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| Vol. - No. | Vol.9 - No.2 |
|---|---|
| Date | Jun., 2020 |
| Title | Structural Characteristics of Preloaded Deep Deck Composite Slabs with Tenns |
| Author | Tae-Hun Lee1, Jae-Hwan Kyung2, Jong-Wook Song2, and Sung-Mo Choi3,+ |
| Institutions | 1Master Course, Department of Architectural Engineering, University of Seoul, Republic of Korea2Doctor Course, Department of Architectural Engineering, University of Seoul, Republic of Korea3Professor, Department of Architectural Engineering, University of Seoul, Republic of Korea |
| Abstract | As deep decks are commonly used in construction fields and high-rise building. etc, the slim floor system is increasingly employed. But, the drawback of the slim floor system is that the use of 250 mm deep decks in a structure having a clear span of more than 6 m because of deflection and flexural buckling. This study suggests a non-support construction method where tendons are installed in the deep decks of the slim floor structure to introduce preload in order to control deflection in a structure having a clear span of 9 m. Loading tests were conducted to verify the composite effect and flexural capacity of the preloaded deep deck composite slab and evaluate the serviceability of the supportless construction method. The results showed the complete composite behavior of the preloaded deep deck composite slab with tendons. The specimens satisfied deflection limit and the working load was approximately 25% of the maximum load capacity. It is deemed that the cross-sectional area and yield strength of the deck plate should be taken into account in slab design and the yield strength and diameter of the tendon should be determined with the pre-tension taken into consideration. |
| Keyword | Deep Deck, 250 mm Depth, Composite Slab, Pre-load Tendon |
| PP. | PP.187~195 |
| Paper File |
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