Abstract
In this paper, the properties of solid timber and glulam materials are investigated. An existing steel bridge in Turkey is resized and reanalyzed with the SAP2000 analysis programme using solid timber and glulam. In this way, the potential of timber as an alternative to steel is examined. Solid timber and glulam solutions are realized with EN5 norms used in Europe and NDS norms used in America. Structural analysis results and quantities take-off are compared. As a result of the analysis, it was seen that internal forces and quantities take-off in EN5 solutions were higher than NDS. It is expressed that the reason for this is the resistance factors in EN5 are different and the solution parameters are more general expressions.
Highlights
Various building materials have been used throughout the history in order to form a structural system, and steel and reinforced concrete materials are still widely used today
General topics of studies about solid timber and glued laminated timber can be summarized like potential of timber according to physical and mechanical properties, positive and negative effects on environmental, energy efficiency etc
Doğangün et al [2] examined the earthquake performance of traditional wooden structures. They stated that the performance of timber structures was good in the past earthquakes in Turkey and they underlined that these structures should be encouraged
Summary
Various building materials have been used throughout the history in order to form a structural system, and steel and reinforced concrete materials are still widely used today. Örs and Togay [1], investigated to production, cost and employment condition of timber industries in Turkey They explained that the unit cost of timber buildings is not expensive comparisons between alternative materials and will be cheaper in future with the developments of production techniques. Total consumed energy amounts including production of timber, construction of timber structures and service life will be low levels against to reinforced concrete and steel structures [4]. Crocetti enounce that timber becomes alternative choice for bridge construction in European countries because of developments of engineering wood products like glued laminated timber [8]. Studies about cost comparison between timber, steel and prestressed concrete bridges showed the timber bridges initial costs cheaper than other alternatives, due to timber weight to strength ratio [10]. Glulam girder bridge cost cheaper than prestressed concrete bridge, including of fullscale fatigue and strength tests [11]
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