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주대봉 ( Joo Dae-bong ),고영권 ( Ko Young-kwon ),양근혁 ( Yang Keun-hyeok ),변항룡 ( Byeon Hang-ryong ) 한국구조물진단유지관리공학회 2010 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.14 No.1
The flexural behavior of masonry wall strengthened with prestressed wire-ropes was examined and compared with that of unstrengthened masonry wall. Test results showed that the ultimate strength and energy dissipation capacity of strengthened masonry wall were higher than those measured from unstrengthened masonry wall by 208% and 207%, respectively. In addition, the unstrengthened masonry wall failed in the rocking while the strengthened masonry wall showed rocking and diagonal tensile failure modes, indicating that the developed strengthened procedure has a significant influence on the failure mode of masonry wall.
긴장재 편심이 외부 포스트텐션 경량콘크리트 보의 휨 거동에 미치는 영향
주대봉(Joo Dae-Bong),양근혁(Yang Keun-Hyeok),변항용(Byun Hang-Yong) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
The present study examined the effect of tendon eccentricity on the flexural behavior of external post-tensioned lightweight concrete beams under a symmetrical two-point top loading. The designed compressive strength and unit weight of concrete were 35 ㎫ and 1800 ㎏/㎥, respectively. Test results revealed that the ductility of beam specimens decreased as the tendon eccentricity increases. The stress increase in the unbonded external tendon at ultimate was commonly higher than predictions of ACI 318-08 equations.
주대봉(Joo, Dae-Bong),양근혁(Yang, Keun-Hyeok),변항용(Byeon, Hang-Yong) 한국구조물진단유지관리학회 2011 한국구조물진단학회 학술발표회논문집 Vol.15 No.1
The present study reports the flexural behavior of post-tensioned lightweight concrete continuous one-way slabs subjected to uniform loads. Test results showed that a minimum amount of mild longitudinal reinforcement that is specified in ACI 318-08 was required to control a crack width of the post-tensioned lightweight concrete slabs. The measured flexural capacity of slab specimens and stress increase of the unbonded tendons were higher than predictions obtained from ACI 318-08 provision.