Effect of embedment on consolidated undrained capacity of skirted circular foundations in soft clay under planar loading

Canadian Geotechnical Journal - Tập 54 Số 2 - Trang 158-172 - 2017
Cristina Vulpe1,2,3,4,5,6,7, Susan Gourvenec1,8,2,3,4,6,7, Alexander F. Cornelius1,3,9,4,6,7
1Centre for Offshore Foundation Systems & ARC Centre of Excellence for Geotechnical Science and Engineering
2Environmental and Mining Engineering at the University of Western Australia
3Graduate Structural Engineer
4School of Civil,
5School of Civil, Environmental and Mining Engineering, The University of Western Australia, Perth, WA 6009, Australia; formerly Centre for Offshore Foundation Systems and ARC Centre of Excellence for Geotechnical Science and Engineering, The University of Western Australia.
6Subiaco, WA 6904, Australia
7University of Western Australia, Perth, WA, 6009, Australia
8Centre for Offshore Foundation Systems and ARC Centre of Excellence for Geotechnical Science and Engineering, The University of Western Australia, Perth, WA 6009, Australia.
9Pritchard Francis, Subiaco, WA 6904, Australia; formerly School of Civil, Environmental and Mining Engineering, The University of Western Australia, Perth, WA 6009, Australia.

Tóm tắt

The effect of foundation embedment ratio and soil–skirt interface roughness on the consolidated undrained capacity of skirted circular foundations under planar loading in normally consolidated clay has been investigated through coupled three-dimensional finite element analyses. Results are presented as failure envelopes, and changes in shape and size of the normalized vertical–horizontal–moment (VHM) failure envelopes are described as a function of relative magnitude and duration of applied preload. Results show that embedment ratio and interface roughness affect the load distribution within the soil mass, but that consolidated undrained capacity under planar loading scales proportionately with the (unconsolidated) undrained capacity of the foundation. This latter feature enables the results to be neatly synthesized into a relatively straightforward method for use in engineering practice for prediction of gain in undrained VHM capacity due to preload and consolidation.

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Thông tin xuất bản

Canadian Geotechnical Journal

Tập 54 Số 2

158-172

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