【作者】 周德培；

【Author】 Zhou Depei (Research Institute of Geotech.Eng.,Southwest Jiaotong University,Chengdu 610031)

【机构】 西南交通大学岩土所；

【摘要】 本文通过地质力学模型试验,研究了草庵隧道洞口段的抗震性能。该隧道洞口位于9度地震区,且处于偏压状态。本文的试验结果给出了隧道洞口段在高烈度地震荷载下的动力反应和破坏特征。讨论了洞口段设防长度,还指出了应加固的部位。更多还原

【Abstract】 The anti-seismic behaviour of the portal part of Cao An tunnel is studlied with the geomechanical model test.The portal part under the one side earth pressure is situated in high earthquake intensity zone.Its dynamic properties under high earthquake intensity are discussed on the basis of the test results,together with its anti—seismic strengthening Length.This paper also analyzes its rupture characteristics in detail,and showes which locations of the portal part should be reinforced.更多还原