Query：
学者姓名：袁辉辉
Refining：
Year
Type
Indexed by
Source
Complex
Co-
Language
Clean All
Abstract ：
To study the eccentric compression performance of UHPC-encased concrete-filled steel tube composite medium-long columns (referred to as ‘UC-CFST medium-long columns’), the eccentricity (0. 52 and 1. 04) and slenderness ratio (7. 22-44. 74) were selected as the main parameters, and a total of 18 UC-CFST medium-long column specimens were tested under eccentric compression loads, and the failure mode and eccentric compression performance index were obtained. The results reveal that with the increase of eccentricity and slenderness ratio, the failure mode of UC-CFST medium-long columns changes from material strength failure to instability failure, and the bearing capacity of specimens is significantly reduced. The specimens with a slenderness ratio less than or equal to 21. 03 exhibit obvious material strength failure characteristics. The steel bars and steel tubes on the near load side of the small eccentric compression specimens first undergo compression yielding, while the UHPC outer layer in the tensile zone of the large eccentric compression specimens cracks, and the steel tubes yield in tension. When the peak load is reached, the UHPC in the compressive zone of the large and small eccentric compression specimens is crushed. The specimens with a slenderness ratio greater than 35. 26 are subjected to elastic-plastic instability failure, while a specimen with a slenderness ratio between 21. 03 and 35. 26 is subjected to plastic instability failure. Finally, the applicability of the bending moment amplification factor method for concrete-encased CFST columns proposed in GB/ T 51446—2021‘Technical standard for concrete-filled steel tubular hybrid structures’ to calculate the eccentric compression bearing capacity of UC-CFST medium-long columns is discussed. It is found that this method will significantly overestimate the eccentric compression bearing capacity of UC-CFST medium-long columns. Therefore, combined with the mechanical characteristics of UC-CFST medium-long columns, an improved moment amplification factor method which can be used to calculate the eccentric compression bearing capacity of UC-CFST medium-long columns is derived in this paper. The calculation results correspond well with the experimental results. © 2024 Science Press. All rights reserved.
Keyword ：
Bending strength Bending strength Bond strength (materials) Bond strength (materials) Columns (structural) Columns (structural) Compression testing Compression testing Compressive strength Compressive strength Electric towers Electric towers Fracture mechanics Fracture mechanics Pressure vessel codes Pressure vessel codes Religious buildings Religious buildings Solar buildings Solar buildings Tubular steel structures Tubular steel structures Uranium carbide Uranium carbide Water towers Water towers
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wu, Qingxiong , Xu, Zhikun , Cheng, Jun et al. Experimental study on eccentric compression performance of UHPC-encased CFST composite medium-long columns [J]. | Journal of Building Structures , 2024 , 45 (9) : 76-88 . |
| MLA | Wu, Qingxiong et al. "Experimental study on eccentric compression performance of UHPC-encased CFST composite medium-long columns" . | Journal of Building Structures 45 . 9 (2024) : 76-88 . |
| APA | Wu, Qingxiong , Xu, Zhikun , Cheng, Jun , Yuan, Huihui , Qin, Zhiqing . Experimental study on eccentric compression performance of UHPC-encased CFST composite medium-long columns . | Journal of Building Structures , 2024 , 45 (9) , 76-88 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
为研究界面焊接环向钢筋的钢管混凝土叠合柱的抗剪性能，以环向钢筋的布置间距和直径为研究参数，对6根叠合柱试件进行了横向剪切静力试验和数值模拟，分析了各参数对试件的破坏过程、破坏形态、荷载-跨中挠度曲线以及抗剪承载力的影响规律。研究结果表明：界面环向钢筋布置方案不同的叠合柱试件破坏形态基本相同，均发生斜压破坏；试件的受力过程可划分为弹性阶段、弹塑性阶段、强化阶段和破坏阶段四个阶段；随着界面环向钢筋布置间距的减小，试件的抗剪承载力提高显著，最大增幅达22%；增大界面环向钢筋的直径可提高试件的抗剪承载力，但作用效果有限，最大增幅仅为6.1%。通过试验数据对有限元模型的有效性进行验证，并进一步分析了不同阶段有限元模型的应力状态，明确了此类叠合柱的受剪机理。
Keyword ：
抗剪性能 抗剪性能 有限元分析 有限元分析 界面环向钢筋 界面环向钢筋 试验研究 试验研究 钢管混凝土叠合柱 钢管混凝土叠合柱
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 程军 , 许志坤 , 吴庆雄 et al. 界面焊接环向钢筋的钢管混凝土叠合柱抗剪性能研究 [J]. | 工程力学 , 2024 , (S1) : 142-149 . |
| MLA | 程军 et al. "界面焊接环向钢筋的钢管混凝土叠合柱抗剪性能研究" . | 工程力学 S1 (2024) : 142-149 . |
| APA | 程军 , 许志坤 , 吴庆雄 , 袁辉辉 . 界面焊接环向钢筋的钢管混凝土叠合柱抗剪性能研究 . | 工程力学 , 2024 , (S1) , 142-149 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
To study the eccentric compression performance and failure mechanism of ultra-high performance concrete (UHPC) encased concrete-filled steel tubular (CFST) medium-long columns (UC-CFST medium-long columns), a total of 27 UC-CFST column specimens were tested under eccentric compression with eccentricity and slenderness ratio as the main parameters. After verified by experimental results, the finite element (FE) analysis of UC-CFST medium-long columns with actual structural cross-sectional size under eccentric compression was further carried out. It is found that as the slenderness ratio and eccentricity increased, the bending stiffness and the ultimate bearing capacity of the UC-CFST columns decreased gradually, and the failure mode changed from strength failure to instability failure, and the smaller the proportion of encasing UHPC area, the greater the upper-bound slenderness ratio of strength failure. Moreover, the influence of eccentricity was nonlinearly coupled with slenderness ratio on the eccentric compressive bearing capacity of UC-CFST medium-long columns. Finally, a calculation method of ultimate load-bearing capacity of UC-CFST medium-long columns considering the influence of eccentricity and slenderness ratio was proposed, which had good calculation accuracy with experimental and numerical results.
Keyword ：
CFST CFST Eccentric compression test Eccentric compression test Finite element analysis Finite element analysis UHPC-encased UHPC-encased Ultimate bearing capacity Ultimate bearing capacity
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Xu, Zhikun , Cheng, Jun , Yuan, Huihui et al. Mechanical behavior of eccentrically loaded UHPC-encased CFST medium-long columns [J]. | ENGINEERING STRUCTURES , 2024 , 315 . |
| MLA | Xu, Zhikun et al. "Mechanical behavior of eccentrically loaded UHPC-encased CFST medium-long columns" . | ENGINEERING STRUCTURES 315 (2024) . |
| APA | Xu, Zhikun , Cheng, Jun , Yuan, Huihui , Wu, Qingxiong , Qin, Zhiqing . Mechanical behavior of eccentrically loaded UHPC-encased CFST medium-long columns . | ENGINEERING STRUCTURES , 2024 , 315 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
为研究外包超高性能混凝土钢管混凝土叠合中长柱(简称“UC-CFST中长柱”)的偏压性能，以偏心率(0.52、1.04)和长细比(7.22～44.74)为主要参数，进行了18个UC-CFST中长柱的偏压性能试验，得到其破坏模式和偏压性能指标。结果表明：随着偏心率和长细比的增加，UC-CFST中长柱的破坏模式由材料强度破坏转变为失稳破坏，承载力显著降低；长细比不大于21.03的中长柱试件均表现出明显的材料强度破坏特征，小偏心受压试件的近载侧钢筋、钢管先发生受压屈服，大偏心受压试件的受拉区UHPC外包层开裂、钢管受拉屈服，在达到峰值荷载时大、小偏心受压试件的受压区UHPC均被压碎；长细比大于35.26的中长柱试件表现为弹塑性失稳破坏，长细比介于21.03～35.26之间时为塑性失稳破坏。同时，进一步研究了GB/T 51446—2021《钢管混凝土混合结构技术标准》建议的钢管混凝土叠合柱弯矩增大系数法计算UC-CFST中长柱偏压承载力的适用性，发现该方法会明显高估UC-CFST中长柱的偏压承载力。为此，结合UC-CFST中长柱的受力特点，推导得到了可用于计算UC-CFST中长柱偏压承载力的改进弯矩增大系数法，其计算结果与试验结果吻合良好。
Keyword ：
偏压试验 偏压试验 偏心率 偏心率 承载力 承载力 超高性能混凝土 超高性能混凝土 钢管混凝土叠合柱 钢管混凝土叠合柱 长细比 长细比
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 吴庆雄 , 许志坤 , 程军 et al. 外包UHPC钢管混凝土叠合中长柱偏压性能试验研究 [J]. | 建筑结构学报 , 2024 , 45 (09) : 76-88 . |
| MLA | 吴庆雄 et al. "外包UHPC钢管混凝土叠合中长柱偏压性能试验研究" . | 建筑结构学报 45 . 09 (2024) : 76-88 . |
| APA | 吴庆雄 , 许志坤 , 程军 , 袁辉辉 , 秦志清 . 外包UHPC钢管混凝土叠合中长柱偏压性能试验研究 . | 建筑结构学报 , 2024 , 45 (09) , 76-88 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
To investigate the matching relationship between steel ratio and core concrete strength in the ultra -high strength concrete -filled steel tubular (UHSCFST) columns, a total of 40 stub column specimens, considering eight different steel ratios (ranging from 5.97% to 38.72%) and three grades of high -strength concrete (C60, C80, and C100), were tested under axial compression. The results revealed that under axial compression loads, as the steel ratio of the cross-section increased from low to high, the local buckling characteristics on the surface of UHSCFST stub columns gradually diminished, transitioning from shear failure to local buckling and bulging failure. With the improvement of the strength grade of the core concrete, the steel ratio that ensures the full confining effect of the steel tube should also be increased significantly. For the specimens filled with C60, C80, and C100 concrete, the threshold value of the steel ratio that can ensure the axial compressive strength of the specimen does not decrease after reaching the peak load was 13.87%, 20.24%, and 27.16%, respectively. By comparing with the experimental data, it is found that the CFST composite strength formula recommended by the current Chinese code did not apply to UHSCFST members. Based on the regression fitting of experimental data, the formula for calculating the composite strength of UHSCFST members and the ultimate strength of UHSCFST stub columns were proposed.
Keyword ：
Composite strength Composite strength Ductility Ductility Failure mode Failure mode Steel ratio Steel ratio Ultra -high strength concrete Ultra -high strength concrete
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zhou, Xiaojun , Bai, Shiming , Yuan, Huihui et al. Matching relationship study between steel ratio and core concrete strength in UHSCFST stub columns [J]. | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2024 , 219 . |
| MLA | Zhou, Xiaojun et al. "Matching relationship study between steel ratio and core concrete strength in UHSCFST stub columns" . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH 219 (2024) . |
| APA | Zhou, Xiaojun , Bai, Shiming , Yuan, Huihui , Liang, Jian , Mou, Tingmin . Matching relationship study between steel ratio and core concrete strength in UHSCFST stub columns . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2024 , 219 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
To reveal the force transmission mechanism of a novel steel-concrete joint in the large-span hybrid continuous girder bridges，a large-scale model of a steel-concrete joint with a geometric scaling ratio of 1∶3.5 was designed and fabricated based on the Fuzhou Mawei Bridge. And a refined solid finite element method was also used for static loading analysis under different design load combinations. The results show that，under the load-bearing capacity limit state condition，the concrete girder section of the joint model was fully compressed. The maximum compressive stress of the top-plate concrete at the joint surface was -23.6 MPa，while the maximum tensile stress of the bottom-plate steel was 115.8 MPa. These values were much smaller than the design value of material strength. When under 1.4 times the load-bearing capacity limit state condition，the test model of the steel-concrete joint exhibited no marked damage during the static loading process. The load-displacement/strain curves of measuring points on each control section basically showed a linear relationship，and the structure was always in an elastic working state，indicating that the joint had sufficient safety reserves. The vertical deformation of each section of the steel-concrete joint had no sudden change along the longitudinal direction，indicating that the force transmission of the joint was smooth，which can ensure that the rigidity of the main girder was steadily transitioned from the concrete to the steel box girder section. The relevant research findings can provide a reference for the design and construction of such hybrid continuous girder bridges in the future. © 2023 Hunan University. All rights reserved.
Keyword ：
bridge engineering bridge engineering finite element analysis finite element analysis force transmission mechanism force transmission mechanism hybrid continuous girder bridge hybrid continuous girder bridge model test model test steel-concrete joint steel-concrete joint
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Yuan, H. , Huang, Z. , Wu, Q. et al. Testing and Analysis on Force Transmission Mechanism of Steel-Concrete Joint of Large-span Hybrid Continuous Girder Bridge; [大 跨 混 合 连 续 箱 梁 桥 钢 混 结 合 段 传 力 机 理 试 验 与 分 析] [J]. | Journal of Hunan University Natural Sciences , 2023 , 50 (7) : 44-56 . |
| MLA | Yuan, H. et al. "Testing and Analysis on Force Transmission Mechanism of Steel-Concrete Joint of Large-span Hybrid Continuous Girder Bridge; [大 跨 混 合 连 续 箱 梁 桥 钢 混 结 合 段 传 力 机 理 试 验 与 分 析]" . | Journal of Hunan University Natural Sciences 50 . 7 (2023) : 44-56 . |
| APA | Yuan, H. , Huang, Z. , Wu, Q. , Lin, Z. . Testing and Analysis on Force Transmission Mechanism of Steel-Concrete Joint of Large-span Hybrid Continuous Girder Bridge; [大 跨 混 合 连 续 箱 梁 桥 钢 混 结 合 段 传 力 机 理 试 验 与 分 析] . | Journal of Hunan University Natural Sciences , 2023 , 50 (7) , 44-56 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
依托福州马尾大桥设计制作了几何缩尺比为1∶3.5的钢混结合段大比例模型,采用精细化实体有限元方法,开展不同设计荷载组合工况下的静力加载分析,以揭示此类新型钢混结合段在大跨混合连续箱梁桥中的传力机理.结果表明:承载能力极限最大弯矩组合工况下,试验模型混凝土梁段全截面受压,结合面处顶板混凝土最大压应力为-23.6 MPa、底板钢板最大拉应力为115.8 MPa,均小于材料的设计强度;加载至1.4倍承载能力极限状态工况,钢混结合段试验模型并未出现明显破坏,各关键截面测点的荷载-位移/应变曲线基本呈线性关系,结构始终处于弹性工作状态,表明该钢混结合段的设计具有充足的安全储备;同时钢混结合段沿纵桥向分布的各截面竖向变形没有明显突变,说明该钢混结合段传力平顺,可保证主梁刚度从混凝土箱梁段到钢箱梁段的平稳过渡.相关研究成果可为今后此类混合连续箱梁桥的设计与施工提供参考.
Keyword ：
传力机理 传力机理 有限元分析 有限元分析 桥梁工程 桥梁工程 模型试验 模型试验 混合连续箱梁桥 混合连续箱梁桥 钢混结合段 钢混结合段
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 袁辉辉 , 黄珍珍 , 吴庆雄 et al. 大跨混合连续箱梁桥钢混结合段传力机理试验与分析 [J]. | 湖南大学学报（自然科学版） , 2023 , 50 (7) : 44-56 . |
| MLA | 袁辉辉 et al. "大跨混合连续箱梁桥钢混结合段传力机理试验与分析" . | 湖南大学学报（自然科学版） 50 . 7 (2023) : 44-56 . |
| APA | 袁辉辉 , 黄珍珍 , 吴庆雄 , 林镇海 . 大跨混合连续箱梁桥钢混结合段传力机理试验与分析 . | 湖南大学学报（自然科学版） , 2023 , 50 (7) , 44-56 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
为研究界面焊接环向钢筋的钢管混凝土叠合柱的抗剪性能,以环向钢筋的布置间距和直径为研究参数,对6根叠合柱试件进行了横向剪切静力试验和数值模拟,分析了各参数对试件的破坏过程、破坏形态、荷载-跨中挠度曲线以及抗剪承载力的影响规律。研究结果表明:界面环向钢筋布置方案不同的叠合柱试件破坏形态基本相同,均发生斜压破坏;试件的受力过程可划分为弹性阶段、弹塑性阶段、强化阶段和破坏阶段四个阶段;随着界面环向钢筋布置间距的减小,试件的抗剪承载力提高显著,最大增幅达22%;增大界面环向钢筋的直径可提高试件的抗剪承载力,但作用效果有限,最大增幅仅为6.1%。最后,通过试验数据对有限元模型的有效性进行验证,并在此基础上开展了有限元受力机理分析,明确了此类叠合柱的受剪机理。
Keyword ：
抗剪性能 抗剪性能 有限元分析 有限元分析 界面环向钢筋 界面环向钢筋 试验研究 试验研究 钢管混凝土叠合柱 钢管混凝土叠合柱
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 程军 , 许志坤 , 吴庆雄 et al. 界面焊接环向钢筋的钢管混凝土叠合柱抗剪性能研究 [C] //第32届全国结构工程学术会议论文集（第I册） . 2023 . |
| MLA | 程军 et al. "界面焊接环向钢筋的钢管混凝土叠合柱抗剪性能研究" 第32届全国结构工程学术会议论文集（第I册） . (2023) . |
| APA | 程军 , 许志坤 , 吴庆雄 , 袁辉辉 . 界面焊接环向钢筋的钢管混凝土叠合柱抗剪性能研究 第32届全国结构工程学术会议论文集（第I册） . (2023) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
为了研究地震动特性、地震动强度和主余震作用下新型组合结构钢管混凝土箱形叠合墩(简称CFSTRC墩)的抗震性能,进行了 2个CFSTRC墩1:11.6缩尺模型的拟动力试验.研究结果表明:在峰值加速度(PGA)均按比例调幅为0.05g的10条国内外强地震动作用下,CFSTRC墩试件处于弹性工作状态,其中日本阪神大地震JRT波作用下的最大位移响应是平均值的1.68倍.在9度罕遇主震(PGA约为0.7g)作用下,试件S1进入强度劣化阶段,而试件S2仍处于弹塑性变形阶段;2个试件的破坏形态均表现为沿加载方向腹板的剪切斜裂缝、垂直加载方向腹板的水平向裂缝,同时伴随着柱肢底部钢管局部屈曲引起的外包混凝土竖向裂缝,导致试件刚度显著降低.随着余震PGA逐级增大,主震中已损伤试件的墩顶最大位移响应呈线性增大,累积滞回耗能呈非线性增长;在与主震地震强度相当的余震作用下,2个试件的累积损伤进一步加剧,水平承载力平均下降约17％,累积滞回耗能减少约16％,墩顶最大位移响应增加约3％.最后,采用基于结构最大变形与累积滞回耗能线性组合的地震损伤指标可比较准确地评估CFSTRC墩在主余震作用下的抗震性能.
Keyword ：
主余震 主余震 地震响应 地震响应 抗震性能 抗震性能 拟动力试验 拟动力试验 桥梁工程 桥梁工程 钢管混凝土箱形叠合墩 钢管混凝土箱形叠合墩
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 袁辉辉 , 程军 , 吴庆雄 et al. 主余震作用下钢管混凝土箱形叠合墩拟动力试验 [J]. | 中国公路学报 , 2023 , 36 (7) : 180-192 . |
| MLA | 袁辉辉 et al. "主余震作用下钢管混凝土箱形叠合墩拟动力试验" . | 中国公路学报 36 . 7 (2023) : 180-192 . |
| APA | 袁辉辉 , 程军 , 吴庆雄 , 佘智敏 . 主余震作用下钢管混凝土箱形叠合墩拟动力试验 . | 中国公路学报 , 2023 , 36 (7) , 180-192 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
提出一种不传递弯矩的墩梁半刚性连接节点，开展12个分别考虑不同影响参数的足尺节点模型拟静力试验，对比研究节点传力机理，分析刚度变化规律；采用验证后的有限元模型开展主要影响参数扩展分析，通过数值拟合方法，建立考虑半刚性节点剪切刚度和抗弯刚度计算方法。结果表明：水平荷载作用下，节点先平动再转动，该构造能利用钢棒的弯曲能力和橡胶套的压缩能力来实现桥梁上、下部结构连接处的半刚接性能。橡胶套厚度与钢棒直径是影响半刚性连接节点剪切刚度和抗弯刚度的主要因素，同时钢棒的根数与节点剪切刚度和抗弯刚度成近线性倍数关系，钢棒高度和橡胶垫厚度对节点受力性能的影响可以忽略不计。随着钢棒直径增大，半刚性节点平动位移逐渐减小，剪切刚度和抗弯刚度呈非线性递增关系。随着橡胶套厚度增大，半刚性节点平动位移逐渐增大，剪切刚度和抗弯刚度呈非线性递减关系。考虑钢棒直径和橡胶套厚度双参数变化的刚度计算公式，可用于墩梁半刚性连接节点设计。
Keyword ：
刚度计算 刚度计算 半刚性连接 半刚性连接 墩梁节点 墩梁节点 拟静力试验 拟静力试验 有限元分析 有限元分析 桥梁工程 桥梁工程
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 黄育凡 , 吴庆雄 , 刘钰薇 et al. 墩梁半刚性连接节点受力性能与计算方法研究 [J]. | 土木工程学报 , 2023 , 56 (10) : 78-92 . |
| MLA | 黄育凡 et al. "墩梁半刚性连接节点受力性能与计算方法研究" . | 土木工程学报 56 . 10 (2023) : 78-92 . |
| APA | 黄育凡 , 吴庆雄 , 刘钰薇 , 袁辉辉 . 墩梁半刚性连接节点受力性能与计算方法研究 . | 土木工程学报 , 2023 , 56 (10) , 78-92 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
