Article
Engineering, Geological
Xu Chen, Jianfeng Xiong
Summary: An improved base isolation device, named FPB-VD, is proposed for seismic resilient design of structures. The device is efficient in reducing both the structural acceleration and deformation demands compared to conventional approaches. It also suppresses the dispersion caused by randomness and input motion types, improving the predictability of structural performance.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Engineering, Mechanical
Linfei Hao, Hui He, Ping Tan, Kiwoong Jin, Xinyu Liu
Summary: This study investigates the damping enhancement and optimal design of inerter-based dampers (IBDs), focusing on the equivalent damping ratio supplied by the tuned inerter damper (TID). Two closed-form solutions for optimal parameters are developed to achieve the best control performance and highest damping enhancement effect. The proposed methods are verified through time history analysis and compared with conventional optimization approaches. The results show that the proposed method achieves similar control performance but better damping enhancement effect, especially when the TID is installed in the story with the largest interstory drift.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Civil
S. Fatemeh Labbafi, Ahmad Shooshtari, Ehsan Mohtashami
Summary: This paper investigates the performance of a new type of tuned mass damper, the friction tuned mass damper (FTMD), in reducing the seismic response of a four-span integral bridge. Numerical results show that the FTMD outperforms the traditional tuned mass damper (TMD) in decreasing the displacement of the bridge deck. However, higher earthquake intensity significantly undermines the performance of both dampers.
Article
Construction & Building Technology
Yuan Tian, Kaiqi Lin, Lei Zhang, Xinzheng Lu, Hongjing Xue
Summary: The study proposes a novel seismic-progressive collapse resilient super-tall building system and design method, which significantly reduces the consequences and recovery time after accidents and earthquakes.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Construction & Building Technology
Zoran Rakicevic, Aleksandra Bogdanovic, Ehsan Noroozinejad Farsangi, Abbas Sivandi-Pour
Summary: The study conducted comprehensive biaxial shake table tests on a novel structural vibration control system, demonstrating its high effectiveness and ability to improve the seismic performance of buildings during earthquakes. Incremental dynamic analysis (IDA) also showed that the proposed system has a higher collapse margin ratio (CMR) compared to conventional fixed-base frames.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Engineering, Civil
Congru Yin, Tiange Song, Xiaobin Song, Xianglin Gu, Xuwen Xiao
Summary: This study aims to investigate the seismic performance of indoor RC substations with combined base isolation technique under far-field earthquakes and near-fault earthquakes. A 1/4 scaled three-story RC frame model was prepared for shaking table tests, considering three different model configurations: non-isolated model, mono-isolated model, and combined isolated model. The results showed that the lead rubber bearings (LRBs) effectively reduced the seismic responses under far-field earthquakes, but were less effective under near-fault earthquakes. The combination of LRBs and viscous dampers (VDs) effectively reduced the seismic responses under near-fault earthquakes, improving the torsional behavior and reducing the displacement ratio.
ENGINEERING STRUCTURES
(2023)
Article
Construction & Building Technology
Salah Djerouni, Said Elias, Mahdi Abdeddaim, Rajesh Rupakhety
Summary: This study investigates the efficiency of tuned inerter dampers (TIDs) in controlling the seismic response and pounding distance between two adjacent buildings. Through numerical examples and testing with various ground motions, the proposed solution is found to be more effective and superior to existing TID configurations.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Geological
Xiuyan Hu, Zhipeng Zhao, Ruifu Zhang, Kai Yang, Qingjun Chen, Dagen Weng
Summary: This study proposes a negative stiffness-assisted hybrid isolation system and earthquake-resilient design methodology to upgrade the multi-performances of adjacent non-coaxial buildings and linking corridors. The developed system and design methodology show advantages in solving the torsion effect and seismic-induced damage in non-coaxial adjacent buildings.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Engineering, Geological
Zhaoyu Huo, Hu Ding, Zhan Shu
Summary: This paper studied the dynamic characteristics of the tuned inerter eddy current damper (TIECD) and investigated its optimal design considering the nonlinear behavior of the eddy current damping (ECD). The relationship between the nonlinear parameters of the ECD and its equivalent damping coefficient was revealed using the energy equivalent linearization method. Optimal design formulae for a TIECD were derived. The comparisons showed that the proposed solutions offered an ideal estimation for the TIECD optimal design parameters of a lightly damped structure. In contrast with the linear tuned viscous mass damper (TVMD), the nonlinear TIECD achieved better control performances.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Construction & Building Technology
Yongkui Wen, Fernando Gomez, Dexin Li, Billie F. Spencer
Summary: Optimized designs of tuned inerter dampers have been investigated for controlling structures with multiple degrees of freedom. The study focused on the importance of inertance and its effect on multiple TID designs, demonstrating enhanced performance by optimizing inertance through global optimization.
STRUCTURAL CONTROL & HEALTH MONITORING
(2022)
Review
Chemistry, Multidisciplinary
Bhre Wangsa Lenggana, Ubaidillah Ubaidillah, Fitrian Imaduddin, Seung-Bok Choi, Yusep Muslih Purwana, Harjana Harjana
Summary: This study investigates the efficacy of using magnetorheological (MR) dampers as semi-active damping devices in building structures to mitigate earthquake damage. Research findings suggest that MR dampers, with their semi-active system, can effectively reduce the impact of earthquakes on building structures.
APPLIED SCIENCES-BASEL
(2021)
Article
Construction & Building Technology
Jing Bian, Xuhong Zhou, Ke Ke, Michael C. H. Yam, Yuhang Wang
Summary: The based-isolation with tuned mass damper inerter (BI-TMDI) is used to improve the seismic response of steel High-voltage substation switches mounted on frame (SMF). An analytical model with three degree-of-freedom is explored for optimization and seismic design. The displacement variance of the SMFBI-TMDI system is obtained using statistical Cauchy's residue theorem and a comprehensive parametric analysis is performed. The proposed analytical model is validated through time history response analysis and shows improved accuracy compared to conventional models. This innovative control method and optimization analysis in BI-TMDI highlight its potential for enhanced vibration control in steel substations under earthquake motions.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Construction & Building Technology
Qigang Liang, Luyu Li, Qitao Yang
Summary: This study investigates the seismic control of the MSSS using tuned inerter damper (TID) and compares it with other control strategies. The effectiveness of the TID is verified through analysis of a multistorey MSSS, showing its performance is better than viscous damper (VD) and tuned mass damper (TMD) within the recommended working scope.
STRUCTURAL CONTROL & HEALTH MONITORING
(2021)
Article
Engineering, Civil
Zhipeng Zhai, Yanhui Liu, Wei Guo, Oya Mercan, Huating Chen, Fulin Zhou
Summary: Current design methods for seismic resilience only consider typical earthquake scenarios and do not account for the risk of extremely rare earthquakes. This paper proposes a new design method that incorporates two-level yielding dampers to enhance the resilience of structures against rare earthquakes. Numerical analysis confirms the effectiveness of the proposed method.
ENGINEERING STRUCTURES
(2023)
Review
Engineering, Civil
Gang Xu, Tong Guo, Aiqun Li, Shiyuan Wang, Ruijun Zhang, Ruizhao Zhu, Jun Xu
Summary: In recent years, major earthquakes in China, Chile, New Zealand and Japan have caused severe damage to building structures, requiring repairs or rebuilding. The use of energy dissipation dampers has been proposed as a way to improve seismic resilience. However, traditional dampers have the disadvantage of not automatically returning to their original position after an earthquake, resulting in residual deformation and economic losses. To address this, researchers have proposed combining self-centering devices with traditional dampers to achieve both energy dissipation and self-centering capacity, effectively preventing post-earthquake damage. This paper reviews traditional dampers, self-centering dampers, experimental research, seismic design methods, and engineering applications, highlighting the importance and future research directions for self-centering dampers.
Article
Engineering, Civil
D. Losanno, D. De Domenico, I. E. Madera-Sierra
Summary: This study investigated the performance of fiber reinforced elastomeric isolators and found them to be more effective in certain aspects compared to traditional steel reinforced elastomeric isolators, with higher damping capacity. The study also revealed the mechanical behavior of FREIs under different loading conditions and significant rollover phenomenon under lateral loading.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Mechanical
Dario De Domenico, Giuseppe Quaranta, Giuseppe Ricciardi, Walter Lacarbonara
Summary: This study investigates the optimum design of a tuned mass damper with pinched hysteresis (TMD-PH) for seismic protection. A stochastic based optimum design methodology is proposed, which considers the effects of the protected system characteristics and seismic ground motion duration. The performance of the optimized TMD-PH is evaluated using synthetic and natural seismic ground motion records.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Chemistry, Physical
Luis F. A. Bernardo, Mafalda M. Teixeira, Dario De Domenico, Jorge M. R. Gama
Summary: This study presents a review and comparative analysis of different design codes for predicting the torsional strength of reinforced concrete members. It proposes a refined yet simple equation to accurately predict torsional strength, which shows significant improvement over the reference design codes.
Article
Engineering, Geological
Qinhua Wang, Zhiyuan Zheng, Haoshuai Qiao, Dario De Domenico
Summary: This study proposes a multi viscous inerter dampers (MVIDs) system to control the transverse seismic vibrations of reinforced concrete (RC) continuous girder bridges located in earthquake-prone areas. Numerical analysis demonstrates that the MVIDs system can effectively reduce the relative displacement and maximum displacement and acceleration responses between the girder and piers. The results show that the MVIDs system has a better seismic control effect compared to the traditional multi viscous dampers (MVDs) system, and its control effects are more sensitive to the damping ratio.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Construction & Building Technology
Dario De Domenico, Davide Messina, Antonino Recupero
Summary: Reinforced concrete structures in aggressive environments, like bridge piers near the sea experiencing chloride attacks, may have increased seismic vulnerability. A phenomenological model is developed to describe the seismic behavior of corroded RC elements, taking into account the mechanical degradation of concrete and steel caused by corrosion. The model is validated and then used for the seismic vulnerability assessment of a specific bridge in Italy, where the RC bridge piers are exposed to carbonation and chloride-induced corrosion. The proposed approach is computationally efficient and applicable to other existing RC bridges in corrosive environments.
STRUCTURAL CONCRETE
(2023)
Article
Engineering, Civil
Salah Djerouni, Said Elias, Mahdi Abdeddaim, Dario De Domenico
Summary: In this paper, three novel configurations using passive devices (TMDI and TID) are proposed for pounding mitigation in buildings subjected to ground motion excitation. The optimum parameters of the devices are determined using a particle swarm optimization algorithm. The proposed configurations outperform the existing configuration in the literature, as demonstrated by a large set of ground motion records.
PRACTICE PERIODICAL ON STRUCTURAL DESIGN AND CONSTRUCTION
(2023)
Article
Engineering, Civil
Matteo Mazzeo, Dario De Domenico, Giuseppe Quaranta, Roberta Santoro
Summary: Free vibration tests are used to characterize the dynamic behavior of structural systems and components. In road bridge monitoring, these tests require minimal equipment to quickly and cost-effectively gather essential information about the structure's dynamic behavior. The resulting experimental free-vibration response is processed to estimate structural modal features, which can be used to validate numerical models and evaluate bridge conditions.
ENGINEERING STRUCTURES
(2023)
Article
Construction & Building Technology
Haoshuai Qiao, Peng Huang, Dario De Domenico, Qinhua Wang
Summary: In this paper, the application of inverter-based vibration absorbers (IVAs) in the vibration control of multi-degree-of-freedom (MDOF) structures is studied. The Sherman-Morrison inversion (SMI) method is used to calculate the frequency response functions (FRFs) of IVA-controlled structures. Design strategies for targeted modal control using multiple IVAs are proposed and validated in wind-resistance and seismic design. The results show that modal interaction effects are increasingly important for the design of (M)IVAs with larger inertance or tuned to higher modes.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Ali Majdi, Ataallah Sadeghi-Movahhed, Mohammadreza Mashayekhi, Saeid Zardari, Omrane Benjeddou, Dario De Domenico
Summary: The aim of this study is to investigate the performance of isolated structures under severe earthquakes considering the possibility of impact. Dampers are used to improve the performance of structural and nonstructural components. The placement of dampers has a significant influence on the performance of the structures.
Article
Chemistry, Multidisciplinary
Dario De Domenico, Emanuele Gandelli, Alberto Gioitta
Summary: This paper investigates the seismic response and recentering behavior of reinforced concrete frames through numerical analysis. Three synthetic behavioral indexes are used to describe the behavior, and a fiber-hinge formulation and versatile pivot hysteresis model are implemented to capture inelastic behavior and pinching effects. Practical design abacuses are constructed to describe the trends of the behavioral indexes based on a parametric study of 80 RC frame scenarios.
APPLIED SCIENCES-BASEL
(2023)
Article
Construction & Building Technology
Haoshuai Qiao, Peng Huang, Dario De Domenico
Summary: This study proposes an automatic design approach for passive vibration control devices, optimizing both parameters and topology. The design problem is transformed into a constrained multi-objective optimization problem, and a two-level evolutionary algorithm is used to optimize topology and parameters separately. Compared to traditional control devices, the automatically-designed control devices outperform in terms of response reduction and robustness in two different cases.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Dario De Domenico, Davide Messina, Antonino Recupero
Summary: In this study, an easy-to-use phenomenological model is developed to describe the seismic behavior of corroded reinforced concrete (RC) elements. By validating the model through experimental tests and conducting numerical analyses, the seismic vulnerability of RC bridges in corrosive environments is assessed.
STRUCTURAL CONCRETE
(2023)
Proceedings Paper
Engineering, Civil
Matteo Mazzeo, Dario De Domenico, Giuseppe Quaranta, Roberta Santoro
Summary: Damping is an important structural property that influences the behavior and health condition of dynamical systems, but its estimation is often affected by uncertainties. This contribution presents a novel approach that utilizes the Variational Mode Decomposition (VMD) technique to identify modal damping ratios from free vibration tests. The approach extracts the time history response of each mode and uses the relationships among the areas formed by the free-decay time-domain response to estimate the damping ratios. The proposed strategy has been shown to be efficient and suitable for practical applications.
EUROPEAN WORKSHOP ON STRUCTURAL HEALTH MONITORING (EWSHM 2022), VOL 3
(2023)
Proceedings Paper
Materials Science, Multidisciplinary
Tiago Ribeiro, Luis Bernardo, Ricardo Carrazedo, Dario De Domenico
Summary: This research simplifies Eurocode 3 design criteria into geometric constraints and optimizes the topology of a landmark moment connection using the Solid Isotropic Material with Penalisation (SIMP) method. It has been found that topology optimization can significantly reduce the weight of structural steel connections while meeting design standards requirements.
MATERIALS TODAY-PROCEEDINGS
(2022)
Article
Construction & Building Technology
Tiago Ribeiro, Luis Bernardo, Ricardo Carrazedo, Dario De Domenico
Summary: The importance of connections in steel structures is crucial for construction cost and global structural behavior. Research on innovative connections for seismic applications has grown, but there is still limited investigation on system analysis and code compliance levels. This systematic review covers recent research and identifies current shortcomings, highlighting the need for updated design rules and further investigations in specific areas.
Article
Engineering, Geological
Shaohui Liu, Lizhong Jiang, Wangbao Zhou, Jian Yu
Summary: This study evaluates the post-earthquake damage to track-bridge systems by conducting nonlinear time history analysis on a CRTS II ballastless track simply-supported beam system subjected to transverse earthquake loading. It explores the characteristics of residual displacement and stiffness degradation of the track-bridge system under transverse earthquakes. The research investigates the effect of earthquake-induced stiffness degradation on high-speed trains and proposes a reconstruction method for earthquake-induced dynamic irregularity characteristic curve considering probability guarantee rates. The results indicate that earthquake-induced dynamic irregularity can effectively quantify the running performance of high-speed trains under earthquake-induced stiffness degradation conditions.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Rui Zhang, Xiangqian Sheng, Wenliang Fan
Summary: This study introduces a novel approach for the probabilistic assessment of seismic earth pressure against nonlinear backfills. Nonlinear upper bound analysis is used to obtain the seismic earth pressure through optimization procedure, and probability analysis of nonlinear backfill properties is considered by combining adaptive dimension decomposition with the direct integral method.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Qiangqiang Sun, Yu Xue, Menghao Hou
Summary: This study investigated the use of Tire-derived aggregate (TDA) as backfill material for geotechnical seismic isolation in utility tunnels. Nonlinear numerical analyses were conducted, and the results showed that TDA backfill was an excellent alternative for risk mitigation during strong earthquakes, significantly reducing deformation and forces. The proposed system could potentially save costs compared to expensive seismic mitigation measures.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Yan-Guo Zhou, Dong-Chao Zhang, Kai Liu, Yun-Min Chen
Summary: This study investigated the large deformations caused by liquefaction in sloping ground and the methods for evaluation and mitigation. Soil element tests and centrifuge model tests were conducted to study the relationship between residual strain and Post-liquefaction Deformation Potential (PLDP). The tests showed that the developments of residual strain were controlled by PLDP, which is correlated with the maximum cyclic shear strain. The applicability of PLDP was verified in model tests, and the mitigation mechanisms of densification and drainage induced by stone columns were observed.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Jiajin Zhao, Zhehao Zhu, Dexuan Zhang, Hao Wang, Xi Li
Summary: This paper studies the fabric properties during sand liquefaction using 3D constant-volume cyclic triaxial DEM tests. The results show good consistency with experimental data. The evolution of fabric characteristics is assessed using the coordination number and mechanical coordination number. The second-order contact normal fabric tensor is introduced to analyze complex inter-particle contacts and the shear strain is used as a bridge to describe the evolution of coordination number and anisotropy degree.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Jinqiang Li, Zilan Zhong, Shurui Wang, Kaiming Bi, Hong Hao
Summary: The corrosion-protection liner technology improves the seismic performance of water supply pipelines and reduces the failure probability under earthquake excitations.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Abdellah Cherif Taiba, Youcef Mahmoudi, Mostefa Belkhatir
Summary: This article provides a comprehensive analysis of Liu et al.'s (2023) published paper in the Soil Dynamics and Earthquake Engineering journal, which examines the impact of particle shape on the wave velocity of sand. By enhancing the content integrity, this article serves as a valuable discussion piece for readers interested in this research topic.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Weijian Zhong, Binbin Li, Yanhui Liu, Ping Tan, Fulin Zhou
Summary: In this paper, the Flexible Limit Protective Device (FLPD) was improved to a Flexible Energy Dissipating Device (FEDD) to better control the seismic response of base-isolated structures. Experimental investigation and numerical simulation were conducted to study the compression behavior and optimize the design of FEDDs. The results showed that FEDDs with optimal parameters effectively reduced isolator displacements and kept the inter-story drift angle within a safe range during earthquakes.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Xinhua Xue, Xiaojie Yuan, Li Tao
Summary: In this study, gene expression programming (GEP) was used to establish the relationship between the capacity energy required to trigger sand liquefaction and several major parameters. The GEP model showed higher accuracy and better performance compared to existing models, as confirmed by experimental data.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Xiao-ling Zhang, Hao Lan, Xian-hui Zhao, Cheng-shun Xu, Ke-min Jia
Summary: The study investigates the reinforcement principle of inclined liquefiable site using concrete pile and gravel pile methods. The results show that concrete piles have a better reinforcement effect on inclined liquefiable site compared to gravel piles, and increasing the diameter of gravel piles greatly improves the reinforcement effect. The pile group reinforcement model is more effective in reducing lateral displacement of the site soil compared to the single pile reinforcement model.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Jinxin Sun, Haoyu Sun, Mengmeng Lu, Bolin Han
Summary: The implementation of stone columns is an effective way to improve the stability of liquefiable soil. However, existing mathematical models often neglect vertical seepage within the soil, leading to calculation errors. This study proposes a new mathematical model that considers both radial and vertical seepage, and conducts a parameter analysis to investigate the effects of column spacing, cyclic stress ratio, and consolidation parameters on excess pore water pressure.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Jonathan F. Hubler, James P. Hanley, Andrew C. Stolte, Liam Wotherspoon, Kyle M. Rollins
Summary: This study performed blast liquefaction tests in an area that experienced extensive liquefaction. It used multi-channel analysis of surface waves (MASW) testing to evaluate changes in shear wave velocity (VS) before and after blasting. The study found that array length has an impact on the immediate changes in VS following blasting, but these changes decrease at 24 hours post-blast.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Lowell Tan Cabangon, Gaetano Elia, Mohamed Rouainia, Suraparb Keawsawasvong, Teraphan Ornthammarath
Summary: The impact of far-field earthquakes on underground structures, especially tunnels, has been relatively less explored compared to near-field earthquakes. However, the study found that far-field earthquakes can generate forces in tunnel lining that are equally destructive as those induced by near-field motions, especially when they contain long-period waves. The amplification of these ground motions in soft natural clays, common in Bangkok, can lead to significant soil displacements and shear strains.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Jinjun Hu, Longbing Ding, Xutong Zhou, Mingji Liu, Jingyang Tan
Summary: Offshore near-fault ground motions during the 2016 OffMie Mw6.0 earthquake in the Nankai Trough of Japan were studied using data from the DONET1 seafloor seismic network. The results show that offshore spectral acceleration and peak ground velocity are higher than onshore values. Analysis of pulse-like ground motions reveals differences in amplitude, frequency content, and energy between offshore and onshore motions. These findings have implications for seismic design of offshore engineering structures.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Radu Popescu, Pradipta Chakrabortty
Summary: The natural spatial variability of soil properties affects the mechanical response of geotechnical structures and can deviate failure surfaces. For soil liquefaction induced by seismic activity, it has been found that greater excess pore water pressure is generated in soils with small-scale variability. This paper provides an explanation based on centrifuge experiments and numerical simulations, showing that partial drainage during earthquakes may trigger softening of dilative soils.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
