Explaining the riddle of effective moment of inertia models for FRP concrete beams Online publication date: Tue, 30-Sep-2014
by Salah Khalfallah
International Journal of Structural Engineering (IJSTRUCTE), Vol. 2, No. 1, 2011
Abstract: The current provisions in ACI Committee 440 for calculating deflections of flexural structures reinforced with fibre reinforced polymer (FRP) bars or reinforcements require the use of an effective moment of inertia. Many equations giving its expression have been developed over the past years and show significant difference between them among the CEB-FIP and Benmokrane formula, largely used in literature are selected. The discrepancy of response curves shows that the variation between them can be explained by the bond character and tension stiffening effect. The comparison between responses of various FRP reinforced concrete (RC) beams shows a relative accuracy via the experimental data. For this object, an analytical expression is proposed to quantify the effective moment of inertia and accurately results are shown. Obtained results show a favourite accuracy using the novel expression of the effective moment of inertia model of an in-service FRP bars RC beam subjected to a monotonic loading.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Structural Engineering (IJSTRUCTE):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com