Partial Composite Action in Diaphragms

by Rafik Y. Itani, (A.M.ASCE), Asst. Prof.; Dept. of Civ. and Environmental Engrg., Washington State Univ., Pullman, Wash.,
Girish S. Hiremath, Struct. Engr.; Austin Co., Renton, Wash.,

Serial Information: Journal of the Engineering Mechanics Division, 1980, Vol. 106, Issue 4, Pg. 739-752

Document Type: Journal Paper


Diaphragms are common and economical structural systems which resist in-plane forces produced by wind and earthquake. The analysis of such a system is highly indeterminate and complex. This paper develops a method for the analysis of partial composite action in layered diaphragms. The method extends the theory development by Newmark, et al. and utilizes a finite difference approach in the solution. Results of analysis include strains, stresses, deflections, and interlayer slip. The method developed here is compared to available test data, and sample results are presented.

Subject Headings: Composite materials | Diaphragms (structural) | Stress analysis | Economic factors | Wind forces | Earthquakes | Layered systems | Stress strain relations | Alabama | United States

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