• International Journal of Highway Engineering
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• v.11 no.3
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• pp.151-161
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• 2009

This study was conducted to investigate the characteristics of the curling behavior of long-span pavement slabs under environmental loads. By developing and using finite element models of the long-span pavement slabs, the stress distribution and the effects of slab length, slab thickness, stiffness of underlying layers, and the restraints of the slab ends on the curling behavior were analyzed. In addition, the field experiments were performed with the actual long-span pavement slab to obtain the curling behavior of the real structure under environmental loads. As a result of this study, it was found that the vertical displacements of the long-span pavement slab along the centerline due to the curling behavior were zero except for the areas near the slab ends, and the curling stresses were maximum and constant where the displacements were zero. The slab length and the stiffness of underlying layers did not affect the maximum curling stresses. The restraints at the slab ends made the curling stresses occur near the slab ends, but did not much affect the maximum curling stresses.

• 건축구조
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• v.13 no.3
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• pp.86-87
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• 2006

대공간구조물의 계획을 위하여 장스팬 구조물의 계획을 실시하였다. 보나 슬래브 부재는 상부에 압축력과 하부에 인장력을 받는다. 일반구조체로 120M 의 장스팬을 감당할 수 없으므로 케이블의 인장력을 이용한 대공간구조물을 계획하였다.

• Proceeding of KASS Symposium
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• 2008.05a
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• pp.66-69
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• 2008

This study presents deflection analysis of long span structures for pedestrian bridge on crossroads. For long span structures, the size of structural members should be determined considering the esthetic view and vehicle below the structures. As a result, the slenderness ratio of members is increased and the structure may be suffered from significant deflection. The under-tensioned system on lower part of the structure, is applied in order to reduce the deflection and the size of members. In this regard, the under-tensioned system enables the load of upper parts to carη to the end of beam by means of tensional force in cable. In addition, effectiveness of under-tensioned system can be different depending on the size of cable, the number and spacing of posts. This study is performed with conforming the effect by analytical various parameters (size of cable, number and spacing of post). Dead and live loads is supposed to apply in the slab, and the analytical result by MIDAS program are presented addressing the effect of the under-tensioned system.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2013.04a
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• pp.109-110
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• 2013

국내에서 최초로 장스팬 프리플렉스 합성보에 대한 내화성능을 평가하고 그 결과를 분석하였다. 내화성능평가는 재하시험과 비재하시험을 대상으로 하였으며, 콘크리트 폭렬의 영향성과 뿜칠피복재의 단열효과에 의한 성능확보 요인을 분석하였다. 본 논문은 국내 최장 합성보의 내화구조 인정신청에 따른 성능확인 결과이며, 향후 다양한 합성보 개발에 참고가 될 수 있을 것으로 기대한다.

• Proceeding of KASS Symposium
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• 2008.05a
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• pp.155-158
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• 2008

As the span of spatial structure is getting longer, the law frequency of the structure makes the wind-induced response much increased. However, there are lots of hardships to establish the economical structural systems due to the fact that an relative equation between the frequency and the span of the domestic spatial structures is not existed in the stage of the basic planning design. Therefore, among the large-span structures, this paper focused on the relationship between the frequency and the span of the world-cup stadium built in 2000s. The relative equation between the frequency and span is compared with the data measured in Japan. Moreover, we are willing to provide the basic study by suggesting the summary equation in this paper.

• Journal of Korean Association for Spatial Structures
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• v.9 no.1
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• pp.79-85
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• 2009

As a recent spatial structure have become long-spaned and light, stiffness of out-plane is reduced significantly. Due to this, it is necessary to calculate natural frequency correctly to check if structure is flexible or vortex-induced vibration is occurred. However, formula of frequency in domestic and foreign spatial structure has not been performed deeply. In this study, approximated formula obtained by eigenvalue analysis of seven domestic spatial structure is compared with two suggestions based on Japanese standard and formula by measurement of 28 spatial structure in Japan. Natural frequency of roof has a tendency to be reduced as the span of structure increases. Natural frequency of domestic structure is generally less than that of analysis and measurement of spatial structure in Japan. Therefore, it is confirm that roof of domestic spatial structure is relatively rather flexible than that of Japan.

• Journal of Korean Association for Spatial Structures
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• v.4 no.2 s.12
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• pp.26-30
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• 2004

• Computational Structural Engineering
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• v.13 no.3
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• pp.61-68
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• 2000

• Computational Structural Engineering
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• v.24 no.2
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• pp.23-29
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• 2011

• Journal of Korean Association for Spatial Structures
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• v.2 no.2 s.4
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• pp.16-20
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• 2002