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Analysis of a Cable Stayed Bridge with Different Arrangement of Cable and Pylon Types

Author(s):

Kartikay Nayak , Sam College of Engineering and Technology, Bhopal; Hitesh Kodwani, Sam College of Engineering and Technology, Bhopal

Keywords:

Structural Analysis, Conventional Design, Hydraulic Design, Cable, Span, Pylons, Arrangements

Abstract

Cable stayed bridges are similar to the suspended bridge i.e. it has towers and a deck that is held by using cables, but its cables keep the deck through connecting it immediately to the towers as a substitute via suspender cables. It normally carries pedestrians, bicycles, cars, vans, and mild rail. It has more than one tower also called pylons, through which cables guide the bridge deck. A one-of-a-kind feature is the cables which run immediately from the tower to the deck, generally forming a fan-like pattern or a chain of parallel strains. That is in evaluation to the modern-day suspension bridge, wherein the cables assisting the deck are suspended vertically from the principle cable, anchored at both ends of the bridge and running between the towers. The cable-stayed bridge is most useful for spans longer than cantilever bridges and shorter than suspension bridges. However it is the range where cantilever bridges would develop heavier if the span has been lengthened; at the same time as suspension bridge cabling might not be more in economical aspect if the span had been shortened. In this study we are analysing a 500 m long cable stayed bridge with different cable or pylon type arrangement using analysis tool staad. In this research work we are analysing the loading conditions as per conventional (manual) method. Here it is concluded that with respect to the shape of tower we noticed that H shape pylon shows low amount of sag and moment in the cables and in the deck because it has more number of joints which are not uniform so that the concentration of stress and tension carrying capacity of the cables was not effectively distributed to the other parts of the cable which may lead to maximum concentration in some cables, when compared to circular which has homogeneous member.

Other Details

Paper ID: IJSRDV7I30199
Published in: Volume : 7, Issue : 3
Publication Date: 01/06/2019
Page(s): 598-601

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