Civil Engineering Association

Seismic Response of a Full-scale 5-story Steel Frame Building Isolated by Triple Pend

Abstract (Summary)
A full-scale shake table test of a 5-story steel moment frame building was carried out as part of a collaborative NEES/E-Defense research program. The building was tested in three configurations: isolated with triple pendulum bearings (TPB), isolated with lead rubber bearings combined with cross linear sliders (which is not discussed in this dissertation), and fixed base. The test provided full-scale response data of both the isolation system and the isolated structure and demonstrated the efficiency of the isolation system in reducing the demands in the isolated structure. A 3-dimensional TPB element with a general friction model that accounts for the variation of friction coefficients on both velocity and vertical force was developed to predict the response of individual TPB and the overall isolation system. The element accounts for both vertical-horizontal coupling behavior and bidirectional coupling of TPB. The horizontal behavior of the element is based on a series combination of bidirectional elastic-plastic springs and the circular gap elements. The new TPB element was verified by the full scale test data and has been implemented in OpenSees so that it is available for general use. The analytical model of the specimen building was also developed and validated by the test data from both the isolated base and fixed base tests. The following modeling assumption were shown to best present the response characteristics of the tested structure: (1) beam were modeled as nonlinear elements with resultant composite sections, (2) moment connection were modeled using a Krawinkler panel zone model, and (3) energy dissipation was represented by Rayleigh damping calibrated to include higher mode effects observed in the test data, along with additional interstory dampers.

Code:
***************************************

Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:

http://forum.civilea.com/thread-27464.html

***************************************

Code:
***************************************

Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:

http://forum.civilea.com/thread-27464.html

***************************************

This post has been made by CivilEA Post-Generator ver 2.1.6

by trying to download the file, I get this:

Quote:Archive is Encrypted or Password Protected

The file you attempted to download is an archive that is encrypted or password protected. MediaFire does not support unlimited downloads of encrypted or password protected archives and the limit for this file has been reached. MediaFire understands the need for users to transfer encrypted and secured files, we offer this service starting at $1.50 per month.

We have informed the owner that sharing of this file has been limited and how they can resolve this issue.

Still have questions, or think we've made a mistake? Please contact support for further assistance.

Too much problems with mediafire caused by this limitation. All our users are requested to stop using mediafire and to stop sharing own files and other's files in mediafire excepting not password protected files.

new link

Code:
***************************************

Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:

http://forum.civilea.com/thread-27464.html

***************************************

hich

Grunf

BennyP

hich