摘要
以青藏铁路工程抗震设计与地震加固为应用背景,基于冻土场地路基的若干典型工况,开展多年冻土场地路基地震响应动应力性状的研究工作。研究表明,与不同的场地地形条件相比,冻土层对路基地震响应动应力的影响更加突出,尤其是含冻土层路基的地震动应力幅值、频率较不含冻土层路基的地震动应力幅值、频率大得多,因而冻土层的存在可能加剧了路基的震害响应。
Based on several typical roadbeds case, against the background of seismic design and earthquake strengthening of Qinghai-Tibet Railway engineering, dynamic stress property of roadbed ground motion response on permafrost site is studied. It indicates that the existing of frozen ground has great influence on roadbed earthquake response, especially the stress values of roadbed with frozen soil are larger than that of without frozen soil.So the existing of frozen ground will increase the earthquake damage to roadbed.
出处
《地震工程与工程振动》
CSCD
北大核心
2004年第1期117-121,共5页
Earthquake Engineering and Engineering Dynamics
基金
中国科学院知识创新工程重大项目(KZCX1-SW-04)
国家自然科学基金项目(40071021)
关键词
地震加固
抗震设计
冻土
路基
地震动应力
青藏铁路工程
dynamic stress of earthquake ground motion
roadbed
permafrost site
Qinghai-Tibet Railway engineering
