Optimization Design of Double-row Piles Composite Gravity Arch Supporting System

摘要

In the paper, through finite element three-dimensional numerical simulation, deformation and internal force variation of double-row piles composite gravity arch supporting system has been analyzed with changing key design parameters such as double-row pile diameter, distance between rows, arch height and arch thickness. Optimization design analysis has also been carried out for this new supporting system.Results show that appropriate increasing pile distance can be used to decrease lateral displacement of supporting system, but it should not be increased blindly for supporting effect. Otherwise the determination method of optimal arch height and thickness values are also put forward in the paper.