Subgrade Design and Construction Technology for Saline Soil Area

Abstract

The design scheme and engineering construction technology are proposed for an accommodation highway subgrade on the basis of forming reasons and hazard analysis of saline soil in Xinjiang region. In the design, major measures adopted include basement replacement, setting aeolian sand layer and composite geotextile layer, strengthening the subgrade waterproofing and drainage, antiseptic treatment of structures, etc. This paper introduces the subgrade design and construction technology, of which the implementation and application on the test section have achieved a favorable effect and can be taken as the basis for design and construction of similar saline soil subgrade.

Application Research of New Cementitious Composite Materials in Saline Soil Subgrade Aseismic Strengthening

“…Wen et al [4] determined the key technical parameters for soil layer grading of saline soil subgrades, which provided a technical reference for solidifying saline soil subgrades. Song et al [5] used the soil replacement method to solidify the saline soil subgrades, and it had a favourable strengthening effect. Zhang et al [6] studied the influence of overburden load on the salt expansion of the saline soil subgrade with different salt contents, water contents, and initial dry density conditions, and they found that the salt expansion rate of the saline soil decreased significantly with the increase of the overburden pressure.…”