Structural health monitoring of the Gaertnerplatz bridge over the Fulda river in Kassel considering environmental conditions

Link, Mark S.; Weiland, Matthias; Fehling, Ekkehard

doi:10.1201/9781315641645-318

Cited by 1 publication

(2 citation statements)

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“…Distributed fiber optic strain and temperature sensors, in combination with dynamic measurement elements (strain gauges and triaxial accelerometers) were placed on the bridge, effectuating data collection from the construction phase. Another continuous monitoring campaign is implemented in the Gaertnerplatz Bridge (Kassel) [49]. This multispan structure is characterized by the use of a UHPFRC deck and adhesive bond connections with other parts of the bridge.…”

Section: Monitoring Of Uhpfrc Structuresmentioning

confidence: 99%

“…Monitoring of existing structures provides essential information for the evaluation of safety conditions, thus rehabilitated components should specially be considered when realizing a monitoring campaign. In this context, numerical models play an important role in structural identification failures, by using modal data information (natural frequencies and mode shapes) [13]. Given this background, the work presented herein is organized as follows.…”

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confidence: 99%

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The use of Ultra High Performance Fibre Reinforced cement-based Composites in rehabilitation projects: a review

Martín-Sanz¹,

Chatzi²,

Brühwiler³

2016

Proceedings of the 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures

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Ultra High Performance Fibre Reinforced cement-based Composites (UHPFRC) form a novel material developed over the last two decades. A set of special traits, such as durability, outstanding material properties, and ease of application, render UHPFRC particularly attractive for the improvement (rehabilitation, strengthening) of concrete structures. Laboratory tests indicate a compressive strength, which ranges from 150 to 200 MPa, while tensile strength lies in the range of 7-15 MPa. The fibres play an important role in defining the range of these properties depending on the content (3-6%), orientation, length and composition. As a consequence, UHPFRC delivers a workable material whose mechanical properties may be properly adjusted according to the desired application scheme. As indicated via laboratory testing and in-situ experience, the durability of the structure may be extended not only due to the properties of UHPFRC but also due to the additional protection it offers to the reinforcement. This paper provides an overview on existing findings of UHPFRC implementations, focusing in the domain of improvement of structures. Within this context, UHPFRC may be applied on top of existing bridge decks [1],with or without steel rebars, ensuring full bond conditions via mere surface preparation prior to casting. In exploiting the attributes of UHPFRC within a rehabilitation context, further applications are being explored, such as strengthening of orthotropic steel decks in order to prevent fatigue issues [2]. Nonetheless, it should also be acknowledged that certain aspects need to be improved such as the development of a multi scale analysis framework, able to provide a detailed computational method without detriment to time efficiency. The introduction of monitoring technologies in structures with UHPFRC would unquestionably provide valuable insight into its long-term performance and help validate this scheme for the next generation of rehabilitation interventions.

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Section: Monitoring Of Uhpfrc Structuresmentioning

confidence: 99%

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confidence: 99%