scholarly journals Numerical Modelling of CFS Three-Story Strap-Braced Building under Shaking-Table Excitations

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 118
Author(s):  
Alessia Campiche
Keyword(s):  
Numerical Modelling ◽  
Seismic Behavior ◽  
Numerical Models ◽  
Dynamic Properties ◽  
Shaking Table ◽  
Shake Table ◽  
Shake Table Tests ◽  
Research Activities ◽  
Story Drift ◽  
Cold Formed Steel

In recent research activities, shake-table tests were revealed to be useful to investigate the seismic behavior of cold-formed steel (CFS) buildings. However, testing full-scale buildings or reduced-scale prototypes is not always possible; indeed, predicting tools and numerical models could help designers to evaluate earthquake response. For this reason, numerical modelling of two strap-braced prototype buildings, recently tested on shake-table at University of Naples Federico II in cooperation with Lamieredil S.p.A. company, was developed. The models were validated trough the comparison between experimental and numerical results, in term of dynamic properties (fundamental period of vibration and modal shapes), peak roof drift ratios and peak inter-story drift ratios. Although dynamic properties of mock-ups were captured with accuracy by the developed models, the comparison highlighted the need to consider accumulation of damage and rocking phenomenon in the modelling to capture with good accuracy the seismic behavior of CFS strap-braced building, subjected to high intensity records.

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

Shake table tests of three storey cold-formed steel structures with strap-braced walls

2019 ◽  
Vol 17 (7) ◽  
pp. 4217-4245 ◽  
Author(s):  
Luigi Fiorino ◽  
Bianca Bucciero ◽  
Raffaele Landolfo
Keyword(s):  
Steel Structures ◽  
Shake Table ◽  
Shake Table Tests ◽  
Cold Formed Steel

scholarly journals Investigation of Seismic Behavior of Container Crane Structures by Shake Table Tests and Mathematical Modeling

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
C. Oktay Azeloglu ◽  
Ayse Edincliler ◽  
Ahmet Sagirli
Keyword(s):  
Mathematical Modeling ◽  
Mathematical Model ◽  
Seismic Behavior ◽  
Dynamic Behaviour ◽  
Earthquake Ground Motion ◽  
Shake Table ◽  
Engineering Structures ◽  
Shake Table Tests ◽  
Container Cranes ◽  
Container Crane

This paper is concerned with the verification of mathematical modeling of the container cranes under earthquake loadings with shake table test results. Comparison of the shake table tests with the theoretical studies has an important role in the estimation of the seismic behavior of the engineering structures. For this purpose, a new shake table and mathematical model were developed. Firstly, a new physical model is directly fixed on the shake table and the seismic response of the container crane model against the past earthquake ground motion was measured. Secondly, a four degrees-of-freedom mathematical model is developed to understand the dynamic behaviour of cranes under the seismic loadings. The results of the verification study indicate that the developed mathematical model reasonably represents the dynamic behaviour of the crane structure both in time and frequency domains. The mathematical model can be used in active-passive vibration control studies to decrease structural vibrations on container cranes.

The influence of construction joint on the seismic behavior of reinforced concrete frame structure

2016 ◽  
Vol 20 (7) ◽  
pp. 1125-1138 ◽  
Author(s):  
Jing Yu ◽  
Xiaojun Liu ◽  
Xingwen Liang
Keyword(s):  
Reinforced Concrete ◽  
Seismic Behavior ◽  
Numerical Models ◽  
Time History ◽  
Frame Structure ◽  
Nonlinear Time History Analysis ◽  
Reinforced Concrete Frame ◽  
Concrete Frame ◽  
Construction Joint ◽  
Story Drift

A new model that can simulate the behavior of construction joint subjected to seismic forces was proposed. Nonlinear time-history analysis was carried out for reinforced concrete regular frame structures designed in different seismic intensity regions as well as with different height-to-width ratios. Two kinds of numerical models are adopted to simulate the seismic behavior of each frame, one with construction joint using the new proposed model and the other without construction joint using the conventional model. Results show that the influence of construction joint on the seismic behavior of reinforced concrete frame is strongly related to structural nonlinearity. It may increase the top displacement and the inter-story drift, change the inter-story drift distributions, and exacerbated the local reaction of key members. The influence of construction joint cannot be ignored for structures with low emergency capacity against major earthquake. Seismic design suggestions are proposed from the aspect of calculation analysis method.

Shake Table Testing of a Low Damage Steel Building with Asymmetric Friction Connections (AFC)

2018 ◽  
Vol 763 ◽  
pp. 400-405
Author(s):  
Ali A. Rad ◽  
Gregory A. MacRae ◽  
Nikoo K. Hazaveh ◽  
Quincy T. Ma
Keyword(s):  
Shaking Table ◽  
Shake Table ◽  
Moment Frame ◽  
Shake Table Testing ◽  
Steel Moment Frame ◽  
Residual Drift ◽  
Steel Building ◽  
Story Drift ◽  
Column Bases

The paper describes the shaking table performance of a half-scale two-story steel moment frame with asymmetric friction connections (AFCs) at the column bases and at the beam ends. The results showed that the beam ends and the base-column joints exhibited bilinear and trilinear response respectively. Residual drifts were less than 0.2% for shake table trials up to 3% peak inter-story drift. Even at a peak inter-story drift of 6.5%, the residual drift response was still only 0.7%.

Shake table tests of a full-scale two-story sheathing-braced cold-formed steel building

2017 ◽  
Vol 151 ◽  
pp. 633-647 ◽  
Author(s):  
Luigi Fiorino ◽  
Vincenzo Macillo ◽  
Raffaele Landolfo
Keyword(s):  
Full Scale ◽  
Shake Table ◽  
Shake Table Tests ◽  
Steel Building ◽  
Cold Formed Steel

scholarly journals Data set from shake table tests of free-standing rocking bodies

2021 ◽  
pp. 875529302110200
Author(s):  
Michalis F Vassiliou ◽  
Cihan Cengiz ◽  
Matt Dietz ◽  
Luiza Dihoru ◽  
Marco Broccardo ◽  
...  
Keyword(s):  
Earthquake Engineering ◽  
Numerical Models ◽  
Three Dimensional ◽  
Time History ◽  
Stochastic Comparison ◽  
Shake Table ◽  
Free Standing ◽  
Earthquake Excitation ◽  
Shake Table Tests ◽  
Data Set

In earthquake engineering, structural models are validated by performing a time history analysis and comparing its maximum to the maximum response obtained by a shake table test. It has been shown that this is a sufficient (but not a necessary) precondition to accept a numerical model. Numerical models can fail to predict the planar rocking response of a rigid block, but may succeed in predicting the statistics of the response to an ensemble of ground motions. As seismic response is inherently stochastic, comparison of the statistics of the numerically simulated response to the statistics of the experimentally obtained benchmark response for the same ensemble of earthquake excitation is a sufficient (and easier to pass) model validation test. This article describes the publicly available data of a set of 12 free rocking vibration and 115 shake table tests of six three-dimensional rocking and sliding columns, designed at ETH Zurich and performed at EQUALS Laboratory, University of Bristol. The data can be used to statistically validate different approaches that aim to model three-dimensional rocking structures.

Dataset from the shake table tests of a rocking podium structure

2021 ◽  
pp. 875529302098801
Author(s):  
Michalis F Vassiliou ◽  
Cihan Cengiz ◽  
Matt Dietz ◽  
Luiza Dihoru ◽  
Marco Broccardo ◽  
...  
Keyword(s):  
Seismic Design ◽  
Earthquake Engineering ◽  
Numerical Models ◽  
Ground Motions ◽  
Analytical Models ◽  
Shake Table ◽  
Shake Table Tests ◽  
Time Histories ◽  
Validation Procedure ◽  
University Of Bristol

Conventional validation of analytical and numerical models in Earthquake Engineering involves the comparison of numerically simulated response time histories to experimentally obtained benchmark responses to the same earthquake excitations. As the seismic design problem is inherently stochastic, an alternative, statistical, and easier-to-pass validation procedure has been suggested. As an example, numerical and analytical models may fail to predict the planar rocking response of a rigid block to a specific ground motion, but they can be proven quite successful in predicting the statistical distribution of the maxima of that response to an ensemble of ground motions. This article describes the publicly available data obtained from a series of 226 shake table tests of a 3D rocking podium structure, designed at ETH Zurich and carried out at EQUALS Lab, University of Bristol. This well-documented dataset is the largest one involving a shake table and can be used to statistically validate analytical and numerical models of rocking structures.

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