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Effect of pylon tower spread on modal time period of cable-stayed suspension hybrid bridge

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  • Jaswant Gabra
  • Atul Desai

Abstract

Cable-stayed bridge concept of longer spans shows a distinct advantage of an effective reduction in deflection of pylon in case of an earthquake when compared to traditional cable-stayed bridges. There is the feasibility of improving the seismic performance of the deck due to seismic action, during strong earthquake vibrations if spread pylons are used. In this paper, the dynamic behaviour of cable stayed suspension hybrid bridge (CSSHB) with pylon tower spread, i.e., lateral and longitudinal with seismic loading is studied. SAP2000 software is used for the modelling of structures. The study contains the response of the bridge designed towards change in the spread of the pylon under consideration of soil structure interaction. Modelling for soil is done using the spring and dashpots, i.e., Kelvin element. It is concluded from the results that the effects spread of pylon legs had a substantial impact on CSSHB.

Suggested Citation

  • Jaswant Gabra & Atul Desai, 2024. "Effect of pylon tower spread on modal time period of cable-stayed suspension hybrid bridge," International Journal of Critical Infrastructures, Inderscience Enterprises Ltd, vol. 20(6), pages 491-504.
    • Handle: RePEc:ids:ijcist:v:20:y:2024:i:6:p:491-504
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