Article
Mechanics
Farhad Zeighami, Antonio Palermo, Athanasios Vratsikidis, Zhibao Cheng, Dimitris Pitilakis, Alessandro Marzani
Summary: The study assessed the attenuation performance of a medium-scale resonant wave barrier operating within the frequency range of 50-100 Hz, showing that the local resonant barrier can effectively reduce the surface wave amplitude near the resonant frequency. Multiple-frequency barriers were designed to expand the attenuation frequency band.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2021)
Article
Geosciences, Multidisciplinary
Shuo Zhang, Bingxu Luo, Yehuda Ben-Zion, David E. Lumley, Hejun Zhu
Summary: Continuous seismic ambient noise can be used to monitor the temporal evolution of near-surface seismic velocity, which provides critical information for water resource management and water deficit estimation. The long-term trend of seismic velocity is negatively correlated with groundwater recharge and discharge, while short-term peaks align with drought index, indicating the potential for monitoring meteorological droughts. The seasonal cycle of seismic velocity can be attributed to thermo-elastic strains driven by atmospheric temperature changes.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Construction & Building Technology
Xijuan Shen, Meng Chen, Wei-Ling Hsu, Zuorong Dong, Keran Lan, Haitao Luo, Sean Te-Hsun Lin
Summary: The preservation and restoration of historic sites are essential for preserving a city's historical heritage and promoting high-quality development. However, the management of historic sites is still being explored and improved. The current development and preservation of historic sites face challenges such as fragmented and inadequate preservation. This study proposes an innovative evaluation model based on a multi-criteria decision-making approach to assess the importance of historic sites. The results emphasize the significance of the authenticity and completeness of historic relics in preserving historic sites. The evaluation index system developed in this study can assist urban decision makers in prioritizing preservation and restoration efforts. The empirical case study in Huai'an, China, validates the feasibility of the evaluation index system and provides references for the preservation and restoration of historic sites.
Article
Engineering, Mechanical
Natalia Garcia, Fernando Pena, Marcos M. Chavez
Summary: This study examines the geometric configuration of the conventual temples built by mendicant orders in 16th century Mexico and its correlation with damage caused by the September 19, 2017 earthquake. The research focuses on the convent complexes in Morelos state, where the Franciscan, Dominican, and Augustinian orders constructed their initial architectural works outside of Mexico City.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Engineering, Civil
Wen Zhou, Kaiming Bi, Hong Hao, Thong M. Pham, Wensu Chen
Summary: High-rise buildings can be damaged or collapsed by excessive vibrations during earthquakes. Suppressing seismic-induced vibrations is important for the safety of these structures. Elastic metamaterials can manipulate the propagation of waves and researchers have developed meta-based techniques for structural vibration control. Similarly, floating floor structures have been used to control building vibrations. In this study, a locally resonant meta-basement is proposed to block seismic wave propagation. The formation of the bandgap and the influences of key parameters are examined, and design strategies for reducing seismic wave energy are proposed. Numerical simulations show the effectiveness of the meta-basement in reducing building vibrations.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
Pei Liu, Shuqiang Huang, Mingming Song, Weiguo Yang
Summary: A Bayesian model updating method utilizing ambient vibration data to improve efficiency and avoid local optimums is proposed. The method employs Bayesian fast Fourier transform to extract modal parameters for weighting factors, and uses a subset simulation optimization algorithm to find global optimal solutions. Validation on numerical and real-world structures shows improved accuracy in parameter estimations, demonstrating the effectiveness of the proposed method.
JOURNAL OF CIVIL STRUCTURAL HEALTH MONITORING
(2021)
Article
Engineering, Civil
Pinar Inci, Caglar Goksu, Erkan Tore, Alper Ilki
Summary: The study found that even limited reductions in vibration frequencies could indicate serious problems about structural safety. The decrease of vibration frequencies in the retrofitted building was lower.
JOURNAL OF EARTHQUAKE ENGINEERING
(2022)
Article
Construction & Building Technology
Daniele Sivori, Laura Ierimonti, Ilaria Venanzi, Filippo Ubertini, Serena Cattari
Summary: Recent advancements in computing performance and sensing technology have allowed the development of high-fidelity computational models that accurately replicate the behavior of existing structures. The concept of digital twin (DT), a simulation model continuously updated with sensor data, has been proposed to merge computational modeling and remote monitoring of structures. This paper introduces the integrated use of DTs and vibration data for seismic structural health monitoring of historical palaces, using the Consoli Palace in Gubbio, Italy as a practical application. An efficient equivalent frame (EF) model is proposed to overcome computational limitations and is compared with a high-fidelity Finite Element representation in terms of performance and accuracy. The EF model demonstrates its ability to rapidly assess structural integrity and predict residual capacity in post-earthquake scenarios.
Article
Architecture
Jose M. Jara, Juan Lopez, Bertha A. Olmos, Guillermo Martinez
Summary: The study aims to identify the dynamic properties of masonry historic bridges, characterize bridge pathologies, develop numerical models, identify damage mechanisms, evaluate seismic vulnerability, and conduct ambient vibration tests on five historical bridges.
INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE
(2022)
Article
Geosciences, Multidisciplinary
Franziska Glueer, Mauro Haeusler, Valentin Gischig, Donat Faeh
Summary: Ambient vibration measurements have been used on unstable rock slopes and in this study, were applied for the first time to a rock mass disturbed by subsurface explosions. By analyzing data and calibrating a numerical model, a better understanding of rock mass stability and earthquake risk assessment can be achieved.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Architecture
Riccardo Mario Azzara, Maria Girardi, Valerio Iafolla, David M. Lucchesi, Cristina Padovani, Daniele Pellegrini
Summary: The paper discusses the results of an ambient vibration monitoring campaign conducted on the Clock Tower in Lucca, showing that the recorded vibrations were generally low due to its location in a limited traffic area. Two types of highly sensitive instruments were used for monitoring, providing accurate information on the dynamic behavior of the tower and cross-validation of results.
INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE
(2021)
Article
Engineering, Geological
Harshkumar Kamleshbhai Maheshwari, Prabhu Rajagopal
Summary: This paper proposes a locally resonant Zero-Frequency Stop Band (ZFSB) metamaterial for protection against low-frequency vibrations in the range of 1-10 Hz. Through numerical simulations and laboratory experiments, the effectiveness of the proposed concept in inhibiting wave propagation in the ultra-low frequency range of 0-33 Hz is demonstrated.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Engineering, Civil
Said Dusak, Emine Selcen Cesur, Baris Sayin
Summary: This paper presents a multi-step restoration approach for the historic Gazi Atik Ali Pasa madrasah constructed in 1498. The paper determines the material compositions for rehabilitation and repair through physical and chemical examinations, evaluates the seismic performance of the structure through numerical analyses, and performs protection and repair practices based on the findings. The study contributes to the literature by providing a comprehensive approach for restoring a heritage masonry building with historical importance.
Article
Green & Sustainable Science & Technology
Marzanna Jagiello
Summary: This article reflects on the 40th anniversary of the Florence Charter, discussing its significance for the protection of historic gardens and highlighting some issues. It raises controversies regarding authenticity and source usage, calling for these discussions to be extended to all types of historic green landscapes.
Article
Engineering, Civil
Ahmed Abdelraheem Farghaly, Denise-Penelope N. Kontoni
Summary: High-rise buildings are common structures due to population growth. Lack of land in crowded cities leads to convergence of these buildings, increasing the risk of collision during earthquakes. This research evaluates three vibration control methods and finds that the PTMD method is the most efficient in reducing the risk of collision.
EARTHQUAKES AND STRUCTURES
(2022)