Proceedings of the Institution of Civil Engineers - Bridge Engineering最新文献_第2页

An update on bridge carbon footprint data 桥梁碳足迹数据的更新

Proceedings of the Institution of Civil Engineers - Bridge Engineering Pub Date : 2024-02-26 DOI: 10.1680/jbren.23.00032

David Collings, Spandan Murthy

引用次数: 0

Bridges damaged during the 2019 flood in Poldokhtar toward flood hazard resilient bridges 波尔多克塔尔市在 2019 年洪灾中受损的桥梁，走向抗洪桥梁

Proceedings of the Institution of Civil Engineers - Bridge Engineering Pub Date : 2024-01-30 DOI: 10.1680/jbren.22.00050

Saman Mansouri, Majid Pouraminian, E. N. Farsangi

{"title":"Bridges damaged during the 2019 flood in Poldokhtar toward flood hazard resilient bridges","authors":"Saman Mansouri, Majid Pouraminian, E. N. Farsangi","doi":"10.1680/jbren.22.00050","DOIUrl":"https://doi.org/10.1680/jbren.22.00050","url":null,"abstract":"Bridges are among the most vital parts of infrastructure networks in every country. Natural hazards such as floods and earthquakes have seriously damaged these structures in the past. Engineering communities have always faced challenges with these structures against floods. Today, the world faces climate change. Due to this phenomenon, severe floods have increased all over the world. This issue shows the possibility of significant bridge damage due to floods and demonstrates the importance of studying bridge performance under flood hazards. The Poldokhtar flood of 2019 in Iran was one of the most destructive floods in the last decade. The present research reviewed the performance of 14 bridges during the Poldokhtar flood and outlined the damage through a field investigation. Therefore, this paper aims to show the different reasons and scenarios for the destruction of different types of bridges during floods. These reasons and scenarios were prepared based on visual inspection and engineering judgment. Results emphasize the need to estimate bridge vulnerability and recommend procedures to prevent bridge destruction. They also recommend methods to retrofit existing bridges, and design bridges that are a major step toward flood-hazard resilient bridges.","PeriodicalId":515764,"journal":{"name":"Proceedings of the Institution of Civil Engineers - Bridge Engineering","volume":"139 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140481354","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

Modular by necessity - Bracklinn falls footbridge 模块化的必要性 - Bracklinn 瀑布人行桥

Proceedings of the Institution of Civil Engineers - Bridge Engineering Pub Date : 2024-01-21 DOI: 10.1680/jbren.23.00016

David Knight, Keith Brownlie, James Marks, Murray McKellar, Danny Boothman

{"title":"Modular by necessity - Bracklinn falls footbridge","authors":"David Knight, Keith Brownlie, James Marks, Murray McKellar, Danny Boothman","doi":"10.1680/jbren.23.00016","DOIUrl":"https://doi.org/10.1680/jbren.23.00016","url":null,"abstract":"Bracklinn Falls is situated in a gorge surrounded by ancient woodland within the Loch Lomond and the Trossachs National Park. The park authority required a replacement footbridge to cross the gorge and to provide views of the falls. However, access for construction plant and materials was extremely difficult, with the sole access via a steep and sharp cornered path. The construction and access constraints drove the development of a new modular system and governed the structural and aesthetic design for the new footbridge. The resulting structure consists of perforated panels, formed from single sheets of weathering steel folded into a z-shape. - These panels were bolted to cross frames and assembled to create a half through beam that spans 21.4m. The scheme achieved an A+ rating under the “Structural Carbon for Bridges” (SCORBs) system (Archer and Green 2021). The structure was assembled bay-by-bay and push launched along a set of temporary rails, before being jacked onto the permanent bearings. By using a folding process, the modular system minimised welding and hence fabrication time. The system is in the process of being developed for repeated use at other locations, and forms an attractive “flat-packed” modular alternative for difficult to access locations.","PeriodicalId":515764,"journal":{"name":"Proceedings of the Institution of Civil Engineers - Bridge Engineering","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140501485","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

Investigating climate change effects on bridges and tunnels 调查气候变化对桥梁和隧道的影响

Proceedings of the Institution of Civil Engineers - Bridge Engineering Pub Date : 2024-01-19 DOI: 10.1680/jbren.23.00024

David Collings

{"title":"Investigating climate change effects on bridges and tunnels","authors":"David Collings","doi":"10.1680/jbren.23.00024","DOIUrl":"https://doi.org/10.1680/jbren.23.00024","url":null,"abstract":"The earth's climate is changing, partly from a continued natural warming since the last ice age and partly man made. The changing climate with resulting more extreme weather events is likely to impact bridges and other long life infrastructure assets. This research considers the broad effects of climate change on the load effects, load combinations and material properties of bridges and tunnels. It discusses effects such as, temperature, fire, storminess, precipitation, snow, ice, wind, sea levels and acidity as they affect bridges. The uncertainty of the data in probability and magnitude of extreme events on these climate effects is noted and discussed in relation to resilience. It considers specific examples of where climate change may affect bridges and tunnels and where further research is required. A risk assessment of the likelihood and impact of climate change is presented to quantify the effects on bridges and tunnels, to support design or asset management decisions. The work is primarily based on British and North European data, but data from other parts of the world are also considered. Current code and standard provisions for design and assessment are reviewed in relation to climate change and resilience, recommendations are outlined. Asset or region specific risk assessments using the methods of this research are recommended to be carried out.","PeriodicalId":515764,"journal":{"name":"Proceedings of the Institution of Civil Engineers - Bridge Engineering","volume":"3 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139525738","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 impact of autonomous vehicles on the performance of steel bridge deck pavement 自动驾驶车辆对钢质桥面铺装性能的影响

Proceedings of the Institution of Civil Engineers - Bridge Engineering Pub Date : 2024-01-19 DOI: 10.1680/jbren.23.00038

Kaidi Liang, Jikai Zhu, Zhenning Qian, Wenyuan Yang

{"title":"The impact of autonomous vehicles on the performance of steel bridge deck pavement","authors":"Kaidi Liang, Jikai Zhu, Zhenning Qian, Wenyuan Yang","doi":"10.1680/jbren.23.00038","DOIUrl":"https://doi.org/10.1680/jbren.23.00038","url":null,"abstract":"The widespread application of autonomous driving technology has become a prominent trend in the transportation industry. The purpose of this study is to investigate the impact of the lateral distribution pattern of autonomous vehicles on steel bridge deck pavement, aiming to provide reliable theoretical support for future bridge deck pavement management and operation. This article establishes a mixed traffic flow lateral distribution model and utilizes the Nanjing Yangtze River Forth Bridge as a case study. A corresponding finite element model is constructed, and ABAQUS finite element software is employed to analyze the rutting depth under different scenarios. The simulation results demonstrate that, under the zero-distribution mode, a rational layout of autonomous vehicles can significantly alleviate rut formation. Conversely, the unreasonable layout approach will reduce the service life of bridge deck pavement. When comparing the lateral distribution patterns of different vehicles, both the normal distribution and uniform distribution patterns exhibit positive effects on bridge deck paving. However, there is no significant difference in the magnitude of this positive impact between the two modes. This research not only fills the gap in the study of autonomous vehicle impact on bridge deck pavement but also proposes management methods for autonomous vehicles.","PeriodicalId":515764,"journal":{"name":"Proceedings of the Institution of Civil Engineers - Bridge Engineering","volume":"8 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139524956","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

Seismic collapse assessment of single-column bridge piers using the applied element method 使用应用要素法评估单柱桥墩的地震坍塌情况

Proceedings of the Institution of Civil Engineers - Bridge Engineering Pub Date : 2024-01-19 DOI: 10.1680/jbren.23.00023

Reza Akbari, Amir Seyedkhoei

{"title":"Seismic collapse assessment of single-column bridge piers using the applied element method","authors":"Reza Akbari, Amir Seyedkhoei","doi":"10.1680/jbren.23.00023","DOIUrl":"https://doi.org/10.1680/jbren.23.00023","url":null,"abstract":"Several single-column-bent bridges collapsed in the past under earthquakes. Different factors associated with poor structural design and/or construction including inadequate and/or prematurely-terminated Longitudinal Reinforcement (LR), insufficient concrete confinement, or insufficient Transverse Reinforcement (TR) were identified and reported. Different alternate designs or retrofitting solutions were also proposed and examined. One of the well-known samples of this bridge type was the elevated Hanshin Expressway Bridge (HEB) collapsed in the 1995 Kobe earthquake. In that incident, eighteen circular Single-Column Piers (SCPs), monolithically connected to the deck, failed and collapsed. Here, the seismic progressive collapse behavior of SCPs of the HEB was investigated using nonlinear dynamic analyses of 3D numerical models created via the Applied Element Method (AEM). The obtained results agreed well with field observations after the earthquake. Two alternate design solutions for improving the seismic response of the original model were also considered and the efficiency of the solutions was assessed. The results showed that the AEM is capable to model the progressive collapse procedure for concrete bridges with sufficient accuracy. The results proved higher effects of the anchorage length of the LR as well as the space between the TR in the collapse behavior of the pier.","PeriodicalId":515764,"journal":{"name":"Proceedings of the Institution of Civil Engineers - Bridge Engineering","volume":"18 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139612322","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

Axial live load distribution among single row of piles of integral bridges 整体式桥梁单排桩的轴向活荷载分布

Proceedings of the Institution of Civil Engineers - Bridge Engineering Pub Date : 2024-01-13 DOI: 10.1680/jbren.23.00008

S. Erhan

{"title":"Axial live load distribution among single row of piles of integral bridges","authors":"S. Erhan","doi":"10.1680/jbren.23.00008","DOIUrl":"https://doi.org/10.1680/jbren.23.00008","url":null,"abstract":"This study investigates the axial live load distribution among steel H-piles in single-span integral bridges. To achieve this, two- and three-dimensional finite element models for various integral bridges are conducted and analysed using the structural analysis software SAP2000, to determine the maximum axial loads in steel H-piles within two- and three-dimensional models. Subsequently, axial live load distribution factors from the ratio of axial loads calculated from these models are derived. The parametric study reveals that girder spacing and pile spacing exert notable influences on the axial live load distribution among the steel H-piles in integral bridges. Then, nonlinear regression analysis is employed to formulate practical equations as functions of these two parameters. These equations can effectively calculate the live load distribution factors for the piles in integral bridges. To validate the accuracy of the live load distribution factors calculated from the proposed formulae, a comparative analysis is performed with results obtained from structural analysis. The standard deviations of the ratios between these two results are found to be a mere 2%. This clearly demonstrates that the developed formulae yield highly precise estimates of axial live load effects in integral bridge piles.","PeriodicalId":515764,"journal":{"name":"Proceedings of the Institution of Civil Engineers - Bridge Engineering","volume":"17 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139531043","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

A framework for decarbonisation for bridge owners, engineers and designers 桥梁业主、工程师和设计师的脱碳框架

Proceedings of the Institution of Civil Engineers - Bridge Engineering Pub Date : 2024-01-12 DOI: 10.1680/jbren.23.00031

B. Duguid, Cameron Archer-Jones, Chris Hendy, Ciaran Lynn, Kieran O'Connor, Ian Palmer, Ben Sibert

{"title":"A framework for decarbonisation for bridge owners, engineers and designers","authors":"B. Duguid, Cameron Archer-Jones, Chris Hendy, Ciaran Lynn, Kieran O'Connor, Ian Palmer, Ben Sibert","doi":"10.1680/jbren.23.00031","DOIUrl":"https://doi.org/10.1680/jbren.23.00031","url":null,"abstract":"The Net Zero Bridges Group brings together bridge specialists concerned to lower the carbon footprint of their work, and to collectively understand how best to do so. Achieving Net Zero carbon by 2050 is the best way to mitigate the severity of the climate emergency. In addition to social consequences, failure will make ensuring the climate resilience of transport infrastructure increasingly difficult. Bridge engineers must rapidly develop new knowledge and skills, and commit to gradual but steady decarbonisation compatible with agreed climate pathways and timelines. Prioritising decarbonisation requires making different decisions to those traditionally made. The carbon reduction hierarchy asks that measures be prioritised to Avoid, Switch and Improve. Applying these to bridge engineering requires bold choices, while managing risk effectively. The project lifecycle must be rethought to allocate sufficient time at the right time. Above all, the challenge requires collaborative, collective action, to share data and best practice, rather than working in isolation. This paper sets the above in an over-riding framework for action, and provides an overview of current thinking for decarbonising bridge construction and maintenance. It identifies priorities for the industry to tackle within the next few years.","PeriodicalId":515764,"journal":{"name":"Proceedings of the Institution of Civil Engineers - Bridge Engineering","volume":" 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139623844","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