Paper Title:
Numerical Analysis on Vertical Structural Stability of Floating Drilled Shaft during Sinking
  Abstract

The vertical structural stability of floating drilled shaft during sinking is an important practical issue on the safety of boring technique in the deep and thick alluvium. In fact, the vertical structural stability of shaft lining is a matter of overturn buckling. Theoretical analysis shows that the height of balance water (HBW) is the most important factor for the vertical structural stability of shaft lining. If the HBW is controlled in a reasonable range, the shaft lining will not buckle during construction. The shaft lining is regarded as a slender bar with closed bottom and floating in the mud while sinking. According to the mechanical analysis on the shaft lining from floating and sinking to the process of contacting the well bottom, a reasonable range of the HBW is deduced. Finally, with practical instances, the author in this article introduces the calculation principle in vertical structural stability of shaft lining while sinking and floating using finite element method (FEM). The simulation results show that in the reasonable range of HBW, the stability of shaft lining increases as the height of balance water goes up.

  Info
Periodical
Advanced Materials Research (Volumes 368-373)
Chapter
Chapter 6: Geotechnical Engineering and Underground Space Structure
Edited by
Qing Yang, Li Hua Zhu, Jing Jing He, Zeng Feng Yan and Rui Ren
Pages
2625-2629
DOI
10.4028/www.scientific.net/AMR.368-373.2625
Citation
J. M. Liu, C. B. Wang, "Numerical Analysis on Vertical Structural Stability of Floating Drilled Shaft during Sinking", Advanced Materials Research, Vols. 368-373, pp. 2625-2629, 2012
Online since
October 2011
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Price
$32.00
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