摘要
按照相似比制作隧道及衬砌模型,对不同围岩级别下大断面隧道衬砌裂纹扩展机理进行模型试验研究.通过收集试验相关数据得到高速公路隧道在不同荷载条件下,衬砌裂纹扩展的径向位移特征和二衬与初衬间接触应力特征.对隧道衬砌模型进行数值模拟计算,并将计算结果与模型试验结构进行对比分析,分析表明数值模拟计算结果与模型试验结果基本上保持一致.
Using similarity theory, a tunnel model text is conducted for the failure modes of large cross-section tunnel lining under different levels surrounding. By analyzing the dam of the model text of single-arch large cross-section tunnel under the different condition, this paper gets the feature of the radial displacement of secondary lining structure and the feature of the contact stress between secondary lining structure and initial lining structure. By the numerical simulation calculation of the tunnel lining model and comparing it with thc model test structure analysis, thc results of numerical simulation with the results of model experiment is consistent.
出处
《湖南文理学院学报（自然科学版）》
CAS
2011年第2期59-61,91,共4页
Journal of Hunan University of Arts and Science(Science and Technology)
基金
湖南省自然科学基金(09JJ1008)
关键词
扩展
公路隧道
隧道衬砌
模型试验
数值模拟
extcnsion
highway runnel
tunnel lining
model experimcnt
numerical simulation
