The study of configuration effect of helical anchor group on retaining wall displacement

ABSTRACT

Despite numerous applications of helical anchors in slope stabilisation and retaining wall construction, a limited number of studies have been conducted on their performance. In the present study, the results of investigating 4 types of helical anchors and three configurations of reinforcement are presented. The tests were carried out on sandy soil using a test box, load cell, indicator, and 5 dial gauges. The present work aims to evaluate the effect of anchor geometry and its configuration on wall displacement. In all tests, particle image velocimetry (PIV) method was applied to study the shape of the slip surface. The results showed that diamond configuration outperforms square one in terms of bearing capacity, wall crest displacement, and its deformation. Moreover, in all tests, an increase in the number of helices resulted in a descending trend in bearing capacity increase and a decrease in wall displacement, suggesting the reduction of efficiency by increasing the number of plates. The results also show that anchor configurations and the number of helices are more effective than the number of anchors in increasing the bearing capacity.

KEYWORDS:

• Helical anchor
• anchor group
• wall
• particle image velocimetry
• physical modelling

Disclosure statement

No potential conflict of interest was reported by the author(s).

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.