Numerical Study on Direct Shear Test of Composite Shotcrete with Sprayable Waterproofing Membrane

IF 0.4 Q4 ENGINEERING, GEOLOGICAL Journal of the Korean Geosynthetic Society Pub Date : 2018-01-01 DOI:10.12814/JKGSS.2018.17.4.189
Kicheol Lee, Soon-Ju Choi, Dongwook Kim, Chulho Lee
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引用次数: 1

Abstract

A sprayable waterproofing membrane which has relatively high adhesive property onto concrete enables faster construction with better waterproof performance compared with a conventional sheet membrane. However, the sprayable waterproofing membrane is a recently developed material and its performance and behavior with structures are not sufficiently reported. Therefore, in this study, the shear behavior of sprayable waterproofing membrane was numerically analyzed using the results of previous studies of composite shotcrete with sprayable waterproofing membrane. From the previous study, shear behavior of shotcrete with sprayable waterproofing membrane was different from shotcrete case and there was a limitation to express the behavior of the interface in general shear strength method. Therefore, in this study, the direct shear test was numerically simulated using two contact models, and then the best suitable method to express the shear behavior of the sprayable waterproofing membrane was suggested.
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喷淋防水膜复合喷射混凝土直剪试验数值研究
与传统的片状防水膜相比,可喷涂防水膜在混凝土上具有较高的粘接性能,施工速度更快,防水性能更好。然而,可喷涂防水膜是一种新近发展起来的材料,其与结构的性能和行为还没有得到充分的报道。因此,在本研究中,利用前人对喷射防水膜复合喷射混凝土的研究结果,对喷射防水膜的剪切性能进行了数值分析。从以往的研究来看,喷淋防水膜喷射混凝土的抗剪性能与喷淋混凝土不同,一般抗剪强度法表达界面抗剪性能存在局限性。因此,本研究采用两种接触模型对直剪试验进行了数值模拟,进而提出了最适合的表达可喷防水膜剪切性能的方法。
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