Effective moment of inertia of partially cracked RC beams

الملخص EN

Effect ive mom enl of inert ia of an RC beam is shown to be function of the service load-l evel.

The beam is subjected to.

th e reinforcem ent ratio in th e beam and the type of loading (uniform or poin t load s) .

Th e well known formulas available for eva lua tion of eff ective mom ent of ine rti a co nside re d the ef fec t of un iformly dist rihut ed load o nly.

Th e test result s show th at th e effective moment of inertia und er point load s is significant ly different fro m that obta ine d from the formulas.

Refin ed mod els are prese nte d her e .

which acco unt for the effects of all the loading types and a re compared with the test results and with other mod els ava ilable for thi s purpose .

Applicability of th e mod els as well as other mod els to beams o f Tvsections is also investig at ed .