Investigation of dynamic cable–deck interaction in a physical model of a cable‐stayed bridge. Part I: modal analysis

Caetano, E.; Cunha, A.; Taylor, C. A.

doi:10.1002/(sici)1096-9845(200004)29:4<481::aid-eqe918>3.3.co;2-t

Cited by 9 publications

(11 citation statements)

References 6 publications

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“…A common practice in numerically modeling a cable is to use a single truss element with equivalent Young modulus. However, such definition implies the ignorance of the lateral cable vibration . In general, when the structure is under dead load only and the cable‐bridge interaction can be ignored, truss element can be safely used to model the cables.…”

Section: Numerical Simulation Of the Tied‐arch Bridgementioning

confidence: 99%

Localization of damaged cable in a tied‐arch bridge using Arias intensity of seismic acceleration response

Kordestani

Xiang

et al. 2019

Struct Control Health Monit

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It is well-known that a bridge may end up with severe damage under aftershocks, even if it resisted the main shock. As such, a quick assessment seems necessary when a bridge experiences an earthquake event. In this paper, an output-only energy-based method was developed to locate damaged cables in an tied-arch bridge under seismic excitation. For this purpose, seismic acceleration response signals were first subjected to simple band-pass filtering. Then, the energy levels, in terms of Arias intensity, were calculated and normalized to locate the damaged cables. The proposed method was validated through a realistic 3-D numerical model of a tied-arch bridge under 16 different ground motions. It was shown that the proposed method can accurately detect the damaged cables under the earthquakes. Moreover, the damage detection procedure is proved to be insensitive to noise and adequately robust against near-and far-field parameters of the earthquake. KEYWORDSseismic acceleration response, Arias intensity, band-pass filtering, detection of damaged cable, output-only method, tied-arch bridge Struct Control Health Monit. 2020;27:e2491.wileyonlinelibrary.com/journal/stc

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Section: Numerical Simulation Of the Tied‐arch Bridgementioning

confidence: 99%

Localization of damaged cable in a tied‐arch bridge using Arias intensity of seismic acceleration response

Kordestani

Xiang

et al. 2019

Struct Control Health Monit

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“…The mass of each spine node is equally arranged at its anchorage points, so that the longitudinal rotational inertia of the deck can be considered in the model [25]. Several methods have been proposed to model the stay cables, such as the single truss model (one element cable system-OECS) [26] and multi-element cable system (MECS) [25,[27][28][29]. The OECS model does not account for the local cable transversal motion, and fails to describe its interaction with the global dynamics.…”

Section: Finite Element Modelmentioning

confidence: 99%

Seismic Responses of a Cable-Stayed Bridge with Consideration of Uniform Temperature Load

et al. 2016

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Abstract:The effects of temperature load on the dynamic responses of cable-stayed bridges have attracted the attention of researchers in recent years. However, these investigations mainly focus on the influence of temperature on the dynamic characteristics of structures, such as vibration mode and frequency. This paper discusses the effects of uniform temperature changes on the seismic responses of a cable-stayed bridge. A three dimensional finite element model of a cable-stayed bridge using OpenSees is established for nonlinear time history analysis, and uniform temperature load is applied to the prototype bridge before the conducting of seismic excitation. Three ground motion records are selected from the PEER strong motion database based on the design spectrum. Case studies are then performed considering the varying temperature and the connections between the deck and pylons of the bridge. The result shows that the seismic responses of the bridge are significantly increased with the consideration of temperature load. Meanwhile, the types between the deck and pylon also have notable impacts on the seismic responses of the bridge with and without temperature changes. This research could provide a reference for designers during the design phase of cable-stayed brides.

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“…It can be observed that these graphics exhibit not only the peaks that are associated with the global modes of the deck but also peaks that represent local modes of the stay cables or combined modes of the deck and stay cables (Caetano et al, 2000a(Caetano et al, , 2000b. This fact originates an increased difficulty in the identification of global modes whenever the corresponding natural frequency is close to a cable harmonic.…”

Section: Ambient Vibration Testsmentioning

confidence: 99%

The Viana footbridge: construction and dynamic monitoring

Barbosa¹,

Magalhães²,

Caetano³

et al. 2013

Proceedings of the Institution of Civil Engineers - Bridge Engi

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A new moveable footbridge was recently built at the entrance of Marina Atlâ ntico in the city of Viana do Castelo, Portugal. This paper presents a brief description of the global solution, with a special focus on the characterisation of the construction methods adopted. Particular consideration is given to the construction of the pivot pylon and the steel structure, showing how all the bridge components work together to ensure a safe working relationship with the marina, the river and users of the continuous bicycling and pedestrian pathway running across the closed bridge. The mechanical, hydraulic, electrical and navigational light systems play fundamental roles, especially during bridge opening and closing operations. Moreover, as this light footbridge is susceptible to vibrations due to human traffic, the paper also describes the dynamic tests performed during and after construction, including two ambient vibration tests, the measurement of cable-stay forces, and tests with groups of pedestrians used to evaluate induced vibration levels along with the monitoring of bridge accelerations over 4 months of use.

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Investigation of dynamic cable–deck interaction in a physical model of a cable‐stayed bridge. Part I: modal analysis

Cited by 9 publications

References 6 publications

Localization of damaged cable in a tied‐arch bridge using Arias intensity of seismic acceleration response

Localization of damaged cable in a tied‐arch bridge using Arias intensity of seismic acceleration response

Seismic Responses of a Cable-Stayed Bridge with Consideration of Uniform Temperature Load

The Viana footbridge: construction and dynamic monitoring

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