岩土工程学报Issue(1)：83-90,8.DOI:10.11779/CJGE201501009
基于模型试验的盾构隧道纵向刚度分析
Longitudinal rigidity of shield tunnels based on model tests
摘要
Abstract
In order to explore the performances of longitudinal deformation and the efficienct values of bending rigidity of shield tunnels, straight-jointed,stagger-jointed and uniform longitudinal models are investigated based on model tests and similarity theories. The values of longitudinal deformation of three kinds of longitudinal models under loads are measured by a data acquisition system. The rules of longitudinal deformation and the efficiencies of bending rigidity of the straight-jointed stagger-jointed, and uniform longitudinal models under all loading stages are obtained, by adding the concentrated loads on the models. The comparative analysis of the test results shows the linear relationship between the longitudinal deformation and the loads. The range of the efficienct values of longitudinal bending rigidity is between 0.18 and 0.39 under straight-jointed condition, and in the stagger-jointed model it is between 0.20 and 0.40. What’s more, the performances of the longitudinal bending of straight-jointed and stagger-jointed tunnels are similar, and the stagger-jointed effect is not obvious to the longitudinal deformation of shield tunnels. This study may provide some references for the design of shield tunneling in China.关键词
盾构隧道/管片结构/模型试验/纵向刚度Key words
shield tunnel/segmental structure/model test/longitudinal rigidity分类
建筑与水利引用本文复制引用
叶飞,杨鹏博,毛家骅,毛燕飞,陈治,孙昌海..基于模型试验的盾构隧道纵向刚度分析[J].岩土工程学报,2015,(1):83-90,8.基金项目
国家自然科学基金项目 （）
