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| 隧道中高速列车震动所产生的路基动应力集中 | |
| 引用本文： | 张业民,周传璐,宋涛.隧道中高速列车震动所产生的路基动应力集中[J].沈阳大学学报,2013,25(1):65-68. |
| 作者姓名： | 张业民 周传璐 宋涛 |
| 作者单位： | 1. 沈阳大学建筑工程学院,辽宁沈阳,110044 2. 大连交通大学土木与安全工程学院,辽宁大连,116028 3. 聊城市公路局养护中心,山东聊城,252000 |
| 基金项目： | 辽宁省教育厅基金资助项目 |
| 摘 要： | 针对高速列车产生的震动,基于弹性波的散射理论,采用波函数展开法,研究了隧道中板型路基上的圆孔对SV波的散射和动应力集中,得到了问题的解析解,给出了路基中动应力集中因子的数值解,分析了路基的剪切模量的大小、波数等对动应力集中的影响.通过数值计算分析表明,板型路基的剪切模量的大小、波数等是影响动应力集中的重要因素,为隧道中板式路基的高速列车震动评价和地震评价提供了理论依据. |
| 关 键 词： | 板型路基 SV波 边界条件 动应力集中 数值解 |
Dynamic Stresses Concentrations of Tunnel Roadbed in High Speed Train Vibration |
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| Zhang Yemin , Zhou Chuanlu , Song Tao.Dynamic Stresses Concentrations of Tunnel Roadbed in High Speed Train Vibration[J].Journal of Shenyang University,2013,25(1):65-68. | |
| Authors: | Zhang Yemin Zhou Chuanlu Song Tao |
| Institution: | 1. Architectural and Civil Engineering College, Shenyang University, Shenyang 110044, China; 2. School of Civil and Safety Engineering, Dalian Jiaotong University, Dalian 116028, China; 3. Conservation Center, Highway Administration of Liaocheng, Liaocheng 252000, China) |
| Abstract: | Directing at the vibration of high-speed rail, based on the scattering theory of elastic waves, employing the wave function expansion method, the scattering and the dynamic stresses concentration of SV wave by circular aperture in the plate type subgrade in tunnel are investigated. The analytical solution of the problem is derived, and the numerical solution of the dynamic stress concentration in the subgrade is presented. The effects of the shear elasticity of the plate type subgrade, the wave number on the dynamic stress concentration are analyzed. Analysis shows that the shear elasticity of the surrounding rock and the wave number are factors that influence dynamic stress concentration factor, and provide important theoretical foundation for the earthquake evaluation of lining. |
| Keywords: | plate type subgrade SV wave boundary conditions dynamic stress concentration numerical solution |
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