THE USE OF PRECAST-MONOLITHIC SLABS WITH THE LOWER VAULTED SURFACE IS SLIGHTLY DEEPENED IN UNDERGROUND PEDESTRIAN CROSSINGS

Abstract

The article considers the ways of improvement of designs of overlappings slightly deepened underpasses. The proposed new design solution for precast-monolithic slabs slightly deepened underground pedestrian crossings with the lower vaulted surface is made on a permanent form of arched profiled flooring. The evaluation of the stress-strain state of beams in linear and nonlinear formulation, are compared. A comparison of technical and economic parameters of basic types of overlaps underpasses.

Keywords

• weakly deepened tunnels
• underground pedestrian crossings
• precast-monolithic overlap
• the spacer element interaction