Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Steel and Composite Structures Volume 7, Number 3, June 2007 , pages 219-240 DOI: https://doi.org/10.12989/scs.2007.7.3.219 |
|
|
|
An analytical-numerical procedure for cracking and time-dependent effects in continuous composite beams under service load |
||
Sandeep Chaudhary, Umesh Pendharkar and A.K. Nagpal
|
||
| Abstract | ||
| An analytical-numerical procedure has been presented in this paper to take into account the non-linear effects of concrete cracking and time-dependent effects of creep and shrinkage in the concrete portion of the continuous composite beams under service load. The procedure is analytical at the element level and numerical at the structural level. The cracked span length beam element consisting of uncracked zone in middle and cracked zones near the ends has been proposed to reduce the computational effort. The progressive nature of cracking of concrete has been taken into account by division of the time into a number of time intervals. Closed form expressions for stiffness matrix, load vector, crack lengths and mid-span deflection of the beam element have been presented in order to reduce the computational effort and book-keeping. The procedure has been validated by comparison with the experimental and analytical results reported elsewhere and with FEM. The procedure can be readily extended for the analysis of composite building frames where saving in computational effort would be very considerable. | ||
| Key Words | ||
| creep; shrinkage; cracking; composite beam; closed form expressions | ||
| Address | ||
| Department of Civil Engineering, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India | ||