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Structural Engineering and Mechanics Volume 10, Number 3, September 2000 , pages 227-243 DOI: https://doi.org/10.12989/sem.2000.10.3.227 |
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Retrofitting reinforced concrete beams by bolting steel plates to their sides. Part 2. Transverse interaction and rigid plastic design |
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Oehlers DJ, Ahmed M, Nguyent NT, Bradford MA
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| Abstract | ||
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In a companion paper, tests on bolted side plated beams have shown that side plates can substantially increase the strength of existing reinforced concrete beams with little if any loss of ductility and, furthermore, induce a gradual mode of failure after commencement of concrete crushing. However, it was also shown that transverse interaction between the side plates and the reinforced concrete beam, that is vertical slip and which is a concept unique to side plated beams, is detrimental. Transverse interaction increases the forces on the bolt shear connectors and, hence, weakens the beam. It also reduces the ability of the composite plated beam to yield and, hence, to attain its full flexural capacity. The generic concept of transverse interaction will be described in this paper and the results used to develop a new form of rigid plastic analysis for bolted side plated beams which is illustrated with an application. | ||
| Key Words | ||
| retrofitting, rehabilitation, composite, reinforced concrete, plated beams, transverse interaction | ||
| Address | ||
| Oehlers DJ, Univ Adelaide, Dept Civil & Environm Engn, Adelaide, SA 5005, Australia Univ Adelaide, Dept Civil & Environm Engn, Adelaide, SA 5005, Australia Univ New S Wales, Dept Struct Engn, Sydney, NSW 2052, Australia | ||