Journal of Bridge Engineering最新文献_第3页

Mechanism and Aerodynamic Countermeasures of Vortex-Induced Vibration of a Cable-Stayed Bridge with Narrow Π-Shaped Girder Sections Π-Shaped窄梁截面斜拉桥涡激振动机理及气动对策

2区工程技术

Journal of Bridge Engineering Pub Date : 2023-11-01 DOI: 10.1061/jbenf2.beeng-6285

Zhiwen Liu, Fawei He, Aiguo Yan, Zhenbiao Liu, Tao Yin, Zhengqing Chen

引用次数: 0

Performance of a Long-Span Suspension Bridge Subjected to Sudden Single Suspender Loss 某大跨度悬索桥单吊杆突然损失的性能分析

IF 3.6 2区工程技术

Journal of Bridge Engineering Pub Date : 2023-11-01 DOI: 10.1061/jbenf2.beeng-6108

Hongfan Wang, Qian Chen, Anil Kumar Agrawal, Sherif El-Tawil, B. Bhattacharya, Waider Wong

引用次数: 0

An NCFA-Based Notch Frequency Feature Extraction Method for Guided Waves and Its Application in Steel Strand Tension Detection 基于nfaa的导波缺口频率特征提取方法及其在钢绞线张力检测中的应用

2区工程技术

Journal of Bridge Engineering Pub Date : 2023-11-01 DOI: 10.1061/jbenf2.beeng-6495

Xiushi Cui, Dongsheng Li, Jiahe Liu, Jinping Ou

引用次数: 0

Performance Evaluation of Prestressed Girders with 17.8-mm (0.7-in.) Strands 17.8 mm (0.7 in.)预应力梁的性能评价链

2区工程技术

Journal of Bridge Engineering Pub Date : 2023-11-01 DOI: 10.1061/jbenf2.beeng-6300

Carlos A. Tamayo, Bahram M. Shahrooz, Kent A. Harries, Richard A. Miller, Reid W. Castrodale

{"title":"Performance Evaluation of Prestressed Girders with 17.8-mm (0.7-in.) Strands","authors":"Carlos A. Tamayo, Bahram M. Shahrooz, Kent A. Harries, Richard A. Miller, Reid W. Castrodale","doi":"10.1061/jbenf2.beeng-6300","DOIUrl":"https://doi.org/10.1061/jbenf2.beeng-6300","url":null,"abstract":"There has been a growing interest in using large-diameter strands to alleviate congestion by using fewer strands, reduce the total number of girders by increasing girder spacing, increase the span length, and allow shallower girders. While the 2020 AASHTO LRFD Bridge Design Specifications included 17.8-mm (0.7-in.) strands by reference to AASHTO M203, these larger-diameter strands were not used in bridge construction primarily because AASHTO LRFD was silent about the design aspects of members reinforced with 17.8-mm (0.7-in.) strands. The presented multifaceted, multiyear research involved an extensive parametric design case study, nonlinear finite-element analyses, material characterization, component tests, and full-scale girder experiments. This paper focuses on the full-scale girder tests, which were used to examine development length, detailing requirements, and flexural and shear behavior and strength. Experimentally determined development lengths were found to be shorter than those prescribed by the AASHTO LRFD Specification. Flexural and shear strength could be determined using established procedures. The current minimum required amount of confinement reinforcement was found to be sufficient to confine 17.8-mm (0.7-in.) strands. The extension of bottom flange confinement reinforcement was found to be inadequate for cases with partially debonded 17.8-mm (0.7-in.) strands, but extension of bottom flange confinement reinforcement to 1.5d beyond the end of the girder was adequate for cases with no debonded strands. The minimum bottom flange confinement reinforcement required by the AASHTO LRFD Specification must be extended to at least 1.5d beyond the termination of the longest debonded length of 17.8-mm (0.7-in.) strands.","PeriodicalId":56125,"journal":{"name":"Journal of Bridge Engineering","volume":"788 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135011996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Built-Up Press Brake-Formed Tub Girders 组合式压制动成型桶梁

2区工程技术

Journal of Bridge Engineering Pub Date : 2023-11-01 DOI: 10.1061/jbenf2.beeng-6103

Mirela D. Tumbeva, Sherryen C. Mutoka, Ashley P. Thrall, Theodore P. Zoli, Stephanie Wagner, Prince Baah

引用次数: 0

Evaluating the Performance of Protection Beams Subject to Overheight Vehicular Impacts Using Analytical and Machine Learning–Based Methods 使用基于分析和机器学习的方法评估受超高车辆冲击的保护梁的性能

2区工程技术

Journal of Bridge Engineering Pub Date : 2023-11-01 DOI: 10.1061/jbenf2.beeng-5984

Ran Cao, Xun Zuo, Anil Kumar Agrawal, Sherif El-Tawil, Waider Wong

引用次数: 0

Structural Aspects of the Collapse of a RC Half-Joint Bridge: Case of the Annone Overpass 混凝土半接合桥倒塌的结构方面:以安诺立交桥为例

2区工程技术

Journal of Bridge Engineering Pub Date : 2023-11-01 DOI: 10.1061/jbenf2.beeng-6063

Marco di Prisco, Matteo Colombo, Paolo Martinelli

引用次数: 1

Main Cable Shape-Finding and Live Load Response of the Suspension Bridge with Central Buckles: An Analytical Algorithm 带中心扣悬索桥主缆线形及活载响应的解析算法

IF 3.6 2区工程技术

Journal of Bridge Engineering Pub Date : 2023-11-01 DOI: 10.1061/jbenf2.beeng-6350

Wenmin Zhang, Xing-hang Shen, Jia-qi Chang

引用次数: 0

Experimental and Numerical Study on the Aerodynamic Admittance of Twin-Box Bridge Decks in Sinusoidal Gusts and Continuous Turbulence 正弦阵风和连续湍流中双箱桥面气动导纳的实验与数值研究

IF 3.6 2区工程技术

Journal of Bridge Engineering Pub Date : 2023-11-01 DOI: 10.1061/jbenf2.beeng-6198

Weilin Li, L. Patruno, H. Niu, Y. An, Xugang Hua

引用次数: 0

Validating Dynamic Identification of Foundation Scour Based on Large-Scale Water Flumes 基于大型水槽的地基冲刷动力识别验证

2区工程技术

Journal of Bridge Engineering Pub Date : 2023-11-01 DOI: 10.1061/jbenf2.beeng-6296

Xiaolong Ma, Wen Xiong, Rongzhao Zhang, C. S. Cai

{"title":"Validating Dynamic Identification of Foundation Scour Based on Large-Scale Water Flumes","authors":"Xiaolong Ma, Wen Xiong, Rongzhao Zhang, C. S. Cai","doi":"10.1061/jbenf2.beeng-6296","DOIUrl":"https://doi.org/10.1061/jbenf2.beeng-6296","url":null,"abstract":"Recently, bridge collapse accidents have become increasingly frequent during the flooding season, and foundation scour is one of the main reasons. Tracking scour evolution accurately is a key premise for preventing and controlling hydrological damage. Scour identification according to the changing dynamic characteristics during the scouring process tends to be one of the top technical methodologies in scour monitoring. Although efforts have been made to investigate the dynamic identification of foundation scour, the investigations have mainly focused on the qualification of foundation scour utilizing numerical simulations. Quantitative analysis and validation through laboratory experiments with large-scale water flumes are still lacking. To bridge the gap, this study performed physical modeling experiments with a large-scale water flume for foundation scour to investigate the relationship between structural frequency and scour evolution. The research sought to validate the feasibility of using structural frequency in dynamic identification. First, scour experiments with a large-scale water flume for three piers were performed to collect the time history of acceleration signals. Then, the acceleration signals were processed to recognize the temporal evolution of structural frequency during the scouring process. Finally, the relationship between the temporal scour depth and frequency was assumed to be linear and nonlinear to fit the time history of structural frequency. The results indicated that the frequency and the square of frequency can be taken as the dynamic fingerprint in scour identification according to the frequency range. Based on the validation of large-scale flume experiments, the proposed nonlinear temporal models of frequency in the study demonstrated a good indicator for predicting scour depth. The methodology can greatly enhance the practicality and convenience of bridge scour dynamic identification.","PeriodicalId":56125,"journal":{"name":"Journal of Bridge Engineering","volume":"235 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135011678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0