Shake table tests of a quarter-scale three-storey building model with piezoelectric friction dampers

2004 ◽  
Vol 11 (4) ◽  
pp. 239-257 ◽  
Author(s):  
Chaoqiang Chen ◽  
Genda Chen
Keyword(s):  
Shake Table ◽  
Shake Table Tests ◽  
Friction Dampers ◽  
Building Model ◽  
Storey Building

Shaking Table Tests of a Four-Story Miniature Steel Building— Model Validation

2006 ◽  
Vol 22 (3) ◽  
pp. 755-780 ◽  
Author(s):  
Mario E. Rodríguez ◽  
José I. Restrepo ◽  
John J. Blandón
Keyword(s):  
Dynamic Response ◽  
Analytical Model ◽  
Shaking Table ◽  
Experimental Program ◽  
Shake Table ◽  
Base Shear ◽  
Shake Table Tests ◽  
Nonlinear Dynamic Response ◽  
Building Model ◽  
High Level

This paper discusses an analytical model developed to study the linear and nonlinear dynamic response of a four-story steel miniature building subjected to low-level and high-level shake table tests inducing nominally elastic and inelastic response, respectively. The analytical model was calibrated and validated against the results of the experimental program. A comparison of measured and calculated responses is made in the paper. Of particular interest, absolute floor accelerations were found more sensitive to high-frequency content than other response parameters such as base shear force and overturning base moment. The seismic performance of gravity-dominated beams is also examined in this paper. It was found that the cumulative nature of rotation demands in this type of beams should be considered in seismic design. The model is also used to observe differences in dynamic response of buildings when subjected to shake table tests with low fidelity in the reproduction of earthquake records.

Study on 3-D Measurement Method for Structural Dynamic Displacement in Shake Table Tests Using Image Processing

2002 ◽  
Author(s):  
Satoshi Fujita ◽  
Osamu Furuya ◽  
Yasushi Niitsu ◽  
Tadashi Mikoshiba ◽  
Hiroaki Yamazaki
Keyword(s):  
Image Processing ◽  
Measurement System ◽  
Measurement Method ◽  
Measurement Accuracy ◽  
Dynamic Measurement ◽  
Shake Table ◽  
Shake Table Tests ◽  
3 Dimensional ◽  
Building Model ◽  
Real Scale

This study has been examined about a 3-dimensional measurement method suitable for a fracturing test of real scale model using shake table test, and has proposed the measurement system using image processing. Although this measurement system is based on a simple theory of measurement, it is a very convenient system which only requires to install the markers on the object structure and it can be considered as the most suitable measurement system to evaluate the complex 3-dimensional behavior of real scale structure. Fundamental hardware and software in measurement system has been constructed until now. Moreover, the fundamental dynamic measurement accuracy and effectiveness of the proposed measurement system has been confirmed from the shake table tests using the 5-storey building model in elastic region. This paper describes the dynamic measurement accuracy, the effectiveness of the proposed system and the evaluation for practical use from the results of shake table tests using the collapse building model and the wooden house model.

Seismic Behavior of Brick Cave Dwellings: Shake Table Tests

2021 ◽  
pp. 102886
Author(s):  
Jianyang Xue ◽  
Pengchun Hu ◽  
Fengliang Zhang ◽  
Yan Zhuge
Keyword(s):  
Seismic Behavior ◽  
Shake Table ◽  
Shake Table Tests

Comparison of Failure Modes of Piping Systems With Wall Thinning Subjected to In-Plane, Out-of-Plane, and Mixed Mode Bending Under Seismic Load: An Experimental Approach

2010 ◽  
Vol 132 (3) ◽  
Author(s):  
Izumi Nakamura ◽  
Akihito Otani ◽  
Masaki Shiratori
Keyword(s):  
Dynamic Behavior ◽  
Failure Modes ◽  
Seismic Load ◽  
Piping System ◽  
Shake Table ◽  
Shake Table Tests ◽  
Wall Thinning ◽  
Piping Systems ◽  
Out Of Plane ◽  
Plane Bending

Pressurized piping systems used for an extended period may develop degradations such as wall thinning or cracks due to aging. It is important to estimate the effects of degradation on the dynamic behavior and to ascertain the failure modes and remaining strength of the piping systems with degradation through experiments and analyses to ensure the seismic safety of degraded piping systems under destructive seismic events. In order to investigate the influence of degradation on the dynamic behavior and failure modes of piping systems with local wall thinning, shake table tests using 3D piping system models were conducted. About 50% full circumferential wall thinning at elbows was considered in the test. Three types of models were used in the shake table tests. The difference of the models was the applied bending direction to the thinned-wall elbow. The bending direction considered in the tests was either of the in-plane bending, out-of-plane bending, or mixed bending of the in-plane and out-of-plane. These models were excited under the same input acceleration until failure occurred. Through these tests, the vibration characteristic and failure modes of the piping models with wall thinning under seismic load were obtained. The test results showed that the out-of-plane bending is not significant for a sound elbow, but should be considered for a thinned-wall elbow, because the life of the piping models with wall thinning subjected to out-of-plane bending may reduce significantly.

Shake table tests on prestressed concrete frames

1998 ◽  
Vol 31 (10) ◽  
pp. 676-682 ◽  
Author(s):  
Y. L. Mo ◽  
W. L. Hwang
Keyword(s):  
Prestressed Concrete ◽  
Shake Table ◽  
Concrete Frames ◽  
Shake Table Tests

Shake table tests and analytical simulations of a steel structure with shape memory alloy dampers

2014 ◽  
Vol 23 (12) ◽  
pp. 125002 ◽  
Author(s):  
Y M Parulekar ◽  
A Ravi Kiran ◽  
G R Reddy ◽  
R K Singh ◽  
K K Vaze
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Steel Structure ◽  
Shake Table ◽  
Shake Table Tests

scholarly journals Learning Damage Representations with Sequence-to-Sequence Models

Sensors ◽  
2022 ◽  
Vol 22 (2) ◽  
pp. 452
Author(s):  
Qun Yang ◽  
Dejian Shen
Keyword(s):  
Damage Detection ◽  
Health Monitoring ◽  
Research Community ◽  
Regions Of Interest ◽  
Data Driven ◽  
Economic Losses ◽  
Shake Table ◽  
Learning Models ◽  
Shake Table Tests ◽  
Damage States

Natural hazards have caused damages to structures and economic losses worldwide. Post-hazard responses require accurate and fast damage detection and assessment. In many studies, the development of data-driven damage detection within the research community of structural health monitoring has emerged due to the advances in deep learning models. Most data-driven models for damage detection focus on classifying different damage states and hence damage states cannot be effectively quantified. To address such a deficiency in data-driven damage detection, we propose a sequence-to-sequence (Seq2Seq) model to quantify a probability of damage. The model was trained to learn damage representations with only undamaged signals and then quantify the probability of damage by feeding damaged signals into models. We tested the validity of our proposed Seq2Seq model with a signal dataset which was collected from a two-story timber building subjected to shake table tests. Our results show that our Seq2Seq model has a strong capability of distinguishing damage representations and quantifying the probability of damage in terms of highlighting the regions of interest.

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