期刊论文

Shaking table test and numerical simulation study on unsymmetrical loading tunnel model

Jiang, Xue-Liang(1067109529@qq.com)

中文

振动工程学报

1004-4523

2017

30

4

660-669

10.16385/j.cnki.issn.1004-4523.2017.04.018

国家自然科学基金资助项目(51204125)；

本校为第一且通讯机构

根据动力模型试验相似关系,设计了一个比尺为1:10的偏压隧道模型,开展大型振动台模型试验,研究地震作用下偏压隧道加速度动力响应规律,模型试验以汶川波作为输入波,采用水平(X)向、竖直(Z)向和水平竖直(XZ)双向3种加载方式。利用MIDAS/NX有限元软件进行数值模拟,并与模型试验结果对比分析。研究表明:衬砌测点的加速度时程曲线与输入地震波特征相似,卓越频段和傅氏谱谱值都增大。X向激振时,加速度放大效应不明显且放大系数随激振幅值的增大而略有减小;竖向波对衬砌加速度动力响应影响明显大于水平地震波,表现为加速度放大效应显著;XZ双向激振时,相比于单向波而言测点加速度放大系数有增大、也有减...

Based on the similar relationship of dynamic model test, a large-scale shaking table model test of a unsymmetrical loading tunnel model with the geometric scale of 1∶10 was performed to study the acceleration dynamic response under earthquake loads. Wenchuan seismic wave with three excitation directions including horizontal(X) direction, vertical(Z)direction and horizontal and vertical(XZ)direction were used as the excitation waves in the model test. Numerical simulation was carried out by MIDAS/NX finite element software and the results of nu...