Journal of Constructional Steel Research最新文献

{"title":"Room- and elevated- temperature material properties of structural fire-resistant weathering steel","authors":"Xianglin Yu ,&nbsp;Yongjiu Shi ,&nbsp;Yiu Kwong Pang ,&nbsp;Kwong Fai Lau","doi":"10.1016/j.jcsr.2025.109400","DOIUrl":"10.1016/j.jcsr.2025.109400","url":null,"abstract":"<div><div>The material behavior of structural component is critically important to resist the fire and other actions, especially for the structural parts directly exposed to fire. In this paper, the room- and elevated-temperature material properties of a newly developed fire-resistant weathering (FRW) steel with nominal yield strength <em>f</em>_y = 235 MPa are investigated by using an innovative heating method and conventional steady-state tensile testing method. The stress-strain curves and typical mechanical properties at elevated temperatures are obtained. Furthermore, the equations for reduction factors of Young's modulus, proof strength and tensile strength are proposed, and the thermal expansion characteristic parameters are determined via in-situ heating method. Based on the measured data, relevant equations for describing critical parameters are provided and compared with the available equations in the current standards. According to the experimental stress-strain curves and mechanical properties, the constitutive relationship at elevated temperatures based on the Ramberg-Osgood model is established and proposed. The goodness of fit for the stress-strain constitutive model is all above 96 %, which is consistent with the experimental curve. Therefore, the proposed constitutive model is sufficiently accurate for predicting the elevated-temperature stress-strain relationship of FRW steel. The research findings presented in this paper provide important reference for determining the material properties of FRW steel, and give valuable recommendation for the fire safety design of steel and composite structures.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"228 ","pages":"Article 109400"},"PeriodicalIF":4.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427952","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}

{"title":"Axial compression mechanical properties of UHTCC–hollow steel tube square composited short columns","authors":"Bing Wang ,&nbsp;Shuang Ma ,&nbsp;Yu-Peng Li ,&nbsp;Ning Wang ,&nbsp;Qing-Xin Ren","doi":"10.1016/j.jcsr.2025.109424","DOIUrl":"10.1016/j.jcsr.2025.109424","url":null,"abstract":"<div><div>To investigate the mechanical properties of ultrahigh toughness cementitious composite (UHTCC)–hollow steel tube square composite short columns under axial compression, axial compression tests were conducted on 10 composite short columns organized into five distinct groups. Parameters such as the size effect and hollow ratio were used to test the variation of ultimate load and ultimate strength. The interface microstructure was characterized through scanning electron microscopy and X-ray powder diffraction analyses. Variations in ductility, strength, and energy dissipation coefficients were assessed with respect to the selected parameters. A stress–strain constitutive model for the composite short columns was formulated. Furthermore, a finite element model was constructed using the ABAQUS software suite, and the simulation results were subsequently compared against the experimental findings. A design method for the ultimate load-carrying capacity of composite short columns was also developed. Experimental outcomes, coupled with microstructural analysis, indicated that under axial compression, the components exhibited effective collaborative deformation capacity. The load-bearing capacity of composite short columns increases with their increasing size, whereas their strength decreases with increasing size. The size effect exhibited a substantial impact on the strength, energy dissipation, and ductility coefficients, whereas the hollow ratio had a comparatively minor effect. The constitutive model demonstrated strong alignment with the experimental values. The effective constraint coefficient was derived by dividing the effective controlling area, which led to a calculation formula for determining the ultimate load-carrying capacity of a composite short column under axial compression. The experimental, simulated, and theoretical values exhibited a high degree of consistency.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"228 ","pages":"Article 109424"},"PeriodicalIF":4.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143421891","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}

{"title":"Comparison of seismic resilience of steel frame structure equipped with double-stage and conventional buckling-restrained braces","authors":"Qianxin Wen ,&nbsp;Linlin Xie ,&nbsp;Lei Zhu ,&nbsp;Cantian Yang ,&nbsp;Xinyu Wang","doi":"10.1016/j.jcsr.2025.109430","DOIUrl":"10.1016/j.jcsr.2025.109430","url":null,"abstract":"<div><div>An asynchronized parallel double-stage buckling restrained brace (APDBRB) is proposed to overcome the limitations of buckling restrained brace (BRB), emphasizing the concurrent control of seismic responses and resilience of steel frames (SFs) under both the design basis earthquake (DBE) and maximum considered earthquake (MCE). To identify these advantages, one SF, one SF equipped with BRB (SFBRB), and 15 SFs equipped with APDBRB (SFAPDBRBs) were analyzed. Significant improvements in structural seismic performance and resilience were observed using APDBRB. (1) APDBRB reduced the repair time of SF from 45.39 to a minimum of 8.5 d under DBE and from 90.95 to a minimum of 25.4 d under MCE, while those of SFBRB reached 17.88 and 52.76 d under DBE and MCE, mostly due to the effective control of absolute floor acceleration (MAFA) under DBE and maximum inter-story drift ratio (MIDR) under MCE.(2) APDBRB reduced the restoration cost of SF by up to 81.20 % under DBE and 58.93 % under MCE, which were significantly better than those of BRB (50.74 % under DBE and 47.31 % under MCE), realized by the concurrent control of MIDR and MAFA. (3) BRB improved the resilience level of SF from 0 to 1, whereas the resilience levels of the well-designed SFAPDBRBs reached Level 2.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"228 ","pages":"Article 109430"},"PeriodicalIF":4.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427951","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}

{"title":"Experimental investigation on the cyclic performance of corroded high-strength steel","authors":"Heng Liu ,&nbsp;Liang Zong ,&nbsp;Jinghong Xue ,&nbsp;Aosong Yang","doi":"10.1016/j.jcsr.2025.109420","DOIUrl":"10.1016/j.jcsr.2025.109420","url":null,"abstract":"<div><div>In this article, focused on the cyclic performance of corroded high-strength steel, experimental investigation was carried out. Accelerated corrosion tests were conducted with the method of the wet/dry corrosion cyclic tests to simulate the corrosion behaviour of structural steel in an industrial marine atmosphere, then variable strain amplitude cyclic tests were carried out on coupon specimens with a total of 4 corrosion degrees C0/1/2/3 obtained from the accelerated corrosion tests. The cyclic stress-strain curves, skeleton curves, and energy dissipation capacity for each corrosion degree were analyzed. The constitutive model of the corroded Q690D high-strength steel was established and validated with the finite element simulation. The results show that corrosion causes degradation of the specimen loading and unloading stiffness, and deteriorates the bearing capacity under cyclic loads and the energy dissipation capacity. The cyclic stress-strain curves of the simulated results agree well with those of the experimental results, indicating the validity of the established constitutive model of the corroded Q690D high-strength steel. The findings of this study can provide a reference for the cyclic behaviour of corroded high-strength steel and provide basic material data for conducting seismic performance analysis of high-strength steel structures after corrosion.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"228 ","pages":"Article 109420"},"PeriodicalIF":4.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427953","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}

{"title":"Research on fatigue crack propagation behavior and reliability evaluation of steel bridge","authors":"Junting Li ,&nbsp;Sanqing Su ,&nbsp;Wei Wang","doi":"10.1016/j.jcsr.2025.109421","DOIUrl":"10.1016/j.jcsr.2025.109421","url":null,"abstract":"<div><div>This paper conducted high-cycle fatigue tests on a typical welded structure of a steel bridge and monitored the fatigue crack growth behavior using the metal magnetic memory (MMM) technique. The change rule of the normal magnetic signal during fatigue was analyzed, and the maximum value of the magnetic signal gradient was selected as a characteristic parameter to describe the fatigue behavior of the specimens. Subsequently, a quantitative relationship between the fatigue crack growth length and the magnetic characteristic parameters was established. Based on the proposed relationship, sensitivity analyses of the magnetic characteristics, fatigue parameters were conducted, and a fatigue reliability study was carried out. The results indicated that the magnetic signal gradient value could better describe the fatigue behavior of the specimen. The errors between the predicted and tested crack lengths were within 16 %. The established fatigue reliability assessment method for steel bridges based on magnetic memory technology can accurately and timely determine the safety status of critical bridge components, thus helping formulate appropriate maintenance strategies.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"228 ","pages":"Article 109421"},"PeriodicalIF":4.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143421890","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}

{"title":"Seismic analysis of large-span CFST arch bridge considering the stress accumulation effect","authors":"Lihan Xu ,&nbsp;Lueqin Xu ,&nbsp;Jianting Zhou ,&nbsp;Maojun Yuan ,&nbsp;Ruihua Pan","doi":"10.1016/j.jcsr.2025.109432","DOIUrl":"10.1016/j.jcsr.2025.109432","url":null,"abstract":"<div><div>To investigate the effect of stress accumulation during construction process on the seismic response of large-span CFST arch bridges, the typical construction process and the resulting stress accumulation history in the CFST arch sections are first explained, and a static-dynamic sequence analysis method is then proposed considering the nonlinear properties such as material, geometry, and boundary conditions. In this method, the stress accumulation in the essential processes of empty steel tube erection and concrete placement through multiple working faces is modelled. Moreover, the effect of creep and shrinkage, which is activated at different concrete ages, can also be incorporated in this method. For comparison, two models were established with and without considering the effect of stress accumulation respectively. A comprehensive discussion is then conducted on the impact of stress accumulation on the seismic response of an illustrated arch bridge, focusing on three key aspects: the differences in peak response, the extent of response differences under different earthquake intensities, and the variation in the position of peak responses. Finally, three models are further developed to examine the impact mechanism of each of three core factors: steel tube erection, infilling concrete placement, and concrete shrinkage and creep. The research demonstrates that the construction process of large-span CFST arch bridges significantly influences the seismic analysis results. Neglecting the three core influencing factors leads to discrepancies in response values, shifts in peak response positions, and potential misjudgments of the structure's elastic-plastic behavior. This study provides a rational seismic analysis method for CFST arch bridges.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"228 ","pages":"Article 109432"},"PeriodicalIF":4.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427954","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}

{"title":"Development and validation of a model to calculate full-range response of bolted angle cleats in bending","authors":"Jingsheng Zhou ,&nbsp;Shen Yan ,&nbsp;Kim J.R. Rasmussen ,&nbsp;Gregory G. Deierlein","doi":"10.1016/j.jcsr.2025.109397","DOIUrl":"10.1016/j.jcsr.2025.109397","url":null,"abstract":"<div><div>This study investigates the full-range behaviour of bolted angle steel cleats, commonly used in beam-column connections of steel structural frameworks. Eight experiments were conducted on bolted angle cleats in bending with four different configurations. Complementary finite element simulation models were developed, incorporating a ductile fracture model, termed Lode angle modified void growth model (LMVGM). The proposed finite element model effectively captures cracking in the angle cleats under multi-axial stresses and plastic strains. Test and finite element analysis results showed that the bolt gauge dimensions of the legs of the angle connected to the column and beam flanges (referred to as the column leg and beam leg, respectively) affect the fracture location, which tends to initiate within the plastic hinge line that forms in the column or beam leg with the larger bolt gauge. Specifically, the bolt gauge dimension refers to the distance between the angle heel and bolt hole centre on either column or beam leg. Additionally, a measurable reduction in the angle plate thickness (up to 14 % reduction) was observed in the plastic hinges due to the presence of high tensile stresses resulting from the tensile membrane action developed in the transverse direction of each leg under large deformations. Based on observations from the tests and finite element simulations, a theoretical model is proposed to predict the full-range behaviour of angle cleats. The theoretical model incorporates the gradual formation of a plastic bending mechanism, nonlinear response due to material yielding and large-deformation response (membrane action), reductions in plate thickness and bending strength due to local plastic flow in the plate hinges, and bolt slippage. The proposed model was validated using the angle cleat tests presented herein, showing substantially better accuracy than the model codified in EN 1993-1-8. The proposed model was incorporated in the Generalised Component Method to simulate the moment-rotational responses of published bolted angle connection tests. The proposed model is shown to provide more accurate response curves compared to Generalised Component Method analyses that employ existing angle cleat models.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"228 ","pages":"Article 109397"},"PeriodicalIF":4.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143421892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing the effects of long-term temperature fields on the performance of a metal roof system with measured temperature field distributions","authors":"Cholap Chong ,&nbsp;Mingming Wang ,&nbsp;Danni Liu ,&nbsp;Yichen Lu ,&nbsp;Wei Cai ,&nbsp;Danqing Song ,&nbsp;Xiaoli Liu","doi":"10.1016/j.jcsr.2025.109427","DOIUrl":"10.1016/j.jcsr.2025.109427","url":null,"abstract":"<div><div>The thermal effects, which include temperature distribution characteristics, of metal roof systems are remarkable under solar radiation. Understanding the temperature distribution of a roof system is the premise of analysing its temperature effect. To obtain the temperature distribution of a continuously welded stainless steel roof (CWSSR) system, in this work, an experimental study was carried out on the temperature changes at different positions on the surface of a stainless steel roof panel. The thermal effect of the roof system is analysed via experiments and numerical analysis under different thermal loadings. The effects of static and cyclic temperatures on the mechanical properties of the roof system are considered. The temperature distribution measurements revealed that the temperature field of the CWSSR system was nonuniform over time, but it was approximately uniform along the dimensions of the sample. When the temperature increases by 1 °C, the maximum stress and displacement increase by 2.25 MPa and 0.02 mm, respectively. The comparative analysis reveals that the experimental results are similar to the numerical results, and the maximum error is 8.2 %. Long-term cycle thermal loading can reduce the mechanical properties of key connection nodes, and the maximum reduction rate was 6.1 %. The temperature significantly influences the mechanical properties of the roof system. The analysis of the bearing performance and service life of the CWSSR system should consider not only the wind load but also the influence of the cyclic temperature effect.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"228 ","pages":"Article 109427"},"PeriodicalIF":4.0,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143421888","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}

{"title":"Steel tube filled with steel-fiber-reinforced recycled aggregate concrete subjected to coupled compression-torsion","authors":"Zhenzhen Liu,&nbsp;Zhifeng Guo,&nbsp;Haozhou Wu,&nbsp;Yiyan Lu,&nbsp;Pengtuan Zhao","doi":"10.1016/j.jcsr.2025.109399","DOIUrl":"10.1016/j.jcsr.2025.109399","url":null,"abstract":"<div><div>Recycled aggregate concrete-filled steel tube (RCFST) is a wise way to utilize demolition concrete, nevertheless its torsional behavior suffers from the distinct shrinkage and friability of recycled aggregate concrete (RAC). This study adopts adding steel fibers to improve the torsional behavior of RCFST columns. A total of 17 steel-fiber-reinforced recycled aggregate concrete filled circular steel tube (SRCFST) columns were tested, in which 7 ones under pure torsion and 10 ones subjected to combined compressive-torsional load. Test results showed that adding 1.2 % ∼ 1.8 % steel fibers improved the torsional properties of RCFST columns with the promotion of 27.62 %–34.27 % in ultimate torsional capacity. Steel fibers enhanced the shear resistance of the concrete core, delayed the cracking, and postponed the failure of RCFST columns. The increase of axial compression ratio (<em>n</em>) led to the first increase and then decrease trend in ultimate torsional capacity. Because the relative small axial compression (<em>n</em> ≤ 0.2) was applied, the concrete strength was improved due to the triaxial stress state, and the steel-concrete interface was enhanced due to the normal stress. Moreover, a modified finite-element model (FEM) was established based on the “cohesive” contact model. Compared with conventional “penalty” contact model, the “cohesive” contact model can capture the delamination and destruction of the steel-concrete interface, thereby accurately predicting the pure torsion behavior of RCFST columns.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"228 ","pages":"Article 109399"},"PeriodicalIF":4.0,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143421889","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}

{"title":"Study on flexural performance of light steel keel composite wall with web openings","authors":"Bo Nan ,&nbsp;Yuanpeng Chi ,&nbsp;Zhijian Yang","doi":"10.1016/j.jcsr.2025.109376","DOIUrl":"10.1016/j.jcsr.2025.109376","url":null,"abstract":"<div><div>Light steel keel composite wall with web openings is a new type of wall plate with thermal insulation properties, which helps to prevent the waste of resources related to the “thermal bridge effect.” However, the presence of web openings inevitably affects wall mechanical performance. This research investigates flexural performance parameters of eight light steel keel composite walls, seven with web openings and one without, through flexural testing. In addition, ABAQUS finite element software is used to simulate these walls, and it is found that the calculated load-deflection curves are in good agreement with the experimental results, which verifies the accuracy of the finite element simulation. Furthermore, the range of parameter was expanded, and the finite element models of 24 walls with web openings were established. The effects of keel thickness, keel web height, number of keel openings, and opening length on the mechanical properties of these walls were examined. Furthermore, the flexural stiffness, ultimate bearing capacity, and failure mode of the walls under different parameters were analyzed. The analysis reveals that increasing the keel thickness and keel web height substantially enhances the mechanical properties, with the flexural stiffness improving by 121.57 % and 167.64 %, respectively, and ultimate bearing capacity increasing by 115.62 % and 111.78 %. Conversely, increasing the number and length of openings considerably reduces the ultimate bearing capacity, with the maximum flexural stiffness decreasing by 42.40 % and 42.44 %, respectively, and ultimate bearing capacity declining by 26.86 % and 28.29 %, respectively.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"228 ","pages":"Article 109376"},"PeriodicalIF":4.0,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143421887","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}