Proceedings of the Institution of Civil Engineers-Bridge Engineering最新文献

Hybrid machine learning model for prediction of vertical deflection of composite bridges 组合桥梁竖向挠度预测的混合机器学习模型

IF 1

Proceedings of the Institution of Civil Engineers-Bridge Engineering Pub Date : 2023-07-18 DOI: 10.1680/jbren.23.00007

Hoang Ha, Le Van Manh, D. D. Nguyen, M. Amiri, Indra Prakash, B. Pham

{"title":"Hybrid machine learning model for prediction of vertical deflection of composite bridges","authors":"Hoang Ha, Le Van Manh, D. D. Nguyen, M. Amiri, Indra Prakash, B. Pham","doi":"10.1680/jbren.23.00007","DOIUrl":"https://doi.org/10.1680/jbren.23.00007","url":null,"abstract":"In the present study, we have developed a novel hybrid Machine Learning (ML) based model namely B-IBk which is a combination of Bagging (B) ensemble and Instance-based K-nearest neighbors (IBk) predictor, for quick and accurate prediction of vertical deflection of steel-concrete composite bridges. In the models’ study, we have used five easily determined input parameters: cross-sectional shape, length of concrete beam (m), number of exploitation years, height of main girder (m), and distance between the main girders (m) to obtain output parameter: maximum vertical deflection (mm). For the development of models, direct measurement data of 80 steel-concrete composite bridges located at different places in Vietnam was collected and used as input and output parameters. Standard statistical evaluation indicators namely Mean Absolute Error (MAE), Correlation Coefficient (R), Root Mean Square Error (RMSE) were used to validate and compare the models’ performance. Results indicated that performance of the novel hybrid model B-IBk is very good (R = 0.908) for the prediction of Y of steel-concrete composite Bridge and better than single IBk model (R = 0.875) on testing dataset. Therefore, the developed novel model B-IBk is a promising tool for the accurate prediction of Y of Steel-Concrete Composite Bridges.","PeriodicalId":44437,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Bridge Engineering","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81129713","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

A control chart to evaluate the control effect of a bridge under active control 评价桥梁在主动控制下控制效果的控制图

IF 1

Proceedings of the Institution of Civil Engineers-Bridge Engineering Pub Date : 2023-06-15 DOI: 10.1680/jbren.23.00014

W. Sung, M. Shih

{"title":"A control chart to evaluate the control effect of a bridge under active control","authors":"W. Sung, M. Shih","doi":"10.1680/jbren.23.00014","DOIUrl":"https://doi.org/10.1680/jbren.23.00014","url":null,"abstract":"To reinforce and improve the function of disaster relief light bridge, the developed Neutral Equilibrium Mechanism (NEM) was applied for controlling the internal force and reducing the vertical deformation of a bridge to form as virtual piers. The control force of NEM was generated by the Proportional–Integral–Derivative controller with a combination of the displacement GP, speed GD and adjusted GI gain coefficients to neutralize the vertical deformation of a bridge created by a moving live load and the dead weight of a bridge. To effectively evaluate the control efficiency of bridge deformation under this mechanism, a multi-dimensional quality evaluation method is proposed to assess the control benefits of bridge deformation under different combinations of control coefficients. The test and analysis results in control performance analysis chart show that it can be clearly observed the control performance index MTIi is around 2-3, 3 and 5 for the combination of GP = 0.5, GD = 0.0, GI = 0.02, GP = 1.0, GD = 0.0, GI = 0.02, and GP = 2.0, GD = 0.0, GI = 0.02 respectively. The analysis results present a clear demonstration of control performance, which can serve as a reference for future practical control safety.","PeriodicalId":44437,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Bridge Engineering","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75147604","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 stone masonry bridges in European treatises: Part 1 – The geometrical configuration 欧洲论著中石砌桥的设计:第1部分-几何结构

IF 1

Proceedings of the Institution of Civil Engineers-Bridge Engineering Pub Date : 2023-05-17 DOI: 10.1680/jbren.22.00038

J. León, Benedetta Orfeo, L. Todisco, P. Miner

引用次数: 0

Extreme fjord-crossings development in the E39 coastal highway route project – a review E39沿海高速公路路线项目中极端峡湾渡口的开发——综述

IF 1

Proceedings of the Institution of Civil Engineers-Bridge Engineering Pub Date : 2023-04-25 DOI: 10.1680/jbren.22.00012

X. Xiang

引用次数: 2

The replacement of the Kosciuszko Bridge 更换科希丘什科大桥

IF 1

Proceedings of the Institution of Civil Engineers-Bridge Engineering Pub Date : 2023-04-20 DOI: 10.1680/jbren.21.00083

Carol J. Wynperle, Kwok-Leung Tam, L. Bellevue, Benjamin Szymanski

{"title":"The replacement of the Kosciuszko Bridge","authors":"Carol J. Wynperle, Kwok-Leung Tam, L. Bellevue, Benjamin Szymanski","doi":"10.1680/jbren.21.00083","DOIUrl":"https://doi.org/10.1680/jbren.21.00083","url":null,"abstract":"The Kosciuszko Bridge carries a 1.8-km-long segment of the Brooklyn-Queens Expressway over Newtown Creek between Brooklyn and Queens in New York City. The roadway is a vital link in the region's transportation network, carrying over 170,000 vehicles per day. Due to structural and operational deficiencies, the existing structure was replaced. The new bridge consists of two parallel structures, one eastbound and one westbound, with main spans mirroring one another. Each structure consists of a single tower cable-stayed main span over Newtown Creek with unbalanced main and back spans. This was the first cable-stayed bridge to be constructed in New York City, joining the ranks of the City's most iconic bridges. The paper will discuss the two main span structures and will focus primarily on the design and construction of the Westbound, Phase 2 bridge. Some of key design aspects will be outlined, including outboard cable anchorages, a concrete-filled counterweight and other details intended to facilitate construction, maintenance and inspection. The Eastbound, Phase 1 bridge was constructed under a design-build contract, and the Westbound, Phase 2 bridge as a design-bid-build. The paper will also touch on some of the design aspects that were refined during the second phase.","PeriodicalId":44437,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Bridge Engineering","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90957097","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

Quantifying the impact of bridge geometry and surrounding terrain: wind effects on bridges 量化桥梁几何形状和周围地形的影响:风对桥梁的影响

IF 1

Proceedings of the Institution of Civil Engineers-Bridge Engineering Pub Date : 2023-04-17 DOI: 10.1680/jbren.23.00005

Yuxiang Zhang, Conor Sweeney, P. Cardiff, Fergal Cahill, J. Keenahan

{"title":"Quantifying the impact of bridge geometry and surrounding terrain: wind effects on bridges","authors":"Yuxiang Zhang, Conor Sweeney, P. Cardiff, Fergal Cahill, J. Keenahan","doi":"10.1680/jbren.23.00005","DOIUrl":"https://doi.org/10.1680/jbren.23.00005","url":null,"abstract":"The safety and serviceability of long-span bridges can be significantly impacted by wind effects and therefore it is crucial to accurately estimate them during bridge design. This study develops full-scale 3-Dimensional CFD (computational fluid dynamics) simulation models to replicate wind conditions at the Rose Fitzgerald Kennedy Bridge in Ireland. The neglection of bridge geometries and the use of small scales in previous studies are significant limitations, and both the bridge geometry and surrounding terrain are included here at full-scale. Input values for wind conditions are mapped from weather simulations that apply the Weather Research and Forecasting (WRF) model. Wind velocities at four different points calculated by CFD simulations are compared with corresponding data collected from SHM field measurements. The calculated time-averaged wind velocities at four different locations on the bridge are shown to have relative differences of less than 10% to the measured wind velocities by anemometers 90% of the time. The maximum relative difference among all comparisons was only 15%, shown to be partially due to the inclusion of the full bridge and terrain geometry.","PeriodicalId":44437,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Bridge Engineering","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80337649","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 stone masonry bridges according to European treatises: Part 2 – Construction process 根据欧洲文献设计石砌桥梁:第2部分-施工过程

IF 1

Proceedings of the Institution of Civil Engineers-Bridge Engineering Pub Date : 2023-03-27 DOI: 10.1680/jbren.22.00039

J. León, Benedetta Orfeo, L. Todisco, P. Miner

引用次数: 0

Identification of vertical restraint stiffness of pier foundation for continuous-beam bridges 连续梁桥桥墩基础竖向约束刚度辨识

IF 1

Proceedings of the Institution of Civil Engineers-Bridge Engineering Pub Date : 2023-03-27 DOI: 10.1680/jbren.22.00047

Wuji Tang, Dejian Li, Yuwei Lian, Junyi Zhang

{"title":"Identification of vertical restraint stiffness of pier foundation for continuous-beam bridges","authors":"Wuji Tang, Dejian Li, Yuwei Lian, Junyi Zhang","doi":"10.1680/jbren.22.00047","DOIUrl":"https://doi.org/10.1680/jbren.22.00047","url":null,"abstract":"With the progress of engineering technology, the natural frequency of structures can be easily obtained by dynamic testing. If the relationship between the fundamental frequency and the constraint stiffness is analyzed, the constraint stiffness of the foundation can be identified. To this end, the vertical vibration of piers is first carried out, and a dynamic identification method for constraint stiffness is proposed. Relying on a project example of a bare pier, the vertical fundamental frequency of the test pier is measured by the pulsation method. Then the finite element software is used to establish a test pier model. The stiffness identification is simulated in the completion stage by adding elastic support and concentrated mass on the top of the model pier. The results show that the difference between the identification results of the bare pier and the calculated value of empirical formula is only 2.97%. The error of the identification results obtained by simulating the completion stage is less than 2.34%, and decreases with the increase of the constraint stiffness of the pier top. This method has a high accuracy and is suitable for identifying the vertical restraint stiffness of the foundation of constant section piers of continuous beam bridges.","PeriodicalId":44437,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Bridge Engineering","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87724096","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

Retraction notice 撤销通知

Proceedings of the Institution of Civil Engineers-Bridge Engineering Pub Date : 2023-03-01 DOI: 10.1680/jbren.2023.176.1.69

引用次数: 0

Award-winning paper in 2021 2021年获奖论文

Proceedings of the Institution of Civil Engineers-Bridge Engineering Pub Date : 2023-03-01 DOI: 10.1680/jbren.2023.176.1.67

引用次数: 0