00196576

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http://onlinepubs.trb.org...s/trr/1978/678/678-005.pdf

https://scholar.google.co...ndau&publication_year=1978

The theoretical approach to the design of sand drain installations has often proved inadequate in the prediction of field performance. The divergence of field performance from designs based on data obtained from tests of undisturbed samples has been found to be greatest where displacement methods of sand drain installation are employed and least where nondisplacement techniques are used. The nondisplacement methods most commonly employed involve controlled jetting and augering systems. Nondisplacement methods are not equivalent with respect to the avoidance of subsoil disturbance; therefore, some divergence between designs based on undisturbed sample test data and field performance is still encountered. This paper reviews the basis for using sand drains and the background of the development of nondisplacement techniques and presents a systematic approach applicable to the evaluation of all installation methods. This approach is essential if the designer is to be provided with all tools necessary for the development of sand drain designs that have a reliable factor of safety when applied in construction, as the nondisplacement methods in use today do not produce comparable results in the field. The results of the Maine test section are reviewed to demonstrate how equivalent designs can be developed for specific methods of installation and specific types of soil. /Author/

This paper appeared in TRB Research Record No. 678, Tolerable Movement of Bridge Foundations, Sand Drains, K-Test, Slopes and Culverts. Author's closure appeared in TRB Research Record Subdrainage and Soil Moisture, No. 705. Publication of this paper sponsored by Committee on Embankments and Earth Slopes. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01411517

Holtz, R D

pp 22-36

1978

Transportation Research Record

030902823X

Print

Figures (6) ; References (36) ; Tables (3)

Design; Dislocation (Geology); Performance; Sand drains; Soil stabilization

Field performance; Stabilization

Design; Geotechnology; Highways

TRIS, TRB

Aug 28 1979 12:00AM

• ANALYSIS OF LONG-SPAN CULVERTS BY THE FINITE ELEMENT METHOD
• ANALYSIS OF SETTLEMENT DATA FROM SAND-DRAINED AREAS
• BRIDGE FOUNDATIONS MOVE
• MOVEMENTS OF BRIDGE ABUTMENTS AND SETTLEMENTS OF APPROACH PAVEMENTS IN OHIO
• PROBABILITY OF SLIDING OF SOIL MASSES. ABRIDGMENT
• SETTLEMENT RATE EXPERIENCE FOR THE USE OF SAND DRAINS IN A TIDAL MARSH DEPOSIT. ABRIDGMENT
• SOIL-CULVERT INTERACTION METHOD FOR DESIGN OF METAL CULVERTS
• SURVEY OF BRIDGE MOVEMENTS IN THE WESTERN UNITED STATES
• THE IOWA K-TEST
• Tolerable Movements of Bridge Foundations