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http://dx.doi.org/10.15683/kosdi.2021.3.31.128

Stability Evaluation of Anchors Using Lift-off Field Test  

Choi, Tae Sic (Department of Civil Engineering, Daejin University)
Yun, Jung Mann (Department of Civil Engineering, Shin Ansan University)
Kim, Yong Seong (Department of Regional Infrastructure Engineering, Kangwon National University)
You, Seung Kyong (Department of Civil Engineering, Myongji College)
Lee, Kang Il (Department of Civil Engineering, Daejin University)
Publication Information
Journal of the Society of Disaster Information / v.17, no.1, 2021 , pp. 128-142 More about this Journal
Abstract
Purpose: This study examines the safety management of anchors that have already been constructed and evaluates the results of lift-off tests conducted at the site. The purpose of the project is to study countermeasures if necessary. Method: Compare the residual load gained after the lift-off test at 36 points behind the site with the preemptive load, allowable load, and design load. We also analyze stability through this and evaluate the stability of anchors. Results and Conclusion: The residual tension at 26 points remained stable. However, the residual load at 10 points was analyzed to be greater than the designed load and less than the allowable load, and it was evaluated as an instability that could cause fracture problems. Therefore, anchors with unstable conditions at 10 points should be monitored and monitored through periodic measurements and quality tests, and the anchor should be observed at the surrounding points as well as the relevant points to maintain stability.
Keywords
Anchor; Lift-off Test; Allowable Load; Design Load; Residual Load;
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