期刊论文

Large-scale shaking table model test study of seismic response characteristics on layered rock slope with tunnel

Niu, J.

中文

应用力学学报

1000-4939

2018

35

4

762-768

10.11776/cjam.35.04.C031

51204215:国家自然科学基金 51404309:国家自然科学基金 2018JJ3882:湖南省自然科学基金

本校为第一且通讯机构

针对下伏隧道水平层状岩质边坡,设计并完成比尺1∶10的大型振动台试验.试验选取汶川波、Kobe波和大瑞人工波作为台面输入地震波,研究下伏隧道水平层状岩质边坡的加速度和动位移响应变化规律及地震动参数对边坡动力响应特性的影响.研究表明:在地震荷载作用下,下伏隧道水平层状岩质边坡的加速度响应随着地震波类型、激振强度、激振方向、岩层相对位置等因素呈现出非线性变化特征;在X向或Z向单向激振下,边坡主要在地震波激振方向上产生动力响应;边坡的竖直加速度放大系数沿坡高呈“U”型变化,最小值出现在软弱夹层与上部弱风化岩层的分界面处,软弱夹层对边坡的竖向加速度响应有较大影响.边坡的动位...

A large scale shaking table experiment with a scale of 1:10 is designed and completed for a horizontal layered rock slope under a tunnel. A series of tests are performed with different seismic waves including Wenchuan, Darui and Kobe. The dynamic acceleration and dynamic displacement response of a horizontal layered rock slope in a submerged tunnel are studied, and the influence of ground motion parameters on the dynamic response characteristics of the slope is studied. Results show that the dynamic response of seismic acceleration presents obv...