Abstract
In this paper is presented the results of calculations of reinforced concrete structure of metro station in the form of cupola located at the intersection of interstation tunnels. The constructive solution of station is economical, allows diversifying its architecture and using the internal space for placing objects of the national economy. One of the important design stages is the assessment of the stress-strain state of structure with different boundary conditions when it is exposed to external loads. It is assumed that deformable environment surrounding the tunnel station is elastic and is modeled by discrete bearing reaction located in contact with the station. The structure is modeled by finite shell elements. As the result of calculation the principal stresses and moments in its sections are determined. The obtained data can be made by designers in determining of structural solution, dimensions and initial sections selection of reinforcement elements.
Highlights
The significant increase in construction quantities of metro tunnels requires the meaningful expanding of capacities of scientific-technical potential
In contrast to cupola cover the trough element together with the support ring form strong structure, which perceives the thrust of arch
The shell part of cupola structure is made by prefabricated elements of ribbed plates, 55 and 40 cm thick (Figure 2)
Summary
The significant increase in construction quantities of metro tunnels requires the meaningful expanding of capacities of scientific-technical potential. The constructive solution of metro station, which received a patent No 4386 can be used at the intersection crossing of interstation tunnels [7]. Thin-walled spatial structure of the vault and its location at intersection of tracks in the center of station increases the costeffectiveness of construction (Figure 1). The station contains vault 1 as in the form of thinwalled cupola with strengthened heel 2, platforms and tracks of one and another line 3, which intersect in the center of the station. The 1/2 - 1/3 of height of cupola comes to the surface of the ground
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