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절곡 강판을 볼트로 체결한 강판-콘크리트 합성보의 휨강도 평가

Flexural Strength Evaluation of Steel Plate-Concrete Composite Beam using Bolted

  • 한명환 (경기대학교 일반대학원 건축공학과) ;
  • 최병정 (경기대학교 일반대학원 건축공학과)
  • Han, Myoung-Hwan (Department of Architectural Engineering, Kyonggi University Graduate School) ;
  • Choi, Byong-Jeong (Department of Architectural Engineering, Kyonggi University Graduate School)
  • 투고 : 2018.04.13
  • 심사 : 2018.06.01
  • 발행 : 2018.06.30

초록

강판 콘크리트 합성보는 2개의 이질 재료를 결합하기 위해 강판, 콘크리트 및 전단 연결재로 구성된다. 일반적으로 강판은 기존의 합성보에 용접하여 조립된다. 본 연구에서는 전단 강도를 줄이고 작업성을 향상시키기 위해 SPC Beam이라 불리는 새로운 강판 콘크리트 합성 보(Beam)를 개발했다. SPC 보는 전단 연결재 없이 절곡된 강판과 콘크리트로 구성된다. 절곡된 강판은 용접 대신 고강도 볼트로 조립된다. 현장 건설의 작업성을 향상시키기 위해 슬래브와 접합부에 모자 모양의 Cap이 부착되어 있다. 변위 제어 모드에서 2점 가력의 단조 하중 시험을 수행했다. 정모멘트와 부모멘트에 대한 시편의 굽힘강도는 소성 응력 분포법에 의해 계산되었다. 수행한 시험 결과에 따르면 새로운 SPC 보의 휨 강도는 완전 합성보의 강도의 80% 이다. Cap의 간격을 조절하여 합성율의 증가가 가능했다. 본 연구에서는 정 부모멘트 역에서의 대표 형상을 대상으로 하였기 때문에, 단면 형상과 Cap을 변수로 추가적인 실험과 해석을 통해 SPC Beam의 성능 검증이 수행될 것이다.

A steel-plate concrete composite beam is composed of a steel plate, concrete and shear connector to combine inhomogeneous two materials. The steel plate is assembled by welding an existing composite beam. In this study, new steel-plate concrete composite beam, called a SPC Beam, was developed to reduce the shear connector and improve the workability. The SPC Beam was composed of folding steel plates and concrete, without a shear connector. The folding steel plate was assembled using high strength bolt instead of welding. To improve the workability in field construction, a hat-shaped Cap was attached to the junction with a slab. Monotonic load testing under two points was conducted under displacement control mode. The flexural strength of the specimen for positive moment and negative moment was calculated using the plastic stress distribution method. The test results showed that the flexural strength of the new SPC Beam had 80% of the strength of a complete composite beam. In addition, increasing the composite ratio was possible through clearance controls of the cap. In this study, the performance of the SPC Beam was verified through additional experiments and analyses with the cross-sectional shape and cap as variables, because the representative shape in the positive negative moment region is targeted.

키워드

참고문헌

  1. Sung-Pil Chang, Chang-Su Shim, Composite structures, Goomibook, 2006.
  2. RIST, Composite slabs and Beams using steel decking, Research institute of Industrial Science and Technology, Goomibook, 2011.
  3. Sang-Seup Kim, Sang-Mo Kim, Sung-Bae Kim, o Dong-Gee Seo, Kyu-Suk Kim, An Experimental Study on the Behavior of the T-type Steel Composite Beam, Journal of Korean Society of Steel Construction, KSSC, vol. 16, no. 2, pp. 225-233, 2004. DOI: http://www.koreascience.or.kr/article/ArticleFullRecord.jsp?cn=GGJHBP_2004_v16n2s69_225
  4. Byung-Wook Heo, Myong-Kwak Kwak, Kyu Woong Bae, Sang-Min Jung, Suk-Kuy Kang, Flexural Capacity of the Profiled Steel Composite Beams with Truss Deck Plate, Journal of Korean Society of Steel Construction, KSSC, vol. 19, no. 4, pp. 413-423, 2007. DOI: http://www.koreascience.or.kr/article/ArticleFull Record.jsp?cn=GGJHBP_2007_v19n4_413
  5. AIK, Korea building code and commentary-structural, Architectural Institute of Korea, 2009.
  6. KSSC, Standard of design of steel structure by load and resistance factor design method, Korean Society of Steel Construction , 2014.
  7. AISC, Steel Construction Manual, American Institute of Steel Construction, 2011.
  8. CEN, Eurocode 4: Design of composite steel and concrete structures, ENV 1994-2, 1994
  9. William T. Segui, Steel Design (International Student Edition), Thomson, 2006.
  10. AIK. KBC 2009, Korean building code-structural. Seoul, Korea, Architectural Institute of Korea, 2009.