抗拔桩和抗压桩的机理分析及承载力计算

Uplift pile and compressive pile mechanism analysis and loading capacity calculation

通过分析抗拔桩与抗压桩桩周土在桩身部位及桩端部位应力路径的不同,阐述了抗拔桩和抗压桩不同的荷载传递机理,在计算黏土地基中钻孔灌注桩的抗拔承载力时,针对抗压桩和抗拔桩侧阻在桩身部位和桩端部位土体应力的不同,引入了两个侧阻折减系数,并通过实例验证了公式的可行性。

According to analyze the differences of stress path between uplift pile and compressive pile＇s soil around pile on pile body part and pile tip part, the author analyzes the different loading transfer mechanism between uplift pile and compressive pile, in the process of calculating uplift loading capacity of bored pile in clay foundation, aiming at the differences of stress path between uplift pile and compressive pile＇ s side-friction on pile body part and pile tip part, introduces two side-friction reduction factors, and verifies the formula＇s feasibility based on experiment.