Results 41 to 50 of about 31,884 (231)

Instability mechanism and failure characteristics of underground cavern in block system under the action of seismic waves

Deep Underground Science and Engineering, EarlyView.
Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang, Jinxiao Liu, Gaoshuo Zhang, Wenxin Li, Changdi He   +4 more
wiley   +1 more source

Contributions of E-Defense Shaking Table to Earthquake Engineering and its Future

Journal of Disaster Research, 2022
A shaking table is an experimental facility consisting of a table that loads a structural specimen and actuators that produce acceleration of the table to simulate seismic motions. This is a powerful tool in earthquake engineering because it permits direct observation of the seismic responses of structures under controlled conditions.
Toshihiko Horiuchi, Makoto Ohsaki, Masahiro Kurata, Julio A. Ramirez, Takuzo Yamashita, Koichi Kajiwara   +5 more
openaire   +1 more source

Shaking Table Tests on Soil-Structure System to Determine Lateral Seismic Response of Buildings [PDF]

, 2015
In this study, a series of experimental shaking table tests were performed on a physical fixed based model (structure directly fixed on top of the shaking table) and a flexible base model (soil-structure system) under the influence of four scaled ...
Far, H
core  

Damping Modification Factors for Pile–Induced Filtering Effect

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Period–dependent Damping Modification Factors are usually applied to the 5%–damped pseudo–acceleration response spectrum at free field conditions to derive the seismic demand for structures with damping ratio other than 5%. Likewise, the response spectrum at the foundation level of pile–supported structures may differ from the free field ...
Emmanouil Rovithis, Maria Iovino, Dimitris Sotiriadis, Raffaele Di Laora   +3 more
wiley   +1 more source

Research on Bending Rigidity at Flange Connections of UHV Composite Electrical Equipment

Shock and Vibration, 2020
Pillar electrical equipment is an important part of substations. The application of composite materials in pillar equipment can facilitate the improvement of the seismic performance of electrical equipment.
Haibo Wang, Yongfeng Cheng, Zhicheng Lu, Zhubing Zhu, Shujun Zhang   +4 more
doaj   +1 more source

Distinguishing damages from two earthquakes —Archaeoseismology of a Crusader castle (Al-Marqab citadel, Syria) [PDF]

, 2010
Damages from two major earthquakes are identified in medieval Al-Marqab citadel (Latin: Margat) in coastal Syria. Built by the Order of St. John (Hospitallers) in the twelfth–thirteenth centuries, the hilltop fortification has masonry walls made with and
Kázmér, Miklós, Major, Balázs
core   +1 more source

Finite Element Modeling of a Thermoplastic Polyurethane Ball for Rolling Seismic Isolation

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT The Elastomeric‐Ball Pendulum (EBP) system, which consists of an elastomeric ball rolling on a spherical concrete surface, has been proposed as an isolation system for lightweight structures. Experimental tests have shown that the mechanics of such a rolling ball are remarkably complicated because the vertical load changes the shape of the ...
Sergio I. Reyes, Dimitrios Konstantinidis, Michalis F. Vassiliou   +2 more
wiley   +1 more source

Low‐Cost Friction‐Based Force‐Limiting Connection With Reduced Sensitivity to Machining Tolerances and Accelerated Repairability

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT This paper presents a novel yet practical friction‐based structural component design for low‐damage earthquake‐resistant structures. The proposed connection design is based on a conventional slotted‐bolted configuration with the novelty being the use of loose steel washer plates to establish the friction‐sliding interface.
Kaixin Chen, Georgios Tsampras, Chung‐Che Chou, Huang‐Zuo Lin, Chi‐Jeng Wu, Alvaro Córdova, Chia‐Ming Uang, Shih‐Ho Chao   +7 more
wiley   +1 more source

Effectiveness of earthquake drains in mitigating liquefaction-induced settlement [PDF]

E3S Web of Conferences
This study evaluates the effectiveness of earthquake drains in mitigating liquefaction and examines their performance at specific frequencies in loose and medium-dense sediments.
Salimah A’isyah, Yelvi, Andienti Meidi, Adi Prakoso Widjojo, Rahayu Wiwik   +4 more
doaj   +1 more source

Verification of Optimized Real-time Hybrid Control System for Prediction of Nonlinear Materials Behavior with 3-DOF Dynamic Test

Applied Sciences, 2020
Real-time hybrid method is an economical and efficient test method to evaluate the dynamic behavior. The purpose of this study is to develop the computational algorithm and to prove the reliability of a real-time hybrid control system. For performing the
Okpin Na, Jejin Park
doaj   +1 more source