减小高速列车荷载对地面结构损害的数值分析

孙伟; 王建国; 姜绍飞

doi:10.11883/1001-1455(2009)02-0155-07

减小高速列车荷载对地面结构损害的数值分析

doi: 10.11883/1001-1455(2009)02-0155-07

孙伟^1,2,
王建国^2,3,
姜绍飞^1,4

1.
沈阳建筑大学土木工程学院，辽宁沈阳 110168；
2.
新加坡国立大学防护技术中心，新加坡 119260；
3.
重庆大学资源开发及环境灾害控制工程教育部重点实验室，重庆 400030；
4.
福州大学土木工程学院，福建福州 350002

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出版历程
- 刊出日期: 2009-03-25

Reduction of high-speed train-induced building vibrations by protective trenches

1.
School of Civil Engineering, Shenyang Jian Zhu University, Shenyang 110168, Liaoning, China;
2.
Centre for Protective Technology, National University of Singapore, Singapore 119260, Singapore;
3.
State Key Laboratory of China Southwest Resource Exploitation and Environmental Disaster Control Engineering, Chongqing University, Chongqing 400030, China;
4.
School of Civil Engineering, Fuzhou University, Fuzhou 350002, Fujian, China

摘要

摘要: 用数值模拟的方法研究无填充壕沟、注水壕沟和砼填充壕沟对地表高速列车荷载引起振动的防护能力。运用LS-DYNA软件，对高速列车荷载作用下地面结构所产生的动力响应进行数值分析。通过数值模拟计算发现，无填充壕沟和注水壕沟可以明显降低地面结构关键点上的加速度与应力幅值，而砼填充壕沟并无明显降低结构中关键点上的加速度与应力值。对于地表高速列车荷载引起的地面结构振动，无填充壕沟与注水壕沟都有明显的防护作用,而砼填充壕沟的防护作用不明显。
- 固体力学 /
- 衰减效应 /
- 数值分析 /
- 地面结构 /
- 瑞利波 /
- 无填充壕沟 /
- 注水壕沟 /
- 砼填充壕沟
Abstract: Numerical analyses for structure-soil interaction were carried out to investigate the attenuation effect of open, inundated water and concrete-filled trenches on high-speed train loading-induced Rayleigh wave propagation. The acceleration and effective stress at some key points of a six-storey surface structure were comparatively studied with commercial software LS-DYNA for the protection of open trenches, inundated water trenches, concrete-filled trenches and no protection. Numerical results reveal that open trenches even inundated with water can effectively reduce peak acceleration and effective stress. However, concrete-filled trenches are not effective in the attenuations of peak acceleration and effective stress. Therefore, an open trench is still a good choice as a temporary protection barrier, though it is susceptible to collapse without effective support.
- solid mechanics /
- attenuation effect /
- numerical analysis /
- surface structure /
- Rayleigh wave /
- open trench /
- inundated water trench /
- concrete-filled trench

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文章访问数: 2407
HTML全文浏览量: 98
PDF下载量: 221
被引次数: 0

减小高速列车荷载对地面结构损害的数值分析

doi: 10.11883/1001-1455(2009)02-0155-07

计量

出版历程

Reduction of high-speed train-induced building vibrations by protective trenches

计量

出版历程

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