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Title:Optimum design of plane timber trusses considering joint flexibility
Authors:ID Šilih, Simon (Author)
ID Premrov, Miroslav (Author)
ID Kravanja, Stojan (Author)
Files:URL http://dx.doi.org/10.1016/j.engstruct.2004.10.001
 
Language:English
Work type:Unknown
Typology:1.01 - Original Scientific Article
Organization:FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
Abstract:The paper presents the optimization of metal-plate-connected plane timber trusses with special emphasis on joint flexibility. The optimization was performed by the non-linear programming approach. Since various truss design parameters such as type of truss configuration, span/depth ratio, number and type of diagonal and vertical members and type of joint connections simultaneously affect each other, it is proposed that all of these parameters should be considered simultaneously in a single mathematical model. An optimization model for cost optimization of timber trusses was thus developed. The economic objective function for minimizing the structure's self-manufacturing costs was defined, subjected to the design, stress and deflection (in)equality constraints. The finite element equations were as the equality constraints defined for the calculation of the internal forces and the deflections of the structure. The stiffness matrix of the structure was composed by considering fictitiously decreased cross-section areas of all the flexibly connected elements. Constraints for the dimensioning of the timber members were determined in accordance with Eurocode 5 in order to satisfy the requirements of both the ultimate and the serviceability limit states. The cross-section dimensions and the number of fasteners were defined as independent optimization variables. A numerical example demonstrates the applicability of the optimization approach presented as well as the influence of the fasteners' flexibility on the optimal self-manufacturing costs.
Keywords:civil engineering, timber structures, trusses, fasteners, flexibility, optimization, non-linear programming
Year of publishing:2005
PID:20.500.12556/DKUM-27214 New window
UDC:624.074.5.075
ISSN on article:0141-0296
COBISS.SI-ID:9218070 New window
NUK URN:URN:SI:UM:DK:ZIJLZYFU
Publication date in DKUM:01.06.2012
Views:2275
Downloads:126
Metadata:XML DC-XML DC-RDF
Categories:Misc.
:
ŠILIH, Simon, PREMROV, Miroslav and KRAVANJA, Stojan, 2005, Optimum design of plane timber trusses considering joint flexibility. Engineering structures [online]. 2005. [Accessed 13 April 2025]. Retrieved from: http://dx.doi.org/10.1016/j.engstruct.2004.10.001
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Record is a part of a journal

Title:Engineering structures
Shortened title:Eng. struct.
Publisher:Elsevier Science
ISSN:0141-0296
COBISS.SI-ID:7750666 New window

Secondary language

Language:English
Keywords:lesene konstrukcije, paličja, vezna sredstva, fleksibilnost, optimizacija, nelinearno programiranje


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