밴드형 전단보강근으로 보강된 무량판 슬래브 내부접합부의 구조 거동 평가

Bum-Sik Lee, Seong-Sik Park, Ji-young Park, Jong-Dae Bang, Myoung-Hoon Jun, Gun-Hee Cho
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Abstract

불균형 모멘트가 작용하는 무량판 슬래브 내부접합부를 대상으로 폐쇄형 전단보강근으로 보강한 1개 실험체와 밴드형 전단보강근으로 전단보강한 2개의 실험체를 제작하여 구조성능을 평가하였다. 구조성능평가 결과, 구조설계기준(KBC 2009)으로 평가한 불균형모멘트는 실험결과의 95%로 매우 잘 일치하나, 개정 구조설계기준(KCI 2012)으로 산정한 불균형모멘트는 실험결과의 약 60%에 불과하여, 내부접합부의 불균형모멘트를 과대평가하는 것으로 나타났다. 밴드형 전단보강근은 기존 전단보강근과 비교하여 유사한 구조성능을 가지며, 시공성이 우수한 것으로 나타나 중진지역의 무량판구조물 설계 시 적용할 수 있는 것으로 평가되었다. 【This study performs an experimental investigation to evaluate the behavior of RC flat plate interior joints specimens. Three 60 percent scale Flat Plate interior specimens assemblies representing a portion of a Flat Plate Apartment Structural System subjected to simulated seismic loading (unbalanced moments) under constant axial load were tested, including one specimens with ordinary shear reinforcement and two specimens with folded bend type shear reinforcement. Test results are shown that (1) the design code KBC 2009 is accurate estimate the behavior of specimens. (2) Two types shear reinforcement have a similar structural behavior, but construction work of rebar with folded bend type shear reinforcement is easier than that of ordinary shear reinforcement. (3) In moderate seismic region, RC Flat Plate interior joint with folded bend type shear reinforcement is apply to structural design of Flat Plate.】
用松紧带型传单加固肌加固的无梁板平板内部接合处的结构行为评价
以不均衡力矩作用的无梁板内部接合处为对象,制作了用封闭型传单加固肌加固的1个实验体和用带子型传单加固肌加固的2个实验体,评价了结构性能。结构性能评价结果、结构设计为准(kbc 2009),评价的不平衡力矩是由95%的实验结果吻合得很好,结构设计修改为标准(kci 2012),进行计算的不平衡力矩的实验结果的只有约60%,内部接合高估财富的不平衡力矩的出现。带子型传单加固肌与现有的传单加固肌相比,具有类似的结构性能,施工性能优秀,被评价为可以在重津地区的无梁板构造物设计时使用。This study performs an experimental investigation to evaluate the behavior of RC flat plate interior joints specimens。Three 60 percent scale Flat interior specimens assemblies representing a portion of a Flat Plate Apartment Structural System subjected to simulated seismic loading (unbalanced moments) underconstant axial load were tested, including one specimens with ordinary shear reinforcement and two specimens with folded bend type shear reinforcement。Test results are shown that (1) the design code KBC 2009 is accurate estimate the behavior of specimens。2 . Two types shear reinforcement have a similar structural behavior, but construction work of rebar with folded bend type shear reinforcement is easier than that of ordinary shear reinforcement。(3) In moderate seismic region, RC Flat Plate interior joint with folded bend type shear reinforcement is apply to structural design of Flat Plate;
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