Shaking table model test on failure of tunnel portal section under strong earthquake

被引：0
|
作者：
Zhao, X. [1 ,2 ]
Li, T. B. [2 ]
Tao, L. J. [3 ]
Hou, S. [3 ]
机构：
[1] Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
[2] State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu, Peoples R China
[3] Beijing Univ Technol, Inst Geotech Engn & Undergrad Construct, Beijing, Peoples R China
来源：
ROCK CHARACTERISATION, MODELLING AND ENGINEERING DESIGN METHODS | 2013年
基金：
中国国家自然科学基金;
关键词：
D O I：
暂无
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Mountainous tunnel portal section is one of the most easily damaged parts during strong earthquake. Failures of this part may block roads, which greatly influences the transportation of the local area after earthquake. Model tests on shaking table of tunnel portal section are carried out. A rigid testing box is adopted in the tests. The rock condition around tunnel portal section is designed rather weak as the rock in this part is often weathered and loose. A new similarity material with a main component of fly ash has been successfully made to simulate the surrounding rock. Test with a model scale of 1:50 are designed. Slope angles are set to 35. according to the slope range limited by the rock type. By the testing results, the rule of tunnel portal failure under the condition is studied. The results can be references for other similar projects and for seismic damping measure design.
引用
收藏
页码：573 / 576
页数：4
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