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学者姓名：韩强
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摘要 ：
The diamond-shaped pylons have been widely used in engineering practice, due to their cost effectiveness and appealing aesthetics, particularly for the cable-stayed bridges with large clearance. However, the diamondshaped pylons have both inward and outward inclinations, which may result in complicated seismic behavior when subjected to earthquake excitations. To this end, the seismic performance of a typical diamond-shaped pylon in the transverse direction is investigated in this paper. A reduced-scale specimen of the diamondshaped pylon was tested under cyclic quasi-static load to evaluate the damage patterns and the hysteretic responses. The numerical models of the diamond-shaped pylon were developed and then verified against the experimental results. The effects of the geometric configurations, loading protocols, and stiffness of crossbeam on the seismic performance of the diamond-shaped pylon are assessed based on the numerical results of parametric studies. The test results indicate that the plastic hinges were formed at the diamond-shaped pylon legs near the middle intersections. The following parametric analyses imply that the failure modes and damage regions would be changed with the pylon shapes, stiffness of lower and middle crossbeams, and loading protocols.
关键词 ：
Cable-stayed bridge Cable-stayed bridge Diamond-shaped pylon Diamond-shaped pylon Numerical analysis Numerical analysis Quasi-static test Quasi-static test Seismic performance Seismic performance
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| GB/T 7714 | Zhang, Chao , Wen, Jianian , Han, Qiang et al. Transverse seismic response of diamond-shaped pylon in cable-stayed bridge: Experiment and analysis [J]. | ENGINEERING STRUCTURES , 2022 , 250 . |
| MLA | Zhang, Chao et al. "Transverse seismic response of diamond-shaped pylon in cable-stayed bridge: Experiment and analysis" . | ENGINEERING STRUCTURES 250 (2022) . |
| APA | Zhang, Chao , Wen, Jianian , Han, Qiang , Du, Xiuli , Lai, Zhichao , Fu, Guanghui . Transverse seismic response of diamond-shaped pylon in cable-stayed bridge: Experiment and analysis . | ENGINEERING STRUCTURES , 2022 , 250 . |
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摘要 ：
Bayesian inference methods typically require a considerable amount of computation time in the calculation of forward models. This limitation restricts the application of Bayesian inference methods for the parameter identification of complex engineering problems. We propose a novel likelihood-free Bayesian inference method for structural parameter identification. An adaptive Gaussian surrogate model (GSM) was integrated with the transitional Markov chain Monte Carlo (MCMC) method for Bayesian inference. The log-likelihood function was approximated with GSM and the transitional MCMC method was used to generate the posterior distribution samples. A response reconstruction technique was combined with the likelihood-free Bayesian inference method for the parameter identification. Both numerical studies and experimental studies were conducted to verify the accuracy and efficiency of the proposed method. The results showed that the proposed method could be used to estimate the posterior probabilities of unknown structural parameters. Additionally, the proposed method was more efficient than the delayed rejection adaptive Metropolis and Gibbs sampling methods.
关键词 ：
Bayesian inference Bayesian inference Condition assessment Condition assessment Damage detection Damage detection Gaussian surrogate model Gaussian surrogate model Likelihood-free inference Likelihood-free inference Response reconstruction Response reconstruction
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| GB/T 7714 | Ni, Pinghe , Han, Qiang , Du, Xiuli et al. Bayesian model updating of civil structures with likelihood-free inference approach and response reconstruction technique [J]. | MECHANICAL SYSTEMS AND SIGNAL PROCESSING , 2022 , 164 . |
| MLA | Ni, Pinghe et al. "Bayesian model updating of civil structures with likelihood-free inference approach and response reconstruction technique" . | MECHANICAL SYSTEMS AND SIGNAL PROCESSING 164 (2022) . |
| APA | Ni, Pinghe , Han, Qiang , Du, Xiuli , Cheng, Xiaowei . Bayesian model updating of civil structures with likelihood-free inference approach and response reconstruction technique . | MECHANICAL SYSTEMS AND SIGNAL PROCESSING , 2022 , 164 . |
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摘要 ：
震后可恢复功能桥梁结构之摇摆桥梁研究综述
关键词 ：
摇摆桥墩 摇摆桥墩 分析模型 分析模型 抗震设计 抗震设计 可恢复功能 可恢复功能 桥梁工程 桥梁工程 综述 综述
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| GB/T 7714 | 韩强 , 贾振雷 , 周雨龙 et al. 震后可恢复功能桥梁结构之摇摆桥梁研究综述 [J]. | 韩强 , 2021 , 34 (2) : 118-133 . |
| MLA | 韩强 et al. "震后可恢复功能桥梁结构之摇摆桥梁研究综述" . | 韩强 34 . 2 (2021) : 118-133 . |
| APA | 韩强 , 贾振雷 , 周雨龙 , 杜修力 , 中国公路学报 . 震后可恢复功能桥梁结构之摇摆桥梁研究综述 . | 韩强 , 2021 , 34 (2) , 118-133 . |
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摘要 ：
桥梁结构防落梁与碰撞装置综述
关键词 ：
落梁 落梁 最小支承长度 最小支承长度 桥梁工程 桥梁工程 防落梁和防碰撞装置 防落梁和防碰撞装置 碰撞 碰撞 抗震规范 抗震规范
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| GB/T 7714 | 张轩 , 温佳年 , 韩强 et al. 桥梁结构防落梁与碰撞装置综述 [J]. | 张轩 , 2021 , 47 (4) : 403-420 . |
| MLA | 张轩 et al. "桥梁结构防落梁与碰撞装置综述" . | 张轩 47 . 4 (2021) : 403-420 . |
| APA | 张轩 , 温佳年 , 韩强 , 杜修力 , 北京工业大学学报 . 桥梁结构防落梁与碰撞装置综述 . | 张轩 , 2021 , 47 (4) , 403-420 . |
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摘要 ：
为实现摇摆-自复位(Rocking Self-Centering,RSC)双层桥梁排架墩的地震损伤控制设计和震后功能快速恢复,结合外置角钢、耗能钢筋、无黏结预应力筋设计了仅上层摇摆(模型1)、仅下层摇摆(模型2)以及双层均摇摆(模型3)的3种RSC双层排架墩。同时设计了一个普通钢筋混凝土(Reinforced Concrete,RC)双层排架墩(模型4)作为参考。建立了不同排架墩的抗震数值分析模型,并结合1个RSC单层排架墩的拟静力试验结果验证了建模方法的准确性。定义了RSC双层排架墩在强震下的失效准则,分析了近断层地震动下各双层排架墩的地震反应。结果表明:与普通RC双层排架墩相比,各RSC双...
关键词 ：
桥梁 桥梁 摇摆-自复位 摇摆-自复位 失效准则 失效准则 双层排架墩 双层排架墩 抗震结构 抗震结构
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| GB/T 7714 | 孙治国 , 赵泰儀 , 韩强 et al. 摇摆-自复位双层桥梁排架墩抗震体系研究 [J]. | 振动工程学报 , 2021 , 34 (03) : 472-480 . |
| MLA | 孙治国 et al. "摇摆-自复位双层桥梁排架墩抗震体系研究" . | 振动工程学报 34 . 03 (2021) : 472-480 . |
| APA | 孙治国 , 赵泰儀 , 韩强 , 王东升 , 亓兴军 . 摇摆-自复位双层桥梁排架墩抗震体系研究 . | 振动工程学报 , 2021 , 34 (03) , 472-480 . |
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摘要 ：
基于大震不倒,且震后无需修复或者稍加修复就能恢复正常使用功能理念的可恢复功能桥梁防震结构是桥梁地震工程研究的热点之一.设置可更换构件是实现桥梁结构可恢复功能的一种有效途径,附加可更换构件可恢复功能桥梁防震结构是指:在结构适当部位设置减震装置作为可更换构件,通过牺牲可更换构件从而保护主体结构免受损伤或大幅减小损伤,震后通过更换损坏构件以恢复结构正常使用功能.对附加可更换构件的可恢复功能桥梁防震结构的研究进行了系统的梳理和总结.首先介绍了附加可更换构件的可恢复功能桥梁防震结构的设计理念;然后总结了目前国内外可更换构件的类型、附加可更换构件桥梁结构的抗震性能及其抗震设计方法的研究现状;并通过实际工程应用案例说明了附加可更换构件的可恢复功能桥梁防震结构的工程实践价值;最后探讨了附加可更换构件的可恢复功能桥梁防震结构的发展趋势.现有研究表明,附加可更换构件桥梁结构的功能可恢复性已得到了工程界的认可,但仍然需要在新材料、新构造形式的开发,系统性的试验研究以及抗震性能优化设计等方面开展深入研究.
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| GB/T 7714 | 韩强 , 董慧慧 , 王利辉 et al. 基于可更换构件的可恢复功能桥梁防震结构研究综述 [J]. | 中国公路学报 , 2021 , 34 (9) : 215-230 . |
| MLA | 韩强 et al. "基于可更换构件的可恢复功能桥梁防震结构研究综述" . | 中国公路学报 34 . 9 (2021) : 215-230 . |
| APA | 韩强 , 董慧慧 , 王利辉 , 杜修力 . 基于可更换构件的可恢复功能桥梁防震结构研究综述 . | 中国公路学报 , 2021 , 34 (9) , 215-230 . |
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摘要 ：
大震不倒,且震后无需修复或者稍加修复就能恢复正常使用功能理念的震后可恢复功能桥梁结构是桥梁地震工程研究的热点之一.同时具有控制损伤和自复位能力的摇摆结构,是实现结构可恢复功能的一种有效途径.对摇摆桥梁结构的研究历程与进展进行了较为系统的梳理和总结.首先介绍了摇摆结构的起源及其在桥梁工程的应用,然后针对摇摆桥梁结构的研发和试验研究、拟静力行为分析方法、动力行为分析模型、抗震设计方法等方面分别进行了探讨.现有研究表明:摇摆桥梁的合理构造和抗震性能得到了各国学者的试验验证,分析理论和设计方法得到不断的发展,但仍然存在一些需要解决的问题.摇摆构造需面向工程需求,研发构造简单、传力机制可靠、耐久性好的摇摆桥梁结构;动力分析理论上,现有模型没有考虑受压区高度影响,需要发展三维动力分析模型和动能折减系数确定方法,使地震作用下摇摆桥梁地震响应和真实情况相一致;缺乏考虑边界条件约束的摇摆桥梁全桥体系动力响应分析;抗震设计上,主要存在性能指标确定等问题,即在明确摇摆结构性能特征基础上,如何平衡抗震性能与经济性能.
关键词 ：
可恢复功能 可恢复功能 摇摆桥墩 摇摆桥墩 桥梁工程 桥梁工程 综述 综述 抗震设计 抗震设计 分析模型 分析模型
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| GB/T 7714 | 韩强 , 贾振雷 , 周雨龙 et al. 震后可恢复功能桥梁结构之摇摆桥梁研究综述 [J]. | 中国公路学报 , 2021 , 34 (2) : 118-133 . |
| MLA | 韩强 et al. "震后可恢复功能桥梁结构之摇摆桥梁研究综述" . | 中国公路学报 34 . 2 (2021) : 118-133 . |
| APA | 韩强 , 贾振雷 , 周雨龙 , 杜修力 . 震后可恢复功能桥梁结构之摇摆桥梁研究综述 . | 中国公路学报 , 2021 , 34 (2) , 118-133 . |
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摘要 ：
提出了一种可用于高烈度区的新型波纹管-UHPC槽预制拼装桥墩连接方式,数值模拟分析了新型波纹管-UH-PC槽预制拼装桥墩与现浇桥墩的承载力、失效模式与耗能等抗震性能.结果 表明,新型波纹管-UHPC槽预制拼装桥墩的承载力、延展性等抗震性能与现浇桥墩接近,从而验证了该新型波纹管-UHPC槽连接方式用于高烈度区预制装配桥墩抗震设计的有效性,研究结果对于预制拼装桥墩在高烈度区的应用有参考价值.
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| GB/T 7714 | 张升旺 , 宋彦臣 , 韩强 . 新型波纹管-UHPC槽连接预制拼装桥墩抗震性能数值模拟分析 [J]. | 市政技术 , 2021 , 39 (10) : 58-63,78 . |
| MLA | 张升旺 et al. "新型波纹管-UHPC槽连接预制拼装桥墩抗震性能数值模拟分析" . | 市政技术 39 . 10 (2021) : 58-63,78 . |
| APA | 张升旺 , 宋彦臣 , 韩强 . 新型波纹管-UHPC槽连接预制拼装桥墩抗震性能数值模拟分析 . | 市政技术 , 2021 , 39 (10) , 58-63,78 . |
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摘要 ：
Precast columns are widely adopted in Accelerated Bridge Construction (ABC) due to its fast construction speed, environment amity and little interference to existing traffic. The bending behavior of precast columns with grouted sleeve connections under seismic effect has been widely studied. However, studies on the shear behavior of this kind of columns (for example, short columns under seismic effect) are limited, which restricts the application of ABC in seismic regions. This study proposes an approach for evaluating the shear cracking mechanism of sleeve region and the shear strength of precast columns with grouted sleeve connection. In this approach, the sleeve units and concrete units in the sleeve region are established according to the different stiffness between sleeve and concrete, individually. The cracking angle of membrane element of units is solved based on the Modified Compression Field Theory (MCFT). Thus, the crack developing diagram is drawn in light of the cracking range of units. An improved model for computing the shear strength of precast columns with grouted sleeve connection is presented by the predicted cracking method in this paper. A skeleton curve prediction method based on the principal compressive strain in compression zone has also been proposed and verified. In general, the improved MCFT method given in the paper is effective for predicting shear failure of precast bridge columns with sleeve connection.
关键词 ：
Cracking mechanism Cracking mechanism Grouted sleeve Grouted sleeve MCFT MCFT Precast bridge column Precast bridge column Shear strength Shear strength
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| GB/T 7714 | Han, Qiang , Li, Xiaopeng , Xu, Kun et al. Shear strength and cracking mechanism of precast bridge columns with grouted sleeve connections [J]. | ENGINEERING STRUCTURES , 2021 , 230 . |
| MLA | Han, Qiang et al. "Shear strength and cracking mechanism of precast bridge columns with grouted sleeve connections" . | ENGINEERING STRUCTURES 230 (2021) . |
| APA | Han, Qiang , Li, Xiaopeng , Xu, Kun , Lu, Yanqiu , Du, Xiuli , Wang, Zhiqiang . Shear strength and cracking mechanism of precast bridge columns with grouted sleeve connections . | ENGINEERING STRUCTURES , 2021 , 230 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
In this paper, the ideas of deep auto-encoder (DAE) and manifold learning are adopted to solve the problem of structural condition diagnosis. A scalable decentralized end-to-end unsupervised structural condition diagnostic framework is proposed. Three damage diagnosis mechanisms are clarified. The structural damage diagnosis approaches are presented from the latent coding domain and the time domain, respectively. In the latent coding domain, an undercomplete DAE is established to extract the distribution of the low-dimensional manifold of the signal. On the contrary, in the time domain, an overcomplete DAE is adopted to extract the reconstruction error of the signal. Subsequently, normalized damage quantitative indicators are developed in the two domains. The damage localization method is also clarified. The proposed method can extract features directly from original vibration data without the need for additional signal preprocessing techniques. More importantly, the algorithm relies only on the output signals and does not require a numerical or scale model. This framework can be used to identify, locate, and quantify structural damages. The validity of the diagnostic framework is verified using a well-designed laboratory benchmark structure. A large-scale grandstand structure is further used to prove the ability of the proposed method for identifying slight structural damage caused by the loosening of joint bolts. The results clearly demonstrate an elegant performance of the proposed damage detection algorithm in structural condition assessment and damage localization.
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| GB/T 7714 | Jiang, Kejie , Han, Qiang , Du, Xiuli et al. A decentralized unsupervised structural condition diagnosis approach using deep auto-encoders [J]. | COMPUTER-AIDED CIVIL AND INFRASTRUCTURE ENGINEERING , 2021 , 36 (6) : 711-732 . |
| MLA | Jiang, Kejie et al. "A decentralized unsupervised structural condition diagnosis approach using deep auto-encoders" . | COMPUTER-AIDED CIVIL AND INFRASTRUCTURE ENGINEERING 36 . 6 (2021) : 711-732 . |
| APA | Jiang, Kejie , Han, Qiang , Du, Xiuli , Ni, Pinghe . A decentralized unsupervised structural condition diagnosis approach using deep auto-encoders . | COMPUTER-AIDED CIVIL AND INFRASTRUCTURE ENGINEERING , 2021 , 36 (6) , 711-732 . |
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