Determination of the axial force on stay cables accounting for their bending stiffness and rotational end restraints by free vibration tests

Ceballos, Marcelo A.; Prato, Carlos A.

doi:10.1016/j.jsv.2008.02.048

Cited by 76 publications

(46 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, given that experimental techniques have immensely improved in recent years, it is presently possible to obtain very accurate estimates of cable frequencies for many vibration modes other than the first two. This allows the simultaneous identification of force and some of the uncertain governing parameters, using optimisation criteria and curve fitting techniques ( [12], [13], [16]. On the other hand, considering also the progress in the numerical modelling of complex structures, the combination of numerical models with experimental testing and identification techniques can provide an extremely powerful tool in the estimation of cable force for applications characterised by significant dispersive behaviour( [14], [16]), as will be subsequently illustrated.…”

Section: Identification Of Cable Forcementioning

confidence: 99%

Dynamic testing of cable structures

Caetano

Cunha

2015

MATEC Web of Conferences

View full text Add to dashboard Cite

Abstract. The paper discusses the role of dynamic testing in the study of cable structures. In this context, the identification of cable force based on vibration measurements is discussed. Vibration and damping assessment are then introduced as the focus of dynamic monitoring systems, and particular aspects of the structural behaviour under environmental loads are analysed. Diverse application results are presented to support the discussion centred on cable-stayed bridges, roof structures, a guyed mast and a transmission line.

show abstract

Section: Identification Of Cable Forcementioning

confidence: 99%

Dynamic testing of cable structures

Caetano

Cunha

2015

MATEC Web of Conferences

View full text Add to dashboard Cite

show abstract

“…As measuring instruments must be installed in advance during construction to monitor the tension of a bridge when it is already in use, an initial cost is required, and a maintenance problem may occur. The vibration method, one of the indirect methods, measures the responses from a bridge's cable and calculates the tension using the natural frequency and shape conditions of the cable. Sensors for measuring the responses of a cable can be installed and utilized in existing bridges, but they are difficult to install.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, an analysis method capable of efficiently measuring the responses of cables is required for the constant monitoring of remote cables . Moreover, along with studies on cable tension measurement and estimation accuracy improvement, many studies have also been conducted to make the cable tension estimation process more efficient and convenient . The method of using vision‐based systems is noncontact and economical, thus being suitable for cable tension estimation using indirect methods with limited accessibility.…”

Section: Introductionmentioning

confidence: 99%

Image‐based back analysis for tension estimation of suspension bridge hanger cables

Kim

Cheung

Park³

et al. 2020

Struct Control Health Monit

View full text Add to dashboard Cite

Summary In suspension bridges, hanger cables are the main load‐supporting members. The tension of the hanger cables of a suspension bridge is a very important parameter for assessing the integrity and safety of the bridge. In general, indirect methods are used to measure the tension of the hanger cables of a suspension bridge in use. A representative indirect method is the vibration method, which extracts modal frequencies from the cables' responses and then measures the cable tension using the cables' geometric conditions and the modal frequencies. In this study, ambient vibration tests were conducted on a suspension bridge in use to verify the validity of the image‐based back analysis method, which can estimate the tension of remote hanger cables using the modal frequencies as a parameter. The tension estimated through back analysis, which was conducted to minimize the difference between the modal frequencies calculated using finite element analysis of the hanger cables and the measured modal frequencies, was compared with that measured using the vibration method. It was confirmed that reliable tension estimation is possible even with low‐order modal frequencies when the image‐based back analysis method is used.

show abstract

“…Ceballos and Prato presented an explicit analytical expression for natural frequencies in the cable of cable-stayed bridge considering the effect of bending stiffness and rotational constraint at the ends. [8] The paper discusses techniques for approximate determination of the rotational stiffness at the ends for the most common arrangements of anchors and cables. Park et al [9] estimated the tension force of a double hanger cable system with the aid of a finite element analysis, and good accuracy of this method is verified through laboratory experiments.…”

Section: Introductionmentioning

confidence: 99%

Genetic Algorithm-based tension identification of hanger by solving inverse eigenvalue problem

Xie

2013

Inverse Problems in Science and Engineering

View full text Add to dashboard Cite

This paper proposed a new method for identification of tension force of hangers used in arch bridges. The hanger is modelled by finite element method (FEM). The relation between frequency and tension force is obtained from the eigenvalue equation of FEM model, and Genetic Algorithm method is utilized to solve the inverse eigenvalue problem. By matching the theoretical frequencies of analytical model with the measured frequency values, the proposed method is able to identify the tension force, the bending stiffness and the boundary conditions of hangers, simultaneously. The proposed method is performed in numerical simulations and a field measurement of an arch bridge. Both the numerical study and field test verified the feasibility and accuracy of the proposed method.

show abstract

Determination of the axial force on stay cables accounting for their bending stiffness and rotational end restraints by free vibration tests

Cited by 76 publications

References 5 publications

Dynamic testing of cable structures

Dynamic testing of cable structures

Image‐based back analysis for tension estimation of suspension bridge hanger cables

Genetic Algorithm-based tension identification of hanger by solving inverse eigenvalue problem

Contact Info

Product

Resources

About