上港二区散粮筒仓容量四万吨,自重三万吨。基础采用刚性底板,打604根长30.7米的混凝土桩,桩距1.9米。群桩基础施工期的土体应力、应变及基桩入土后的受力和沉降,都是理论上尚未解决的重要问题。为此,我们进行了原体观测,以确保邻近的江岸和码头的安全,为研究群桩基础累积资料。观测项目有:孔隙水压力,深层位移,表面 The volume of silos in the two districts of Shanghai and Hong Kong is 40,000 tons and the weight is 30,000 tons. The base adopts a rigid base plate and hits 604 concrete piles with a length of 30.7 meters. The pile spacing is 1.9 meters. The stress and strain of the soil during the construction of the pile group foundation and the stress and settlement after the soil pile is inserted into the foundation are all theoretically unsolved important issues. To this end, we conducted observations of the original body to ensure the safety of the adjacent riverbanks and docks, and to accumulate data for studying pile group foundations. Observed items: pore water pressure, deep displacement, surface