水平力作用下框架码头桩侧向土压力的模型试验研究

Model Test Study on Lateral Earth Pressure of Pile in the Form of Truss-framed Wharf under Horizontal Forces

为分析水平力作用下框架码头桩侧向土压力的分布规律,通过土质岸坡框架码头模型试验,分析了一定水深条件下在水平推力作用下桩前后侧向土压力沿深度方向、水平方向的分布规律,探讨了框架码头土体岸坡潜在滑动面的位置。结果表明,各桩的桩后侧向土压力比桩前侧向土压力大;同一根桩上,随着距桩底距离的增加,侧向土压力呈先增大后减小再增大的趋势;随着距坡顶水平距离的增加,桩后侧向土压力呈倒＂~＂变化趋势变化,桩前侧向土压力呈＂~＂趋势变化。这为工程实践中框架码头岸坡的受力变形特性提供了参考依据,具有一定的现实意义。

In order to study the lateral earth pressure regularities of distribution of pile in the form of truss-framed wharf,through the soil bank slope model test of framework wharf,under the condition of a certain depth,under horizontal forces,the lateral earth pressure in front and behind pile regularities of distribution along the depth and horizontal direction was analyzed and the potential sliding surface on the bank slope was studied.The results show that the lateral earth pressure behind pile is larger than the lateral earth pressure in front of pile in each pile.With the increase of distance from the pile bottom,the lateral earth pressure is on the trend of first increasing and then decreasing and the follow increasing.With the increase of distance from the top level,the lateral earth pressure behind pile is on the trend of the reverse of‘~＇and the lateral earth pressure in front of pile is on the trend of‘~＇.In the engineering practices,these conclusions provide a reference basis for the characteristics of stressed deformation of frame wharfs,which has a certain practical significance.