Capabilities of a Fiber Bragg Grating Sensor System to Monitor the Inelastic Response of Concrete Sections in New Tunnel Linings Subjected to Earthquake Loading

Tondini, Nicola; Bursi, Oreste S.; Bonelli, Alessio; Fassin, Manuel

doi:10.1111/mice.12106

Cited by 29 publications

(19 citation statements)

References 30 publications

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“…The target was the development of a Decision Support System (DSS) for monitoring tunnel linings in seismic-prone areas. The designed fiber sensor system reliably performed at large deformations for some substructure sections and for a full-scale concrete tunnel lining section [10]. In fact, for the latter case, external FBG packing showed a deformation of 0.63%, while a value of 1.2% was reached by internal fibers.…”

Section: Applications To Projectsmentioning

confidence: 94%

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Towards intelligent civil infrastructure

Bursi

Zonta

Fassin

2015

2015 17th International Conference on Transparent Optical Networks (ICTON)

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We present our vision of civil engineering in the coming ten years. With the help of a number of research case studies, we will show how radical developments in telecommunications and sensor technologies are about to change the way that civil engineering design and infrastructure maintenance are conceived and carried out. Indeed, within the next ten years smart structural elements with embedded sensors and systems capable of self-diagnosis will be a normal part of buildings. Whereas today the structural engineer conceives the single building or bridge as a stand-alone project, in future it is likely that structures will be regarded as cells in a complex being - the civil infrastructure network

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Section: Applications To Projectsmentioning

confidence: 94%

“…An application of FBG sensors in a concrete tunnel lining section, is also proposed in [10], and shown in Fig. 2d.…”

Section: Applications To Projectsmentioning

confidence: 99%

Towards intelligent civil infrastructure

Bursi

Zonta

Fassin

2015

2015 17th International Conference on Transparent Optical Networks (ICTON)

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“…Structural health monitoring (SHM) is the process of assessing the health of aerospace, civil, and mechanical engineering structures and identifying damage automatically . It can be used also to estimate the remaining life of the structure and life‐cycle cost analysis .…”

Section: Introductionmentioning

confidence: 99%

New method for modal identification of super high-rise building structures using discretized synchrosqueezed wavelet and Hilbert transforms

Park

Adeli

2016

Struct Design Tall Spec Build

131

106

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Summary Measured signals obtained by sensors during dynamic events such as earthquake, wind, and wave contain nonlinear, nonstationary, and noisy properties. In this paper, a new approach is presented for modal parameter identification of structures particularly suitable for very large real‐life structures such as super high‐rise building structures based on the integration of discretized synchrosqueezed wavelet transform, the Hilbert transform, and the linear least‐square fit. Its effectiveness is demonstrated first by application to a two‐dimensional frames from the literature, and then to the 123‐story Lotte World Tower (LWT) under construction in Seoul, Korea. The LWT measurements are very low‐amplitude ambient vibrations. Extracting the natural frequencies and damping ratios from such low‐amplitude signals are known to be very challenging. Further, the new methodology was compared with the empirical mode decomposition. It is demonstrated that the new method is capable of extracting both natural frequencies and damping rations from low‐amplitude signals effectively and with a higher accuracy compared with the empirical mode decomposition approach. The results of this research indicate a super high‐rise building like LWT has a damping ratio in the range 0.7–3.4%. The new method is quite promising for practical implementations of health monitoring of large real‐life structures.

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“…Some results on the full‐scale tunnel lining test are also presented in order to show the effectiveness of the FBG packaging optimization process performed in the substructure test programme. Nonetheless, more detailed information about this test and relevant damage estimation provided by FBG sensors can be found in a separate study .…”

Section: Introductionmentioning

confidence: 99%

Structural monitoring for the cyclic behaviour of concrete tunnel lining sections using FBG sensors

Bursi

Tondini

Fassin

et al. 2015

Struct. Control Health Monit.

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SUMMARYTo demonstrate the viability of using fibre Bragg grating (FBG) sensors capable of detecting the inelastic cyclic response of reinforced concrete sections that are part of tunnel linings, an experimental research programme carried out on different packaging configurations of FBG sensors is presented in this paper. The programme illustrated here was part of a wider research project funded by the European Commission whose objective was the development of a decision support system for monitoring tunnel linings in seismic-prone regions. In particular, a typical metro tunnel located in Rome area, Italy, was considered as a case study. In order to provide useful information for designing an effective sensor packaging to be applied to a final full-scale test representing a whole lining circular section of a tunnel, pure bending tests were designed and performed on five substructure specimens endowed with different sets of fibre packaging. The outcomes of the substructure tests showed that the optimal FBG packaging solutions were unbonded sensors either embedded in concrete or mounted externally. Moreover, the designed fibre sensor system reliably performed at large deformations. In fact, the external FBG fibres applied to the full-scale tunnel test approached maximum values of about 0.63%, whilst the internal fibres reached about 1.2%. The results obtained by FBG sensors were in good agreement with those of traditional transducers. Copyright

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Capabilities of a Fiber Bragg Grating Sensor System to Monitor the Inelastic Response of Concrete Sections in New Tunnel Linings Subjected to Earthquake Loading

Cited by 29 publications

References 30 publications

Towards intelligent civil infrastructure

Towards intelligent civil infrastructure

New method for modal identification of super high-rise building structures using discretized synchrosqueezed wavelet and Hilbert transforms

Structural monitoring for the cyclic behaviour of concrete tunnel lining sections using FBG sensors

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