隧道工程环向施工缝张开度与止水条抗水压力关系的试验研究

Experimental study on relation between width of circular construction joint and water pressure resistance of water stop in tunneling works

首先从理论和施工角度分析了隧道现浇环向施工缝止水条的失效原因,然后从施工缝张开度的角度提出了膨胀止水条止水的原理,在此基础上建立了施工缝张开度与止水条抗水压力之间的关系,并进行了模型试验。最后,在理论分析和模型试验基础上得出了现浇隧道环向施工缝止水条选型与施工的技术要求。

Based on the cause analysis for failure of water stop of tunnel's cast in site circular construction joint from theoretical and constructional point of view as well as the working mechanism of expansive water stop proposed in terms of width of construction joint, the relation between width of circular construction joint and water pressure resistance of water stop is established and its model test carried out. Thus specifications for selection of the water stop and construction are obtained.