Article
Engineering, Civil
Ruibin Zhang, Wei Wang, Chengyu Yang, Shuling Hu, M. Shahria Alam
Summary: Beam-through frames (BTFs) are becoming popular in China due to their economic benefits and fast construction. The self-centering rocking core (SRC) is introduced to improve the seismic performance of BTFs. Research shows that the SRC system can achieve the target seismic performance and effectively control deformation patterns under various seismic motions. The stiffness parameters of the SRC device have an influence on the collapse capacity and peak responses of the system.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
Zhenhua Zhang, Yunmin Zhan, Hu Shen, Hui Qian, Piao Sheng
Summary: Research has shown that self-centering energy dissipation dampers (SCEDs) are effective in reducing residual deformation after an earthquake, although their damping ratio is lower compared to conventional dampers. To address this issue, a novel self-centering damper composed of elastic post-buckling plates and adjustable friction devices (PBSCFD) was proposed. The PBSCFD exhibited classic self-centering behavior with low secondary stiffness, providing significant control effects on the base/interstory shear and interstory drift ratio of the considered structure.
Article
Construction & Building Technology
Shuling Hu, Wei Wang, M. Shahria Alam, Bing Qu
Summary: The SEDRC system is a high-performance steel lateral force-resisting system that can achieve negligible residual inter-story drifts, and systematic studies have shown that the designed SEDRC system can meet the performance objectives.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2021)
Article
Construction & Building Technology
Shuling Hu, Wei Wang
Summary: This research focuses on seismic design and performance evaluation of low-rise steel buildings using self-centering energy-absorbing dual rocking core systems. Through physical tests and numerical simulations, it is shown that the SEDRC system performs well in terms of stability and meeting drift limit requirements.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2021)
Article
Engineering, Civil
Shuling Hu, Wei Wang, M. Shahria Alam
Summary: This research presents a novel aseismic system, the hybrid self-centering rocking core (HSRC) system, which has better seismic resilience in steel buildings. The system includes hybrid self-centering dampers to control structural and nonstructural damage, as well as a rocking core with steel braces to facilitate uniform inter-story drift responses and serve as a reserve energy-absorbing mechanism. The designed HSRC systems show desirable nonlinear responses and can effectively control structural and nonstructural damage under earthquakes.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Civil
Wei Wang, Cheng Fang, Deyang Shen, Ruibin Zhang, Jiemin Ding, Honglei Wu
Summary: A novel self-centering bracing system using disc spring-based dampers was proposed in this study, with comprehensive experimental research conducted on six full-scale damper specimens. The study found that the fullness of the flag-shaped hysteresis in the brace is a critical factor affecting key structural performance, and decreasing the energy dissipation factor can eliminate residual deformation at the cost of increased peak deformation and floor acceleration responses.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Civil
Xiangmin Li, Fuwen Zhang, Zhuolin Wang, Kun Tian, Jinzhi Dong, Lu Jiang
Summary: The study introduces an innovative externally-hung rocking wall with shape memory alloy and disc spring self-centering devices for retrofitting existing structures, providing self-centering capability under seismic loads and significantly reducing damage compared to unretrofitted structures.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Civil
Shuling Hu, Wei Wang, M. Shahria Alam, Bing Qu
Summary: This study investigates the use of an Energy-absorbing Rocking Core (ERC) to enhance the seismic performance of Beam-through tension-only concentrically braced frame (BTF) buildings. The ERC consists of a stiff Rocking Core (RC) and either friction spring dampers (FSDs) or buckling-restrained braces (BRBs), which improve the energy absorption capacity of BTFs and control residual drift.
JOURNAL OF EARTHQUAKE ENGINEERING
(2022)
Article
Engineering, Civil
Lei Chen, Dongsheng Wang, Fan Shi, Rui Zhang, Zhiguo Sun
Summary: This paper proposes a new configuration of an all-steel assembly self-centering buckling-restrained brace (FSBRB) by combining a buckling-restrained brace and friction spring. The hysteretic behavior of the FSBRB is studied through low-cycle fatigue tests, and the theoretical model is verified by comparing it with test and simulation results. The test results show that the FSBRB exhibits stable hysteresis performance and the friction spring has significant energy dissipation capacity.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Geological
Shuling Hu, Wei Wang
Summary: The study compared the seismic performance of steel buildings using the SEDRC system, SMABF, and BRBF, through design simulations of different seismic scenarios and conducting nonlinear static, dynamic analyses and Incremental Dynamic Analyses (IDA). The results showed that the SEDRC system has the best collapse-resistant capacity, better control over residual inter-story drift responses compared to BRBF, and a smaller probability of damage states associated with nonstructural components.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2021)
Article
Instruments & Instrumentation
Yifei Shi, Hui Qian, Liping Kang, Zongao Li, Like Xia
Summary: This paper introduces an innovative self-centering buckling-restrained brace (SC-BRB) using shape memory alloy cables and steel BRB, with optimal annealing and training procedures for the SMA cables identified through cyclic testing. Numerical simulations and parametric studies suggest design recommendations for the initial strain and area ratio of pre-tensioned SMA cables to achieve appropriate mechanical performance of the SC-BRB.
SMART MATERIALS AND STRUCTURES
(2021)
Article
Engineering, Civil
Hanheng Wu, Lu Sui, Tianhua Zhou, Ben Huang, Xiaohong Li
Summary: A novel self-centering energy-dissipating wall panel is introduced in the paper, consisting of prefabricated concrete wall panels, PT tendons, and replaceable dampers. Test results indicate that the dampers dissipate energy while the PT tendons provide restoring force, giving the walls a dual capacity of energy dissipation and resilience. Theoretical methods for estimating stiffness and strength parameters of the walls are derived based on the compatibility of force and deformation among the components.
ENGINEERING STRUCTURES
(2021)
Article
Construction & Building Technology
Shuling Hu, Wei Wang, M. Shahria Alam
Summary: This research presents an upgraded strategy for steel moment-resisting frames (SMRFs) by implementing Self-Centering Energy-absorbing Dual Rocking Core (SEDRC) systems, which aims to enhance seismic performance, improve seismic resilience, and prevent inter-story drift concentration. The performance-based design approach is validated through prototype structures and analytical analyses, showing that SEDRC systems can increase stiffness and strength of SMRFs and achieve desired performance objectives.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Engineering, Civil
Yang Lu, Feng Xiong, Jie Zhong
Summary: Self-centering rocking shallow foundations are a potential alternative to conventional foundations, providing a "fixed-base" constraint for superstructures. This paper proposes uniaxial hysteretic rocking spring models to enrich the modeling of rocking-dominated foundation response. Two types of models are developed and examined using practical SSI systems consisting of rigid shear walls or deformable bridge piers on rocking shallow foundations.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Civil
Arman Tatar, Daniel M. M. Dowden
Summary: This article introduces a newly proposed Uplift Friction Damper (UFD) as an alternative to hysteretic dampers installed at the base of CLT rocking walls. The UFDs provide stable energy dissipation and enhanced self-centering capability, and their tunability is investigated through a limited parametric study.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Civil
Shuling Hu, Wei Wang, M. Shahria Alam, Bing Qu
Summary: This study investigates the use of an Energy-absorbing Rocking Core (ERC) to enhance the seismic performance of Beam-through tension-only concentrically braced frame (BTF) buildings. The ERC consists of a stiff Rocking Core (RC) and either friction spring dampers (FSDs) or buckling-restrained braces (BRBs), which improve the energy absorption capacity of BTFs and control residual drift.
JOURNAL OF EARTHQUAKE ENGINEERING
(2022)
Article
Engineering, Civil
Cheng Fang, Yiwei Ping, Yiyi Chen, M. C. H. Yam, Junbai Chen, Wei Wang
Summary: This study introduces a novel hybrid self-centering system that aims to overcome critical shortcomings found in existing solutions. By incorporating shape memory alloy elements and integrated viscoelastic dampers, the system effectively controls peak and residual deformation, as well as floor acceleration. The study also conducts a parametric analysis and provides design recommendations, along with proposing a probability-based residual deformation prediction model.
JOURNAL OF EARTHQUAKE ENGINEERING
(2022)
Article
Engineering, Civil
Shuling Hu, Wei Wang, M. Shahria Alam
Summary: This paper investigates the seismic demand of the SEDRC system under near-fault pulse-like ground motions. The study finds that design hysteretic parameters and ground motion characteristics have a significant influence on the nonlinear displacement ratio of the SEDRC system. The results provide insights for the design of structures under seismic events.
JOURNAL OF EARTHQUAKE ENGINEERING
(2023)
Article
Instruments & Instrumentation
Shuling Hu, Canxing Qiu, Songye Zhu
Summary: A hybrid self-centering braced frame equipped with shape memory alloy-based self-centering braces and viscous dampers is proposed in this paper to achieve enhanced seismic performance. The design parameters of the self-centering braces and viscous dampers are investigated through parametric dynamic analyses, and a prediction model and performance-based design method are developed. The results show that the hybrid self-centering braced frames can achieve the desired performance objective and have smaller base shear demand and floor acceleration responses compared to the frames with self-centering braces only.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Construction & Building Technology
Chunxue Dai, Shuling Hu, Wei Wang
Summary: The self-centering modular panel (SCMP) is a emerging seismic resilient lateral force-resisting system. This paper aims to develop a performance-based design (PBD) method for steel buildings equipped with the SCMPs, which can achieve excellent post-earthquake recoverability by displaying the expected hysteretic behavior and performance under earthquakes.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Civil
Ruibin Zhang, Wei Wang, Chengyu Yang, Shuling Hu, M. Shahria Alam
Summary: Beam-through frames (BTFs) are becoming popular in China due to their economic benefits and fast construction. The self-centering rocking core (SRC) is introduced to improve the seismic performance of BTFs. Research shows that the SRC system can achieve the target seismic performance and effectively control deformation patterns under various seismic motions. The stiffness parameters of the SRC device have an influence on the collapse capacity and peak responses of the system.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
Ke Ke, Yonghui Chen, Xuhong Zhou, Michael C. H. Yam, Shuling Hu
Summary: This paper presents an experimental and numerical study of a novel brace-type hybrid damper enhanced by the friction mechanism. The test results showed multiple yielding stages and dependent hysteretic response curves. The numerical investigation confirmed the energy dissipation mechanism and improvement in energy dissipation capacity and ductility. A theoretical prediction model was also developed to facilitate the practical design of the hybrid damper.
THIN-WALLED STRUCTURES
(2023)
Article
Construction & Building Technology
Shuling Hu, Songye Zhu, Wei Wang
Summary: This paper proposes a machine learning-driven probabilistic residual displacement-based design method for retrofitting steel moment-resisting frames (MRFs) using self-centering braces (SCBs) to improve post-earthquake repairability. The influence of SCB design parameters on peak and residual displacements is investigated, and probabilistic residual displacement prediction models are developed using different machine learning algorithms. The results show that artificial neural network models have the highest accuracy. A software based on the ANN models is developed for predicting peak and residual displacement responses. The proposed design method is applied to a three-story benchmark MRF, and the analysis results confirm its effectiveness. The SCB significantly reduces the residual displacement of the retrofitted MRFs, making them fully recoverable without the need for repair after maximum considered earthquakes.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Shuling Hu, Wei Wang, Jiawen Yu
Summary: This paper proposes an innovative precast exterior wall panel with the damage-control function. The panel demonstrates desired nonlinear behavior and can achieve damage-free performance before bearing action, while showing larger strength and energy-dissipation capacity after that. The experimental results indicate that the proposed panel has sufficient initial stiffness and excellent deformability, which can be adjusted by altering the preload of the bolt and the geometries of the bolt hole.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Civil
Shuling Hu, Songye Zhu
Summary: This paper aims to highlight the benefits of hybrid self-centering braced frames (HSBFs) compared to buckling restrained braced frames (BRBFs) and self-centering braced frames (SCBFs) by investigating earthquake-induced life-cycle costs. The study found that HSBFs outperform BRBFs and SCBFs in reducing seismic losses.
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS
(2023)
Article
Engineering, Civil
Shuling Hu, Ruibin Zhang, Wei Wang
Summary: This study proposes a novel hybrid self-centering dual rocking core system with structural and nonstructural damage control functions, aiming to enhance the seismic resilience of building structures. By introducing rigid rocking cores, viscous dampers, and shear friction spring dampers, the system achieves uniform inter-story drifts, hysteresis energy dissipation, and self-centering capacity. Numerical results demonstrate that the system performs better in controlling floor accelerations and inter-story drifts compared to existing systems.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
Shuling Hu, Wei Wang, Yongchang Lu
Summary: This paper develops probabilistic buckling stress prediction models for steel shear panel dampers using machine learning methods, considering the uncertainties of steel materials and geometries. Nominal buckling stress prediction models are first developed using different machine learning algorithms based on finite element analysis results. The efficiency of the developed models is confirmed, and global sensitivity analysis is conducted to investigate the influence of design parameters on buckling stress. An interactive software named PBSSD is developed for practical application.
ENGINEERING STRUCTURES
(2023)
Article
Construction & Building Technology
Shuling Hu, Wei Wang, M. Shahria Alam, Songye Zhu, Ke Ke
Summary: This research focuses on developing a practical design method using artificial neural network models to control the desired peak inter-story drifts and floor accelerations in low-to mid-rise multi-story hybrid self-centering braced frames (HSBFs) during earthquakes. The designed HSBFs, which utilize shape memory alloy-based braces and viscous dampers, can achieve the prescribed performance objectives and exhibit excellent post-earthquake repairability. The software 'SmartHSBF' has been developed to automatically obtain the design information of the components based on the defined performance objectives.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Shuling Hu, Canxing Qiu, Songye Zhu
Summary: This paper proposes a practical performance-based design strategy for controlling the floor acceleration of self-centering braced frames (SCBFs) by using viscous dampers. The study develops prediction models for the inelastic displacement and acceleration ratios of SCBFs with viscous dampers, and validates the proposed design method through simulation of different buildings. The results demonstrate that viscous dampers can effectively control the floor acceleration of SCBFs and achieve the desired performance level.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Shuling Hu, Xiaoming Lei
Summary: Self-centering systems are innovative mechanisms aimed at improving the earthquake resilience of building structures. This research has developed a framework using machine learning and genetic algorithms to optimize the design of self-centering structures. The study found that partially self-centering behavior provides higher life-cycle benefits compared to fully self-centering behavior.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Civil
Renbing An, Jiacong Yuan, Yi Pan, Duhang Yi
Summary: Traditional timber structures built on sloped land are more susceptible to seismic damage compared to structures built on flat land. The upper portion of the structure is found to be the weak point on sloped land, with potential issues such as tenon failure and column foot sliding.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Elyas Bayat, Federica Tubino
Summary: The current design guidelines for assessing floor vibration performance do not consider the influence of variability in the walking path on the dynamic response of floors. This study investigates the dynamic response of floors under a single pedestrian walking load, taking into account the randomness of the walking path and load. The effectiveness of the current guidelines in predicting floor response is critically assessed.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Gao Ma, Chunxu Hou, Hyeon-Jong Hwang, Linghui Chen, Zhenhao Zhang
Summary: Minimizing earthquake damage and improving repair efficiency are the main principles of resilient structures. This study proposed a repairable column with UHPC segments and replaceable energy dissipaters. The test results showed that the columns with UHPC segments and replaceable dissipaters exhibited high strength, deformation capacity, and energy dissipation.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Kartheek S. M. Sonti, Pavan Kumar Penumakala, Suresh Kumar Reddy Narala, S. Vincent
Summary: In this study, the compressive behavior of alumina hollow particles reinforced aluminum matrix syntactic foams (AMSF) was investigated using analytical, numerical, and experimental methods. The results showed that the FE solver ABAQUS could accurately predict the elastic and elastio-plastic behavior of AMSFs. The study also suggested that FE models have great potential in developing new materials and composites under compression loading.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Zheqi Peng, Xin Wang, Zhishen Wu
Summary: In this study, the statistical modeling of fiber-reinforced polymer (FRP) cables using the classic fiber bundle model is explored. The study considers important features of large-scale multi-tendon FRP cables, such as initial random slack and uneven tensile deformation among tendons. A parametric study and reliability analysis are conducted to predict the load-displacement relation and design thousand-meter-scale FRP cables. The study emphasizes the relation between the reliability index beta of the cable and the safety factor gamma of the FRP material.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Yanchao Shi, Shaozeng Liu, Ye Hu, Zhong-Xian Li, Yang Ding
Summary: This paper introduces a damage assessment method for reinforced concrete (RC) columns under blast loading, using modal parameter measurement as the evaluation index. The validity of the proposed method is validated through numerical and experimental analysis. The results show that this modal-based damage assessment method is applicable for non-destructive evaluation of blast-induced damage of RC columns.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Xiaolin Zou, Maosheng Gong, Zhanxuan Zuo, Qifang Liu
Summary: This paper proposes an efficient framework for assessing the collapse capacity of structures in earthquake engineering. The framework is based on an accurate equivalent single-degree-of-freedom (ESDOF) system, calibrated by a meta-heuristic optimization method. The proposed framework has been validated through case studies, confirming its accuracy and efficiency.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Jie Hu, Weiping Wen, Chenyu Zhang, Changhai Zhai, Shunshun Pei, Zhenghui Wang
Summary: A deep learning-based rapid peak seismic response prediction model is proposed for the most common two-story and three-span subway stations. The model predicts the peak seismic responses of subway stations using a data-driven approach and limited information, achieving good predictive performance and generalization ability, and demonstrating significantly higher computational efficiency compared to numerical simulation methods.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Jin Ho Lee, Jeong-Rae Cho
Summary: A simplified model is proposed to estimate the earthquake responses of a rectangular liquid storage tank considering the fluid-structure interactions. The complex three-dimensional structural behavior of the tank is represented by a combination of fundamental modes of a rectangular-ring-shaped frame structure and a cantilever beam. The system's governing equation is derived, and earthquake responses such as deflection, hydrodynamic pressure, base shear, and overturning moment are obtained from the solution.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
W. J. Lewis, J. M. Russell, T. Q. Li
Summary: The work discusses the key features and advantages of optimal 2-pin arches shaped by statistically prevalent load and constant axial stress. It extends the design space of symmetric arches to cover asymmetric forms and provides minimum values of constant stress for form-finding of such arches made of different materials. The analysis shows that constant stress arches exhibit minimal stress response and have potential implications for sustainability and durability of future infrastructure.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Wen-ming Zhang, Han-xu Zou, Jia-qi Chang, Tian-cheng Liu
Summary: Saddle position is crucial in the construction and control of suspension bridges. This study proposes an analytical approach to estimate the saddle positions in the completed bridge state and discusses the calculation under different definitions. The relationship between the saddle position and the tower's centerline is analyzed, along with the eccentric compression of the tower. The feasibility of the proposed method is verified through a real-life suspension bridge.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Shaise K. John, Alessio Cascardi, Yashida Nadir
Summary: This study experimentally investigated the use of TRM material for reinforcing concrete columns. The results showed that increasing the number of textile layers effectively increased the axial strength. Additionally, the choice of fiber type and hybrid textile configuration also had a significant impact on strength improvement. A new design model that considers the effects of both the confining matrix and textile was proposed.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Chandrashekhar Lakavath, S. Suriya Prakash
Summary: This study experimentally investigated the shear behavior of post-tensioned UHPFRC girders, considering factors such as prestress level, fiber volume fraction, and types of steel fibers. The results showed that increasing prestress and fiber dosage could enhance the ultimate load-carrying capacity of the girders, reduce crack angle, and increase shear cracking load.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Vahid Goodarzimehr, Siamak Talatahari, Saeed Shojaee, Amir H. Gandomi
Summary: In this paper, an Improved Marine Predators Algorithm (IMPA) is proposed for size and shape optimization of truss structures subject to natural frequency constraints. The results indicate that IMPA performs better in solving these nonlinear structural optimization problems compared to other state-of-the-art algorithms.
ENGINEERING STRUCTURES
(2024)
Article
Engineering, Civil
Chun-Xu Qu, Jin-Zhao Jiang, Ting-Hua Yi, Hong-Nan Li
Summary: In this paper, a computer vision-based method is proposed to monitor the deformation and displacement of building structures by obtaining 3D coordinates of surface feature points. The method can acquire a large number of 3D coordinates in a noncontact form, improve the flexibility and density of measurement point layout, and is simple and cost-effective to operate.
ENGINEERING STRUCTURES
(2024)