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将均质土和成层土中的单桩桩顶沉降分成桩端力引起的沉降、桩身压缩和桩侧阻力引起的沉降3部分分别计算,获得单桩沉降后,运用等代墩法可获得群桩的平均沉降。单桩沉降计算方法可考虑桩端力与桩端位移的非线性关系和桩侧阻力引起沉降的非线性特性,同时计算方法可考虑桩身压缩对桩顶沉降的贡献。算例分析表明,计算值与实测值和其他方法的计算值有较好的一致性,验证了该方法的合理性。
The subsidence caused by the settlement of single pile top in homogeneous soil and layered soil is divided into three parts: settlement caused by pile tip force, compression of pile body and resistance caused by pile side. After obtaining the settlement of single pile, Obtain the average pile group settlement. The calculation method of single pile settlement can take into account the nonlinear relationship between pile tip force and pile end displacement and the nonlinear characteristic of settlement caused by pile side resistance. Meanwhile, the calculation method can consider the contribution of pile compression to the settlement of pile top. The case study shows that the calculated value is in good agreement with the measured value and the calculated value of other methods, which verifies the rationality of the method.