Influence of subgrade strength on the performance of geocell-reinforced foundation systems-Reference-Cited by-同舟云学术

Influence of subgrade strength on the performance of geocell-reinforced foundation systems

Published:2013-12 Issue:6 Volume:20 Page:376-388
ISSN:1072-6349
Container-title:Geosynthetics International
language:en
Short-container-title:Geosynthetics International

Author:

Biswas A.¹,Murali Krishna A.²,Dash S.K.³

Affiliation:

1. Research Scholar, Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati – 781039, India, Telephone: +91 9085670531, Telefax: + 91 361 2582440, E-mail: b.arghadeep@iitg.ernet.in

2. Assistant Professor, Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati – 781039, India, Telephone: + 91 361 2582429, Telefax: + 91 361 2582440, E-mail: amurali@iitg.ernet.in

3. Associate Professor, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur – 721302, India, Telephone: +91 3222 282418, Telefax: +91 3222 255303, E-mail: sujit@civil.iitkgp.ernet.in

Abstract

ABSTRACT: Physical model tests were performed on geocell-reinforced foundation systems with circular footings to study the influence of the strength of the subgrade layer. Model tests were conducted with a 150 mm diameter circular footing supported on foundation beds with varied configurations. Three different series of tests were conducted using a clay subgrade with undrained cohesion in the range of 7–60 kPa and dense sand at 80% of relative density. The results showed that the performance of the geocell-reinforced foundation systems was highly dependent on the subgrade strength. A maximum improvement factor of about 11.6 was observed for very soft subgrade with cu = 7 kPa, which decreased to about 3 for stiffer subgrade having cu = 30 kPa under similar test conditions and configuration. In addition, the variation of bearing capacity improvement factors was observed to be significantly influenced by footing settlement and geocell height.

Publisher

Thomas Telford Ltd.

Subject

Geotechnical Engineering and Engineering Geology,Civil and Structural Engineering

Link

https://www.icevirtuallibrary.com/doi/pdf/10.1680/gein.13.00025

Reference54 articles.

1. A bearing capacity calculation method for soil reinforced with a geocell

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