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IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs最新文献

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Study on temperature field effects on RC high-pier bridge RC高墩桥梁温度场效应研究
IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs Pub Date : 1900-01-01 DOI: 10.2749/ghent.2021.0376
Zhongjie Wang, Shaoqiang Zhang, Y. Ou, Gaojie Zhong, Ao Wang, Zongkai Zhang, Limin Sun
{"title":"Study on temperature field effects on RC high-pier bridge","authors":"Zhongjie Wang, Shaoqiang Zhang, Y. Ou, Gaojie Zhong, Ao Wang, Zongkai Zhang, Limin Sun","doi":"10.2749/ghent.2021.0376","DOIUrl":"https://doi.org/10.2749/ghent.2021.0376","url":null,"abstract":"Temperature is one of the essential factors that cause dynamic characteristics changes in concrete bridges. However, the study of temperature-induced structural frequency changes relies on a large number of measured data to establish a frequency-temperature mathematical model. The selection of temperature variables is arbitrary. This paper takes a concrete high-pier rigid-framed bridge under construction in China as the research object. Based on the continuous 120-day measured weather data at the bridge site, the finite element method (FEM) is used to simulate the bridge's temperature and frequency history without considering the crack and other damage conditions. A regression analysis model of frequency and temperature variables was established. The study found that the selection of temperature variables and mathematical models influences the frequency-temperature mathematical relationship; for high-pier bridges. Establishing a multiple linear regression model with air temperature and point temperature of the main girder and piers as variables can obtain an ideal fitting result.","PeriodicalId":162435,"journal":{"name":"IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs","volume":"12 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":"127528092","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
Investigations on the buckling behaviour due to different launching bearings 不同发射轴承的屈曲特性研究
IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs Pub Date : 1900-01-01 DOI: 10.2749/ghent.2021.1974
N. Maier, Martin Mensinger, Enea Tallushi, Joseph Ndogmo
{"title":"Investigations on the buckling behaviour due to different launching bearings","authors":"N. Maier, Martin Mensinger, Enea Tallushi, Joseph Ndogmo","doi":"10.2749/ghent.2021.1974","DOIUrl":"https://doi.org/10.2749/ghent.2021.1974","url":null,"abstract":"In general, today two types of launching bearings are used in the construction of large steel and steel concrete composite bridges, sliding rockers and systems with hydraulic bearings. During incremental launching, the center of the webs of the superstructure is not perfectly in line with the center of the launching bearings due to unavoidable tolerances. The advantages and disadvantages of the respective systems are under discussion. At the Technical University Munich, large-scale buckling tests were carried out on longitudinally stiffened plates under biaxial stresses with different types of launching bearings and eccentric load introduction. In this paper the test results as well as differences of the respective systems are presented. Based on experimental results, a numerical model is validated. The test results as well as the results from the validated numerical model demonstrate the influence on the buckling behaviour from different types of launching bearings.","PeriodicalId":162435,"journal":{"name":"IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs","volume":"101 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":"123246332","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
Dynamic response under pedestrian loading of the footbridge “La Belle Liégeoise” “La Belle lisamgeoise”行人桥在行人荷载下的动力响应
IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs Pub Date : 1900-01-01 DOI: 10.2749/ghent.2021.1667
F. Gens, Yves Duchêne, V. Goyet
{"title":"Dynamic response under pedestrian loading of the footbridge “La Belle Liégeoise”","authors":"F. Gens, Yves Duchêne, V. Goyet","doi":"10.2749/ghent.2021.1667","DOIUrl":"https://doi.org/10.2749/ghent.2021.1667","url":null,"abstract":"The particularly slender type of the footbridge \"La Belle Liégeoise\" is very sensitive to the pedestrian actions. A few days after the opening of the bridge, at the end of a huge spectacle organized in the Boverie park, some thousands of people took, in one way, the footbridge to reach the city. At this time, a lateral pitching of the suspended part of the structure started, making the crossing uncomfortable for users although this vibration frequency is outside the critical window defined by the SETRA guide.The purpose of this paper is to detail the sizing of the seven tuned mass dampers equipping the structure to meet the code’s requirements and to explain studies carried out by Greisch to analyse causes of these large vibrations and propose solutions to solve the problem, or even to anticipate it for future works.","PeriodicalId":162435,"journal":{"name":"IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs","volume":"30 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":"122903867","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
Equivalent nosing force for a steel railway bridge based on in situ measurements 基于现场测量的铁路桥等效鼻翼力
IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs Pub Date : 1900-01-01 DOI: 10.2749/ghent.2021.1273
L. Georgiev, Lyubomir A. Zdravkov, V. Tanev, M. Lepoev
{"title":"Equivalent nosing force for a steel railway bridge based on in situ measurements","authors":"L. Georgiev, Lyubomir A. Zdravkov, V. Tanev, M. Lepoev","doi":"10.2749/ghent.2021.1273","DOIUrl":"https://doi.org/10.2749/ghent.2021.1273","url":null,"abstract":"The weight and design speed of the railway vehicles increases in time. As a result, the values of design loads grow up. In old Bulgarian standard [1] the equivalent nosing force is prescribed as 60kN. In the present EN1991-2 [2] this value is 100kN. Meanwhile, a significant part of the very old bridges is not designed for nosing forces. In cases of long span between cross girders of the “open type” deck and lack of nosing braces, the load bearing capacity of longitudinal girders, concerning out of plane bending moments due to nosing forces, is insufficient. To investigate the value of equivalent nosing force are provided “in situ” measurements on the longitudinal girders of “open type” deck of a steel riveted railway bridge in exploitation in the Republic of Bulgaria. The strains and horizontal linear deformations are measured in the midspan of the longitudinal beams for real trains. The equivalent nosing force is calculated using developed procedures.","PeriodicalId":162435,"journal":{"name":"IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs","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":"128997260","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
The Arc Majeur, when art challenges technology 当艺术挑战技术时，艺术大师
IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs Pub Date : 1900-01-01 DOI: 10.2749/ghent.2021.1658
Yves Duchêne, Sébastien Seret, V. Goyet, J. Ligot, Edouard Verstraelen, Arnaud Philippart
{"title":"The Arc Majeur, when art challenges technology","authors":"Yves Duchêne, Sébastien Seret, V. Goyet, J. Ligot, Edouard Verstraelen, Arnaud Philippart","doi":"10.2749/ghent.2021.1658","DOIUrl":"https://doi.org/10.2749/ghent.2021.1658","url":null,"abstract":"The “Arc Majeur” is a curved metal boxes with a square section of 2,25 m culminating about 60 m high. The square section of the arc is likely to produce vortex-induced vibrations in the direction perpendicular to that of the wind. The main arc is therefore equipped with a \"Tuned Mass Damper\" (TMD).In the case of the “Arc Majeur”, the proper functioning of the damper is essential because the amplitudes of vibrations reached under vortex-induced vibrations would cause the arc to break. A monitoring system continuously records the vibrations of both the damper and the structure and transmits alerts in the event of a malfunction.A live post processing has been developed to verify that the damper functions as intended, and that the overall vibration amplitude remains small. The results of the first year of monitoring are presented in this paper.","PeriodicalId":162435,"journal":{"name":"IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs","volume":"05 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":"130587402","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
Climate impact estimation – from feasibility study to handover 气候影响评估——从可行性研究到交接
IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs Pub Date : 1900-01-01 DOI: 10.2749/ghent.2021.0622
Johan Lagerkvist, P. Simonsson, M. Karlsson, R. Rempling, P. Bosch-Sijtsema, O. Lædre
{"title":"Climate impact estimation – from feasibility study to handover","authors":"Johan Lagerkvist, P. Simonsson, M. Karlsson, R. Rempling, P. Bosch-Sijtsema, O. Lædre","doi":"10.2749/ghent.2021.0622","DOIUrl":"https://doi.org/10.2749/ghent.2021.0622","url":null,"abstract":"Responsible for 1/5 of the total CO2-equivalents emissions and 50% of the materials resources used globally, the construction industry plays a vital role for a sustainable future. All parties in the construction industry address the challenge from their perspective and national transport administrations are often considered as the driver toward a fossil free industry. In this study, three Swedish infrastructure projects are studied by means of interviews, focusing on the usage and acceptance of the recently implemented climate estimation process. From the interviews, it is found that currently there is a lack of knowledge regarding climate estimations among bridge and environmental specialists as well as project managers. To address this challenge, it is important to educate the industry and increase the knowledge about climate estimations and declarations as well as inform which actions have the largest impact to reduce the CO2-equivalents emissions.","PeriodicalId":162435,"journal":{"name":"IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs","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":"124195476","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
Characterization of operational vibrations of highway bridges Via Lidar 高速公路桥梁运行振动的激光雷达表征
IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs Pub Date : 1900-01-01 DOI: 10.2749/ghent.2021.0412
Adriana Trias
{"title":"Characterization of operational vibrations of highway bridges Via Lidar","authors":"Adriana Trias","doi":"10.2749/ghent.2021.0412","DOIUrl":"https://doi.org/10.2749/ghent.2021.0412","url":null,"abstract":"During the examination of data obtained from scanning an operational steel girder bridge, local ripples were noted in horizontal elements that were expected to be planar in nature (such as girder flanges). It was hypothesized that these ripples are a result of the bridge vibrating under truck traffic. The objective of this paper is to examine this hypothesis through the use of data obtained from an operating highway bridge together with the use of numerical and physical models. After analyzing the data, by estimating the distance between the peak of these ripples (and translating this into time using the data acquisition metrics) the frequency of the vibrating object can be estimated. For the operating bridge and physical model employed in this research, the natural frequencies were estimated within 2% to 10% and 0,22% to 5%, respectively.","PeriodicalId":162435,"journal":{"name":"IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs","volume":"329 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":"123204713","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
Slussen – the lock of Stockholm Slussen——斯德哥尔摩之锁
IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs Pub Date : 1900-01-01 DOI: 10.2749/ghent.2021.1882
D. Svensson, V. Vestman, P. Collin
{"title":"Slussen – the lock of Stockholm","authors":"D. Svensson, V. Vestman, P. Collin","doi":"10.2749/ghent.2021.1882","DOIUrl":"https://doi.org/10.2749/ghent.2021.1882","url":null,"abstract":"Slussen is situated in the inner city of Stockholm just south of the world heritage site Gamla Stan and the royal castle. This historical site and also second biggest traffic and transportation hub in Stockholm is at the moment undergoing a complete refurbishment due to new demands and requirements and due to the fact that the former traffic plant was in a very bad shape with severe settlements and outworn concrete structures. The old traffic structure from the 1930´s is replaced by a modern urban space and transportation node designed by Foster + Partner and Berg arkitekter, adopted to demands and requirements of the future i.e. increased capacity for pedestrians and cyclists, heavily increased discharge capacity for Lake Mälaren, attractive areas for the public close to the water and several restaurants and cafés.This mega project (€ 1.4 Billion) cannot be described completely in a single paper so therefore two objects of special technical interest have been chosen and are described below: the water regulation system as well as the unique 3.400 Tons steel bridge, transported in one piece from China.","PeriodicalId":162435,"journal":{"name":"IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs","volume":"8 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120899505","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
Condition assessment of in situ elastomeric bearings 原位弹性轴承状态评估
IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs Pub Date : 1900-01-01 DOI: 10.2749/ghent.2021.0305
Edoardo Rossi, M. D’Amato, R. Gigliotti, M. Sebastiani
{"title":"Condition assessment of in situ elastomeric bearings","authors":"Edoardo Rossi, M. D’Amato, R. Gigliotti, M. Sebastiani","doi":"10.2749/ghent.2021.0305","DOIUrl":"https://doi.org/10.2749/ghent.2021.0305","url":null,"abstract":"Elastomeric bearings used as seismic isolation devices are key elements in the protection of constructions against earthquakes. They enable structures to exhibit very high performances when subject to extreme events, preventing damage both to structural and non-structural components. Their characteristics, however, are prone to change with time due to long term effects such as aging. Regular inspection and monitoring of their state are thus fundamental activities needed to ensure the required performances. The present work reviews the most common strategies adopted for such purpose, including visual inspections, Operational Modal Analysis (OMA), and quick release tests. An innovative characterisation method is also presented. Such method, with the use of a nanoindenter, enables testing of a small rubber sample (3 mm in diameter) cored from a device. Its suitability is confirmed through a comparison of the same device tested in a traditional setup.","PeriodicalId":162435,"journal":{"name":"IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs","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":"114751352","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
Using movable modular grandstands in large sports stadia 在大型体育场馆使用可移动的模块化看台
IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs Pub Date : 1900-01-01 DOI: 10.2749/ghent.2021.1323
G. V. Staen, A. Outtier, H. Backer
{"title":"Using movable modular grandstands in large sports stadia","authors":"G. V. Staen, A. Outtier, H. Backer","doi":"10.2749/ghent.2021.1323","DOIUrl":"https://doi.org/10.2749/ghent.2021.1323","url":null,"abstract":"The King Baudouin Stadium in Brussels is for many years the national stadium for football and athletics of Belgium. Being built in 1930 and renovated in 1995, one can image the stadium is outdated and not conform the current safety regulation. Since building a completely new stadium brought too many complexities with it, the latest idea is to renovate the current stadium. A major point of attention is the fan experience in the stadium, which is hard to achieve during football games when a running track is around the pitch. Therefore, a hybrid stadium with modular seats is suggested. It allows to modify the stadium in an ideal way for each event. Two different systems are worked out to move the stands, due to structural and financial considerations. One is based on the use of air cushions, while the other system makes use of cantilever beams. For both systems, it is important to protect the running track, when the stands are in football mode. This modular system creates a lot of extra space in the stadium and will enhance the atmosphere in the arena according to each type of event.","PeriodicalId":162435,"journal":{"name":"IABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs","volume":"22 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":"127792497","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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