IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures最新文献_第2页

Condition Assessment of Steel Riveted Roof of Heritage Building in Sofia, Bulgaria 保加利亚索非亚遗产建筑钢铆接屋面状态评估

IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.0884

D. Dakov, B. Belev

引用次数: 0

Stability & Resistance of Hybrid Glass Structures under Seismic & Temperature Loads 混合玻璃结构在地震和温度荷载下的稳定性和抗力

IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.1487

D. Achillopoulou, N. K. Stamataki

引用次数: 1

The New City Bridge in Drammen, Norway. Designing a new urban landmark for an extreme environment. 挪威德拉门的新城大桥。为极端环境设计一个新的城市地标。

IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.1257

Miguel Escallón, Mario Rando, Thor Olav Solbjør, B. Halaczek

{"title":"The New City Bridge in Drammen, Norway. Designing a new urban landmark for an extreme environment.","authors":"Miguel Escallón, Mario Rando, Thor Olav Solbjør, B. Halaczek","doi":"10.2749/prague.2022.1257","DOIUrl":"https://doi.org/10.2749/prague.2022.1257","url":null,"abstract":"Following a competitive tender in 2018, the City of Drammen, Norway, has commissioned a new bridge, which will replace the city bridge (Bybrua), an ageing structure across the river Drammenselva. Located at the heart of Drammen, the bridge will be a pivotal link in the local infrastructure network, improving connectivity for public transportation (bus lanes) and cycle networks while providing a safe and enjoyable route for pedestrians. Once finished, the bridge will significantly improve the quality of the public realm, providing direct access to the platforms of the local main station as well as tying into two new urban plazas at both ends of the bridge including the barrier free access to the re-developed riverbank. The design stage faced several technical challenges, including the spanning of a 170m-wide river with poor bedding conditions as well as the construction above live railway of the Drammen Station. Concerns over ice loading, temperature extremes and the impact of a marine climate had to be addressed and new concepts for pedestrian and road safety on deck were developed. Located in a prominent spot, great diligence has been given to developing a modern architectural language that is both elegant and functional and defines the bridge as a new landmark for the city. The paper explores the development of the design from concept to tender stage and discusses the technical and architectural challenges and how they have been addressed by the interdisciplinary team of engineers, architects, landscape architects and designers.","PeriodicalId":168532,"journal":{"name":"IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures","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":"125997446","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

Quasi-static load bearing behaviour of hybrid grouted joints 混合灌浆节点的准静态承载特性

IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.1132

Jakob Boretzki, M. Albiez, T. Ummenhofer

引用次数: 1

Strengthening of road composite bridge using Fe-SMA Fe-SMA加固道路复合桥梁

IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.0837

J. Vůjtěch, P. Ryjáček, E. Ghafoori, J. Matos

{"title":"Strengthening of road composite bridge using Fe-SMA","authors":"J. Vůjtěch, P. Ryjáček, E. Ghafoori, J. Matos","doi":"10.2749/prague.2022.0837","DOIUrl":"https://doi.org/10.2749/prague.2022.0837","url":null,"abstract":"Exceeding creep actions on newly built composite bridge in Karlovy Vary led to rapid repair works of the excessively deflected structure. Activation of retrofit prestressing system in confined places is usually a difficult task. Instead of space-demanding hydraulic actuators, prestressing system of thermally activated shape memory alloys was used under low filler beam bridge to act against the creep inflicted deflection. Method of thermal activation of Fe-SMA with use of heating ceramic pads with resistance wire was performed on all of 17 filler beams. This method was proven as most suitable for field activation in previous application. Strengthening was done in February 2021 without any intervention into the traffic on the bridge. It is the first permanent Fe-SMA application of its kind in the world. Wireless monitoring of the bridge started before the prestress activation and continued for several months. Static load test with use of 32-ton trucks was conducted. Based on the long-term monitoring, the relaxation of Fe-SMA is evaluated and compared with the results from the experimental analysis conducted in laboratory conditions on the same retrofit system.","PeriodicalId":168532,"journal":{"name":"IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures","volume":"207 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":"132207946","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

Improvements in chloride determination in reinforced concrete structures to find optimal time for remediation 改进钢筋混凝土结构中氯化物的测定方法，寻找最佳修复时间

IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.1942

F. Binder, S. Burtscher

{"title":"Improvements in chloride determination in reinforced concrete structures to find optimal time for remediation","authors":"F. Binder, S. Burtscher","doi":"10.2749/prague.2022.1942","DOIUrl":"https://doi.org/10.2749/prague.2022.1942","url":null,"abstract":"For a highway operator, such as ASFiNAG, bridges are very important assets. Despite all regular maintenance measures, these structures are strongly subjected to ageing and degradation, because of their exposure. Thus, leading to high maintenance expenditures. In Austria strong winters are obligatory and, therefore, de-icing measures are used for thawing. These substances contain chlorides, which are dissolved in water. Several elements of the bridges – especially the columns – are severely exposed. The exposure over many years leads to serious concrete degradation, depassivation of the rebars and pitting corrosion.The LA-ICP-MS (Laser Ablation Inductively Coupled Plasma Mass Spectrometry) method presented in this paper is a fast and reliable analysis strategy for determination of the chloride content in the cement phase of existing concrete structures. The high accuracy and depth resolution of the chloride profiles enable a more precise data assessment for forecast models.For this purpose, chloride profiles were taken from a retaining wall at different heights. The analysis shows significant deviations comparing traditional and new method concerning chloride contend. The challenges associated with such deviations in relation with the optimal time for remediation are shown in an example investigation.","PeriodicalId":168532,"journal":{"name":"IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures","volume":"40 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":"130033517","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

Use of fibre reinforced concrete for filler beam sections – potential for structural optimization 使用纤维增强混凝土填充梁段-结构优化的潜力

IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.0301

R. Zanon, M. Schäfer

引用次数: 0

Neby bru: one footway, three ways of sustainability Neby bru:一条路，三条路的可持续发展

IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.1025

Pablo Tarín, Gaute Mo

引用次数: 0

D4R7. Prievoz Interchange refurbishment at Bratislava D4R7。布拉迪斯拉发Prievoz立交翻新

IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.0578

Carlos Bajo Pavía, Luis Martín-Tereso López, José Vicente Candel Hernandis, W. Włodzimirski, Božena Morávková, Piotr Pykało, Ivan Vöröš, J. Simón-Talero, Ángel Carriazo, M. Kalný, Václav Kvasnička, Ján Kopčák

引用次数: 0

Rehabilitation and Strengthening of Bridges over Boa Vista River 博阿维斯塔河上桥梁的修复和加固

IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures Pub Date : 1900-01-01 DOI: 10.2749/prague.2022.1172

Marcelo Melo, João Luís Casagrande, Leonardo Patrício

引用次数: 0