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学者姓名：夏樟华
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Abstract ：
随着城市交通的快速发展，对其建设要求越来越高，城市桥梁主要为匝道桥、斜交桥等非规则桥梁.为得到压弯剪扭等复合地震作用下装配式墩的损伤机理和滞回特性，进行了灌浆套筒连接（Grouting Sleeve,GS）、灌浆套筒和钢管混凝土剪力键组合连接（Grouting Sleeve and Steel-tube,GSS）装配式墩和钢筋混凝土现浇（Reinforced Concrete,RC）墩等三种桥墩在压弯剪扭复合作用下的拟静力试验.结合现有混凝土结构设计规范计算剪扭相关曲线，并与试验结果进行对比，分析装配式墩复合荷载作用下的剪扭承载能力.结果表明：GS构件与RC构件以压弯扭破坏为主，而插入钢管剪力键的GSS构件则发生塑性铰上移，呈现出剪扭破坏的特征.GS构件和RC构件具有较好的弯曲耗能能力，增加钢管剪力键的GSS构件则可以提升抗弯承载力.装配式墩接头导致其整体性较弱，GS构件和GSS构件抗扭承载力小于RC构件.各构件在复合荷载作用下的剪扭相关关系接近规范中的1/4圆理论曲线，研究结果可以为灌浆套筒连接装配式墩在压弯剪扭复合作用下的抗震性能分析提供参考.
Keyword ：
压弯剪扭 压弯剪扭 延性 延性 承载力 承载力 拟静力试验 拟静力试验 桥梁工程 桥梁工程 灌浆套筒连接 灌浆套筒连接 装配式墩 装配式墩
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| GB/T 7714 | 林友勤 , 赖仕永 , 夏樟华 et al. 压弯剪扭复合作用下灌浆套筒装配式RC墩的抗震性能 [J]. | 湖南大学学报(自然科学版) , 2024 , 51 (03) : 182-192 . |
| MLA | 林友勤 et al. "压弯剪扭复合作用下灌浆套筒装配式RC墩的抗震性能" . | 湖南大学学报(自然科学版) 51 . 03 (2024) : 182-192 . |
| APA | 林友勤 , 赖仕永 , 夏樟华 , 王达荣 . 压弯剪扭复合作用下灌浆套筒装配式RC墩的抗震性能 . | 湖南大学学报(自然科学版) , 2024 , 51 (03) , 182-192 . |
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采用JGJ 138—2016、СИ3-78、YB 9082—2006、AISC 360-16、叶列平公式，计算了所收集的51个矩形截面型钢混凝土(SRC)梁试件的抗弯极限承载力，并将计算结果与试验值进行比较；分析了所收集试件的参数范围及现有计算方法出现计算误差的原因，讨论了现有计算方法在计算理论等方面存在的局限性，并进行理论推导，提出了矩形截面SRC梁抗弯极限承载力计算方法；采用所提出的计算方法，计算了所收集试件的抗弯极限承载力。分析结果表明：现有计算方法的计算值与试验值均存在一些偏差；СИ3-78中的受压区高度取值不合理，且该方法的计算误差随混凝土强度提高而增大；JGJ 138—2016未考虑中性轴与型钢位置的相对关系对计算结果的影响，存在局限性；YB 9082—2006与AISC 360-16未考虑型钢与混凝土相互作用及型钢的布置方式等问题；叶列平公式计算结果较为保守；采用提出的抗弯极限承载力计算方法得到的计算值与试件试验值的比值均值为0.953,方差为0.015,计算值与试验值吻合较好；所收集SRC梁试件的含钢率为1.77%～5.77%,小于YB 9082—2006所建议的合理含钢率范围，因此，今后还需进一步开展高含钢率试件的补充试验，以便完善矩形截面SRC梁的抗弯极限承载力计算方法。
Keyword ：
含钢率 含钢率 型钢混凝土梁 型钢混凝土梁 抗弯极限承载力 抗弯极限承载力 桥梁工程 桥梁工程 规范 规范 计算精度 计算精度
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| GB/T 7714 | 林上顺 , 暨邦冲 , 夏樟华 et al. 矩形截面型钢混凝土梁抗弯极限承载力 [J]. | 交通运输工程学报 , 2024 , 24 (01) : 146-157 . |
| MLA | 林上顺 et al. "矩形截面型钢混凝土梁抗弯极限承载力" . | 交通运输工程学报 24 . 01 (2024) : 146-157 . |
| APA | 林上顺 , 暨邦冲 , 夏樟华 , 刘君平 , 林建凡 , 赵锦冰 . 矩形截面型钢混凝土梁抗弯极限承载力 . | 交通运输工程学报 , 2024 , 24 (01) , 146-157 . |
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JGJ 138 2016, CH 3-78, YB 9082 2006, AISC 360-16, and YE Lie-ping's formulas were used to calculate the ultimate flexural capacities of 51 collected specimens of steel reinforced concrete (SRC) beams with rectangular sections. The calculated results were compared with the test values. The ranges of parameters of the collected specimens and the reasons for the calculation errors of the existing calculation methods were analyzed. The limitations of the existing calculation methods were discussed in terms of the calculation theory and other aspects. Theoretical derivations were performed, and a method for calculating the ultimate flexural capacities of SRC beams with rectangular sections was proposed, and the ultimate flexural capacities of the collected specimens were calculated by using the proposed method. Analysis results show that some deviations arc found between the calculated values obtained by the existing calculation methods and the test values. The height value of the compression zone in CH 3-78 is not appropriate, and the calculation error of this method increases with the increase in concrete strength. The impact of the relative relationship between the neutral axis and the position of the structural steel on the calculation results is not considered in JGJ 138—2016, and limitations exist. YB 9082—2006 and AISC 360-16 do not take into account the interaction between structural steel and concrete or the arrangement of the structural steel. The YE Lie-ping's formulas produce conservative results. The average ratio of the values calculated by the proposed method for the ultimate flexural capacity to the test values of specimens is 0. 953, with a variance of 0. 015. The calculated values agree well with the test values. The steel ratios of the collected SRC beam specimens range from 1. 77% to 5. 77%, which is smaller than the reasonable steel ratio range suggested by YB 9082—2006. Therefore, it is necessary to carry out further supplementary tests of specimens with high steel ratios in the future, so as to improve the calculation method for the ultimate flexural capacity of SRC beams with rectangular sections. 1 tab, 10 figs, 31 refs. © 2024 Chang'an University. All rights reserved.
Keyword ：
Bridges Bridges Concrete beams and girders Concrete beams and girders Reinforced concrete Reinforced concrete Steel beams and girders Steel beams and girders Steel construction Steel construction Steel research Steel research
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| GB/T 7714 | Lin, Shang-Shun , Ji, Bang-Chong , Xia, Zhang-Hua et al. Ultimate flexural capacity of steel reinforced concrete beams with rectangular section [J]. | Journal of Traffic and Transportation Engineering , 2024 , 24 (1) : 146-157 . |
| MLA | Lin, Shang-Shun et al. "Ultimate flexural capacity of steel reinforced concrete beams with rectangular section" . | Journal of Traffic and Transportation Engineering 24 . 1 (2024) : 146-157 . |
| APA | Lin, Shang-Shun , Ji, Bang-Chong , Xia, Zhang-Hua , Liu, Jun-Ping , Lin, Jian-Fan , Zhao, Jin-Bing . Ultimate flexural capacity of steel reinforced concrete beams with rectangular section . | Journal of Traffic and Transportation Engineering , 2024 , 24 (1) , 146-157 . |
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As the main force component of cable suspending structure, the cable would have the problems of aging and damage in the bridge operation stage. How to quickly identify the damage of the cable is of great significance to ensure the healthy and stable development of the traffic in China. According to different physical quantities, the damage identification methods such as dynamic based damage identification method, static based damage identification method, dynamic and static combined damage identification method were introduced, and the application of intelligent algorithms of neural network and genetic algorithm in cable damage identification were also discussed. Based on analysis on the damage identification methods for the cables, the problems existing in the damage identification of the cable were concluded. According to features of the actual bridge structural forms, such as external prestressed concrete bridges, long-span cable-stayed bridges, suspension bridges and concrete-filled steel tube arch bridges, etc., the corresponding adaptive identification method should be proposed, which will be more targeted and practical. With the development of big data technology, the combination of traditional indicators and intelligent algorithms will be the research development directions for cable damage identification. © Tongji University Press 2024.
Keyword ：
Arch bridges Arch bridges Cables Cables Cable stayed bridges Cable stayed bridges Damage detection Damage detection Genetic algorithms Genetic algorithms Prestressed concrete Prestressed concrete Tubular steel structures Tubular steel structures
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| GB/T 7714 | Xia, Zhanghua , Yu, Yingen , Xie, Jun et al. Recent Advances in Research on Damage Identification Method for Cables in Bridges [C] . 2024 : 161-175 . |
| MLA | Xia, Zhanghua et al. "Recent Advances in Research on Damage Identification Method for Cables in Bridges" . (2024) : 161-175 . |
| APA | Xia, Zhanghua , Yu, Yingen , Xie, Jun , Lai, Shiyong , Lin, Youqin , Wang, Zhifeng . Recent Advances in Research on Damage Identification Method for Cables in Bridges . (2024) : 161-175 . |
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索结构中,拉索响应与损伤之间处于高度非线性状态,常规数学模型对拉索损伤识别普遍存在精度欠佳问题.针对该问题创建了七丝钢绞线的拉索有限元模型,提出基于组合指标的CNN&LSTM神经网络损伤识别方法.借助该拉索有限元模型模拟 4 类损伤工况,分类提取响应.对比分析总能量变化率、频率、能量比偏差与能量比方差等不同指标对损伤程度的表征,建立能量与频率相结合的组合损伤指标.对比分析联合CNN&LSTM神经网络面对各损伤指标,以及传统中单独的卷积神经网络(CNN)与长短记忆法(LSTM)针对组合损伤指标的识别结果.研究发现,基于组合指标的联合CNN&LSTM深度学习网络的拉索损伤识别准确率最高,达到 96.67%,高于CNN的86.63%及LSTM的82.15%,表明CNN&LSTM在斜拉索损伤识别应用中具有较大潜力.
Keyword ：
卷积神经网络 卷积神经网络 拉索有限元 拉索有限元 损伤识别 损伤识别 组合指标 组合指标 长短记忆法 长短记忆法
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| GB/T 7714 | 朱三凡 , 刘世凤 , 余印根 et al. 联合CNN与LSTM神经网络的斜拉索损伤识别方法 [J]. | 福建理工大学学报 , 2024 , 22 (4) : 326-332 . |
| MLA | 朱三凡 et al. "联合CNN与LSTM神经网络的斜拉索损伤识别方法" . | 福建理工大学学报 22 . 4 (2024) : 326-332 . |
| APA | 朱三凡 , 刘世凤 , 余印根 , 王志俸 , 夏樟华 . 联合CNN与LSTM神经网络的斜拉索损伤识别方法 . | 福建理工大学学报 , 2024 , 22 (4) , 326-332 . |
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针对预制拼装钢筋混凝土(RC)管廊自重大和吊装难的问题，通过试设计超高性能混凝土(UHPC)预制拼装管廊主体构造，并进行1∶2模型的静力试验；得到UHPC综合管廊的顶底板和侧墙在不同荷载作用下的破坏形态、荷载-变形关系、钢筋和混凝土应变，并对整体受力机制、破坏模式和极限承载力进行分析.结果表明，UHPC管廊重量可减少30%,破坏模式与RC管廊基本一致，均为弯曲破坏，但UHPC管廊的开裂荷载和变形能力明显提高.在实测数据的基础上，通过简化拉压区应力分布图形，建立UHPC综合管廊抗弯极限承载力的计算方法，得到的计算值与实测值吻合良好，误差在10%左右.提出的计算公式可为UHPC综合管廊的设计计算提供参考.
Keyword ：
抗弯承载力 抗弯承载力 综合管廊 综合管廊 超高性能混凝土 超高性能混凝土 静力试验 静力试验 预制拼装 预制拼装
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| GB/T 7714 | 许有胜 , 杨纪豪 , 夏樟华 et al. UHPC预制拼装综合管廊的抗弯性能试验 [J]. | 福州大学学报(自然科学版) , 2024 , 52 (03) : 353-361 . |
| MLA | 许有胜 et al. "UHPC预制拼装综合管廊的抗弯性能试验" . | 福州大学学报(自然科学版) 52 . 03 (2024) : 353-361 . |
| APA | 许有胜 , 杨纪豪 , 夏樟华 , 孙康平 . UHPC预制拼装综合管廊的抗弯性能试验 . | 福州大学学报(自然科学版) , 2024 , 52 (03) , 353-361 . |
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为明确并提升承插式拼装桥墩抵抗压弯扭等复合荷载的能力，提出了一种结合灌浆套筒和承插口组合连接的新型承插装配式墩，通过复合荷载作用下的拟静力试验对比了现浇(reinforced concrete, RC)、灌浆套筒(grouting and sleeve, GS)、承插口(socket with ultra-high performance concrete, SU)和结合套筒连接钢筋的新型承插(grouting sleeve and socket with ultra-high performance concrete, GSU)连接拼装桥墩的损伤机理和滞回性能，结合有限元模型重点讨论了承插口深度对滞回性能的影响。结果表明：4个构件的破坏模式都是以受弯破坏为主的弯扭破坏，其中SU构件出现了轻微拔起的现象，而对应的GSU构件并未出现该现象，与RC构件接近；各构件的剪力-墩顶位移骨架发展趋势比较一致，由于GSU构件纵向钢筋连续，具有更好的整体性能，其抗弯承载力与RC构件接近，且明显大于SU和GS构件，4个构件弯曲滞回耗能较为接近；承插口深度为1.0倍截面宽度的GSU构件抗扭承载力略高于RC构件，且明显大于其余装配式墩，GSU构件的扭转刚度、延性系数和耗能能力均大于其他3个墩；当承插口深度采用0.5倍构件截面宽度时，新型承插GSU构件的抗弯和抗扭承载力均略高于整体现浇构件，具有良好的抵抗压弯扭荷载的能力，可以实现浅承插口连接。研究结果可为压弯扭复合作用下装配式墩的应用提供试验依据。
Keyword ：
压弯扭作用 压弯扭作用 抗震性能 抗震性能 拟静力试验 拟静力试验 新型承插 新型承插 桥梁工程 桥梁工程 浅承插口 浅承插口 节段拼装桥墩 节段拼装桥墩
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| GB/T 7714 | 夏樟华 , 谢君 , 范千 et al. 压弯扭作用下新型承插装配式桥墩的抗震性能 [J]. | 振动与冲击 , 2024 , 43 (12) : 118-130 . |
| MLA | 夏樟华 et al. "压弯扭作用下新型承插装配式桥墩的抗震性能" . | 振动与冲击 43 . 12 (2024) : 118-130 . |
| APA | 夏樟华 , 谢君 , 范千 , 陈金盛 , 林元铮 . 压弯扭作用下新型承插装配式桥墩的抗震性能 . | 振动与冲击 , 2024 , 43 (12) , 118-130 . |
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已有研究表明，榫卯-灌浆套筒混合连接装配式方墩（简称混合连接拼装桥墩）的抗震性能接近于整体现浇桥墩。为进一步探讨混合连接拼装桥墩的轴压性能，以钢管的长度、直径以及壁厚等为变化参数，进行1个整体现浇桥墩（编号ZT）和4个混合连接拼装桥墩（编号GTA-0～GTD-0）的轴压承载力试验，结果表明，GTA-0～GTD-0试件的承载力比ZT试件提高了10.1%～14.4%，其延性系数均大于ZT试件；GTA-0～GTD-0试件的轴压承载力随钢管直径和长度的增大而增大，而钢管壁厚对于试件承载力的影响较小；拼装桥墩的破坏位置随着钢管长度的增加而上移，逐渐接近于整体现浇桥墩，但二者的破坏模式基本相同。
Keyword ：
承载力 承载力 桥墩 桥墩 混合接头 混合接头 装配式 装配式 轴压试验 轴压试验
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| GB/T 7714 | 林上顺 , 何乐 , 夏樟华 et al. 榫卯-灌浆套筒混合连接装配式方墩轴压性能研究 [J]. | 重庆大学学报 , 2024 , 47 (06) : 58-67 . |
| MLA | 林上顺 et al. "榫卯-灌浆套筒混合连接装配式方墩轴压性能研究" . | 重庆大学学报 47 . 06 (2024) : 58-67 . |
| APA | 林上顺 , 何乐 , 夏樟华 , 秦志清 , 张乐彤 , 陈治雄 . 榫卯-灌浆套筒混合连接装配式方墩轴压性能研究 . | 重庆大学学报 , 2024 , 47 (06) , 58-67 . |
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为研究玄武岩纤维增强聚合物(basalt fiber reinforced polymer, BFRP)模壳不排水加固钢筋混凝土(reinforced concrete, RC)墩柱抗震恢复力模型，在拟静力试验基础上，采用OpenSees有限元软件对模壳加固墩柱进行数值分析，主要研究参数为填充层混凝土强度、模壳厚度、加固高度、轴压比。研究表明：填充层混凝土强度等级越高，墩柱抗震性能有所增强，但C40以上的填充层混凝土强度等级墩柱的抗震性能较为接近；模壳加固厚度较大墩柱的抗震性能优于厚度较小墩柱；当模壳加固高度较高时，墩柱的抗震性能较好，当加固高度大于2～3倍原墩柱塑性铰高度时，抗震性能提升效果趋于稳定；轴压比越大，墩柱的刚度退化较快，不利延性发展。后通过数据回归分析，建立了BFRP模壳加固RC墩柱恢复力模型，对比可知，恢复力模型与试验曲线拟合较好，能有效反映加固墩柱的滞回性能，可为此类结构的抗震性能分析提供参考。
Keyword ：
不排水加固 不排水加固 参数分析 参数分析 恢复力模型 恢复力模型 有限元 有限元 玄武岩纤维增强聚合物(BFRP)模壳 玄武岩纤维增强聚合物(BFRP)模壳 钢筋混凝土(RC)墩柱 钢筋混凝土(RC)墩柱
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| GB/T 7714 | 张景杭 , 夏樟华 , 姜绍飞 et al. BFRP模壳不排水加固RC墩柱恢复力模型 [J]. | 振动与冲击 , 2024 , 43 (16) : 192-203 . |
| MLA | 张景杭 et al. "BFRP模壳不排水加固RC墩柱恢复力模型" . | 振动与冲击 43 . 16 (2024) : 192-203 . |
| APA | 张景杭 , 夏樟华 , 姜绍飞 , 洪俊贤 , 朱朴 , 范千 . BFRP模壳不排水加固RC墩柱恢复力模型 . | 振动与冲击 , 2024 , 43 (16) , 192-203 . |
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With the rapid development of urban transportation，its construction requirements are increasingly high，urban bridges are mainly ramp bridges，ramps and other non-regular bridges. In order to obtain the damage mechanism and hysteresis characteristics of the fabricated pier under the combined seismic action of compression-bending- shearing-torsion，the quasi-static test for three types of bridge piers including prefabricated piers with grouting sleeves（GS），prefabricated piers with grouting sleeve and concrete-filled steel tube（GSS）and cast-in-place reinforced concrete（RC）pier subjected to combined loads was carried out. Combining the shearing-torsion correlation curve in the existing code for design of concrete structures，the shearing and torsion load capacity of the fabricated pier under the combined load was analyzed and compared with the test results. The results show that the GS specimen and RC specimen are dominated by compression bending and torsion damage，while the GSS specimen with inserted steel tube shear keys undergo plastic hinge uplift and exhibit shear torsion damage. GS and RC speci⁃ mens have better bending energy dissipation capacity，while GSS specimen with the steel tube shear key has a larger bending capacity. The assembled pier joints resulted in weaker integrity，and the torsional load capacity of the GS and GSS specimens were less than that of the RC specimen. The shear torsion correlation of each specimen under combined load is close to the quarter-circle theoretical curve in the specification. The research results can provide a reference for the seismic performance analysis of fabricated piers with grouting sleeves under the combined action of compression-bending-shearing-torsion. © 2024 Hunan University. All rights reserved.
Keyword ：
Bridge piers Bridge piers Concrete construction Concrete construction Energy dissipation Energy dissipation Fabrication Fabrication Grouting Grouting Mortar Mortar Reinforced concrete Reinforced concrete Shearing Shearing Torsional stress Torsional stress Tubular steel structures Tubular steel structures Urban transportation Urban transportation
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| GB/T 7714 | Lin, Youqing , Lai, Shiyong , Xia, Zhanghua et al. Seismic Performance of Grouted Sleeve Fabricated RC Pier under Compression-bending-shearing-torsion Load [J]. | Journal of Hunan University Natural Sciences , 2024 , 51 (3) : 182-192 . |
| MLA | Lin, Youqing et al. "Seismic Performance of Grouted Sleeve Fabricated RC Pier under Compression-bending-shearing-torsion Load" . | Journal of Hunan University Natural Sciences 51 . 3 (2024) : 182-192 . |
| APA | Lin, Youqing , Lai, Shiyong , Xia, Zhanghua , Wang, Darong . Seismic Performance of Grouted Sleeve Fabricated RC Pier under Compression-bending-shearing-torsion Load . | Journal of Hunan University Natural Sciences , 2024 , 51 (3) , 182-192 . |
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