Article
Engineering, Civil
Roger Ortega, Pedro Torres, Peter Thomson, Johannio Marulanda, Gilberto Areiza
Summary: In recent years, the reinforced concrete wall buildings of the industrialized system widely used in Colombia for housing construction have become a research subject due to their specific characteristics. This article presents the results of five quasi-static cyclical tests on thin-reinforced concrete walls (TRCW) that are representative of the industrialized system. The experimental results confirm the importance of web reinforcement properties, amount, and the use of properly confined boundary elements.
ENGINEERING STRUCTURES
(2023)
Article
Chemistry, Multidisciplinary
Abubakar Sharif Auwalu, Norhazilan Md Noor, Mohamad Shazwan Ahmad Shah, Sarehati Umar, Mugahed Amran, Musa Adamu, Nikolai Ivanovich Vatin, Roman Fediuk
Summary: This study investigates the performance of steel-bolt-connected industrialized building system (IBS) frames subjected to the sudden impact of hydrodynamic force. The results demonstrate that the bolt connections are highly effective and robust in the IBS frame, preventing damage from spreading to other structural components.
APPLIED SCIENCES-BASEL
(2022)
Article
Construction & Building Technology
Tan Wang, Xianqian Ma, Ruinian Jiang, Lijun Dou, Jun Liu, Yinlong Hao, Liwei Li, Zhijie Zhou, Yibo Cao, Haibin Ma
Summary: It is necessary to study the seismic performance of widely-used assembled buildings repaired with different approaches in order to quickly strengthen and repair earthquake-damaged buildings and restore normal life. Two different methods, including replacing damaged concrete with high-strength grout and using grout jacketing with reinforcement implantation and reinforcing mesh, are designed to repair seismically damaged shear walls assembled with grouted sleeves. The test results show that both repair methods can restore the load-bearing capacity of the assembled shear walls.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Engineering, Civil
Kaan Yunkul, Ayhan Gurbuz
Summary: This study investigated the seismic performances of gravity retaining walls with inclined back side and inclined backfill through a series of shaking table tests on a physical model with a height of 750 mm. The impact of input peak ground acceleration (PGA), inclination angle of backfill material (alpha), and inclination angle of back of the gravity retaining wall (beta) on various factors such as acceleration amplification factor (RMSA), maximum peak lateral relative displacement (Smaxpeak(rel)), maximum residual lateral displacement (Smax(res)), surface settlement of the backfill material (Sset), inertial force (PI), and horizontal dynamic active force (Pdynh) were assessed. The results showed that the experimental RMSA values were higher compared to the current seismic design codes. Moreover, there was a phase difference observed between the inertial force and dynamic earth pressures. Pseudo-static limit equilibrium methods yielded over-conservative Pdynh results and failed to accurately reflect the seismic behavior of gravity walls.
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS
(2023)
Article
Engineering, Multidisciplinary
Al-hussein M. H. Al-Aidrous, Nasir Shafiq, Yani Rahmawati, Bashar S. Mohammed, Yasser Yahya Al-Ashmori, Abdullah O. Baarimah, Aawag Mohsen Alawag
Summary: Developing countries like Malaysia face barriers in implementing IBS due to factors such as financial concerns, ineffective policies, technical and management worries, traditional stakeholders' concerns, design restrictions, and negative perception. The study recommends adopting innovative standardized design concepts and increasing IBS manufacturers nationwide.
AIN SHAMS ENGINEERING JOURNAL
(2023)
Article
Engineering, Civil
Hamood Alwashali, Masaki Maeda, Yoshihiro Ogata, Naoyuki Aizawa, Kazuya Tsurugai
Summary: This study investigates the influence of pre-damage levels on the residual seismic capacity of reinforced concrete walls, finding that there was no significant deterioration in ultimate strength and maximum deformation capacity due to slight to severe previous damage. The research highlights the importance of assessing the performance of damaged buildings after earthquakes to ensure their safety in future seismic events.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Civil
Song Hu, Li Zhou, Yong Huang
Summary: In this study, an innovative method to improve the shear capacity and seismic performance of cold-formed thin-walled steel (CFS) walls is presented. By filling the CFS walls with phosphogypsum (PG), called phosphogypsum-filled cold-formed thin-walled steel (PFCFS) composite wall, the performance of the traditional CFS walls can be enhanced. The study investigates the impact of axial compression ratio, PG strength, and steel tube's wall thickness on the seismic performance and proposes analytical models and calculation formulas for predicting the shear capacities of the PFCFS walls.
THIN-WALLED STRUCTURES
(2023)
Article
Mechanics
Guanqi Lan, Tianya Wang, Yihong Wang, Kun Zhang
Summary: This study proposes a novel interlocking compressed-earth block (ICEB) composite wall, which is composed of stabilized interlocking compressed-earth blocks, reinforced concrete core columns, structural columns, and lateral strengthening strips. Through low-frequency cyclic loading tests, the effects of different structural measures on the seismic performance of composite walls are investigated, and the failure mode, hysteretic behavior, stiffness degradation, ductility, and energy dissipation ability of the walls are obtained and analyzed. Based on the analysis of test curves, characteristic envelope curves model, calculation method of loading and unloading stiffness, and hysteretic trends are established, and a trilinear restoring force model suitable for the wall is obtained.
COMPOSITE STRUCTURES
(2023)
Article
Construction & Building Technology
Larisa Garcia-Ramonda, Luca Pela, Pere Roca, Guido Camata
Summary: Recent research has shown that Steel Reinforced Grout (SRG) is an excellent solution for strengthening masonry structures. The use of SRG with limited fabric density ensures a good textile-matrix interlocking, preventing failure due to slippage or debonding.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Civil
Marios Mavros, Marios Panagiotou, Ioannis Koutromanos, Rodolfo Alvarez, Jose Restrepo
Summary: This paper investigates the lateral load-displacement behavior and failure modes of a modern 14-story reinforced concrete core wall building using computational simulation. The study highlights the advantages of the beam-truss model (BTM) in seismic analysis.
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS
(2022)
Article
Construction & Building Technology
Xiuhua Zhang, Guoshuai Ren, Enyuan Zhang
Summary: The seismic performance of the cold-formed thin-walled steel-straw board composite wall was investigated through cyclic loading tests. The addition of steel plates improved the shear capacity and lateral stiffness of the composite wall. Walls with internally placed steel plates showed better performance than those with externally placed steel plates. Double-sided steel plates resulted in higher shear capacity compared to single-sided steel plates, and increasing the steel plate thickness improved the bearing capacity and lateral stiffness.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Giulia Cere, Yacine Rezgui, Wanqing Zhao, Ioan Petri
Summary: This research presents a risk-based approach to assess the risk of buildings under seismic conditions by optimizing the layout and thickness of specified shear walls, validated on a building in Beichuan, China. The methodology, validated on a building in Beichuan, China, demonstrates a reduction in risk and additional benefits.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Ya-Chao Tang, Hong-Nan Li, Chao Li
Summary: This paper numerically investigates the influences of axial load ratio and various reinforcement ratios on the mechanical behavior of precast braced concrete shear walls. The effects of bracing ratio and horizontal web ratio on the hysteretic responses are negligible, while the axial load ratio, boundary column ratio, and vertical web ratio significantly affect the lateral bearing capacity and displacement ductility of the walls. The research provides an in-depth understanding of the seismic behavior of these walls and promotes the design code expansion and potential engineering application of such new types of shear walls.
JOURNAL OF STRUCTURAL ENGINEERING
(2023)
Article
Construction & Building Technology
Bin Wang, Meng-Zhen Wu, Qing-Xuan Shi, Wen-Zhe Cai
Summary: This study investigated the influence of biaxial coupling effect on the seismic behavior of flanged reinforced concrete walls. Experimental tests and numerical simulations were conducted, and it was found that biaxial loading intensified cracking and damage, reduced bearing and deformation capacities, accelerated energy dissipation, and increased shear lag effect. Additionally, the reduction in seismic performance due to biaxial coupling effect was more significant for L-shaped walls compared to T-shaped walls.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Civil
Xavier Estrella, Pablo Guindos, Jose Luis Almazan, Sardar Malek, Hernan Santa Maria, Jairo Montano, Sebastian Berwart
Summary: The study proposed new seismic performance factors to reduce design restrictions on wood frame buildings, enhancing competitiveness and cost-effectiveness. The new factors ensured buildings could withstand highly recurring seismic events with neglectable structural and non-structural damage.
ENGINEERING STRUCTURES
(2021)
Article
Construction & Building Technology
Carlos Riascos, Semion Klopov, Daniele Losanno, Johannio Marulanda, Peter Thomson
Summary: This paper investigates the role of rocking effects in the representation of isolated structures through real-time hybrid simulations (RTHS). The results show that when rocking is not considered, the base displacement and interstory drifts can be underestimated by over 50%. A comparison with shaking table tests (STTs) shows a maximum error of less than 8% in peak and root-mean-square values of displacement and force.
STRUCTURAL CONTROL & HEALTH MONITORING
(2022)
Article
Astronomy & Astrophysics
Santiago Ruiz, Alejandro Cruz, Daniel Gomez, Shirley J. Dyke, Julio Ramirez
Summary: This paper presents a preliminary seismic hazard assessment for shallow moonquakes using the Probabilistic Seismic Hazard Analysis (PSHA) methodology. The study identifies the seismic source and evaluates the hazard in terms of peak ground acceleration (PGA) and spectral acceleration (5% damped pseudo-acceleration, PSA). The results provide insights into the seismic risk and can guide the seismic design of lunar structures.
Article
Engineering, Civil
L. F. Ortega, M. Z. Herazo, A. R. Ortiz, P. Thomson, J. Marulanda
Summary: Seismic isolators are passive control devices that reduce the energy transferred from an earthquake to the building. This paper presents a cost-effective method for seismic force mitigation in low-rise buildings using unbonded fiber-reinforced elastomeric isolators. The prototypes showed good behavior in shear and compression tests, meeting the standards and design requirements.
ENGINEERING STRUCTURES
(2023)
Article
Geochemistry & Geophysics
Sebastian Arango-Serna, Leonardo Gallo, Jose H. Zambrano, Alejandro Cruz, Eimar Sandoval, Peter Thomson
Summary: The east of Cali is made up of loose sand deposits with high water table levels, resulting in cyclic liquefaction being a major hazard in the city. To study liquefiable soils under local seismogenic conditions, a seismic monitoring center was designed and implemented. The center has been built in two stages, with the first stage already operational and able to record earthquakes and verify the saturation of the potentially liquefiable layer. Ground motion sensors in the future will further enhance the understanding of shear strains and excess pore pressures in the soil deposit.
JOURNAL OF SEISMOLOGY
(2023)
Article
Construction & Building Technology
Lizette Tello-Cifuentes, Johannio Marulanda, Peter Thomson
Summary: This paper presents a methodology for the detection of damages in pavement using pattern recognition and image analysis with machine learning algorithms. The methodology includes image acquisition, processing with wavelet scattering transform, feature extraction using fractal dimension, and classification. Results showed high accuracy in detecting three common types of damages using Artificial Neural Networks and Support Vector Machine.
ROAD MATERIALS AND PAVEMENT DESIGN
(2023)
Article
Construction & Building Technology
Sebastian Castellanos-Toro, Angelica M. Panesso, Johannio Marulanda, Albert R. Ortiz, Alejandro Cruz, Peter Thomson
Summary: This paper investigates the impact of damage on the flexural performance indicators and dynamic characteristics of post-tensioned concrete beams through static and vibration tests. The study evaluates the performance of these elements based on static data, energy calculations, and ACI 437 recommendations. The results demonstrate the relationship between flexural performance, presence of damage, and natural frequencies.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Civil
Roger Ortega, Pedro Torres, Peter Thomson, Johannio Marulanda, Gilberto Areiza
Summary: In recent years, the reinforced concrete wall buildings of the industrialized system widely used in Colombia for housing construction have become a research subject due to their specific characteristics. This article presents the results of five quasi-static cyclical tests on thin-reinforced concrete walls (TRCW) that are representative of the industrialized system. The experimental results confirm the importance of web reinforcement properties, amount, and the use of properly confined boundary elements.
ENGINEERING STRUCTURES
(2023)
