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学者姓名：王莹
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Abstract ：
This paper compiled an experimental database consisting of 320 square concrete-filled steel tube (CFT) beam- columns subjected to cyclic loading. Approximately 82 % of these specimens were conventional-strength CFTs, revealing a significant lack of test data for high-strength CFTs. According to the current AISC Specification (AISC 360-16), CFTs are classified into three categories based on the width-to-thickness ratio (b/t): compact, noncompact, and slender sections. Notably, there is a gap in research regarding the seismic behavior of non- compact and slender CFTs. To address this gap, detailed finite element (FE) models were developed and validated. Based on the benchmarked model, an additional 156 high-strength concrete-filled high-strength steel (HS- HC) models were introduced to supplement data for high-strength square concrete-filled steel tube (HS-SCFT) members with slender and noncompact sections. Combined with the experimental database and the FE analysis, the calculation method for the strength of HS-SCFT beam-columns as outlined in AISC 360-16 and GB50936 was evaluated. The results indicated that the axial load (N) calculated according to GB50936 was more conservative for compact sections, whereas the N calculated using AISC 360-16 was more conservative for slender sections. Additionally, the flexural strength (M) calculated using AISC 360-16 demonstrated the best agreement with experimental results, while the M calculations from GB50936 exhibited greater dispersion. A new simplified method for calculating the load-displacement skeleton curve of HS-SCFT beam-columns was proposed considering the effect of critical parameters. The findings indicated that the proposed method effectively captures the behavior of HS-SCFT beam-columns under cyclic loading.
Keyword ：
Beam-columns Beam-columns Concrete-filled steel tube (CFT) Concrete-filled steel tube (CFT) Experimental database Experimental database Finite element analysis Finite element analysis High-strength High-strength Square Square
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| GB/T 7714 | Han, Wenbing , Wang, Ying . High-strength square concrete-filled steel tube (HS-SCFT) beam-columns under cyclic loading: Experimental database, modeling, and analysis [J]. | STRUCTURES , 2025 , 72 . |
| MLA | Han, Wenbing 等. "High-strength square concrete-filled steel tube (HS-SCFT) beam-columns under cyclic loading: Experimental database, modeling, and analysis" . | STRUCTURES 72 (2025) . |
| APA | Han, Wenbing , Wang, Ying . High-strength square concrete-filled steel tube (HS-SCFT) beam-columns under cyclic loading: Experimental database, modeling, and analysis . | STRUCTURES , 2025 , 72 . |
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Abstract ：
This study investigates the cyclic behavior of high-strength square concrete-filled steel tube (HS-SCFST) beamcolumns through experimental testing of 9 specimens and complementary finite element analysis. The specimens were subjected to constant axial load and cyclic flexural loading, with test parameters including axial compression ratio, steel yield stress, concrete compressive strength, and width-to-thickness ratio. The finite element models were benchmarked for parametric studies. The results showed the axial compression ratio influenced ultimate strength and envelope curve shape, while increased steel/concrete strength improved strength and energy dissipation capacity. However, higher slenderness and width-to-thickness ratios decreased strength, ductility, and stiffness notably. Evaluation of building codes GB50936, EC4, AISC360-16, and AIJ showed EC4 was most reasonable, GB50936 most conservative as it neglects stress distribution between steel and concrete, and AISC 360-16 conservative as it excludes concrete contribution. The study indicates existing code provisions need improvement for calculating HS-SCFST member strength. Additionally, a simplified calculation model was proposed to determine envelope curves for HS-SCFST beam-columns based on the experimental and FE results. In summary, the study provided data on HS-SCFST cyclic behavior and code evaluations, proposing enhancements for design.
Keyword ：
Beam-columns Beam-columns Concrete-filled steel tube (CFST) Concrete-filled steel tube (CFST) Cyclic behavior Cyclic behavior Experimental tests Experimental tests Finite element analysis Finite element analysis High-strength materials High-strength materials
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| GB/T 7714 | Lai, Zhichao , Han, Wenbing , Wang, Ying et al. Cyclic behavior of high-strength square concrete filled steel tube (HS-SCFST) beam-columns [J]. | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2025 , 227 . |
| MLA | Lai, Zhichao et al. "Cyclic behavior of high-strength square concrete filled steel tube (HS-SCFST) beam-columns" . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH 227 (2025) . |
| APA | Lai, Zhichao , Han, Wenbing , Wang, Ying , Lin, Xueying , Yang, Yuxing , Zeng, Xiaoyong . Cyclic behavior of high-strength square concrete filled steel tube (HS-SCFST) beam-columns . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2025 , 227 . |
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Abstract ：
高强方钢管超高性能混凝土构件在大跨桥梁、超高层建筑等工程中均有着广泛的应用前景.为研究高强方钢管超高性能混凝土短柱的轴压力学性能,设计制作了 16根方钢管混凝土短柱,并对其开展轴压试验,研究了混凝土抗压强度、钢管屈服强度、截面宽厚比等参数对其轴压性能的影响.通过ABAQUS有限元软件对试件进行非线性有限元分析和参数分析,以明确高强方钢管超高性能混凝土轴压短柱的受力机理.研究结果表明:高强方钢管超高性能混凝土短柱轴压性能良好;提高混凝土抗压强度可显著提升轴压承载力和刚度,且对延性影响不大;提高钢材屈服强度可提升承载力,但对轴压刚度和延性的影响较小;减小截面宽厚比可提升轴压承载力、刚度和延性,并延缓局部屈曲和剪切破坏.最后,将已有试验统计数据和所得试验结果与中国规范GB 50936-2014、欧洲规范EC4(2004)和美国规范AISC 360-22中相关公式的计算结果进行对比,发现GB 50936-2014对高强方钢管超高性能混凝土短柱轴压承载力的预测偏差较大,欧洲规范EC4(2004)的预测不够安全,且无法考虑钢管局部失稳的影响;美国规范AISC 360-22的计算结果与试验结果较为接近,且考虑了钢管局部失稳的影响.
Keyword ：
方钢管混凝土 方钢管混凝土 桥梁工程 桥梁工程 超高性能混凝土 超高性能混凝土 轴压试验 轴压试验
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| GB/T 7714 | 赖志超 , 董翠芬 , 林玉煌 et al. 高强方钢管超高性能混凝土短柱轴压性能研究 [J]. | 中国公路学报 , 2025 , 38 (3) : 343-353 . |
| MLA | 赖志超 et al. "高强方钢管超高性能混凝土短柱轴压性能研究" . | 中国公路学报 38 . 3 (2025) : 343-353 . |
| APA | 赖志超 , 董翠芬 , 林玉煌 , 王莹 , 陈宝春 , 李文勃 . 高强方钢管超高性能混凝土短柱轴压性能研究 . | 中国公路学报 , 2025 , 38 (3) , 343-353 . |
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This paper investigates the axial compressive behavior of an innovative composite wall consisting of stainlessclad bimetallic steel faceplates and ultra-high performance concrete (UHPC) infill. The innovative wall can address three major challenges of traditional steel-concrete composite walls, i.e., rapid degradation of the lateral stiffness, insufficient ductility of the concrete infill, and limited corrosion resistance of steel faceplates. A total of 12 tests were first conducted, considering the effects of normalized faceplate slenderness ratio (7), concrete type, and steel type. Finite element models were then developed and benchmarked for parametric studies. Results from tests and parametric analysis showed that: (1) failure modes of the composite wall were local buckling of steel faceplate and concrete crushing; (2) increasing 7 significantly reduced the axial compressive strength of the composite wall and critical buckling stress of the steel faceplate, but had a negligible effect on the axial stiffness; (3) UHPC greatly improved the compressive strength and axial stiffness of the composite wall, but also resulted in a more brittle behavior. Finally, the applicability of current design provisions (i.e., CECS:546-2018, Eurocode 4, and AISC 360-22) for estimating the axial compressive strength was evaluated, and a new design equation was proposed.
Keyword ：
Bimetallic steel Bimetallic steel Composite walls Composite walls Compressive strength Compressive strength Critical buckling stress Critical buckling stress Design equation Design equation UHPC UHPC
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| GB/T 7714 | Guo, Juntao , Lai, Zhichao , Wang, Ying et al. Compressive behavior of stainless-clad bimetallic steel plate-UHPC composite walls [J]. | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2025 , 230 . |
| MLA | Guo, Juntao et al. "Compressive behavior of stainless-clad bimetallic steel plate-UHPC composite walls" . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH 230 (2025) . |
| APA | Guo, Juntao , Lai, Zhichao , Wang, Ying , Yao, Pengyu , Lin, Shulin , Lin, Zhennan . Compressive behavior of stainless-clad bimetallic steel plate-UHPC composite walls . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2025 , 230 . |
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This paper investigates the axial compressive behavior of assembled composite wall (ACW) which consists of a double steel plate-concrete composite shear wall and two external concrete layers on both sides. 29 ACW specimens and 4 double steel plate-concrete composite shear wall (DSCW) specimens were tested under axial load. ACW demonstrates excellent axial compression performance, with its axial compressive strength and deformation abilities both being superior to DSCW. Test results indicate that: i) the ratio of shear connector spacing-to-plate thickness (s/t) s / t ) has a significant influence on the axial compressive strength, failure mode and local buckling load of the specimens; ii) the external concrete layers can delay the local buckling of the steel plates and enhance the axial compressive strength of the composite shear wall. The impact of the external concrete layers on the axial compressive behavior of ACW is related to their arrangement form. Finally, three different codes were evaluated, the results show that EC4 and GB/T 51340-2018 calculation results match well with the test results.
Keyword ：
Assembled composite wall Assembled composite wall Axial compressive behavior Axial compressive behavior Experimental study Experimental study External concrete layer External concrete layer Local buckling Local buckling
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| GB/T 7714 | Lai, Zhichao , Shen, Yaning , Wang, Ying et al. Experimental study on axial compressive behavior of assembled composite shear wall [J]. | STRUCTURES , 2024 , 69 . |
| MLA | Lai, Zhichao et al. "Experimental study on axial compressive behavior of assembled composite shear wall" . | STRUCTURES 69 (2024) . |
| APA | Lai, Zhichao , Shen, Yaning , Wang, Ying , Fang, Chenxi , Guan, Minsheng , Yang, Yuxing . Experimental study on axial compressive behavior of assembled composite shear wall . | STRUCTURES , 2024 , 69 . |
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This study experimentally investigated the out -of -plane flexural behavior of assembled composite walls (ACWs). An experimental database was established, and seven specimens were tested. The effects of several parameters were investigated, including steel plate thickness, distance between two steel plates, and external concrete layer thickness. The results showed that ACW specimens exhibited promising out -of -plane flexural strength compared to the reinforced concrete specimen. The ductility increased with increasing distance between two steel plates and increasing thickness of the external concrete layer, while the effect of steel plate thickness was minor. The flexural strength and stiffness of the specimens were improved with increasing values of the three test parameters. Experimental results were used to evaluate the applicability of current design provisions (ACI 349M-06, GB 50936-2014, and JEAC-4618) for estimating flexural strength. It was indicated that the design equations of ACI 349M-06 estimated the out -of -plane flexural strength with reasonable accuracy.
Keyword ：
Assembled composite walls (ACW) Assembled composite walls (ACW) Experimental study Experimental study External concrete layer External concrete layer Out-of-plane flexural behavior Out-of-plane flexural behavior
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| GB/T 7714 | Wang, Ying , Dong, Cuifen , Lai, Zhichao et al. Out-of-plane flexural behavior of assembled composite shear wall [J]. | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2024 , 215 . |
| MLA | Wang, Ying et al. "Out-of-plane flexural behavior of assembled composite shear wall" . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH 215 (2024) . |
| APA | Wang, Ying , Dong, Cuifen , Lai, Zhichao , Fang, Chenxi , Zuo, Junbo , Yang, Yuxing . Out-of-plane flexural behavior of assembled composite shear wall . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2024 , 215 . |
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This paper proposed a novel high-strength steel-UHPC-clad steel composite wall (HS-UHPC-CS composite wall) and investigated its axial compressive behavior through experimental and numerical methods. A total of 18 axial compressive tests and finite element (FE) analyses, including parametric studies of 120 cases, were conducted. It was shown that the stud spacing-to-plate thickness ratio and the normalized slenderness ratio notably affected the strength and local buckling, while their influence on the initial stiffness was minor. The strength and initial stiffness were improved, while the ductility was compromised by the presence of ultra-high-performance concrete (UHPC). Steel fiber was critical to the HS-UHPC-CS composite wall, while the lack of steel fiber could trigger premature brittle failure. The influence of the strength of concrete was higher compared to steel plate. The critical buckling stress of the steel plate was calculated using Euler's buckling formula for the clad steel plate of the HS-UHPC-CS composite wall. The results were compared with the ordinary composite wall database. In addition, strength from test results, FE results, and the database were compared were compared with strength calculated by design provisions. It was found that the calculated strength was close but not safe. It was recommended that different concrete contribution coefficients should be applied for HS-UHPC-CS composite walls with different normalized slenderness ratios.
Keyword ：
Clad steel Clad steel Composite wall Composite wall Finite element Finite element High -strength steel High -strength steel UHPC UHPC
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| GB/T 7714 | Wang, Ying , Li, Xiang , Liao, Tianyu et al. Axial compressive behavior of high-strength steel-UHPC-clad steel composite walls [J]. | THIN-WALLED STRUCTURES , 2024 , 197 . |
| MLA | Wang, Ying et al. "Axial compressive behavior of high-strength steel-UHPC-clad steel composite walls" . | THIN-WALLED STRUCTURES 197 (2024) . |
| APA | Wang, Ying , Li, Xiang , Liao, Tianyu , Lai, Zhichao , Fang, Chenxi , Zuo, Junbo . Axial compressive behavior of high-strength steel-UHPC-clad steel composite walls . | THIN-WALLED STRUCTURES , 2024 , 197 . |
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Concrete filled steel tubes (CFST) can fully utilize the advantages of both steel and concrete to achieve superior ductility and strength. Therefore, an increasing number of CFST members are used as truss chords in bridge construction in earthquake zones. However, due to concrete settlement, concrete shrinkage, and temperature shift during service life, spherical-cap gaps may exist inside CFST chords, which will have an unfavorable influence on the seismic behavior of the web-chord connections. In this study, the hysteretic behavior of steel tubular T-joint with concrete-filled bottom chord with spherical-cap gap is experimentally investigated. A total of 24 T-joint specimens were tested with the CFST chord under the constant tensile load and the steel tubular web subjected to cyclic bending. The main testing parameters included spherical-cap gap ratios, chord to web diameter ratios, and chord diameter to thickness ratios. Based on the test results, the failure modes, hysteretic response, load-carrying capacity, stiffness degradation, ductility and energy dissipation characteristics were investigated and analyzed. The effect of spherical-cap gap on the hysteretic behavior of CFST T-joints was compared and discussed. The outcome of this research is expected to provide reference to the evaluation of seismic safety of CFST truss structures.
Keyword ：
Concrete-filled chord Concrete-filled chord Ductility Ductility Hysteretic behavior Hysteretic behavior Spherical-cap gap Spherical-cap gap Steel tubular web-chord T-joint Steel tubular web-chord T-joint
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| GB/T 7714 | Yang, Yuxing , Lin, Jianguang , Liao, Feiyu et al. Hysteretic behavior of steel tubular web-concrete filled chord T-joints with spherical-cap gap under cyclic bending [J]. | STRUCTURES , 2024 , 65 . |
| MLA | Yang, Yuxing et al. "Hysteretic behavior of steel tubular web-concrete filled chord T-joints with spherical-cap gap under cyclic bending" . | STRUCTURES 65 (2024) . |
| APA | Yang, Yuxing , Lin, Jianguang , Liao, Feiyu , Chen, Yufeng , Lin, Xin , Wang, Ying . Hysteretic behavior of steel tubular web-concrete filled chord T-joints with spherical-cap gap under cyclic bending . | STRUCTURES , 2024 , 65 . |
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This study experimentally and numerically investigated the behaviors of UHPC-filled highstrength square steel tube stub columns with compact, noncompact and slender sections under combined flexural and axial loads. Eighteen tests were conducted, addressing the gap of limited tests on concrete-filled square steel tubular stub columns with noncompact or slender sections. Additionally, finite element analyses were developed and benchmarked for parametric studies. The results of tests and parametric studies show that (1) steel tube outward buckling and concrete crushing occurred at 1/4-1/2L of the compression zone; (2) the load-axial displacement curves organized into three phases: elastic, elastic-plastic, and recession phase; (3) the compressive strength increased with increasing tube thickness, concrete strength, and steel yield strength. The compressive strength decreased with increasing eccentric ratio and slenderness coefficient. Test and numerical results are utilized to assess the suitability of current design specifications for predicting compressive strength. The evaluation showed that neither GB 50936-2014 nor Eurocode 4 provided reasonable predictions of strength, while AISC 360-16 provided conservative predictions.
Keyword ：
Compressive strength Compressive strength High-strength steel High-strength steel Parametric studies Parametric studies Slenderness coefficient Slenderness coefficient UHPC UHPC
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| GB/T 7714 | Guo, Juntao , Zhang, Kai , Wang, Ying et al. Behavior of UHPC filled high-strength square steel tubular stub columns under combined flexural and axial loads [J]. | JOURNAL OF BUILDING ENGINEERING , 2024 , 95 . |
| MLA | Guo, Juntao et al. "Behavior of UHPC filled high-strength square steel tubular stub columns under combined flexural and axial loads" . | JOURNAL OF BUILDING ENGINEERING 95 (2024) . |
| APA | Guo, Juntao , Zhang, Kai , Wang, Ying , Lai, Zhichao , Yang, Yuxing . Behavior of UHPC filled high-strength square steel tubular stub columns under combined flexural and axial loads . | JOURNAL OF BUILDING ENGINEERING , 2024 , 95 . |
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Joints formed between double-skin concrete shear walls (DSCWs) and reinforced concrete (RC) foundations commonly utilize lap-spliced bars to transfer forces. However, the behavior and design of these critical connections have not been thoroughly investigated. This study experimentally analyzes a steel-reinforced DSCW-toRC foundation anchorage joint under monotonic uniaxial tension loading. Seven 1:3 scale specimens were tested to examine the effects of varying lap-spliced bar diameter, steel plate thickness, and stud bolt spacing. Crack propagation, load-displacement response, and reinforcement strain were measured. The results characterize two potential failure modes: ductile steel yielding and brittle stud shearing. Steel strains developed linearly up to yielding, demonstrating uniform transmission of tensile loads. Increased plate thickness and decreased stud spacing enhanced capacity. To mitigate sudden shear failures, the number and strength of studs must exceed the expected tensile demand. New design recommendations are proposed, including minimum stud bolt shear strength and the use of confining tie bars. This study provides an improved understanding of the behavior of DSCW-to-RC foundation lap-spliced connections, enabling resistance to axial demands while avoiding brittle failure modes. The experimental data will inform future analytical models and design provisions for these critical structural joints.
Keyword ：
Axial tension test Axial tension test Force transmission mechanism Force transmission mechanism Lap -spliced connection Lap -spliced connection
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| GB/T 7714 | Wang, Ying , Wei, Jinrui , Zuo, Junbo et al. The axial tensile performance of DSCW-RC joints with lap-spliced bars [J]. | STRUCTURES , 2024 , 62 . |
| MLA | Wang, Ying et al. "The axial tensile performance of DSCW-RC joints with lap-spliced bars" . | STRUCTURES 62 (2024) . |
| APA | Wang, Ying , Wei, Jinrui , Zuo, Junbo , Fang, Chenxi , Lai, Zhichao , Guan, Minsheng et al. The axial tensile performance of DSCW-RC joints with lap-spliced bars . | STRUCTURES , 2024 , 62 . |
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