Probabilistic performance prediction model for Austrian torrent control infrastructure

Paratscha, Roman; Strauß, Alfred; Smutny, Roman; Lampalzer, Thomas; Rauch, Hans Peter; Thannen, Magdalena von der

doi:10.1080/15732479.2018.1526195

Cited by 6 publications

(5 citation statements)

References 4 publications

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“…23). The assumed service life time represents the lower limit of the time to failure and describes the moment in which already 10% of the structures can be destroyed (Paratscha et al 2018). As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…A second study was carried out to define the use stage (B4-B5) and thus to determine the service lifetime of the structures. Within the study, a probabilistic model based on condition rating was developed, which shows the degradation of the structures (Paratscha et al 2018). Therefore, it was possible to represent the structure types in this study over their entire life cycle (see Fig.…”

Section: Methodsmentioning

confidence: 99%

“…The evaluation of the LCA results is based on published LCA case studies and relates to the conditions of the various emission sources. Otherwise, the application of an LCA is only qualitatively assessed and not quantitative (Muench et al 2011).…”

Section: Green Building Rating Systems For Infrastructurementioning

confidence: 99%

“…In contrast to all other uncertainties, a triangular distribution was assumed for the probability distribution of the service lifetime. Additional information about the specially developed prediction model can be found in Paratscha et al (2018).…”

Section: Parameter Uncertainties Within the Life Cycle Inventorymentioning

confidence: 99%

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Development of LCA benchmarks for Austrian torrent control structures

Paratscha

Thannen

Smutny

et al. 2019

Int J Life Cycle Assess

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Purpose This study emerged from a research project that aimed to develop a Life Cycle Assessment (LCA) model for torrent control structures. This publication constitutes the last part of model development and shows the LCA results of the examined structure types considering the entire life cycle. These LCA results will be used in a further step to close the environmental knowledge gap within the area of sustainability assessment. The sustainability assessment of buildings is already widespread and standardised in Green Building Rating Systems (GBRSs), which use LCA benchmarks for the rating of environmental indicators. The development of GBRSs for infrastructure is somewhat younger than the developements in the building sector and the existing systems do not yet provide LCA benchmarks for the environmental rating of the structures. The study shows how to derive benchmarks from the LCA results and thus gives a quantitative basis for a future rating of environmental indicators of torrent control structures. Methods The methodological basics for the LCA of torrent control structures were created by screening LCAs of several construction projects. From these construction projects, different structure types could be identified and classified. Functional units were developed, which can be assigned to the structure types. Uncertainties arise because these structure types are not always built in the same way. It can be distinguished between five uncertainties. Uncertainties of material dataset modeling, variable material use and machine use have been identified. Furthermore, the variable material use influences the emissions of transport. The transport in turn demonstrates uncertainties in the transport distances. Last but not least, there are variable service life times that dictate the replacement cycles of the structures. LCA benchmarks can be derived by the elevation of the various uncertainty distributions and its application in a Monte Carlo simulation. Results and discussion By applying the method described above, it was possible to develop LCA benchmarks for different types of torrent control structures. These benchmarks show the range of LCA results for these structures. Furthermore, a sensitivity and uncertainty contribution analysis was carried out to investigate dependencies. Conclusions By determining the range of LCA results, an estimate of environmental impacts in early planning stages becomes possible. Furthermore, this allows decision-making in early planning stages and throughout the entire life cycle of the structures, taking into account environmental impacts. A further development of the benchmarks requires the analysis of additional structures to increase the accuracy and to reduce parameter uncertainties.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Green Building Rating Systems For Infrastructurementioning

confidence: 99%

Section: Parameter Uncertainties Within the Life Cycle Inventorymentioning

confidence: 99%

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Development of LCA benchmarks for Austrian torrent control structures

Paratscha

Thannen

Smutny

et al. 2019

Int J Life Cycle Assess

Self Cite

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“…Protection structures from about 1880 to 1920 were mainly built from materials available in the vicinity of the torrent, with timber and dry stone structures being built in gullies. From 1920, structures were increasingly built of compacted concrete and stone, with structural concrete largely replacing these materials from 1970 [1] [2]. Development, both in design and detailing, was largely through the exchange of experience.…”

Section: Introductionmentioning

confidence: 99%

Einwirkung von Murgängen auf Schutzbauwerke – Das Messbauwerk am Gadriabach, Südtirol

Nagl

Hübl

2020

Geomechanics and Tunnelling

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The interaction between a protection structure and an acting process (e.g. debris flow) has only been described in a few publications so far. In particular, the acting forces and stresses have only been measured under real conditions in a few cases. Therefore it was necessary to design a monitoring barrier that could measure both the process parameters and the forces involved and their transfer into the ground. Such a structure was built 2016 in the Gadria torrent (South Tyrol). Data has meanwhile been measured, recorded and evaluated from five debris flows. With flow heights up to 2 m, densities up to 2,200 kg/m3 and velocities between 1 and 6 m/s, the measured impact forces could be compared with the existing loading approaches. The findings serve as a basis for the improvement of approaches for the design of protection structures.

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