Effect of Lateral Load Patterns in Pushover Analysis

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Effect of Lateral Load Patterns in Pushover Analysis

Author: Abhilash R. Biju V. Rahul Leslie | Size: 0.25 MB | Format: PDF | Quality: Unspecified | Publisher: 0th National Conference on Technological Trends (NCTT09) 6-7 Nov 2009 College of Engineering Trivandrum 138 | Year: 2009 | pages: 5

Pushover analysis is a static, nonlinear procedure in
which the magnitude of the structural loading is incrementally
increased in accordance with a certain predefined pattern. With
the increase in the magnitude of the loading, weak links and
failure modes of the structure are found. Static pushover analysis is an attempt by the structural engineering profession to evaluate the real strength of the structure and it promises to be a useful and effective tool for performance based design. The performance point of the structure depends on the lateral load pattern applied,on the structure. Commonly applied load patterns are inverted triangle and uniformly distributed. Then guidelines like FEMA257 & 356 provide guidelines for lateral loads and doing pushover analysis. Here pushover analysis is done a typical RCC structure by applying different lateral load patterns using ETABS and SAP2000. The lateral load patterns used here are uniform load distribution and equivalent lateral force distribution as per FEMA-257, lateral loads from response spectrum analysis as per IS-1893(2002) and the lateral load pattern as per Upper-Bound Pushover analysis method.

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