Advertisement

The influence of trenching diaphragm wall panels on deflection and bending moment of existing piles within piled foundation

  • Ahmed MohamedEmail author
  • Marawan Shahin
  • Herbert Klapperich
Technical Note
  • 236 Downloads

Abstract

Conducting deep excavations for underground construction inside the cities requires diaphragm wall due to space limitation. The ground surface is affected by the trenching process. The construction of the diaphragm walls near deep foundations may not be avoided specially in the crowded cities. This research focuses on the deflection and bending moment of piled foundations near slurry trench. Since the trench is considered as a three-dimensional problem, a three-dimensional numerical analysis was used in this research. It was conducted using a commercial analysis software known as FLAC 3D. The numerical analysis method was verified using two case histories, one in Hong Kong and another one in Giza, Egypt. The results from the numerical analysis were in quite a good contrast with the field data results. This indicates that the trenching process could be numerically modeled with the proposed method and provides good results. The verified numerical analysis method was used to conduct a numerical parametric sric study that discusses the effect of multiple panels on adjacent connected pile groups or piled raft foundation. The parametric study showed that the pile deflection and bending moment are affected by the panel construction stages, pile location within the foundation. The pile deflection and bending moment are affected by the stages of construction. The piles near the trench are affected by the trenching process, while the piles far from the trench are affected by the dragging force of the pile near the trench.

Keywords

Diaphragm wall Pile Trenching Deflection Pile group Pile raft foundation Numerical analysis 

References

  1. 1.
    Abdel-Rahman AH, El-Sayed SM (2009) Foundation subsidence due to trenching of diaphragm walls and deep braced excavations in alluvium soils. In: Proceeding of the 17th international geotechnical engineering conference, Alexandria, Egypt, vol 3, pp 1935–1938Google Scholar
  2. 2.
    Byrne PM, Park SS, Beaty M (2003) Seismic liquefaction: centrifuge and numerical modeling in FLAC and numerical modeling in geomechanics. In: Proceedings of the 3rd international FLAC symposium, Sudbury, Ontario, Canada, pp 321–331Google Scholar
  3. 3.
    Choy CK, Standing JR, Mair RJ (2007) Stability of a loaded pile adjacent to a slurry-supported trench. Géotechnique 57(10):807–819CrossRefGoogle Scholar
  4. 4.
    Comodromos EM, Papadpoulou MC, Konstantinidis GK (2013) Effects from diaphragm wall installation to surrounding soil and adjacent buildings. Comput Geotech 53:106–121CrossRefGoogle Scholar
  5. 5.
    Cowland JW, Thorley CBB (1985) Ground and building settlement associated with adjacent slurry trench excavation. In: Proceedings of the third international conference on ground movements and structures, Cardiff, England, pp 723–738Google Scholar
  6. 6.
    Davies RV, Henkel D (1982) Geotechnical problems associated with the construction of Chater Station, Hong Kong. Arup J 17(1):4–10Google Scholar
  7. 7.
    DiBiagio E, Myrvoll F (1972) Full scale field tests of a slurry trench excavation in soft clay. In: Proceeding of the 5th in European conference on soil mechanics and geotechnical engineering European conference on soil mechanics and geotechnical engineering, Madrid, pp 473–483Google Scholar
  8. 8.
    Gourvenec SM, Powrie W (1999) Three-dimensional finite-element analysis of diaphragm wall installation. Géotechnique 49(6):801–823CrossRefGoogle Scholar
  9. 9.
    Grandas-Tavera CE, Triantafyllidis T (2012) Simulation of a corner slurry trench failure in clay. Comput Geotech 45:107–117CrossRefGoogle Scholar
  10. 10.
    Hamza MM, Atta A, Roussin A (1999) Ground movements due to the construction of cut-and-cover structures and slurry shield tunnel of the cairo metro. Tunn Undergr Space Technol 14(3):281–289CrossRefGoogle Scholar
  11. 11.
    Itasca (2012) Fast Lagrangian analysis of continua in 3 dimensions (FLAC 3D) version 5 user’s guide, 5th edn. Itasca Consulting Group Inc., MinnesotaGoogle Scholar
  12. 12.
    Karlsrud K (1983) Performance and design of slurry walls in soft clay, vol 149. Norwegian Geotechnical Institute, Oslo, pp 1–9Google Scholar
  13. 13.
    Korff M (2013) Response of piled buildings to the construction of deep excavations. PhD dissertation, University of Cambridge, UK. http://www.dspace.cam.ac.uk/handle/1810/244715
  14. 14.
    L’Amante D, Flora A, Russo G, Viggiani C (2012) Displacements induced by the installation of diaphragm panels. Acta Geotech 7:203–218CrossRefGoogle Scholar
  15. 15.
    Mohamed A (2015) Effect of groundwater table rising and slurry reduction during diaphragm wall trenching on stability of adjacent piles. In: IOP conference series: earth and environmental science, conference. doi: 10.1088/1755-1315/26/1/012012 CrossRefGoogle Scholar
  16. 16.
    Mohamed A, Shahin M, Klapperich H (2017) Soil dynamics and soil-structure interaction for resilient infrastructure. Soil Dyn Soil Struct Interact Resil Infrastruct. doi: 10.1007/978-3-319-63543-9 CrossRefGoogle Scholar
  17. 17.
    Ng CWW, Yan RWM (1998) Stress transfer and deformation around a diaphragm wall. J Geotech Geoenviron Eng 124(7):638–648CrossRefGoogle Scholar
  18. 18.
    Ng CWW, Rigby D, Lei GH, Ng SWL (1999) Observed performance of a short diaphragm wall panel. Géotechnique 49(5):681–694CrossRefGoogle Scholar
  19. 19.
    Poh TY, Goh ATC, Wong IH (2001) Ground movements associated with wall construction: case histories. J Geotech Geoenviron Eng 127(12):1061–1069CrossRefGoogle Scholar
  20. 20.
    Stround MA, Sweeney DJ (1977) A review of diaphragm wall. Discussion appendix. Institution of Civil Engineers, LudhianaGoogle Scholar
  21. 21.
    Tsai J-S, Jou L-D, Hsieh H-S (2000) A full-scale stability experiment on a diaphragm wall trench. Can Geotech J 37(2):379–392CrossRefGoogle Scholar

Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.Geo-instituteTU Bergakademie FreibergFreibergGermany
  2. 2.Faculty of EngineeringTanta UniversityTantaEgypt

Personalised recommendations