Study on the settlement of raft foundations by different methods

In order to study effects of the size, the stiffness of foundation, and the applied load on the thickness of compressed zone and the settlement of raft foundations, this paper analyze methods of settlement calculation such as the method of summation of partial settlements, the method of elastic laye...

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Bibliographic Details
Published inMATEC Web of Conferences Vol. 251; p. 4054
Main Authors Le Ba, Vinh, Nguyen Van, Nhan, Le Ba, Khanh
Format Journal Article Conference Proceeding
LanguageEnglish
Published Les Ulis EDP Sciences 01.01.2018
Subjects
Computer simulation
Elastic layers
Finite element method
Foundation settlement
Mathematical analysis
Methods
Raft foundations
Stiffness
Thickness
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Summary:In order to study effects of the size, the stiffness of foundation, and the applied load on the thickness of compressed zone and the settlement of raft foundations, this paper analyze methods of settlement calculation such as the method of summation of partial settlements, the method of elastic layer of finite thickness, and the finite element method with the PLAXIS 3D software. Effects of the size of foundation are considered with many areas of foundation such as 150 m 2 , 338 m 2 , 600 m 2 , 938 m 2 , 1350 m 2 , 1838 m 2 , and 2400 m 2 ; and effects of the applied load of the upper structure are considered with many values of 150 kN/m 2 , 200 kN/m 2 , and 250 kN/m 2 . There are remarkable differences between settlements calculated by the analytical methods and ones simulated by PLAXIS 3D. From the analysis and evaluation of calculated results, this paper proposes a suitable method to determine the thickness of compressed zone, as well as the method of calculation of settlement for raft foundations.
ISSN:2261-236X
2274-7214
2261-236X
DOI:10.1051/matecconf/201825104054