Integrated Analytical and Experimental Research to Develop a New Seismic Design Methodology for Precast Concrete Diaphragms

• Published in: Journal of structural engineering (New York, N.Y.) Vol. 139; no. 7; pp. 1192 - 1204
• Main Authors: Fleischman, R. B, Restrepo, J. I, Naito, C. J, Sause, R, Zhang, D, Schoettler, M
• Format: Journal Article
• Language: English
• Published: American Society of Civil Engineers 01-07-2013
• Subjects: Design engineering; Diaphragms; Mathematical analysis; Mathematical models; Precast concrete; Reinforced concrete; Research projects; Seismic design; Technical Papers
• ISSN: 0733-9445; 1943-541X
• DOI: 10.1061/(ASCE)ST.1943-541X.0000734

AbstractA new seismic diaphragm design methodology has been developed for precast concrete floor diaphragms. The knowledge required to create the design methodology was obtained through an integrated analytical and experimental research project using two Network for Earthquake Engineering Simulation (NEES) equipment sites. The activities of the project involved a sequence of integrated research tasks that systematically developed knowledge about diaphragm behavior from the reinforcement detail level to the structural system level. These tasks included the use of state-of-the-art experimental techniques made possible through the NEES facilities including hybrid simulation and large-scale shake table tests. Such techniques were crucial to the research as the complex behavior of precast diaphragms is not well described by simple analytical models or idealized experiments. Valuable industry oversight in the planning, execution, and technology transfer stages of the project guided the research activities, including a design framework established at the outset of the project. This paper describes the research project approach, activities, and outcomes.