BEHAVIOUR OF LAP SHEAR RIVETED CONNECTIONS WITH CONSTRUCTIONAL IMPERFECTIONS

地震工程与工程振动 Pub Date : 2021-01-01 DOI:10.7712/120121.8773.18525

Aldo Milone, A. de Martino

{"title":"BEHAVIOUR OF LAP SHEAR RIVETED CONNECTIONS WITH CONSTRUCTIONAL IMPERFECTIONS","authors":"Aldo Milone, A. de Martino","doi":"10.7712/120121.8773.18525","DOIUrl":null,"url":null,"abstract":"Riveted connections are the most common structural details of existing steel bridges. Due to the increase of traffic loads as respect to the conditions at their erection time, existing riveted bridges are usually characterized by structural deficiencies and prone to fatigue damages. Moreover, the structural inadequacies are often magnified by the presence of peculiar constructional defects (i.e. shank misalignment, forged head distortion), which induce local stress concentrations that further reduce the service life. In this paper, the behaviour of riveted lap shear connections under static and cyclic actions is investigated by means of finite element (FE) simulations. The investigated connections are representative of typical geometries of the details of actual existing railway bridges. FE models were calibrated against the results of former tests drawn from literature. In addition, the FE models allowed at investigating the influence of constructional imperfections on the ultimate static and fatigue resistance and of the connections. In order to widen the parametric study, the following parameters are varied, namely: (i) number of rivets, (ii) diameter of rivet shank, (iii) thickness and width of the plates.","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"地震工程与工程振动","FirstCategoryId":"1087","ListUrlMain":"https://doi.org/10.7712/120121.8773.18525","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

Riveted connections are the most common structural details of existing steel bridges. Due to the increase of traffic loads as respect to the conditions at their erection time, existing riveted bridges are usually characterized by structural deficiencies and prone to fatigue damages. Moreover, the structural inadequacies are often magnified by the presence of peculiar constructional defects (i.e. shank misalignment, forged head distortion), which induce local stress concentrations that further reduce the service life. In this paper, the behaviour of riveted lap shear connections under static and cyclic actions is investigated by means of finite element (FE) simulations. The investigated connections are representative of typical geometries of the details of actual existing railway bridges. FE models were calibrated against the results of former tests drawn from literature. In addition, the FE models allowed at investigating the influence of constructional imperfections on the ultimate static and fatigue resistance and of the connections. In order to widen the parametric study, the following parameters are varied, namely: (i) number of rivets, (ii) diameter of rivet shank, (iii) thickness and width of the plates.

查看原文本刊更多论文

具有结构缺陷的搭接剪切铆接的性能

铆接连接是现有钢桥最常见的结构细节。由于交通荷载相对于其架设时的状况增加，现有铆接桥梁通常存在结构缺陷，容易产生疲劳损伤。此外，由于存在特殊的结构缺陷(如刀柄错位、锻头变形)，结构缺陷往往会被放大，这些缺陷会引起局部应力集中，从而进一步降低使用寿命。本文采用有限元模拟的方法，研究了铆接搭接剪切连接在静力和循环作用下的性能。所研究的连接代表了实际现有铁路桥细节的典型几何形状。FE模型是根据文献中以前的测试结果进行校准的。此外，有限元模型还可用于研究结构缺陷对连接的极限静力和疲劳抗力的影响。为了扩大参数研究范围，改变以下参数，即:(i)铆钉数量，(ii)铆钉柄直径，(iii)板的厚度和宽度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

地震工程与工程振动

自引率

0.00%

发文量

4781

期刊介绍：