岩土工程学报2026，Vol.48Issue(2)：311-319,9.DOI:10.11779/CJGE20241127
场地的塑性变形对装配式马蹄形隧道结构地震响应的影响
Influence of site soil plastic deformation on seismic response of precast horseshoe-shaped tunnel structure
摘要
Abstract
Because of strong nonlinear features of soils,the site always plastically deforms after a seismic excitation,which will have additional loading effects for underground structures buried in soil.But the effects are not taken into account in the current seismic design methods,which may bring up safety risk for underground structures.In the paper,the free-field and non-free-field site's plastic deformation and their influence on the seismic responses of a tunnel structure are analyzed,using the results of 1g shaking table model tests of a precast horseshoe segmental tunnel and the corresponding free-field site.Results show that when the site plastically deformed,the earth pressure distribution around the tunnel obviously varied.It leading to the increase of the bending moment and the structural deformation is more concentrated at the connection regions.The structure also has some vertical shrinking and horizontal expanding deformation responses.A region of the structure has a hard connection with the soil,which results in earth pressure concentration at the region.Therefore,the computation under the unbalanced earth and water static pressure condition is suggested to be added in the design of an important underground structure,which could help to cover the internal force response might be have.关键词
土的塑性变形/装配式马蹄形隧道结构/1g振动台试验/地下结构抗震/暗挖装配式隧道Key words
soil plastic deformation/precast horseshoe segmental tunnel/1g shaking table test/seismic resistance of underground structure/undercut precast tunnel分类
建筑与水利引用本文复制引用
江志伟,许成顺,杜修力,谷音,吴成刚..场地的塑性变形对装配式马蹄形隧道结构地震响应的影响[J].岩土工程学报,2026,48(2):311-319,9.基金项目
国家自然科学基金杰出青年基金项目(52225807) （52225807）
国家自然科学基金项目(52278159) （52278159）
国家自然科学基金青年基金项目(52008233)This work was supported by the National Science Fund for Distinguished Young Scholars(Grant No.52225807) （52008233）
National Natural Science Foundation of China(Grant No.52278159) （Grant No.52278159）
Youth Program of National Natural Science Foundation of China(Grant No.52008233). （Grant No.52008233）
