The effect of damping on dynamic response of underground tunnel structures

被引：0
|
作者：
Xu Ying-qian [1 ]
Qi Cheng-zhi [1 ]
Sa Man [1 ]
机构：
[1] Beijing Univ Civil Engn & Architecture, Beijing High Inst, Res Ctr Engn Struct & New Mat, Beijing 100044, Peoples R China
来源：
ROCK AND SOIL MECHANICS | 2012年 / 33卷
关键词：
beam on elastic foundation model; separated variable method; external damping internal damping; attenuation curve;
D O I：
暂无
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
The beam on elastic foundation model is used to simulate the underground tunnels structures; a vibration equation on two-parameter foundation considering the bending moment, axial force, shear deformation, external and internal damping is obtained. An approximate method for calculating of displacement of underground pipes is used to compute the displacement of underground tunnels structures, avoiding the trouble of integral transform. In numerical example involving the damping. it is convenient to use a special separated variable method to obtain natural frequencies and damping ratio, the attenuation of displacement considering damping. It is concluded that for underground structures, the effect of internal damping can be neglected.
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收藏
页码：196 / 200
页数：5
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