Lateral Load Stiffness of Slab-Column Structures

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Title: Lateral Load Stiffness of Slab-Column Structures

Author(s): A. E. Long and D. W. Kirk

Publication: Special Publication

Volume: 63

Issue:

Appears on pages(s): 197-220

Keywords: building codes; columns (supports) ; concrete slabs; cracking (fracturing); deflection; elastic analysis; flat concrete slabs; frames; lateral pressure; loads (forces); models; reinforced concrete; stiffness; structural analysis; tests.

Date: 8/1/1980

Abstract:
The results of lateral load tests on one third scale slab-column structures with realistic boundary conditions are presented. Measured moments at both internal and edge columns are compared with predictions based on methods in codes and other analytical procedures including finite elements. For all methods of prediction the lateral stiffness of the frameworks is overestimated and in some cases to a substantial extent. The lateral stiffness was also found to be influenced by cracking due to gravity loading.