期刊论文

LARGE-SCALE SHAKING TABLE TEST STUDY ON SEISMIC RESPONSE CHARACTERISTICS OF ROCK SLOPE WITH SMALL SPACING TUNNEL

Niu, Jia-Yong(niujiaying666@sina.com)

中文

工程力学

1000-4750

2017

34

5

132-141 and 147

10.6052/j.issn.1000-4750.2015.11.0936

51204125:国家自然科学基金 51404309:国家自然科学基金

本校为第一且通讯机构

为研究含小净距隧道岩石边坡在地震作用下的动力特性,设计了一个比尺1 : 10的含小净距隧道岩石边坡的大型振动台试验模型,试验以汶川波(WC)作为振动台激振波,釆用水平(x)向、竖直(z)向和水平竖直(xz)向三种激振方式,研究地震作用下边坡的加速度响应特性和动位移响应特性。试验结果表明:1)边坡加速度放大系数沿坡面向上呈现出先减小后增大的非线性变化特征,边坡会改变输入地震波的频谱成分,对高频段地震波存在滤波作用。2) x、z单向激振下边坡加速度放大系数随着加载加速度峰值的增大而增大,xz双向激振下则随着加载加速度峰值的增大而减小。3)以3/5坡高为界,此高度以下,边坡对竖向地震波的放大作...

In order to study the dynamic characteristics of rock slope with small spacing tunnel under seismic action, a large-scale shaking table slope model test was designed. The geometric scale was 1:10. In the model test, the Wenchuan (WC) seismic wave was used as the excitation wave to study the characteristics of acceleration response and displacement response of the rock slope model. The excitation directions included the horizontal direction (x), the vertical direction (z) and the horizontal and vertical direction (xz). The results show: 1) Upwar...