Journal of Constructional Steel Research最新文献_第2页

Seismic performance of an innovative cold-formed thin-walled steel–timber composite beam-column joint 一种新型冷弯薄壁钢木组合梁-柱节点的抗震性能

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-06-20 DOI: 10.1016/j.jcsr.2025.109742

Anling Zhang , Zhihua Chen , Jiadi Liu , Xiaowen Ma , Tianshu Chen

{"title":"Seismic performance of an innovative cold-formed thin-walled steel–timber composite beam-column joint","authors":"Anling Zhang , Zhihua Chen , Jiadi Liu , Xiaowen Ma , Tianshu Chen","doi":"10.1016/j.jcsr.2025.109742","DOIUrl":"10.1016/j.jcsr.2025.109742","url":null,"abstract":"<div><div>Fast-growing timber has a short growth cycle, wide distribution, and abundant reserves, making it suitable for extensive application in building structures. However, due to its low strength, numerous defects, and high dispersion, it is not suitable for direct use as a structural material. Based on the ideology of improving the mechanical properties of fast-growing timber using cold-formed thin-walled steel, this paper proposes an innovative cold-formed thin-walled steel–fast-growing timber composite beam-column joint. Pseudo-static tests are conducted on 6 joints to study their failure modes, stiffness degradation, strength degradation, ductility and energy dissipation. The results show that the addition of stiffener rib to the joint can increase the positive and negative load-bearing capacities of the joint by 65.06 % and 94.04 %, respectively. The hysteretic response analysis and parametric analysis of the joints are conducted using ABAQUS finite element software. The results indicate that increasing the length of the stiffener rib, the diameter of the screws, and the thickness of the L-shaped steel are effective measures to enhance the seismic performance of the joints. The simplified spring unit model of the joint is established using the component method to calculate the initial rotational stiffness of the joint. Based on different failure modes of the joints, the calculation method for the flexural bearing capacity of the joints is established. The theoretical results can reflect the mechanical performance of the joints, providing a reliable design basis and reference for the design and application of the joints.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"234 ","pages":"Article 109742"},"PeriodicalIF":4.0,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144330334","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

Post-fire residual yield strength and ultimate strength of structural steel SS275 considering load ratios 考虑荷载比的SS275结构钢火灾后残余屈服强度和极限强度

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-06-20 DOI: 10.1016/j.jcsr.2025.109745

Hyeong Jun Kim , Chang-Hwan Lee , Yonghyun Cho , Min Jae Park

{"title":"Post-fire residual yield strength and ultimate strength of structural steel SS275 considering load ratios","authors":"Hyeong Jun Kim , Chang-Hwan Lee , Yonghyun Cho , Min Jae Park","doi":"10.1016/j.jcsr.2025.109745","DOIUrl":"10.1016/j.jcsr.2025.109745","url":null,"abstract":"<div><div>Fire is one of the most significant hazards to steel structures. For fire-exposed steel structures, assessing reusability and reliability before dismantling is crucial to determine the most cost-effective course of action—whether to reuse, repair, strengthen, or demolish and rebuild. This study establishes indicators of residual strength for fire-exposed steel, essential for evaluating structural conditions prior to dismantling. Fire tests were conducted on SS275 steel, widely used in South Korean construction, simulating real fire scenarios with constant loads applied during heating and cooling phases. Test temperatures were 540 °C, 650 °C, and 900 °C, with load ratios up to 30 %, considering allowable stress and safety factors. The residual strength of SS275 varied with exposure temperature and load ratio. At 540 °C, residual yield strength increased by up to 13 % as the load ratio increased from 0 % to 30 %, with minimal impact on residual ultimate tensile strength. However, at 650 °C, raising the load ratio from 0 % to 20 % reduced the residual yield strength by up to 20 % and ultimate tensile strength by 19 %. Results were compared with previous studies on structural steels, highlighting the influence of stress levels during fire exposure on post-fire residual strength. These indicators provide critical data for structural engineers to make safe and cost-effective decisions regarding the reuse, repair, or dismantling of fire-damaged steel structures.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"234 ","pages":"Article 109745"},"PeriodicalIF":4.0,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144330335","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

Axial compressive behavior of stiffened spontaneous combustion coal gangue concrete-filled steel tubular column 加筋自燃煤矸石钢管混凝土柱轴压特性研究

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-06-20 DOI: 10.1016/j.jcsr.2025.109744

Jiaqi Jiang , Haiqing Liu , Jinli Wang

{"title":"Axial compressive behavior of stiffened spontaneous combustion coal gangue concrete-filled steel tubular column","authors":"Jiaqi Jiang , Haiqing Liu , Jinli Wang","doi":"10.1016/j.jcsr.2025.109744","DOIUrl":"10.1016/j.jcsr.2025.109744","url":null,"abstract":"<div><div>This paper initially conducted axial compression tests on 22 spontaneous combustion coal gangue concrete filled steel tubular (SCGCA-CFST) specimens. The primary variables investigated include the substitution ratio of spontaneous combustion coal gangue coarse aggregate (SCGCA), the presence or absence of stiffeners, the longitudinal spacing between stiffeners, and the diameter of stiffeners, in order to investigate the axial compressive behavior of stiffened SCGCA-CFST. The findings reveal that while stiffeners have a minimal impact on the failure mode and the pre-peak trend of the load-axial nominal strain curve, they significantly influence the post-peak curve. Additionally, although the stiffeners exert a limited effect on the strength of SCGCA-CFST, they notably enhance its ductility and reduce both the peak value and growth rate of the transverse deformation coefficient. Furthermore, a modified constitutive model was proposed and validated against previous studies and experimental results from this study, followed by a more comprehensive parametric analysis by finite element model. Ultimately, a simplified formula for the bearing capacity of stiffened SCGCA-CFST stub column was proposed. The mean prediction accuracy was 0.99 with a standard deviation of 0.1, indicating higher accuracy compared to previous calculation methods. This study applies stiffeners to SCGCA-CFST, further advancing the engineering application of spontaneous combustion coal gangue concrete and providing both theoretical and experimental foundations.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"234 ","pages":"Article 109744"},"PeriodicalIF":4.0,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321713","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

Mechanical behavior of structural steel clad by wire arc thermal spraying 电弧热喷涂覆层结构钢的力学性能

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-06-20 DOI: 10.1016/j.jcsr.2025.109748

Eitaro Horisawa , Masahide Matsumura , Risa Matsumoto , Tatsuya Tanimoto , Kunitomo Sugiura , Chihiro Morita

{"title":"Mechanical behavior of structural steel clad by wire arc thermal spraying","authors":"Eitaro Horisawa , Masahide Matsumura , Risa Matsumoto , Tatsuya Tanimoto , Kunitomo Sugiura , Chihiro Morita","doi":"10.1016/j.jcsr.2025.109748","DOIUrl":"10.1016/j.jcsr.2025.109748","url":null,"abstract":"<div><div>Thermal spraying is a surface modification technique in which molten particles are deposited to form protective or functional coatings. This study investigated the mechanical behavior of structural steel components strengthened by wire arc thermal spray cladding. The thermal spraying process was performed using martensitic stainless steel wire to achieve a target cladding thickness of approximately 5 mm. Tensile, compression, and bending tests were conducted to evaluate the mechanical performance of the cladding under various loading conditions. The cladding exhibited a Young's modulus of 70 GPa, approximately one-third that of bulk steel. The tensile strength of the cladding was estimated at 231 MPa, with brittle fracture occurring at a strain of 0.3 %. Despite its limited tensile ductility, the cladding contributed to an increase in axial stiffness in the elastic range. In contrast, under compression, the cladding exhibited ductile nonlinear behavior and failed by vertical cracking. The 0.2 % proof stress of the cladding in compression was 1.3 times that of the substrate, indicating adequate load-bearing capacity under compressive stress. In bending tests, the maximum load of clad steel plates was five times that of unclad steel plates, although cracking and debonding of the cladding were observed. These findings suggest that cladding applied by thermal spraying has mechanical characteristics suitable for structural applications, particularly under compressive stress.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"234 ","pages":"Article 109748"},"PeriodicalIF":4.0,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321659","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

Steel reuse for sustainable design of large-span structures: The case of gridshells 大跨度结构可持续设计中的钢材再利用：以格壳为例

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-06-20 DOI: 10.1016/j.jcsr.2025.109743

Fabrizio Ascione, Francesco Esposito, Diana Faiella, Elena Mele

{"title":"Steel reuse for sustainable design of large-span structures: The case of gridshells","authors":"Fabrizio Ascione, Francesco Esposito, Diana Faiella, Elena Mele","doi":"10.1016/j.jcsr.2025.109743","DOIUrl":"10.1016/j.jcsr.2025.109743","url":null,"abstract":"<div><div>Gridshells are lightweight spatial structures widely used for large-span constructions, offering high structural efficiency with minimal material usage. A key challenge in their sustainable design is integrating reclaimed steel elements to reduce environmental impact while maintaining structural performance. This study addresses this challenge by developing a stock-constrained optimization method, tested within the FreeGrid benchmark (<span><span>https://sites.google.com/view/freegrid/home</span><svg><path></path></svg></span>), to maximize the reuse of steel members while ensuring mechanical feasibility. A barrel vault gridshell is used as a case study with different grid configurations. The global performance is evaluated using three performance metrics, accounting for structural response, sustainability, and buildability. Due to the computational complexity of nonlinear analyses, a simplified method based on the Merchant-Rankine formula is introduced to estimate structural performance. The optimal solutions incorporating reused elements (ReBGs) are subsequently validated through geometrically and materially nonlinear analysis (GMNA) to verify their reliability. The results demonstrate that gridshells incorporating reclaimed steel achieve greater sustainability performance compared to conventional designs (BGs) while maintaining good structural performance. However, the irregular geometries generated during optimization negatively affect buildability, emphasizing the need for additional constraints in future developments. This study highlights that integrating reclaimed steel into gridshell design within the FreeGrid framework can effectively reduce environmental impact while ensuring structural efficiency, paving the way for broader applications in sustainable construction.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"234 ","pages":"Article 109743"},"PeriodicalIF":4.0,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321714","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

Eccentric compression behaviour of precast H-shaped steel support in foundation pit engineering 基坑工程中预制h型钢支架的偏心受压特性

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-06-20 DOI: 10.1016/j.jcsr.2025.109740

Yinjie Lu , Shuting Liang , Xiaojun Zhu , Dongyue Wu , Jian Yang , Wenkang Wang , Bowei Sun

{"title":"Eccentric compression behaviour of precast H-shaped steel support in foundation pit engineering","authors":"Yinjie Lu , Shuting Liang , Xiaojun Zhu , Dongyue Wu , Jian Yang , Wenkang Wang , Bowei Sun","doi":"10.1016/j.jcsr.2025.109740","DOIUrl":"10.1016/j.jcsr.2025.109740","url":null,"abstract":"<div><div>To clarify the key performance of precast H-shaped steel support structures and promote the development of green, low-carbon foundation pit support systems, compression tests were conducted on recyclable and reusable H-shaped steel support single-leg specimens, including two concentrically-loaded specimens and two eccentrically-loaded specimens. A reliable finite element analysis model was established for parametric analysis. The failure modes, load-displacement curves, deflection curves, and strain responses of the specimens were analysed based on experimental and finite element analysis results. The results indicated that the failure modes of the specimens under both axial and eccentric compression were similar, with increased lateral deformation leading to overall instability. Local buckling occurred at the outer H-shaped steel flange of the spliced node. The outermost bolts of the cover plate and the end plate bolts were at risk of breaking, when the support segment became unstable. Eccentrically-loaded specimens with a 50-mm eccentricity exhibited lower ultimate strength and higher out-of-plane deformation compared to concentrically-loaded specimens. Considering the major-axis eccentricity, the critical stable load decreased by 14.74 % and the out-of-plane deformation increased by 40.58 %. Considering the minor-axis eccentricity, these values were 48.84 % and 340.71 %, respectively. The parametric analysis also revealed that the length, section size, and eccentricity were the primary factors affecting the stiffness and ultimate strength of the support segments. The interaction equations for flexure and compression in the developed codes were applicable to support segments, and Eurocode 3 was more suitable than AISC360 and GB50017–2017.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"234 ","pages":"Article 109740"},"PeriodicalIF":4.0,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321712","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

Experimental study on fracture toughness of Q460D steel and ER55-G welds Q460D钢与ER55-G焊缝断裂韧性试验研究

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-06-19 DOI: 10.1016/j.jcsr.2025.109728

Fangfang Liao , Mengqi Yang , Bo Guo , Xian Liu , Xin Cheng , Fei Yang , Shukai Tang

{"title":"Experimental study on fracture toughness of Q460D steel and ER55-G welds","authors":"Fangfang Liao , Mengqi Yang , Bo Guo , Xian Liu , Xin Cheng , Fei Yang , Shukai Tang","doi":"10.1016/j.jcsr.2025.109728","DOIUrl":"10.1016/j.jcsr.2025.109728","url":null,"abstract":"<div><div>The aim of this study is to investigate the fracture toughness of Q460D high-strength steel and its corresponding ER55-G welds, and verify the applicability of micromechanical fracture models in the fracture prediction of high-strength steel structures with initial defects. Compact tensile tests were conducted on the standard stepped notched compact tensile specimen (specimen CT) and the improved stepped blunt notched compact tensile specimen (specimen BN). Both types of specimens were manufactured by using Q460D high-strength steel and ER55-G welds. The <em>J-</em>∆<em>a</em> resistance curves and the critical fracture toughness values of specimens CT and the fracture displacements of specimens BN were obtained. The test results show that the welding direction had certain influences on the tensile bearing capacity, ductility, and fracture resistance of ER55-G welds. The finite element model of specimen CT was established by Contour Integral method in ABAQUS. The validity and rationality of the method were verified by the comparison with the test results. Meanwhile, the influence of the specimen thickness on the stress field at the crack tip and that of the material strength on the fracture toughness were studied. The calibrated void growth model (VGM) and the stress modified critical strain (SMCS) model were used to predict fracture of the compact tensile specimens. Compared with SMCS model, VGM could be used to reliably predict fracture of compact tensile specimens without initial defects. In addition, determination of the characteristic length was the key to apply the micromechanical fracture model to predict fracture of the compact tensile specimens.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"234 ","pages":"Article 109728"},"PeriodicalIF":4.0,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144314070","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

Experimental investigation of high-temperature mechanical and creep properties of high-strength steel Q500qE 高强度钢Q500qE高温力学和蠕变性能试验研究

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-06-19 DOI: 10.1016/j.jcsr.2025.109732

Bin Qiang , Dian Lei , Hong Yang , Di Xu , Jia Huang , Lei Wang , Yadong Li

{"title":"Experimental investigation of high-temperature mechanical and creep properties of high-strength steel Q500qE","authors":"Bin Qiang , Dian Lei , Hong Yang , Di Xu , Jia Huang , Lei Wang , Yadong Li","doi":"10.1016/j.jcsr.2025.109732","DOIUrl":"10.1016/j.jcsr.2025.109732","url":null,"abstract":"<div><div>This study investigates the high-temperature mechanical properties and creep behavior of high-strength steel (HSS) Q500qE. High-temperature tensile tests (20 °C–700 °C) were conducted to determine reduction factors for yield strength, elastic modulus, ultimate strength, and elongation at break. At 700 °C, yield strength, elastic modulus, and ultimate strength decreased by 80 %, 53 %, and 81 %, respectively, while elongation at break increased by 210 %. New predictive equations with high regression coefficients were developed to estimate these reduction factors. High-temperature creep tests at 400 °C–600 °C under stress ratios of 0.4–1.0 were analyzed using the Norton-Bailey model, calibrated through nonlinear fitting. Results indicate that increasing temperature and stress ratio accelerate creep strain and shorten creep life. At 600 °C, even with a low stress ratio of 0.5, the specimen entered the accelerating creep stage and fractured within 549 min. The proposed predictive equations and calibrated model offer reliable estimates of Q500qE's high-temperature performance, providing valuable guidance for its application in elevated-temperature environments.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"234 ","pages":"Article 109732"},"PeriodicalIF":4.0,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144314067","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

A comprehensive failure analysis of corroded high-strength steel pipelines under seismic-induced landslide 地震诱发滑坡作用下高强钢管道腐蚀破坏综合分析

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-06-19 DOI: 10.1016/j.jcsr.2025.109729

Wei Liu , Peng Zhang , Siming Liu , Yunfei Huang , Tian Xu , Ming Zhao

{"title":"A comprehensive failure analysis of corroded high-strength steel pipelines under seismic-induced landslide","authors":"Wei Liu , Peng Zhang , Siming Liu , Yunfei Huang , Tian Xu , Ming Zhao","doi":"10.1016/j.jcsr.2025.109729","DOIUrl":"10.1016/j.jcsr.2025.109729","url":null,"abstract":"<div><div>In this work, a nonlinear finite element (FE) model was developed to investigate the synergistic effect of corrosion and seismic-induced landslides on the failure behavior of high-strength steel pipelines. This work integrated a permanent ground deformation (PGD) function and uniform corrosion modeling methodology. The failure mechanism, process, and path of high-strength steel pipelines under the action of corrosion, internal pressure, and landslide displacement were investigated. Findings indicated that the landslide impact caused significant stress concentrations at the corrosion defect, triggering failure. The corroded pipeline exhibited 8–54 % higher maximum von Mises stress in comparison with the intact pipeline. Among the defect parameters, corrosion depth (<em>d</em>/<em>t</em> = 0.1–0.5) had a more substantial impact on the pipeline's structural integrity than corrosion length (<em>l</em>/<span><math><msqrt><mi>Dt</mi></msqrt></math></span>=0.5–2.5) and width (<em>CW</em> = 0.01–0.05). The combined effects of landslides, corrosion, and internal pressure further accelerated pipeline failure. Additionally, failure was most likely to occur at the defect site when the defects was located circumstantially at the landslide-opposing side (95<sup>o</sup>), and axially at the shear area center or near the landslide area center. In other cases, the failure location shifted to a pipe's undamaged area at the landslide center.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"234 ","pages":"Article 109729"},"PeriodicalIF":4.0,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144314068","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

Plug-in seismic isolation joints in modular steel structures: Experimental and numerical evaluation 组合式钢结构插入式隔震缝：试验与数值评估

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-06-19 DOI: 10.1016/j.jcsr.2025.109673

Junfen Yang , Tianmeng Tong , Zhuang Liu , Panpan Liu

{"title":"Plug-in seismic isolation joints in modular steel structures: Experimental and numerical evaluation","authors":"Junfen Yang , Tianmeng Tong , Zhuang Liu , Panpan Liu","doi":"10.1016/j.jcsr.2025.109673","DOIUrl":"10.1016/j.jcsr.2025.109673","url":null,"abstract":"<div><div>This paper introduces an insertable seismic-isolation and energy-dissipation connection joint tailored for modular steel structure buildings. To explore the seismic isolation and energy-dissipation performance of this innovative joint, cyclic loading tests were conducted on a two-story steel frame model equipped with the proposed joints. This study systematically analyzed the deformation patterns and seismic behaviors of the joints and established a mechanical model through theoretical analysis. The test results show that the proposed joints exhibit excellent energy dissipation and damping capabilities, which enables them to enhance the seismic resistance of modular steel structures effectively. In addition, the ETABS software was used to conduct modal decomposition response spectrum analysis and time-history analysis on a modular building. The simulation results show that introducing seismic isolation joints increases the average natural period of the structure under seismic action by 244%. Further analysis reveals that the isolation structure has a more significant damping effect on the lower floors compared to the non-isolation structure, and the damping effect under rare earthquakes is better than that under design earthquakes. Although the calculation results of the time-history analysis method are more conservative than those of the modal decomposition response spectrum method, both methods indicate that the new seismic isolation joints have a significant damping effect and can effectively improve the seismic performance of the structure under seismic action.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"234 ","pages":"Article 109673"},"PeriodicalIF":4.0,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144314071","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