Earthquake Engineering & Structural Dynamics最新文献

{"title":"Automated Recovery of Permanent Displacement in Near-Fault Ground Motions with Fling-Step Effects","authors":"Zhiwang Chang, Wanheng Li, Katsuichiro Goda, Zhenxu Yan","doi":"10.1002/eqe.70048","DOIUrl":"https://doi.org/10.1002/eqe.70048","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>The fling-step is a result of the permanent tectonic offset of the ground in the near-fault regions of large earthquakes. Ground motions containing the fling typically feature a one-sided pulse in the velocity and a non-zero permanent displacement (PD) at the end of shaking. Generally, the information regarding PD is not available in many worldwide databases due to the presence of various errors, as well as the limitations of current practices in eliminating the errors that are contained in the raw or unprocessed ground motions. The sources of the errors are usually complex and unpredictable, making the work of retrieving PD challenging. To address this issue, an automated baseline correction approach is proposed to recover the PD of interest. Raw ground motions are first assumed as consisting of the low-frequency (LF) and the high-frequency (HF) contents, with the former and the latter containing the PD and the errors, respectively. The LF contents are extracted from the raw motion by using a modified progressive iterative approach, while the HF contents are filtered to remove the error. The corrected ground motions are then obtained by combining the extracted LF and the filtered HF contents. Ninety-eight ground motions are next identified as containing the fling, and used for validation of the proposed approach. It is shown that the obtained PDs agree well with the geodetic data and existing empirical models, demonstrating the desirable performance of the proposed algorithm. Finally, the effects of baseline corrections on the properties of near-fault ground motions are discussed. The proposed approach does not require the selection of any key time instants that have to be specified in previous studies, thereby avoiding the subjectivity and uncertainty involved in performing relevant algorithms. Besides, it enables an objective criterion for characterizing fling-step ground motions, facilitating the quantitative and systematic investigation of PD. Effective correction of raw ground motions recorded in the near-fault areas is crucial for seismological and earthquake engineering in studying slips on the fault plane, assessing the effect of fling on the seismic hazard, and analyzing the seismic response of near-fault or fault-crossing buildings and infrastructure.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Summary</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>An automated approach is proposed for the baseline correction of near-fault ground motions containing fling-step effects.</li>\u0000 \u0000 <li>Permanent displacements resulting from the fling-step effects can be recovered from raw ground motions by using a modified progressive approach.</li>\u0000 \u0000 <li>The derived permanent displacements match reasonably well with the geodeti","PeriodicalId":11390,"journal":{"name":"Earthquake Engineering & Structural Dynamics","volume":"54 14","pages":"3685-3704"},"PeriodicalIF":5.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145271722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wall-to-Floor Connections in a Two-Storey Low-Damage Concrete Wall Test Building","authors":"Qun Yang,&nbsp;Richard S. Henry,&nbsp;Yiqiu Lu,&nbsp;Geoffrey W. Rodgers,&nbsp;Ying Zhou","doi":"10.1002/eqe.70041","DOIUrl":"https://doi.org/10.1002/eqe.70041","url":null,"abstract":"<div>\u0000 \u0000 <p>Prior studies have demonstrated that walls implementing unbonded post-tensioned (PT) tendons can provide an effective solution to achieve a low-damage design objective. The wall-to-floor connection is crucial for the floor to achieve the low-damage performance requirements, and wall-to-floor interaction can also alter the lateral load transfer and overstrength actions that develop in the system. To validate low-damage concepts and connection detailing, a two-storey PT concrete wall building with both flexible and isolated wall-to-floor connection designs was recently subjected to shake-table tests. The design of the flexible connections aimed to transfer lateral loads while accommodating wall uplift with a link slab or composite floor. The isolated connections were designed to decouple the floor from the uplift and rotation of the wall to minimise the damage to the floor while transferring forces in the horizontal direction. The behaviour of these wall-to-floor connections was investigated in this paper with consideration of several performance criteria. Key objectives of this investigation of the two wall-to-floor connections included: (1) summarise the observed performance and damage states; (2) quantify the deformation responses; and (3) investigate the force transfer and acceleration responses. Test results confirmed that both the flexible and isolated connections effectively addressed deformation compatibility in the system. The flexible connection primarily accommodated wall uplift by developing narrow cracks that were distributed within the floor. The isolated connection allowed lateral load transfer without imposing deformations on the floor. The acceleration responses of the two connections exhibited different trends. The integral design of the flexible connection ensured that forces were fully transferred from the wall to the floor with consistent acceleration responses, while the isolated connection partially released the transfer mechanism, with only horizontal and vertical accelerations with low-frequency components transmitted through the connection.</p>\u0000 </div>","PeriodicalId":11390,"journal":{"name":"Earthquake Engineering & Structural Dynamics","volume":"54 14","pages":"3666-3684"},"PeriodicalIF":5.0,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145271773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Time Delay-Induced Dynamics in Real-Time Hybrid Simulation: Spectral Decomposition and Energy-Based Evaluation","authors":"Liang Huang,&nbsp;Zhiwei Tang,&nbsp;Cheng Chen,&nbsp;Tong Guo","doi":"10.1002/eqe.70046","DOIUrl":"https://doi.org/10.1002/eqe.70046","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Real-time hybrid simulation (RTHS) inherently functions as a feedback system with intrinsic time delays, which can be accurately modeled using a delay differential equation (DDE). The presence of time delays introduces infinite-dimensional dynamics, complicating the analysis of associated errors. While time delay represents a key experimental imperfection, its quantitative influence on structural vibration remains insufficiently understood. To address this gap, we propose a spectral decomposition framework for linear RTHS systems. This method decomposes the delay system into a finite set of single-degree-of-freedom (SDOF) systems, enabling systematic analysis of delay-induced effects, including frequency shifts, spurious mode generation, and energy redistribution. We establish explicit relationships linking time delay to substructural partitioning and excitation characteristics. Based on these insights, we propose three error mitigation strategies: (1) minimizing actuator delay, (2) reducing the experimental substructure ratio, and (3) optimizing spectral alignment between external excitation and system response. Additionally, we introduce two energy-based evaluation metrics—with corresponding tolerances—to quantify the influence of time delay on total energy input and the modal concentration of input energy. The effectiveness of the proposed approach is validated through numerical simulations and physical experiments, offering novel insights into RTHS error mechanisms from modal and energetic perspectives.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Summary</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>RTHS can be described as a DDE. This study introduced the spectral decomposition method for projecting the dynamic behavior of DDE to individual modes.</li>\u0000 \u0000 <li>From the mode and energy perspective, this method can evaluate and quantify how the energy input caused by time-delay is distributed between the inherent and the spurious modes of test system.</li>\u0000 \u0000 <li>Three ways are effective for error control: (1) reduce the actuator delay, (2) reduce the ratio of experimental substructure, and (3) coordinate spectrums of external excitation and system response.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":11390,"journal":{"name":"Earthquake Engineering & Structural Dynamics","volume":"54 14","pages":"3651-3665"},"PeriodicalIF":5.0,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145272857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Horizontal Vibration Control Mechanism and Optimization for Pipeline Structures with the Placement Effect of Multi-Cavity Particle Damper","authors":"Jian-yang Xue,&nbsp;Yi-meng Zhao,&nbsp;Bao-shun Wang,&nbsp;Yan-bo Bu,&nbsp;Peng Pan","doi":"10.1002/eqe.70049","DOIUrl":"https://doi.org/10.1002/eqe.70049","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Pipeline vibrations are a major contributor to structural fatigue and leakage incidents, resulting in significant economic losses and environmental hazards. Particle dampers have demonstrated strong effectiveness in suppressing pipeline vibrations. However, existing research on pipeline vibration control has largely overlooked the impact of the placement of particle dampers, limiting their practical engineering applications. To address this challenge, the multi-cavity particle damper (MPD) with high damping effect is taken as the research object. A mechanical model of an MPD-controlled pipeline incorporating placement effects was first developed, alongside an innovative simulation methodology. Subsequently, horizontal vibration control tests were conducted to validate the accuracy of the mechanical model. The effects of MPD parameters and placement on the damping performance were then investigated, and the optimal parameters and placement were obtained. Finally, an optimization design process was proposed for MPD-controlled pipelines under multi-modal broadband excitation. The results indicate that MPDs exhibit a significant damping effect under resonant excitation, achieving a damping rate of up to 97.31%. Additionally, adjusting the placement of MPDs can effectively enhance damping performance under non-resonant excitation. By optimizing MPD parameters and placement under low-order modal broadband excitation, the performance of MPDs under multi-modal broadband excitation can be significantly improved. The proposed optimization design process provides a scientific basis for designing MPD-based vibration control solutions for pipelines operating under complex conditions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Summary</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>\u0000 <p>Proposing a mechanical model of an MPD-controlled pipeline, incorporating the effects of damper placement.</p>\u0000 </li>\u0000 \u0000 <li>\u0000 <p>Validating the significant damping effect of the MPD on multi-order modes of the controlled pipeline.</p>\u0000 </li>\u0000 \u0000 <li>\u0000 <p>Exploring the influence of MPD displacement on its vibration reduction effect.</p>\u0000 </li>\u0000 \u0000 <li>\u0000 <p>Proposing an optimization method for the MPD-controlled pipeline under multi-modal broadband excitation.</p>\u0000 </li>\u0000 \u0000 <li>\u0000 <p>Discussing the vibration control design for the MPD-controlled pipeline.</p>\u0000 </li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":11390,"journal":{"name":"Earthquake Engineering & Structural Dynamics","volume":"54 14","pages":"3630-3650"},"PeriodicalIF":5.0,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145272856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of Minimum Phase Digital FIR Notch Filter for Real-Time Hybrid Simulation","authors":"Minyeop Kim,&nbsp;Chunghyun Lee,&nbsp;Yunbyeong Chae","doi":"10.1002/eqe.70047","DOIUrl":"https://doi.org/10.1002/eqe.70047","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Resonance in actuator dynamics poses critical instability and control challenges, particularly in real-time hybrid simulations (RTHSs). During rapid control, unintended resonance can induce instability, thereby compromising the accuracy of the experimental outcomes. Servo-hydraulic actuators—implemented in RTHS for their robust actuation capabilities—are inherently prone to oscillations resulting from the oil-column compressions, leading to contamination in the measurements with resonant frequencies. Traditionally, mitigating this issue required extensive tuning of control parameters, which demanded significant time and effort. To resolve the above-mentioned control challenges, a novel design method for a minimum phase finite impulse response notch (MPFN) filter is proposed. The performance of the MPFN filter in resonance suppression is thoroughly validated through numerical simulations, RTHS using an electromagnetic linear actuator, and experimental applications with servo-hydraulic actuators. The results demonstrate that the proposed MPFN filter not only eliminates the need for exhaustive control parameter tuning but also enhances experimental performance across all tested conditions, ensuring improved stability and accuracy in a wide range of experimental settings.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Summary</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Development of a minimum phase digital FIR notch (MPFN) filter that can effectively suppress the vibration at the given frequency, while minimizing the time delay.\u0000</li>\u0000 \u0000 <li>Experimental validation of the proposed MPFN filter by conducting RTHS using an electromagnetic linear motor that mimics the oil-column resonance of a typical servo-hydraulic actuator.</li>\u0000 \u0000 <li>Further experimental validation of the proposed MPFN filter by conducting RTHS with a friction pendulum (FP) bearing by using servo-hydraulic actuators.</li>\u0000 \u0000 <li>The MPFN filter was validated to be effective in reducing the oil-column resonance, enhancing the stability and accuracy of RTHS results.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":11390,"journal":{"name":"Earthquake Engineering & Structural Dynamics","volume":"54 14","pages":"3610-3629"},"PeriodicalIF":5.0,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145273082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Time History Iteration Method for Offline Real-Time Hybrid Testing Involving Multiple Experimental Substructures","authors":"Youming Guo,&nbsp;Peng Pan","doi":"10.1002/eqe.70037","DOIUrl":"https://doi.org/10.1002/eqe.70037","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Real-time hybrid testing (RTHT) is an effective approach for obtaining the dynamic response of large and complex structures, but achieving real-time performance is highly challenging. In recent years, an offline RTHT method has been proposed, where the loading of the experimental substructure and the computation of the numerical substructure are performed independently. Compared to conventional online RTHT, offline RTHT demonstrates significant advantages in terms of accuracy, stability, and cost. In the scenarios involving multiple experimental substructures, it can further reduce the cost of the testing system. However, the existing offline RTHT methods are primarily employed in single experimental substructure scenarios and have difficulties being applied in multiple experimental substructure scenarios. In this study, a Time History Iteration (THI) method and an Accelerated Time History Iteration (ATHI) method are proposed for application in offline RTHT involving multiple experimental substructures. System identification and virtual iteration are performed to accelerate the iteration process. The proposed methods are validated through offline RTHTs for a dual-TMD wind resistance problem. The test results demonstrate that the proposed THI method enables the reuse of the same testing equipment and specimen in offline RTHT. Meanwhile, the proposed ATHI method significantly accelerates the convergence process while ensuring stability and accuracy.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Summary</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>Compared to conventional real-time hybrid testing (RTHT), the offline RTHT method can reduce testing costs by lowering hardware and software requirements, particularly in experiments involving multiple experimental substructures.</li>\u0000 \u0000 <li>A Time History Iteration (THI) method is developed to enable the repeated use of testing equipment and specimens, thereby substantially decreasing the complexity and cost of the testing system.</li>\u0000 \u0000 <li>An Accelerated Time History Iteration (ATHI) method is developed to further reduce test cost by system identification and virtual iteration.</li>\u0000 \u0000 <li>The proposed methods are validated through offline RTHTs for a dual-TMD wind resistance problem.</li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":11390,"journal":{"name":"Earthquake Engineering & Structural Dynamics","volume":"54 13","pages":"3475-3493"},"PeriodicalIF":5.0,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145102251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Probabilistic Seismic Performance Assessment of an RC Bridge Considering Corrosion-Affected Bond-Slip and Steel Bar Buckling","authors":"Shaghayegh Abtahi,&nbsp;Yong Li","doi":"10.1002/eqe.70045","DOIUrl":"https://doi.org/10.1002/eqe.70045","url":null,"abstract":"<p>Reinforced concrete (RC) bridges are designed to remain safe and functional for their lifetime, during which the impacts of aging may result in performance degradation. Steel bar corrosion is one of the most common causes of structural performance degradation in RC structures subjected to earthquakes in seismic-prone areas. Therefore, to ensure the adequate seismic performance of RC bridges over the course of their life, it is necessary to investigate the effect of corrosion on seismic performance prediction. To this end, this research work uses the recently developed tools for seismic performance assessment, including advanced finite element (FE) modeling strategies for corroded RC structures. The newly developed advanced FE modeling strategy can capture the corrosion impact on bonding between steel bars and surrounding concrete, as well as the vulnerability of steel bars to buckling, in addition to other effects on the steel bar cross-sectional area, cover concrete spalling, and confinement level for core concrete. Using these newly developed strategies, the seismic performance of an RC bridge, impacted by corrosion over the course of its life, is examined in a probabilistic framework. In particular, it has been demonstrated that the conventional FE modeling approach, which neglects the corrosion-affected bond-slip and steel bar buckling, would lead to underestimated seismic risk for corroded RC bridges, specifically the seismic risk associated with the post-peak behavior.</p>","PeriodicalId":11390,"journal":{"name":"Earthquake Engineering & Structural Dynamics","volume":"54 14","pages":"3594-3609"},"PeriodicalIF":5.0,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eqe.70045","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145272678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New Perspectives in Causal Relationships Between the Response of a Rocking Block and Intensity Measures via Ensemble Machine Learning Methodologies","authors":"Stefan K. W. Chu,&nbsp;Anastasios I. Giouvanidis,&nbsp;Cheng Ning Loong,&nbsp;Elias G. Dimitrakopoulos","doi":"10.1002/eqe.70042","DOIUrl":"https://doi.org/10.1002/eqe.70042","url":null,"abstract":"<p>This paper investigates the ability of machine learning (ML) to characterise the response of rocking structures when subjected to recorded earthquakes. In particular, it uses the structural parameters of a rigid block and strong ground motion characteristics to train two random forest (RF) models. The first model predicts whether a block, given that it initiates rocking motion, overturns or undergoes safe rocking, and identifies the main variables, i.e., structural and ground motion features, that govern such classification. Provided no overturning occurs, the second RF model predicts the peak rocking rotation of a block under ground motion records. Importantly, this study also employs interpretable ML techniques (such as partial dependence plots and SHAP additive explanations) to identify causal relationships between strong ground motion parameters and rocking response. The analysis shows that under high-intensity earthquakes, the peak ground velocity (PGV) governs the overturning of a rocking block. For earthquakes of moderate intensity, overturning becomes a more interactive phenomenon where the PGV, frequency/period and duration characteristics of the seismic signal contribute. Finally, this research shows that high safe rocking amplitude is also interactive, with velocity, displacement, (mean) frequency/period, and duration characteristics of the ground excitation playing a pivotal role.</p>","PeriodicalId":11390,"journal":{"name":"Earthquake Engineering & Structural Dynamics","volume":"54 14","pages":"3576-3593"},"PeriodicalIF":5.0,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eqe.70042","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145272994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Online Cyber-Physical Neural Network Model for Real-Time Hybrid Simulation","authors":"Faisal Nissar Malik,&nbsp;Liang Cao,&nbsp;James Ricles,&nbsp;Austin Downey","doi":"10.1002/eqe.70036","DOIUrl":"https://doi.org/10.1002/eqe.70036","url":null,"abstract":"<p>Real-time hybrid simulation (RTHS) is an experimental testing methodology that divides a structural system into an analytical and an experimental substructure. The analytical substructure is modeled numerically, and the experimental substructure is modeled physically in the laboratory. The two substructures are kinematically linked together at their interface degrees of freedom, and the coupled equations of motion are solved in real-time to obtain the response of the complete system. A key challenge in applying RTHS to large or complex structures is the limited availability of physical devices, which makes it difficult to represent all required experimental components simultaneously. The present study addresses this challenge by introducing Online Cyber-Physical Neural Network (OCP-NN) models–neural network-based models of physical devices that are integrated in real-time with the experimental substructure during an RTHS. The OCP-NN framework leverages real-time data from a single physical device (i.e., the experimental substructure) to replicate its behavior at other locations in the system, thereby significantly reducing the need for multiple physical devices. The proposed method is demonstrated through RTHS of a two-story reinforced concrete frame subjected to seismic excitation and equipped with Banded Rotary Friction Dampers (BRFDs) in each story. BRFDs are challenging to model numerically due to their complex behavior which includes backlash, stick-slip phenomena, and inherent device dynamics. Consequently, BRFDs were selected to demonstrate the proposed framework. In the RTHS, one BRFD is modeled physically by the experimental substructure, while the other is represented by the OCP-NN model. The results indicate that the OCP-NN model can accurately capture the behavior of the device in real-time. This approach offers a practical solution for improving RTHS of complex structural systems with limited experimental resources.</p>","PeriodicalId":11390,"journal":{"name":"Earthquake Engineering & Structural Dynamics","volume":"54 13","pages":"3457-3474"},"PeriodicalIF":5.0,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eqe.70036","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145102318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Special Issue: Large-Scale Testing of Earthquake-Resistant Structures: Accomplishments and Future Challenges","authors":"Dimitrios G. Lignos,&nbsp;Larry A. Fahnestock","doi":"10.1002/eqe.70043","DOIUrl":"https://doi.org/10.1002/eqe.70043","url":null,"abstract":"<div>\u0000 \u0000 <section>\u0000 \u0000 <h3> Summary</h3>\u0000 \u0000 <div>\u0000 <ul>\u0000 \u0000 <li>\u0000 <p>Advanced experimental techniques for dynamic and quasi-static testing</p>\u0000 </li>\u0000 \u0000 <li>\u0000 <p>Quantification of system-level effects via physical experimentation</p>\u0000 </li>\u0000 \u0000 <li>\u0000 <p>Robust identification of dynamic and mechanical properties of structures via state-of-the-art instrumentation</p>\u0000 </li>\u0000 \u0000 <li>\u0000 <p>Techniques for robust data storage and curation that enable data reuse for contemporary research</p>\u0000 </li>\u0000 \u0000 <li>\u0000 <p>Effective use of experimental data and methods for the further advancement of earthquake engineering</p>\u0000 </li>\u0000 </ul>\u0000 </div>\u0000 </section>\u0000 </div>","PeriodicalId":11390,"journal":{"name":"Earthquake Engineering & Structural Dynamics","volume":"54 14","pages":"3515-3518"},"PeriodicalIF":5.0,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145272843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}