›› 2009, Vol. 30 ›› Issue (7): 2096-2100.

• Geotechnical Engineering • Previous Articles     Next Articles

Experimental studies and calculating method for compression and uplift capacities of fabricated steel foundation

ZHANG Da-chang1, JIANG Gang1, LIN Zhi-tian2, AN Zeng-jun2   

  1. ZHANG Da-chang1, JIANG Gang1, LIN Zhi-tian2, AN Zeng-jun2
  • Received:2008-09-16 Online:2009-07-10 Published:2011-03-10

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Abstract:

The tests on compression and uplift capacities of two fabricated steel foundations with different base sizes are carried out; and these load-deformations are investigated. Based on the strain-developing of steel and the observation on failure behavior of steel foundation and soil, the deformation and failure behavior of the fabricated steel foundation are investigated; and the shear failures of soil have appeared for the two foundations. Lastly, the calculating theory of compression and uplift capacity is proposed, in which the effective bottom area of foundation is used for calculating compression capacity and the soil inside spread angle is considered for calculating uplift capacity. Besides, it is proposed that the internal friction angles of different soils can be adopted as its spread angle; however, the spread angle under groundwater can be regarded 0 º. This research provides the important data for the theory of capacity calculating, designing method and engineering applications of this kind of foundations.

Key words: fabricated steel foundation, experiment, compression or uplift capacities, deformation, failure behavior

CLC Number: 

  • TU 473.1
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