期刊论文

Large-scale shaking table model test study of unsymmetrical loading neighborhood tunnel with shallow depth

Lian, P.

中文

应用力学学报

1000-4939

2017

34

3

456-463

10.11776/cjam.34.03.C022

国家自然科学基金

本校为第一且通讯机构

浅埋偏压小净距隧道具有与其它形式隧道不同的受力特点,其地震响应特性也必然不同于其它隧道。基于相似理论设计并完成了浅埋偏压小净距隧道大型振动台模型实验,研究了小净距隧道分别在X(水平)向、Z(竖直)向、XZ双向(水平竖直同时输入)多种工况汶川地震波作用下隧道衬砌加速度和动应变响应规律。实验结果表明:①衬砌加速度受地震波的入射方向影响较大,且Z向的影响大于X向,XZ双向的影响大于单向,左洞隧道的加速度响应大于右洞隧道;②衬砌应变受地震烈度的影响较大,隧道衬砌在地震作用下承受拉压循环荷载,以受拉为主,右洞隧道衬砌的动应变响应大于左洞隧道;③综合衬砌加速度与动应变的响应分析,左...

Unsymmetrical loading neighborhood tunnel with shallow depth is compared with tunnels of other forms; their stress characteristics and response under seismic action are quite different. Based on similar theory, a large-scale shaking table model test of unsymmetrical loading neighborhood tunnel with shallow depth is completed. Neighborhood tunnel's seismic response characteristics of acceleration and dynamic strain in Wenchuan wave with X (horizontal), Z (vertical) and XZ (horizontal and vertical)excitation direction are studied in the test of m...