Optimal intensity measure of post-tensioned girder highway bridge using fragility curves

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2021-06-01 DOI:10.12989/EAS.2021.20.6.681
F. Kehila, Mustapha Remki, Nadjib Hemaidi Zourgui, A. Kibboua, H. Bechtoula
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引用次数: 1

Abstract

Over the last decade, Algeria has realized the highway project. It covers more than 1,200 km joining Algeria's eastern and western borders in the northern part of the country. This region is characterized by a high level of seismic activity. In total, this project contains more than 530 bridges, knowing that the design of these bridges was carried out with a simplified method namely the coefficient method, and does not comply with the requirements of the new Algerian seismic code for bridges RPOA-2008. For this reason, the development of fragility curves for these structures is necessary. This paper aims to develop analytical fragility curves for component and system fragility curves for post-tensioned girder highway bridges that represent the most common configuration in Algeria taking into account different spectral intensity measurements and the soil class based on the shear wave velocity specified in the Algerian bridge design code. Incremental dynamic analysis (IDA) is performed longitudinally on the bridge. Sixty seismic ground motions are scaled and employed for the time history nonlinear analysis. A variety of intensity measurements are chosen and the optimal intensity measurement with the lowest dispersion is proposed.
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基于脆性曲线的后张梁桥强度优化测度
在过去的十年里,阿尔及利亚实现了高速公路项目。它覆盖了1200多公里,连接了阿尔及利亚北部的东西边界。这个地区的特点是地震活动频繁。该项目总共包含530多座桥梁,知道这些桥梁的设计采用简化方法即系数法进行,并且不符合新的阿尔及利亚桥梁抗震规范RPOA-2008的要求。因此,有必要对这些结构进行脆性曲线的研究。本文旨在考虑阿尔及利亚桥梁设计规范中规定的不同频谱强度测量和基于剪切波速的土壤类别,为阿尔及利亚最常见的后张梁公路桥的构件和系统开发分析易损性曲线。纵向进行增量动力分析(IDA)。本文对60个地震地震动进行了尺度化处理,并应用于时程非线性分析。选择了多种强度测量方法,提出了色散最小的最佳强度测量方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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