新型反应性丁基橡胶防水材料防水性能试验和数值模拟研究

The Experimental and Numerical Study on Waterproof Performance of New Reactive Butyl Rubber Waterproofing Materials

摘要: 本文通过对内置不同防水材料的混凝土试样进行注水试验和数值模拟分析，研究新型反应性丁基橡胶防水材料的防水性能，并和传统钢板止水带性能进行对比。通过试验发现，含有传统钢板止水带的试样在角部出现渗漏水，而使用新型反应性丁基橡胶钢板止水带的试样没有渗水发生；弯折30˚的W型部材在试样一边的中点出现明显渗漏，与理论分析规律相一致。数值模拟分析从力学角度分析了不同防水材料和混凝土之间的应力变化特征，进一步验证了试验结果的正确性和不同防水材料的力学性能。根据试验和模拟结果指出，应保证防水钢板在90˚接缝位置的焊缝质量，同时对于新型防水材料，应避免安装过程中出现弯折而影响防水质量。

Abstract: This paper investigated the waterproof performance of the new reactive butyl rubber waterproof material by the laboratory test and numerical simulation on the concrete specimen containing different waterproof materials. The comparison with traditional steel plates was also included. The results showed that the obvious water leakage happened to the traditional steel plate, while the new reactive butyl rubber steel plate performed good waterproof performance under normal working conditions. The specimen containing new reactive butyl rubber waterproofing material with a W-section under a bending angle of 30˚ showed obvious leakage at the midpoint on one side of the specimen, following the rules of the theoretical analysis. The numerical simulation further confirmed the results of laboratory tests by analyzing the stress distribution between the concrete and different waterproof material. It noted that a good welding performance of the waterproof steel plate at the 90˚ corner should be ensured, and for the new reactive butyl rubber waterproof material, bending during the installation process should be avoided to guarantee the waterproof quality.