NUMERICAL ANALYSIS FOR BEARING CAPACITY OF SUCTION CAISSON FOUNDATION SUBJECT TO V-H-T LOADING

Zhan Yungang

doi:10.13204/j.gyjz201010017

Volume 40 Issue 10

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Zhan Yungang. NUMERICAL ANALYSIS FOR BEARING CAPACITY OF SUCTION CAISSON FOUNDATION SUBJECT TO V-H-T LOADING[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(10): 76-81. doi: 10.13204/j.gyjz201010017

Citation:

Zhan Yungang. NUMERICAL ANALYSIS FOR BEARING CAPACITY OF SUCTION CAISSON FOUNDATION SUBJECT TO V-H-T LOADING[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(10): 76-81. doi: 10.13204/j.gyjz201010017

Zhan Yungang. NUMERICAL ANALYSIS FOR BEARING CAPACITY OF SUCTION CAISSON FOUNDATION SUBJECT TO V-H-T LOADING[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(10): 76-81. doi: 10.13204/j.gyjz201010017

Citation:

Zhan Yungang. NUMERICAL ANALYSIS FOR BEARING CAPACITY OF SUCTION CAISSON FOUNDATION SUBJECT TO V-H-T LOADING[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(10): 76-81. doi: 10.13204/j.gyjz201010017

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NUMERICAL ANALYSIS FOR BEARING CAPACITY OF SUCTION CAISSON FOUNDATION SUBJECT TO V-H-T LOADING

doi: 10.13204/j.gyjz201010017

Zhan Yungang

1.
School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China

Received Date: 2010-03-13
Publish Date: 2010-10-20

Abstract

Abstract

Suction caisson foundations for offshore wind turbines are subjected to vertical,horizontal and torsional loads,which are induced by self-weight of structures and offshore environment.This loading condition is referred to as combined loading mode.In this paper,the results of numerical study on the bearing capacity of suction caisson installed in homogeneous clayey soil to support wind turbine structures were presented,considering the frictional contact behavior of interface between skirt and subsoil.Suction caisson with aspect ratios of 0.25 ～ 1.0 and eccentricity ratios of horizontal loads varying in the range of 0.0 ～ 2.0 was considered.The bearing capacity behavior of the caisson under pure vertical,lateral,torsional loads was investigated through displacement controlled method first,followed by the interaction of these loads with each other by using load-displacement controlled analysis method.The interaction of various combinations of loading was presented in the form of failure locus.It is shown that the vertical capacity from FE analysis agrees well with that of modified conventional method,and horizontal capacity factor decreases with aspect ratio increasing.The torsional load has significant effect on the vertical capacity but has less effect on the horizontal capacity.The normalized failure loci for suction caisson with different eccentricity ratio can be fitted by elliptic curve.
- finite element analysis,
- suction caisson,
- failure locus,
- combined loading

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References(14)

References

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