. |
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| 作者姓名： | 钟登华 佟大威 王帅 刘东海 |
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| 作者单位： | 天津大学,建筑工程学院,天津,300072 |
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| 基金项目： | 国家自然科学基金
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国家重点基础研究发展计划(973计划) |
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| 摘 要： | 考虑围岩材料的弹塑性,引入有限元程序中的生死单元,建立了可模拟隧洞开挖过程的围岩三维仿真模型,求得了深埋隧洞围岩变形的分布模式;并在此基础上,采用接触模型和库仑摩擦模型模拟管片接头的非线性连接作用,建立了TBM隧洞管片结构的三维仿真模型,分析在不同工况(施工期、运行期、检修期)、不同围岩类型以及不同衬砌时机下管片的应力应变特征,为输水隧洞的适时衬砌和安全运行提供了依据.
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| 关 键 词： | 输水隧洞 TBM 数值仿真 单元生死模型 接触模型 库仑摩擦模型 施工期 输水隧洞 隧洞结构 三维仿真分析 constructing diversion tunnel deep water structure 安全运行 应变特征 应力 管片结构 时机 衬砌 围岩类型 检修期 运行期 工况 连接作用 非线性 |
| 文章编号： | 1000-7598-(2008)03-0609-06 |
| 收稿时间： | 2006-09-25 |
| 修稿时间： | 2006年9月25日 |
Three-dimensional simulation analysis of structure of deep water diversion tunnel with TBM constructing |
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| ZHONG Deng-hua,TONG Da-wei,WANG Shuai,LIU Dong-hai.Three-dimensional simulation analysis of structure of deep water diversion tunnel with TBM constructing[J].Rock and Soil Mechanics,2008,29(3):609-613. |
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| Authors: | ZHONG Deng-hua TONG Da-wei WANG Shuai LIU Dong-hai |
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| Institution: | School of Civil Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | Considering the elastoplasticity of surrounding rock, and introducing into the birth and death elements in the finite element program, a 3-D simulation model of surrounding rock which can simulate the boring process is established; and the distortion model of surrounding rock of deep tunnel is obtained. Based on the distortion model of surrounding rock, and adopting the contact model and Coulomb friction model to simulate the nonlinear connecting effect of segment joint, a 3-D simulation model of TBM tunnel segment structure is given to analyze its stress and strain characters during different working stages (construction stage, application stage, overhaul stage), different rock types and different lining times. The results can provide the basis for water diversion tunnel’s timely lining and safe running. |
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| Keywords: | water diversion tunnel TBM numerical simulation element birth and death model contact model Coulomb friction model |
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