Settlement prediction and behaviour of pile foundations in deep clayey soil deposits.pdf

J. Cent. South Univ. (2014) 21: 15541564DOI: -014-2096-zSettlement prediction and behaviour of pile foundations indeep clayey soil depositsMA Jian-lin(马建林)1, Hussein Yousif Aziz2, SU Chun-hui(苏春晖)1, SHI Cong(石聪)1 1. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China;2. Civil Engineering Department, College of Engineering, Muthanna University, Sammawa 34010, Iraq Central South University Press and Springer-Verlag Berlin Heidelberg 2014Abstract: A new measurement technique is used to determine the settlement of bridge pile foundation and the thickness of pressed soft layer. The finite element Plaxis 3D foundation program is used in the analysis with a proposed empirical equation tomodify the input parameters represented by the pression modulus. The results of the numerical analysis using the proposedempirical equation provide insight to the settlement analysis of pile groups in soft clayey soils; consequently, the finite element Plaxis3D program can be a useful tool for numerical analysis. The numerical analysis is modified by adjusting the calculation pression modulus from those obtained under pressure between 100200 kPa by which the results of the settlement are modifiedand thus matching the realistic measurements. The absolute error is 3 mm which is pared with the last researches. Thisscenario can be applied for the similar problems in the theoretical applications of deep words: compression modulus; 3D finite elements; settlement monitoring; soil plasticity1 IntroductionThe settlement of pile group is the controlling factorin design because the primary purpose of pile groups isto limit the deformation of structures [1]. Thickness pressive layer is an important parameter forsettlement calculation and a significant basis forfoundation settlement and deformation, so its field testhas great realistic meaning in practical , the researchers are interesting in this topic ofstudy like Refs. [2