3338

3195

كارشناسي ارشد

﴿ سازه ﴾

اصفهان : دانشگاه صنعتي اصفهان ، دانشكده عمران

1385

[ شانزده ] ، 119 ، [II] ص. : مصور ، نمودار ، جدول

ص.ع. به فارسي و انگليسي

امير مهدي حلبييان

ساسان عشقي ، فرهاد بهنام فر

مهندسي عمران

ID3195

به فارسي و انگليسي : قابل رؤيت در نسخه ديجيتال

Abstract Near fault ground motions have caused much damage in the vicinity of seismic sources duringrecent earthquakes These ground motions come in large varieties and impose high demands onstructures compared to ordinary ground motions Recordings suggest that near fault groundmotions are characterized by a large high energy pulse This impulsive motion which isparticular to the forward direction is mostly oriented in a direction perpendicular to the fault causing the fault normal component of the motion to be more severe than the fault parallelcomponent The main objective of the present study is to acquire quantitative knowledge on the effects ofNear Fault ground motions on the response of reinforced concrete frame structures To achievethis goal a set of generic R C frame structures with 5 story 10 story and 20 story height are usedto evaluate seismic responses of R C frame structures close to the faults These frame models aredesigned according to the Weak beam Strong column concept and members strengths aretuned such that simultaneous yielding occurs at the beam ends and the column bases under theSRSS shear force pattern The results demonstrated that the story shear force distribution overthe height of the frame structures with a period longer than the pulse period show verydifferently from the frame structures with a shorter period For the frame structures with a periodlonger than the pulse period the distribution of story shear forces over the height of the structurediffer significantly from the design distribution and causes the shear forces in middle stories toreach the story shear capacities very fast and this leads to early yielding in this stories But forthe frame structures with a period shorter than the pulse period the distribution of story shearforces over the height of the structure is relatively close to the design distribution and causes theshear forces in lower stories to reach the story shear capacities first and leads to early yielding inbottom stories

امير مهدي حلبييان

ساسان عشقي ، فرهاد بهنام فر