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DESIGN PROPOSAL AND ANALYSIS OF CURVED BRACE SYSTEM TO REDUCE DRIFT IN MOMENT FRAME STRUCTURES
by
Aishwarya Balagopal
A Thesis Presented to the
FACULTY OF THE USC SCHOOL OF ARCHITECTURE
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
MASTER OF BUILDING SCIENCE
August 2012
Copyright 2012 Aishwarya Balagopal
Object Description
| Title | Design proposal and analysis of curved brace system to reduce drift in moment frame structures |
| Author | Balagopal, Aishwarya |
| Author email | abalagop@usc.edu;abalagop@usc.edu |
| Degree | Master of Building Science |
| Document type | Thesis |
| Degree program | Building Science |
| School | School of Architecture |
| Date defended/completed | 2012-08-03 |
| Date submitted | 2012-08-03 |
| Date approved | 2012-08-03 |
| Restricted until | 2012-08-03 |
| Date published | 2012-08-03 |
| Advisor (committee chair) | Shierle, Goetz |
| Advisor (committee member) |
Carlson, Anders Murat, Melek Losche, Edward |
| Abstract | Wind and seismic loads cause buildings to shift from their vertical axis of inertia resulting in lateral displacement, also termed as drift. It is extremely crucial to stabilize tall buildings in the event of large lateral load that cause buildings to flex beyond their limit of elasticity, resulting in structural damage that can prove to be fatal. This thesis proposes to study the efficiency of a diagonal curved brace system as an alternate to retrofit existing steel moment frame structures. The study was conducted with a moment frame structure as a base case and how retrofitting the structure with the proposed diagonal curved brace induced better performance in the structure as compared to the performance of the structure when retrofitted with different forms of straight brace systems. Analyses of the proposed system was performed in SAP2000- a finite element analysis software, the mass of steel in the structure has been constant for all retrofit structures in the study. The idea of using a parabolic brace form was obtained from the catenary form used in the design of suspension bridges and the parabolic form used in the design of the Eiffel tower. |
| Keyword | reduce drift; structural systems; curved brace |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m |
| Contributing entity | University of Southern California |
| Rights | Balagopal, Aishwarya |
| Physical access | The author retains rights to his/her dissertation, thesis or other graduate work according to U.S. copyright law. Electronic access is being provided by the USC Libraries in agreement with the author, as the original true and official version of the work, but does not grant the reader permission to use the work if the desired use is covered by copyright. It is the author, as rights holder, who must provide use permission if such use is covered by copyright. The original signature page accompanying the original submission of the work to the USC Libraries is retained by the USC Libraries and a copy of it may be obtained by authorized requesters contacting the repository e-mail address given. |
| Repository name | University of Southern California Digital Library |
| Repository address | USC Digital Library, University of Southern California, University Park Campus MC 7002, 106 University Village, Los Angeles, California 90089-7002, USA |
| Repository email | cisadmin@dots.usc.edu |
| Archival file | uscthesesreloadpub_Volume4/etd-BalagopalA-1135.pdf |
Description
| Title | Page 1 |
| Contributing entity | University of Southern California |
| Repository email | cisadmin@dots.usc.edu |
| Full text | DESIGN PROPOSAL AND ANALYSIS OF CURVED BRACE SYSTEM TO REDUCE DRIFT IN MOMENT FRAME STRUCTURES by Aishwarya Balagopal A Thesis Presented to the FACULTY OF THE USC SCHOOL OF ARCHITECTURE UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree MASTER OF BUILDING SCIENCE August 2012 Copyright 2012 Aishwarya Balagopal |
