内支撑排桩联合土钉支护体系的相互作用机理分析

Interaction Mechanisms of the Composite Supporting System of Soil Nail and Row Pile with Strut

针对内支撑排桩联合土钉支护体系,根据排桩内支撑体系和土钉支护体系的工作原理,采用理论研究方法,分析了内支撑排桩对相邻土钉支护部分侧向变形的约束作用,结合受约束土钉在开挖施工过程中产生的侧移特征,探讨了排桩内支撑联合土钉支护体系中土钉支护部分的空间传力效应,及其对排桩内支撑支护部分受力变形的影响,为该类新型联合支护体系设计计算和工程应用研究奠定了一定的理论基础.

The interaction mechanisms of the composite supporting system of soil nail and row pile with strut were studied by theoretical research approach. According to the working principles of the row pile with strut supporting system and the soil nail supporting system, the restraint function of the row pile with strut to adjacent soil nail wall lateral deformation was analyzed. Combined with the deformation development characteristics of the soil nail wall during pit excavation, soil spaceing effect in the soil nail region were discussed. Moreover, the load and deformation in the supporting region of row pile with strut were also studied. These will laid a certain theoretical basis for design calculation and engineering application of this new composite supporting system.