Procedia Structural Integrity最新文献_第2页

In-situ testing and modeling of a masonry bridge in Surrey (UK): Waverley Mill bridge 英国萨里郡一座砌体桥的原位测试和建模：韦弗利磨坊桥

Procedia Structural Integrity Pub Date : 2024-01-01 DOI: 10.1016/j.prostr.2024.09.262

Nicoletta Bianchini , Zein Sabra , Kieren Green , Ross Wright

{"title":"In-situ testing and modeling of a masonry bridge in Surrey (UK): Waverley Mill bridge","authors":"Nicoletta Bianchini , Zein Sabra , Kieren Green , Ross Wright","doi":"10.1016/j.prostr.2024.09.262","DOIUrl":"10.1016/j.prostr.2024.09.262","url":null,"abstract":"<div><div>Many historic masonry arch bridges on road and railway systems across Europe and the United Kingdom remain operational despite exhibiting structural loss of performance. In the United Kingdom alone, there are more than 70,000 masonry arch spans, with many having undergone design modifications and load adjustments over the years. These modifications typically entail incorporating new materials and bearing elements, with compliance to modern standards being unsuitable and rare. Such circumstances lead to limited understanding of these structures, impacting the accuracy of the bridge capacity assessments. This study is dedicated to the examination of a composite bridge composed of two spans with limited accessibility, located in Waverley Abbey, Surrey. The research (reviews/investigates) two primary aspects: firstly, the diagnostic phase involving in-situ non- destructive methods such as Ground Penetrating Radar (GPR) and more intrusive techniques like coring. The second phase entails a numerical assessment using a limit analysis numerical model which considers several modelling assumptions including flooded conditions, ring separation and accounting for defects. In the future, discontinuity layout optimization (DLO) and structural health monitoring (SHM) techniques can be used to extend the scope of the traditional rigid block limit analysis method and useful for calibrating numerical models and performing direct checks of performance goal compliance. As the Waverley bridge serves as a representative example of the numerous structures predominantly found in the Surrey region, this investigation can be extended to include bridges sharing similar material, geometry and shapes.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"64 ","pages":"Pages 352-359"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ground investigation: a tool for landslide risk mitigation of infrastructures 地面勘测：减轻基础设施滑坡风险的工具

Procedia Structural Integrity Pub Date : 2024-01-01 DOI: 10.1016/j.prostr.2024.09.075

G. Scarpelli , A. Ferretti , E. Mammoliti , P. Ruggeri , E. Sakellariadi

{"title":"Ground investigation: a tool for landslide risk mitigation of infrastructures","authors":"G. Scarpelli , A. Ferretti , E. Mammoliti , P. Ruggeri , E. Sakellariadi","doi":"10.1016/j.prostr.2024.09.075","DOIUrl":"10.1016/j.prostr.2024.09.075","url":null,"abstract":"<div><div>Recent monitoring experiences for bridges in Central and South Italy have shown that it is not common for bridges to be directly damaged by landslides phenomena in their vicinities, either because their siting was very carefully selected at the origin or because appropriate protection measures have been taken to reduce geological risk to acceptable levels. In the first case, periodic visual inspections of the manufacts may suffice to monitor possible consequences of ground instability phenomena, but in the second case monitoring of the infrastructure and of the ground is the only possible tool to evaluate the existence of a landslide-structure interaction which can influence its performance and safety. Ground investigation is a fundamental activity for landslide monitoring and analysis, and this is specifically true when a landslide-infrastructure interaction problem needs to be investigated and assessed. By discussing the results from case studies recently inspected, this paper shows how the knowledge of the physical processes and the monitoring of selected parameters are the first irreplaceable tools to mitigate risks associated with instability phenomena interacting with sensitive infrastructures.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"62 ","pages":"Pages 530-537"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A simplified procedure for the seismic retrofit of bridges by seismic isolation: Part 2 - predimensioning of the isolation system 桥梁隔震改造的简化程序：第 2 部分--隔震系统的预先设计

Procedia Structural Integrity Pub Date : 2024-01-01 DOI: 10.1016/j.prostr.2024.09.095

Carlo Pettorruso , Virginio Quaglini

{"title":"A simplified procedure for the seismic retrofit of bridges by seismic isolation: Part 2 - predimensioning of the isolation system","authors":"Carlo Pettorruso , Virginio Quaglini","doi":"10.1016/j.prostr.2024.09.095","DOIUrl":"10.1016/j.prostr.2024.09.095","url":null,"abstract":"<div><div>This study presents a simplified procedure for the seismic retrofit of bridges by means of isolation system (IS), applicable to bridges with an isostatic or continuous deck layout, supported by conventional bearings that can be replaced by seismic isolators. The procedure consists of two steps: (1) the assessment of suitability of the bridges for seismic isolation; (2) the preliminary design of the isolation system. The first part of the procedure is presented in a companion paper. This contribution presents the second step of the procedure. A nonlinear static analysis of the existing bridge is performed, and its capacity curve is determined. This curve is then transformed into that of the equivalent SDOF system. Combining the information of the nonlinear static analysis and the bridge characteristics in the ADRS plane, the minimum characteristics of the isolation system to achieve a preset performance point are derived. Two scenarios are considered: in the first one it is sufficient to shift the period of the deck; in the second one, in addition to period shifting, it is necessary to introduce damping to control the displacement of the deck. Once the minimum characteristics of the isolators have been defined, the type and model can be identified through a search into databases of commercial devices. The application of the procedure to a case-study bridge and the validation of the method are finally shown.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"62 ","pages":"Pages 685-692"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Defects detection of pier and abutments foundations: an overview of a recent experience in Basilicata (Southern Italy) 桥墩和桥台地基缺陷检测：巴西利卡塔（意大利南部）近期经验概述

Procedia Structural Integrity Pub Date : 2024-01-01 DOI: 10.1016/j.prostr.2024.09.026

Michele D’Amato , A. Lo Monaco , A. Palmiotta , A. Ranaldo , S.F. Dal Sasso , M. Fiorentino , M.R. Margiotta , B. Onorati , B. Sileo , T. Pizzolla

{"title":"Defects detection of pier and abutments foundations: an overview of a recent experience in Basilicata (Southern Italy)","authors":"Michele D’Amato , A. Lo Monaco , A. Palmiotta , A. Ranaldo , S.F. Dal Sasso , M. Fiorentino , M.R. Margiotta , B. Onorati , B. Sileo , T. Pizzolla","doi":"10.1016/j.prostr.2024.09.026","DOIUrl":"10.1016/j.prostr.2024.09.026","url":null,"abstract":"<div><div>Piers and abutments are bridge supports temporarily or permanently immersed into the water, that may suffer erosion and scour phenomena. As known, the latter involves different processes at different spatial scales not easy to investigate in a combined approach, such as: contraction scour, local scour, gradation of the soil bed, river channel dynamic, climate change and hydrological forces. To this, it should be added that piers/abutments are highly exposed to environmental actions, such as earthquake, landslides and floods that may seriously compromise their stability and, consequently, lead the bridge or an its portion to an out-of-service, or else to a failure. Therefore, it is important to properly identify and assess defects extent and severity on piers and abutments, in order to evaluate their conservation status, and to formulate a judgment for ranking priorities within a multi-level and multi-criteria framework, such as the recent guidelines issued by the Italian Ministry of Infrastructures and Transport. To this regard, in this work an overview of some significant defects related to piers and abutments, with particular emphasis to the ones due to the interaction with the water flow, are illustrated and commented. They are collected in an on-going campaign of inspections performed in the Basilicata region (South of Italy), concerning bridges falling within State Roads networks. Comments are made from a structural and hydraulic point view, in order to highlight the inspected defects importance within the Classes of Attention, according to Italian Guidelines for bridges.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"62 ","pages":"Pages 137-144"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142423963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of the failure costs of a bridge 桥梁故障成本分析

Procedia Structural Integrity Pub Date : 2024-01-01 DOI: 10.1016/j.prostr.2024.09.019

Alberto Contardi , Francesco La Fortezza

{"title":"Analysis of the failure costs of a bridge","authors":"Alberto Contardi , Francesco La Fortezza","doi":"10.1016/j.prostr.2024.09.019","DOIUrl":"10.1016/j.prostr.2024.09.019","url":null,"abstract":"<div><div>The preferable maintenance strategy for aged bridges is the one which involves the lowest possible total cost for the community, where for each bridge the total cost is expressed by the sum of the costs of the interventions plus total damages caused by exceeding the limit states multiplied by the probability of exceeding the limit states.</div><div>The most delicate and most complex part of the calculation is the determination of damages since the uncertainties involved are many and the values of these parameters may significantly impact on the results of the calculation. Each damage can be estimated as the sum of direct costs (reconstruction of the collapsed part, social consequences like injuries and fatalities, environmental effects) and indirect damages (infrastructure disruption, psychological effects).</div><div>Direct costs are quite easy to calculate, but they are also the least significant items. We could evaluate the huge amount of indirect costs using the studies available in literature and also learning from past accidents. Today we know the economic and social consequences of many historical collapses, so it is possible to find out which factors influence the results the most and to determine the real magnitude of each type of damage. In this article many indications are provided to make a reliable estimate of the failure costs for a generic bridge.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"62 ","pages":"Pages 81-88"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Road bridges exposure and alternative routes: towards the definition of road network resilience 道路桥梁风险和替代路线：确定道路网络的复原力

Procedia Structural Integrity Pub Date : 2024-01-01 DOI: 10.1016/j.prostr.2024.09.021

Giada Limongi , Pasquale Bencivenga , Costantino Dell’Aversano , Vittorio Emanuele Iervolino , Angelo Lavino , Mattia Zizi , Gianfranco De Matteis

{"title":"Road bridges exposure and alternative routes: towards the definition of road network resilience","authors":"Giada Limongi , Pasquale Bencivenga , Costantino Dell’Aversano , Vittorio Emanuele Iervolino , Angelo Lavino , Mattia Zizi , Gianfranco De Matteis","doi":"10.1016/j.prostr.2024.09.021","DOIUrl":"10.1016/j.prostr.2024.09.021","url":null,"abstract":"<div><div>The road network represents both element-at-risk and key infrastructure to ensure the accessibility of peripheral areas. The overall risk levels of bridges depend on geophysical (mainly earthquakes and landslides) and hydrometeorological hazards (mainly floods), the physical vulnerability of structures, and the exposure (mainly resulting from traffic flows and the presence of alternative roads). In mountain contexts and peripheral territories, the accessibility of entire territorial system directly depends on few trunk and secondary roads. The risk assessment of bridges, according to the Ministerial Guidelines, provides inputs for a territorial risk assessment starting from the accessibility of peripheral territories and the redundancy of the road network as features to determine the resilience of the road network. This study aims at understanding the relationships between bridges as elements-at-risk part of the road network and the influence they have on the overall accessibility of a territory. In this study, through a GIS analysis of a set of selected roads of the Provinces of Caserta (Campania Region), the presence of bridges along the selected roads have been combined with data on the accessibility levels of municipalities they connect. At this purpose, reference to the classification provided by the National Strategy for Inner Areas (SNAI) has been made to understand how such a classification can change due to a road interruption because of a bridge interruption. The contribution aims at setting the stage for the implementation of a method to determine the presence of alternative roads based on travel times adopted by the SNAI classification and, as a result, the definition of unique threshold values that justifies the variation of the exposure class and allows to determine the resilience of the whole road network.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"62 ","pages":"Pages 97-104"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrological models and datasets to support flood flow estimation at river-bridge intersections 支持河桥交叉口洪水流量估算的水文模型和数据集

Procedia Structural Integrity Pub Date : 2024-01-01 DOI: 10.1016/j.prostr.2024.09.091

D. Ganora , G. Evangelista , P. Mazzoglio , P. Claps

{"title":"Hydrological models and datasets to support flood flow estimation at river-bridge intersections","authors":"D. Ganora , G. Evangelista , P. Mazzoglio , P. Claps","doi":"10.1016/j.prostr.2024.09.091","DOIUrl":"10.1016/j.prostr.2024.09.091","url":null,"abstract":"<div><div>A working group on the \"Hydraulic Compatibility of Bridges\" (sites.google.com/view/gii-ponti) has been recently established in the hydraulic engineering academic community aiming at reviewing methodologies, studying good practices, and suggesting guidelines for assessing the bridge hydraulic compatibility. In this initiative, a subgroup is focusing on the hydrological aspects as in Italy there are not standard procedures to estimate design flood values requested by the Italian technical standards of constructions (NTC 2018) over the whole country as, for example, in the UK where the Flood Estimation Handbook provides standard data and methods. Some models are available at the regional scale but are often based on not up-to-date data; moreover, while in large rivers flood discharge values, defined according to the European Flood Directive have been computed and mapped, in small river catchments they are not available.</div><div>In this context, the unit of Politecnico di Torino working on hydrology is going to release some country-wide hydrological datasets, including all the available official information on discharge and rainfall extremes updated to recent years, that can be used as a common reference for bridge analyses. These include high-resolution maps of extreme precipitation statistics, a database of flood flow extremes recorded at more than 600 river sections, and a catalogue of river catchments characteristics (morphology, climate, land use, etc).</div><div>Nation-wide datasets can support the application of standardized hydrological analyses, needed for flood hazard assessment, especially in small basins. Operational products will be made available within the PNRR RETURN project in order to be easily available and referable for any hydrological analysis in Italy.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"62 ","pages":"Pages 653-660"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Definition of direct and indirect types of landslide-bridge interference and a checklist for identifying and characterizing potential landslides 山体滑坡桥梁直接和间接干扰类型的定义，以及识别和描述潜在山体滑坡的清单

Procedia Structural Integrity Pub Date : 2024-01-01 DOI: 10.1016/j.prostr.2024.09.077

Nicola Perilli , Massimiliano Lombardi , Nicola Nenci , Nunziante Squeglia , Stefano Stacul

{"title":"Definition of direct and indirect types of landslide-bridge interference and a checklist for identifying and characterizing potential landslides","authors":"Nicola Perilli , Massimiliano Lombardi , Nicola Nenci , Nunziante Squeglia , Stefano Stacul","doi":"10.1016/j.prostr.2024.09.077","DOIUrl":"10.1016/j.prostr.2024.09.077","url":null,"abstract":"<div><div>According to the new Italian Guidelines on existing bridges (LLG) the evaluation of the landslide susceptibility, vulnerability, and exposure, is based on the collection of the data necessary to fill the Field Sheet Form during the Periodic Field Surveys. Based on the knowledge and expertise gained during the inspections of the surrounding areas of a relevant number of existing bridges located in different geomorphological and geological contexts (i.e., Northern and Southern Apennines of Italy), the Authors recognized several difficulties in the accurate evaluation of the parameters to assess susceptibility and vulnerability according to LLG. In particular, the evaluation of the secondary parameters, namely <em>extent of the interference</em> and <em>overall reliability of the assessment</em>, depends greatly on the arbitrariness of the inspector. The main objectives of this work are: (a) to provide useful elements to distinguish between two types of landslide-bridge interference (direct and indirect) and evaluate the <em>extent of the interference</em> parameter (available options are: <em>Total, Partial</em>, and <em>Approach Zone</em>); (b) to propose an Additional Field Sheet Form aimed to improve the identification and characterization of Potential Landslides and to make more objective the self-evaluation of the inspector about the <em>overall reliability of the assessment</em> (two options: <em>good, limited</em>) of the primary parameters characterizing the landslide (<em>activity, velocity</em>, and <em>magnitude</em>).</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"62 ","pages":"Pages 546-552"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Management of road bridge networks in Italy by means of integrated SHM systems 利用综合 SHM 系统管理意大利公路桥梁网络

Procedia Structural Integrity Pub Date : 2024-01-01 DOI: 10.1016/j.prostr.2024.09.206

Filippo Andreose , Paolo Borlenghi , Giuseppe Chellini , Flora Faleschini , Enrique Garcìa-Macìas , Carmelo Gentile , Lorenzo Lepori , Francesco Mariani , Paolo Mannella , Carlo Pellegrino , Antonello Ruccolo , Walter Salvatore , Elisa Tomassini , Filippo Ubertini , Ilaria Venanzi , Mariano Angelo Zanini

{"title":"Management of road bridge networks in Italy by means of integrated SHM systems","authors":"Filippo Andreose , Paolo Borlenghi , Giuseppe Chellini , Flora Faleschini , Enrique Garcìa-Macìas , Carmelo Gentile , Lorenzo Lepori , Francesco Mariani , Paolo Mannella , Carlo Pellegrino , Antonello Ruccolo , Walter Salvatore , Elisa Tomassini , Filippo Ubertini , Ilaria Venanzi , Mariano Angelo Zanini","doi":"10.1016/j.prostr.2024.09.206","DOIUrl":"10.1016/j.prostr.2024.09.206","url":null,"abstract":"<div><div>Management of stocks with large number of bridges is a relevant issue for the Italian roadway system. In the last years the use of integrated SHM (Structural Health Monitoring) systems is being introduced within the framework of the modern BMS (Bridge Management Systems) with the aim of implementing a continuous damage identification strategy. In this framework, ambient vibration-based SHM has received most attention owing to its minimal intrusiveness, non-destructive character and global damage identification capabilities. A lot of research effort has been devoted in the last years to SHM techniques but ease of use, interpretability and minimal intervention of expert judgement are essential issues for the fruitful application of SHM in real and wide bridge networks. ANAS S.p.A., the main road managing Authority in Italy, is implementing a huge monitoring program on its bridge network with the main purpose of addressing the recent indications of the Italian guidelines for assessing and monitoring of bridges, and the University of Padova, together with the University of Perugia, Politecnico of Milan, University of Pisa and the other Universities of FABRE Consortium are supporting ANAS for the real application of modern SHM techniques. According to these actual needs, a new software suite called P3P has been developed and is being applied to a huge stock of bridges distributed in all the Italian territory.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"64 ","pages":"Pages 40-47"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wave-based fault detection in concrete by the Full Waveform Inversion considering noise 通过考虑噪声的全波形反演进行混凝土故障检测

Procedia Structural Integrity Pub Date : 2024-01-01 DOI: 10.1016/j.prostr.2024.09.223

Ina Reichert , Tom Lahmer

{"title":"Wave-based fault detection in concrete by the Full Waveform Inversion considering noise","authors":"Ina Reichert , Tom Lahmer","doi":"10.1016/j.prostr.2024.09.223","DOIUrl":"10.1016/j.prostr.2024.09.223","url":null,"abstract":"<div><div>In the field of non-destructive testing of concrete, the use of ultrasonic waves became state of the art, among other techniques. Nevertheless, there is still room for improvement, in particular concerning the resolution and robustness of the monitoring results.</div><div>One approach is the application of the Full Waveform Inversion (FWI) originating from geotechnical engineering, known here as seismic tomography. The forward and backpropagation of waves within a numerical model are deployed to identify material parameters, like the primary and secondary wave velocity as well as density. This approach forms a non-linear, and ill-posed mathematical problem. Its solution is computationally demanding and time-consuming.</div><div>Within the presented approach, the Full Waveform Inversion is used on a numerically simulated artificial concrete specimen of relatively large dimensions. Here, the synthetic ultrasound data is compromised by the consideration of different levels of Gaussian white noise. Additionally, several sizes and positions of faults are computed to simulate a variety of possible defects within the concrete material as in reality. Subsequently, the identifiability of the fault together with its recognition quality are investigated. Additionally, recommendations on sensor positioning and layout are given.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"64 ","pages":"Pages 145-152"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0