Article
Construction & Building Technology
A. P. Ferreira Pinto, B. Sena da Fonseca, D. Vaz Silva
Summary: This study investigated the mechanical characterization of rubble stone masonry walls in a Portuguese monument, evaluating their quality using various methods such as rebound hammer tests, flat-jack tests, and image processing. The results identified key parameters affecting the mechanical resistance of the walls, including the amount and quality of mortar, shape features of stone units, and horizontal alignment of joints. Good correlations were found between the mechanical properties obtained from different tests, highlighting the benefits of quality assessment in estimating masonry mechanical properties.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Civil
Sebastian Calderon, Cristian Sandoval, Gabriele Milani, Oriol Arnau
Summary: The study assessed the shear strength of partially grouted reinforced masonry (PG-RM) shear walls and found that variations in design parameters can alter crack patterns, axial pre-compression stress and aspect ratio affect the shear strength, and horizontal reinforcement ratio and aspect ratio impact the story-drift ratio at maximum lateral force of the walls.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2021)
Article
Construction & Building Technology
Joao M. Pereira, Antonio A. Correia, Paulo B. Lourenco
Summary: Unreinforced masonry construction is prevalent in urban areas worldwide, making them vulnerable to earthquakes and causing damage to cultural heritage. This study focuses on the in-plane behavior of masonry walls under horizontal loadings to enhance society's ability to preserve and protect cultural heritage.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Civil
Paola Ita, Sandra Santa-Cruz, Dominique Daudon, Nicola Tarque, Anghie Parraga, Vladimir Ramos
Summary: This study evaluates the out-of-plane performance of typical retaining walls in Lima, Peru. The most common types of failure were delamination and overturning. It is concluded that the walls can be improved to some extent with better construction practices, but further research is needed to enhance current practices.
ENGINEERING STRUCTURES
(2023)
Article
Construction & Building Technology
Ibrahim Serkan Misir, Gokhan Yucel, Fikret Kuran, Cansu Beril Eser, Omer Aldemir, Serap Topcu
Summary: This article investigates the weakness of walls in stone masonry buildings, namely the susceptibility to out-of-plane overturning during strong ground motions. Through static and dynamic testing of large-scale masonry wall specimens, the damage limits are determined and suggested for performance-based evaluations of other structures.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Giulio Castori, Marco Corradi, Emanuela Sperazini
Summary: Fiber Reinforced Cementitious Mortars (FRCM) are a new class of reinforcement materials used in conservation engineering. Experimental data from full size testing on 12 wall panels showed that FRCM strengthening of shear walls is effective. Different reinforcement schemes and inorganic matrices were studied, and a two-step nonlinear numerical procedure, calibrated with characterization test data, was implemented to predict the shear behavior of reinforced walls.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Physical
Maria Luisa Beconcini, Pietro Croce, Paolo Formichi, Filippo Landi, Benedetta Puccini
Summary: The evaluation of the shear behavior of masonry walls in seismic zones is crucial, but complex due to the variety of historical masonry types. In situ tests are limited, so reference values from modern structural codes are usually used to characterize shear masonry behavior. A test procedure combining multiple tests has been proposed to assess masonry mechanical parameters, showing promising results in evaluating seismic vulnerability of buildings.
Article
Construction & Building Technology
Amir Rezaie, Michele Godio, Radhakrishna Achanta, Katrin Beyer
Summary: This study aims to use simple machine learning models to predict the degradation of stiffness, strength, and displacement capacity of damaged stone masonry piers, as well as the pre-peak vs. post-peak regime based on crack features. The inclusion of axial load and shear span ratio in the feature vector significantly reduces prediction error. The k-nearest neighbor algorithm and logistic regression show remarkable accuracy in predicting the pre-peak vs. post-peak regime.
AUTOMATION IN CONSTRUCTION
(2022)
Article
Construction & Building Technology
Faris Tresnjo, Mustafa Humo, Filippo Casarin, Naida Ademovic
Summary: This paper presents the seismic assessment of a stone minaret in Mostar, Bosnia and Herzegovina through on-site dynamic investigation. The minaret was dynamically identified and the masonry wall was qualitatively assessed using ambient vibration testing and sonic pulse velocity testing, respectively. Modal analysis and time-history analysis using the Applied Element Method (AEM) were conducted to understand the seismic behavior of the slender tower-like minaret. The concentration of stresses was observed at the transition zones.
Article
Engineering, Civil
Theodore Cross, Flavia De Luca, Raffaele De Risi, Guido Camata, Massimo Petracca
Summary: The seismic risk of a stone masonry template health centre developed by Pahar Trust NGO in Nepal is assessed using the latest probabilistic seismic hazard analysis. Micro-modelling in OpenSees is used to create a high-fidelity model of the health centre and derive fragility curves through cloud analysis. The study contributes to establishing a strategy for defining seismic risk for template designs in regions with highly variable seismic hazard.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Mechanical
Irfan Kocaman, Ilker Kazaz
Summary: This article examines the seismic performance of four historical mosques and determines the damage propagation and collapse mechanisms using nonlinear dynamic analyses. It provides evaluations on mode shapes, maximum principal strains, maximum displacements, damage distributions and failure mechanisms of these mosques.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Engineering, Mechanical
Marco Valente
Summary: The seismic response of two historical masonry churches and their bell towers were investigated using a finite element macro-modelling approach and non-linear dynamic analyses. The study aimed to evaluate the effects of the church walls on the seismic performance and damage patterns of the bell towers, comparing them with isolated configurations. The results showed that both churches were highly vulnerable to low-to-moderate seismic actions, with the bell towers suffering significant damage due to interaction effects with the neighboring church walls.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Construction & Building Technology
A. P. Ferreira Pinto, B. Sena da Fonseca, D. Vaz Silva
Summary: This study focuses on the examination of mortars from historical rubble stone masonry structures, discussing the influence of various factors on mortar properties. The results suggest that mortar quality can be assessed and distinguished based on hardness and drilling strength.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Memduh Karalar, Gulsah Cufali
Summary: This study investigated the effect of arch form variation in thickness and height on a bridge through numerical analysis. A historic bridge, the Antik Iscehisar Bridge, was chosen as the numerical application. Static analysis was conducted to examine the impact of the bridge's own weight and moving load, while dynamic analysis focused on the effect of 10 different historical fault movements. The study determined the areas of principal stress and deformation and presented the results in contour diagrams, tables, and charts. Observation showed that displacements decreased with increasing arch thickness under the bridge's own weight and under the influence of live loads and earthquakes. The study also performed a seismic reliability assessment to determine if reinforcement interventions were necessary for the bridge's security.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Mechanical
Irfan Kocaman
Summary: This article examines the seismic performance of historical Molla Siyah Mosques and investigates how the concrete vault cover applied to the mosque affects its seismic behavior. Nonlinear dynamic analyses were performed using ground motion records from previous earthquakes. The study highlights the significant impact of reinforcements on the seismic behavior of historical structures.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Mechanics
Shenghan Zhang, Seyedeh Mohadeseh Taheri Mousavi, Nicolas Richart, Jean-Francois Molinari, Katrin Beyer
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2017)
Article
Construction & Building Technology
Shenghan Zhang, Martin Hofmann, Katrin Beyer
CONSTRUCTION AND BUILDING MATERIALS
(2018)
Article
Construction & Building Technology
Shenghan Zhang, Nicolas Richart, Katrin Beyer
MATERIALS AND STRUCTURES
(2018)
Article
Mathematics, Applied
Jianbing Chen, Shenghan Zhang
SIAM JOURNAL ON SCIENTIFIC COMPUTING
(2013)
Article
Engineering, Civil
Michele Godio, Francesco Vanin, Shenghan Zhang, Katrin Beyer
ENGINEERING STRUCTURES
(2019)
Article
Construction & Building Technology
Shenghan Zhang, Han Liu, Abdoul Aziz Sandotin Coulibaly, Matthew DeJong
Summary: Distributed fiber optic sensing (DFOS), particularly Optical Frequency Domain Reflectometry (OFDR), is increasingly utilized in civil engineering due to its higher accuracy and resolution. Experimental studies have shown that different types of optical fiber embedded in concrete and rebar can affect the measured strain response significantly, with higher performing fibers offering unprecedented detail and potential for application in RC structures. Recommendations for cables with different size and structure are provided based on the findings.
STRUCTURAL CONTROL & HEALTH MONITORING
(2021)
Article
Engineering, Multidisciplinary
Shenghan Zhang, Han Liu, Jeffrey Cheng, Matthew J. DeJong
Summary: This article focuses on the application of distributed fiber optic (strain) sensing technology in civil engineering, developing a mechanical model to explain fiber deformation and validating it with experiments. The study extends the model to simulate the effects of multiple cracks on fiber optic strain measurement and proposes an algorithm for distinguishing multiple cracks.
STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL
(2021)
Article
Engineering, Civil
Peter G. Hubbard, James Xu, Shenghan Zhang, Matthew Dejong, Linqing Luo, Kenichi Soga, Carlo Papa, Christian Zulberti, Demetrio Malara, Fabio Fugazzotto, Francisco Garcia Lopez, Chris Minto
Summary: The study evaluates two Rayleigh-based distributed fiber optic sensing technologies for monitoring the dynamic structural behavior of wind turbine towers. The phi-OTDR technology shows promise in detecting structural issues within towers due to its longer sensing distance capability compared to OFDR. This study demonstrates the first use of phi-OTDR for structural health monitoring in wind turbine towers.
JOURNAL OF CIVIL STRUCTURAL HEALTH MONITORING
(2021)
Article
Construction & Building Technology
Han Liu, Shenghan Zhang, Abdoul A. S. Coulibaly, Jeffrey Cheng, Matthew J. DeJong
Summary: This study conducted tests on six types of fiber-optic cables with different structures, sensitivity, and survivability to investigate the effectiveness of using OFDR strain sensing to evaluate concrete cracking behavior and steel reinforcing bar deformation. The results show that OFDR strain sensing, combined with new data processing methods, can detect microcracking and provide reliable crack width measurements.
JOURNAL OF STRUCTURAL ENGINEERING
(2021)
Article
Energy & Fuels
Tsubasa Sasaki, Shenghan Zhang, Kenichi Soga, Linqing Luo, Barry Freifeld, Yoki Kitayama, Kyojiro Kawaguchi, Hitoshi Sugiyama
Summary: This study investigates bending deformation of a mockup of an oil/gas well under reservoir compaction and assesses the feasibility of using distributed fiber optic strain sensing. Results show that tight-buffered cables are best suited for strain sensing, with significant improvement in performance compared to conventional sensors. Overall, this research highlights the importance of accurate strain sensing for well integrity in oil and gas wells.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2021)
Article
Chemistry, Analytical
Shenghan Zhang, Han Liu, Esam Darwish, Khalid M. Mosalam, Matthew J. DeJong
Summary: This study investigates the capability and potential of OFDR technology in measuring distributed strain in RC structures through laboratory tests, quantifying the performance and limitations of the DFOS system under large cyclic strains, proposing structural damage indices based on the DFOS results, and verifying the potential of using DFOS for RC structural damage assessment.
Article
Chemistry, Analytical
Shenghan Zhang, Han Liu, Sanjay Govindjee, Matthew J. DeJong
Summary: Understanding the strain transfer mechanism is crucial for interpreting strain sensing results for fiber optic cables. This study investigates the strain transfer mechanism for different types of fiber optic cables embedded in concrete cubes, and proposes a parameter to quantify the strain transfer length. The results of this study will guide the selection of appropriate cables for strain sensing and the interpretation of fiber optic sensing results.
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)
