scholarly journals BEHAVIOR OF PILED RAFT FOUNDATIONS OBTAINED FROM IN-SITU HORIZONTAL LOADING TESTS ON DOWNSIZED FOUNDATIONS

2002 ◽  
Vol 67 (559) ◽  
pp. 121-127 ◽  
Author(s):  
Toshiaki NAGAO ◽  
Fumio KUWABARA ◽  
Haruo KOBAYASHI ◽  
Toru WATANABE
Keyword(s):  
Piled Raft ◽  
Horizontal Loading ◽  
Loading Tests ◽  
Raft Foundations

scholarly journals IN-SITU VERTICAL LOADING TESTS OF PILED RAFT FOUNDATION ON HIGHLY ORGANIC SOFT GROUND

2011 ◽  
Vol 17 (36) ◽  
pp. 483-486
Author(s):  
Tsutomu TSUCHIYA ◽  
Ryo AOKI ◽  
Hiroshi NAGAI
Keyword(s):  
Soft Ground ◽  
Vertical Loading ◽  
Piled Raft ◽  
Piled Raft Foundation ◽  
Raft Foundation ◽  
Loading Tests

scholarly journals Horizontal Loading Tests on Disconnected Piled Rafts and a Simplified Method to Evaluate the Horizontal Bearing Capacity

2018 ◽  
Vol 2018 ◽  
pp. 1-12
Author(s):  
Xiao-jun Zhu ◽  
Kang Fei ◽  
Sheng-wei Wang
Keyword(s):  
Granular Layer ◽  
Fine Sand ◽  
Test Results ◽  
Vertical Loading ◽  
Piled Raft ◽  
Horizontal Loading ◽  
Simplified Method ◽  
Loading Tests ◽  
Structural Connection ◽  
Foundation Type

Disconnected piled raft (DPR) foundations have been widely adopted as an effective foundation system where the piles are separated from the raft by a granular layer, which can limit the shear forces and moments transmitted between the raft and the piles. Thus, DPR foundations may avoid the problem of horizontal forces, such as those from an earthquake or dynamic loads, which damage the structural connection between the pile head and raft. A series of static horizontal loading tests were carried out on three types of foundation models, i.e., piled raft, disconnected piled raft, and raft alone models, on fine sand using a geotechnical model in a 1 g field. In this paper, the influences of vertical loading and interposed layer thickness were presented and discussed. The results showed that most of the horizontal force was carried by raft/interposed layer friction in the DPR foundation type, and the shear force and moment of the piles were greatly reduced due to the gap between the raft and the heads of the piles. The tested foundations were simulated using a simplified method with theoretical equations derived by making several approximations and assumptions. The simulated results agreed well with the test results.

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

scholarly journals Development of shear band and particle crushing observed in in-situ loading tests on a sedimented sand.

1994 ◽  
pp. 207-216
Author(s):  
Masatoshi Ohuchi ◽  
Osamu Kusakabe ◽  
Toshiyuki Hagiwara ◽  
Shintaro Abe
Keyword(s):  
Shear Band ◽  
Particle Crushing ◽  
Loading Tests
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