AN INVESTIGATION ON SEISMIC ANALYSIS OF SHALLOW TUNEELS IN SOIL MEDIUM
Buried tunnels with circular cross section, such as urban undergrounds are very popular in transportation engineering. The seismic behavior of such structures during operation is of importance. There exist different closed form solutions, such as Penzien and Wang methods for seismic evaluation of shallow tunnels. In the present research, these analytical methods are employed to analysis tunnel lining forces, constructed in soft to hard soil with different mechanical properties and constant shear strain. A numerical model, based on finite element method, was then developed to compare the analytical and numerical method outputs when the tunnel is under seismic loads. For this purpose seven types soil, soft soil to very dense sand, was selected and analysis was carried out. The analysis shows relative error in analytical methods. Also it is shown that with increasing soil stiffness, the induced circular stress in lining is reduced
Buried tunnel Closed form solution Shear strain Seismic analysis
J. Bolouri Bazaz V. Besharat
Dept. of Civil Engineering, Ferdowsi University, Mashhad. Iran Dept. of Engineering, Islamic Azad University, Science and research branch, Tehran, Iran
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）