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针对兰州地区的湿陷性黄土，通过两根实际工程桩实测出正常使用状态下支护桩桩身在不同开挖深度的弯矩分布，推导了桩身剪力和土压力，并与设计值进行了比较．重点分析了悬臂式支护桩在正常使用状态下的桩身内力和所受土压力的分布情形，揭示了目前深基坑支护桩设计中存在的主要问题及其内在因素，提出了土压力分布图形．
For the collapsible loess in Lanzhou area, the bending moment distributions of the support piles under different working excavation depths were measured through two actual engineering piles, and the shear force and earth pressure of the pile were deduced, and the design values were deduced. A comparison was made. The distribution of the internal force of the cantilever support piles and the earth pressure under the normal use condition of the cantilevered support piles are analyzed, and the main problems and inherent factors in the design of the deep foundation pit support piles are revealed, and the earth pressure is proposed. Distribution graph.