The compression of the pile in the pile group can be determined by static load test. The settlement of the pile toe is calculated by layer wise summationmethod.
群桩中桩身压缩由单桩静载试验得到的桩顶沉降与桩端沉降之差求得，群桩的桩端沉降由分层总和法计算。
2
Based on the fundamental concept of layer-wise summationmethod, this paper presents tables for deciding the coefficients of deformation and deformation grade.
本文根据分层总和法的基本概念及表达式给出了变形系数表及变形梯度系数表。
3
Based on elastic methods and the layer-wise summationmethod, a program developed for settlement calculation of pile ground and combined composite foundation.