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040 _aEG-GiCUC
_beng
_cEG-GiCUC
041 0 _aeng
049 _aDeposite
097 _aM.Sc
099 _aCai01.13.05.M.Sc.2015.Ma.I
100 0 _aMasood Majed Mohammed Irheem
245 1 0 _aInvestigating the effect of boundary conditions on the evaluation of seismic response modification factor of steel frames /
_cMasood Majed Mohammed Irheem ; Supervised Walid A. Attia
246 1 5 _aدراسة تأثير نو الدعامات على حساب قيمة معامل التصحيح الزلزالي للإطارات المعدنية
260 _aCairo :
_bMasood Majed Mohammed Irheem ,
_c2015
300 _a140 P. :
_bcharts ;
_c30cm
502 _aThesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Civil Engineering
520 _aThis study investigates the effects of boundary conditions as 2support type of column and direction of strong axis of column3 on the response modification factor 2R-factor3 for steel frames. Besides, other parameters as number of bays, story number and position of bracing. All steel frames are designed according to Egyptian Code. Based on the results, for each different boundary condition there is different R value, that{u2019}s mean, the R-factor is unique for each steel frame and depended on stiffness of the frame system; R-factor increases when fundamental period is decreased and braced frames have value smaller than un-braced frames. Types of support of column have high effect on fundamental period for un-braced frames and less for braced frames. Direction of column has effect on R-factor for both types of frames. Egyptian Code gives limited R-value for steel frames comparing to this study. The minimum value of R-factor for each frame in this study is close to the value in the Code, which means the Code is more conservative
530 _aIssued also as CD
653 4 _aDuctility reduction value
653 4 _aOverstrength value
653 4 _aResponse modification factors
700 0 _aWalid Abdellatef Attia ,
_eSupervisor
856 _uhttp://172.23.153.220/th.pdf
905 _aNazla
_eRevisor
905 _aSoheir
_eCataloger
942 _2ddc
_cTH
999 _c53394
_d53394