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Experimental study on Static Behavior of H-beam prestressed with Multi-Stepwise TPSM  

An, Jin Hee (연세대학교 사회환경시스템공학부)
Jung, Chi Young (연세대학교 사회환경시스템공학부)
Kim, Jun Hwan (연세대학교 사회환경시스템공학부)
Kim, Sang Hyo (연세대학교 사회환경시스템공학부)
Publication Information
Journal of Korean Society of Steel Construction / v.20, no.2, 2008 , pp. 247-258 More about this Journal
Abstract
In this study, static loading tests were performed on H-beam specimens to assess the static behavior of H-beam prestressed with multi-stepwise thermal prestressing method (TPSM). The amount of induced thermal prestress and connection type were differentiated among the 400-mm-high and 6,000-mm-long H-beam specimens to evaluate their effect on the behavior of the beams. From the experimental results, it between the H-beam and the cover-plate increased in yielding load by 13~18%, whereas stiffness increased by 27~34%. In case of specimens with both bolting and welding connection, yie lding load increased by 18~29% and stiffness increased by 43~51%. Multi-stepwise initial stress distribution was also observed from the prestressed specimens, verifying the effectiveness of the multi-stepwise TPSM. By application of the multi-stepwise TPSM, a significant increase in yielding load and stiffness can be achieved, hence increasing sectional and prestressing efficiencies.
Keywords
multi-stepwise; thermal prestressing; prestress; cover plate; static behavior;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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