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직교이방성 판이론에 의한 FRP 보강 콘크리트 슬래브의 휨해석
손경욱 ( Kyong Wook Son ),정재호 ( Jae Ho Jung ),정상균 ( Sang Kyoon Jeong ),윤순종 ( Soon Jong Yoon ),이승식 ( Seung Sik Lee ) 한국복합재료학회 2004 Composites research Vol.17 No.2
본 연구는 FRP 보강 콘크리트 슬래브의 휨거동에 관한 이론적 연구로서 FRP 보강 콘크리트 슬래브를 구조적 직교 이방성판으로 간주하고 고전적 직교이방성판이론에 따른 휨해석 및 유한요소해석을 수행하였다. FRP 보강 콘크리트 슬래브를 직교이방성판으로 모델링하기 위해서는 각 하중단계별로 실제 구조물의 거동에 부합하는 직교이방성판의 휨강성을 결정하는 것이 중요하다. 본 연구에서는 탄성등가법을 적용하여 FRP 보강 콘크리트 슬래브와 등가인 직교이방성판의 휨강성을 결정하였으며, 탄성등가법에 의해 결정된 휨강성을 사용하여 유한요소해석 수행을 위한 강성행렬의 결정방법을 제안하였다. 또한, 이론식에 의한 해석결과와 제안된 강성행렬을 사용하여 해석한 유한요소해석 결과를 실험 결과와 비교하였다. In this study, analytical investigations on the flexural behavior of FRP reinforced concrete slab were discussed. In the derivation of analytic solution, the FRP reinforced concrete slab was modeled as a structural orthotropic plate. To determine the flexural rigidities of an orthotropic plate model, the elastic equivalence method was employed. In the finite element analysis, the approximate method to determine the rigidity matrix of orthotropic plate element was also suggested using the elastic equivalence method. The results obtained by the analytical solution and the finite element analysis were compared with that of experiment.
김효원(Hyo-Won Kim),김학군(Hak-Goon Kim),손경욱(Kyong-Wook Son),최동철(Dong-Chul Choi),윤순종(Soon-Jong Yoon) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
The railway bridge of the domestic still has been used steel base such as sperical bearing and pot bearing widely. However the bearing of steel series is occured corrosion frequently reduced durability and raised maintenance cost excessively due to the nature of the material. If the elastomeric bearing which is widely used in highway bridge is applied to the railway bridge it will be able to compensate this defect a lot. In order to apply to the railway bridge used for highway bridge is needed the control of the bridge ends deflection lateral displacement and negative reaction. Therefore the elastomeric bearing can be applied to the railway bridge enough if installed negative reaction key for control of the bridge ends deflection improved shear wedge performance for control of the lateral force adjust the thickness of the elastomeric pad for the minimize deflection in addition can be economic design of sub-structures due to damping effect.