Piled Raft and Compensated Piled Raft Foundations for Soft Soil Sites

2005 ◽  
Author(s):  
Harry G. Poulos
Keyword(s):  
Soft Soil ◽  
Piled Raft ◽  
Raft Foundations

scholarly journals ESTIMATING THE INTERNAL FORCES OF RAFT IN PILED RAFT FOUNDATION FOR NORMAL AND GROUNDWATER PUMPING CONDITIONS: A CASE STUDY SOC TRANG PROVINCE, VIETNAM

2021 ◽  
Vol 1 (42) ◽  
pp. 86-93
Author(s):  
Hiep Van Huynh ◽  
Tri Huu Huynh ◽  
Truyen Gia Ngo ◽  
Tuan Van Tran
Keyword(s):  
Shear Force ◽  
Soft Soil ◽  
Groundwater Pumping ◽  
Piled Raft ◽  
Piled Raft Foundation ◽  
Raft Foundation ◽  
Length Width ◽  
Internal Forces ◽  
Raft Foundations

Piled raft foundations are widely used in infrastructure built on soft soil to reduce the settlement and enhance bearing capacity. The raft can be used for basements and to share the load. In this paper, Poulos method, in which the raft was cut into many piled strips, was used as an analytical method. The study also used Plaxis2D and SAP 2000 to calculate internal forces for the raft in a piled raft foundation. A case of Vietcombank building with 10 floors and 1 basement, constructed on a soil profile in Soc Trang province, was studied. The piled raft with a 35m×19m×1m (length×width×thickness) raft and 28 piles were used for the analysis. Normaland groundwater pumping conditions were applied for the soil. The results showed that the maximum moment and shear force that occurred in the raft were affected when the groundwater pumping condition was applied to the model. The internal forces of the raft in the piled raft foundation for different conditions were captured,discussed, and presented in this paper.

scholarly journals Influence of Variable Rigidity Design of Piled Raft Foundation on Seismic Performance of Buildings

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Yunfei Xie ◽  
Shichun Chi ◽  
Maohua Wang
Keyword(s):  
Seismic Performance ◽  
Nuclear Power ◽  
Soft Soil ◽  
Optimized Design ◽  
Variable Rigidity ◽  
Structure Interaction ◽  
Piled Raft ◽  
Piled Raft Foundation ◽  
Pile Arrangement ◽  
Raft Foundations

In order to reduce the costs and improve the overall performance of building systems, the static optimized design with variable rigidity of piled raft foundations has been widely used in recent years. Variable rigidity design of piled raft foundations that support midrise buildings in high-risk seismic zones can alter the dynamic characteristics of the soil-pile-structure system during an earthquake due to soil-pile-structure interaction. To investigate these aspects, a nuclear power plant sitting on multilayered soil is simulated numerically. The paper describes a numerical modeling technique for the simulation of complex seismic soil-pile-structure interaction phenomena. It was observed that the total shear force on top of the piles and the rocking of the raft are reduced after optimization, whereas the displacement of the superstructure is nearly unaffected. The findings of this study can help engineers select a correct pile arrangement when considering the seismic performance of a building sitting on soft soil.

Numerical Analysis of Piled Raft Foundations Designed for Settlement Control on Steel Grain Silos in Collapsible Soils

2021 ◽  
Author(s):  
Heitor Cardoso Bernardes ◽  
Humberto Laranjeira de Souza Filho ◽  
Arthur Duarte Dias ◽  
Renato Pinto da Cunha
Keyword(s):  
Numerical Analysis ◽  
Piled Raft ◽  
Collapsible Soils ◽  
Raft Foundations

Application of deformation adjustors in piled raft foundations

2016 ◽  
Vol 169 (6) ◽  
pp. 527-540 ◽  
Author(s):  
Feng Zhou ◽  
Cheng Lin ◽  
Xu-dong Wang ◽  
Jianyang Chen
Keyword(s):  
Piled Raft ◽  
Raft Foundations

Pile configuration optimization on the design of combined piled raft foundations

2021 ◽  
Author(s):  
Birhanu Asefa ◽  
Eleyas Assefa ◽  
Lysandros Pantelidis ◽  
Costas Sachpazis
Keyword(s):  
Configuration Optimization ◽  
Piled Raft ◽  
Raft Foundations

Design and safety concept for piled raft foundations

2020 ◽  
pp. 439-448 ◽  
Author(s):  
R. Katzenbach ◽  
U. Arslan ◽  
Chr. Moormann
Keyword(s):  
Safety Concept ◽  
Piled Raft ◽  
Raft Foundations
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