装配式地下结构用防水胶条密封性能试验研究

Experimental Study on Sealing Performance of Waterproof Rubber for Assembled Underground Structure

装配式地下结构在拼缝处的防水密封性能是影响工程质量的关键,本文结合预制拼装结构的工程特点,针对目前普遍采用的四种防水胶条,开展了其在凹槽下的压缩性能和密封性能的试验研究。试验考察了胶条压缩力,压缩量和极限水压之间的耦合关系,对比分析了混凝土表面有无防水涂料下,试验水压随时间的变化规律。通过本次研究,为后续工程应用中的胶条选型提供了指导,也为胶条防水性能的检测方法提供了参考。

The waterproof performance of joints is the key to the quality of assembled underground structure.Based on the engineering characteristics of the assembled structure,this paper studies the compression performance and sealing performance of the four waterproof rubbers currently common used in the groove.The coupling relationship between pressure,compression and extreme water pressure were examined in this test,the change of water pressure with time under the presence of waterproof coating on concrete surface or not were compared and analyzed.This study provides guidance for the selection of rubbers in subsequent engineering applications,and also provides a reference for the detection method of waterproof performance.