摘要
为确定十堰—天水高速公路茶镇隧道二次衬砌合理支护时机,保证隧道施工中充分发挥围岩的自承能力,采用层次分析法对地表沉降、拱顶下沉、水平收敛等隧道变形监测数据进行了多影响因素的权重划分,给出了排序,进而给出二次衬砌的最佳支护时机为开挖后第35 d。预测结果与监测数据回归分析结果一致。
In order to determine a reasonable support time for secondary lining of Chazhen tunnel in the expressway between Shiyan and Tianshui and ensure the self-supporting capacity of surrounding rock during the tunnel construction,the weight division of multiple influencing factors was made for tunnel deformation monitoring data including the surface subsidence,vault settlement and horizontal convergence by using analytic hierarchy process,the rank of these factors were put forward and the optimum support time for the secondary lining was identified as35d after the excavation T he prediction results are consistent w ith the regression analysis results of monitoring data.
作者
李宝平
牛文榀
秦威
LI Baoping;NIU Wenpin;QIN Wei(School of Civil and Architecture Engineering,Xi'an Technological University,Xi'an Shaanxi 710021,China)
出处
《铁道建筑》
北大核心
2017年第9期92-95,共4页
Railway Engineering
基金
陕西省教育厅专项科研计划项目(16KJ1386)
关键词
公路隧道
支护时机
数值计算
二次衬砌
层次分析法
监控量测
Highway tunnel
Support time
Numerical calculation
Secondary lining
Analytic hierarchy process
Monitoring measurement
