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学者姓名:陈彦江
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Abstract :
为研究受力筋灌浆套筒连接装配式混凝土桥墩的抗震加固方法,以受力筋灌浆套筒连接装配式混凝土桥墩和灌浆套筒-预应力筋连接装配式混凝土桥墩为研究对象,设计制作了两个1/6缩尺模型,并依据二者的震害特点提出了一种采用碳纤维复合材料-外置金属耗能装置(简称CFRP-EMD)的组合加固方法。选取近断层地震波作为输入,开展了单、双向激励下模型桥墩的振动台试验,从试验现象、基本动力特性、地震响应规律等方面分析了CFRP-EMD对两类装配式混凝土桥墩的加固效果。结果表明:地震作用下两类试件的主要震损包括墩身开裂、墩底接缝开合、接缝混凝土剥落压碎等;附加预应力筋连接可提高构件刚度和自复位能力,降低墩身和接缝的损伤速率和损伤程度;采用CFRP-EMD组合加固能够显著提高震损装配式构件的刚度、抗震变形能力和耗能能力;CFRP-EMD加固后灌浆套筒-预应力筋连接装配式混凝土桥墩的塑性变形更加合理。提出的组合加固设计方法和实施原则可用于装配式混凝土桥墩抗震加固中。
Keyword :
装配式桥墩 装配式桥墩 CFRP CFRP 近断层地震动 近断层地震动 振动台试验 振动台试验 抗震加固 抗震加固
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GB/T 7714 | 辛光涛 , 王瑾 , 许维炳 et al. CFRP-EMD加固灌浆套筒连接装配式桥墩振动台试验 [J]. | 哈尔滨工业大学学报 , 2023 , 55 (09) : 63-71 . |
MLA | 辛光涛 et al. "CFRP-EMD加固灌浆套筒连接装配式桥墩振动台试验" . | 哈尔滨工业大学学报 55 . 09 (2023) : 63-71 . |
APA | 辛光涛 , 王瑾 , 许维炳 , 杜修力 , 陈彦江 , 王少剑 et al. CFRP-EMD加固灌浆套筒连接装配式桥墩振动台试验 . | 哈尔滨工业大学学报 , 2023 , 55 (09) , 63-71 . |
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Abstract :
本发明公开了一种小摇摆传动放大耗能复位阻尼装置,包括直齿条、小齿轮、大齿轮、正压高强螺栓、定位高强螺栓、传递钢构件、定位钢构件、腔体连接件、连接高强螺栓、腔体盖板、腔体壳、垫圈、转轴块、形状记忆合金块、内齿轮、铅体、U型钢构件、销栓、腔体封边。该型小摇摆传动放大耗能复位阻尼装置两端出现随墙体的小摇摆相对位移后,通过U型钢构件将位移传递到直齿条,直齿条上下移动令与其啮合的小齿轮发生转动,可以实现大齿轮多重剪切铅体耗能、大齿轮与腔体盖板摩擦耗能、大齿轮剪切形状记忆合金块耗能,并通过形状记忆合金块复位等多重耗能复位功能。本发明具有构造简单明确,施工工艺简单、耗能能力强、耗能稳定等优点。
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GB/T 7714 | 许维炳 , 胡瑞新 , 王瑾 et al. 一种小摇摆传动放大耗能复位阻尼装置 : CN202210660242.8[P]. | 2022-06-13 . |
MLA | 许维炳 et al. "一种小摇摆传动放大耗能复位阻尼装置" : CN202210660242.8. | 2022-06-13 . |
APA | 许维炳 , 胡瑞新 , 王瑾 , 解梦飞 , 陈彦江 , 钱增志 et al. 一种小摇摆传动放大耗能复位阻尼装置 : CN202210660242.8. | 2022-06-13 . |
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Abstract :
预制拼装桥墩体系(Pre-fabricated Concrete PierSystem,PCP)抗震性能是影响其推广、应用的关键.为加快PCP在中、高烈度等复杂恶劣工程环境中的设计、施工与建造,首先综述了 PCP节点连接的接缝形式、连接构造类型及典型工程示例,指出了 PCP常用3种接缝形式和6种连接构造力学性能的研究现状及其优缺点;其次,系统地梳理了 PCP抗震性能的研究进展,分析了不同连接条件下PCP的抗震性能,明晰了现有PCP抗震性能研究的不足及未来研究方向;最后,详细地论述了 PCP抗震性能提升方法的研究前沿,探究了耗能延性构造的设置、高性能材料的应用、新型装配式节点构造设计以及新型混合预制桥墩体系的提出等PCP抗震性能提升方法的优缺点和发展方向.结果表明:通过对装配式节点的合理设计以及薄弱区域的预处理,预制拼装桥墩体系的抗震性能能够达到"等同现浇"的设计原则.然而PCP在复杂恶劣工程环境中的推广应用仍面临以下关键问题:PCP既有节点连接方式、体系和改进措施的抗震性能研究成果亟需归纳;新型节点连接方式、新体系和新型改进措施亟待提出,相关抗震性能有待验证;既有和新型PCP抗震性能的理论分析及抗震设计方法尚需完善;适用于复杂恶劣环境的预制拼装桥墩设计、施工标准亟需制定.
Keyword :
预制拼装桥墩 预制拼装桥墩 综述 综述 改进措施 改进措施 抗震性能 抗震性能 桥梁工程 桥梁工程
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GB/T 7714 | 陈彦江 , 丁梦佳 , 许维炳 et al. 预制拼装桥墩体系及其抗震性能研究进展 [J]. | 中国公路学报 , 2022 , 35 (12) : 56-76 . |
MLA | 陈彦江 et al. "预制拼装桥墩体系及其抗震性能研究进展" . | 中国公路学报 35 . 12 (2022) : 56-76 . |
APA | 陈彦江 , 丁梦佳 , 许维炳 , 王瑾 , 方荣 , 杜修力 et al. 预制拼装桥墩体系及其抗震性能研究进展 . | 中国公路学报 , 2022 , 35 (12) , 56-76 . |
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Abstract :
Multi-particle dampers (M-PD) can be potentially applied in civil engineering because of their good damping effect and wide frequency band. However, because of their complex nonlinear mechanical properties and the lack of a reasonable mechanical model, their development and application in practical engineering are limited. Therefore, without considering the accumulation of particles, an equivalent inertia single-particle mechanical model (EISM) is proposed by introducing an inerter to consider the effect of particle rolling on the damping mechanism and performance. Dynamic analyses of the EISM single degree of freedom system in the non-collision stage and the periodic motion after collision are performed based on the analytical solution. The influence of inertance on the frequency response curve of dynamic amplification factors in the no-collision stage and the analytical solution for the symmetric two-impacts-per-cycle motion are discussed in detail. Numerical simulations and experimental verification are conducted to verify the rationality of the above theoretical analysis. The results show that EISM can further clarify the nonlinear characteristics of M-PD. The inertance has a significant influence on the frequency response curve of the dynamic amplification factors as well as the boundary conditions and stability of the analytical solution of the symmetric two-impacts-per-cycle motion. The proposed EISM and the corresponding theoretical analysis in this study can theoretically support further analysis of the vibration reduction mechanism and design of M-PDs. © 2021 John Wiley & Sons, Ltd.
Keyword :
Frequency response Frequency response Vibration analysis Vibration analysis Damping Damping Degrees of freedom (mechanics) Degrees of freedom (mechanics) Dynamic loads Dynamic loads
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GB/T 7714 | Huang, Xu-hong , Xu, Wei-bing , Wang, Jin et al. Equivalent model of a multi-particle damper considering particle rolling and its analytical solution [J]. | Structural Control and Health Monitoring , 2021 , 28 (6) . |
MLA | Huang, Xu-hong et al. "Equivalent model of a multi-particle damper considering particle rolling and its analytical solution" . | Structural Control and Health Monitoring 28 . 6 (2021) . |
APA | Huang, Xu-hong , Xu, Wei-bing , Wang, Jin , Yan, Wei-ming , Chen, Yan-jiang . Equivalent model of a multi-particle damper considering particle rolling and its analytical solution . | Structural Control and Health Monitoring , 2021 , 28 (6) . |
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Abstract :
The seismic performance and design method of fabricated concrete bridge piers limit their applications in complex and harsh environments. In this study, a continuous bridge pier in an 8-degree seismic fortification intensity area was considered as a prototype. Two 1/3-scale models were designed and manufactured. The specimens were connected via a grouted sleeve connections (SFP) and a grouted sleeve prestressing tendon composite connections (SSFP), respectively. Moreover, a cast-in-place 1/3-scale model (reinforcement concrete pier, RCP) was designed as a comparison specimen. Quasi-static experiments were performed on these three specimens. The seismic performance of the specimens was analysed according to the failure phenomena, bearing capacity, displacement ductility, stiffness, energy-dissipation capacity, and residual deformation. On these basis, a bearing-capacity estimation method for SFP (including SSFP) was developed and validated. The results indicated that the damage to the SFP and SSFP mainly accumulated along the top and bottom of the sleeves. The plastic hinge area of the SFP and SSFP moved up or down. Thus, the damage to the SFP and SSFP was concentrated at the joints. Cracks first occurred at the seam of the two fabricated specimens when the loading drift was relatively small. Then, the concrete at the loading edge of the joints was crushed. Furthermore, the longitudinal bars yielded and broke. Finally, the specimens failed. Compared with the RCP, the SFP and the SSFP had larger yield and ultimate displacements. The bearing capacities of the RCP and the SFP were similar. However, the bearing capacity of the SSFP was significantly higher. The bearing capacities of the SFP and SSFP did not decrease significantly before the specimens failed. Compared with the RCP, the SFP had a lower initial stiffness, a lower stiffness degradation rate, similar displacement ductility, smaller residual displacement, and less cumulative energy dissipation. The SSFP was better than the SFP with regard to the displacement ductility, initial stiffness, and cumulative energy dissipation. Thus, the SFP and SSFP can satisfy the seismic requirements of high-intensity areas. The proposed bearing-capacity estimation method can be used for the seismic design and evaluation of SFPs and SSFPs.
Keyword :
High-intensity area High-intensity area Pseudo-static test Pseudo-static test Bearing capacity Bearing capacity Grouted sleeve connections Grouted sleeve connections Fabricated pier Fabricated pier
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GB/T 7714 | Xin, Guangtao , Xu, Weibing , Wang, Jin et al. Seismic performance of fabricated concrete piers with grouted sleeve joints and bearing-capacity estimation method [J]. | STRUCTURES , 2021 , 33 : 169-186 . |
MLA | Xin, Guangtao et al. "Seismic performance of fabricated concrete piers with grouted sleeve joints and bearing-capacity estimation method" . | STRUCTURES 33 (2021) : 169-186 . |
APA | Xin, Guangtao , Xu, Weibing , Wang, Jin , Yan, Xiaoyu , Chen, Yanjiang , Yan, Weiming et al. Seismic performance of fabricated concrete piers with grouted sleeve joints and bearing-capacity estimation method . | STRUCTURES , 2021 , 33 , 169-186 . |
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Abstract :
桥梁伸缩装置(以下简称伸缩缝)使用环境恶劣、受荷形式复杂,易出现多种病害.伸缩缝病害会造成桥梁耐久性降低,车致桥梁动力响应加重等不利现象.因此,伸缩缝病害机理及其处置方法和考虑伸缩缝参数影响的车-桥耦合动力响应规律研究受到了广泛关注.本文综述了桥梁伸缩缝力学性能,常见病害及其影响,病害机理及其处置方法等的发展现状;重点讨论了考虑伸缩缝参数及其变化影响的桥梁动力响应的研究进展及存在的问题;展望了未来桥梁伸缩缝研究中有待解决的关键问题.
Keyword :
病害 病害 伸缩缝 伸缩缝 车-桥耦合振动 车-桥耦合振动 动力响应 动力响应 结构韧性 结构韧性
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GB/T 7714 | 肖波 , 许维炳 , 闫晓宇 et al. 公路桥面伸缩装置及其对桥梁静动力性能影响综述 [J]. | 防灾减灾工程学报 , 2021 , 41 (1) : 167-180 . |
MLA | 肖波 et al. "公路桥面伸缩装置及其对桥梁静动力性能影响综述" . | 防灾减灾工程学报 41 . 1 (2021) : 167-180 . |
APA | 肖波 , 许维炳 , 闫晓宇 , 闫维明 , 陈彦江 , 王瑾 et al. 公路桥面伸缩装置及其对桥梁静动力性能影响综述 . | 防灾减灾工程学报 , 2021 , 41 (1) , 167-180 . |
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Abstract :
灌浆套筒连接装配式混凝土桥墩是目前中、低烈度区装配式桥梁常用的下部构件形式,现阶段该型装配式桥墩的抗震加固方法欠缺.以灌浆套筒连接装配式混凝土桥墩为研究对象,设计制作了其1/6的缩尺模型,并基于其震损特点提出了一种采用CFRP-外置耗能钢筋的组合加固方式,开展了相同激励条件下加固前后桥墩试件的振动台试验.结果表明,墩身开裂、混凝土剥落、压碎以及墩底接缝开合等是灌浆套筒连接装配式混凝土桥墩的主要震损模式;采用组合加固有效增加了震后装配式桥墩试件的刚度,减少了试件墩顶的水平位移,提高了加固试件的延性及耗能能力.
Keyword :
振动台试验 振动台试验 加固 加固 CFRP CFRP 装配式桥墩 装配式桥墩
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GB/T 7714 | 董晔旭 , 许维炳 , 王瑾 et al. 灌浆套筒连接装配式混凝土桥墩CFRP-外置耗能钢筋组合加固效果研究 [J]. | 石家庄铁道大学学报(自然科学版) , 2021 , 34 (3) : 15-21,50 . |
MLA | 董晔旭 et al. "灌浆套筒连接装配式混凝土桥墩CFRP-外置耗能钢筋组合加固效果研究" . | 石家庄铁道大学学报(自然科学版) 34 . 3 (2021) : 15-21,50 . |
APA | 董晔旭 , 许维炳 , 王瑾 , 陈彦江 , 辛光涛 . 灌浆套筒连接装配式混凝土桥墩CFRP-外置耗能钢筋组合加固效果研究 . | 石家庄铁道大学学报(自然科学版) , 2021 , 34 (3) , 15-21,50 . |
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Abstract :
颗粒阻尼技术因减振效果好、作用频带宽等优点使其在土木工程领域中具有良好的应用前景,然而因其具有高度复杂的非线性力学特性,并缺少合理的力学模型,限制了其在实际工程中的应用和发展。鉴于此,以土木工程应用为背景,在不考虑阻尼颗粒发生堆积的前提下,通过引入惯容器来考虑颗粒群滚动对阻尼器减振机理及减振效果影响,建立了考虑惯容的多颗粒阻尼器等效单颗粒力学模型;结合颗粒运动状态,分别进行了未碰撞时及碰撞发生后多颗粒阻尼器单自由度结构的响应分析,重点探讨了惯容系数对未碰撞时动力放大系数频响曲线及碰撞发生后周期2次碰撞稳态解析解的影响规律,并采用数值仿真和试验方法进行验证。结果表明,考虑惯容属性后等效模型能够进...
Keyword :
惯容 惯容 周期运动 周期运动 多颗粒阻尼器 多颗粒阻尼器 稳定性 稳定性 等效模型 等效模型
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GB/T 7714 | 黄绪宏 , 许维炳 , 王瑾 et al. 考虑惯容的颗粒阻尼器等效力学模型及其受控结构稳态解研究 [J]. | 工程力学 , 2021 , 38 (04) : 136-149 . |
MLA | 黄绪宏 et al. "考虑惯容的颗粒阻尼器等效力学模型及其受控结构稳态解研究" . | 工程力学 38 . 04 (2021) : 136-149 . |
APA | 黄绪宏 , 许维炳 , 王瑾 , 闫维明 , 陈彦江 . 考虑惯容的颗粒阻尼器等效力学模型及其受控结构稳态解研究 . | 工程力学 , 2021 , 38 (04) , 136-149 . |
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Abstract :
高耸结构具有自振周期长、对低频激励敏感、抗震性能要求高等特点,为明确高耸结构在不同地震强度作用下的动力响应规律,本文以某典型高耸电视塔结构为原型,按照1:20缩尺比例设计制作了其缩尺模型。分别开展了二类场地地震动、长周期非脉冲型地震动、近断层脉冲型地震动在小震、中震条件下的一系列振动台试验。结果表明:高耸结构在地震动作用下为多阶振型参与振动;高耸结构在不同类型地震动作用下的动力响应规律大致遵循:长周期地震动 > 脉冲型地震动 > 二类场地震动;当脉冲型地震动的速度脉冲周期接近于原结构基本振动周期时,高耸结构的地震响应较同类型地震动更为显著;高耸建筑顶部在长周期和脉冲型地震动作用下具有显著的鞭梢效应。
Keyword :
Towering Structures Towering Structures 动力响应 动力响应 Vibrator Test Vibrator Test Dynamic Response Dynamic Response Seismic Intensity Seismic Intensity 高耸建筑 高耸建筑 振动台试验 振动台试验 地震强度 地震强度
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GB/T 7714 | 黄健辉 , 陈彦江 , 许维炳 et al. 不同地震动作用下高耸结构的地震响应规律研究 [J]. | 土木工程 , 2021 , 10 (06) : 554-560 . |
MLA | 黄健辉 et al. "不同地震动作用下高耸结构的地震响应规律研究" . | 土木工程 10 . 06 (2021) : 554-560 . |
APA | 黄健辉 , 陈彦江 , 许维炳 , 王瑾 , 沈铂坦 , 李娜娜 . 不同地震动作用下高耸结构的地震响应规律研究 . | 土木工程 , 2021 , 10 (06) , 554-560 . |
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Abstract :
为研究黏滞阻尼器(viscous damper, VD)和双调谐质量阻尼器(double tuned mass damper, DTMD)对曲线高墩刚构桥的减震控制效果,基于OpenSees建立某曲线高墩刚构桥的非线性分析模型,选取三条近断层脉冲型地震动对其进行动力时程分析。分别探究了VD的阻尼系数和阻尼指数,以及DTMD的上下层结构的阻尼比、质量比、频率比等阻尼器参数对其在曲线高墩刚构桥中的减震效果影响规律。结果表明:在分析的阻尼系数、阻尼指数变化范围内,VD对曲线高墩刚构桥墩顶位移减震率在9.42%~15.28%范围内,近断层脉冲型地震动作用下黏滞阻尼器对曲线高墩刚构桥的减震效果不佳。设计...
Keyword :
曲线刚构桥 曲线刚构桥 双调谐质量阻尼器(DTMD) 双调谐质量阻尼器(DTMD) 减震控制 减震控制 时程分析 时程分析
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GB/T 7714 | 肖波 , 郑永瑞 , 王洪国 et al. 近断层脉冲型地震动作用下黏滞阻尼器和双调谐质量阻尼器对曲线高墩刚构桥减震控制 [J]. | 科学技术与工程 , 2021 , 21 (25) : 10931-10939 . |
MLA | 肖波 et al. "近断层脉冲型地震动作用下黏滞阻尼器和双调谐质量阻尼器对曲线高墩刚构桥减震控制" . | 科学技术与工程 21 . 25 (2021) : 10931-10939 . |
APA | 肖波 , 郑永瑞 , 王洪国 , 许维炳 , 陈彦江 , 王少剑 . 近断层脉冲型地震动作用下黏滞阻尼器和双调谐质量阻尼器对曲线高墩刚构桥减震控制 . | 科学技术与工程 , 2021 , 21 (25) , 10931-10939 . |
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