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A new method for the toughness assessment of mobile crane components based on damage mechanics 基于损伤力学的汽车起重机构件韧性评估新方法
IF 1.6
Steel Construction-Design and Research Pub Date : 2022-05-01 DOI: 10.1002/stco.202100041
Dong-wei Li, M. Könemann, Michael Dölz, S. Münstermann
{"title":"A new method for the toughness assessment of mobile crane components based on damage mechanics","authors":"Dong-wei Li, M. Könemann, Michael Dölz, S. Münstermann","doi":"10.1002/stco.202100041","DOIUrl":"https://doi.org/10.1002/stco.202100041","url":null,"abstract":"The characterization of toughness properties in standard Charpy or fracture mechanics tests calls for thickness requirements to be met. Therefore, the characterization of toughness properties is a problem for thin‐walled structures. Replacing Charpy impact toughness testing by impact notch tensile testing can solve this problem. However, the toughness requirements are still expressed in terms of standard test results. Therefore, a framework is proposed here for translating these standard test requirements into impact notch tensile test requirements. The proposed framework relies on numerical simulations with a phenomenological damage mechanics model, which uses state‐of‐stress‐dependent, strain‐based criteria for the prediction of local damage and global fracture. This model takes the effects of non‐proportional strain paths into account and applies different criteria for cleavage and ductile fracture in order to predict correctly the activation of cleavage and ductile fracture mechanisms in the corresponding numerical simulations.","PeriodicalId":54183,"journal":{"name":"Steel Construction-Design and Research","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45101515","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
Welded connections at high‐strength steel hollow section joints 高强度钢空心型材接头处的焊接连接
IF 1.6
Steel Construction-Design and Research Pub Date : 2022-05-01 DOI: 10.1002/stco.202100036
R. Stroetmann, T. Kästner, Brian Rust, Jan Schmidt
{"title":"Welded connections at high‐strength steel hollow section joints","authors":"R. Stroetmann, T. Kästner, Brian Rust, Jan Schmidt","doi":"10.1002/stco.202100036","DOIUrl":"https://doi.org/10.1002/stco.202100036","url":null,"abstract":"The calculation of the loadbearing capacity of hollow section joints using the design formulas according to EN 1993‐1‐8 assumes full‐strength welded connections if the non‐linear stress distribution over the circumference is not covered by calculation. Sufficient ductility in the connections ensures a plastic redistribution capacity within each joint. In the case of hollow section structures made of high‐strength steels, it becomes more difficult to meet the requirement for full‐strength welds as the yield strength of the base material increases.","PeriodicalId":54183,"journal":{"name":"Steel Construction-Design and Research","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49329059","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: 2
Content: Steel Construction 2/22 内容:钢结构2/22
IF 1.6
Steel Construction-Design and Research Pub Date : 2022-05-01 DOI: 10.1002/stco.202270202
{"title":"Content: Steel Construction 2/22","authors":"","doi":"10.1002/stco.202270202","DOIUrl":"https://doi.org/10.1002/stco.202270202","url":null,"abstract":"","PeriodicalId":54183,"journal":{"name":"Steel Construction-Design and Research","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43748563","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
Fatigue of welded tubular K‐joints made up of circular hollow sections 由圆形空心截面组成的焊接管状K型接头的疲劳
IF 1.6
Steel Construction-Design and Research Pub Date : 2022-05-01 DOI: 10.1002/stco.202100035
U. Kuhlmann, A. Dürr, S. Bove, J. Roth, Wigand Knecht
{"title":"Fatigue of welded tubular K‐joints made up of circular hollow sections","authors":"U. Kuhlmann, A. Dürr, S. Bove, J. Roth, Wigand Knecht","doi":"10.1002/stco.202100035","DOIUrl":"https://doi.org/10.1002/stco.202100035","url":null,"abstract":"This article deals with the fatigue behaviour of thick‐walled welded K‐joints made up of circular hollow sections (CHS). Two important aspects of the investigations were the extension of the application range to large CHS and the development of practice‐oriented recommendations for fabrication and quality assurance for weld shape and weld quality. For this purpose, fatigue tests were conducted on large CHS joints and on single K‐joints with specified weld irregularities. These studies were accompanied by systematic ultrasonic tests using the phased‐array technique, which were also used for the development of an inspection method for these complex weld geometries. Based on the results achieved by these experimental studies and additional numerical and statistical investigations, a proposal for a German design guideline (DASt‐Richtlinie 029) was finally elaborated to promote the practical implementation of trusses made up of CHS with thick‐walled chords and also to take a first step towards standardization.","PeriodicalId":54183,"journal":{"name":"Steel Construction-Design and Research","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48526712","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 behaviour of anchored extended blind bolts in concrete‐filled tubes 混凝土管中锚固扩展盲栓的性能研究
IF 1.6
Steel Construction-Design and Research Pub Date : 2022-05-01 DOI: 10.1002/stco.202100037
W. Tizani, Manuela Cabrera, Mohammed Mahmood, J. Ninić, Fangying Wang
{"title":"The behaviour of anchored extended blind bolts in concrete‐filled tubes","authors":"W. Tizani, Manuela Cabrera, Mohammed Mahmood, J. Ninić, Fangying Wang","doi":"10.1002/stco.202100037","DOIUrl":"https://doi.org/10.1002/stco.202100037","url":null,"abstract":"Extended Hollo‐Bolts (EHBs) are blind bolts that have an extended bolt shank ending in an anchor nut. When used with concrete‐filled tubes, the extension and the anchor in the concrete serve to enhance significantly the performance of both connection components: bolts in tension and tube face in bending. The enhancements are a result of confining the concrete, preventing local buckling of the steel tube and allowing the blind bolt to achieve a tensile strength equal to that of standard bolt+nut fasteners. Overall, the use of the EHB results in a moment‐resisting bolted connection to hollow sections which can achieve rigid behaviour under certain configurations. This paper summarizes research work done to date on such connections at the University of Nottingham. This includes experimental, numerical and analytical modelling. The aim of the work is to provide a fundamental understanding of the behaviour of anchored blind bolt connections to concrete‐filled columns, leading to the specification of appropriate design rules that allow the use of such bolted moment‐resisting connections in practice. The work has proposed analytical models for: connection stiffness, column face‐bending strength considering both single and group behaviour of bolt rows, anchored bolts in tension and anchored bolts under combined tension and shear.","PeriodicalId":54183,"journal":{"name":"Steel Construction-Design and Research","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49243371","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: 3
Stabilization of thin‐walled profiles under uplift loads 抬升荷载作用下薄壁型材的稳定
IF 1.6
Steel Construction-Design and Research Pub Date : 2022-05-01 DOI: 10.1002/stco.202270204
{"title":"Stabilization of thin‐walled profiles under uplift loads","authors":"","doi":"10.1002/stco.202270204","DOIUrl":"https://doi.org/10.1002/stco.202270204","url":null,"abstract":"Sandwich panels are able to support their sub-structure against failure due to loss of stability. Especially for thin-walled Z-profiles used in lightweight metal construction as purlins, customary span-lengths often only can be reached by taking into account stabilization effects, which can be described as a combination of diaphragm and torsional restraint. However, for the load combination of dead weight and wind suction, the diaphragm is usually located on the flange under tensile stress, which means that only marginally stabilization effects can be added to the system. In addition, acc. to the German NA to DIN EN 1993-1-3, no stabilization due to a torsional restraint may be used for the aforementioned load combination. Recent investigations showed on the one hand that the reduction of the torsional restraint under uplifting loads stated in the literature is true, but on the other hand the investigations also provides a quantification of this reduction others than the rough engineering assumptions of 100 % to 50 % reduction often used in the past. Thus, a qualified estimation of the applicable torsional restraint under uplifting loads is possible, based on component tests and FE-calculations and derived from a mechanical model. The paper describes the scientific background as well as the mechanical model. Krieglstein, T.; Lener, G.; Naujoks, B.; Kühn, B. (2022) Stabilisierung von ZKantprofilen unter abhebenden Lasten. Stahlbau 91, H. 3, S. 162–171. https://doi.org/10.1002/stab.202100100 Stabilization of thin-walled profiles under uplift loads E D I T O R ’ S R E C O M M E N D A T I O N S","PeriodicalId":54183,"journal":{"name":"Steel Construction-Design and Research","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45152574","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
Passion for Hollow Sections 对空心型材的热爱
IF 1.6
Steel Construction-Design and Research Pub Date : 2022-05-01 DOI: 10.1002/stco.202280003
{"title":"Passion for Hollow Sections","authors":"","doi":"10.1002/stco.202280003","DOIUrl":"https://doi.org/10.1002/stco.202280003","url":null,"abstract":"","PeriodicalId":54183,"journal":{"name":"Steel Construction-Design and Research","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49383634","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
Hybrid connection technologies for hollow sections in steel construction 钢结构空心截面的混合连接技术
IF 1.6
Steel Construction-Design and Research Pub Date : 2022-05-01 DOI: 10.1002/stco.202100048
T. Ummenhofer, Jakob Boretzki, M. Albiez
{"title":"Hybrid connection technologies for hollow sections in steel construction","authors":"T. Ummenhofer, Jakob Boretzki, M. Albiez","doi":"10.1002/stco.202100048","DOIUrl":"https://doi.org/10.1002/stco.202100048","url":null,"abstract":"Circular hollow sections (CHS) offer a variety of constructional and architectural advantages. Up to now, hollow section structures have usually been connected by welding, and more rarely by bolting. However, these established connection methods have disadvantages. Despite its great success in the mobility sector, adhesive bonding is not yet used for joining hollow steel sections in steel construction. Adhesive bonding, however, has significant advantages, especially if combined with classical joining processes. To highlight these advantages, this article presents excerpts from the results obtained in two recently completed research projects. First, a hybrid brace connection for hollow section framework structures is presented which combines welding, bolting and adhesive bonding methods. In addition, the loadbearing behaviour of a novel hybrid grouted connection, which advantageously combines adhesive and grout materials, is analysed and discussed in this paper.","PeriodicalId":54183,"journal":{"name":"Steel Construction-Design and Research","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45853232","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: 1
Parametric analysis of steel MRFs with self‐centring column bases 具有自定心柱基的钢mrf的参数分析
IF 1.6
Steel Construction-Design and Research Pub Date : 2022-04-27 DOI: 10.1002/stco.202100050
Annarosa Lettieri, Elena Elettore, Ludovica Pieroni, F. Freddi, M. Latour, G. Rizzano
{"title":"Parametric analysis of steel MRFs with self‐centring column bases","authors":"Annarosa Lettieri, Elena Elettore, Ludovica Pieroni, F. Freddi, M. Latour, G. Rizzano","doi":"10.1002/stco.202100050","DOIUrl":"https://doi.org/10.1002/stco.202100050","url":null,"abstract":"Nominated for Eurosteel 2021 Best Paper Award","PeriodicalId":54183,"journal":{"name":"Steel Construction-Design and Research","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48932263","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: 3
Additive manufacturing of a bridge in situ 桥梁现场增材制造
IF 1.6
Steel Construction-Design and Research Pub Date : 2022-04-22 DOI: 10.1002/stco.202100045
Thilo Feucht, B. Waldschmitt, J. Lange, Maren Erven
{"title":"Additive manufacturing of a bridge in situ","authors":"Thilo Feucht, B. Waldschmitt, J. Lange, Maren Erven","doi":"10.1002/stco.202100045","DOIUrl":"https://doi.org/10.1002/stco.202100045","url":null,"abstract":"Nominated for Eurosteel 2021 Best Paper Award","PeriodicalId":54183,"journal":{"name":"Steel Construction-Design and Research","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46801574","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: 11
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