Analysis of the Behaviour of Composite Steel and Steel Fiber Reinforced Concrete Slabs Kompozitini plienbetonini plok i , armuot plieniniu plau u, savybi tyrimas

There was a pending influence of steel fiber on the strength and stiffness of composite steel–concrete slabs under statical short–time load. Steel profiled sheeting and steel fiber reinforced concrete were used for specimens. Four composite slabs were made. Experimental investigations into the behaviour and influence of steel fiber reinforced concrete in composite slabs were conducted. Transverse, longitudinal, shear deformation and deflection of the slab were measured. The results indicated that the use of steel fiber in composite slabs was effective: strength was 20–24 % higher and the meanings of deflections under the action of the bending moment were 0,6MR (where MR is the bending moment at failure of the slabs) and were 16–18 % lower for slabs with usual concrete. Article in Lithuanian Nagrin jama plieninio plau o taka kompozitini plienbetonini plok i stiprumui ir standumui veikiant statinei trumpalaikei apkrovai. Bandiniams panaudoti kreg d s uodegos“ tipo plieniniai lak tai ir plieniniu plau u armuotas betonas. I viso buvo pagamintos keturios plok t s. Siekiant nustatyti plieninio plau o tak kompozitini plok i stiprumui ir standumui, atliktas eksperimentinis tyrimas. Eksperimentini bandym metu buvo matuojamos skersin s, i ilgin s, lyties deformacijos ir linkiai. Bandym rezultatai parod , kad plieninio plau o naudojimas kompozitin se plok t se yra efektyvus: laikomoji galia yra 20–24 % didesn ir linki reik m s, veikiant 0,6MR ( ia MR lenkimo momentas, kuriam veikiant plok t s suyra) apkrovai, yra 16–18 % ma esn s u plok i su prastu betonu. Straipsnis lietuvi kalba