http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
폭이 변하는 Transversely Isotropic 판의 탄성좌굴
윤순종(S. J. Yoon),정재호(J. H. Jung) 한국복합재료학회 2002 Composites research Vol.15 No.5
본 연구는 폭이 변하는 transversely isotropic 판에서 평행한 변에 서로 크기가 다른 면내 축방향 압축력이 작용하며, 경사진면에는 면내 전단력이 작용하는 경우 판의 탄성좌굴거동에 관한 해석적 연구결과이다. 폭이 변하는 등방성판의 좌굴해석을 위해 개발된 기존의 이론적 해를 확장하여 transversely isotropic 재료의 역학적 성질을 고려한 좌굴해석을 할 수 있도록 하였다. 이론식은 power series를 사용하여 유도하였으며, 유한요소해석을 부가적으로 수행하고 그 결과를 이론식을 사용한 해석결과와 비교, 검토하였다. Presented in this paper are the results of an analytical investigation pertaining to the elastic buckling behavior of transversely isotropic plate with variable width subjected to unequal uniaxial compression forces at the ends and in-plane shear forces at the sides. The existing analytical solution developed for the isotropic plates is extended so that the transversely isotropic material properties can be taken into account in the plate buckling analyses. For the derivation of buckling equation the power series solution is employed. Graphical forms of results for finding the buckling strength of tapered plates are presented. In addition, the finite element analysis is also conducted. The results are compared and discussed.
외부긴장재의 정착위치에 따른 거더의 인장플랜지 국부응력변화 분석
남정훈(J.H. Nam),최훈(H. Choi),박주경(J.K. Park),이승식(S. Lee),윤순종(S.J. Yoon) 한국구조물진단유지관리학회 2004 한국구조물진단학회 학술발표회논문집 Vol.- No.-
In this paper, we discussed the external prestressing technique to strengthen the deteriorated steel-concrete composite bridge girder In this technique, the tension flange of steel girder needs to make a hole to install anchorage system. In this case, the tension flange of girder may experience the local stress change, stress concentration around the hole, and yielding of the flange material. As a part of continuing research pertaining to the structural behavior of deteriorated steel girder, we focussed on the local stress change of tension flange with holes for anchorage system. From this investigation It was found that the hole drilled on the flange under tension due to self-weight and sustained live load affects the stress change of flange significantly.
외부긴장재의 정착위치에 따른 거더의 인장플랜지 국부응력변화 분석
남정훈 ( J. H. Nam ),최훈 ( H. Choi ),박주경 ( J. K. Park ),이승식 ( S. Lee ),윤순종 ( S. J. Yoon ) 한국구조물진단유지관리공학회 2004 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.8 No.2
In this paper, we discussed the external prestressing technique to strengthen the deteriorated steel-concrete composite bridge girder. In this technique, the tension flange of steel girder needs to make a hole to install anchorage system. In this case, the tension flange of girder may experience the local stress change, stress concentration around the hole, and yielding of the flange material. As a part of continuing research pertaining to the structural behavior of deteriorated steel girder, we focussed on the local stress change of tension flange with holes for anchorage system. From this investigation it was found that the hole drilled on the flange under tension due to self-weight and sustained live load affects the stress change of flange significantly.
노후 강교량의 내하력 향상을 위한 외부긴장력 도입방법에 관한 연구
주형중 ( H. J. Joo ),박정환 ( J. H. Park ),정재호 ( J. H. Jung ),김상석 ( S. S. Kim ),윤순종 ( S. J. Yoon ) 한국구조물진단유지관리공학회 2004 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.8 No.2
In this paper, we discussed the external post-tensioning utilized to improve the load carrying capacity of deteriorated steel-concrete composite bridges. Steel-concrete composite plate girder with external post-tensioning which installed underneath the tension flange of I-girder was modeled and analyzed using the elastic beam-column theory. The location of post-tensioning device installation and the magnitude of post-tensioning force are the parameters in the analysis. From the study, it was found that the location and magnitude of external post-tensioning force is important. To strengthen the deteriorated steel-concrete bridge bridges, accurate estimation technique of the local load carrying capacity of the deteriorated bridges must be established prior to develop the effective way of strengthening or recovering the deficiency of capacity. This paper may contribute to establishing the reliable design guidelines.