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자료유형
학술대회자료
저자정보
Park, Ki-Dong (Daewoo Institute of Construction Technology) Kim, Dae-Young (Daewoo Institute of Construction Technology) Joung, Dae-Ki (Daewoo Institute of Construction Technology)
저널정보
한국공간구조학회 한국공간구조학회 춘계학술발표논문집 한국공간구조학회 2008년도 춘계 학술발표회 논문집
발행연도
2008.1
수록면
61 - 65 (5page)

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A 4-story reinforced concrete structure built above an underground parking garage shows some slab deflections, and the deflections of the concrete floor slabs are proposed to be alleviated by the application of light-weight topping material in conjunction with localized strengthening of the slabs. The application of light-weight concrete topping on the existing slab has been simulated and its performance to anticipated loads has been analyzed. The application of light-weight topping material imposes additional weight on the exiting floor slabs. This added weight on the existing slabs causes over-stressing of the slabs. This over-stressing can be alleviated by enhancing the load carrying capacity of the existing slabs. Additional load carrying capacity in the existing slabs can be developed by localized strengthening of the slabs utilizing techniques such as the application of fiber-reinforced composites on the bottom surface of the slabs, and application of fiber-reinforced composites adequately complements the capacity of the existing slabs to bear the additional load imposed by light-weight leveling material. Additional moments in the beam and columns induced by the application of the light-weight topping material were tabulated and compared with capacity. The moment D/C ratios of the beam and columns are well the range of acceptable limits, and the beam and columns are not overstressed by the application of the surcharge.

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