期刊论文

Experimental study on seismic dynamic response of bridge-tunnel lap under multi-direction seismic loads

中文

中国安全科学学报

1003-3033

2018

28

9

87-91

10.16265/j.cnki.issn1003-3033.2018.09.015

国家自然科学基金资助（51408617）；

本校为第一机构

为探明多向地震作用下软弱围岩高速公路桥隧搭接段的地震动力响应特性,开展尺寸比例为1∶50的振动台模型试验,以汶川波作为试验加载地震波,在不同加载方式下,测试桥隧搭接段各测点加速度放大系数值,分析其纵向、横向和竖向的加速度响应特征,并明确不同方向的地震波对桥隧搭接段结构的影响。结果表明:横向地震波引起的加速度响应普遍大于竖向地震波;纵向和横向双向耦合方式下加速度响应普遍大于其他耦合方式的加速度响应;双向地震耦合引起的纵向和横向加速度响应均大于单一方向的加速度响应。

In order to explore the seismic dynamic response characteristics of weak rock at bridge-tunnel lap under multi-directional seismic loads, shaking table model tests with a scale of 1∶50 were carried out. Wenchuan wave was taken as the test loading seismic wave, the acceleration amplification coefficient values of each measuring point in the link of bridge and tunnel under different loading modes were tested, and the characteristics of the vertical, horizontal and vertical acceleration responses of the link were analyzed, so as to clarify the in...