Real-time hybrid shaking table testing method for the performance evaluation of a tuned liquid damper controlling seismic response of building structures

This study investigated the real-time substructure shaking table testing (RTSSTT) of an equipment-structure-soil (ESS) system and the effects of soil on the seismic energy responses of the equipment-structure (ES) subsystem. First, the branch modal substructure approach was employed to derive the formulas needed for the RTSSTT of the ESS system. Then, individual equations for calculating the energy responses of the equipment and the structure were provided. The ES subsystem was adopted as the experimental substructure, whereas the reduced soil model was treated as the numerical substructure when the RTSSTT was performed on the ESS system. The effectiveness of the proposed testing method was demonstrated by comparing the test results with those of the integrated finite element analysis. The energy responses of the ES subsystem in the case of rigid ground (i.e., the ES system) were compared with those considering the effects of soil (i.e., the ESS system). The input energy responses of the ES subsystem were found to decrease significantly after taking the effects of soil into account. Differences due to the soil effects should be considered in the seismic design for the ES system.

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Response Control Performance Evaluation of MR Damper by Shaking Table Tests and Real-Time Hybrid Tests

Advances in Science and Technology ◽

10.4028/www.scientific.net/ast.56.212 ◽

2008 ◽

Vol 56 ◽

pp. 212-217 ◽

Cited By ~ 1

Author(s):

Hideo Fujitani ◽

Hiroaki Sakae ◽

Mai Ito ◽

Takeshi Hiwatashi

Keyword(s):

Real Time ◽

Sliding Mode ◽

Structural Response ◽

Mr Damper ◽

Shaking Table ◽

Magnetorheological Damper ◽

Control Force ◽

Building Structures ◽

Shaking Table Tests ◽

Hybrid Test

Magnetorheological damper (MR damper) has been expected to control the response of civil and building structures in recent years, because of its large force capacity and variable force characteristics. In this paper, a series of real-time hybrid test was conducted and the results of real time hybrid tests were compared to those of shaking table tests. To determine the control force of the MR damper, skyhook control and sliding mode control theory were employed. As the results, the validity of real-time hybrid test was verified. This paper describes the capability of MR damper to control the structural response.

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Seismic energy response analysis of equipment-structure system via real-time dynamic substructuring shaking table testing

Advances in Structural Engineering ◽

10.1177/1369433219864458 ◽

2019 ◽

Vol 23 (1) ◽

pp. 37-50 ◽

Cited By ~ 1

Author(s):

Jihong Bi ◽

Lanfang Luo ◽

Nan Jiang

Keyword(s):

Real Time ◽

Shaking Table Test ◽

Seismic Energy ◽

Shaking Table ◽

Energy Calculation ◽

Test Results ◽

Structure System ◽

Time Dynamic ◽

Dynamic Substructuring ◽

Shaking Table Testing

Dynamic equations are presented that have been deduced for a real-time dynamic substructuring shaking table test of an equipment-structure system, based on the branch mode substructure method. The equipment is adopted as the experimental substructure, which is loaded by the shaking table, while the structure is adopted as the numerical substructure. Real-time data communication occurs between the two substructures during the test. A real-time seismic energy calculation method was proposed for the calculation of energy responses, both in the experimental substructure and the numerical substructure. Taking a representative four-story steel frame/equipment model, real-time dynamic substructuring shaking table tests and overall model tests were executed. The proposed real-time dynamic substructuring shaking table testing method was verified by comparing the test results with shaking table test results for the overall model. The energy responses of each component in the equipment-structure system, using different connection types, also were studied. Changes in the connection types can lead to changes in the energy responses of the equipment-structure system, especially with respect to the equipment. The choice of the connection for the equipment-structure coupled system should take into account the operational performance objective of the equipment.

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Shaking table testing and numerical simulation of the seismic response of a typical Mexican colonial temple

Earthquake Engineering & Structural Dynamics ◽

10.1002/eqe.1127 ◽

2011 ◽

Vol 41 (2) ◽

pp. 233-253 ◽

Cited By ~ 10

Author(s):

Marcos Chávez ◽

Roberto Meli

Keyword(s):

Numerical Simulation ◽

Seismic Response ◽

Shaking Table ◽

Shaking Table Testing

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Experimental Method Using the Inertial Loading Equipment by the Large Scale Shaking Table

Seismic Engineering, Volume 2 ◽

10.1115/pvp2002-1398 ◽

2002 ◽

Author(s):

Satoshi Yamada ◽

Yuka Matsumoto ◽

Michio Yamaguchi ◽

Nobuyuki Ogawa ◽

Akira Wada ◽

...

Keyword(s):

Experimental Method ◽

Real Time ◽

Large Scale ◽

Full Scale ◽

Shaking Table ◽

Building Structures ◽

Natural Period ◽

Test Set ◽

Inertial Loading ◽

Set Up

In this paper, a new experimental method of full scale real time shaking table test of structural element is introduced. The main feature of this experimental method is characterized by the use of the inertial loading equipment. The inertial loading equipment consists of a loading frame, a counter weight and isolators. The loading frame supported by the isolators was set on the shaking table. Specimens used in this experimental method were partial frames taken out from full scale building structures. The test set-up was composed of a specimen, the inertial loading equipment and loading beam which transmits the horizontal force to the specimen from the inertial loading equipment. This test set-up, regarded as a single degree of freedom system, makes it easy to understand the dynamic behavior of the test set-up including a specimen. Furthermore, the natural period of the experimental system corresponds to the fundamental natural period of existing building structures. So, full scale and real time dynamic loading test of partial frame can be realized. This method was developed for the existing large scale shaking table and the effectiveness has been already verified through many experiments. Further development of the experimental method adjusted to the 3-D largest shaking table under construction at present is also described.

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