Post-rehabilitation assessment of a centenary steel bridge through numerical and experimental analysis

Cavadas, Filipe; Rodrigues, Carlos Frederico de Almeida; Félix, Carlos; Figueiras, Joaquim

doi:10.1016/j.jcsr.2012.09.020

Cited by 10 publications

(9 citation statements)

References 17 publications

(21 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dynamic strain distribution was substituted into equation (4) to calculate the dynamic displacement. The strain of Elements 1, 2, 19 and 20 was also assessed with the strain measurements of the adjacent element as the static test.…”

Section: Resultsmentioning

confidence: 99%

“…Meanwhile, the strain measurements of the adjacent sensors were applied as the basis of the calculation. Finally, the obtained strain distribution was substituted into equation (4) to calculate the displacement.…”

Section: Analysis Of Optimising Sensor Distributionmentioning

confidence: 99%

“…This is because vertical displacement can easily be used to assess the structural performance based on the design code. Another reason is that it can be measured by simple methods such as linear variable differential transformer (LVDT) 4 and global positioning system (GPS). 5 However, it is difficult to measure the displacement of bridges with small-or mediumspan length on a long-term basis, as each of the common traditional methods [6][7][8][9][10][11] has some defects that can affect their performance.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Displacement measurement of a concrete bridge under traffic loads with fibre-reinforced polymer-packaged optical fibre sensors

Tang

Cang

Yao

et al. 2020

Advances in Mechanical Engineering

View full text Add to dashboard Cite

Current displacement measurement methods cannot cope with the demands of the long-term measurement of small-or medium-span concrete bridges because of some technology or economic challenges. In this article, a displacement measurement method is proposed for concrete bridges based on fibre-reinforced polymer-packaged optical fibre sensors. The sensing principle and manufacture process of the proposed sensor are introduced as well as the strain sensing property. Then, a relationship is established between the strain and the displacement based on the distributed strain monitoring. Finally, some field tests are implemented using a simply supported concrete bridge. The tests include static loading test, dynamic loading test with specific speeds and dynamic random traffic loading test. The field test results show that the proposed method can measure the displacement of concrete bridges under traffic loads with reasonable accuracy. Moreover, different types of sensor distributions are proposed to investigate the displacement measurement effects to optimise the sensor installation. Although the sensors cover only some key parts of the girder, the results also verify the accuracy of the proposed method. Therefore, the proposed method can be implemented in concrete bridges in future.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Analysis Of Optimising Sensor Distributionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Displacement measurement of a concrete bridge under traffic loads with fibre-reinforced polymer-packaged optical fibre sensors

Tang

Cang

Yao

et al. 2020

Advances in Mechanical Engineering

View full text Add to dashboard Cite

show abstract

“…SHM has been used as an approach to infuse quantitative measurements to the current visual inspections, providing the means for a real‐time event monitoring of civil engineering structures. The applications of SHM are manifold, providing a valuable insight for the assessment of execution control during construction stages, rehabilitation, post‐rehabilitation and in‐service structures . One of the current difficulties of SHM is the characterization of the macroscopic deformation response of structures to extreme events like strong ground motions, collisions and blast explosions.…”

Section: Introductionmentioning

confidence: 99%

Shape-memory alloys as macrostrain sensors

Santos¹

2016

Struct. Control Health Monit.

View full text Add to dashboard Cite

Summary The present paper studies the feasibility, through physical experimentation, of efficient and low‐cost macrostrain sensors, based on shape‐memory alloy technologies. The motivation of this work is to explore the intrinsic relation between electrical resistivity and strain, associated with the development of the stress induced martensitic transformation in superelastic shape‐memory alloys. This property enables the material to endure deformations up to 8% without any residual strains, making shape‐memory alloy wires excellent candidates for kernel elements in innovative strain transducers with dynamic ranges 4 to 5 times larger than the currently available strain transducers. An experimental prototype of a beam with a set of SMA macrostrain sensors is presented, featuring a timed scanning sequential algorithm to successfully perform the resistance readings. The aim of this work is to provide an additional insight into the potential of SMAs in new macrostrain measurement applications. Copyright © 2016 John Wiley & Sons, Ltd.

show abstract

“…In general, these performance characteristics pertain to Linear displacement transducers such as linear variable differential transformers (LVDT) are employed for direct measurement of deflections. They are often used during load tests when the bridge is closed to traffic or when it is possible to use a fixed reference point for the transducers [1,2]. For real time monitoring of deflections under operating traffic loads it is often difficult to establish a fixed reference point for displacement transducers, either because the bridge crosses over a body of water or a roadway.…”

Section: Introductionmentioning

confidence: 99%