毕业设计论文外文翻译.doc

DYNAMIC BEHAVIOR OF PORTAL PART OF TRAFFIC TUNNEL IN HIGH-INTENSITY EARTHQUAKE AREA
交通隧道在高烈度地震区洞口动态行为的探究
外文翻译
专业名称：
土木工程
年级班级：
道桥08-4班
学生XX：
银
指导教师：
徐 平
XX理工大学土木工程学院
二○一二年六月十一日
DYNAMICBEHAVIOROF PORTAL PART OF TRAFFIC TUNNEL IN HIGH-INTENSITY EARTHQUAKE AREA
SHEN Yusheng1,2 ,GAO Bo2 ,WANG Zhengzheng2 ,WANG Yingxue2
1Postdoctoral Station of Mechanics, Southwest Jiaotong University, Chengdu 610031,
China; email:sys1997163..
2School of Civil Engineering,Southwest Jiaotong University, Chengdu 610031, China;
Abstract: A large-scale shaking table test is acplished on the dynamic response and failure modes of the tunnel. The result is that the largest dynamic response of tunnel structure appears at the side-wall and the shear or fracturing damage appears at the invert, which is basically the same damage state with tunnel engineering in Wen Chuan earthquake. The internal force value of tunnel structure minish and the numbers of cracks reduce after the shock absorption layer is set up in model test, and optimize the stress state of tunnel. The surface cracks of tunnel model appear firstly at both spandrels and develop diagonally at the tunnel entrance. The cracks arise "X"-shape distribution on the surface of the model soil. There are a lot of circumferential cracks at tunnel portal under the condition of dynamic loads, and most of longitudinal cracks or oblique cracks can terminate when extending to the circumferential cracks. So that it is proposed that there should be designed moreshock absorption seams in the vicinity of tunnel portal in order to be propitious to damping the earthquake energy.
Key words: dynamic behavior, shaking table test, high-intensity earthquake area
1Introduction
It is regrettable that the people's lives and property have suffered great losses during "5 • 12" Wenchuan earthquake in Sichuan province. At the same time the civil transport engineering are damaged to som