Technological Features of Construction and Reconstruction of Geotechnical Structures in the Arctic Zone

Designs

Grigory I. Nak¹  Taisiya V. Shepitko²  Svyatoslav Ya. Lutsky²  Alexander M. Cherkasov³ 

[1] Construction Projects Department of Regional Significance at JSC “Yamaltransstroy”, 39 Obskaya Street, 629404 Labytnangi, Russia;Department of Railway Design and Construction, Russian University of Transport (MIIT), 9b9 Obraztsova Street, 127994 Moscow, Russia;Department of Transport Construction in Extreme Conditions, Russian University of Transport (MIIT), 9b9 Obraztsova Street, 127994 Moscow, Russia;

关键词: geotechnical structure;    technology;    construction;    reconstruction;    permafrost zone;   

DOI  :  10.3390/designs6020034

来源: DOAJ

【 摘 要 】

Production engineering methods and geotechnical instrumentation for the construction and reconstruction of railway beds in high temperatures in the Arctic zone are proposed. High-technology construction facilitates the development of transport infrastructure of the energy-producing industries in the Arctic. The example of the Northern Latitudinal Railway (NLR) highlights the probability of dangerous cryogenic processes and phenomena during works, such as waterlogging and the structural decline of the active soil layer, the development of taliks, and frost cracking, which lead to a decrease in bearing capacity of soil. The features of the construction and production plans used at the sites of railway embankment reconstruction with heavy-duty equipment are outlined. New process control methods have been developed based on the selection of and systematic changes in the parameters of maximum permissible construction loads depending on the results of geotechnical structure monitoring. The structural diagram of high technology for strengthening the weak subgrade soil under the conditions of talik development is substantiated. In order to regulate intensive process parameters, the vehicle fleet needs to be equipped with positioning devices and automation process control systems. The effectiveness of process control in terms of improving the reliability and accelerating roadbed consolidation is substantiated.

【 授权许可】

Unknown