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

Effect of Reinforcement on RC Column Using Polyurea and Honeycomb Steel Plate 使用聚脲和蜂窝钢板加固 RC 柱的效果

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2025-02-05 DOI: 10.1007/s13296-025-00937-9

Kyung-Mo Lim, Kab-Soo Kyung, Jin-Eun Park, Chang-Hoon Choi

{"title":"Effect of Reinforcement on RC Column Using Polyurea and Honeycomb Steel Plate","authors":"Kyung-Mo Lim, Kab-Soo Kyung, Jin-Eun Park, Chang-Hoon Choi","doi":"10.1007/s13296-025-00937-9","DOIUrl":"10.1007/s13296-025-00937-9","url":null,"abstract":"<div><p>Various methods, such as increasing the cross-section and attaching reinforcements, are employed for repairing and reinforcing old buildings. However, these methods have disadvantages, such as inefficient workability and poor appearance. Additionally, the aging rate of social infrastructure is rapidly increasing; however, the manpower required for its maintenance and reinforcement is decreasing. Therefore, simple maintenance and reinforcement methods are required. This study aimed to verify the effectiveness of repair and reinforcement using polyurea and honeycomb steel plate reinforcement methods, which were developed in response to these industrial and technical requirements. These experiments were carried out on the five different types of specimens considering reinforcement effects: 1) no consideration of reinforcements (control specimen, CC), 2) steel plate (SC), 3) integrated type honeycomb steel plates coated with polyurea (PHC1), 4) unit type honeycomb steel plates coated with polyurea (PHC2) and 5) carbon fiber (CFC). The column experiment focused on how the column’s behavioral characteristics change according to the type of reinforced material, rather than identifying the inherent behavior characteristics of the column. Therefore, in this study, the reinforcement effect of each specimen was investigated based on the non-reinforced specimen. In the experiment, the reinforcing effect on the column test object appears in the order of SC > PHC1 > PHC2 > CFC.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"25 2","pages":"571 - 580"},"PeriodicalIF":1.1,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143849027","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

Impact of Local Geometric Imperfections on Steel Columns Under Combined Axial and Lateral Cyclic Loading 轴、侧向联合循环荷载作用下钢柱局部几何缺陷的影响

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2025-02-04 DOI: 10.1007/s13296-025-00940-0

Mohsen Habelalmateen, Alaa M. Al-Habbobi, Nassr Salman

{"title":"Impact of Local Geometric Imperfections on Steel Columns Under Combined Axial and Lateral Cyclic Loading","authors":"Mohsen Habelalmateen, Alaa M. Al-Habbobi, Nassr Salman","doi":"10.1007/s13296-025-00940-0","DOIUrl":"10.1007/s13296-025-00940-0","url":null,"abstract":"<div><p>Steel sections are usually manufactured with geometric defects and deviates from the original ideal shape during rolling process; these defects are called imperfection in international standards. This study is devoted towards investigating local geometric imperfections of steel columns under combined effect of axial load and lateral cyclic displacements which simulates steel columns under seismic events. Ten wide flange sections with two cases for each section: ideal and imperfect. A comprehensive nonlinear finite element model which is validated against available experimental data in literature was employed. A sustained axial load which ranges from 20-100 percent of the maximum axial capacity for the column was applied prior to application of the designated lateral cyclic displacement amplitude. It was found that web local imperfection has a substantial impact on the cyclic response of the columns. It was also revealed that higher axial load ratios impact column response than do lower load ratios. Moreover, drift angle was found more susceptible in stocky than in light sections. The study showed that there is a limiting zone within the slenderness ratios for both of flanges and web should be avoided when considering section design of columns under seismic events because it yields a big difference between ideal and imperfect section.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"25 2","pages":"350 - 363"},"PeriodicalIF":1.1,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848959","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

An Experimental Investigation on Cold-Formed Steel C-Shaped Connectors Under Pull-Out Failures 冷弯型钢c型连接件拉拔失效试验研究

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2025-01-31 DOI: 10.1007/s13296-025-00941-z

Marzieh Obeydi, Iman Mohammadpoor Baltork, Mehran Zeynalian

{"title":"An Experimental Investigation on Cold-Formed Steel C-Shaped Connectors Under Pull-Out Failures","authors":"Marzieh Obeydi, Iman Mohammadpoor Baltork, Mehran Zeynalian","doi":"10.1007/s13296-025-00941-z","DOIUrl":"10.1007/s13296-025-00941-z","url":null,"abstract":"<div><p>Cold-formed steel C-shaped connectors are one of the most commonly used components in a connection e.g. track-to-stud connections which may be exposed to various destructive failure modes. This paper presents a detailed experimental study of 78 specimens to investigate the pull-out ultimate strength and force–displacement responses of C-shaped connectors subjected to tensile loading conditions. Effects of various design parameters were considered including plate thickness, screw diameter size, distance between the screw rows and formed corner of the C-shaped sections, number and arrangement of the screws, and internal screw rows. Then, a developed pull-out strength equation with a resistance reduction factor was proposed and the obtained results were compared against existing design standard equations. From the comparisons, the proposed equation can accurately predict the screw pull-out strength in C-shaped connectors’ webs. The results of this equation can be applied to analytical methods as mechanical characteristics of the component of C-shaped section’s web in tension or bending.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"25 2","pages":"449 - 461"},"PeriodicalIF":1.1,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848885","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

Ship-Bridge Collision Simulation and Performance Research of New Type Bridge Pier Protection Device 新型桥墩保护装置船桥碰撞仿真及性能研究

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2025-01-30 DOI: 10.1007/s13296-025-00938-8

Jianpeng Sun, Ruiqi Huang

{"title":"Ship-Bridge Collision Simulation and Performance Research of New Type Bridge Pier Protection Device","authors":"Jianpeng Sun, Ruiqi Huang","doi":"10.1007/s13296-025-00938-8","DOIUrl":"10.1007/s13296-025-00938-8","url":null,"abstract":"<div><p>To reduce the significant losses caused by ship collisions on bridges, in this paper, a new combined anti-collision device set on a bridge pier is proposed., taking the 26# pier of Mingzhu Bay Bridge as the engineering background. To study the anti-collision performance of the anti-collision device, the failure mode, peak impact load, system energy conversion, and dynamic response of the ship and pier during the collision process of each working condition were compared and analyzed by finite element modeling. The results show that when the shipping speed is 5 m/s, compared with the unprotected condition; the new anti-ship collision device reduces the peak collision force by 35.13% and prolongs the collision time by 191%. The maximum deformation of the bow is reduced by 92.04%, and the maximum internal energy of the pier and the hull is reduced by 40.93% and 87.66%, respectively. The anti-collision device can significantly reduce the peak impact force and prolong the collision duration. It has good energy absorption ability, reduces the damage of ships and piers during impact, and effectively protects bridges and ships.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"25 2","pages":"499 - 510"},"PeriodicalIF":1.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848993","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

Stochastic Seismic Responses of High-Speed Train–Bridge Systems with Ground Motion Correlation 考虑地震动相关性的高速列车-桥梁系统随机地震反应

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2025-01-29 DOI: 10.1007/s13296-025-00936-w

Chunyan Ma, Dong-Ho Choi

引用次数: 0

Vibration Based Damage Assessment of a Steel Frame Structure Using Support Vector Machine Algorithm 基于支持向量机算法的钢架结构振动损伤评估

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2025-01-20 DOI: 10.1007/s13296-024-00931-7

Deepti Ranjan Mohapatra, Bibhuti Bhusan Mukharjee, Subhajit Mondal

{"title":"Vibration Based Damage Assessment of a Steel Frame Structure Using Support Vector Machine Algorithm","authors":"Deepti Ranjan Mohapatra, Bibhuti Bhusan Mukharjee, Subhajit Mondal","doi":"10.1007/s13296-024-00931-7","DOIUrl":"10.1007/s13296-024-00931-7","url":null,"abstract":"<div><p>The structural damage detection system comes under the vast field of structural health monitoring. This paper deals with the two-stage damage assessment approach, including identification and severity estimation of any damage present in the structure. Free vibrational analysis of the healthy and damaged state of the structure yields two important modal parameters: frequency and mode shape. Eigenvectors, which constitute the mode shape of the structure, are considered for evaluating a damage index by comparing the damaged state with the healthy state. A Normalized Damage Index (NDI)is estimated for the structure subjected to various damage case scenarios. The novel method of estimating NDI provides a unique pattern for each element in the structure. The variation of natural frequency with increasing damage percentage helps estimate damage severity. Support Vector Machine(SVM), with a statistical pattern recognition paradigm, is an efficient supervised Machine Learning (ML) algorithm capable of performing classification and regression analysis. The Kernel-based SVM algorithm effectively identifies damaged elements and estimates each element's severity. A four-storey, three-bay steel frame structure developed in the OpenSees framework is subjected to modal analysis. The results are validated with SAP and finite element-based ABAQUS software. The ability of the proposed model is also verified for a complex 3D structure. The viability of this model is also explored experimentally with a four-storeyed and single-bay steel frame structure. This approach provides an effective way of damage assessment.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"25 2","pages":"329 - 337"},"PeriodicalIF":1.1,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848961","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

Numerical Investigation of Cold Roll-Forming Process for Three-Layer Metal Sheets and Al/ABS/Al Composites 三层金属板材及Al/ABS/Al复合材料冷滚压成形过程数值研究

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2025-01-20 DOI: 10.1007/s13296-025-00935-x

Ruixiao Qi, Sanming Sun, Shiqi Yan

引用次数: 0

Evaluation of Remaining Bending Resistance of Steel Column Base Plates Considering Effects of Metal Corrosion 考虑金属腐蚀影响的钢柱底板剩余抗弯性能评价

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2025-01-20 DOI: 10.1007/s13296-024-00933-5

Trong-Ha Nguyen, Ngoc-Giang Tran, Xuan-Bang Nguyen, Thi-Quynh Nguyen, Duy-Duan Nguyen

{"title":"Evaluation of Remaining Bending Resistance of Steel Column Base Plates Considering Effects of Metal Corrosion","authors":"Trong-Ha Nguyen, Ngoc-Giang Tran, Xuan-Bang Nguyen, Thi-Quynh Nguyen, Duy-Duan Nguyen","doi":"10.1007/s13296-024-00933-5","DOIUrl":"10.1007/s13296-024-00933-5","url":null,"abstract":"<div><p>Steel structures exposed to marine environments are vulnerable to corrosion, significantly deteriorating the structural capacity. Specifically, column base plates are crucial components in many steel structures, which are susceptible to corrosion-induced reduction in bending resistance. This study aims to evaluate the remaining bending resistance of steel column base plates considering the effects of metal corrosion. Three environmental conditions, which are rural, urban, and marine areas, were considered in the evaluation. Two proposed procedures were employed, in which the deterministic and random approaches were considered. The deterministic approach used the component method in EN 1993-1-8 to design the bending resistance of corroded steel column base plates. Meanwhile, the corroded steel structure’s reliability was evaluated using the hybrid Artificial Neural Network-Monte Carlo Simulation (ANN-MCS) method. The reliability of the steel column base plate up to 100-year life-service was evaluated. Moreover, Sobol’s indices were employed to calculate the sensitivity of the input variables. The results revealed that the structural capacity of the steel base plate was reduced by approximately 50% after 100 years in a strongly corrosive environment. The probability of safety of the steel base plate decreased significantly from the rural and urban areas to marine environments.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"25 2","pages":"486 - 498"},"PeriodicalIF":1.1,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848992","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

Spatial Stability Characteristics of Mono-symmetric Thin-Walled Beams with Deviators Pre-stressed by One Rectilinear Cable 一根直线索预应力偏心单对称薄壁梁的空间稳定性特性

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2025-01-18 DOI: 10.1007/s13296-024-00930-8

Fengping Zhang, Moon-Young Kim

引用次数: 0

HOBEM Computations for Wave-Induced Motion Responses and Connector Loads of a Modular Floating Island 模块化浮岛波浪运动响应和接头载荷的HOBEM计算

IF 1.1 4区工程技术

International Journal of Steel Structures Pub Date : 2025-01-10 DOI: 10.1007/s13296-025-00934-y

Hyo-Jin Park, Bo Woo Nam

{"title":"HOBEM Computations for Wave-Induced Motion Responses and Connector Loads of a Modular Floating Island","authors":"Hyo-Jin Park, Bo Woo Nam","doi":"10.1007/s13296-025-00934-y","DOIUrl":"10.1007/s13296-025-00934-y","url":null,"abstract":"<div><p>Modular floating islands are a promising option for ocean space utilization, offering affordability and sustainability. In this study, the motion response and connector load of a modular floating island in waves were numerically investigated based on potential flow theory. Numerical analysis was performed by adopting a Higher-order Boundary Element Method with the wave Green function. First, the motion response and connector loads of floating islands with different number of outer-module layers were studied. It was found that the single-layer island shows a significant advantage in terms of motion response and has a wider peak frequency range of the vertical load compared to the double-layers island. In addition, it was numerically confirmed that substantial horizontal connector loads can be induced by the horizontal motion responses associated with several dominant Eigen-modes of the floating island. Then, the effect of connector stiffness on the connector loads of the floating islands was also investigated. It was confirmed that the horizontal and vertical connector loads within the floating island can be reduced by adjusting the connector stiffness.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"25 1","pages":"306 - 314"},"PeriodicalIF":1.1,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13296-025-00934-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489444","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