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IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures最新文献

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Monitoring and Assessment of Bridge Cable Stays Consisting of Bundles of Fully Locked Coil Ropes 由成束全锁卷绳组成的桥梁斜拉索的监测与评估
IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.0338
R. Ároch, M. Kovác, T. Klas, R. Štecák, M. Venglár
{"title":"Monitoring and Assessment of Bridge Cable Stays Consisting of Bundles of Fully Locked Coil Ropes","authors":"R. Ároch, M. Kovác, T. Klas, R. Štecák, M. Venglár","doi":"10.2749/prague.2022.0338","DOIUrl":"https://doi.org/10.2749/prague.2022.0338","url":null,"abstract":"The paper describes the health monitoring of the cables of the largest cable-stayed bridge in Slovakia. The bridge spans the Danube River and is located in Bratislava. It was opened for traffic in 1972. The bridge is known for the restaurant at the top of its inclined pylon. The cables consist of bundles of fully locked coil ropes.The vibration method was used to assess the forces and damping of the cables. The results were compared with the topographical measurement method. The distribution of the total force in the stays among the individual fully locked coil ropes was also investigated by the vibration method. The measurement was performed in the anchor chambers in the bridge beam where the bundles of ropes spread out. Due to the short lengths of the ropes, the influence of their bending stiffness had to be considered. A non-linear fitting procedure with minimising the sum of squares was used.A set of up to nine accelerometers was used to measure the vibration of individual ropes. A study on the number of necessary considered mode shapes was also performed. Ambient vibrations were used for the operational modal analysis and impact loads coming from a hammer were used for excitation as well.","PeriodicalId":168532,"journal":{"name":"IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures","volume":"121 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":"123213558","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 Database on Resistance of Hybrid Joints with High- strength Bolts and Epoxy Adhesive 高强度螺栓与环氧胶粘剂混合连接阻力试验数据库
IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.0165
H. Moriyama, Takashi Yamaguchi
{"title":"Experimental Database on Resistance of Hybrid Joints with High- strength Bolts and Epoxy Adhesive","authors":"H. Moriyama, Takashi Yamaguchi","doi":"10.2749/prague.2022.0165","DOIUrl":"https://doi.org/10.2749/prague.2022.0165","url":null,"abstract":"High-strength frictional bolted joints is a usual connecting method of steel members at a construction site. Epoxy putty is also used to adjust the unevenness of corroded member’s surface in a repair with bolted connections. Thus, the repair is often conducted by hybrid joint with epoxy adhesives and high-strength bolts. The conversion to hybrid joints is also effective in terms of the performance enhancement. Therefore, this paper surveys experimental data of the hybrid joints in Japan to summarize essential pieces of information. Surveyed results show that the relationships between the average shear strength of hybrid joints and average contact pressure on the faying surface indicates a strong correlation. Therefore, hybrid joints have the strength characteristic of adhesive joints rather than frictional bolted joints. Moreover, approximate equations which can evaluate the peeing resistance of the joint composed of several bolts was proposed.","PeriodicalId":168532,"journal":{"name":"IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures","volume":"1 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":"125494294","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 New Storstrøm Bridge - Construction Tolerances and Precast Structures Installation Challenges 新Storstrøm桥-施工公差和预制结构安装挑战
IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.0096
Marco Raimondi, Alessandro Toscan
{"title":"The New Storstrøm Bridge - Construction Tolerances and Precast Structures Installation Challenges","authors":"Marco Raimondi, Alessandro Toscan","doi":"10.2749/prague.2022.0096","DOIUrl":"https://doi.org/10.2749/prague.2022.0096","url":null,"abstract":"The construction of the Storstrøm Bridge faced and is facing a number of challenges, to ensure the alignment with design assumptions and project requirements. The main constraints related to tolerances and quality requirement are hereby described together with the strategy implemented to execute works. From the positioning of precast foundations to the erection of the girders a number of constraints pose a challenge to the general contractor (SBJV) since their fulfillment is crucial to ensure that the bridge performance standards are met, the construction program is followed and works disruption does not occur. The geotechnical settlements represent a particular challenge since the natural uncertainties related to their calculation require SBJV to adopt solutions that can accommodate any deviation from the predicted ones. In light of the above, a crucial role is played by advanced planning risk management and monitoring during construction operations.","PeriodicalId":168532,"journal":{"name":"IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures","volume":"27 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":"124718185","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
Advanced analysis of a pedestrian bridge and considerations on crowd-structure interaction 人行天桥的高级分析及对人群-结构相互作用的考虑
IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.1427
Antonio De Luca, Scott Lomax, Marguerite Pinto
{"title":"Advanced analysis of a pedestrian bridge and considerations on crowd-structure interaction","authors":"Antonio De Luca, Scott Lomax, Marguerite Pinto","doi":"10.2749/prague.2022.1427","DOIUrl":"https://doi.org/10.2749/prague.2022.1427","url":null,"abstract":"Pedestrian bridges, grandstands, and other long-span structures may be subjected to crowd loading. Crowds have the dual effect to produce large forces and alter the structure’s modal properties and damping. Vibration testing of full-scale structures allows the verification of the modelling assumptions and design criteria.This paper discusses the case study of a pedestrian bridge structure subjected to crowd loading. The results of the design finite element model of the bridge and the bridge performance were validated through field testing. The theoretical effects of crowds were analysed and compared to the experimental test data.","PeriodicalId":168532,"journal":{"name":"IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures","volume":"27 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":"120965361","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
System Identification and Finite Element Model Updating of a Multi- Span Railway Bridge with Uncertain Boundary Conditions 边界条件不确定的多跨铁路桥梁系统辨识及有限元模型修正
IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.0491
Mathias Torp, Jakob Braaten Johnsen, E. Erduran
{"title":"System Identification and Finite Element Model Updating of a Multi- Span Railway Bridge with Uncertain Boundary Conditions","authors":"Mathias Torp, Jakob Braaten Johnsen, E. Erduran","doi":"10.2749/prague.2022.0491","DOIUrl":"https://doi.org/10.2749/prague.2022.0491","url":null,"abstract":"This study presents the implementation of a sensitivity-based finite element model updating process on a 48.6 m long, multi-span, reinforced concrete railway bridge located in Stange, Norway. Lack of documentation and uncertainties surrounding the boundary conditions combined with unrealistic dynamic response obtained from dynamic analysis using a finite element model based on the design drawings prompted the need for monitoring of the vibrations on the bridge followed by identification of modal properties and development of an updated finite element model which can more accurately represent the as-built structure.For this purpose, the railway bridge was instrumented and vibration data from operational conditions was collected. Using the covariance- driven stochastic subspace identification method, the modal properties of the bridge were identified from the recorded vibrations. Comparison of the identified mode shapes with those obtained from the documentation-based initial finite element model showed significant discrepancies depicting the shortcomings of the initial model. A comprehensive sensitivity analysis and iterative finite element model updating was undertaken with a specific focus on the boundary conditions to obtain a FE model that can replicate the observed behaviour. As a result, the correlation between the observed and computed mode shapes were increased to 89% from 61% and the average error in the first four natural frequencies was reduced to 10% from 23%. Comparison of the initial and updated finite element models highlighted the significance of the boundary conditions on the dynamic behaviour of the bridge.","PeriodicalId":168532,"journal":{"name":"IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures","volume":"69 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120979446","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
Addressing Design and Construction Challenges for a Complex Elevated Interchange over the Sea 解决海上复杂高架立交的设计和施工挑战
IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.1535
M. Tapley, Lemuel Leung, P. Chan
{"title":"Addressing Design and Construction Challenges for a Complex Elevated Interchange over the Sea","authors":"M. Tapley, Lemuel Leung, P. Chan","doi":"10.2749/prague.2022.1535","DOIUrl":"https://doi.org/10.2749/prague.2022.1535","url":null,"abstract":"As part of the strategic road network in Hong Kong, an express link will connect East Kowloon and the new town of Tseung Kwan O. Part of this link includes an elevated interchange over the sea with seven post- tensioned bridges. The series of balanced cantilever bridges within this marine interchange run in a spaghetti junction manner around the main line viaduct, which comprises two parallel bridges connected at each pier with a cast in-situ diaphragm.This paper presents the project’s unprecedented design challenges, along with the methods used to construct the complex viaducts whilst ensuring a safe construction environment.","PeriodicalId":168532,"journal":{"name":"IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures","volume":"43 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":"133852409","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 New Little Belt Bridge – the role of the physical model and it’s digital twin 新的小带桥——物理模型的作用和它的数字双胞胎
IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.0702
Baris Wenzel, Eberhard Möller, Benjamin Schmid, C. Weber, G. Morgenthal
{"title":"The New Little Belt Bridge – the role of the physical model and it’s digital twin","authors":"Baris Wenzel, Eberhard Möller, Benjamin Schmid, C. Weber, G. Morgenthal","doi":"10.2749/prague.2022.0702","DOIUrl":"https://doi.org/10.2749/prague.2022.0702","url":null,"abstract":"The New Little Belt Bridge, designed by the consulting engineers Christian Ostenfeld and Wriborg Jønson, was to be Denmark's first suspension bridge. The construction of this Danish piece of engineering history took place between 1965 and 1970 and could only succeed with the help of tests on physical models. Most of the physical models have disappeared, only the three-dimensional dynamic model of the bridge has survived. This paper looks at the question which role the surviving and other models played in the planning process. The model still existing is a store of knowledge of engineering practice and shall be recorded and evaluated as one of the last witnesses of model statics. Therefore, the authors will create a digital twin of the model to examine aspects like boundary conditions, structural parameters of all bridge components and the well-documented research results.","PeriodicalId":168532,"journal":{"name":"IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures","volume":"3 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":"131091940","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: 1
Fatigue behaviour of tubular bracings in steel and composite bridges 钢和复合桥梁管状支撑的疲劳性能
IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.0524
L. Gölz, U. Kuhlmann
{"title":"Fatigue behaviour of tubular bracings in steel and composite bridges","authors":"L. Gölz, U. Kuhlmann","doi":"10.2749/prague.2022.0524","DOIUrl":"https://doi.org/10.2749/prague.2022.0524","url":null,"abstract":"In steel and composite bridges, a practice-oriented and fatigue-suitable design is crucial for sustainable and economical infrastructures. The welded joints of slitted tubular elements, especially of circular hollow sections with gusset plates for cross girder bracings or box girder diaphragms, are critically assessed in view of their fatigue behaviour. The gusset plate welding at the end of the slit is the critical fatigue spot. For the currently various design variants used in bridge construction with basically different notches, there is no clear rule given regarding the detail category by the standards EN 1993-2 or EN 1993-1-9. This paper summarises the experimental und numerical results of a research project on three different fatigue design solutions for tubular bracings in steel and composite bridges. An overview of the practice-oriented design, the benefits for the execution and manufacturing as well as the proposals for prEN 1993-1-9 and design recommendations are given.","PeriodicalId":168532,"journal":{"name":"IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures","volume":"16 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":"133500650","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
Fatigue behaviour of cracked concrete decks under cyclic shear loading 循环剪切荷载作用下开裂混凝土板的疲劳特性
IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.0507
Lena Stempniewski, U. Kuhlmann
{"title":"Fatigue behaviour of cracked concrete decks under cyclic shear loading","authors":"Lena Stempniewski, U. Kuhlmann","doi":"10.2749/prague.2022.0507","DOIUrl":"https://doi.org/10.2749/prague.2022.0507","url":null,"abstract":"In large steel-concrete composite road bridges cracking occurs in the concrete deck due to tension resulting from negative bending moments at the support area. Simultaneously, high wheel loads from the traffic act as cyclic shear loading on the concrete. As a result, tension forces coming from the global load-carrying effect need to be superimposed with local vertical forces due to the wheel loads acting as cyclic shear loading. In this paper, the results of experimental investigations regarding the fatigue strength of the cracked concrete deck in tension are discussed. Furthermore, the effect of the longitudinal reinforcement ratio and the height of the tensile stress is pointed out.","PeriodicalId":168532,"journal":{"name":"IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures","volume":"32 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":"132894391","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
Short span UHPFRC railway bridge in Switzerland - from design to implementation 瑞士短跨UHPFRC铁路桥——从设计到实施
IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.0277
Ngoc Thanh Trinh, N. Bertola, Enrique García, E. Brühwiler
{"title":"Short span UHPFRC railway bridge in Switzerland - from design to implementation","authors":"Ngoc Thanh Trinh, N. Bertola, Enrique García, E. Brühwiler","doi":"10.2749/prague.2022.0277","DOIUrl":"https://doi.org/10.2749/prague.2022.0277","url":null,"abstract":"This paper presents the design and construction of the Aiguillon railway bridge in Switzerland, one of the first railway bridges completely made of Ultra-High-Performance Fiber-Reinforced Cementitious Composite (UHPFRC). The length and width of the trough girder are respectively 6.6 m and 5.7 m. It is designed for a narrow-gauge track and two walkways. The trough is composed of two prefabricated elements in UHPFRC with steel reinforcement bars. These elements are first built in the plant and then are assembled on site by a longitudinal cast-in-place joint.The challenges and the experiences in this project are discussed and analysed in view of future projects. Furthermore, the full-scale suitability tests to validate the joint between the two prefabricated elements are described. The test results of the structural resistance of the joints are in good agreement with analytical results.","PeriodicalId":168532,"journal":{"name":"IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures","volume":"29 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114090604","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: 1
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