International Journal of Steel Structures最新文献_第2页

Buckling Strength of Cold-Formed Austenitic Stainless Steel SHS Columns Subjected to Concentric Axial Load

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2024-11-17 DOI: 10.1007/s13296-024-00916-6

Hyunsik Kang, TaeSoo Kim

{"title":"Buckling Strength of Cold-Formed Austenitic Stainless Steel SHS Columns Subjected to Concentric Axial Load","authors":"Hyunsik Kang, TaeSoo Kim","doi":"10.1007/s13296-024-00916-6","DOIUrl":"10.1007/s13296-024-00916-6","url":null,"abstract":"<div><p>A study on austenitic stainless steel (STS304 TKC and STS316 TKC) square hollow section(SHS) columns subjected to centrally axial compression has been conducted to investigate the buckling behaviors of the compression members with both fixed ends. Main variables are steel type, column length and width-thickness ratio. Buckling modes at ultimate state were classified into two such as local buckling and global buckling. Compressive material properties of SHS members was also investigated through stub column tests in addition to tensile material properties. Stub columns showed local buckling mode. A finite element (FE) analysis model of a stainless steel SHS column considering initial geometric imperfection and compressive material properties was developed, and the validity of the FE analysis procedure was verified through comparison with test results. The test buckling strengths were compared with the strengths predicted by current stainless steel design specifications (American Society of Civil Engineers (ASCE 8–22) and Eurocode (EC3)). As a result, it is found that design strengths with compressive material test data of stub column than those of tensile coupon were close to test buckling strength. The global buckling coefficients of ASCE 8–22 was the values presented for the compression members of open sections, and since it did not sufficiently reflect the buckling characteristics of the closed-section SHS members, some of the buckling coefficients were adjusted upward referring to the AISC 370–21 specification. The EC3 standard presented a value with the adjusted initial imperfection coefficient. It was confirmed that the predicted strength by the design equations with the modified coefficient was close to the test and analysis buckling strength.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"25 1","pages":"277 - 292"},"PeriodicalIF":1.1,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Conceptual Design of Floating Vertiport Anchored with Taut Mooring Lines 采用拉紧系泊线锚定的浮式垂直港概念设计

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2024-11-14 DOI: 10.1007/s13296-024-00920-w

Jeong-Gon Kim, Soomin Kim, Dohyun Choi, Joohyun Park, Ho-Kyung Kim

{"title":"Conceptual Design of Floating Vertiport Anchored with Taut Mooring Lines","authors":"Jeong-Gon Kim, Soomin Kim, Dohyun Choi, Joohyun Park, Ho-Kyung Kim","doi":"10.1007/s13296-024-00920-w","DOIUrl":"10.1007/s13296-024-00920-w","url":null,"abstract":"<div><p>Based on the current plans for Urban Air Mobility (UAM) in various nations, there is an increasing need for vertiport infrastructure in urban areas. Offshore floating vertiports have potential as they address the space constraints of land-based vertiports and can integrate with maritime transport. However, their susceptibility to environmental factors such as waves has limited their prior development. This study conducted a conceptual design to establish the physical properties and geometry of a floating vertiport. The design process focuses on ensuring stability against mooring breakage and securing UAM vertical take-off and landing stability, with quantitative target performance criteria. The dimensions of the floater were determined by referencing the vertiport design guideline established by Federal Aviation Administration. The response to wave loads was evaluated through hydrodynamic analysis, and the appropriate mooring system was selected. The selected designs, which meet the target performance criteria, were examined through <span>({T}_{p}-{H}_{s})</span> diagrams, confirming that appropriately designed floating vertiports could operate stably under significant wave height of up to 2 m.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"24 6","pages":"1463 - 1475"},"PeriodicalIF":1.1,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Analytical Solutions for Improved Box Girder Bridges with CSWs Considering the Interface Slip

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2024-11-14 DOI: 10.1007/s13296-024-00918-4

Jing Xu, Zhi-ren Zheng, Hua-hui Kong, Gui-feng He

引用次数: 0

Seismic Performance Evaluation of Raised Access Floor Systems Using the Shaking-Table Test 用振动台试验评价架空通道楼板抗震性能

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2024-11-12 DOI: 10.1007/s13296-024-00917-5

Jun-Young Kang, Bong-Ho Cho, Dam-I. Jung

{"title":"Seismic Performance Evaluation of Raised Access Floor Systems Using the Shaking-Table Test","authors":"Jun-Young Kang, Bong-Ho Cho, Dam-I. Jung","doi":"10.1007/s13296-024-00917-5","DOIUrl":"10.1007/s13296-024-00917-5","url":null,"abstract":"<div><p>Raised access floor systems are used in facilities with underfloor air distribution or heavy equipment, such as telecommunication systems. However, the seismic performance of these systems must be evaluated to ensure the safety of occupants. Thus, this study evaluates the seismic performances of R-type access floor systems in general offices. To this end, shaking table tests were performed on three R-type access floor systems (Korean Standard, KS F 4760) according to the ICC-ES AC156 standard, with floor acceleration applied horizontally in one direction. Three systems were designed in which the specimens were connected to the floor using adhesives, anchor bolts, and a new connecting system. This study aimed to analyze the dynamic behavior of the three R-type access floor systems as a function of the connection method between the access floor and the slab. Moreover, the damage limit state was defined based on the performance level. Results revealed that the specimen RT (adhesive connection between the R-type access floor and slab) achieved a life safety level at spectral acceleration, whereas RT-PA (adhesive and partially anchor bolts connection between the R-type access floor and slab) and RT-F (rail-supported system connection between the R-type access floor and slab) secured an operational level.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"24 6","pages":"1489 - 1500"},"PeriodicalIF":1.1,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A Method to Construct FE Model Simulating the Cyclic Behavior of High Strength WUF-W Connections 一种模拟高强度WUF-W连接循环性能的有限元模型构建方法

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2024-11-09 DOI: 10.1007/s13296-024-00919-3

Sang Whan Han, EunSeon Cho

引用次数: 0

Effect of Surface Morphology on Galvanic Corrosion Resistance at Welds after De-rusting

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2024-11-08 DOI: 10.1007/s13296-024-00915-7

Zhendong Li, Zhongqiu Fu, Longyu Wei, Yefei Li, Bohai Ji

{"title":"Effect of Surface Morphology on Galvanic Corrosion Resistance at Welds after De-rusting","authors":"Zhendong Li, Zhongqiu Fu, Longyu Wei, Yefei Li, Bohai Ji","doi":"10.1007/s13296-024-00915-7","DOIUrl":"10.1007/s13296-024-00915-7","url":null,"abstract":"<div><p>To study the effect of surface morphology on the corrosion resistance of weld after de-rusting, corrosion de-rusting tests, metallographic tests, and electrochemical tests were carried out. The relationship between surface morphology after de-rusting and the corrosion resistance at the weld was discussed. Based on the microstructure of the welding surface obtained by metallographic testing, a finite element model of weld corrosion was established to study the effect of the welding surface morphology on the galvanic corrosion process after de-rusting. The results show that the welding surface roughness significantly affects its corrosion resistance. The rougher the welding surface, the smaller the potential difference between it and the surrounding base metal, enhancing its corrosion resistance. Galvanic corrosion at the weld can make the surrounding base metal more susceptible to corrosion. However, this effect diminishes as the welding surface roughness increases. Consequently, during welding de-rusting, a moderate rise in welding surface roughness can effectively reduce its corrosive impact on the surrounding base metal.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"25 1","pages":"245 - 254"},"PeriodicalIF":1.1,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Mechanical Property Analyses of Two Types of Steel–Concrete Composite Track Beams

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2024-11-07 DOI: 10.1007/s13296-024-00909-5

Shen Yanli, Zhang Weijie, Du Peng, Liu Yuanyuan, Geng Zhuoqi

引用次数: 0

Experimental Study on Prestress Loss and Pull-out Behavior of Rock Bolts

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2024-11-01 DOI: 10.1007/s13296-024-00914-8

Bailing Chen, Haiyang Gao, Lianguang Wang, Yaosheng Zhang

{"title":"Experimental Study on Prestress Loss and Pull-out Behavior of Rock Bolts","authors":"Bailing Chen, Haiyang Gao, Lianguang Wang, Yaosheng Zhang","doi":"10.1007/s13296-024-00914-8","DOIUrl":"10.1007/s13296-024-00914-8","url":null,"abstract":"<div><p>For mountain wind power towers, the foundation adopts rock anchor foundation, which can fully utilize the bearing capacity of the bedrock and achieve the goal of shortening the construction period and saving investment. However, there is still few studies on the mechanical properties of prestressed wedge-grouted rock bolts (PWRBs). The research on rock bolts under prestressed conditions is also limited to scale experiments and steel casing experiments, lacking accurate and reliable on-site full-scale prestressed rock bolt pull-out test results and analysis. Therefore, field pull-out tests in weathered rock formations for prestressed grouted rock bolts (PGRBs) and PWRBs with lengths of 8.0 m, 10.5 m, and 13.0 m, respectively, were conducted to investigate the pull-out behavior and prestress loss of these two types of rock bolts. The test results show that the prestress loss ratio of two types of rock bolts is generally around 15%, and the maximum prestress loss ratio can reach 25%. Besides, the failure mode of two types of rock bolts was that the the steel bars fractured in the free section and were not pulled out. The pull-out bearing capacity of PWRBs is higher than that of PGRBs. Using the prestressed rock bolts with 8.0 m bolt length (6.0 m anchored length) to construct wind turbine tower foundation in strongly weathered rocks can meet the design requirements.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"25 1","pages":"233 - 244"},"PeriodicalIF":1.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Performance of Seismically-Compatible Fin Plate Joints under Fire Conditions 火灾条件下肋板接头抗震性能研究

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2024-10-28 DOI: 10.1007/s13296-024-00912-w

Gordon Chen, Anthony Abu, Gregory MacRae

{"title":"Performance of Seismically-Compatible Fin Plate Joints under Fire Conditions","authors":"Gordon Chen, Anthony Abu, Gregory MacRae","doi":"10.1007/s13296-024-00912-w","DOIUrl":"10.1007/s13296-024-00912-w","url":null,"abstract":"<div><p>This paper compares the performance of fin plate joints designed with and without seismic considerations under gravity loading and fire conditions. The non-seismic design, following British detailing provisions, has a thicker fin plate located higher on the beam web and it positions the beam web closer to the column face compared to the seismic design detail based on New Zealand provisions. Finite elements in ABAQUS are used to model the subassembly, which is subjected to the ISO 834 fire with and without a cooling phase. The analyses indicate the same failure mode in both subassemblies, with yielding at the beam web top bolt hole in bearing and fracture of the top bolt in shear. However, under the same fire regime, peak compressive and moment demands of the seismic detail were approximately 25% less than those for the non-seismic detail. When subjected to heating only, time to runaway failure was similar for the seismic and non-seismic detail, occurring at 15.0 and 14.8 min into the analyses respectively. When a cooling phase was included, beginning 10 min after initial fire exposure, both subassemblies recovered without failure. A parametric study showed a larger gap between the beam end and column face decreased compression in the beam but did not significantly affect the failure characteristics of the joint. Use of thicker fin plates was also found to increase the time to failure. The results show that the seismic detailing provides limited improvement over the non-seismic detail for the analysed fin plates.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"24 6","pages":"1454 - 1462"},"PeriodicalIF":1.1,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13296-024-00912-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on the Slip Model of Main Member Bar Connection of Transmission Tower Using Bolts

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2024-10-27 DOI: 10.1007/s13296-024-00913-9

Dehong Wang, Shifeng Hou, Yiming Ruan, Wenbin Li, Yanzhong Ju

引用次数: 0