关键词: 地基基础工程, 土钉支护, 管线渗漏, 土钉轴力, 安全性

Abstract:

To study effect of pipeline leaking nearby on safety of soil nailing retaining system, the paper presents a numerical model, aiming at an engineering accident example. The ABAQUS model simulates effect of different infiltration location on axial force of soil nails, horizontal displacement and safety factor. The results show that when infiltration position is gradually away from the excavation surface in case of keeping depth and width of infiltration constant, horizontal displacements first increase then decrease and there is a mutation point; safety factor first decrease then increase and achieves the minimum when the infiltration position is near the end of soil nail. The results provide the theory foundations for structural design of soil nailing retaining system.

Key words: foundation Engineering, soil nailing retaining, pipeline leaking, axial force of soil nail, safety