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Preliminary design of a viaduct on new Highspeed line RS2 VRT Jižní Morava 新高速线路 RS2 VRT Jižní Morava 高架桥的初步设计
ce/papers Pub Date : 2024-09-11 DOI: 10.1002/cepa.3061
Samuel Franko, Martin Hukel
{"title":"Preliminary design of a viaduct on new Highspeed line RS2 VRT Jižní Morava","authors":"Samuel Franko,&nbsp;Martin Hukel","doi":"10.1002/cepa.3061","DOIUrl":"https://doi.org/10.1002/cepa.3061","url":null,"abstract":"<p>The newly proposed high-speed rail in Czech Republic creates a set of new challenges for engineers in design overall. In this case, the most significant challenge was to design a viaduct over several obstacles due to the crossing of Special Area of Conservation (SAC), part of Natura 2000. This aims to limit impacts in short-term, during construction and more importantly in the long term. Construction of the viaduct will mitigate an impact to the natural surrounding area, whilst allowing immigration of its natural habitats. Nevertheless, the viaduct design and operational speeds will reach 320 km/h with possible raising to 350 km/h limit, with minimal impact within the area.</p><p>Initial length of the viaduct was over 1 300 m and the main requirement given by an infrastructure manager was to design a viaduct without railway expansion joints. Due to such a long distance, the viaduct had to be separated into several dilatation segments in order to avoid the use of rail expansion joint. The most susceptible parts of SAC were in proximity of the river Šatava and surrounding wetlands. This area created an obstacle, which had to be crossed by a long span avoiding the implementation of bridge piers. Poor geological conditions close to the watercourse had to be taken into consideration for design of pier foundation, therefore the span had to be shortened to a compromised length.</p><p>The final design of the viaduct consists of 16 segments, of which 14 are continuous segments and 4 are single spans. Overall, there are 29 spans over the length of the viaduct. Construction method of incremental launching had been chosen to reduce the short-term impact in the SAC.</p>","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"7 3-4","pages":"38-43"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170158","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
Development of a lamella-model to evaluate stresses caused by hot asphalt installation 开发用于评估热沥青安装应力的薄片模型
ce/papers Pub Date : 2024-09-11 DOI: 10.1002/cepa.3064
Damian Händeler, Achim Geßler, Kevin Wolters, Markus Feldmann
{"title":"Development of a lamella-model to evaluate stresses caused by hot asphalt installation","authors":"Damian Händeler,&nbsp;Achim Geßler,&nbsp;Kevin Wolters,&nbsp;Markus Feldmann","doi":"10.1002/cepa.3064","DOIUrl":"https://doi.org/10.1002/cepa.3064","url":null,"abstract":"<div>\u0000 \u0000 <p>On road-bridges hot asphalt is installed to provide a level and waterproof surface. That wearing surface, however, needs occasional renewal. On a number of steel highway-bridges it has been observed that after such asphalt-renewal fatigue-cracks have increasingly occurred at the welds of orthotropic bridge-decks. The German Federal Highway Research Institute has assigned a research project to RWTH Aachen University to evaluate the response of steel-bridges to time- and location-dependent, nonlinear temperature profiles. Since FEM-software with the needed level of detailing could not provide solutions for long large-span bridges, a software-based lamella-model was developed. This model enables the partition of the bridge into rectangular beam-lamella, precisely considers the nonlinear temperature and calculates the inner forces and displacements along the bridge. This paper presents the theoretical background of the lamella-program as well as results calculated exemplary for a 742m-long German highway-bridge including validation with in situ temperature and strain measurements during asphalting.</p>\u0000 </div>","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"7 3-4","pages":"56-61"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cepa.3064","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170155","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
OA14 - BOWSTRING OF THE NEW RAILWAY LINE LUXEMBOURG-BETTEMBOURG – CONSTRUCTION AND SPECIAL DESIGN CHALLENGES FOR HANGERS OA14 - 卢森堡-贝敦堡新铁路线的弓弦 - 施工和吊架的特殊设计挑战
ce/papers Pub Date : 2024-09-11 DOI: 10.1002/cepa.3056
Patrick NOSBUSCH, Ettore SCIAN, Andrea DE CILLIA
{"title":"OA14 - BOWSTRING OF THE NEW RAILWAY LINE LUXEMBOURG-BETTEMBOURG – CONSTRUCTION AND SPECIAL DESIGN CHALLENGES FOR HANGERS","authors":"Patrick NOSBUSCH,&nbsp;Ettore SCIAN,&nbsp;Andrea DE CILLIA","doi":"10.1002/cepa.3056","DOIUrl":"https://doi.org/10.1002/cepa.3056","url":null,"abstract":"<p>The new railway line connecting Luxembourg and Bettembourg crosses the A3 highway at a steep angle (19.5°) with the bridge called OA14.</p><p>The designed bridge is a bowstring structure with a single span of 186.85 meters. The bridge deck consists of two lateral metal box girders acting as a chord. The deck is a transversal filler beam, with spherical voids and lightweight concrete to reduce the structure's weight.</p><p>The bridge features two inward-inclined arches at 9°, which are doubled and serve as trusses. This significantly increases the stiffness of the arch whilst keeping the silhouette elegant. The deck follows the curved track alignment, the arches remain straight. Two times 12 hangers connect the arches to the girders, they are made of CHS profiles of S450H quality. This article gives an overview of the structure and its construction. It then gives a more detailed insight in the design of the hangers, especially the hanger-girder connections.</p>","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"7 3-4","pages":"13-17"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170198","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
Design and assembly of a new extradosed bridge in Nuremberg 纽伦堡新引渡桥的设计与组装
ce/papers Pub Date : 2024-09-11 DOI: 10.1002/cepa.3058
Thomas Klähne, Mike Owusu-Yeboah, Matthias Weißbach
{"title":"Design and assembly of a new extradosed bridge in Nuremberg","authors":"Thomas Klähne,&nbsp;Mike Owusu-Yeboah,&nbsp;Matthias Weißbach","doi":"10.1002/cepa.3058","DOIUrl":"https://doi.org/10.1002/cepa.3058","url":null,"abstract":"<p>A ramp structure with a length of 588 m was planned in the area of the Nuremberg East interchange between the A9 and A6 highways. The bridge structure is an extradosed bridge, which represents an unusual technical and design solution for a ramp structure in Germany for reasons of maintaining traffic. The structure is preassembled in incremental sections, fitted with the cables and incrementally lengthwise inserted. In addition to the design and assembly, the article also reports on structural design aspects.</p>","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"7 3-4","pages":"21-26"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170152","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
Experimental and theoretical evaluation of axial forces in short steel ropes 短钢绳轴向力的实验和理论评估
ce/papers Pub Date : 2024-09-11 DOI: 10.1002/cepa.3066
Rudolf Ároch, Michal Kováč, Michal Venglár, Tomáš Klas
{"title":"Experimental and theoretical evaluation of axial forces in short steel ropes","authors":"Rudolf Ároch,&nbsp;Michal Kováč,&nbsp;Michal Venglár,&nbsp;Tomáš Klas","doi":"10.1002/cepa.3066","DOIUrl":"https://doi.org/10.1002/cepa.3066","url":null,"abstract":"<p>Assessing rope force in bridge structural health monitoring, particularly for shorter lengths, poses challenges. The vibration method, commonly utilized for taut strings, yields inaccurate results for short ropes due to neglecting bending stiffness. To address this, the differential equation of lateral vibration of a prismatic beam possessing bending stiffness EI, evenly distributed mass m under the tension force N is solved approximately and numerically using FEM for greater accuracy. Nonlinear fitting via the Gauss-Newton aids in refining results. Laboratory experiments, varying axial forces and rope characteristics, validated these methods, offering recommendations for improved accuracy.</p>","PeriodicalId":100223,"journal":{"name":"ce/papers","volume":"7 3-4","pages":"68-72"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170127","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
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
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