IABSE Symposium, Wroclaw 2020: Synergy of Culture and Civil Engineering – History and Challenges最新文献_第2页

Possible Application of FRP Bridges in Renovation and Replacement Task of Rijkswaterstaat 玻璃钢桥梁在水城改造更换工程中的应用前景

IABSE Symposium, Wroclaw 2020: Synergy of Culture and Civil Engineering – History and Challenges Pub Date : 1900-01-01 DOI: 10.2749/wroclaw.2020.1000

J. de Boon, D. Schaafsma, J. van der Heide

{"title":"Possible Application of FRP Bridges in Renovation and Replacement Task of Rijkswaterstaat","authors":"J. de Boon, D. Schaafsma, J. van der Heide","doi":"10.2749/wroclaw.2020.1000","DOIUrl":"https://doi.org/10.2749/wroclaw.2020.1000","url":null,"abstract":"An increasing number of existing bridges no longer comply to current standards or have become functionally obsolete. Complete renovation is costly, time-consuming, results in disruption of traffic and is not sustainable. Current repair alternatives are often time-consuming and heavy in weight. In addition to existing methods, fiber-reinforced plastics (FRP) could provide a repair alternative whereby applying a FRP deck will relieve the main girders and can mean that the greater part of the existing bridge can remain. The lifespan of existing structures can be longer extended. This offers new technical and strategic possibilities for the major renovation and replacement task of bridge structures of Rijkswaterstaat, explained in this paper. An updated version of the Dutch CUR-96 recommendation on the design of FRP structures was published in 2018 and an English translation in 2019. This document offers an improved framework and guidelines and is comparable to the Eurocodes regarding concrete and steel structures at material level. The recommendation may therefore be regarded as a desirable basis for the development of a Eurocode for FRP composite structures. Like other road authorities, Rijkswaterstaat is looking into the possibility of replacing current bridge deck structures of highway structures with FRP decks, mainly due to the favorable weight and durability performance. Various already applied FRP structures in Europe demonstrate the possibilities and value of its application.","PeriodicalId":107895,"journal":{"name":"IABSE Symposium, Wroclaw 2020: Synergy of Culture and Civil Engineering – History and Challenges","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131078135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Suspension String Future Structure 悬挂管柱未来结构

IABSE Symposium, Wroclaw 2020: Synergy of Culture and Civil Engineering – History and Challenges Pub Date : 1900-01-01 DOI: 10.2749/wroclaw.2020.0733

E. Beivydas

引用次数: 0

Planning Post-Earthquake Surveys: Assessments and Reconstruction of Small Historical Centres 规划震后调查:小型历史中心的评估与重建

IABSE Symposium, Wroclaw 2020: Synergy of Culture and Civil Engineering – History and Challenges Pub Date : 1900-01-01 DOI: 10.2749/wroclaw.2020.0332

V. Croce, D. Diamantidis, M. Sýkora

引用次数: 0

Extended Validation for Using Nonlinear Finite Element Analysis for Assessing Existing Concrete Structures 用非线性有限元分析评估既有混凝土结构的扩展验证

IABSE Symposium, Wroclaw 2020: Synergy of Culture and Civil Engineering – History and Challenges Pub Date : 1900-01-01 DOI: 10.2749/wroclaw.2020.0861

A. de Boer, M. Hendriks, Y. Yang

{"title":"Extended Validation for Using Nonlinear Finite Element Analysis for Assessing Existing Concrete Structures","authors":"A. de Boer, M. Hendriks, Y. Yang","doi":"10.2749/wroclaw.2020.0861","DOIUrl":"https://doi.org/10.2749/wroclaw.2020.0861","url":null,"abstract":"The Dutch Ministry of Infrastructure and the Environment is concerned with the safety of existing infrastructure and expected re-analysis of a large number of bridges and viaducts. Nonlinear finite element analysis (NLFEA) can provide a tool to assess safety to obtain a more realistic estimation of the existing safety. Guidelines, based on scientific research, general consensus among peers, and a long-term experience with nonlinear analysis, allow for a reduction of model and user factors. The guidelines have been developed with a two-fold purpose. First, to advice analysts on NLFEA of (P)RC structures. Second, to explain the choices made and to educate analysts, related to the responsibility of limiting model uncertainty. The updated 2017 NLFEA Guidelines can be used for the FE analysis of basic concrete structural elements. Existing concrete structures, like box-girder structures, culverts, cable-stayed bridges and bridge with composite bridge decks can be analysed. The paper contains an overview of the impact of extended validation simulations of tested RC girders with variations in dimensions of cross-sections, amount of reinforcement, strength of concrete. In this way NLFEA can be a reliable tool for re-analysis of existing RC structures.","PeriodicalId":107895,"journal":{"name":"IABSE Symposium, Wroclaw 2020: Synergy of Culture and Civil Engineering – History and Challenges","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123667905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Collapse of the Morandi’s Bridge: Remarks About Fatigue and Corrosion 莫兰迪大桥的倒塌:关于疲劳和腐蚀的评论

IABSE Symposium, Wroclaw 2020: Synergy of Culture and Civil Engineering – History and Challenges Pub Date : 1900-01-01 DOI: 10.2749/wroclaw.2020.1040

S. Invernizzi, F. Montagnoli, A. Carpinteri

{"title":"The Collapse of the Morandi’s Bridge: Remarks About Fatigue and Corrosion","authors":"S. Invernizzi, F. Montagnoli, A. Carpinteri","doi":"10.2749/wroclaw.2020.1040","DOIUrl":"https://doi.org/10.2749/wroclaw.2020.1040","url":null,"abstract":"On August 14, 2018, a few spans of the cable-stayed viaduct crossing the Polcevera river (Genoa, Italy) collapsed, causing tens of fatalities along with considerable material damage and hundreds of people displaced. The viaduct, as well as many others belonging to the national road network, was built in the second half of the last Century and has been in service for over fifty years. The bridge has experienced a dramatic increase in the heavy lorries traffic, together with degradation that developed much faster than expected due to the aggressive environment. In the present paper, a possible scenario is proposed to put into evidence how the combined effect of fatigue at very-high number of cycles and corrosion could have been responsible for the sudden failure of one of the strands and the subsequent collapse of the so-called balanced system conceived by the designer Morandi. Our purpose is to warn the scientific community and the public administrations about the combined effects of low amplitude cycle fatigue and corrosion, which can be dangerously underestimated in the safety assessment of last Century bridges asset.","PeriodicalId":107895,"journal":{"name":"IABSE Symposium, Wroclaw 2020: Synergy of Culture and Civil Engineering – History and Challenges","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124647555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Strengthening of Slab Bridges with Top Concrete Layers 混凝土板桥的加固

IABSE Symposium, Wroclaw 2020: Synergy of Culture and Civil Engineering – History and Challenges Pub Date : 1900-01-01 DOI: 10.2749/wroclaw.2020.0909

Marc-Patrick Pfleger, M. Vill

引用次数: 0

Parametric Green Footbridges in Urban Space. a new Approach to Design Environment-friendly Structures 城市空间中的参数化绿色人行桥。设计环境友好型结构的新途径

IABSE Symposium, Wroclaw 2020: Synergy of Culture and Civil Engineering – History and Challenges Pub Date : 1900-01-01 DOI: 10.2749/wroclaw.2020.0372

K. Januszkiewicz, J. Gołębiewski

引用次数: 0

Riccardo Morandi and his Legacy in the Realization of Italian Concrete Bridges 里卡多·莫兰迪及其在意大利混凝土桥梁实现中的遗产

IABSE Symposium, Wroclaw 2020: Synergy of Culture and Civil Engineering – History and Challenges Pub Date : 1900-01-01 DOI: 10.2749/wroclaw.2020.0291

E. Siviero, M. Culatti, A. Zanchettin

引用次数: 0

Behaviour Assessment of Bridges Considering the Effect of the Progressive Scour and Fill over Time 考虑随时间递进冲刷和填土影响的桥梁行为评价

IABSE Symposium, Wroclaw 2020: Synergy of Culture and Civil Engineering – History and Challenges Pub Date : 1900-01-01 DOI: 10.2749/wroclaw.2020.0885

D. Flores Vidriales, R. Gómez Martínez, D. Tolentino López

{"title":"Behaviour Assessment of Bridges Considering the Effect of the Progressive Scour and Fill over Time","authors":"D. Flores Vidriales, R. Gómez Martínez, D. Tolentino López","doi":"10.2749/wroclaw.2020.0885","DOIUrl":"https://doi.org/10.2749/wroclaw.2020.0885","url":null,"abstract":"The scour-fill phenomena can be considered as the principal cause of bridge collapses in México, in the last twenty years thirty-six bridges have collapsed and ninety-nine have suffered damages due to scour. Scour-fill phenomena can be divided into two stochastic variables: 1) The erosive process, 2) The sedimentation process. A simplified stochastic process is proposed for the study of both phenomena. The events that trigger the scour are modelled using data that is statistically pre-processed, their behaviour is characterized as a general extreme value distribution (GEV). The events that trigged the sedimentation are modelled in the same fashion that the erosion, but their behaviour is characterized as a lognormal distribution. The stochastic process is solved by Monte Carlo simulations, each simulation provides a history of scour-fill depths that are later used to assess the behaviour of the bridge using a non-linear static analysis . Based on the results it can be seen that the scour accumulation of multiple low return period events may be much higher that the common design event for hydraulic events, making the bridges weaker against lateral forces.","PeriodicalId":107895,"journal":{"name":"IABSE Symposium, Wroclaw 2020: Synergy of Culture and Civil Engineering – History and Challenges","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134022085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Innovative Design of a Long Integral Bridge in the UK 英国一座整体长桥的创新设计

IABSE Symposium, Wroclaw 2020: Synergy of Culture and Civil Engineering – History and Challenges Pub Date : 1900-01-01 DOI: 10.2749/wroclaw.2020.0446

M. Sankaran, P. Isidorou

引用次数: 0