Imperial College London
Alternate

Professor M Ahmer Wadee

Faculty of Engineering, Department of Civil and Environmental Engineering

Professor of Nonlinear Mechanics
 
 
 
//

Contact

 

+44 (0)20 7594 6050a.wadee Website

 
 
//

Assistant

 

Ms Ruth Bello +44 (0)20 7594 6040

 
//

Location

 

421Skempton BuildingSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Hadjipantelis:2019:10.1061/(ASCE)ST.1943-541X.0002375,
author = {Hadjipantelis, N and Gardner, L and Wadee, MA},
doi = {10.1061/(ASCE)ST.1943-541X.0002375},
journal = {Journal of Structural Engineering},
pages = {04019100--1--04019100--19},
title = {Finite element modeling of prestressed cold-formed steel beams},
url = {http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0002375},
volume = {145},
year = {2019}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The concept and structural benefits of prestressing cold-formed steel beams are explored in the present paper. In the proposed system, prestressing is applied by means of a high-strength steel cable located within the cross section of the beam at an eccentric location with respect to the strong geometric axis. The internal forces generated by the prestressing are opposite in sign to those induced under subsequent vertical loading. Hence, the development of detrimental compressive stresses within the top region of the cold-formed steel beam is delayed and thus the load-carrying capacity of the beam is enhanced. Owing to the precamber that is induced along the member during the prestressing stage, the overall deflections of the beam are also reduced significantly. In the present paper, finite-element (FE) modeling was employed to simulate the mechanical behavior of prestressed cold-formed steel beams during the prestressing and vertical loading stages. Following the validation of the FE modeling approach, a set of parametric studies was conducted, where the influence of the key controlling parameters on the structural benefits obtained from the prestressing process was investigated. The parametric results were utilized to determine how the benefits obtained from the addition of the prestressed cable can be maximized, demonstrating the significant enhancements in the performance of the cold-formed steel beam that can be achieved.
AU  - Hadjipantelis,N
AU  - Gardner,L
AU  - Wadee,MA
DO  - 10.1061/(ASCE)ST.1943-541X.0002375
EP  - 1
PY  - 2019///
SN  - 0733-9445
SP  - 04019100
TI  - Finite element modeling of prestressed cold-formed steel beams
T2  - Journal of Structural Engineering
UR  - http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0002375
UR  - http://hdl.handle.net/10044/1/67145
VL  - 145
ER  -
Download