A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Dynamic and Seismic Evaluation of Curved Cable Stay Bridges
Cable-stayed bridges are the highly flexible bridges and it is popular due to its economy for longer spans and good aesthetics. Cable stayed bridges are mainly designed based on the flexural strength of the deck, the compressive strength of the pylons, and the tensile strength of the cable stays. By the combination of these parameters, these bridges show excellent structural performance. Though these bridges show good structural efficiency, they exhibit complex nonlinear characteristics. Implementing longer spans, horizontal curvature and increasing column skewness are some of the recent trends in modern bridge engineering; making the bridge an irregular structure with irregular behaviour under horizontal and vertical loads. The aim of this research is to study the structural performance of cable stay bridges with curvature of θ = 11° and 22° under seismic excitations with the aid of modal and time history analyses and also to compare the performance of curved bridge alignments with that of the straight bridge alignment by comparing several parameters. The modelling is done in AutoCAD and exported to SAP 2000 software to analyze. From this research work, it is noticed that single curve bridge with θ = 11° exhibit similar performance to that of straight bridges. So, providing curvature within that range is highly feasible when required. It was also noted that curved bridges with high values of curvature exhibit dissimilar patterns from that of straight bridges in some cases.
Dynamic and Seismic Evaluation of Curved Cable Stay Bridges
Cable-stayed bridges are the highly flexible bridges and it is popular due to its economy for longer spans and good aesthetics. Cable stayed bridges are mainly designed based on the flexural strength of the deck, the compressive strength of the pylons, and the tensile strength of the cable stays. By the combination of these parameters, these bridges show excellent structural performance. Though these bridges show good structural efficiency, they exhibit complex nonlinear characteristics. Implementing longer spans, horizontal curvature and increasing column skewness are some of the recent trends in modern bridge engineering; making the bridge an irregular structure with irregular behaviour under horizontal and vertical loads. The aim of this research is to study the structural performance of cable stay bridges with curvature of θ = 11° and 22° under seismic excitations with the aid of modal and time history analyses and also to compare the performance of curved bridge alignments with that of the straight bridge alignment by comparing several parameters. The modelling is done in AutoCAD and exported to SAP 2000 software to analyze. From this research work, it is noticed that single curve bridge with θ = 11° exhibit similar performance to that of straight bridges. So, providing curvature within that range is highly feasible when required. It was also noted that curved bridges with high values of curvature exhibit dissimilar patterns from that of straight bridges in some cases.
Dynamic and Seismic Evaluation of Curved Cable Stay Bridges
Lecture Notes in Civil Engineering
Marano, Giuseppe Carlo (editor) / Ray Chaudhuri, Samit (editor) / Unni Kartha, G. (editor) / Kavitha, P. E. (editor) / Prasad, Reshma (editor) / Achison, Rinu J. (editor) / Sudhakar, Gautham (author) / Prasad, Reshma (author)
International Conference on Structural Engineering and Construction Management ; 2021
2021-09-04
13 pages
Article/Chapter (Book)
Electronic Resource
English
Dynamic and Seismic Evaluation of Curved Cable Stay Bridges
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