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An analysis of hydro-meteorological and engineering-geological conditions of the Russia's Eastern Siberia and the Far East is provided in the article.
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Citations
... Introduction With the increase of the traffic flow of the expressway, some of the original expressways need to be reconstructed and expanded. The expansion construction in the area with poor geological conditions puts forward higher requirements for the widening structure [1][2]. How to ensure the overall stability of the widened subgrade structure, reduce the differential settlement between the old and the new subgrade joint, and prevent the occurrence of pavement longitudinal cracking has become the focus of research [3]. ...
The finite difference element software FLAC 3D was used to simulate the reconstruction and expansion project of Xinle-Yuanshi expressway. The model of reinforced soil slope widening subgrade was established. Based on the comparison of the simulation data of the sections with different heights and structural forms, the structural behavior of reinforced soil structure in subgrade widening project was analyzed. The law of structural deformation and construction control technology were summarized.
... Development of underground space and development of transport network is a distinctive feature of modern urban construction [1][2][3]. Currently, the problem of soil consolidation in new construction, reconstruction and repair of existing buildings and structures is relevant [1,[4][5][6][7][8]. Violation of integrity of structure of consolidated massif of soil is inadmissible in the conditions of dense city building at technological production. ...
Issues of development of compositions of injectable materials on inorganic basis for underground and transport construction are considered in the paper. Inorganic binders for aqueous suspensions for strengthening of low-strength sandy and debris soils by injection into the fortified massif are proposed. The use of silica gel in combination with hydrated lime for injectable aqueous suspensions is justified. The influence of superplasticizer on the technological properties of suspensions is shown. The properties of micro-cement of different compositions are presented. Optimal ratios of components were determined. The following properties of aqueous suspensions have been studied: viscosity, sedimentation and penetrating power. The viscosity was up to 40 s, sedimentation up to 1.4%. Soil-concrete obtained by injecting the aqueous suspension based on composite binders has the compressive strength in the range of 3.3-6.2MPa.
