地下通道结构变形缝设置的若干思考  

Thinking of Constructing Structure Deformation Joint for Underground Passage

作　　者：谢明[1] 

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海市200092

出　　处：《城市道桥与防洪》2015年第3期180-184,17-18,共5页Urban Roads Bridges & Flood Control

摘　　要：针对目前明挖施工地下通道存在的变形缝渗漏水问题,拟从加大变形缝间距、减少变形缝道数方向出发,达到降低渗漏水风险点的目的。为此根据地下通道结构特点与混凝土自身特性,针对加大变形缝间距与早期混凝土收缩、季节性温差的关系进行了分析及有限元模拟计算,并提出加大变形缝间距所需采取的技术措施。经分析研究,在对温度作用进行分析并采取可靠的技术措施前提下,适当加大变形缝间距技术可行。Aiming at the leakage problem of deformation joint existing in the excavated underground passage now, it is proposed to increase the gap of deformation joint and to decrease the number of deformation joint in order to reach the objective of reducing the leakage risk point. Therefore, based on the structural feature of underground passage and concrete characteristic, the article analyzes the relationship of increasing deformation gap with early concrete constriction and seasonal temperature difference, and computes by the finite element simulation, and puts forward the technical measures taken for increasing the deformation gap.After the analysis and study, it is feasible to properly increase the deformation gap under the premise ofanalyzing the temperature action and taking the reliable technical measures.

关 键 词：地下通道 变形缝 渗漏 防水 

分 类 号：U412.373.1[交通运输工程—道路与铁道工程]