不同耗能形式对交错桁架钢结构体系的影响分析-建筑与土木工程专业毕业论文.docx

不同耗能形式对交错桁架钢结构体系的影响分析
The influence analysis of different forms of energy dissipation devices upon staggered steel truss framing system
Abstract
At present,domestic steel industry has a lot of pressure on pared to developed countries,steel construction accounts for a small portion of the market in China. The 1 3th Five-Year Plan proposes to develop prefabricated steel truss
structure system has the advantages of better economy,ponent forms and easy to
mass-,seismic performance of staggered steel truss structure system is not very good,because of this,it Can’t be wildly used in high seismic fortification intensity sites,the range of application is research of staggered steel truss structure system started in the 1 860s,and there has been more than 20 years since domestic scholars began tO
study this structure the research of applying different forms of energy dissipation
devices to staggered steel truss structure system is prehensive.
In order to improve the seismic performance of staggered steel truss structure system and promote this structure system,this paper utilized MIDAS/gen software platform,applied Y—shaped eccentrically braced steel frame and viscoelastic damper on Staggered steel truss structure system and study the changes of deformation and work and
conclusions carried out as follows:
(1)Build spatial models of a Y—shaped eccentrically braced staggered-steel truss system and a concentrically braced elastic and elastic—plastic time history analysis. Discuss impacts of Y-shaped eccentric braces upon structural deformations and load of members.
(2)Build CO-working mechanical model of staggered-steel truss system with viscoelastic elastic and elastic-plastic time history differences between controlled and uncontrolled structures in structural deformations and load of
members.
(3)Build CO—working mechanical model of stag