The curved profile gives reduction in stress level and also deflection compared to straight tendon profile. The work discusses about the modelling and analysis pattern of prestressed concrete bridges for different tendon profiles in MIDAS CIVIL software. The superstructure is analyzed for un-factored Gravity loads and Moving vehicular loads as per IRC: 6-2014 and as per IRC: 18-2000. The supports of the main girders are pinned. The deck slab is discretized into a grid of line elements. The Superstructure is usually a grid consisting of main girders, transverse diaphragms and deck slab. Conventionally in Bridge analysis, the Superstructure and Substructure are analyzed separately. Prestressed concrete is used for long span bridges above span length of 10m. Prestressed member, which are free from tensile stress under working loads, the cross section is more efficiently utilized than reinforced concrete section. When the span is high reinforced concrete construction is uneconomical due to increase in depth of span. Normally the type of construction used is reinforced concrete construction, steel construction or steel composite construction. Bridges are the key elements in any road network and use of pre-stress girder type bridges gaining popularity in bridge engineering fraternity because of its better stability, serviceability, economy, durability, aesthetic appearance and structural efficiency. ducted a pull-out test of the prestressing tendon to examine the load-bearing. Bridge construction today has achieved a worldwide level of importance. a Department of Civil and Environmental Engineering, Yamaguchi University.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |