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学者姓名：韩强
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摘要 ：
To improve shear capacity, as well as reduce on-site casting and steel consumption, a novel Y-shaped perfobond rib (Y-PBL) shear connector with ultra-high-performance concrete (UHPC) grout was proposed. The shear behavior of the Y-PBL shear connector was investigated by six groups of pushout specimens. Their failure modes, load-slip curves, load-separation curves, strain analysis, and shear transfer mechanisms were discussed. Subsequently, finite-element analysis (FEA) models were established to study the effect of parameters on the shear behavior of the Y-PBL shear connector, as well as to compare the shear capacity contributions with straight-shaped PBL (S-PBL) shear connectors. Analytical models were proposed to predict the shear capacity of the Y-PBL shear connector. The results reveal that the proposed Y-PBL shear connector has superior shear capacity and stiffness. The contribution of the perforating rebar is minor compared with the end-bearing effect of UHPC. The analytical predictions agree well with the experimental and FEA results. This study can be used to guide the design and application of the Y-PBL shear connector in steel-concrete composite bridges.
关键词 ：
Ultra-high-performance concrete (UHPC) Ultra-high-performance concrete (UHPC) Perfobond rib shear connector Perfobond rib shear connector Analytical model Analytical model Shear behavior Shear behavior Shear transfer mechanism Shear transfer mechanism
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| GB/T 7714 | Ni, Yulong , Hu, Menghan , Jia, Zhenlei et al. Shear Behavior of Y-Shaped Perfobond Rib Shear Connector with UHPC Grout [J]. | JOURNAL OF STRUCTURAL ENGINEERING , 2024 , 150 (9) . |
| MLA | Ni, Yulong et al. "Shear Behavior of Y-Shaped Perfobond Rib Shear Connector with UHPC Grout" . | JOURNAL OF STRUCTURAL ENGINEERING 150 . 9 (2024) . |
| APA | Ni, Yulong , Hu, Menghan , Jia, Zhenlei , Han, Qiang . Shear Behavior of Y-Shaped Perfobond Rib Shear Connector with UHPC Grout . | JOURNAL OF STRUCTURAL ENGINEERING , 2024 , 150 (9) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
As critical lifeline systems, transportation network (TN) and electric power network (EPN) are highly susceptible to natural hazards, such as earthquakes during their service life. At the same time, restoration of damaged TN and EPN is essential to support the post-earthquake reconstruction and emergency rescue in affected areas. Restoration strategies were traditionally developed for TN or EPN separately. However, neglecting the potential interconnection between these two networks in the recovery phase may lead to detrimental consequences, as in real-world scenarios, the obtained strategy may be less efficient or even unfeasible given that recovery of one system is usually dependent on the others for service provision. Accordingly, this paper presents a resilience-based framework for post-earthquake restoration of interdependent transportation-electric power networks. In this framework, restoration independencies and functionality dependencies are introduced to represent the interaction between TN and EPN. Then, a bi-level optimization model with the objective of maximizing seismic resilience is established to characterize the network recovery problem. Furthermore, a solution algorithm that incorporates a genetic algorithm and a chromosome validity test operator is designed to obtain the near-optimal solution. Finally, the proposed framework is illustrated through two numerical examples.
关键词 ：
restoration scheduling restoration scheduling Decision optimization Decision optimization electric power network electric power network transportation network transportation network seismic resilience seismic resilience
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| GB/T 7714 | Zhang, Wangxin , Han, Qiang , Dong, Huihui et al. Resilience-based post-earthquake restoration scheduling for urban interdependent transportation-electric power network [J]. | STRUCTURE AND INFRASTRUCTURE ENGINEERING , 2024 . |
| MLA | Zhang, Wangxin et al. "Resilience-based post-earthquake restoration scheduling for urban interdependent transportation-electric power network" . | STRUCTURE AND INFRASTRUCTURE ENGINEERING (2024) . |
| APA | Zhang, Wangxin , Han, Qiang , Dong, Huihui , Wen, Jianian , Xu, Chengshun . Resilience-based post-earthquake restoration scheduling for urban interdependent transportation-electric power network . | STRUCTURE AND INFRASTRUCTURE ENGINEERING , 2024 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Reinforced concrete (RC) single-column piers (SCPs) and double-column piers (DCPs) are widely used in highway girder bridges. However, the seismic behavior of conventional RC DCPs has not received sufficient attention. This study aimed to investigate the seismic behavior of DCPs, especially the comparison of the failure mechanism, hysteretic behavior, and dynamic response between SCPs and DCPs. To this end, the critical performance parameters between SCPs and DCPs in the elastic phase were first calculated according to the simplified calculation formulas. Eight 1/3 scaled SCPs and DCPs were then fabricated and tested under quasi-static cyclic loading, and the effective height of the DCPs was twice that of the SCPs. The test results showed that the failure modes and damage mechanisms between the SCPs and DCPs are obviously different. In particular, the plastic damage states at the top and bottom of each column in the DCP were asymmetric, and this behavior was also observed on both sides of each plastic hinge region. Subsequently, the relationship between the performance parameters of SCP and DCP in the plastic phase differed from that of the elastic phase and was not proportional. Existing formulas for calculating the plastic hinge length of SCPs cannot effectively predict DCPs and may even underestimate it. Furthermore, numerical simulations were analyzed to investigate the effects of various design parameters and ground motions on the seismic behavior of the SCPs and DCPs.
关键词 ：
Plastic hinge length Plastic hinge length Quasi-static cyclic loading tests Quasi-static cyclic loading tests Hysteresis behavior Hysteresis behavior Reinforced concrete (RC) double-column piers Reinforced concrete (RC) double-column piers RC single-column piers RC single-column piers Failure mechanism Failure mechanism
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| GB/T 7714 | Dong, Huihui , Feng, Wenhao , Zheng, Zicheng et al. Experimental Investigation on Failure Mechanism and Hysteresis Behavior of RC Single- and Double-Column Piers [J]. | JOURNAL OF BRIDGE ENGINEERING , 2024 , 29 (12) . |
| MLA | Dong, Huihui et al. "Experimental Investigation on Failure Mechanism and Hysteresis Behavior of RC Single- and Double-Column Piers" . | JOURNAL OF BRIDGE ENGINEERING 29 . 12 (2024) . |
| APA | Dong, Huihui , Feng, Wenhao , Zheng, Zicheng , Han, Qiang , Du, Xiuli . Experimental Investigation on Failure Mechanism and Hysteresis Behavior of RC Single- and Double-Column Piers . | JOURNAL OF BRIDGE ENGINEERING , 2024 , 29 (12) . |
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摘要 ：
The ageing effect in the life-cycle assessment should be considered for the high-strength steel structures constructed in corrosive environments and high-seismicity zones. Additionally, the structures can suffer multidimensional seismic excitations because of the spatial effect of ground motions. Therefore, this study aims to investigate the impact of different loading protocols on the mechanical properties of Q690 steel columns with Hsection during the whole life-cycle. Firstly, numerical methods considering time-varying corrosion process are used to simulate the ageing steel columns. After that, the nonlinear hysteretic behaviors of the ageing steel columns under different loading protocols are investigated. The factor of resistance degradation (the degree of degradation of ultimate resistance) is employed to quantify the effect of loading protocols on ageing steel columns. Finally, the biaxial ultimate interaction curve considering the ageing effect and a practical design process are proposed. The findings demonstrate that the steel columns exhibit different mechanical properties under various loading protocols, and the coupling direction of bi-directional displacement loads influences the degree of degradation of ultimate resistance. As service time increases, the factor of resistance degradation of steel columns gradually reduces by up to 40%. The proposed biaxial ultimate interaction curve has acceptable accuracy. These findings emphasize the importance of employing the unfavorable loading protocols in conducting the seismic design of the steel columns in different life-cycle stages.
关键词 ：
Life-cycle stages Life-cycle stages Loading paths Loading paths Seismic performance Seismic performance Bi-directional cyclic loading Bi-directional cyclic loading Ageing effect Ageing effect H-section columns H-section columns Corrosion Corrosion
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| GB/T 7714 | Zhang, Qiang , Han, Qiang , Wen, Jianian . Life-cycle seismic performance of Q690 steel columns with H-section under various bi-directional cyclic loading paths [J]. | ENGINEERING STRUCTURES , 2024 , 306 . |
| MLA | Zhang, Qiang et al. "Life-cycle seismic performance of Q690 steel columns with H-section under various bi-directional cyclic loading paths" . | ENGINEERING STRUCTURES 306 (2024) . |
| APA | Zhang, Qiang , Han, Qiang , Wen, Jianian . Life-cycle seismic performance of Q690 steel columns with H-section under various bi-directional cyclic loading paths . | ENGINEERING STRUCTURES , 2024 , 306 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Connections between prefabricated concrete panels (PCPs) are susceptible to cracking and damage, attracting the attention of bridge engineers. Curved bolt connections have ideal flexural performance when they have an appropriate anchorage distance. High-performance materials, such as ultrahigh-performance concrete (UHPC) and carbon fiber-reinforced polymer (CFRP) bars, bring solutions to further reduce construction resources on-site and improve the durability and mechanical properties of curved bolt connections. In this paper, curved bolt connections with UHPC grout and CFRP tendons (UHPC-CFRP connections) for PCPs were proposed. Prediction models for the flexural capacity, cracking moment, and deflection of UHPC-CFRP connections were proposed. Full-scale flexural tests were carried out to study their working mechanism, and their flexural performances were compared with those of ordinary curved bolt connections. Three-dimensional finite-element numerical models were developed, and the influences of important design factors on flexural capacity were discussed. Both experimental and numerical results showed that the flexural behavior of the PCPs with UHPC-CFRP connections is more desirable than that of curved bolt connections with ordinary materials. The improved models are effective for predicting the flexural response of PCPs with UHPC-CFRP connections.
关键词 ：
Prefabricated concrete panels (PCPs) Prefabricated concrete panels (PCPs) Flexural performance prediction Flexural performance prediction Curved carbon fiber-reinforced polymer (CFRP) Curved carbon fiber-reinforced polymer (CFRP) Curved bolt connections Curved bolt connections Ultrahigh-performance concrete (UHPC) Ultrahigh-performance concrete (UHPC)
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| GB/T 7714 | Hu, Menghan , Jia, Zhenlei , Ni, Yulong et al. Flexural Behavior and Model of Curved Bolt Connections with UHPC Grout and CFRP Tendons for Prefabricated Concrete Panels [J]. | JOURNAL OF BRIDGE ENGINEERING , 2024 , 29 (5) . |
| MLA | Hu, Menghan et al. "Flexural Behavior and Model of Curved Bolt Connections with UHPC Grout and CFRP Tendons for Prefabricated Concrete Panels" . | JOURNAL OF BRIDGE ENGINEERING 29 . 5 (2024) . |
| APA | Hu, Menghan , Jia, Zhenlei , Ni, Yulong , Han, Qiang . Flexural Behavior and Model of Curved Bolt Connections with UHPC Grout and CFRP Tendons for Prefabricated Concrete Panels . | JOURNAL OF BRIDGE ENGINEERING , 2024 , 29 (5) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
This paper aimed to propose an analytical framework for assessing the postearthquake traffic flow capacity of girder bridges based on the loss model of vertical load-carrying capacity. For this purpose, a loss model of the vertical load-carrying capacity of a reinforced concrete (RC) column associated with the residual drift ratio and the damage level (i.e., the modified Park-Ang index) was developed to determine the postearthquake vertical load-carrying capacity accurately and quantitatively. Subsequently, the probability seismic demand analysis (PSDA) was performed to obtain the probability distribution functions (PDFs) of engineering demand parameters (EDPs) (i.e., the residual drift and the damage indicator) and the PDF of postearthquake vertical load-carrying capacity was determined based on the developed loss model. Furthermore, the reliability analysis was utilized to calculate the postearthquake reliability index of a bridge by adjusting the mean values of the live load (which reflects the traffic flow capacity), and the postearthquake traffic flow capacity could then be quantitatively determined based on the live load ratio at a target reliability index. Finally, the proposed framework was implemented on a single-column bridge to demonstrate its efficiency. Compared to traditional qualitative and subjective postearthquake functionality assessment of the damaged bridge, the proposed analytical approach offered a mathematical model for the decision-making process.
关键词 ：
Residual drift ratio Residual drift ratio Postearthquake traffic flow capacity of bridges Postearthquake traffic flow capacity of bridges Reliability indicator Reliability indicator Damage level Damage level Assessment framework Assessment framework Loss model of the vertical load-carrying capacity Loss model of the vertical load-carrying capacity
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| GB/T 7714 | Dong, Huihui , Ma, Rui , Han, Qiang et al. Quantitative Assessment Framework for the Postearthquake Traffic Flow Capacity of Bridges Based on the Loss Model of Vertical Load-Carrying Capacity [J]. | JOURNAL OF BRIDGE ENGINEERING , 2024 , 29 (3) . |
| MLA | Dong, Huihui et al. "Quantitative Assessment Framework for the Postearthquake Traffic Flow Capacity of Bridges Based on the Loss Model of Vertical Load-Carrying Capacity" . | JOURNAL OF BRIDGE ENGINEERING 29 . 3 (2024) . |
| APA | Dong, Huihui , Ma, Rui , Han, Qiang , Du, Xiuli . Quantitative Assessment Framework for the Postearthquake Traffic Flow Capacity of Bridges Based on the Loss Model of Vertical Load-Carrying Capacity . | JOURNAL OF BRIDGE ENGINEERING , 2024 , 29 (3) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Accurate identification of impact loads is vital for structural assessment and design. Traditional methods rely on complex equipment, such as accelerometers or strain gauge, which can be expensive and prone to failure. This study introduces a non-contact intelligent identification approach incorporating visual sensing technology, providing a convenient means to identify impact loads. Numerical simulations explore the differences in identifying impact forces through acceleration and displacement responses, particularly by considering such variables as measurement noise and number of measurement points. A meticulously designed experiment verified the feasibility of the proposed method for measuring the displacement and velocity of rapidly moving targets, and evaluated its performance in terms of accuracy. A series of impact loading experiments were conducted on a simply supported girder bridge model to validate the effectiveness of the proposed impact force identification method. Results indicate strong agreement between displacement response measurements and percentile meters. The proposed non-contact method accurately identifies single or continuous impact loads, with a minimum peak relative error of 0.2%. This study represents a pioneering application of intelligent visual sensing technology in the field of impact load identification. Moreover, the current research introduces a novel approach to address the challenges faced by conventional methods in identifying impact loads. Future research can leverage the groundwork laid by this study to further optimize and expand the proposed method, enhancing its capabilities and fully harnessing its potential to offer advanced solutions in structural health monitoring.
关键词 ：
intelligent visual perception intelligent visual perception bridge impact loads bridge impact loads Structural health monitoring Structural health monitoring Tikhonov regularization Tikhonov regularization dynamic load identification dynamic load identification
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| GB/T 7714 | Zhang, Shengfei , Ni, Pinghe , Wen, Jianian et al. Non-contact impact load identification based on intelligent visual sensing technology [J]. | STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL , 2024 , 23 (6) : 3525-3544 . |
| MLA | Zhang, Shengfei et al. "Non-contact impact load identification based on intelligent visual sensing technology" . | STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL 23 . 6 (2024) : 3525-3544 . |
| APA | Zhang, Shengfei , Ni, Pinghe , Wen, Jianian , Han, Qiang , Du, Xiuli , Xu, Kun . Non-contact impact load identification based on intelligent visual sensing technology . | STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL , 2024 , 23 (6) , 3525-3544 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Sliding bearings are a key component of bridges, and their normal performance is an important prerequisite to ensure traffic safety. To solve the problem wherein a single type of sensor has difficulty in effectively predicting the wear life of sliding bearings, this paper proposes a method to predict the sliding bearing wear life using the multitype monitoring data of the bridge. This method uses the vertical acceleration data of the girder with high sampling frequency to calculate the bearing cumulative dynamic displacement under vehicle load and then processes the data collected by the longitudinal displacement gauge with low sampling frequency to extract the bearing cumulative static displacement under the effect of temperature. Next, the daily bearing cumulative displacement calculated by adding them is taken as the evaluation index, and the sliding bearing wear life is predicted based on the reliability analysis. Finally, the proposed method is verified by a numerical example of vehicle-bridge interaction and real bridge monitoring data. The obtained results show that the proposed method can be used to estimate the bearing cumulative displacement with high accuracy and can effectively predict the wear life of sliding bearings. The prediction results can provide an important reference for bridge evaluation.
关键词 ：
Bridge bearing Bridge bearing Bridge health monitoring Bridge health monitoring Acceleration response Acceleration response Wear life prediction Wear life prediction Bearing cumulative displacement Bearing cumulative displacement
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| GB/T 7714 | Wei, Yun-Tao , Yi, Ting-Hua , Yang, Dong-Hui et al. Wear Life Prediction of Sliding Bearings Based on Multitype Monitoring Data of Bridges [J]. | JOURNAL OF BRIDGE ENGINEERING , 2024 , 29 (1) . |
| MLA | Wei, Yun-Tao et al. "Wear Life Prediction of Sliding Bearings Based on Multitype Monitoring Data of Bridges" . | JOURNAL OF BRIDGE ENGINEERING 29 . 1 (2024) . |
| APA | Wei, Yun-Tao , Yi, Ting-Hua , Yang, Dong-Hui , Li, Chong , Han, Qiang . Wear Life Prediction of Sliding Bearings Based on Multitype Monitoring Data of Bridges . | JOURNAL OF BRIDGE ENGINEERING , 2024 , 29 (1) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
The socket connection method is widely used in precast column, particularly in seismic regions. However, reducing the socket-depth to lower costs may lead to shear failure in the socketed part of the columns. To address this issue and achieve cost objectives, a new approach combines shallow sockets with corrugated pipes for column-footing joints. Comparative tests were conducted to investigate failure in columns with socketcorrugated pipe connections (SCPC), shallow sockets (SSC), and cast-in-place (CIP). Furthermore, finite element models were employed to validate the experimental and simplified model results. The findings suggest potential shear failure in shallow socket connections, which can be mitigated by using the combined socketcorrugated pipe method that alters force transmission paths. As the axial load ratio increases, both the ultimate lateral load capacity of the specimen and the local stresses at the column base increase. In addition, the ultimate lateral load capacity of the column and the stress of the connection reinforcement are increased by increasing the strength of the longitudinal reinforcement, consequently amplifying the extent of joint area damage. Finally, a simplified strut-and-tie model of the SCPC, validated against numerical and experimental data, accurately represents force paths, ultimate lateral load capacity and failure modes in socket joints.
关键词 ：
Socket-corrugated pipe combination Socket-corrugated pipe combination Prefabricated assembly column Prefabricated assembly column Strut-and-tie model Strut-and-tie model connection connection Force transmission path Force transmission path Numerical analysis Numerical analysis
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| GB/T 7714 | Si, Xiaolong , Song, Yanchen , Zhang, Guangda et al. Mechanical model analysis of column-footing joints with combined socket-corrugated pipe connection [J]. | COMPOSITE STRUCTURES , 2024 , 352 . |
| MLA | Si, Xiaolong et al. "Mechanical model analysis of column-footing joints with combined socket-corrugated pipe connection" . | COMPOSITE STRUCTURES 352 (2024) . |
| APA | Si, Xiaolong , Song, Yanchen , Zhang, Guangda , Han, Qiang , Du, Xiuli , Liu, Bin . Mechanical model analysis of column-footing joints with combined socket-corrugated pipe connection . | COMPOSITE STRUCTURES , 2024 , 352 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Shape memory alloy (SMA) as a high-performance material with intelligent properties, has been recognized as a promising alternative solution for achieving self-centering of the structure. In this study, based on the excellent characteristics of SMA, SMA L-shaped plate was developed and applied to install on the rocking interface of the rocking column to enhance the seismic resilience, and the seismic performance of the self-centering rocking columns with SMA L-shaped plates was investigated through experiment and numerical simulation. To this end, the mechanical properties of SMA plate were firstly investigated experimentally. Then the quasi-static cyclic loading tests of the rocking column with SMA L-shaped plates were carried out, and its hysteresis behavior was investigated under different loading protocols with varying displacement amplitudes. For comparison, a rocking column with steel L-shaped plates was also tested. The experimental results showed that the rocking column with SMA L-shaped plates exhibited excellent flag-shape hysteresis behavior with satisfactory self-centering ability and stable energy dissipation capacity, and owned a large deformation capacity. Subsequently, the dynamic responses of the self-centering rocking column with SMA L-shaped plates were investigated by numerical simulation. It is found that compared to the steel L-shaped plates, the SMA L-shaped plates can effectively reduce the residual displacement responses of the rocking column and quickly restore to normal operation.
关键词 ：
Seismic performance Seismic performance Self-centering rocking columns Self-centering rocking columns SMA L-shaped plates SMA L-shaped plates Quasi-static cyclic loading tests Quasi-static cyclic loading tests Shape memory alloy (SMA) Shape memory alloy (SMA)
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| GB/T 7714 | Jia, Xianzhuo , Dong, Huihui , Su, Can et al. Seismic performance of the self-centering rocking columns with SMA L-shaped plates [J]. | STRUCTURES , 2024 , 60 . |
| MLA | Jia, Xianzhuo et al. "Seismic performance of the self-centering rocking columns with SMA L-shaped plates" . | STRUCTURES 60 (2024) . |
| APA | Jia, Xianzhuo , Dong, Huihui , Su, Can , Han, Qiang . Seismic performance of the self-centering rocking columns with SMA L-shaped plates . | STRUCTURES , 2024 , 60 . |
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