NUMERICAL INVESTIGATION OF EXPANSION ANCHORS RESPONSE TO PULL-OUT AND SHEAR LOADS

The helical pile is a foundation system that is used to support new buildings and for retrofitting deficient existing foundations. The performance of expansion anchors used to attach the helical pile connectors to foundations is assessed numerically. The anchors response to pull-out and shear loads was evaluated using non-linear finite element analysis. It was found that the pre-tension load had no influence on the anchor ultimate capacity but affected the anchor response at service load levels and the displacement at failure. Under pull-out loading, increasing the anchor diameter resulted in a more brittle response but did not affect the ultimate capacity when the concrete tensile strength dominated the response. For cases governed by the expansion mechanism, increasing the anchor diameter resulted in higher ultimate capacities and a more ductile behaviour. No interaction between anchors was observed for spacing ≥ 1.67 times anchor’s embedment depth. The anchor shear capacity was found to be dominated by the steel failure mode.

Name thesis:degree_name

MES

Discipline thesis:degree_discipline

Civil and Environmental Engineering

Year dc:date.issued

2008

Author dc:creator

• Elsharnouby, Mahmoud Meckkey

Advisors dc:contributor.advisor

• El Naggar, M. Hesham
• El Damatty, Ashraf
• Hinchberger, Sean

• Helical pile
• specialized connector
• concrete
• cracking
• anchor
• finite element
• analytical model

Handle dc:identifier.uri

https://hdl.handle.net/20.500.14721/19503

OAI identifier oai:identifier

oai:uwo.scholaris.ca:20.500.14721/19503