Development of Deflection Capacity Enhancement Factor
Authors: Kachalla M, Izian AK, Abba MA
The deflection requirement check plays a key role in the reinforced concrete (RC) slab design. Computing serviceability failure probability of RC structural unit poses many difficulties, and available literature finding according to Eurocode standard reveals inconsistency in safety level values especially with the use of different load configurations. However, such information is lacking with respect to the safety performance under the simplified span-depth (alternate) consideration for deflection check. Hence, the need for probabilistic framework for the alternate deflection requirement check is necessary. Therefore, this paper presents the drawback mitigation through the development of deflection performance enhancement that employs a rational scheme while maintaining an acceptable closed form solution. This study adopts a numerical design example, the result on the implemented limit state performance shows improvement upon the probabilistic limit state function for the simplified deflection check method, and this led to a development that will play a vital role in computation of deflection requirement using the simplified method.
Affiliations: Department of Civil and Water Resources Engineering, Faculty of Engineering, University of Maiduguri, PMB 1069, Maiduguri, Nigeria.
Keywords: Eurocode, Deflection, Slab, Reinforced Concrete, Numerical Design
Published date: 2018/12/30