Punching behaviour of RC flat slabs under reversed horizontal cyclic loading
| Autor: | André Almeida, António Manuel Pinho Ramos, Valter José da Guia Lúcio, Micael M.G. Inácio |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Horizontal and vertical business.industry Shear force 0211 other engineering and technologies Vertical load 020101 civil engineering 02 engineering and technology Structural engineering Dissipation 0201 civil engineering 021105 building & construction Slab Bending moment Cyclic loading Composite material business Punching Civil and Structural Engineering |
| Zdroj: | Engineering Structures. 117:204-219 |
| ISSN: | 0141-0296 |
| DOI: | 10.1016/j.engstruct.2016.03.007 |
| Popis: | The aim of this work is to study the behaviour of reinforced concrete flat slab structures under combined vertical and horizontal cyclic loading. A total of five specimens were cast and tested: a control specimen was punched without eccentricity, one specimen was tested under constant vertical loading and monotonically increased eccentricity until failure and the remaining three were tested under constant vertical load, at different shear ratios, and cyclic horizontal loading with increasing horizontal drift ratios. All slabs were similar, measuring 4.25 × 1.85 × 0.15 m 3 . The reinforced concrete slab specimens were connected to two steel half columns by 0.25 × 0.25 m 2 rigid steel plates, prestressed against the slab using steel bolts, to ensure monolithic behaviour. The cyclic tests were performed using an innovative test setup that allows bending moment redistribution, line of inflection mobility, assures equal vertical displacements at the North-South borders and symmetrical shear forces. Results show that cyclic horizontal actions are very harmful to the slab–column connection, resulting in low horizontal drifts and energy dissipation. |
| Databáze: | OpenAIRE |
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