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Shake Table Tests And Numerical Modeling Of Seismically Isolated Railway Bridges

Dec 15, 2019· Shake table test for long-span cable-stayed bridges is very essential to validate the current analysis model and seismic design specifications or guidance. Because of the larger total length of the structures, a major challenge of this kind of test is how to scale a long-span cable-stayed bridge to a practical test model that can provide a ...

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Accuracy Assessment Of Shake Table Device On Strong ...

Accuracy Assessment Of Shake Table Device On Strong ...

The numerical model of the high-speed railway station was built to verify the energy-TH index can better reflect the influence of output precision of the shake table on structural response than other indices. Those results can provide a reference for rationally performing the shake table test and evaluating the device performance. 2.

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Hybrid Shake Table For The Testing Of Midlevel Seismic ...

Hybrid Shake Table For The Testing Of Midlevel Seismic ...

than real-time. In an effort to examine the behavior of seismically isolated structures with the isolation plane located in the upper stories of the structure rather than at the base, hybrid shake table tests were performed where the substructure was modeled numerically, and the isolation system and superstructure were tested experimentally.

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Dynamic Performance Analysis Of A Seismically Isolated ...

Dynamic Performance Analysis Of A Seismically Isolated ...

Mar 31, 2012· In order to study the dynamic performance of seismically isolated bridges under the most unfavorable loads in the longitudinal direction, a dynamic equation for vehicle braking in the longitudinal direction is established. A four or fiveorder Runge-Kutta method is adopted to obtain the time-history response of a wheel set under braking force.

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Numerical Analysis On Longitudinal Seismic Responses Of ...

Numerical Analysis On Longitudinal Seismic Responses Of ...

As to analyze the effects of friction pendulum bearings (FPB) on the responses of simply supported bridges on a high-speed railway under longitudinal earthquakes, a spatially integrated track-bridge model with a CRTS II slab ballastless track and FPB was established by using the OpenSEES software. The seismic responses under different ground motions were calculated and compared with those ...

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Earthquake Tragedy And Application Of Seismic Isolation ...

Earthquake Tragedy And Application Of Seismic Isolation ...

2. tests on the durability of isolator, which include low cycle fatigue failure tests and creep and ozone aging tests; 3. tests on the structural system, which concern shaking table tests for large scale structural models. In particular, a 6-storey steel frame model with different locations of the isolation system was tested

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Seismic Performance Of Highway Bridges With Fusing Bearing ...

Seismic Performance Of Highway Bridges With Fusing Bearing ...

Jan 25, 2013· Jianzhong Li, Nailiang Xiang, Hu Tang and Zhongguo Guan, Shake-table tests and numerical simulation of an innovative isolation system for highway bridges, Soil Dynamics and Earthquake Engineering, 86, (55), (2016).

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Nheri @ Uc San Diego

Nheri @ Uc San Diego

Jul 10, 2019· Researchers of UC San Diego conducted shake table tests on a 3-story, non-ductile, masonry-infilled, reinforced concrete frame representing structures built in California in the 1920's. The tests on the 2/3 scale specimen are part of the collaborative project between University of Colorado at Boulder, Stanford University and University of ...

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The Earthquake Engineering Online Archive Nisee E

The Earthquake Engineering Online Archive Nisee E

The Earthquake Engineering Online Archive NISEE e-Library 13th World Conference on Seismic Isolation, Energy Dissipation and Active Vibration Control of Structures. - commemorating JSSI 20th Anniversary - September 24-27 2013, Sendai, Japan.

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A European Association For The Control Of Structures …

A European Association For The Control Of Structures …

numerical material model, one should adopt case-specific numerical models in the structural analyses. These models need to account for the temporal scale, the spatial scale, and the thermo-mechanical treatments of preparation of the alloy, and they should provide consistency with the results of a suitable experimental campaign.

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Effects Of Track Structure On Seismic Behavior Of ...

Effects Of Track Structure On Seismic Behavior Of ...

resenting the end part of a railway bridge were as-sembled on the shake table. The abutment model was a steel-made rigid steel frame, 1.0 m long, 3.0 m wide, and 0.5 m high, tightly fastened to the table. The model of the isolated bridge girder was an RC-slab, 1.5m long, 5.0m wide, and 0.2m high. The girder was supported by

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Performance Limit States Of Seismically …

Performance Limit States Of Seismically …

In order to better understand the performance limit states of seismically isolated buildings under extreme ground motions, a series of bearing component tests and shake table experiments are being conducted on ¼ scale base isolated buildings with a simulated moat wall. The

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Numerical Investigation On Seismic Responses Of High ...

Numerical Investigation On Seismic Responses Of High ...

Numerical Investigation on Seismic Responses of High-speed Railway Isolated Bridge with Lead Rubber Bearings Chen Ling-kun 1,2 and Jiang Li-zhong 1,2 1School of Civil Engineering, Central South University, Changsha, Hunan, China 2National Engineering Laboratory for High Speed Railway Construction, Central South University, Changsha, China

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Experimental And Numerical Study On Isolated Simply ...

Experimental And Numerical Study On Isolated Simply ...

Dec 01, 2019· To determine the adequacy of above numerical in estimating the seismic response of isolated bridges subjected to a fault rupture, numerical and experimental results were compared. Achieved shake table motions were used to excite the numerical model. 6. Shake table test and numerical results 6.1. Test results

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Shaking Table Tests And Numerical Studies On The Effect Of ...

Shaking Table Tests And Numerical Studies On The Effect Of ...

Sep 01, 2017· Shake table test was conducted on the model structure using FPBs combined with VDs. ... most seismically isolated systems include an energy dissipation mechanism to introduce a higher level of damping in the systems in order to limit the displacement to an acceptable level. ... W.S. LuShaking table model test and numerical analysis of a complex ...

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Shaking Table Testing And Numerical Modeling Of Continuous ...

Shaking Table Testing And Numerical Modeling Of Continuous ...

Iemura H., Iwata S., Murata K. Shake table tests and numerical modeling of seismically isolated railway bridges. Proceedings of the 13th World Conference on Earthquake Engineering, 2004. Esmaeili M., Noghabi H. H. Investigating seismic behavior of ballasted railway track in earthquake excitation using finite-element model in three-dimensional ...

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Shake Table Testing On Restoring Capability Of Double ...

Shake Table Testing On Restoring Capability Of Double ...

Shake table testing on restoring capability of double concave friction pendulum seismic isolation systems ... (FPB) in simply supported railway bridges, Bulletin of Earthquake Engineering, 10.1007/s10518-019-00698 ... Collapse performance of seismically isolated buildings designed by the procedures of ASCE/SEI 7, Engineering Structures, 10.1016 ...

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Shake Table Testing Of A Highway Bridge Structure With ...

Shake Table Testing Of A Highway Bridge Structure With ...

within the isolation system of a quarter-scale highway bridge model and subjected to seismic loading via shake table testing. For these tests, the bridge is seismically isolated using elastomeric ...

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Hybrid Testing Of Seismically Isolated Bridges

Hybrid Testing Of Seismically Isolated Bridges

Owing to their large size bridges do not lend themselves to seismic testing at full or even realistic scale. Their seismic response has been studied experimentally either via cyclic testing of piers, or through shake table tests on scaled models (Casirati et al., 1996, Correal et al., 2007). The

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Effect Of The Rail Track On Dynamic Behavior Of The Base ...

Effect Of The Rail Track On Dynamic Behavior Of The Base ...

IEMURA H., IWATA S., and MURATA K., "Shake Table Tests and Numerical Modeling of Seismically Isolated Railway Bridges", Proceedings of the 13 th World Conference on …

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Negative Stiffness Device For Seismic Protection Of ...

Negative Stiffness Device For Seismic Protection Of ...

May 05, 2016· This paper presents results that represent proof-of-concept for weakening with the use of the NSD based on the shake table testing of a 3-story seismically isolated structure, equipped with these devices complemented by viscous dampers.

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Simplified Calculation Modeling Method Of Multi

Simplified Calculation Modeling Method Of Multi

Iemura H, Iwata S, Murata K (2004) Shake table tests and numerical modeling of seismically isolated railway bridges. In: 13th world conference on earthquake engineering, Vancouver, BC, Canada Jankowski R, Wilde K, Fujino Y (1998) Pounding of superstructure segments in isolated elevated bridge during earthquakes.

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