Paper Information

Title: 

GUIDELINES FOR EFFICIENT DESIGN AND RETROFIT OF STEEL STRUCTURES UNDER IMPACT AND BLAST LOADS

Type: PAPER
Author(s): H.P. MAMAGHANI IRAJ*
 
 *DEPARTMENT OF CIVIL ENGINEERING, UNIVERSITY OF TORONTO, 35 ST. GEORGE STREET, TORONTO, ONTARIO M5S 1A4, CANADA
 
Name of Seminar: CONFERENCE ON STRENGTHENING AND RETROFITTING OF STRUCTURES
Type of Seminar:  CONFERENCE
Sponsor:  amirkabir university
Date:  2002Volume 1
 
 
Abstract: 

1. INTRODUCTION: THE ATTACKS ON NEW YORK’S WORLD TRADE CENTER (WTC) AND THE PENTAGON ON SEPTEMBER 11, 2001 HAVE ENCOURAGED THE STRUCTURAL ENGINEERS TO LOOK INTO WAYS FOR IMPROVING THE PERFORMANCE OF BUILDINGS THAT MIGHT BE THE TARGET OF FUTURE ATTACKS. SINCE THE ATTACK TOOK PLACE, MANY PROFESSIONAL ORGANIZATIONS IN THE UNITED STATES AND IN SOME OTHER PARTS OF THE WORLD HAD BEGUN INVESTIGATING THE STRUCTURAL PERFORMANCE OF THE WTC AND THE PENTAGON BY COLLECTING AND ANALYSING DATA. IF WARRENTED BY THE RESULTS OF THE INVESTIGATION, RECOMMENDATION WILL BE MADE FOR STRUCTURAL MODIFICATIONS THAT MIGHT INCREASE THE AVAILABLE EVACUATION TIME OR REDUCE THE LIKELIHOOD OF COLLAPSE IN THE EVENT OF SIMILAR ATTACKS IN THE FUTURE. WITH THE RECENT INCREASE IN BLAST EVENTS IN AND AROUND BUILDINGS, THE QUESTION OF HOW TO DESIGN BLAST-RESISTANT STRUCTURES HAS RESURFACED. IN OTHER WORDS, AN INCREASING NUMBER OF STRUCTURES HAVE TO BE DESIGNED NOT ONLY TO RESIST DYNAMIC FORCES EMANATING FROM NATURAL SOURCES SUCH AS WIND AND EARTHQUAKE BUT ALSO FROM ACCIDENTAL AND HUMAN DESTRUCTIVE ACTIONS SUCH AS BLAST LOADINGS. THE MOST IMPORTANT FEATURE OF BLAST-RESISTANT STRUCTURES IS THE ABILITY TO ABSORB IMPACT AND BLAST ENERGY WITHOUT CAUSING CATASTROPHIC FAILURE IN THE STRUCTURES AS A WHOLE. WHILE A NUMBER OF RELATED PUBLICATIONS EXIST, NO WIDELY AVAILABLE DOCUMENTS IN NORTH AMERICA PROVIDE INTERESTED ENGINEERS THE INFORMATION REQUIRED TO DESIGN CIVIL STRUCTURES FOR ENHANCED PHYSICAL SECURITY IN RESPONSE TO POTENTIAL IMPACT AND BLAST LOADING. THEREFORE, STRUCTURAL DESIGNERS AND ARCHITECTS WILL NEED GUIDANCE ON HOW TO DESIGN TALL BUILDINGS TO WITHSTAND VARIOUS HOSTILE ACTS AND TO REDUCE POTENTIAL INJURY TO OCCUPANTS OF THESE BUILDINGS.

 
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