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The document discusses the necessity of three-dimensional dynamic analysis for structural systems in seismic zones, highlighting the importance of accurately estimating seismic force distribution. It emphasizes that dynamic analysis can yield significantly different vertical force distributions compared to static load analysis. The paper also mentions various methods for estimating seismic forces and the need for further interpretation of existing guidelines.

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6 views1 page

Abstract

The document discusses the necessity of three-dimensional dynamic analysis for structural systems in seismic zones, highlighting the importance of accurately estimating seismic force distribution. It emphasizes that dynamic analysis can yield significantly different vertical force distributions compared to static load analysis. The paper also mentions various methods for estimating seismic forces and the need for further interpretation of existing guidelines.

Uploaded by

0q3rc1xxm
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Eng. & Tech. Journal, Vol.28, No.

7, 2010

Seismic Analysis Using Three Dimensional Modeling


Mohammed Ahmed A. Al-Hamdany*
Received on:4/5/2009
Accepted on:7/1/2010
Abstract
Three-dimensional dynamic analysis is required for a large number of different
types of structural systems that are constructed in Seismic Zones. The lateral force
requirements suggest several methods that can be used toestimate the distribution of
seismic forces within a structure. However, theseguidelines are not unique and need
further interpretations. The major advantage of using the forces obtained from a
dynamic analysis as the basis for a structural design is that the vertical distribution of
forces may significantly be different from the forces obtained from an equivalent static
load analysis.
‫ﺍﻟﺘﺤﻠﻴل ﺍﻟﺯﻟﺯﺍﻟﻲ ﺒﺄﺴﺘﺨﺩﺍﻡ ﻨﻤﻭﺫﺝ ﺜﻼﺜﻲ ﺍﻻﺒﻌﺎﺩ‬
‫ﺍﻟﺨﻼﺼﺔ‬
‫ ﺍﻟﻤﺸﻴﺩﺓ‬‫ ﺍﻟﻬﻴﻜﻠﻴﺔ‬‫ﺍﻟﺘﺤﻠﻴل ﺍﻟﺤﺭﻜﻲ ﺜﻼﺜﻲ ﺍﻷﺒﻌﺎﺩ ﻴﻌﺘﺒﺭﻤﻁﻠﻭﺒﺎ ﻟﻌﺩﺩ ﻜﺒﻴﺭ ﻤﻥ ﺍﻷﻨﻭﺍﻉ ﺍﻟﻤﺨﺘﻠﻔﺔ ﻟﻸﻨﻅﻤﺔ‬
‫ﺓ ﻁﺭﻕ ﻟﺘﺨﻤﻴﻥ ﺘﻭﺯﻴﻊﹺ ﺍﻟﻘﻭﻯﹺ ﺍﻟﺯﻟﺯﺍﻟﻴﺔ‬‫ﺩ‬‫ ﻴﺘﻡ ﺍﻗﺘﺭﺍﺡ ﻋ‬‫ ﺍﻟﺠﺎﻨﺒﻴﺔ‬‫ﺕ ﺍﻟﻘﻭﺓ‬
‫ ﻟﺘﺤﻘﻴﻕ ﻤﺘﻁﻠﺒﺎ ﹸ‬.‫ ﺍﻟﺯﻟﺯﺍﻟﻴﺔ‬‫ﻓﻲ ﺍﻟﻤﻨﺎﻁﻕ‬
‫ﻥ ﺍﻟﺘﺤﻠﻴل ﺍﻟﺤﺭﻜﻲ ﻫﻲ ﺍﻻﺴﺎﺱ ﻓﻲ‬  ‫ ﺍﻥ ﺍﻟﻔﺎﺌﺩﺓ ﺍﻟﺭﺌﻴﺴﻴﺔ ﻹﺴﺘﻌﻤﺎل ﺍﻟﻘﻭﻯ ﺍﻟﻨﺎﺘﺠﺔ ﻤ‬.‫ﻀﻤﻥ ﻫﺫﺓ ﺍﻟﻬﻴﺎﻜل ﻻﻨﺸﺎﺌﻴﺔ‬
ِ‫ﻥ ﺘﺤﻠﻴلِ ﺤﻤل‬ ‫ﻜﹸﻭﻥ ﻤﺨﺘﻠﻑ ﺒﺸﻜل ﻤﻠﺤﻭﻅ ﻋﻥ ﺍﻟﻘﻭﻯ ﺍﻟﻨﺎﺘﺠﺔ ﻤ‬‫ﺩ ﻴ‬ ‫ﻥ ﺍﻟﺘﻭﺯﻴﻊﹺ ﺍﻟﻌﻤﻭﺩﻱﹺ ﻟﻠﻘﻭﻯﹺ ﻗﹶ‬
 ‫ ﺃ‬.‫ﺍﻟﺘﺼﻤﻴﻡ ﺍﻻﻨﺸﺎﺌﻲ‬
.ِ‫ﺴﺎﻜﻥﹺ ﻤﻜﺎﻓﺊ‬
Keywords: Response spectrum analysis, linear dynamic analysis, Non-linear static
analysis, Non-linear dynamic analysis, Equivalent static analysis

* Building and Constriction Engineering Department, University of Technology /Baghdad


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