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学者姓名：黄卿维
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Abstract ：
超高性能混凝土(Ultra-high performance concrete, UHPC)单轴拉伸(直拉)试验是分析UHPC抗拉性能和直拉本构关系的基础性试验，经过对其试件形状与尺寸的优化，试验成功率已得到了较大提升。但由于试件连接方式和局部加强方式的差异，各机构试验成功率参差不齐。为进一步保证直拉试验成功率，采用试验研究和数值模拟的方法系统分析了常见的四种试件连接方式和三种试件局部加强方式对试验成功率的影响，比选出最优试验方法。结果表明：面内夹持装置具有连接可靠、操作简单的优点，适合推广。但夹具的尺寸加工误差或微变形可能导致其与试件的接触面变窄、加剧夹持引发的试件应力集中，致使主裂纹位于测距范围之外；试件与夹具的接触区域进行柔性加强(粘贴碳纤维布)和刚性加强(粘贴铝片)均能有效解决上述问题，提高试验成功率。此外，采用比选的直拉试验方法，探究了钢纤维长径比和体积率对UHPC直拉损伤本构关系的影响。通过声发射(Acoustic emission, AE)监测探究了UHPC在直拉荷载作用下的损伤演化规律，利用声发射参数(累积计数比)构建损伤因子，得到了考虑钢纤维影响的UHPC直拉损伤本构关系。
Keyword ：
加强方式 加强方式 直拉本构关系 直拉本构关系 直拉试验 直拉试验 超高性能混凝土 超高性能混凝土 连接装置 连接装置 钢纤维特征参数 钢纤维特征参数
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| GB/T 7714 | 杨简 , 李洋 , 陈宝春 et al. UHPC直拉试验方法与本构关系研究 [J]. | 材料导报 , 2024 , 38 (06) : 159-167 . |
| MLA | 杨简 et al. "UHPC直拉试验方法与本构关系研究" . | 材料导报 38 . 06 (2024) : 159-167 . |
| APA | 杨简 , 李洋 , 陈宝春 , 徐港 , 黄卿维 . UHPC直拉试验方法与本构关系研究 . | 材料导报 , 2024 , 38 (06) , 159-167 . |
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Abstract ：
Uniaxial tensile test of ultra-high performance concrete(UHPC)is a basic material test to analyze its tensile properties and tensile constitutive relationship. Through optimization of the shape and size of the specimens,the success rate of the test has been greatly improved. However,due to the difference in the connection device and reinforcement method,the success rate of each institution is uneven. In order to further ensure the success rate of the uniaxial tensile test,the influence of four common connection devices and three reinforcement methods on the success rate of the test were systematically analyzed through experimental research and numerical simulation,and the optimal test scheme was selected. The results showed that the in-plane clamping device has the advantages of reliable connection and simple operation,which is suitable for popularization. However,there is a problem that the size processing error or micro deformation of the clamp leads to the narrowing of the contact surface with the specimen,intensifies the stress concentration caused by clamping,and makes it impossible to control the main crack to be located in the measuring range;both flexible reinforcement (paste carbon fiber reinforced polymer)and rigid reinforcement (paste aluminum sheet) of the contact area between the specimen and the fixture can effectively solve the above problems,increase the success rate. In addition,the influence of the aspect ratio and volume fraction of steel fibers on the damage constitutive relationship of UHPC under uniaxial tension was investigated by using the optimal uniaxial tensile test method. The damage evolution law of UHPC under uniaxial tensile load was explored through acoustic emission (AE)monitoring. The damage factor was constructed using AE parameters (cumulative counts ratio),and the uniaxial tensile damage constitutive relationship of UHPC considering the influence of steel fiber was obtained. © 2024 Cailiao Daobaoshe/ Materials Review. All rights reserved.
Keyword ：
Acoustic emission testing Acoustic emission testing Aspect ratio Aspect ratio Carbon fiber reinforced plastics Carbon fiber reinforced plastics High performance concrete High performance concrete Numerical methods Numerical methods Steel fibers Steel fibers Tensile testing Tensile testing
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| GB/T 7714 | Yang, Jian , Li, Yang , Chen, Baochun et al. Study on Uniaxial Tensile Test Method and Constitutive Relationship of UHPC [J]. | Materials Reports , 2024 , 38 (6) . |
| MLA | Yang, Jian et al. "Study on Uniaxial Tensile Test Method and Constitutive Relationship of UHPC" . | Materials Reports 38 . 6 (2024) . |
| APA | Yang, Jian , Li, Yang , Chen, Baochun , Xu, Gang , Huang, Qingwei . Study on Uniaxial Tensile Test Method and Constitutive Relationship of UHPC . | Materials Reports , 2024 , 38 (6) . |
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Ultra -high performance concrete (UHPC) is an innovative cement -based composite material characterized by extremely high durability and mechanical properties, which provides a potential possibility of using non -desalted sea -sand as aggregate. However, the long-term steel corrosion behavior in UHPC prepared by simulated sea -sand under different immersion environments remains unclear, which is of great significance for the application of sea -sand UHPC in practical engineering. In this study, the pore structure of sea -sand UHPC matrix was measured using nitrogen adsorption/desorption method. The corrosion behavior of rebar in sea -sand UHPC with different endogenous chloride ion contents soaking in pure water and NaCl solution was characterized by linear polarization resistance (LPR), electrochemical impedance spectroscopy (EIS) and cyclic polarization (CP). The experimental results show that the initial UHPC pore structure is refined by incorporation of sea -sand, and is similar to that of ordinary UHPC at the later hydration. Regardless of the endogenous chloride ion content and immersion environment, the corrosion rate evaluated by corrosion current density (icorr) and polarization resistance (Rp) of reinforcement in UHPC is extremely low. The measurement of EIS shows that UHPC group has higher matrix resistance (Rc) and charge transfer resistance (Rct), while lower electric double layer capacitance (CPEdl) of reinforcement, which indicates that the steel in UHPC made of sea -sand is still in a state of passivation. However, the steel bar in comparison specimen OPC soaking in NaCl solution is in the corrosion stage. Furthermore, sea -sand UHPC possesses of excellent ability of anti -pitting corrosion of reinforcement after 180 days of immersion in NaCl solution.
Keyword ：
Corrosion behavior Corrosion behavior Endogenous chloride level Endogenous chloride level Immersion environment Immersion environment Pore structure Pore structure Sea -sand UHPC Sea -sand UHPC
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| GB/T 7714 | Huang, Wei , He, Lian , Chen, Zhendong et al. Effect of endogenous chloride ion on the corrosion behavior of reinforcement embedded in sea-sand UHPC matrix in different immersion environments [J]. | JOURNAL OF BUILDING ENGINEERING , 2024 , 90 . |
| MLA | Huang, Wei et al. "Effect of endogenous chloride ion on the corrosion behavior of reinforcement embedded in sea-sand UHPC matrix in different immersion environments" . | JOURNAL OF BUILDING ENGINEERING 90 (2024) . |
| APA | Huang, Wei , He, Lian , Chen, Zhendong , Yin, Jianli , Huang, Qingwei , Chen, Rong et al. Effect of endogenous chloride ion on the corrosion behavior of reinforcement embedded in sea-sand UHPC matrix in different immersion environments . | JOURNAL OF BUILDING ENGINEERING , 2024 , 90 . |
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为探明不同技术指标对钢混组合梁UHPC桥面板性能的影响，完善超高性能混凝土预混料(PF-UHPC)的制备技术工艺，制造出性能稳定、满足施工要求的钢混组合梁UHPC桥面板，通过试验对比分析了不同工艺技术指标对PF-UHPC工作性能及力学性能的影响。确定最佳工艺技术指标，形成一套关于PF-UHPC预制和现浇钢混组合梁桥面板施工的关键技术。结果表明：PF-UHPC基准配合比的强度、工作性能均满足要求，且增加减水剂掺量0.3%能显著改善材料工作性能而不影响力学性能；采用大搅拌机搅拌时长为8 min时，混合料各项性能最佳；材料凝结时间受室内外环境因素影响大；钢纤维的投料先后对材料工作性能和力学性能影响较小，但后加钢纤维的混合料其钢纤维均匀性偏差较大；试件抗折强度受钢纤维取向影响，而钢纤维取向主要取决于布料方向，布料方向与UHPC流动方向的角度越大，试验板的抗折强度越低；振捣频率对UHPC抗折强度影响较大，对抗压强度和钢纤维含量偏差影响较小，80 Hz振捣频率最有利；UHPC湿养护后水化热温度基本在40～50℃,内部初始温度随板厚增加升高，蒸养过程中UHPC板中心升温较外部慢，内外温差较大；蒸养棚内恒温温度宜控制在90℃以上，且应适当延长自然降温时间，25 cm厚板底部在70℃以上恒温30 h,其强度满足设计要求。
Keyword ：
UHPC桥面板 UHPC桥面板 工作性能及力学性能 工作性能及力学性能 控制变量法 控制变量法 施工技术 施工技术 桥梁工程 桥梁工程
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| GB/T 7714 | 杨元海 , 王斌 , 黄卿维 . 采用PF-UHPC制备钢混组合梁桥面板施工关键技术 [J]. | 公路交通科技 , 2024 , 41 (04) : 120-131 . |
| MLA | 杨元海 et al. "采用PF-UHPC制备钢混组合梁桥面板施工关键技术" . | 公路交通科技 41 . 04 (2024) : 120-131 . |
| APA | 杨元海 , 王斌 , 黄卿维 . 采用PF-UHPC制备钢混组合梁桥面板施工关键技术 . | 公路交通科技 , 2024 , 41 (04) , 120-131 . |
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The macro properties of fiber reinforced concrete is significantly associated with the spatial distribution of fiber. In this paper, the statistics-based algorithms characterizing fiber spatial distribution including orientation probability, spacing distance and wall effect were proposed based on the established the random generation model of cylindrical fibers in an ideal three-dimensional fiber reinforced concrete matrix. The influence of fiber physical parameters on the overall fiber spatial distribution were statistically analyzed. The results show that the fiber orientation probability in ideal fiber reinforced concrete matrix is almost constant. The fiber geometric size plays an important role on the fiber spatial morphological characteristics, where the fiber spacing distance in-creases with the fiber length and diameter, and the wall effect is significantly affected by the fiber length. The heterogeneity of fiber distribution characterized by the higher fiber spacing distance in the edge region is associated with the fiber sparsity mainly influenced by the single fiber volume and total fiber fraction. With the constraints of wall effect and principal stress direction, the boundary region parallel to the principal stress has a higher fiber orientation coefficient, while the region perpendicular to principle stress possesses of the lowest coefficient.
Keyword ：
Fiber physical parameter Fiber physical parameter Fiber reinforced concrete Fiber reinforced concrete Fiber spatial distribution morphology character Fiber spatial distribution morphology character Numerical statistics-based algorithms Numerical statistics-based algorithms Spatial inhomogeneity Spatial inhomogeneity
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| GB/T 7714 | Huang, Wei , Huang, Bin , Pan, Axin et al. Numerical statistics-based research on the spatial distribution of cylindrical fiber in ideal simulated fiber reinforced concrete matrix [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2023 , 379 . |
| MLA | Huang, Wei et al. "Numerical statistics-based research on the spatial distribution of cylindrical fiber in ideal simulated fiber reinforced concrete matrix" . | CONSTRUCTION AND BUILDING MATERIALS 379 (2023) . |
| APA | Huang, Wei , Huang, Bin , Pan, Axin , Chen, Qingfeng , Huang, Qingwei , Xu, Ruobin et al. Numerical statistics-based research on the spatial distribution of cylindrical fiber in ideal simulated fiber reinforced concrete matrix . | CONSTRUCTION AND BUILDING MATERIALS , 2023 , 379 . |
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无伸缩缝桥梁由于取消了伸缩装置,从而可彻底地解决伸缩装置的养护问题,是一种可持续发展的桥梁形式.它的应用以梁桥为主,在拱桥中应用相对较少.该文以云南八丘田桥为例,该桥为上承式拱桥,其拱上桥道结构与两引桥跨直接相连形成连续结构,并延伸至台后的引板(搭板),从而消除了全桥的桥面伸缩缝,使其成为一座无伸缩缝拱桥.该文阐述了无伸缩缝拱桥的主要类型,重点介绍了八丘田桥的设计,并分析了上承式拱的桥面伸缩量、取消伸缩缝对结构受力的影响.
Keyword ：
伸缩缝 伸缩缝 伸缩量 伸缩量 受力分析 受力分析 延伸桥面板 延伸桥面板 拱桥 拱桥 桥梁工程 桥梁工程
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| GB/T 7714 | 陈宝春 , 孙同庆 , 黄卿维 et al. 云南八丘田无伸缩缝拱桥设计与受力分析 [J]. | 中外公路 , 2023 , 43 (3) : 69-75 . |
| MLA | 陈宝春 et al. "云南八丘田无伸缩缝拱桥设计与受力分析" . | 中外公路 43 . 3 (2023) : 69-75 . |
| APA | 陈宝春 , 孙同庆 , 黄卿维 , 韩玉 , 施智 . 云南八丘田无伸缩缝拱桥设计与受力分析 . | 中外公路 , 2023 , 43 (3) , 69-75 . |
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采用含有不同氯盐(NaCl、CaCl_(2)和MgCl_(2))的拌合用水制备超高性能混凝土(UHPC)，通过线性极化法、交流阻抗法和循环极化法测试其内部钢筋钝化期内的电化学指标，研究了不同氯盐耦合作用下UHPC中钢筋致钝行为与演化规律。结果表明：3种不同氯盐体系下，UHPC中的钢筋均能钝化；UHPC基体电阻、钢筋钝化膜电阻和钢筋电荷转移电阻均随着水化龄期的发展而不断增大；相同Cl~(–)浓度下，Ca盐引入一定程度上加大了钢筋腐蚀的可能性，而Mg盐引入一定程度上延缓了钢筋腐蚀进程；钢筋的点蚀敏感性随着Cl~(-)浓度增大而增高；高Cl~(-)浓度下，Na-Ca体系下钢筋的点蚀敏感性高于Na-Mg体系。
Keyword ：
交流阻抗 交流阻抗 循化极化 循化极化 氯盐 氯盐 线性极化 线性极化 超高性能混凝土 超高性能混凝土 钝化行为 钝化行为 钢筋 钢筋
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| GB/T 7714 | 黄伟 , 陈镇东 , 陈荣 et al. 不同内掺氯盐耦合作用下超高性能混凝土中钢筋的电化学行为 [J]. | 硅酸盐学报 , 2023 , (08) : 1-11 . |
| MLA | 黄伟 et al. "不同内掺氯盐耦合作用下超高性能混凝土中钢筋的电化学行为" . | 硅酸盐学报 08 (2023) : 1-11 . |
| APA | 黄伟 , 陈镇东 , 陈荣 , 应丰泽 , 黄卿维 , 刘升 et al. 不同内掺氯盐耦合作用下超高性能混凝土中钢筋的电化学行为 . | 硅酸盐学报 , 2023 , (08) , 1-11 . |
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Ultra-high performance concrete (UHPC) was prepared via mixing water containing different chloride salts (i.e., NaCl, CaCl2 and MgCl2). The electrochemical indexes of the internal reinforcement during passivation period were measured by linear polarization, electrochemical impedance spectroscopy and cyclic polarization. The passivation behavior and evolution of steel bars in UHPC under the coupling action of different chloride salts were investigated. The results show that the reinforcement in UHPC is able to be passivated under three different chloride salt systems. The resistances of UHPC matrix, steel passivation film and steel charge transfer increase continuously with the hydration age. At the same concentration of Cl– ions, the introduction of Ca salts increases the possibility of steel corrosion to a certain extent, while the introduction of Mg salts delays the corrosion process of steel bars to some extent. The pitting corrosion sensitivity of reinforcement increases with the increment of Cl– ions concentration. At a high Cl– ions concentration, the pitting sensitivity of steel bars in Na–Ca system is greater than that in Na–Mg system. © 2023 Chinese Ceramic Society. All rights reserved.
Keyword ：
chloride salt chloride salt cyclic polarization cyclic polarization electrochemical impedance spectroscopy electrochemical impedance spectroscopy linear polarization linear polarization passivation behavior passivation behavior steel bar steel bar ultra-high performance concrete ultra-high performance concrete
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| GB/T 7714 | Huang, W. , Chen, Z. , Chen, R. et al. Passivation Behavior of Steel Bar in Ultra-High Performance Concrete under Coupling Effect of Different Internal Chloride Salts; [不同内掺氯盐耦合作用下超高性能混凝土中钢筋的电化学行为] [J]. | Journal of the Chinese Ceramic Society , 2023 , 51 (8) : 1928-1937 . |
| MLA | Huang, W. et al. "Passivation Behavior of Steel Bar in Ultra-High Performance Concrete under Coupling Effect of Different Internal Chloride Salts; [不同内掺氯盐耦合作用下超高性能混凝土中钢筋的电化学行为]" . | Journal of the Chinese Ceramic Society 51 . 8 (2023) : 1928-1937 . |
| APA | Huang, W. , Chen, Z. , Chen, R. , Ying, F. , Huang, Q. , Liu, S. et al. Passivation Behavior of Steel Bar in Ultra-High Performance Concrete under Coupling Effect of Different Internal Chloride Salts; [不同内掺氯盐耦合作用下超高性能混凝土中钢筋的电化学行为] . | Journal of the Chinese Ceramic Society , 2023 , 51 (8) , 1928-1937 . |
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本文介绍了波形钢腹板在桥梁结构中的应用发展概况和国外大跨度混凝土拱桥最新的研究进展,提出了波形钢腹板混凝土拱桥新型桥梁的构思,并介绍了以重庆万州长江大桥为原型进行的试设计的初步成果。试设计初步分析结果表明,这种新桥型在减轻拱圈自重、方便施工、缩短工期等方面具有相当的优越性,可作为混凝土拱桥向大跨径发展的一个新桥型进行深入的研究。
Keyword ：
拱桥 拱桥 施工 施工 桥型 桥型 波形钢腹板 波形钢腹板 混凝土 混凝土 设计 设计
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| GB/T 7714 | 陈宝春 , 王远洋 , 黄卿维 . 波形钢腹板混凝土拱桥新桥型构思 [C] //中国公路学会桥梁和结构工程分会2006年全国桥梁学术会议 . 2023 . |
| MLA | 陈宝春 et al. "波形钢腹板混凝土拱桥新桥型构思" 中国公路学会桥梁和结构工程分会2006年全国桥梁学术会议 . (2023) . |
| APA | 陈宝春 , 王远洋 , 黄卿维 . 波形钢腹板混凝土拱桥新桥型构思 中国公路学会桥梁和结构工程分会2006年全国桥梁学术会议 . (2023) . |
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To improve the mechanical properties of masonry columns, a new masonry column with UHPM (UMC) based on the ultra-high performance mortar (UHPM) was proposed. Axial compression test were carried out on two groups of UMC with fired brick and concrete brick. By comparing with the conventional masonry columns (MC), the stress mechanism and failure mode of UMC were discussed. The applicability of formula for calculating the axial compression bearing capacity of masonry columns in the current specification to UMC was evaluated, and the prediction formula for the axial compression bearing capacity of UMC was proposed. Analysis results show that the whole stress process of UMC and MC is similar, which both experience the stress stage before cracking, cracking development stage and failure stage. The initial cracking load of UMC is much higher than that of MC, where, the values of UMC with fired brick and concrete brick are 2.36 and 2.45 times than those of MC, respectively, and both are greater than the ultimate load of MC. Both the UMC and MC lost their bearing capacity due to the block failure. The failure mode of MC shows obvious brittleness, and the cracks mainly develop at the interface between the mortar and the block. However, the failure of UMC shows good ductility, and the crushing degree of block is much larger than that of MC. Compared with MC, mortar in UMC is no longer a weak part, and the UHPM plays a constraint role on the lateral deformation of the block, which can significantly improve the bearing capacity of the masonry column. The compression bearing capacities of UMC with fired brick and concrete brick are 1.74 and 2.00 times that of MC, respectively, indicating that the application of UHPM in masonry structure is quite feasible. The strength calculation formula for MC in the current specification will overestimate the bearing capacity of UMC. The proposed UMC strength calculation formula for UMC takes into account the strength of block and the constraint effect of UHPM on the block. © 2022, Editorial Department of Journal of Traffic and Transportation Engineering. All right reserved.
Keyword ：
Axial compression Axial compression Bearing capacity Bearing capacity Brick Brick Bridges Bridges Compression testing Compression testing Concrete construction Concrete construction Concretes Concretes Cracks Cracks Failure (mechanical) Failure (mechanical) Failure modes Failure modes Fracture mechanics Fracture mechanics Mortar Mortar Specifications Specifications
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| GB/T 7714 | Huang, Qing-Wei , Liao, Miao-Xing , Chen, Bao-Chun et al. Axial compression test of masonry short columns with ultra-high performance mortar [J]. | Journal of Traffic and Transportation Engineering , 2022 , 22 (1) : 93-102 . |
| MLA | Huang, Qing-Wei et al. "Axial compression test of masonry short columns with ultra-high performance mortar" . | Journal of Traffic and Transportation Engineering 22 . 1 (2022) : 93-102 . |
| APA | Huang, Qing-Wei , Liao, Miao-Xing , Chen, Bao-Chun , Lu, Shao-Bin , Liu, Jun-Ping , Li, Cong et al. Axial compression test of masonry short columns with ultra-high performance mortar . | Journal of Traffic and Transportation Engineering , 2022 , 22 (1) , 93-102 . |
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