International Journal of Steel Structures最新文献

{"title":"Capacity Fragility of Screw Connections installed in Cold-Formed Steel Partition Walls","authors":"Hyung-Joon Kim,&nbsp;Dong-Hyeon Shin","doi":"10.1007/s13296-024-00892-x","DOIUrl":"10.1007/s13296-024-00892-x","url":null,"abstract":"<div><p>The cold-formed steel partition walls (CFSPWs) consisting of steel framing and gypsum boards are usually damaged at shake intensities much lower than those required to initiate structural damages. In order to reduce earthquake-induced-loss on buildings, a better understanding of the seismic performance of CFSPWs is still required. The main purpose of this study is to quantitatively evaluate the capacity fragility of screw connections installed in cold-formed steel partition walls and to find out the effects of construction details on the seismic performance of CFSPWs. Based on the component tests for screw connections, physical responses and damage mechanisms of screw connections consisting of CFSPWs are investigated including the effects of screw spacing, edge distance, and layers of gypsum boards. A series of nonlinear analysis model is proposed to properly capture hysteretic behaviors of screw connection installed in CFSPWs and calibrated using component test results. The analytical data are then utilized to develop capacity fragility curves for CFSPWs in terms of drift as the representative engineering demand parameter.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"24 6","pages":"1380 - 1394"},"PeriodicalIF":1.1,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142190652","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}

{"title":"Study on Effective Length Factors of the Members in a Sustainable Assembled Steel Grid Shear Wall","authors":"Xiangyu Yan,&nbsp;Jiayi Guo,&nbsp;Zhihua Chen,&nbsp;Zhenyu Li,&nbsp;Mofan Zhang","doi":"10.1007/s13296-024-00886-9","DOIUrl":"10.1007/s13296-024-00886-9","url":null,"abstract":"<div><p>In recent years, prefabricated construction has emerged as a building form that addresses the issues including large amounts of construction waste, low resource utilization efficiency, and severe environmental pollution, which were caused by the traditional rough construction methods in the construction industry. It features efficient construction, high resource and energy utilization efficiency, and environmental friendliness, thus effectively promoting sustainable development of the construction industry. Steel grid shear walls (SGSW) are an efficient lateral force-resisting system that solves the problems of suboptimal housing quality and low level of component standardization and assembly when used in prefabricated residential construction. They offer advantages such as lightweight and standardized components, convenient fabrication and installation, high level of assembly, and easy post-earthquake repair, contributing to sustainable assembled structure forms. However, the stability of its grid components has not been deeply investigated and needs to be addressed. This study aimed to determine the effective length factor for steel grid members in SGSW. Firstly, an eigenvalue buckling analysis of the SGSW was conducted. The effective length factor of the steel grid member was calculated using Euler’s formula. The key variables were determined with the use of parametric analysis, based on which two computational formulas for the effective length factor of the steel grid member were established through fitting methods. To validate the calculation formulas, the stabilized bearing capacity of the steel grid member was estimated using nonlinear buckling analysis and compared with the exact solution. The results demonstrate that the fitted effective length factors performed better in terms of goodness of fit while the proposed effective length factor formulas can meet the safety requirements. These findings provide a theoretical basis for the design of the SGSW structure in the future, and establish a theoretical foundation for the development and application of SGSW in prefabricated constructions.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"24 5","pages":"1101 - 1112"},"PeriodicalIF":1.1,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142190655","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}

{"title":"Bolt Force Monitoring Method Used in Maglev Structure Maintenance Based on Radial Strain on the Surface of Bolt Head","authors":"Feng Ye,&nbsp;Yiming Xue,&nbsp;Yihong Yuan,&nbsp;Dongsheng Cao,&nbsp;Guofeng Zeng","doi":"10.1007/s13296-024-00877-w","DOIUrl":"10.1007/s13296-024-00877-w","url":null,"abstract":"<div><p>The high-strength bolts are used to connect the steel columns and steel rail beams at the maglev maintenance base. The intense vibration due to active control of the maglev train may lead to the loosening of these bolts. Monitoring bolt axial force without damaging or removing is a significant method for bolt loosening judgment and vehicle-rail coupling research. In this paper, the radial-strain-based bolt sensor is produced by affixing the strain gauges on the bolt head surface. The performance is explored through finite element analysis and laboratory experiments. The results indicate a strong linear relationship between radial strain and axial force. In addition, arranging the strain gauges at 90-degree intervals on a circular ring on the bolt head can effectively reduce the influence of lateral forces and bending moments. Furthermore, this method is put into practice on the maglev experimental line of Tongji University. The results show that this method can effectively capture the variations of bolt force, thus ensuring the safety of the structure. This study fills the gap of bolt monitoring in the field of maglev infrastructure maintenance.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"24 6","pages":"1347 - 1356"},"PeriodicalIF":1.1,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142190653","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}

{"title":"Influence of Graphene Oxide and Urea on Friendly Citric-Treated Stainless Steel for Surface Protection","authors":"Esraa Elkersh,&nbsp;Hanaa Soliman,&nbsp;Seham Shahin,&nbsp;Amira Khaled,&nbsp;Ibrahim Ghayad,&nbsp;Amal Ahmed","doi":"10.1007/s13296-024-00879-8","DOIUrl":"10.1007/s13296-024-00879-8","url":null,"abstract":"<div><p>Green technology induced variety approaches to improve the environmentally citric passivation process for steel by embedding additives. This work examined the impact of inorganic ceramic graphene oxide (GO) compared to organic Urea on steel passivation as a new insight. Both of them Urea and GO inhibited the corrosion current (i_<i>corr</i>), effectively isolated steel from a corrosive environment. Actually, the hybrid film (mix of organic citric and inorganic GO) provided a protective barrier due to the dominant role of the carboxylic groups in corrosive ions inhibition. Amino groups in Urea can form a stable complex that decays by Cl ions to yield a less protected surface. In conclusion, the development of sustainable coatings for steel is the future work to maximize its corrosion resistance.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"24 5","pages":"1031 - 1037"},"PeriodicalIF":1.1,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142190654","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}

{"title":"Numerical Analysis of Sectional Defective Steel Tube Repaired Using Multilayered CFRP Bonding Subjected to Axial Force or Bending","authors":"Morimune Mizutani,&nbsp;Toshiyuki Ishikawa","doi":"10.1007/s13296-024-00880-1","DOIUrl":"10.1007/s13296-024-00880-1","url":null,"abstract":"<div><p>Carbon-fiber-reinforced plastic (CFRP) bonding is a simple repair method for corroded steel tube members. In this study, stress analysis was performed on a sectional defective steel tube repaired using multilayered CFRP bonding. A simple model with full circumferential grooves was used as the sectional defect in the steel tube. In the proposed method, a continuous condition in which the shear displacement of the adhesive is equal at the boundary between the intact and defective sections was applied to the shear lag theory of the CFRP-bonded steel tube. In addition, a numerical analysis method using eigenvalues was applied to a sectional defective steel tube repaired using multilayered CFRP bonding. In this study, CFRP-bonded steel tubes were analyzed under axial and pure bending conditions. The numerical results of steel tube and CFRP were in agreement with the results of the finite element analysis in all cases.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"24 6","pages":"1357 - 1367"},"PeriodicalIF":1.1,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141925749","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}

{"title":"Average Compressive Stress–Strain Curves of Steel Plates for Bridges Under Axial Longitudinal Compression","authors":"Lunhua Bai,&nbsp;Ruili Shen,&nbsp;Quansheng Yan,&nbsp;Lu Wang,&nbsp;Rusong Miao,&nbsp;Buyu Jia","doi":"10.1007/s13296-024-00884-x","DOIUrl":"10.1007/s13296-024-00884-x","url":null,"abstract":"<div><p>Steel plates for welded steel bridge members typically supported on three or four edges. Average compressive stress–strain curves and ultimate strength are vital for assessing the stability of these plates. These metrics also form the foundation for developing beam-column models that account for local buckling. However, collecting this data presents significant challenges. This study comprehensively discusses the factors influencing the determination of average compressive stress–strain curves and ultimate strength for bridge steel plates under uniaxial longitudinal compression. Factors such as element type, mesh size, boundary conditions, solution method, the effect of plate thickness, and aspect ratio are discussed, leading to establish rigorous shell or solid finite element models. This investigation aids in standardizing steel plate analysis. Representative panels of bridge steel plates are investigated to establish the database of compressive stress–strain curves using the developed shell finite element model. A new formula is presented to predict the ultimate strength of these plates. This database supports the creation of a beam-column theoretical model incorporating local buckling to analyze bridge steel members with high efficiency.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"24 5","pages":"1083 - 1100"},"PeriodicalIF":1.1,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141926597","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}

{"title":"Experimental and Numerical Study on Behaviors of Double-shear Four-Bolted Connection with Austenitic Stainless Steel","authors":"Dongkeun Lee,&nbsp;Jinwoo Kim,&nbsp;KangSeok Lee,&nbsp;TaeSoo Kim","doi":"10.1007/s13296-024-00878-9","DOIUrl":"10.1007/s13296-024-00878-9","url":null,"abstract":"<div><p>It is well known that stainless steel has many advantages such as superb durability, ductility, and corrosion resistance. Thus, the use of stainless steel for various structural members in construction fields is recently increasing. Structural behaviors of bolted and welded connections, compressive and flexural members, beam-column joints, seismic devices etc. have been conducted experimentally and numerically and thus new design methods have been proposed. Hence, in this study, both experiment and finite element analysis were conducted to assess the block shear failure behaviors of double-shear four-bolted connections made of austenitic stainless steel (STS304) with thinner plate and larger end distance, which are beyond the range of previous literature. The main parameter was end distance and edge distance. Block shear strengths by parametric analysis and test results study were compared with design predictions. It is found that current design equations tended to significantly underestimated test and analysis results. Therefore, modified block shear strength equation was recommended for austenitic stainless steel double shear bolted connection treated in this study.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"24 5","pages":"1165 - 1177"},"PeriodicalIF":1.1,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947639","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}

{"title":"Investigation of the Fracture Behavior of High-Strength Structural Steel and Welds based on Micromechanical Models","authors":"XiYue Liu,&nbsp;Jia Yang,&nbsp;YuanQing Wang,&nbsp;YiCong Ye,&nbsp;JinGuang Li,&nbsp;Tong Sun","doi":"10.1007/s13296-024-00868-x","DOIUrl":"10.1007/s13296-024-00868-x","url":null,"abstract":"<div><p>To investigate the fracture initiation mechanisms and establish the relationship between the ductile fracture mechanism and macro stress–strain for high-strength structural steel, the mechanical response and fracture behavior of Q460C steel and its butt welds were studied via tests, numerical analysis and scanning electron microscopy (SEM) in this paper. The mechanical properties of high-strength steel (HSS) under different stress triaxialities were studied by uniaxial tensile tests on standard specimens and notched round rods. The finite element model is set up according to the characteristic length which is based on SEM observations. By combining experimental results and numerical simulations, the constitutive model and fracture prediction model were established. The relationship between the ductile fracture mechanism and the macro stress strain was obtained. The toughness parameters of the micromechanical model of Q460C steel and its welded joints were compared with those of Q345 steel and seven other types of structural steel from the United States and Japan. The results show that the characteristic length of the crack tip is the key factor affecting the accuracy of predicting fracture toughness under a large stress–strain gradient. The toughness predicted by the model is in good agreement with the traditional fracture toughness test results when taking the average value. The experimental results and finite element analysis verified the effectiveness of the VGM and SMCS micromechanical models in predicting the fracture toughness of Q460C steel and its welded joints, which can provide a theoretical basis and practical guidance for the anti-fracture design and application of HSS structures.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"24 4","pages":"947 - 957"},"PeriodicalIF":1.1,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881909","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}

{"title":"Flexural Analysis of Elastically Supported Bidirectional Monel–Zirconia Skew FGM Plate Subjected to Line Load Using Meshless Collocation Technique","authors":"Manish Chand Srivastava,&nbsp;Jeeoot Singh,&nbsp;H. K. Sharma","doi":"10.1007/s13296-024-00883-y","DOIUrl":"10.1007/s13296-024-00883-y","url":null,"abstract":"<div><p>In the present paper, the meshfree collocation technique is implemented for analyzing the bending behavior of bidirectional porous functionally graded material (BPFGM) plates resting on an elastic foundation in the framework of higher-order shear deformation plate theory (HSDT). The variation of material properties in both the thickness and length directions of skewed BPFGM plates will adhere to a modified power-law distribution, encompassing two different porosity distributions. The Meshless Collocation Technique (MCT) is based on Wendland radial basis functions (WRBF) and is used to discretize the governing differential equations (GDEs) obtained via energy principles. The accuracy and effectiveness of the MCT are verified by comparing the computed results with other numerical solutions reported by many researchers in the literature. Additionally, detailed parametric studies are carried out to investigate the effects of various factors on the flexural responses of BPFGM plates, including the grading index, plate length-to-thickness ratio, elastic foundation, aspect ratio, porosity index, porosity distribution, and the effect of transverse loading. Results demonstrate that the WRBF method can effectively predict the flexural behavior of BPFGM plates under different conditions. Overall, this paragraph provides a brief overview of the study's objectives, methodology, and findings, highlighting the development of a meshfree method based on radial basis functions for analyzing the flexural behavior of BPFGM plates and its effectiveness in predicting the plate's response under various conditions.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"24 5","pages":"1065 - 1082"},"PeriodicalIF":1.1,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881908","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}

{"title":"Effects of Stiffener Characteristics on the Performance of the Novel Grooved Gusset Plate Damper for Cross-Braced Frames: Numerical and Experimental Study","authors":"Mohammad Almohammad-albakkar,&nbsp;Farhad Behnamfar","doi":"10.1007/s13296-024-00882-z","DOIUrl":"10.1007/s13296-024-00882-z","url":null,"abstract":"<div><p>This research introduces a novel gusset plate damper designed to safeguard structures from intense seismic activity and enhance the performance of X-braced frames. The damper includes a grooved plate with multiple parallel steel strips, and cross braces segmented into four parts by the central grooved plate. Both sides of each brace segment, a set of strips is embedded within the gusset plate, oriented perpendicular to their corresponding brace axis. The X-braced frames equipped with grooved gusset plate damper (GGPD) were subjected to cyclic loading both experimentally and numerically. The experimental results demonstrated that the proposed system exhibits robust seismic performance. Employing ABAQUS, the calibration results demonstrated excellent agreement between the experimental and numerical outcomes, affirming the accuracy of the finite element method in predicting the cyclic behavior and fracturing patterns of this innovative system. Additionally, the study delved into the local buckling and the necessity of incorporating stiffeners for the grooved plate damper along their edges, evaluating their impact on the main characteristics of the new damper. The findings revealed that when appropriately reinforced at its edges, the proposed damper demonstrates excellent behavior and stable hysteretic curves. Moreover, decreasing the width-to-thickness ratios of steel stiffeners in the GGPD resulted in wider hysteresis loops. Findings indicated that a width-to-thickness ratio of 7 yields favorable outcomes for design parameters, including lateral elastic stiffness and ultimate strength.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"24 5","pages":"1051 - 1064"},"PeriodicalIF":1.1,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881910","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}