Papers by Author: Qi Xin Yang

Abstract: The energy method was used to analysis the deformation of acrylic waterproof membrane under the uniform load and to calculate the maximum central deflection according to the clamped circular plate. Because the shape of the deformation of waterproof membrane bulge was similar to semi-ellipsoid, the curve length corresponding to the maximum central deflection was calculated by elliptic equation. According to the curve length, the deformation could be calculated under the different water pressure and membrane thickness. Comparing the deformation with the maximum elongation ratio, the water pressure and the thickness of waterproof membrane which ensure the safety could be calculated in theory. If the water pressure was known, the thickness of spray-membrane could be determined in the tunnel engineering.

Abstract: The energy method was used to analysis the flexural property of acrylate waterproof membrane in local loads during the period of construction and service. The membrane was formed by spraying-membrane waterproof technique for tunnel engineering. The maximum central deflection of the clamped circular plate was calculated in the uniformly distributed and concentrated loads. The minimum safety thickness was calculated in theory during the course of using. It was expected to provide theoretical reference for the further improving of spraying-membrane waterproof technique.