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

Editorial: Structural health monitoring for intelligent asset management 社论：结构健康监测促进智能资产管理

Proceedings of the Institution of Civil Engineers - Bridge Engineering Pub Date : 2024-06-01 DOI: 10.1680/jbren.2024.177.2.73

Christian Christodoulou

引用次数: 0

Feasibility and effectiveness of replacing built-up members with hollow and concrete-filled section for bow-truss bridge 在弓形桁架桥上用空心和混凝土填充截面取代内置构件的可行性和有效性

Proceedings of the Institution of Civil Engineers - Bridge Engineering Pub Date : 2024-05-10 DOI: 10.1680/jbren.23.00028

Pramod Tiwari, Kranti Jain

{"title":"Feasibility and effectiveness of replacing built-up members with hollow and concrete-filled section for bow-truss bridge","authors":"Pramod Tiwari, Kranti Jain","doi":"10.1680/jbren.23.00028","DOIUrl":"https://doi.org/10.1680/jbren.23.00028","url":null,"abstract":"This paper investigates the comparative study of the conventional bow truss bridge proposed at Rishikesh, India with the composite bow truss bridge (new construction technique). Firstly, the bridge has been designed by considering the conventional sections of steel. By adopting a modified construction technique, the top chord member of the bridge is replaced with a concrete-filled steel box section; bottom girder, diagonal and cross girder (tension members) with hollow steel box sections. For replacement analysis, the FEM model is validated with the experimental data. The 200x200x8mm steel section (fy=374MPa) filled with concrete (fck=42.5MPa) is found suitable for top chord members. Buckling and plate yielding analysis for the box section are also investigated; due to higher stress concertation only two opposite sides of the plate yield. For obtaining the economic design, the cost comparison has been carried out, which shows that the composite section can cut the overall cost up to 51% when assuming pinned connections and 13% when assuming fixed connections. Furthermore, the effects of the joint (by considering the hinge and fixed) have been analyzed to check the critical connection and end failure of bridge members.","PeriodicalId":515764,"journal":{"name":"Proceedings of the Institution of Civil Engineers - Bridge Engineering","volume":" 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140993302","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

Investigation into soil ratcheting behind integral bridges using centrifuge modelling 利用离心机建模研究整体式桥梁后方的土壤棘轮效应

Proceedings of the Institution of Civil Engineers - Bridge Engineering Pub Date : 2024-05-10 DOI: 10.1680/jbren.23.00046

Douglas Morley, Gopal S.P. Madabhushi, Dennis Sakufiwa, I. Thusyanthan

{"title":"Investigation into soil ratcheting behind integral bridges using centrifuge modelling","authors":"Douglas Morley, Gopal S.P. Madabhushi, Dennis Sakufiwa, I. Thusyanthan","doi":"10.1680/jbren.23.00046","DOIUrl":"https://doi.org/10.1680/jbren.23.00046","url":null,"abstract":"U.K. integral bridges are commonly designed according to PD 6694-1, with guidance on backfill ratcheting based on experimental data that is limited by: testing at a small-scale low stress state, a lack of abutment foundation and soil below, and a limited range of soil-structure configurations. As integral bridge use increases, there is a need for further understanding of the strain ratcheting mechanism which can lead to smarter designs that minimise material usage and lifetime maintenance. This research presents the suitability of modern centrifuge techniques to simulate ratcheting of the soil behind an integral bridge abutment over a design life of thermal loading. A high accuracy actuation system was developed and used in centrifuge testing, with test data provided to demonstrate its capabilities. This is followed by a comparison of surface settlements, deck axial forces and abutment bending moment distributions recorded for various soil-structure combinations, highlighting the sensitivity of soil ratcheting. The paper concludes that centrifuge modelling can successfully simulate backfill strain ratcheting behind integral abutments over a range of soil-structure configurations. Furthermore, results suggest that global rotations and base sliding are significant to the overall response, clarifying the importance of modelling at an appropriate stress state with a foundation and the soil below.","PeriodicalId":515764,"journal":{"name":"Proceedings of the Institution of Civil Engineers - Bridge Engineering","volume":" 45","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140994199","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

On the use of aluminium alloys in sustainable design, construction, and rehabilitation of bridges: emerging applications and future opportunities 在桥梁的可持续设计、建造和修复中使用铝合金：新兴应用和未来机遇

Proceedings of the Institution of Civil Engineers - Bridge Engineering Pub Date : 2024-05-07 DOI: 10.1680/jbren.23.00018

Evangelia Georgantzia, Mohammad M Kashani

{"title":"On the use of aluminium alloys in sustainable design, construction, and rehabilitation of bridges: emerging applications and future opportunities","authors":"Evangelia Georgantzia, Mohammad M Kashani","doi":"10.1680/jbren.23.00018","DOIUrl":"https://doi.org/10.1680/jbren.23.00018","url":null,"abstract":"Over the last few decades, aluminium alloys have been widely used as primary structural material in building construction. This is due to their advantageous properties such as low density, high strength-to-weight ratio, durability and excellent corrosion resistance, and high recyclability. The scope of this review paper is to explore the potential use of aluminium alloys in bridge design and construction. To this end, a thorough discussion of the material properties is presented to identify if the aluminium alloys can meet the bridge design and construction requirements. Particular emphasis is also given on total life-cycle cost of aluminum alloys and their potential role towards sustainability and decarbonisation of bridge structures. Moreover, the possibility of using aluminium alloys as an alternative for bridge rehabilitation and strengthening is investigated herein. A review of the existing research on the static, dynamic and fatigue structural response of aluminium bridge decks is also conducted. The main findings are highlighted, and research gaps are identified. Finally, corresponding future research to fill these gaps is recommended.","PeriodicalId":515764,"journal":{"name":"Proceedings of the Institution of Civil Engineers - Bridge Engineering","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141003418","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 design of the Nant Ffrwd mainline bridges with flexible integral frame abutments 采用柔性整体框架桥墩的 Nant Ffrwd 主线桥梁的设计

Proceedings of the Institution of Civil Engineers - Bridge Engineering Pub Date : 2024-04-23 DOI: 10.1680/jbren.23.00043

José Luis de La Cuesta Padilla, Reza Mirehsan, Winnie Guan

{"title":"The design of the Nant Ffrwd mainline bridges with flexible integral frame abutments","authors":"José Luis de La Cuesta Padilla, Reza Mirehsan, Winnie Guan","doi":"10.1680/jbren.23.00043","DOIUrl":"https://doi.org/10.1680/jbren.23.00043","url":null,"abstract":"As part of the A465 Head of the Valleys Sections 5&6 project two integral bridges with a maximum span of 70m across the Nant Ffrwd valley were designed to support the new mainline carriageway construction. The topography and founding rock levels were such that abutment walls up to 19m in height were required. To provide significant material and carbon efficiencies the abutments were designed to be slender with their flexibility accounted for in the design. In the UK for full height integral frame abutments, PD 6694–1 (BSI, 2020) presents a limit equilibrium/simplified method to determine K* the enhanced horizontal earth pressure coefficient generated from strain ratcheting, where the values of earth pressures generated are based on the full height of the abutment and do not consider the flexibility of the abutment. For slender abutments this can be conservative for the design and unrealistic to the soil structure interaction. Where the foundation is rigid and the abutment flexible there will be parts of the abutment which will not deflect or rotate from expansion of the bridge deck and will thus not generate earth pressures that approach the limiting K* values. This paper will discuss the design of the Nant Ffrwd bridges and the methods used to determine the magnitude of earth pressures and their distribution based on the stiffness of the foundation and the structural elements.","PeriodicalId":515764,"journal":{"name":"Proceedings of the Institution of Civil Engineers - Bridge Engineering","volume":"107 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140669945","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 performance of resilient self-centering bridge piers equipped with SMA bars 装有 SMA 杆件的弹性自定心桥墩的抗震性能

Proceedings of the Institution of Civil Engineers - Bridge Engineering Pub Date : 2024-04-22 DOI: 10.1680/jbren.23.00027

Sedef Kocakaplan, Ehsan Ahmadi, M. Kashani

引用次数: 0

Application of variational mode decomposition in vibration-based bridge damage detection 变模分解在基于振动的桥梁损伤检测中的应用

Proceedings of the Institution of Civil Engineers - Bridge Engineering Pub Date : 2024-04-21 DOI: 10.1680/jbren.23.00036

Shahrooz Khalkhali Shandiz

{"title":"Application of variational mode decomposition in vibration-based bridge damage detection","authors":"Shahrooz Khalkhali Shandiz","doi":"10.1680/jbren.23.00036","DOIUrl":"https://doi.org/10.1680/jbren.23.00036","url":null,"abstract":"Bridges are critical infrastructure that require continuous structural health monitoring to ensure safety. Vibration-based methods utilize changes in dynamic response for damage detection. This study applies variational mode decomposition (VMD), a signal analysis technique, to detect damage in a three-span beam bridge model subjected to moving loads. A finite element model is developed to represent the bridge-vehicle interaction, and damage is simulated by reducing flexural stiffness. Sensors placed on each span record vibrations during vehicle passage. VMD decomposes the signals to analyze for damage indications. Different damage levels (30-50% stiffness reduction) and locations (each span) are evaluated. Vehicle speed is also varied to assess its effect. Damage is identified as peaks in the instantaneous energy diagrams of decomposed signals, correctly indicating the axle locations. Detection improves with sensors nearer the damage and lower speed. The results demonstrate VMD's ability to detect and locate damage without a baseline, indicating its potential as a non-baseline vibration-based damage detection method for bridges.","PeriodicalId":515764,"journal":{"name":"Proceedings of the Institution of Civil Engineers - Bridge Engineering","volume":"122 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140677727","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

Point cloud contour extraction method based on improved pass-through dimensionality reduction 基于改进直通降维的点云轮廓提取方法

Proceedings of the Institution of Civil Engineers - Bridge Engineering Pub Date : 2024-03-19 DOI: 10.1680/jbren.23.00030

Dongni Liang, Zhufeng Jia, Bo Wang, Lihang Chen, Xiongjue Wang

{"title":"Point cloud contour extraction method based on improved pass-through dimensionality reduction","authors":"Dongni Liang, Zhufeng Jia, Bo Wang, Lihang Chen, Xiongjue Wang","doi":"10.1680/jbren.23.00030","DOIUrl":"https://doi.org/10.1680/jbren.23.00030","url":null,"abstract":"Obtaining a point cloud model that considers the overall information of large steel components as well as the local information of bolt holes is an important approach for the virtual assembly of large steel structures. This paper proposes a point cloud extraction method to improve the uniformity of the dimensionality reduction distribution. Firstly, the point cloud data characterizing the overall information of the large-size component and the local information of the bolt-hole group are obtained by combining vertical 3D laser scanning and handheld 3D laser scanning; the point cloud was then triaxially equidistant and reduced in dimension based on improved straight-pass filtering, and the corner point cloud extracted using a planar point cloud distribution uniformity algorithm; finally, the point cloud is restored to the same space to complete the contour extraction of the point cloud. The accuracy of the contour extraction method was verified by conducting point cloud feature extraction tests using standard components. Compared to conventional feature extraction, the method provides targeted local feature extraction for bars with a certain regularity of geometric configuration, reducing the time required for feature extraction and providing a brief database for the virtual assembly of steel joist beams.","PeriodicalId":515764,"journal":{"name":"Proceedings of the Institution of Civil Engineers - Bridge Engineering","volume":"21 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140229933","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

Editorial: Bridge Engineering – What next? 社论：桥梁工程--下一步该怎么办？

Proceedings of the Institution of Civil Engineers - Bridge Engineering Pub Date : 2024-03-01 DOI: 10.1680/jbren.2024.177.1.1

S. Mitoulis

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Bridge Engineering: Referees 2023 桥梁工程：裁判员 2023

Proceedings of the Institution of Civil Engineers - Bridge Engineering Pub Date : 2024-03-01 DOI: 10.1680/jbren.2024.177.1.71

引用次数: 0