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Testing of Wood-Concrete and Steel-Concrete Composite Elements

The paper presents the results of experimental tests with numerical comparison of some typical composite elements. Two different kinds of elements were tested: composite steel-concrete andcomposite wood-concrete elements (Fig. 1) [2]. Deflections at mid-span of simply supported beams under monotonously increasing static load were measured (Fig. 2). The influence of different types of composite joints on the results was analysed. Fig. 1 Some girders prepared for testing Fig. 2 Comparasion of experimental and calculated mid-span deflection for the wood-concrete element In numerical tests, the main structure was modeled with two-dimensional plane elements [1]. The composite surface was modeled with two-dimensional interface elements for the continuous connection simulation and modified beam elements for the discrete connection simulation. The applied material models include the most important nonlinear effects of concrete, steel and wood behavior, as well as nonlinear behavior of the composite at the connection surface. The numerical results of developed numerical model were compared with the experimental test results.

composite steel-concrete structure; composite wood-concrete structure; composite connection simulation; experimental tests

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