000004725 001__ 4725
000004725 005__ 20141119144548.0
000004725 04107 $$aeng
000004725 046__ $$k2002-06-02
000004725 100__ $$aCharkas, Hasan
000004725 24500 $$aSIMPLIFIED LOAD-DEFLECTION CALCULATIONS OF FRP STRENGTHENED RC BEAMS BASED ON A RIGOROUS APPROACH

000004725 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004725 260__ $$bColumbia University in the City of New York
000004725 506__ $$arestricted
000004725 520__ $$2eng$$aThe external FRP flexural and shear strengthening of RC beams is a well-established practice for structural rehabilitation and upgrade. For establishing a deflection calculation procedure, some investigators have proposed empirical modifications to the current ACI equation. Others used numerical analysis to generate such deflection computations. Alternatively, the present work develops an analytical solution for the same calculation at any load stage. The solution assumes a trilinear moment-curvature response. This model incorporates some tension stiffening effects and assumes the section to be fully cracked only upon or near steel yielding. A closed form equation is presented for the case of four-point bending as well as uniform loading. Comparisons with experiments indicate the effectiveness of the procedure for properly anchored plates. An extensive parametric study is conducted to reveal a single linear relationship between the cracked moment of inertia of the section (Icr) and the overall effective beam moment of inertia at yielding (Iey) for a wide range of geometric and material parameters. A similar relationship holds between the moment of inertia of the section at the ultimate moment (In) and the corresponding effective value for the entire beam (Ien). This greatly simplifies the deflection calculation as illustrated by comparisons with the rigorous analytical approach and the experimental results.

000004725 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004725 653__ $$aDeflection, Strengthening, FRP, Concrete Beams, Design.

000004725 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004725 720__ $$aCharkas, Hasan$$iRasheed, Hayder A.$$iMelhem, Hani
000004725 8560_ $$ffischerc@itam.cas.cz
000004725 8564_ $$s102305$$uhttp://invenio.itam.cas.cz/record/4725/files/233.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004725 962__ $$r4594
000004725 980__ $$aPAPER