Structural Design of Composite Concrete-Steel Beams with Spatial Truss Reinforcement Elements
Author(s):
Abstract:
This paper deals with an atypical class of reinforced concrete beams, whose reinforcementis a steel truss structures. This typology of beams is quite unknown within the engineeringcommunity. Moreover they have been used for three decades in Italy, principally forindustrial or special structures. Differently from traditional reinforced concrete beams, thesteel trusses can bear their own weight and the weight of slabs and fluid concrete withoutany provisional support during a first «dry» assembly stage; after that, when concrete develop its own mechanical characteristics, they can collaborate with the cast in place concrete. Nowadays, interest for this technology is growing up in Italy, mainly because of some advantages it provides with respect to the traditional reinforced concrete beams. Nonetheless, neither in the current Italian nor in the European codes there are specificregulation for this class of reinforced beams. In order to achieve this goal, the main aim ofthis work is to illustrate possible mechanical models and verification principles to be used indesigning these particular reinforced concrete beams when subject to static loads. Finally some practical design examples, done by using a specifically developed computercode, are presented to illustrate complete design procedures.
Language:
English
Published:
Asian journal of civil engineering, Volume:12 Issue: 2, Apr 2011
Page:
155
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