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http://dx.doi.org/10.7781/kjoss.2013.25.1.061

Ultimate Strength and Design Method of Turn-buckle for Measuring Tensile Force  

Lee, Swoo Heon (School of Architecture and Civil Engineering, Kyungpook National University)
Shin, Kyung Jae (School of Architecture and Civil Engineering, Kyungpook National University)
Lee, Hee Du (School of Architecture and Civil Engineering, Kyungpook National University)
Publication Information
Journal of Korean Society of Steel Construction / v.25, no.1, 2013 , pp. 61-70 More about this Journal
Abstract
A turn-buckle is capable of adjusting the tensile force by left-hand threads and right-hand threads between tension members. There are different types of turn-buckles according to tension member and connection form but the practical and existing turn-buckles are incapable of measuring the tensile force. A turn-buckle for adjusting and measuring tensile force has therefore been developed. This study shows the ultimate strength and reliability for measurement of the new turn-buckles through finite element analysis of the developed ones. From analytic results of the new turn-buckles which have the measurement limit loads of 100kN, 200kN and 300kN, the ultimate strength is approximately five times stronger than the measurement limit capacity. Additionally, a review of the new turn-buckle, which has the measurement limit load of over 300kN, shows that there is a tendency for the size of turn-buckle to become larger. So the connection devices were designed and the loading test was conducted from the concept that the parallel connection of turn-buckle with 300kN capacity can measure the tensile force of 600kN. The results of parallel loading test show the sufficient possibility. Furthermore, the mock-up test was constructed to investigate the release of initial load and corrosion when the new turn-buckle is installed at the outdoor and exposed to rain and atmosphere.
Keywords
turn-buckle for measuring tensile force; measurement limit load; ultimate strength; reliability; parallel connection; temperature effect;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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