Structural Performance of Flexural Members Enlarged with Epoxy Mortar System at Soffit

변형에폭시계 재료를 사용한 하부증대 보의 구조적 성능

  • 홍건호 (정회원, 호서대학교 건축학부) ;
  • 조하나 (이화여대 건축학과) ;
  • 신영수 (정회원, 이화여대 건축학과) ;
  • 정혜교 (정회원, 현대건설 기술연구소 책임연구원)
  • Published : 1998.10.01

Abstract

This paper is aimed to investigate structural performance of flexural members enlarged with epoxy mortar at soffit. Main test variables are steel ratio and interface treatment method and six test beams are tested to investigate the effect of each test variables on maximum load capacity, load-deflection and moment-curvature relationship, interface behavior and failure mode. Test results show that section enlarged beams can carry almost same load of the monolithic beams with same size and the flexural stiffness and cracking moments are increased about 2.5 times and 50 to 70%of failure moment in comparison with same sized control beam, respectively. However, deflections and curvatures are decreased at the same load and interface fractures are not discovered at the ultimate load.

Keywords