【摘要】 本文根据对北京市某给水工程大口径球铁管的现场实测资料，给出了在不同复土高度下作用在管体上的土压力，管体变形和应力状态，根据实测结果，分析了作用在管体上的变形摩阻力，土压力的滞后效应，管底土弧基座，施工工艺等因素对管体受力状态的影响及其产生的原因。更多还原

【Abstract】 Data of actual measurement on--site of φ2. 6m diameter ductile iron pipe of a water transmission pipeline in Beliing under earth pressure in different depth backfill, pipe defimation and stress condition are presented. Base upon results Of actual measurements, effeet and cause of force condition of pipe body are analysed against defimation of friction,earth pressure deflection factor, shaped subgrade under pipe bottom, constraction process and etc.更多还原