Effect of sheet pile wall on the load-settlement behaviour of square footing nearby excavation

Abstract Laboratory model is used in this study to investigate the behavior of centrally loaded square footing resting on gypseous soil, and surrounded by a sheet pile wall at a distance of 2B from the footing edge and extend in depth to 2B as well. During this study the soil were subjected to ten cycles of saturation and drainage at one-week interval to simulate heavy rainfalls or floods. It should be noted that the soaking water were added only outside the area surrounded by the sheet pile. Four points were chosen to detect gypsum solubility, three of them below the footing edge at different depths and one outside the sheet pile wall for comparison. It has been found that the dissolved gypsum below the footing is significantly less than the one outside the sheet pile wall. For each cycle of saturation-drainage the gypsum content is found to be reduced by 3 % and 0.8 % for the outsider point and for average of the three points respectively. Settlement during first cycle of saturation – drainage was twice as the second cycle and about four times of the third cycle. However, this first cycle settlement is about 25 % of the settlement of footing where no sheet pile wall is used. To sum up, the sheet pile wall found to be an effective protection to reduce the collapsibility of gypsum soil and to reduce footing settlement.

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Static analysis model for double sheet-pile wall structures

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts ◽

10.1016/0148-9062(89)90861-9 ◽

1989 ◽

Vol 26 (1) ◽

pp. A41

Keyword(s):

Static Analysis ◽

Sheet Pile ◽

Analysis Model ◽

Wall Structures ◽

Sheet Pile Wall

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

Canadian Geotechnical Journal ◽

10.1139/t96-107-327 ◽

1996 ◽

Vol 33 (5) ◽

pp. 815-821 ◽

Cited By ~ 4

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.

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EFFECTIVENESS VERIFICATION AND EXTERNAL FORCES ESTIMATION OF SHEET PILE WALL AGAINST LATERAL FLOW OF LIQUEFIED GROUND

Journal of Japan Society of Civil Engineers Ser A1 (Structural Engineering & Earthquake Engineering (SE/EE)) ◽

10.2208/jscejseee.70.i_242 ◽

2014 ◽

Vol 70 (4) ◽

pp. I_242-I_251

Author(s):

Ikki KATO ◽

Masanori HAMADA

Keyword(s):

Lateral Flow ◽

Sheet Pile ◽

External Forces ◽

Sheet Pile Wall

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Performance of temporary tie-backs under winter conditions

Canadian Geotechnical Journal ◽

10.1139/t81-066 ◽

1981 ◽

Vol 18 (4) ◽

pp. 566-572 ◽

Cited By ~ 4

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.

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