Two-fabric one-membrane sliding layer paving method and tensioning device thereof

Abstract

The invention discloses a two-fabric one-membrane sliding layer tensioning device. A two-fabric one-membrane sliding layer (4) comprises a lower geotextile positioned on a bottom layer, a geomembrane positioned on an intermediate layer and an upper geotextile positioned on an upper layer. The two-fabric one-membrane sliding layer tensioning device comprises a tensioner (1) of which one end is fixed on the geomembrane and the upper geotextile while the other end is fixed on a stationary fixing device (2). In the tensioning device, the geomembrane and the geotextile are tensioned by connecting one end of the tensioning device with the geomembrane and the upper geotextile and connecting the other end of the tensioner with the stationary fixing device, so as to ensure the close adhesion of two fabrics and one membrane and effectively solves the problem of blistering of the two fabrics and the one membrane before casting concrete; and the sliding layer has the characteristics of simple structure, easy process and convenient assembly and disassembly. The invention also discloses a two-fabric one-membrane sliding layer paving method using the tensioning device.

Description

technical field [0001] The invention relates to the technical field of laying sliding layers of CRTS II slab-type ballastless track, and more specifically, relates to a method for laying sliding layers of two cloths and one film and a tensioning device thereof. Background technique [0002] my country's passenger-dedicated railways are developing rapidly, but the CRTS II slab ballastless track is still a new technology in China, and there is no similar experience to learn from. The two-cloth-one-membrane sliding layer is an important link in the construction of the ballastless track base plate, which includes a geomembrane that prevents water leakage and a lower layer of geotextile and an upper layer of geotextile that are respectively located on the lower and upper layers of the geomembrane. [0003] The laying steps of two cloth and one film sliding layer generally include: [0004] ① Thoroughly clean the bridge deck, especially for oil pollution and other pollution, to e...

AI Technical Summary

Problems solved by technology

[0011] (1) Deformation caused during storage and transportation;

[0012] (2) The construction of the two-cloth-one-film sliding layer is affected by the temperature, and the film is not suitable for spreading, or the temperature difference is large after the low-temperature laying is completed and before the concrete is poured, causing drumming and deformation;

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