test data

In order to enhance the flexural performance of steel-concrete composite beams and alleviate the river sand depletion problem caused by the application of concrete structures, this paper proposes a novel steel-molybdenum tailings concrete composite beam.Subsequently, the monotonic loading test is performed on three 1:2 scale models of this composite beam to further analyze the failure process, failure mode, ultimate load bearing capacity, and deformation as well as the local strains at some typical measured points. The molybdenum tailing replacement rate is also under consideration. And finally, a series of numerical simulation analyses are conducted to examine the influence of beam section depth, steel plate thickness, and transverse reinforcement ratio on the ultimate load bearing capacity of the steel and concrete composite beam. Experimental results show that the novel steel-molybdenum tailings concrete composite flat beams with different molybdenum tailings concrete contents (0%, 50%, and 100%) exhibit similar mechanical properties, specifically manifested as: the load-deflection curves all contain four stages, namely, elasticity, cracking, yielding, and ultimate; the final failure modes of all specimens are similar, all being typical flexural failures; the section strains all conform to the plane-section assumption; the flexural bearing capacity and mid-span deflection of steel-concrete composite beams exhibit a linear decreasing and increasing trend with the increase of molybdenum tailings content, respectively, reaching the limit at 100% molybdenum tailings content, with the reduction of flexural bearing capacity and the increase of mid-span deflection by 9.03% and 16.39%, respectively. Finite element results show: The ultimate load bearing capacity varies noticeably with concrete beam section depth, steel plate thickness; whereas it has little relation with the transverse reinforcement ratio.