Artikelbeschreibung
To shorten the duration and cost of construction, identifying the number of floors supported by scaffolds is necessary to construct a multi-story building with the floors of long-span open-web sandwich slab. This study proposes a favorable method of two-stage construction support floors, the stages I and II, by establishing their finite element models that consider the effect of the horizontal tube constraining the upright tube in scaffolds. In addition, comparison of the two modeling results with field-measured data shows that for an open-web sandwich floor slab whose span is ¿24.00m, only the full-hall supports of the floor can be retained if its lower floor is the basement roof; otherwise, the full-hall supports should be retained both on this floor and its lower one. When the span of the floor slab is 39.00m and if the span of the lower two floors slab is ¿24.00m, reaching the concrete design strength, then the full-hall supports should be retained on this floor and the lower floor, and partial re-supports should be applied to the second lower floor.
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