Study on The Two-Dimensional Analysis Model of A Rectangular Shaft That Takes into Account The Three-Dimensional Effects

Abstract

This paper describes a method of reflecting the three-dimensional effects in a two-dimensional structural analysis for the design of a rectangular shaft for railway tunnels based on the result of three-dimensional structural analysis for different values of its depth to width ratio. We conclude that in the design of rectangular shaft using two-dimensional structural analysis, the model is divided into the lateral section and longitudinal sections. The two-dimensional frame analysis requires the use of the contributing load based on the Grashof-Rankine equation for the mode in the lateral direction, and the use of the contributing load based on the new equation proposed in this paper for the longitudinal direction.