Field Tests of Anchors in Clay II: Predictions and Interpretation

Andersen, Knut H.; Dyvik, Rune; Schro̸der, Knut; Hansteen, O. E.; Bysveen, Steinar

doi:10.1061/(asce)0733-9410(1993)119:10(1532)

Cited by 79 publications

(25 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In these problems, N eq is often assumed to be homogeneous in the near-field foundation soil. The assumption has been used and validated for GBS design (Andersen et al, , 1993. The assumption makes it possible to define stress-strain curves for a 'global' N eq and compute the foundation response representing the same N eq .…”

Section: The Ngi Procedures Accounting For Cyclic Loadingmentioning

confidence: 99%

A numerical study of capacity and stiffness of circular skirted foundations in clay subjected to combined static and cyclic general loading

2018

View full text Add to dashboard Cite

Skirted foundations have been widely applied as offshore foundations for several decades. In design, the use of failure envelopes is convenient for assessing stability under combined loading. A large number of studies on failure envelopes exist in the literature based on experiments and numerical analyses. Most of these studies focus on ultimate capacity and static loading. This paper presents a numerical study focusing on cyclic degradation and failure envelopes for skirted foundations subjected to combined cyclic and static loading. It was found that the shapes of the failure envelopes are little affected by degradation expressed by the number of equivalent cycles. In addition to failure envelopes, contours of displacements were computed in the three-dimensional load space (vertical, horizontal and moment load) for a more complete description of the response. As an example, the well-defined cyclic contour diagrams of Drammen clay were utilised to demonstrate how foundation response diagrams can be established. The database is accompanied by a simplified procedure to account for cyclic degradation through equivalent number of cycles, different normalised load-displacement response and variation in foundation geometry. The framework of procedures can be used to estimate foundation stiffness and capacity and the results can serve as a basis for the development of foundation macro-element models.

show abstract

Section: The Ngi Procedures Accounting For Cyclic Loadingmentioning

confidence: 99%

A numerical study of capacity and stiffness of circular skirted foundations in clay subjected to combined static and cyclic general loading

2018

View full text Add to dashboard Cite

show abstract

“…Reverse end bearing (REB) potential of skirted foundations is widely acknowledged (Puech et al, 1993;Dyvik et al, 1993;Andersen et al, 1993;Watson et al, 2000;Gourvenec et al, 2009;Mana et al, 2012a) and is gradually being accepted by the offshore industry for particular designs. However, general design guidelines and recommended practices (e.g.…”

Section: Introductionmentioning

confidence: 99%

A novel technique to mitigate the effect of gapping on the uplift capacity of offshore shallow foundations

Mana¹,

Gourvenec

Randolph

2013

Géotechnique

View full text Add to dashboard Cite

A flexible mat was provided around the periphery of skirted shallow foundations, a so-called 'gap arrestor', to assess the potential to mitigate the effect of gapping on uplift capacity. Results are presented from a series of drum centrifuge tests on skirted foundations with an intact skirt-soil interface, a gapped skirt-soil interface and a gapped interface with gap arrestor, subjected to undrained and sustained uplift. The results are promising, showing that the provision of an effective gap arrestor preserves suction to larger foundation displacements and reduces the rate of displacement under sustained uplift compared with the case of a gapped interface without arrestor.

show abstract

“…Despite several studies about static capacity and stability in subsiding for bucket foundations have been done [1][2][3][4], the long-term bearing capacity of bucket foundation under cyclic loads has not clarified. Several approaches to evaluating soil bearing capacities under cyclic loads [5][6][7][8][9] supply good reference for us. Wang et al [10][11][12][13] presented a method to determine saturated soft clay's cyclic strength based on cyclic triaxial experiment, and made some theoretic and large-scale model experimental studies about bearing capacity of bucket foundation under cyclic loads on soft clay layer.…”

Section: Introductionmentioning

confidence: 99%

Study on the Capacity Degradation of Bucket Foundation in Liquefied Sand Layer under Cyclic Loads~!2009-07-18~!2009-08-23~!2010-02-02~!

Li¹,

Lu²,

Shu-yun³

2010

TOOEJ

View full text Add to dashboard Cite

Abstract:The capacity degradation of bucket foundation in liquefied sand layer under cyclic loads such as equivalent dynamic ice-induced loads is studied. A simplified numerical model of liquefied sand layer has been presented based on the dynamic centrifuge experiment results. The ice-induced dynamic loads are modeled as equivalent sine cyclic loads, the liquefaction degree in different position of sand layer and effects of main factors are investigated. Subsequently, the sand resistance is represented by uncoupled, non-linear sand springs which describe the sub-failure behavior of the local sand resistance as well as the peak capacity of bucket foundation under some failure criterion. The capacity of bucket foundation is determined in liquefied sand layer and the rule of capacity degradation is analyzed. The capacity degradation in liquefied sand layer is analyzed comparing with that in non-liquefied sand layer. The results show that the liquefaction degree is 0.9 at the top and is only 0.06 at the bottom of liquefied sand layer. The numerical results are agreement well with the centrifugal experimental results. The value of the degradation of bucket capacity is 12% in numerical simulating whereas it is 17% in centrifugal experiments.

show abstract

Field Tests of Anchors in Clay II: Predictions and Interpretation

Cited by 79 publications

References 9 publications

A numerical study of capacity and stiffness of circular skirted foundations in clay subjected to combined static and cyclic general loading

A numerical study of capacity and stiffness of circular skirted foundations in clay subjected to combined static and cyclic general loading

A novel technique to mitigate the effect of gapping on the uplift capacity of offshore shallow foundations

Study on the Capacity Degradation of Bucket Foundation in Liquefied Sand Layer under Cyclic Loads~!2009-07-18~!2009-08-23~!2010-02-02~!

Contact Info

Product

Resources

About