Journal of Constructional Steel Research最新文献_第3页

Bending behavior of self-locking and rapid-unlocking inter-module connection for demountable modular steel construction 可拆卸模块化钢结构自锁快速解锁模块间连接的弯曲性能

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2026-05-01 Epub Date: 2026-02-04 DOI: 10.1016/j.jcsr.2026.110259

Jun-Yi Lian , Wen-Yuan Zhang , Wensu Chen

{"title":"Bending behavior of self-locking and rapid-unlocking inter-module connection for demountable modular steel construction","authors":"Jun-Yi Lian , Wen-Yuan Zhang , Wensu Chen","doi":"10.1016/j.jcsr.2026.110259","DOIUrl":"10.1016/j.jcsr.2026.110259","url":null,"abstract":"<div><div>Modular steel construction (MSC) has emerged as a promising solution to address the increasing demands for temporary and transitional buildings. However, existing inter-module connections face challenges in balancing self-locking performance and disassembly efficiency, which greatly limits the full potential of MSC. A new self-locking and rapid-unlocking (SelRU) connection recently proposed by the authors has demonstrated its excellent connectivity, assembly/disassembly functionality, and reusability potential. Nevertheless, the understanding of its fundamental mechanical behavior, particularly its bending performance, remains limited. To address this gap, this study first investigated the bending performance of the SelRU connection through two full-scale four-point cyclic bending experiments, with disassembly operations carried out at critical loading stages. The experimental results show that the SelRU connection achieved higher yield moment, ultimate moment, and initial stiffness compared to four existing inter-module connections. Subsequently, finite element models were developed and validated against experimental results. The load transfer and failure mechanisms of the SelRU connection under bending were revealed by analyzing the distribution and development of von Mises stress as well as rupture index at critical sections of the bolt latch and lock cylinder. Finally, the effects of key parameters on the bending capacity and fracture risk of the connection were examined, including the diameter of the lock cylinder, the thickness of the bolt latch, and the angular deviation of the lock cylinder.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"240 ","pages":"Article 110259"},"PeriodicalIF":4.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Fire testing on axially compressed stainless-clad bimetallic steel columns with restraints 带约束的轴向压缩不锈钢包层双金属钢柱的防火试验

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2026-05-01 Epub Date: 2026-02-06 DOI: 10.1016/j.jcsr.2026.110280

Yiwen Wu , Yueshen Fan , Ziwei Zhao , Tong Xiao

{"title":"Fire testing on axially compressed stainless-clad bimetallic steel columns with restraints","authors":"Yiwen Wu , Yueshen Fan , Ziwei Zhao , Tong Xiao","doi":"10.1016/j.jcsr.2026.110280","DOIUrl":"10.1016/j.jcsr.2026.110280","url":null,"abstract":"<div><div>Stainless-clad bimetallic steel (SCBS) retains the superior mechanical properties of high-performance alloys while significantly reducing the consumption of alloying elements. Based on SCBS (304 + Q235), this study investigates the fire resistance of restrained SCBS columns under axial compression through systematic experimental work. A total of 18 tensile tests were conducted to evaluate the mechanical properties of SCBS covering the temperature range from 20 to 800 °C. Steady-state tests reveal that the stress–strain curve exhibits a clear elastic region and yield plateau at room temperature, whereas pronounced nonlinearity is observed at high temperatures. The two-stage and three-stage constitutive models proposed for SCBS (316 L + Q355B) provide good agreement with the tested stress–strain curves. Furthermore, this study presents the first fire tests on five restrained SCBS columns under axial compression, focusing on the effects of load ratio, axial restraint stiffness ratio and slenderness ratio. The experiments reveal the failure modes of the specimens and provide detailed records of furnace temperature, surface temperature, axial displacement and mid-span lateral displacement over time, as well as the critical buckling and failure temperatures of the columns. This work offers critical scientific support for the broader application of SCBS in structural engineering and the development of relevant design codes.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"240 ","pages":"Article 110280"},"PeriodicalIF":4.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Initial global imperfections of L-shaped double steel plate composite walls l型双钢板复合墙体的初始全局缺陷

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2026-05-01 Epub Date: 2026-02-05 DOI: 10.1016/j.jcsr.2026.110282

Yan Lang , Ying Qin , Tong Guo , Ganping Shu , Jiadi Liu , Zhonghua Liu , Xin Yan

{"title":"Initial global imperfections of L-shaped double steel plate composite walls","authors":"Yan Lang , Ying Qin , Tong Guo , Ganping Shu , Jiadi Liu , Zhonghua Liu , Xin Yan","doi":"10.1016/j.jcsr.2026.110282","DOIUrl":"10.1016/j.jcsr.2026.110282","url":null,"abstract":"<div><div>Truss-stiffened double steel plate concrete composite walls (DSPCWs) are susceptible to global geometric imperfections during fabrication, transportation, and concrete casting. Existing studies often approximate these imperfections using a first-order elastic buckling mode, but this approach lacks validation against real measurement data, especially for irregular cross-sections. This study systematically investigates initial geometric imperfections in L-shaped and I-shaped DSPCWs using 3D laser scanning. Two macro-scale deformation indicators—centroidal-axis deflection and principal-axis rotation—are introduced to characterize global imperfections. By integrating finite element buckling analysis with numerical fitting, a multi-mode superposition method is proposed to represent measured imperfections more accurately. Key findings include: (1) Both L- and I-shaped walls exhibit coupled deflection–torsion deformations, with the torsional component being particularly significant—the torsion-to-deflection ratio of the I-shaped specimen reaches 2.506, underscoring the inadequacy of single-mode approximations; (2) The contribution of buckling modes to imperfections depends on limb-width ratios, with higher-order modes becoming more influential in walls with smaller ratios; (3) While multi-mode imperfections significantly influence stability strength, especially in walls with small limb-width ratios, they do not alter the global failure mode. The proposed multi-mode model offers a mechanically sound and metrologically validated approach for imperfection simulation in stability analysis of irregular DSPCWs.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"240 ","pages":"Article 110282"},"PeriodicalIF":4.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Hysteretic behavior of a tandem self-centering double-stage yielding buckling-restrained brace 串联自定心双级屈服屈曲约束支撑的滞回特性

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2026-05-01 Epub Date: 2026-01-29 DOI: 10.1016/j.jcsr.2026.110254

Yongkang Kang , Bo Wen , Shuaishuai Ji , Alessio Fumagalli , Zhengyao Yu , Wen Xia

{"title":"Hysteretic behavior of a tandem self-centering double-stage yielding buckling-restrained brace","authors":"Yongkang Kang , Bo Wen , Shuaishuai Ji , Alessio Fumagalli , Zhengyao Yu , Wen Xia","doi":"10.1016/j.jcsr.2026.110254","DOIUrl":"10.1016/j.jcsr.2026.110254","url":null,"abstract":"<div><div>This paper proposes a tandem self-centering double-stage yielding buckling-restrained brace (TSCDY-BRB). A staged-stiffness restoring-force model and a three-dimensional finite element model are developed and validated against quasi-static tests, and reproduce the hysteretic response within about 15% error. The brace exhibits stable flag-shaped hysteresis, transitioning from a single-flag loop at small drifts to a flag with a second yielding plateau after the Group-2 cores engage. Parametric studies indicate that prestress sets the strength baseline and controls recentering; strand diameter influences post-activation stiffness; the Group-1 core area dictates initial strength, stiffness and low-amplitude energy dissipation; the Group-2 core area governs Stage II strength, stiffness and high-amplitude dissipation; and a larger preset gap delays Stage II activation, improving recentering but reducing damping. Within the studied range, single-cycle energy dissipation reaches 6.5–10.5 kJ, with an equivalent viscous damping ratio of 0.12–0.17, and the residual-to-peak displacement ratio remains below 3% with suitable prestress and gap. For design, an initial prestress about 1.5 times the combined yield force of the two core groups is recommended, and the preset engagement gap and the yield displacement of the Group-2 cores should be coordinated with the target peak displacement to ensure effective recentering and staged energy dissipation. System-level analysis of a six-story steel frame shows that, compared with a double-stage yielding BRB frame of identical initial properties, the TSCDY-BRB frame achieves much smaller residual drifts while maintaining comparable peak drifts under 0.2 g and 0.4 g excitations, confirming its effectiveness over different seismic levels.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"240 ","pages":"Article 110254"},"PeriodicalIF":4.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146057370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Shear behaviour of an innovative module-to-module connection for high-rise steel modular buildings 高层钢模块建筑创新模块对模块连接的剪切性能

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2026-05-01 Epub Date: 2026-02-07 DOI: 10.1016/j.jcsr.2026.110277

Yan Duan , Tianyao Ping , Ben Young , Wei Pan

{"title":"Shear behaviour of an innovative module-to-module connection for high-rise steel modular buildings","authors":"Yan Duan , Tianyao Ping , Ben Young , Wei Pan","doi":"10.1016/j.jcsr.2026.110277","DOIUrl":"10.1016/j.jcsr.2026.110277","url":null,"abstract":"<div><div>This study aimed to develop an innovative module-to-module (M2M) connection for high-rise steel modular buildings and examine its structural behaviour under shear loads. The M2M connection was developed based on the examination of the special characteristics of connections in high-rise steel modular buildings from the perspectives of construction efficiency and structural safety. Experimental tests with eight specimens were performed to investigate the shear behaviour of the developed connection. Numerical models were then established and validated base on the test results to accurately simulate the shear behaviour of the developed connection. Subsequent parametric numerical simulations with 153 models were performed to examine the effects of critical influencing factors on the shear behaviour of the connection. The analysis results indicated that the middle sleeve in the developed M2M connection can provide effective protection for the vertical connectors from horizontal loads. Furthermore, the identified critical influencing factors, such as the steel grade of different components and axial compression ratio, can facilitate the protection of the vertical connector across all loading stages, thereby ensuring the disassembly and reassembly ability of the developed connection. The axial compression ratio had the most significant effects on the shear behaviour of the connection, as it not only increased the yield and ultimate load of the connection by over 100%, but also exhibited significant interactive effects with the thickness of the connection plate and the steel grade of the middle sleeve and the connection plate.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"240 ","pages":"Article 110277"},"PeriodicalIF":4.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Trilinear self-centring offshore wind turbine structures: Insights and a nonlinear static procedure 三线性自中心海上风力涡轮机结构：见解和非线性静态过程

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2026-05-01 Epub Date: 2026-02-02 DOI: 10.1016/j.jcsr.2026.110266

Ke Ke , Minghong Teng , Xuhong Zhou , Xiuzhang He , Michael C.H. Yam , Huanyang Zhang

{"title":"Trilinear self-centring offshore wind turbine structures: Insights and a nonlinear static procedure","authors":"Ke Ke , Minghong Teng , Xuhong Zhou , Xiuzhang He , Michael C.H. Yam , Huanyang Zhang","doi":"10.1016/j.jcsr.2026.110266","DOIUrl":"10.1016/j.jcsr.2026.110266","url":null,"abstract":"<div><div>This paper proposed an innovative trilinear self-centring monopile offshore wind turbine (TSC-MOWT). The design concept and hysteretic model of the proposed TSC-MOWT were first presented. Subsequently, numerical models of the prototype structures were developed and validated through comparison with experimental results. The seismic performance of the prototype structures was assessed using cyclic pushover analyses and nonlinear response history analyses (NL-RHAs). The TSC-MOWT exhibited a trilinear flag-shaped hysteretic feature. This design enhanced structural ductility and energy dissipation capacity, while also significantly mitigating collapse risk under combined wind and seismic excitations. To facilitate the application of the TSC-MOWT in seismically active regions, a multi-modal nonlinear static analysis procedure was developed for seismic response estimation. The findings demonstrated that the proposed procedure provided satisfactory accuracy in estimating the seismic demands of the 2 MW TSC-MOWT, but it underestimated the segmental rotation demands of the 5 MW TSC-MOWT.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"240 ","pages":"Article 110266"},"PeriodicalIF":4.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Hysteretic behavior of a stainless steel energy-dissipating device with controllable deformation capacity 具有可控变形能力的不锈钢耗能装置的滞回特性

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2026-05-01 Epub Date: 2026-02-04 DOI: 10.1016/j.jcsr.2026.110257

Jianhuang Yan , Haifeng Li , Yang Xiang , Chan Huang , Di Wu , Jie Zheng

{"title":"Hysteretic behavior of a stainless steel energy-dissipating device with controllable deformation capacity","authors":"Jianhuang Yan , Haifeng Li , Yang Xiang , Chan Huang , Di Wu , Jie Zheng","doi":"10.1016/j.jcsr.2026.110257","DOIUrl":"10.1016/j.jcsr.2026.110257","url":null,"abstract":"<div><div>Stainless steel, characterized by excellent corrosion resistance, high toughness, and superior ductility, exhibits significant potential for structural seismic mitigation. In this paper, a stainless steel energy-dissipating device (SSED) with controllable deformation capacity is proposed. The structural characteristics of the SSED are introduced, and a simplified mechanical model is established. Low-cycle loading tests were conducted on ten SSED specimens, considering variables such as cantilever length, plate thickness, and material of the U-shaped steel plates, to elucidate the force mechanisms and failure modes. A refined finite element model of the SSED was developed and validated against the experimental results. Based on the parameter sensitivity analysis, design recommendations for U-shaped stainless steel plates are provided. Furthermore, an analytical method for estimating the skeleton curve of the SSED is proposed based on the improved Ramberg-Osgood model. The test results shows that damage of the SSED is concentrated on the U-shaped steel plate, mainly manifesting as plastic deformation, cracking, or fracture in the transition region between the cantilever and the connecting section. Compared with Q235 steel, the ultimate bearing capacity and cumulative energy dissipation of S304 stainless steel increased by 61.9% and 55.3%, respectively, demonstrating fuller hysteretic curves and superior energy-dissipation capacity. In addition, seismic response analyses indicate that the top displacement of a double-column steel bridge pier equipped with SSEDs is reduced by more than 30%, further confirming the excellent seismic mitigation performance of the SSED.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"240 ","pages":"Article 110257"},"PeriodicalIF":4.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Cut-out joint for steel truss suspension bridges: Constructability analysis and stiffness testing 钢桁架悬索桥切割接头：可施工性分析及刚度试验

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2026-05-01 Epub Date: 2026-02-07 DOI: 10.1016/j.jcsr.2026.110287

Zhenbei Liu , Taike Zhang , Bing Cui , Gaoyan Cui , Jingyu Lu , Yongjian Liu , Kun Wang , Chongyang Jia

{"title":"Cut-out joint for steel truss suspension bridges: Constructability analysis and stiffness testing","authors":"Zhenbei Liu , Taike Zhang , Bing Cui , Gaoyan Cui , Jingyu Lu , Yongjian Liu , Kun Wang , Chongyang Jia","doi":"10.1016/j.jcsr.2026.110287","DOIUrl":"10.1016/j.jcsr.2026.110287","url":null,"abstract":"<div><div>To address the segment division requirement of steel truss stiffening girders for long-span suspension bridges, the vertical cut-out joint was introduced. In this scheme, the integral joint was vertically divided, so the cut-out joint was created by connecting two semi-integral joints via high-performance connection systems. Two finite element models of suspension bridge were employed to analyze the hoisting process of girders. Meanwhile, the full-scale model tests were conducted to verify the construction feasibility, the rotational performance of joints, and the accuracy of two finite element models. The results demonstrate that the segment division by vertical cutting produces symmetric segments with uniform mass distribution and superior hoisting stability. This approach eliminates the need for splicing of diagonal members, thus simplifying construction. Full-scale tests reveal a 30% enhancement in the out-of-plane rotational stiffness of the cut-out joint compared to the integral joint. The splice plates of cut-out joint improve the bearing efficiency of the diagonal and reduce the risk of out-of-plane buckling in gusset. These findings confirm that the cut-out joint not only enhances structural performance but also significantly improves construction efficiency. This study provides a novel and practical design solution for segment division of long-span steel truss suspension bridges.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"240 ","pages":"Article 110287"},"PeriodicalIF":4.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effects of non-fire-rated floor/roof-to-wall connections on the fire behaviour of LSF walls 非防火等级的地板/屋顶-墙壁连接对低密度混凝土墙体防火性能的影响

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2026-05-01 Epub Date: 2026-02-04 DOI: 10.1016/j.jcsr.2026.110255

Son Tung Vy , Edward Steau , Mahen Mahendran

{"title":"Effects of non-fire-rated floor/roof-to-wall connections on the fire behaviour of LSF walls","authors":"Son Tung Vy , Edward Steau , Mahen Mahendran","doi":"10.1016/j.jcsr.2026.110255","DOIUrl":"10.1016/j.jcsr.2026.110255","url":null,"abstract":"<div><div>This research study focuses on light gauge steel framed (LSF) walls with non-fire rated floor/roof-to-wall connections made of steel bearers and cleats. The thermal behaviour of these LSF walls exposed to fire on one side was assessed first using a fire test of a small-scale cavity insulated LSF wall. A thermal finite element (FE) model was then developed and validated against the obtained fire test results. The thermal FE model was then modified to simulate the behaviour of full-scale LSF walls by including the effect of plasterboard joints in the walls. Using the temperatures of stud hot and cold flanges predicted by the modified thermal FE model and a sequentially coupled structural FE model developed for LSF walls without floor/roof-to-wall connections in a previous study, a modified sequentially coupled structural FE model was developed for LSF walls with floor/roof-to-wall connections made of steel bearers and cleats. FE analysis results showed that the connections with cleats located near the wall studs could lead to localised higher temperatures on stud flanges as well as localised failures in the wall studs, but without any premature collapse of the walls. For the connections with cleats located between the wall studs, temperatures and failure times of the wall studs were minimally affected. This paper presents the details of this study, its results and design recommendations for such LSF walls.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"240 ","pages":"Article 110255"},"PeriodicalIF":4.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Tension capacity of reinforced K-joint connecting rectangular tubes and plate 矩形管与板配筋k形接头的抗拉能力

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2026-05-01 Epub Date: 2026-02-03 DOI: 10.1016/j.jcsr.2025.110161

Pooya Saremi, Wei Lu, Jari Puttonen

{"title":"Tension capacity of reinforced K-joint connecting rectangular tubes and plate","authors":"Pooya Saremi, Wei Lu, Jari Puttonen","doi":"10.1016/j.jcsr.2025.110161","DOIUrl":"10.1016/j.jcsr.2025.110161","url":null,"abstract":"<div><div>The research deals with tension capacity of an axially loaded K-joint, which is isolated from a truss-floor where it connects rectangular tubular braces to plate chord and division plate. The study comprises experimental and numerical parts. Experiments were for validating the finite element (FE) modelling used for analysing with 1080 FE models the sensitivity of joint tension capacity to dimensions of its members and a brace inclination angle. The determining criterion for tension failure was 5 % averaged equivalent plastic strain (EPS) within a control volume (CV) that included brace side walls along welds. An experimentally validated width of CV was 0.2 times brace wall thickness. Among 1080 FE models, brace tension failure occurred if ratio of thicknesses between a brace wall and chord plate is smaller than 0.5 and a division plate is at least twice thicker than the brace wall. The brace and division plate should be wider than 25 % and 35 % of chord width, respectively. These ratios guide to select braces and a division plate appropriately for a truss chord. Braces angled at 45° to chord gave the smallest tension capacity, and an angle of 30° led to a greater capacity than the 60° angle. Tension capacities were compared to the nominal joint capacities derived from the new Eurocode 1993-1-8:2024. On average, numerical results were 20 % greater than code-based capacities, but in some cases, the code gave capacities that were 93 % of numerical values. Modifications made for the Eurocode equations kept code-based capacities conservative regarding the FE results.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"240 ","pages":"Article 110161"},"PeriodicalIF":4.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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