To numerical approach for calculation of underground structures

Abstract

The new approach for numerical calculating of stress and strain state of underground structures is presented in this issue. The advantage of this method is using in design scheme a real diagram of concrete and reinforcement materials. Also, these calculations are allowed to trace the process of deformation of reinforced concrete in each of the sections of the structure. In the technique, static calculations of reinforced structural elements when changing their initial conditions or stress state after strengthening are carried out taking into account new data. A three-dimensional finite element calculation is also carried out while taking into account regulatory loads. Assessment of levels of tangential and tensile stresses in walls makes it possible to target reinforcement and parameters of monolithic stiffness belts. Numerical results for discussion are presented in this paper.

Underground polymeric l-shaped pipeline vibrations under seismic effect

“…It was assumed that any structure is elongated, branching one both along the strike and in-depth, with complex rigid and flexible pipe joints in a complex node. In [4][5][6][7][8][9][10][11][12][13], the seismodynamics of the underground structures under the harmonic and real seismic impacts are numerically studied. *Corresponding author: nematilla81@mail.ru…”