Simplified Design Procedure for Piled Raft Foundations - H.G. Poulos, Fellow, AS

AloneGalaxy

Abstract
"In situations where a raft foundation alone does not satisfy the design requirements, it
2 B% `3 d/ {7 g$ {% O; j  e# pmay be possible to enhance the performance of the raft by the addition of piles. The use
$ N" T8 I2 w8 O; }+ hof a limited number of piles, strategically located, may improve both the ultimate load
  @9 z" X2 s% P9 Q+ E% |+ ]capacity and the settlement and differential settlement performance of the raft. This
paper outlines the development of a simplified method of analysis which can provide a
  I7 {) k7 P2 }8 Q; I0 j  Auseful tool for preliminary design of piled raft foundations. It involves two phases:
1. The assessment of the overall foundation behavior;
2. The assessment of the behavior under individual column loads.
; ]! U7 [6 }) S% `6 c4 JIn both cases, use is made of simplified solutions to compute foundation stiffness
/ P* m( V/ ^0 ?7 v& m2 b9 o% _, q2 Jand capacity characteristics. The selection of design geotechnical parameters is an
essential component of both design stages, and some approximations for estimating the
necessary parameters are summarized.
Typical applications to a case history of a piled raft and to model centrifuge tests
are described, and it is found that the behavior predicted by the simplified analysis is
broadly consistent with the measured behavior."
% m, C8 e! R+ E) f; P. }1 |+ E7 R Simplified Design Procedure for Piled Raft Foundations - H.G. Poulos, Fellow, ASCE.rar (677.45 KB, Lượt tải về: 57)

16/5/2011 15:48 Tải lên

Click to download
Tải điểm: Thưởng -2 điểm