Improvement of Pullout Loads by Variation of Two Load Points in Anchorage System

• Published in: KSCE journal of civil engineering Vol. 23; no. 8; pp. 3330 - 3339
• Main Authors: Lee, Kang-Il, Lee, Jai-Wook, Kim, Jaehong
• Format: Journal Article
• Language: English
• Published: Seoul Korean Society of Civil Engineers 01.08.2019; Springer Nature B.V; 대한토목학회
• Subjects: Anchorages; Anchors; Behavior; Bond stress; Civil Engineering; Compression; Engineering; Geotechnical Engineering; Geotechnical Engineering & Applied Earth Sciences; Industrial Pollution Prevention; Interference; Load; 토목공학; anchorage system; multiple compression type anchor; pullout load; load points; bond stress
• ISSN: 1226-7988; 1976-3808
• DOI: 10.1007/s12205-019-1532-x

Multiple compression type anchors were developed to relive the problem of uneven exertions of bond stress across the bond lengths of existing anchors. Unlike existing anchors, these anchors can have different lengths of strand to adjust the spacing of load points between anchors and also can have different orders of tensions of anchors to ensure even exertions of bond stress across the bond length. The spacing of load points and the order of tensions are considerations that can affect the pullout load of anchors because interference effects between anchors vary with them. However, existing studies have investigated the pull-out characteristics of anchors without considering the aforementioned factors. In this study model tests were conducted to investigate the pull-out characteristics of multiple compression type anchors that vary with the spacing of load points between anchors and the order of tensions. Through the results of the study on the pull-out characteristics of two load points of anchorage system, it was identified that interference effects between anchors varied with the spacing of load points between anchors and the order of tensions to affect the pullout load.