کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
268309 | 504430 | 2009 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Rigid body moment–rotation mechanism for reinforced concrete beam hinges Rigid body moment–rotation mechanism for reinforced concrete beam hinges](/preview/png/268309.png)
Structural engineers have long recognised the importance of the ductility of reinforced concrete members in design, that is the ability of the reinforced concrete member to rotate and consequently: redistribute moments; give prior warning of failure; absorb seismic, blast and impact loads; and control column drift. However, quantifying the rotational behaviour through structural mechanics has been found over a lengthy period of time to be a very complex problem so that empirical solutions have been developed which for a safe design are limited by the bounds of the test parameters from which they were derived. In this paper, a rigid body moment–rotation mechanism is postulated that is based on established shear-friction and partial-interaction research; it is shown to give reasonable correlation with test results as well as incorporating and quantifying the three major limits to rotation of concrete crushing and reinforcing bar fracture and debonding.
Journal: Engineering Structures - Volume 31, Issue 5, May 2009, Pages 1032–1041