Settlement calculation for long-short composite piled raft foundation

来源期刊：中南大学学报(英文版)2006年第6期

论文作者：赵明华 张玲 杨明辉

文章页码：749 - 754

Key words：long-short composite piled raft foundation;shear displacement method;settlement ; Mylonakis&Gazetas model

Abstract: The mechanism of long-short composite piled raft foundation was discussed.Assuming the relationship between shear stress and shear strain of the surrounding soil was elasto-plastic,shear displacement method was employed to establish the different explicit relational equations between the load and the displacement at the top of pile in either elastic or elasto-plastic period.Then Mylonakis&Gazetas model was introduced to simulate the interaction between two piles or between piles and soil.Considering the effect of cushion,the flexible coefficients of interaction were provided.With the addition of a relevant program,the settlement calculation for long-short composite piled raft foundation was developed which could be used to account for the interaction of piles,soil and cushion.Finally,the calculation method was used to analyze an engineering example.The calculated value of settlement is 10.2 mm,which is close to the observed value 8.8 mm.

基金信息：the National Natural Science Foundation of China