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Title |
Analysis of Effects of Reshoring Works on Short and Long Term Deflections of Flat Plates
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Authors |
김재요(Jae-Yo Kim) ; 박수범(Soo-Beom Park) |
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DOI |
https://doi.org/10.11112/jksmi.2017.21.1.040 |
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Keywords |
플랫 플레이트 ; 처짐 ; 동바리 재설치 ; 시공하중 ; 장기 효과 Flat plate ; Deflection ; Reshoring ; Construction load ; Long term effect |
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Abstract |
RC flat plates may be governed by a serviceability as well as a strength condition, and a construction sequence and its impact on the distributions of gravity loads among slabs tied by shores are decisive factors influencing short and long term behaviors of flat plate. Over-loading and tensile cracking in early-aged slabs significantly increase the deflection of a flat plate system under construction, and a reshoring work may be helpful in reducing slab deflections by controlling the vertical distributions of loads in a multi-shored flat plate system. In this study, a effect of reshoring works on short and long term deflections of flat plate systems are analyzed. The slab construction loads with various reshoring schemes and slab design and construction conditions are defined by a simplified method, and the practical calculation of slab deflections with considering construction sequences and concrete cracking and long term effects is applied. From parametric studies, the reshoring works are verified to reduce slab deflections, and the optimized conditions for the reshoring works and slab design and constructions are discussed.
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