Cost estimation, optimization and competitiveness of different composite floor systems

Uroš Klanšek (Author), Stojan Kravanja (Author)

Abstract

Part 2 presents the cost optimization, comparison and competitiveness between three different composite floor systems: composite beams produced from duo-symmetrical welded I sections, composite trusses formed from rolled channel sections and composite trusses made from cold formed hollow sections. In order to carry out a precise comparison between the mentioned composite systems, we applied the structural optimization method rather than classical structural analysis. The optimization was performed by the non-linear programming approach, NLP. The parametric optimization was made for simply supported beams of different spans, loads, steel costs (prices) and different hourly labour costs. An accurate cost objective function of the self-manufacturing material, power and labour costs, described in Part 1, we redefined for the optimization and subjected to the design, stress and deflection (in)equality constraints in order to satisfy the requirements of both the ultimate and the serviceability limit state. The composite structures were designed in accordance with Eurocode 4. The aim of the comparison was to define the spans and loads, at which each of the presented composite structures shows its advantages. Comparative diagrams, displayed at the end of the paper, can be usefully applied for choosing the optimal type of structure.

Keywords

composite I beams;composite trusses;structural optimization;parametric optimization;nonlinear programming;NLP;self-manufacturing costs;competitiveness;

Data

Language:	English
Year of publishing:	2006
Typology:	1.01 - Original Scientific Article
Organization:	UM FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
UDC:	624.074:519.61/.64
COBISS:	9830678
ISSN:	0143-974X
Views:	1144
Downloads:	43
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Cost estimation, optimization and competitiveness of different composite floor systems-Part 2: Optimization based competitiveness between the composite I beams, channel-section and hollow-section trusses
Secondary keywords:	composite I beams;composite trusses;structural optimization;parametric optimization;nonlinear programming;NLP;self-manufacturing costs;competitiveness;
URN:	URN:SI:UM:
Pages:	str. 449-462
Volume:	ǂVol. ǂ62
Issue:	ǂiss. ǂ5
Chronology:	May 2006
ID:	8717296