Design of timber footbridge across river Sava Bohinjka near Bohinjska Bistrica

摘要

In this thesis the design of timber footbridge across river Sava Bohinjka near Bohinjska Bistrica is presented. In the introduction the historical description of the development of the timber bridges is done, followed by description of the footbridge and its location. Afterwards, materials used on the construction and their material properties are presented. Action on footbridge and their combinations are written in accordance with Eurocod standards. An optimization of the ratio of spans is made to unify bending moments across main beams. Statical and modal analysis is made with computer program Tower 6 to get internal forces of construction, which are used to design sections of main constructional elements and joints between them.udThe construction contains of two parallel glued laminated timber beams which are straight at endings and curved with radius 180 m in the middle. Glued laminated timber beams are made from timber GL28h and are connected with cross-beams made from D60 quality timber. On the top of crossbeams, secondary longitudinal beams made from glued laminated Gl28h timber are laid. Secondary crossbeams made from D60 quality timber are laid on secondary longitudinal beams. Horizontal stiffness is provided with steel truss located between the crossbeams. All constructional elements are connected with steel plates and different fasteners.