Experimental and numerical analysis of flexural composite beams with partial use of high strength/high performance concrete

The paper summarises the experimental and numerical analysis of flexural capacity and deformability of structural concrete beams prepared as composite members consisting of two concrete layers made of reinforced normal concrete and highâ€performance concrete (HPC). The reinforced concrete compos...

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Bibliographic Details
Main Authors: Andrzej Lapko, Barbara Sadowskaâ€Buraczewska, Andrzej Tomaszewicz
Format: Article
Language:English
Published: Vilnius Gediminas Technical University 2005-06-01
Series:Journal of Civil Engineering and Management
Subjects:
Online Access:http://localhost/journals.vgtu.lt/index.php/JCEM/article/view/8900
Description
Summary:The paper summarises the experimental and numerical analysis of flexural capacity and deformability of structural concrete beams prepared as composite members consisting of two concrete layers made of reinforced normal concrete and highâ€performance concrete (HPC). The reinforced concrete composite beams used in the tests were prepared in full scale with the crossâ€section of 120 × 200 mm and the effective span of 2950 mm. The basic samples were composed in two layers consisting of highâ€performance concrete as the top layer, and normal strength concrete. The results of the analyses confirm a significant improvement of structural properties of composite beams in comparison to the beams prepared totally of normal concrete, and in some cases also in comparison with the beam totally made of HPC. Stipriojo labai funkcionalaus betono lanksÄių kompozitinių sijų eksperimentinis ir teorinis tyrimas Santrauka Pateikiami iÅ¡ normalaus stiprio bei labai funkcionalių betonų pagamintų kompozitinių sijų eksperimentinÄ—s bei teorinÄ—s analizÄ—s rezultatai. Bandymai buvo atlikti su 120 x 200 mm skerspjÅ«vio ir 2 950 mm tarpatramio gelžbetoninÄ—mis kompozitinÄ—mis sijomis. Pagrindiniai bandiniai buvo pagaminti iÅ¡ dviejų sluoksnių: iÅ¡ labai funkcionalaus betono (virÅ¡utinÄ—je skerspjÅ«vio dalyje) bei normalaus stiprio betono. AnalizÄ—s rezultatai parodÄ— kompozitinių sijų ir sijų, pagamintų vien tik iÅ¡ normalaus stiprio betono, esminius savybių bei elgsenos skirtumus. Palyginti rezultatai, gauti iÅ¡bandant sijas, pagamintas vien tik iÅ¡ labai funkcionalaus betono. Raktiniai žodžiai: kompozitinÄ— sija, labai funkcionalus betonas, laikomoji galia, deformavimas, natÅ«ralaus dydžio sijos bandymai. First Published Online: 14 Oct 2010
ISSN:1392-3730
1822-3605