3016

2894

كارشناسي ارشد

سازه

اصفهان :دانشگاه صنعتي اصفهان، دانشكده عمران

1384

ده، 154، [II]ص.: مصور، جدول، شكل، نمودار﴿رنگي﴾

فرهاد بهنام فر

عبدالرضا سروقدمقدم

محمدمهدي سعادت پور

1396/01/15

كتابنامه

عمران

مهندسي عمران

ID2894

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

AbstractIt is evident the demolishing and rebuilding all structures to withstand earthquakes is notpossible both practically and economically This is the incentive behind the developmentof practical methods for seismic rehabilitation of structures in different countries Most ofthe related research has been focused on building systems rather than bridges so in thisthesis it is intended to develop practical and precise analysis methods for determining theseismic capacity of existing bridges to act as a complement for the relevant codes ofpractice In this research work the nonlinear static pushover and incremental dynamicanalysis illA methods are used for the above purpose Some 3D models of bridges areconsidered and used with the software sap2000 In pushover method the loading is appliedstatically and in illA some earthquake records are input to the structure The records arethose ofBam Tabas and Manjil Beside the above two analysis the effects of the variationof shear modulus of elastic bearings of bridges with time aging on the seismic capacityare explored Also thermal stressesare calculated for a uniform variation temperature atthe deck and a temperature gradient through the height of the girders Finally it isconcluded that the bridges under study do not perform well under seismic load thisbridges are currently under operation in Tehran Also thermal analysis shows that aconsiderable effect on the capacity of the bridges practical cases t d Iu li l Lf J

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