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结合工程实例和工程地质状况,在桩基静载及高应变试验的基础上,分析了软土地基中后压浆钻孔灌注桩桩侧阻力及桩端阻力的发挥性状,分析了后压浆钻孔灌注承载力异常的原因。讨论了桩基承载力的主要影响因素,包括施工机具的选择、桩土间摩擦性质、桩周土体性质以及持力层土体性质等。
Based on the engineering practice and the engineering geological conditions, based on the static load and high strain tests of the pile foundation, the lateral resistance and pile end resistance of post-grouting bored piles in soft soil foundation are analyzed. The reason of the abnormal bearing capacity of borehole. The main factors that affect the bearing capacity of pile foundation are discussed, including the choice of construction equipment, the frictional properties between pile and soil, the properties of soil around pile and the properties of soil bearing layer.