隧道侧墙裂缝特性与变化规律研究  

Study on Characteristics and Change Law of Tunnel Sidewall Cracks

作　　者：危鼎[1] 王铁梦 王桂玲[1] 苗冬梅[1] 陈成林[1] 王宇[1] 

机构地区：[1]中国建筑第八工程局有限公司,上海200120 [2]中建王铁梦混凝土研究室,上海200120

出　　处：《施工技术（下半月）》2012年第4期27-29,34,共4页Construction Technology

摘　　要：通过对某条隧道侧墙裂缝特征的统计分析,得出隧道侧墙裂缝主要有3种类型,分别是浇筑段内的竖向收缩裂缝、施工缝裂缝与伸缩缝裂缝。伸缩缝裂缝是结构上最宽、随环境温度变化最活跃、也是最难治理的裂缝。因此对隧道这种超长结构宜采用"跳仓法"施工,从而取消永久性伸缩缝,结构上只保留分仓施工缝,最后形成整体无缝结构。Taking an actual tunnel as the background,statistic analysis on the characteristic of tunnel sidewall cracks showed tunnel sidewall cracks can be mainly divided to three kinds,which respectively were contraction cracks of each casting sections,construction joint cracks,expansion joint cracks.The expansion joint cracks were the most widest kind and varied most actively following the ambient temperature,and were most difficult to treat.Thus alternative bay construction method was suitable to tunnel,because the expansion joints could be canceled,only construction joints existed in structure,and at last a whole without seam structure could be achieved.

关 键 词：隧道 裂缝 施工缝 伸缩缝 

分 类 号：U455[建筑科学—桥梁与隧道工程]