Journal of Constructional Steel Research最新文献

Temperature field model for large spatial structures: Experiment, simulation and ANN prediction

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-02-20 DOI: 10.1016/j.jcsr.2025.109425

Yiwen Wu , Shenggang Fan , Minze Zhang , Leroy Gardner

{"title":"Temperature field model for large spatial structures: Experiment, simulation and ANN prediction","authors":"Yiwen Wu , Shenggang Fan , Minze Zhang , Leroy Gardner","doi":"10.1016/j.jcsr.2025.109425","DOIUrl":"10.1016/j.jcsr.2025.109425","url":null,"abstract":"<div><div>Large spatial stainless steel structures can be susceptible to accidental events such as fires, given their high occupancy, wide range of combustible materials and diverse usage. Consequently, a comprehensive investigation into the temperature field in large spatial stainless steel structures in the event of a fire has been conducted, encompassing experiments, simulations, assessments and predictions. Eight scaled temperature field tests were performed using a pool fire as the fire source, a common scenario in fire incidents. Building on the completed tests, a calibrated CFD model was developed using the Fire Dynamics Simulator (FDS) software and employed to further analyse the temperature field in large spatial structures under various fire powers and radii. A total of 8064 sets of three-dimensional large spatial temperature field data were acquired. Existing temperature field models, both from codes and other research studies, were evaluated against a substantial dataset. The results indicated that current models tend to be conservative, especially in areas near the fire source. In response to these findings, a novel approach utilizing Artificial Neural Networks to predict the 3D spatial temperature field in large spatial stainless steel structures is introduced. In addition, compared with the complex calculation formulae of traditional models, the model proposed herein based on Artificial Neural Networks is more convenient to use in practice and exhibits better accuracy.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"228 ","pages":"Article 109425"},"PeriodicalIF":4.0,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143444974","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 resistance of hybrid titanium-clad bimetallic steel plate girders under patch loading

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-02-19 DOI: 10.1016/j.jcsr.2025.109429

Zeqiao Luo , Xuhong Zhou , Yu Shi , Xuanyi Xue

{"title":"Fire resistance of hybrid titanium-clad bimetallic steel plate girders under patch loading","authors":"Zeqiao Luo , Xuhong Zhou , Yu Shi , Xuanyi Xue","doi":"10.1016/j.jcsr.2025.109429","DOIUrl":"10.1016/j.jcsr.2025.109429","url":null,"abstract":"<div><div>This study examined the mechanical properties of titanium-clad bimetallic steel (TCBS) and the resistance behavior of hybrid TCBS plate girders at high temperatures. The hybrid TCBS plate girder comprised a TCBS web and mild steel flanges and stiffeners. Initially, a steady-state test was performed to evaluate the mechanical properties of TCBS within 500 °C. The TCBS exhibited a ductile rupture mode at varying temperatures. After necking, the bonding interface showed different degrees of interlaminar separation. The mechanical properties progressively deteriorated with rising temperature. At 500 °C, the yield strength, ultimate strength, and elastic modulus decreased by 40 %, 50 %, and 26 %, respectively. The elongation after fracture initially reduced and subsequently increased with rising temperature. Additionally, the mechanical property retention factors of TCBS were compared with those of the substrate and cladding metals. Subsequently, a numerical approach was developed to evaluate the fire resistance of hybrid TCBS plate girders under patch loading. Parametric research involving 320 models was performed to elucidate the effects of geometric parameters, load length, and temperature. The degradation of material properties resulted in a substantial reduction in the ultimate capacity of hybrid TCBS plate girders. The ultimate resistance decreased by approximately 36 % at 500 °C. The applicability of the design method for steel plate girders at ambient in EN 1993-1-5 was evaluated. Based on EN 1993-1-5, a resistance reduction function applicable to hybrid TCBS plate girders at high temperatures was presented. The research findings establish a foundation for evaluating the resistance of hybrid TCBS plate girders in fire.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"228 ","pages":"Article 109429"},"PeriodicalIF":4.0,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143444973","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 unified design model to assess the shear behaviour and ultimate strength of a cold-formed steel welded and bolted clip-angle connection

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-02-19 DOI: 10.1016/j.jcsr.2025.109356

Nagaraju Mallepogu, Mahendrakumar Mathialagu Madhavan

{"title":"A unified design model to assess the shear behaviour and ultimate strength of a cold-formed steel welded and bolted clip-angle connection","authors":"Nagaraju Mallepogu, Mahendrakumar Mathialagu Madhavan","doi":"10.1016/j.jcsr.2025.109356","DOIUrl":"10.1016/j.jcsr.2025.109356","url":null,"abstract":"<div><div>In the present research work, a series of 70 laboratory tests were carried out to investigate the shear characteristics of a CFS welded clip-angle (WS) connection. The WS connection primarily exhibits failure modes such as (i) local buckling and (ii) distortional buckling of the clip-angle, in addition to a CFS column bearing failure. The impact of column bearing failure on the ultimate shear strength of the WS connection is investigated. A detailed parametric study is undertaken to analyze the effects of design variables on the different failure modes and the ultimate strength of the WS connection. Following the conventional two-step process, a design approach for the WS connection is developed like (i) failure modes were classified using aspect ratio (width/depth) and (ii) a new design equation was developed to predict the ultimate shear strength. Nonetheless, it is important to note that these two design steps are not interrelated. Therefore, the present research introduces a unified design model to assess and relate the failure behaviour and ultimate strength using a failure index factor. Unlike conventional method that overlook thickness impact on failure mode categorization, the current failure index factor considers all relevant design variables. The suggested design methodology has been expanded to the CFS bolted connection and shows a good agreement with the literature data of 114 bolted CFS connection tests. A comparative study was executed on the welded and bolted CFS shear connection and design guidelines have been formulated. A reliability assessment of the developed design models for both welded and bolted CFS connections has been carried out. A design example is provided to elucidate the design methodology.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"228 ","pages":"Article 109356"},"PeriodicalIF":4.0,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437156","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

Ductile fracture assessment of wire and arc additive manufactured steel materials

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-02-18 DOI: 10.1016/j.jcsr.2025.109422

Haohui Xin , Junqiang Li , Youyou Zhang , Milan Veljkovic , Nicolas Persem , Laurent Lorich

{"title":"Ductile fracture assessment of wire and arc additive manufactured steel materials","authors":"Haohui Xin , Junqiang Li , Youyou Zhang , Milan Veljkovic , Nicolas Persem , Laurent Lorich","doi":"10.1016/j.jcsr.2025.109422","DOIUrl":"10.1016/j.jcsr.2025.109422","url":null,"abstract":"<div><div>This research aims to experimentally investigate the ductile fracture characteristics and the level of anisotropy of four plates, 400 mm × 150 mm × 3.72 mm, made by Wire Arc Additive Manufacturing (WAAM) technology with 1 mm thick layers. Relatively small roughness is measured, expressed in maximum peak-to-valley height, measured by scanning, of 98 μm. Calibrated parameters for an advanced computational material model are derived for a finite element mesh size of 0.5 mm. The experimental campaign is based on eight types of short coupon specimens, analysed to explore fracture behaviour exposed to various stress conditions. Sixty-five coupon specimens, 51 milled and 14 tested in as printed conditions, cut out in three directions relative to the printing direction, are examined. The assumption of isotropic mechanical characteristics is confirmed. The mesoscale critical equivalent plastic strain (MCEPS) methodology is used to predict experimental results numerically. Three stages are considered: elastic, plastic, and couple plastic-damaged stages. The accuracy of the calibrated parameters is validated by comparing the engineering stress-strain relationships obtained from experimental tests and finite element (FE) analysis, reaching very good agreement. A list of all material parameters for ductile fracture modelling at various triaxiality levels and Lode parameters is provided for a mesh size of 0.5 mm.</div></div>","PeriodicalId":15557,"journal":{"name":"Journal of Constructional Steel Research","volume":"228 ","pages":"Article 109422"},"PeriodicalIF":4.0,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437153","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

Room- and elevated- temperature material properties of structural fire-resistant weathering steel

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-02-18 DOI: 10.1016/j.jcsr.2025.109400

Xianglin Yu , Yongjiu Shi , Yiu Kwong Pang , Kwong Fai Lau

{"title":"Room- and elevated- temperature material properties of structural fire-resistant weathering steel","authors":"Xianglin Yu , Yongjiu Shi , Yiu Kwong Pang , 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><sub>y</sub> = 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}

引用次数: 0

Axial compression mechanical properties of UHTCC–hollow steel tube square composited short columns

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-02-17 DOI: 10.1016/j.jcsr.2025.109424

Bing Wang , Shuang Ma , Yu-Peng Li , Ning Wang , Qing-Xin Ren

{"title":"Axial compression mechanical properties of UHTCC–hollow steel tube square composited short columns","authors":"Bing Wang , Shuang Ma , Yu-Peng Li , Ning Wang , 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}

引用次数: 0

Comparison of seismic resilience of steel frame structure equipped with double-stage and conventional buckling-restrained braces

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-02-17 DOI: 10.1016/j.jcsr.2025.109430

Qianxin Wen , Linlin Xie , Lei Zhu , Cantian Yang , Xinyu Wang

{"title":"Comparison of seismic resilience of steel frame structure equipped with double-stage and conventional buckling-restrained braces","authors":"Qianxin Wen , Linlin Xie , Lei Zhu , Cantian Yang , 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}

引用次数: 0

Experimental investigation on the cyclic performance of corroded high-strength steel

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-02-17 DOI: 10.1016/j.jcsr.2025.109420

Heng Liu , Liang Zong , Jinghong Xue , Aosong Yang

{"title":"Experimental investigation on the cyclic performance of corroded high-strength steel","authors":"Heng Liu , Liang Zong , Jinghong Xue , 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}

引用次数: 0

Research on fatigue crack propagation behavior and reliability evaluation of steel bridge

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-02-17 DOI: 10.1016/j.jcsr.2025.109421

Junting Li , Sanqing Su , Wei Wang

{"title":"Research on fatigue crack propagation behavior and reliability evaluation of steel bridge","authors":"Junting Li , Sanqing Su , 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}

引用次数: 0

Seismic analysis of large-span CFST arch bridge considering the stress accumulation effect

IF 4 2区工程技术

Journal of Constructional Steel Research Pub Date : 2025-02-17 DOI: 10.1016/j.jcsr.2025.109432

Lihan Xu , Lueqin Xu , Jianting Zhou , Maojun Yuan , Ruihua Pan

{"title":"Seismic analysis of large-span CFST arch bridge considering the stress accumulation effect","authors":"Lihan Xu , Lueqin Xu , Jianting Zhou , Maojun Yuan , 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}

引用次数: 0