Modal testing of an isolated overpass bridge in its construction stages

IF 0.6 4区 工程技术 Q4 ENGINEERING, CIVIL Baltic Journal of Road and Bridge Engineering Pub Date : 2018-03-27 DOI:10.3846/BJRBE.2018.398
F. Aras
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引用次数: 2

Abstract

This study presents the application of ambient vibration survey based dynamic testing on an isolated, precast and pre-stressed overpass bridge during and after its construction. In the studied three-bay bridge, the girders are located on the elastomeric bearings carried by two abutments and two internal piers. The first modal testing is performed after the placement of the girders on the elastomeric bearings and dynamic properties of the uncompleted bridge are determined. After the completion of all construction works and the opening of the overpass to human traffic, the modal testing is repeated to obtain the dynamic properties of the final structure. The dynamic properties obtained in both analyses are used to interpret the effects of the performed works between two modal testing. Moreover, the structural behaviour of isolated, precast and pre-stressed bridges is evaluated in detail.
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孤立立交桥施工阶段模态试验研究
本研究介绍了基于环境振动测量的动态测试在一座隔震、预制和预应力跨线桥施工期间和施工后的应用。在所研究的三开间桥梁中,主梁位于由两个桥台和两个内部桥墩承载的弹性支座上。第一次模态试验是在将主梁放置在弹性支座上并确定未完工桥梁的动态特性后进行的。在所有施工工程完成并向人类交通开放后,重复进行模态试验,以获得最终结构的动力特性。在两次分析中获得的动态特性用于解释在两次模态试验之间进行的工作的影响。此外,还详细评估了隔震、预制和预应力桥梁的结构性能。
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来源期刊
Baltic Journal of Road and Bridge Engineering
Baltic Journal of Road and Bridge Engineering 工程技术-工程:土木
CiteScore
2.10
自引率
9.10%
发文量
25
审稿时长
>12 weeks
期刊介绍: THE JOURNAL IS DESIGNED FOR PUBLISHING PAPERS CONCERNING THE FOLLOWING AREAS OF RESEARCH: road and bridge research and design, road construction materials and technologies, bridge construction materials and technologies, road and bridge repair, road and bridge maintenance, traffic safety, road and bridge information technologies, environmental issues, road climatology, low-volume roads, normative documentation, quality management and assurance, road infrastructure and its assessment, asset management, road and bridge construction financing, specialist pre-service and in-service training;
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