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钢顶管竖向土压力的计算对于钢管应力起着关键作用,但国内外规程及相关理论对于钢管所受竖向土压力有不同表述,且实测数据资料积累很少。本文在现有顶管土压力理论的基础上,利用有限元数值模拟仿真手段,通过不同参数的钢顶管案例分析,最终对钢顶管的竖向土压力计算提出一些有益的建议。
The calculation of the vertical earth pressure on the steel pipe plays a key role in the stress of the steel pipe. However, the rules and related theories at home and abroad have different expressions for the vertical earth pressure on the steel pipe, and there is little accumulation of measured data. Based on the existing theory of jacking soil pressure, this paper uses finite element numerical simulation method to analyze the vertical soil pressure of steel pipe jacking through the case analysis of different parameters of steel pipe jacking. Finally, some useful suggestions are put forward.