某工程静压沉管灌注桩极限承载力分析研究

The analysis of ultimate bearing capacity for one of Quanzhou's static pressure cast-in-situ pile project

通过分析泉州某静压沉管灌注桩工程试打桩及所有工程桩的静载试验结果,并采用Math CAD软件拟合其承载力曲线,探讨了沿海地区支于强风化岩的静压沉管灌注桩的施工终止压桩力与极限承载力的关系,分析了理论计算与静载预测极限承载力值之间存在差异的原因,提出了静压沉管灌注桩施工终止压桩的控制方法和极限承载力的取值建议。

By analyzing the results from piling in one of Quanzhou＇s static pressure cast-in-situ pile project and static load test of all other engineering piles,and using Math CAD software to fit their bearing capacity curves. The relationship between the final jacking force and ultimate bearing capacity of the construction of static pressure cast-in situ pile with intense weathered rock in the coastal areas is discussed. By analyzing the reason for the difference between the theory-calculated ultimate bearing capacity and the predictive data of static load,this paper put forward the controlling methods to terminate the static pressure cast-in-situ pile construction＇s final jack and propositional value of the ultimate bearing capacity.