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Linear vertical vibrations of suspension bridges

version 1.5.1 (211 KB) by E. Cheynet
The eigen-frequencies and mode-shapes for the vertical DOF of a suspension bridge are computed


Updated 14 May 2020

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The vertical eigenfrequencies and mode shapes of a single-span suspension bridge are computed using the method by Luco et Turmo [1]. For the sake of completeness, the computed modal parameters are compared with those obtained using the method by Sigbjørnsson & Hjorth-Hansen [2] and Strømmen [3].

The submission contains:

eigenBridge.m (it is identical to File ID: #51815) and is inspired from [5,6]
eigenridge2.m based on works of [4]. I am simply writing the equations and their solutions in a numerical way.
eigBridge_Verification.m: its only purpose is to verify the numerical implementation of eigenBridge2.m
Verifications.mlx : It is a verification of the works of [4], where I try to obtain exactly what [4] show in their paper.
Application.mlx: I compare eigenBridge.m with eigenBridge2.m


[1] Luco, J. E., & Turmo, J. (2010). Linear vertical vibrations of suspension bridges: A review of continuum models and some new results. Soil Dynamics and Earthquake Engineering, 30(9), 769-781.

[5] Sigbjørnsson, R., Hjorth-Hansen, E.: Along wind response of suspension bridges with special reference to stiffening by horizontal cables. Engineering Structures 3, 27–37 (1981)

[6] Structural Dynamics, Einar N Strømmen, Springer International Publishing, 2013. ISBN: 3319018019, 783319018010

Cite As

E. Cheynet (2020). Linear vertical vibrations of suspension bridges (, GitHub. Retrieved .

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See release notes for this release on GitHub:


Examples have been updated


Fixed some typos


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title updated

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MATLAB Release Compatibility
Created with R2018b
Compatible with any release
Platform Compatibility
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