Abstract
The rise in highway design and construction requires ensuring the reliability of these infrastructure projects. This is especially important for construction on weak soils. The number of design solutions is equally on the rise for reinforcing the grounds of soil transport structures. Examples include the use of various types of piles, and structures made of sand, gravel and other draining soils placed in a shell of geosynthetic material. The article presents the results of the authors' work on the substantiation and implementation of various constructive solutions to strengthen the insufficiently strong bases on railway and highway construction facilities (railway lines Losevo-Kamennogorsk, Moscow-Kazan high-speed railroad, Moscow-Saint Petersburg high-speed highway, etc.).
Highlights
It is necessary to perform several computations to evaluate the effectiveness of constructive and technological solutions and choose the right method of strengthening the roadbed basis of transport infrastructure facilities.These computations include: 1. Computations of the stress-strain state of the structure – These computations help determine the compliance of constructive and technological solutions to the requirements of current regulations and specification parameters.2
The present article is devoted to the analysis based on the first type of computations
Today on the operating Russian railways and highways, the application of rigid concrete, ferroconcrete or timber piles is the main method of subgrade reinforcing of embankments
Summary
It is necessary to perform several computations to evaluate the effectiveness of constructive and technological solutions and choose the right method of strengthening the roadbed basis of transport infrastructure facilities. The embankment strengthening was achieved through applying pulse discharge technology, using berms and timber pile grating consistently with four, three and two piles This technology uses different kinds of piles, and in additional to economic constraints, has some other disadvantages, notably problems of corrosion and putrefaction. These circumstances led to a search for other types of soil strengthening and prevention of subgrade deformations. 2 Evaluation of options for strengthening the subgrade in the facilities of the railway line Losevo-Kamenogorsk and SanktPetersburg highway
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