Limit States and Factor of Safety in Design of an Anchored Sheet Pile Wall

2001 ◽  
Vol 1772 (1) ◽  
pp. 122-127 ◽  
Author(s):  
A. B. Schriver ◽  
A. J. Valsangkar
Keyword(s):  
Factor Of Safety ◽  
Sheet Pile ◽  
Limit States ◽  
Sheet Pile Wall

Anchor rod forces and maximum bending moments in sheet pile walls using the factored strength approach

1996 ◽  
Vol 33 (5) ◽  
pp. 815-821 ◽  
Author(s):  
A B Schriver ◽  
A J Valsangkar
Keyword(s):  
Water Pressure ◽  
Limit State ◽  
Bending Moment ◽  
Ultimate Limit State ◽  
Sheet Pile ◽  
Limit States ◽  
Working Stress ◽  
Geotechnical Design ◽  
Ultimate Limit State Design ◽  
Sheet Pile Wall

Recently, the limit states approach using factored strength has been recommended in geotechnical design. Some recent research has indicated that the application of limit states design using recommended load and strength factors leads to conservative designs compared with the conventional methods. In this study the influence of sheet pile wall geometry, type of water pressure distribution, and different methods of analysis on the maximum bending moment and achor rod force are presented. Recommendations are made to make the factored strength design compatible with conventional design. Key words: factored strength, working stress design, ultimate limit state design, anchored sheet pile wall, bending moment, anchor rod force.

Partial and total factors of safety in anchored sheet pile design

1991 ◽  
Vol 28 (6) ◽  
pp. 812-817 ◽  
Author(s):  
A. J. Valsangkar ◽  
A. B. Schriver
Keyword(s):  
Design Method ◽  
Water Pressure ◽  
Design Approach ◽  
Foundation Engineering ◽  
Sheet Pile ◽  
Depth Of Penetration ◽  
Limit States ◽  
Working Stress ◽  
Conventional Methods ◽  
Sheet Pile Wall

Recently, the limit states design approach has been recommended in geotechnical design. The Canadian Foundation Engineering Manual (1985) details the new approach for design of foundations, slopes, and retaining structures. Some recent research has indicated that the use of the limit states design approach leads to conservative designs when compared with conventional methods of design. Results of a parametric study are presented in this paper. The study investigated the influence of sheet pile wall geometry, type of water-pressure distribution considered, and different methods of analysis on the required depth of penetration of an anchored sheet pile wall. Modifications are suggested to make the new design method compatible with the conventional methods of design. Key words: factor of safety, working stress design, ultimate limit states design, anchored sheet pile wall.

Target reliability based design optimization of anchored cantilever sheet pile walls

2008 ◽  
Vol 45 (4) ◽  
pp. 535-548 ◽  
Author(s):  
B. Munwar Basha ◽  
G. L. Sivakumar Babu
Keyword(s):  
Failure Mode ◽  
Steel Sheet ◽  
Target Component ◽  
Sheet Pile ◽  
Limit States ◽  
Reliability Based Design ◽  
Section Modulus ◽  
Reliability Method ◽  
The Stability ◽  
Sheet Pile Wall

In this study, the stability of anchored cantilever sheet pile wall in sandy soils is investigated using reliability analysis. Targeted stability is formulated as an optimization problem in the framework of an inverse first order reliability method. A sensitivity analysis is conducted to investigate the effect of parameters influencing the stability of sheet pile wall. Backfill soil properties, soil – steel pile interface friction angle, depth of the water table from the top of the sheet pile wall, total depth of embedment below the dredge line, yield strength of steel, section modulus of steel sheet pile, and anchor pull are all treated as random variables. The sheet pile wall system is modeled as a series of failure mode combination. Penetration depth, anchor pull, and section modulus are calculated for various target component and system reliability indices based on three limit states. These are: rotational failure about the position of the anchor rod, expressed in terms of moment ratio; sliding failure mode, expressed in terms of force ratio; and flexural failure of the steel sheet pile wall, expressed in terms of the section modulus ratio. An attempt is made to propose reliability based design charts considering the failure criteria as well as the variability in the parameters. The results of the study are compared with studies in the literature.

Total and partial factors of safety in geotechnical engineering

1985 ◽  
Vol 22 (4) ◽  
pp. 477-482 ◽  
Author(s):  
L. D. Baikie
Keyword(s):  
Slope Stability ◽  
Factor Of Safety ◽  
Retaining Walls ◽  
Shallow Foundations ◽  
Deep Foundations ◽  
Foundation Engineering ◽  
Sheet Pile ◽  
Limit States ◽  
Partial Load ◽  
Geotechnical Design

The use of partial factors of safety in geotechnical design is introduced in the second edition of the Canadian Foundation Engineering Manual. The partial factors have been obtained from comparisons with conventional methods of analysis. Studies presented herein for simple slopes, cantilevered rigid retaining walls, flexible sheet pile walls, shallow strip foundations, and pile foundations indicate that modifications to some of the suggested partial load and resistance modification factors are necessary if comparable designs are to be obtained. Key words: factor of safety, partial factors, limit states design, slope stability, retaining walls, shallow foundations, deep foundations, bearing capacity.

Performance of temporary tie-backs under winter conditions

1981 ◽  
Vol 18 (4) ◽  
pp. 566-572 ◽  
Author(s):  
N. R. Morgenstern ◽  
D. C. Sego
Keyword(s):  
Air Temperature ◽  
Earth Pressure ◽  
Pressure Measurements ◽  
Sheet Pile ◽  
Freezing And Thawing ◽  
Railway Line ◽  
Winter Conditions ◽  
Design Requirements ◽  
The City ◽  
Sheet Pile Wall

The construction of an underpass in the City of Edmonton required the temporary relocation of the CNR main-line prior to the construction of a permanent bridge. The line was placed close to the underpass excavation which was supported by a tie-back sheet pile wall. Because of the stringent requirements associated with the presence of the railway line, the supports were designed on a conservative basis and observations of tie-back loads were taken over a period of 7 months.This note presents the observations of tie-back loads from January to July, 1977. Following installation in accordance with the design requirements, substantial fluctuations in tie-back load were observed for about 3 months. Then the loads fell off gradually to about 50% of the originally applied values. The variation of the load with time bears a strong correlation with average air temperature and is accounted for by the alternate freezing and thawing of the ground adjacent to the sheet pile wall. The ultimate decline in load is attributed to relaxation of the soil behind the wall during spring thaw. The case history draws attention to special requirements associated with interpretation of earth pressure measurements during winter con struction.

Experimental and numerical modelling of deformations of a sheet pile wall near a foundation

ce/papers ◽  
2018 ◽  
Vol 2 (2-3) ◽  
pp. 731-736
Author(s):  
Aykut OZPOLAT ◽  
H. Suha AKSOY ◽  
Mesut GOR
Keyword(s):  
Numerical Modelling ◽  
Sheet Pile ◽  
Sheet Pile Wall
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