Seismic qualification and time history shake-table testing of high voltage surge arrester under seismic qualification level moderate

Shanghai International Design Center (SHIDC) is a hybrid structure of steel frame and reinforced concrete core tube (SF-RCC). It is a building of unequal height two-tower system and the story lateral stiffness of two towers is different, which may result in the torsion effect. To fully evaluate structural behaviors of SHIDC under earthquakes, NosaCAD, ABAQUS, and Perform-3D, which are widely applied for nonlinear structure analysis, were used to perform elastoplastic time history analyses. Numerical results were compared with those of shake table testing. NosaCAD has function modules for transforming the nonlinear analysis model to Perform-3D and ABAQUS. These models were used in ABAQUS or Perform-3D directly. With the model transformation, seismic performances of SHIDC were fully investigated. Analyses have shown that the maximum interstory drift can satisfy the limits specified in Chinese code and the failure sequence of structural members was reasonable. It meant that the earthquake input energy can be well dissipated. The structure keeps in an undamaged state under frequent earthquakes and it does not collapse under rare earthquakes; therefore, the seismic design target is satisfied. The integrated use of multisoftware with the validation of shake table testing provides confidence for a safe design of such a complex structure.

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Seismic Response of High-Voltage Transformer-Bushing Systems Incorporating Flexural Stiffeners II: Experimental Study

Earthquake Spectra ◽

10.1193/072511eqs185m ◽

2013 ◽

Vol 29 (4) ◽

pp. 1353-1367 ◽

Cited By ~ 20

Author(s):

Maria Koliou ◽

Andre Filiatrault ◽

Andrei M. Reinhorn

Keyword(s):

Seismic Response ◽

High Voltage ◽

Companion Paper ◽

Cover Plate ◽

Rigid Base ◽

Shake Table ◽

Test Results ◽

Voltage Transformer ◽

Shake Table Testing ◽

Cover Plates

A numerical study conducted on four transformer-bushing models presented in a first companion paper indicated that high-voltage bushings mounted on the cover plates of transformers are more vulnerable to seismic loading than bushings mounted on a rigid base. This would explain why the good performance of bushings mounted on a rigid base observed during shake table testing does not correlate well with their performance in the field. In this second companion paper, the addition of flexural stiffeners on the transformer cover plates as a means to stiffen the base of bushings and mitigate their seismic vulnerability is investigated experimentally. Shake table testing was conducted on a 230 kV porcelain bushing mounted on a support structure incorporating a flexible cover plate and two stiffener configurations. Test results confirmed that stiffening the cover plates is beneficial to the seismic response of high-voltage bushings. Test results are compared to the predictions of finite element analyses.

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Generation of floor accelerations for seismic testing of operational and functional building components

Canadian Journal of Civil Engineering ◽

10.1139/l04-030 ◽

2004 ◽

Vol 31 (4) ◽

pp. 646-663 ◽

Cited By ~ 4

Author(s):

Andre Filiatrault ◽

Robert Tremblay ◽

Steven Kuan

Keyword(s):

Epicentral Distance ◽

Ground Motions ◽

Time History ◽

Shake Table ◽

Free Standing ◽

Eastern Canada ◽

Shake Table Testing ◽

Building Models ◽

Dynamic Analyses ◽

Functional Components

The main objective of this paper is to establish floor accelerations to be used for shake table testing of operational and functional components that are sensitive mainly to horizontal accelerations. For this purpose, two different ensembles of floor accelerations were generated from nonlinear time–history dynamic analyses of three- and six-storey building models incorporating ductile reinforced concrete cantilevered walls. The first ensemble was generated based on synthetic ground motions representative of the intraplate regions of eastern Canada, and the second ensemble was generated from synthetic ground motions representative of the crustal and subcrustal earthquakes of western Canada. The ground motions were selected based on the deaggregations of the seismic hazard for each region in terms of most likely magnitude – epicentral distance scenarios. The building models were designed in accordance with the current seismic provisions of the National Building Code of Canada applicable for each region. Application of the resulting floor accelerations in shake table testing of free-standing bookcases and interior partition walls is reported in a companion paper.Key words: floor accelerations, ground motions, nonlinear dynamic analyses, nonstructural, operational and functional components.

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