高地震区公路隧道地震动力响应分析  

Analysis for Seismic Dynamic Responses of Highway Tunnel in High Earthquake Intensity Area

作　　者：朱长安[1] 高波[1] 索然绪[2] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031 [2]西安公路研究所,陕西西安710054

出　　处：《岩土工程技术》2008年第5期232-235,共4页Geotechnical Engineering Technique

摘　　要：基于土-结构相互作用理论,对高地震区一实际重大工程的公路隧道洞口段结构进行了抗震计算,得到了衬砌结构各控制点的位移、加速度及内力响应规律。结果表明:在人工合成地震波条件下,衬砌墙脚、拱腰为抗震薄弱位置;结构的加速度波形与输入波形相似;这些结果为抗震设计提供了一些依据。Based on soil-structure dynamic interaction theory, aseismatic calculation is used for the analysis on portal section of highway tunnel for an important practical engineering project. The response of displace, acceleration and internal forces of structure are described. Results show that the locations of the basement of sidewall and the hance are weak points of aseismic under the situaition of artificial seisimic wave. The waveform of acceleration of structure is similar to the one input. These results provide some references for aseismic design.

关 键 词：高地震区 公路隧道 隧道洞口段 粘性边界 

分 类 号：P315.9[天文地球—地震学]