Type Selection of Arches in Primary Support of Loess Tunnel with Small Interval under Shallow Buried & Unsymmetrical Pressure

Abstract:

The problem of arches selection in primary support of loess tunnel is one of the problems that are now focused on. Based on the two type support of gird and shaped steel, the plastic zone and internal forces are mainly analyzed, by means of numerical simulation, in the loess tunnels with small interval under shallow buried & unsymmetrical pressure. Analysis results indicate that the internal forces in the gird support is slightly smaller than that of the shaped steel support, and the plastic zones are almost the same in the two type support; so it is suggested that the grid support should be adopted in the design of such tunnel from the comprehensive analysis.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 1656-1659
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.1656
• Online since: May 2012
• Authors: Zhong Ming Su, Xiao Feng Wang, Rui Liu
• Keywords: Arches Selection, Grid Support, Loess Tunnels with Small Interval, Shallow Buried and Unsymmetrical Pressure, Shaped Steel Support

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