Effect of Ground Subsidence on Load Sharing and Settlement of Raft and Piled Raft Foundations
In this paper, two centrifugal model tests (case 1: raft
foundation, case 2: 2x2 piled raft foundation) were conducted in
order to evaluate the effect of ground subsidence on load sharing
among piles and raft and settlement of raft and piled raft
foundations. For each case, two conditions consisting of undrained
(without groundwater pumping) and drained (with groundwater
pumping) conditions were considered. Vertical loads were applied
to the models after the foundations were completely consolidated by
selfweight at 50g. The results show that load sharing by the piles in
piled raft foundation (piled load share) for drained condition
decreases faster than that for undrained condition. Settlement of
both raft and piled raft foundations for drained condition increases
more quickly than that for undrained condition. In addition, the
settlement of raft foundation increases more largely than the
settlement of piled raft foundation for drained condition.
[1] Phienwej N., Thepparak S., Giao P. H. (2004). Prediction of differential
settlement of buildings induced by land subsidence from deep well
pumping. 15th Southeast Asian Geotechnical Society Conference,
Bangkok, Thailand. 165 - 170.
[2] Zeevaert, L. (1957). Compensated friction-pile foundation to reduce the
settlement of buildings on the highly compressible volcanic clay of
Mexico City. Proc. 4th Int. Conf. Soil Mech. Foundn Engng, London,
England, Aug. 1957, 2, 81−86. Butterworths Scientific Publications,
London.
[3] Le Van Trung & Ho Tong Minh Dinh (2008). Measuring ground
subsidence in Ho Chi Minh city using differential inSAR techniques.
Science & Technology Development, Vol 11, No.12, 121 - 130.
[4] Hemsley, J. A. (2000). Developments in raft analysis and design. Design
applications of raft foundations. Hemsley J. A., editor, Thomas Telford,
London, 487-605.
[5] Katzenbach, R., Arslan, U., and Moormann, C. (2000). Piled raft
foundations projects in Germany. Design applications of raft
foundations. Hemsley J. A., editor, Thomas Telford, London, 323-392.
[6] Y. El-Mossallamy, associate Prof., Ain shams University, Cairo, Egypt
c/o ARCADIS, Berliner allee 6, D - 64295 Darmstadt, Germany (2008).
Plaxis Bulletin issue 23 / March 2008, pp.10-13.
[7] Vincenzo Fioravante, Daniela Giretti and Michele Jamiolkowski (2008).
Physical Modeling of Raft on Settlement Reducing Piles. From
Research to Practice in Geotechnical Engineering Congress 2008
(ASCE). 325(2), 206-229.
[8] S. Teramoto, T. V. Tran, M. Kimura & T. Boonyatee (2011). Centrifuge
modeling of piled raft and piled group foundation on soft clay under
some ground water condition. Proceedings of the Twenty-Fourth
KKCNN Symposium on Civil Engineering. December 14-16, 2011,
Hyogo, Japan. 377 - 380.
[9] Vincenzo Fioravante (1998). Load transfer mechanism of piled raft
foundation. Centrifuge 98, Kimura al. el., Editor, Balkema, Rotterdam,
Vol.1, 495-500.
[10] Horikoshi, K. & Randolph, M. F. (1996). Centrifuge modelling of piled
raft foundations on clay. Geotechnique 46, No. 4, 741-752.
[11] Burland, J.B. (1995). Piles as Settlement Reducers. Keynote Address,
18th Italian Congress on Soil Mechanics, Pavia, Italy.
[1] Phienwej N., Thepparak S., Giao P. H. (2004). Prediction of differential
settlement of buildings induced by land subsidence from deep well
pumping. 15th Southeast Asian Geotechnical Society Conference,
Bangkok, Thailand. 165 - 170.
[2] Zeevaert, L. (1957). Compensated friction-pile foundation to reduce the
settlement of buildings on the highly compressible volcanic clay of
Mexico City. Proc. 4th Int. Conf. Soil Mech. Foundn Engng, London,
England, Aug. 1957, 2, 81−86. Butterworths Scientific Publications,
London.
[3] Le Van Trung & Ho Tong Minh Dinh (2008). Measuring ground
subsidence in Ho Chi Minh city using differential inSAR techniques.
Science & Technology Development, Vol 11, No.12, 121 - 130.
[4] Hemsley, J. A. (2000). Developments in raft analysis and design. Design
applications of raft foundations. Hemsley J. A., editor, Thomas Telford,
London, 487-605.
[5] Katzenbach, R., Arslan, U., and Moormann, C. (2000). Piled raft
foundations projects in Germany. Design applications of raft
foundations. Hemsley J. A., editor, Thomas Telford, London, 323-392.
[6] Y. El-Mossallamy, associate Prof., Ain shams University, Cairo, Egypt
c/o ARCADIS, Berliner allee 6, D - 64295 Darmstadt, Germany (2008).
Plaxis Bulletin issue 23 / March 2008, pp.10-13.
[7] Vincenzo Fioravante, Daniela Giretti and Michele Jamiolkowski (2008).
Physical Modeling of Raft on Settlement Reducing Piles. From
Research to Practice in Geotechnical Engineering Congress 2008
(ASCE). 325(2), 206-229.
[8] S. Teramoto, T. V. Tran, M. Kimura & T. Boonyatee (2011). Centrifuge
modeling of piled raft and piled group foundation on soft clay under
some ground water condition. Proceedings of the Twenty-Fourth
KKCNN Symposium on Civil Engineering. December 14-16, 2011,
Hyogo, Japan. 377 - 380.
[9] Vincenzo Fioravante (1998). Load transfer mechanism of piled raft
foundation. Centrifuge 98, Kimura al. el., Editor, Balkema, Rotterdam,
Vol.1, 495-500.
[10] Horikoshi, K. & Randolph, M. F. (1996). Centrifuge modelling of piled
raft foundations on clay. Geotechnique 46, No. 4, 741-752.
[11] Burland, J.B. (1995). Piles as Settlement Reducers. Keynote Address,
18th Italian Congress on Soil Mechanics, Pavia, Italy.
@article{"International Journal of Architectural, Civil and Construction Sciences:59026", author = "T.V. Tran and S. Teramoto and M. Kimura and T. Boonyatee and Le Ba Vinh", title = "Effect of Ground Subsidence on Load Sharing and Settlement of Raft and Piled Raft Foundations", abstract = "In this paper, two centrifugal model tests (case 1: raft
foundation, case 2: 2x2 piled raft foundation) were conducted in
order to evaluate the effect of ground subsidence on load sharing
among piles and raft and settlement of raft and piled raft
foundations. For each case, two conditions consisting of undrained
(without groundwater pumping) and drained (with groundwater
pumping) conditions were considered. Vertical loads were applied
to the models after the foundations were completely consolidated by
selfweight at 50g. The results show that load sharing by the piles in
piled raft foundation (piled load share) for drained condition
decreases faster than that for undrained condition. Settlement of
both raft and piled raft foundations for drained condition increases
more quickly than that for undrained condition. In addition, the
settlement of raft foundation increases more largely than the
settlement of piled raft foundation for drained condition.", keywords = "Ground subsidence, Piled raft, Load sharing,
Centrifugal model test.", volume = "6", number = "2", pages = "174-8", }