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Design of the cross-section of a steel composite bridge taking into account the buckling check according to EN 1993-1-5 根据 EN 1993-1-5 设计钢混结构桥梁横截面时考虑屈曲检查
ce/papers Pub Date : 2024-09-11 DOI: 10.1002/cepa.3065
Joseph Ndogmo, Martin Mensinger
{"title":"Design of the cross-section of a steel composite bridge taking into account the buckling check according to EN 1993-1-5","authors":"Joseph Ndogmo,&nbsp;Martin Mensinger","doi":"10.1002/cepa.3065","DOIUrl":"https://doi.org/10.1002/cepa.3065","url":null,"abstract":"<div>\u0000 \u0000 <p>As part of optimizing a steel composite section to determine whether longitudinal stiffeners could be omitted concerning plate buckling, a buckling tool was developed that implements both the effective width method (EWM) and the reduced stress method (RSM). These two methods are offered in addition to the finite element method in EN 1993-1-5 for buckling analysis. It was found that when using the formula given in EN-1993-1-5 for calculating the critical buckling stress of unstiffened buckling fields, which is independent of the acting stress distribution, the ratio of the elastic critical plate buckling stress to the elastic critical column buckling stress (σ<sub>cr,p</sub>/σ<sub>cr,c</sub>) is underestimated if the compressive stress is not uniform. This affects the detection of column buckling behavior. The most economical variant resulting from the optimization, the buckling tool, the influence of shear deformations combined with plate buckling, and the column buckling behavior of unstiffened buckling fields are presented in this paper.</p>\u0000 </div>","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"7 3-4","pages":"62-67"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cepa.3065","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170159","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
Reliability-based Allowances of Corrosion Losses for Weathering Steel Bridges 基于可靠性的老化钢桥腐蚀损失预留量
ce/papers Pub Date : 2024-09-11 DOI: 10.1002/cepa.3087
Miroslav Sykora, Katerina Kreislova, Jana Markova
{"title":"Reliability-based Allowances of Corrosion Losses for Weathering Steel Bridges","authors":"Miroslav Sykora,&nbsp;Katerina Kreislova,&nbsp;Jana Markova","doi":"10.1002/cepa.3087","DOIUrl":"https://doi.org/10.1002/cepa.3087","url":null,"abstract":"<div>\u0000 \u0000 <p>Low demands on maintenance and 100% recyclability cause the growing popularity of weathering steel bridges worldwide. Recent experimental results made it possible to derive generic probabilistic models describing long-term corrosion losses for various types of weathering steels and exposures. In the contribution, these probabilistic models are applied in reliability assessment. For representative structural members and failure modes, the material allowances for the loss of thickness are derived to achieve a specified target reliability in exposures corresponding to Corrosivity Categories C2 and C3. Numerical analysis reveals that the allowances recommended by the ECCS guideline are generally conservative. For larger sections exposed in C2, a “no allowance” strategy might even be considered. For C3, design allowance of about 0.5-0.6 mm is then determined by the probabilistic approach.</p>\u0000 </div>","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"7 3-4","pages":"192-197"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cepa.3087","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142169990","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
Design and Analysis of Curved Steel Bridges Using 3D Shell Modelling 利用三维壳体建模设计和分析曲线钢桥
ce/papers Pub Date : 2024-09-11 DOI: 10.1002/cepa.3090
Paul Biju-Duval
{"title":"Design and Analysis of Curved Steel Bridges Using 3D Shell Modelling","authors":"Paul Biju-Duval","doi":"10.1002/cepa.3090","DOIUrl":"https://doi.org/10.1002/cepa.3090","url":null,"abstract":"<p>Steel bridge designers and erectors primarily rely on approximate methods, such as 1D line girder analyses and 2D grid analyses. For curved or skewed bridges, this can give erroneous indications of the structure's true behaviour. Refined methods of analysis, such as 3D shell modelling, aim to bring a significant change in the practice of bridge engineering. By moving the industry away from simplistic design assumptions, refined analysis methods lead to more accurate, less conservative results, which in turn brings true benefits such as improved structural safety and increased economy. In this paper, several case studies on curved plate girder and tub girder bridges are presented, which cover the full bridge life cycle, from erection of the steel structure and placement of the concrete deck, down to live load analyses using influence surfaces and load rating. The case studies will be modelled with mBrace3D, a dedicated FEA software for curved steel bridges.</p>","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"7 3-4","pages":"213-218"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142169999","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
Material selection for railroad bridge bearings to avoid brittle fracture 选择铁路桥梁支座材料以避免脆性断裂
ce/papers Pub Date : 2024-09-11 DOI: 10.1002/cepa.3080
Natalie Hoyer, Bertram Kühn
{"title":"Material selection for railroad bridge bearings to avoid brittle fracture","authors":"Natalie Hoyer,&nbsp;Bertram Kühn","doi":"10.1002/cepa.3080","DOIUrl":"https://doi.org/10.1002/cepa.3080","url":null,"abstract":"<p>Steel structures are typically engineered for the upper range of the steel toughness-temperature curve. To account for the reduction in toughness properties within the temperature transition range, additional safety assessments are necessary. These assessments rely on fracture mechanics considerations and enable the selection of an adequate steel material to prevent brittle fracture. Considering this context, recommendations were already put forth in 2011 to govern the appropriate choice of steel grades for bearing components. However, these recommendations are no longer entirely current in light of more recent findings. As a result, the German Centre for Rail Traffic Research has called a research project with the aim to formulate proposals to expand the regulatory framework related to suitable material selection, aimed at preventing brittle fracture in bridge bearings.</p>","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"7 3-4","pages":"157-160"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170074","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
Analysis of bow-string arch using geometric data from 3D scanning 利用三维扫描的几何数据分析弓弦弓形
ce/papers Pub Date : 2024-09-11 DOI: 10.1002/cepa.3082
Jaroslav Odrobiňák, Matúš Farbák, Jakub Chromčák, Jozef Gocál
{"title":"Analysis of bow-string arch using geometric data from 3D scanning","authors":"Jaroslav Odrobiňák,&nbsp;Matúš Farbák,&nbsp;Jakub Chromčák,&nbsp;Jozef Gocál","doi":"10.1002/cepa.3082","DOIUrl":"https://doi.org/10.1002/cepa.3082","url":null,"abstract":"<p>The utilization of currently measured geometric data for analysis of arch bridges and their stability is discussed. The presented contribution follows a set of research activities focused on real values of geometric imperfections of a steel bow-string arch bridge using 3D scanning. Relatively new railway arch bridge with span 124.8 m is discussed. Deviations from the theoretical design shape of the arch were recorded during the erection stage and after a proof-load test of the bridge, as well. Thus, it was possible to observe if and how the geometric imperfection changes during construction. Numerical models were created to perform geometrically nonlinear analysis. Both theoretical and real imperfections obtained by 3D scanning were considered in the analysis to compare and quantify the influence of the actual deformed shape. Finally, the obtained data, their comparison, the applicability of the presented methods, and possible pitfalls of the procedure are discussed.</p>","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"7 3-4","pages":"165-170"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170098","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
Railway bridge “Under Vyšehrad” in Prague, preparation of reconstruction 布拉格 "维谢赫拉德地下 "铁路桥，重建准备工作
ce/papers Pub Date : 2024-09-11 DOI: 10.1002/cepa.3057
Jiří Krouský
{"title":"Railway bridge “Under Vyšehrad” in Prague, preparation of reconstruction","authors":"Jiří Krouský","doi":"10.1002/cepa.3057","DOIUrl":"https://doi.org/10.1002/cepa.3057","url":null,"abstract":"<p>The railway bridge in Prague under Vyšehrad is a steel riveted structure with a lower deck from 1901 connecting the right and left banks of the Vltava River. The bridge is double-track and is located on a national track included in the TEN-T system. This is the transit corridor Nuremberg – Pilsen – Prague – Brno – (Vienna, Bratislava, Poland). It is therefore one of the busiest railway bridges in the Czech Republic. The bridge is a cultural monument.</p><p>At the moment, it is also the best-known and most discussed railway bridge in the Czech Republic. The bridge has been in service for more than 120 years and its expected lifespan has long been exceeded. The railway needs to increase the track capacity. At the same time, it is being discussed what to do with the heritage-protected bridge. Repair? Replace? Shift? These are the questions and challenges facing the Railway Administration.</p>","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"7 3-4","pages":"18-20"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170151","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
Tuned mass dampers - evaluation of the effect on two real footbridges 调谐质量阻尼器--评估对两座实际人行天桥的影响
ce/papers Pub Date : 2024-09-11 DOI: 10.1002/cepa.3073
Radim Nečas, Jiří Kučera, Jan Koláček, Kristína Bezručová
{"title":"Tuned mass dampers - evaluation of the effect on two real footbridges","authors":"Radim Nečas,&nbsp;Jiří Kučera,&nbsp;Jan Koláček,&nbsp;Kristína Bezručová","doi":"10.1002/cepa.3073","DOIUrl":"https://doi.org/10.1002/cepa.3073","url":null,"abstract":"<div>\u0000 \u0000 <p>Pedestrian comfort, subtle design, minimizing the number of fixed supports of the footbridge or material saving. These are the key arguments for integrating tuned mass dampers into the bridge project. The goal is to protect people and structure from vibrations and damage. The following paper presents findings from the design, production and tuning of mass dampers, their optimization possibilities and benefits for bridge engineering. The validity of damper design was verified on two footbridges in the Czech Republic and Slovakia. It concerns the footbridge over the Svitava River in Bílovice nad Svitavou and the footbridge over the high-speed road in Banská Bystrica. Dynamic tests including measurement were carried out on both bridges before and after the installation of the dampers. The dynamic monitoring of the compliance of modal parameters was conducted using operational modal analysis (OMA). The evaluation of the dynamic tests also includes the response to pedestrian effects (comfort criteria) and the determination of the logarithmic decrement of the damping.</p>\u0000 </div>","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"7 3-4","pages":"100-105"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cepa.3073","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170069","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
DYNAMIC BEHAVIOUR AND DAMPING OF STEEL RAILWAY BRIDGES AT A SPEED OF 200 KM/H 时速 200 公里铁路钢桥的动态特性和阻尼
ce/papers Pub Date : 2024-09-11 DOI: 10.1002/cepa.3091
Pavel Ryjáček, Michal Polák, Vojtěch Dynybyl, Jiří Litoš
{"title":"DYNAMIC BEHAVIOUR AND DAMPING OF STEEL RAILWAY BRIDGES AT A SPEED OF 200 KM/H","authors":"Pavel Ryjáček,&nbsp;Michal Polák,&nbsp;Vojtěch Dynybyl,&nbsp;Jiří Litoš","doi":"10.1002/cepa.3091","DOIUrl":"https://doi.org/10.1002/cepa.3091","url":null,"abstract":"<div>\u0000 \u0000 <p>The subject of the paper is the comprehensive information on experiments carried out on a group of railway bridges near Břeclav, Vranovice and Soběslav, covering filler beams, steel girder bridges and composite bridges. The subject was to determine the behavior of bridges at higher speeds and to determine the value of damping as a basis for the preparation of HSR lines in the Czech Republic.</p>\u0000 <p>This paper describes the structures investigated and recapitulates selected findings, particularly related to the damping. Also, the general findings from a number of tests focusing on damping are also given.</p>\u0000 </div>","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"7 3-4","pages":"111-114"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cepa.3091","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170071","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
INCREASING FATIGUE LIFE OF NEW WELDED AND REPARIED JOINTS BY HFMI TREATMENT 通过 HFMI 处理提高新焊接接头和修复接头的疲劳寿命
ce/papers Pub Date : 2024-09-11 DOI: 10.1002/cepa.3094
Jakub Štěpán, Pavel Ryjáček
{"title":"INCREASING FATIGUE LIFE OF NEW WELDED AND REPARIED JOINTS BY HFMI TREATMENT","authors":"Jakub Štěpán,&nbsp;Pavel Ryjáček","doi":"10.1002/cepa.3094","DOIUrl":"https://doi.org/10.1002/cepa.3094","url":null,"abstract":"<div>\u0000 \u0000 <p>There is a growing number of welded steel bridges in the world that are reaching the end of their design life. Repair of fatigue damage (cracks) or replacement with new modern designs is becoming an increasing issue. Fatigue damage is now one of the main design and construction risks associated with the construction of new dynamically stressed steel structures. Fatigue damage is now one of the main design and engineering risks associated with the construction of new dynamically stressed steel structures. Increasing fatigue life can be achieved by HFMI treatment that can be applied to new weld as well as existing welded joints. This paper presents the results of experiments focused on HFMI treatment to new and repaired butt welds of higher thicknesses.</p>\u0000 </div>","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"7 3-4","pages":"153-156"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cepa.3094","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170073","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
Steel Arch Structures with Prestressed Concrete Deck 带预应力混凝土桥面的钢拱形结构
ce/papers Pub Date : 2024-09-11 DOI: 10.1002/cepa.3077
Jiri Strasky
{"title":"Steel Arch Structures with Prestressed Concrete Deck","authors":"Jiri Strasky","doi":"10.1002/cepa.3077","DOIUrl":"https://doi.org/10.1002/cepa.3077","url":null,"abstract":"<p>Footbridges with prestressed concrete deck, which are suspended on steel arch ribs, are described in terms of the structural arrangement, static function and erection. These bridges create stiff structural systems which guarantee the bridges' favourable dynamic response. While steel arch ribs allow easy erections, the concrete deck guarantees structural integrity. The footbridges are structurally efficient, they are light and transparent, corresponds to the scale of the landscape and all structural members have human dimensions. They were erected with a minimum impact on the environment. Their structural arrangement is illustrated on examples of four bridges.</p>","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"7 3-4","pages":"132-137"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170076","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
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