Study on the tunnel shape and soil-lining interaction influencing the lining behavior under seismic loading  

作　　者：Van Vi Pham Ngoc Anh Do Piotr Osinski Ngoc Thai Do Daniel Dias 

机构地区：[1]Sustainable Development in Underground Engineering Research Team,Hanoi University of Mining and Geology,Hanoi,Vietnam [2]Department of Underground and Mining Construction,Faculty of Civil Engineering,Hanoi University of Mining and Geology,Hanoi,Vietnam [3]Department of Geotechnical Engineering,Institute of Civil Engineering,Warsaw University of Life Sciences-SGGW,Warszawa,Poland [4]Laboratory 3SR,Grenoble Alpes University,Grenoble 38400,France

出　　处：《Earthquake Engineering and Engineering Vibration》2024年第4期845-862,共18页地震工程与工程振动（英文刊）

基　　金：supported by Vietnam Ministry of Education and Training under Grant No. B2022-MDA-06

摘　　要：The response of tunnels subjected to seismic loading is a complex mechanism and depends not only on the seismic nature but also on tunnel structure and surrounding soil properties.The individual behavior of circular,rectangular,and sub-rectangular tunnels subjected to seismic loadings has already been studied in the literature.In the present research,two case scenarios of circular,rectangular tunnels and four sub-rectangular shaped tunnels,with similar cross-section areas,were adopted to perform a comprehensive numerical investigation.The purpose of the study was to determine the mechanical behavior of tunnels of different shapes,depending upon seismic conditions.Analyses were performed by considering the influence of soil-lining interaction,soil parameters,and lining thickness,as well as lining rigidity.Computations were performed for no-slip and full-slip conditions.The results indicate that the tunnel shape design is of great importance when regarding the mechanical behavior of the surrounding soil.This concerns no-slip as well as full-slip soil-lining interaction,especially when the lining is subjected to seismic loading.Moreover,it is shown that changes in incremental bending moments for circular,rectangular and sub-rectangular tunnels that depend upon the soil-lining interaction conditions differ significantly.

关 键 词：tunnel shape soil-lining interaction seismic loading internal forces numerical analysis 

分 类 号：U451.4[建筑科学—桥梁与隧道工程]