Flow Chart of seismic design megatnobeamcolumoinssprinmsrily (1)Schematic Diagram (2)Design vahe of shear foree v,-c+T--“+“- ，- (642 -15,1.35,1.2 coeresponding to grade 1.2 and 3 for frame structure gu2-别 6,4 (3)Seismic shear strength checking of joint core 85aaa2nchntorcod Structural wall system (6.39 -,Aa5竖4学）a0 64) 2 2 Design of Element Flexural Strength Shear Strength Flexural Strength Shear Strength The strength of Shear shall be stronger than flexural columns shall be stronger than beams Joint shear strength joint shall be stronger than connected beams and columns Mc,up Mc,low Mb,r Mb,l Vc,up Vb,l Vb,r Nc,up Nc,low Vc,low Vc,low Vc,low Beam Column The strength of Shear shall be stronger than fexual Flow Chart of seismic design 6.4.5 Design of beam-column joints Principle: strong joints-weak members  The design of beam-column joints is primarily aimed at: (i) preserving the integrity of the joint so that the strength and deformation capacity of the connected beams and columns can be developed and substantially maintained. (ii) preventing significant degradation of the joint stiffness due to cracking of the joint and loss of bond between concrete and the longitudinal column and beam reinforcement or anchorage failure of beam reinforcement. (1)Schematic Diagram                c b bo s b s b jb j H h h a h a M V / / 0 1 (5.41)               c b bo s b s bua j H h h a h a M V / / 0 1 1.15 (5.42) (2) Design value of shear force =1.5,1.35, 1.2 corresponding to grade 1, 2 and 3 for frame structure  j (6.42) (6.43) For Grade 1 frame structure at Intensity 9 area, it should also comply with: strong joints - weak members             s h a f A b b V f b h N b s yv svj c j j t j j j RE j 0 1.1 0.5 1    (3) Seismic shear strength checking of joint core          s h a V f b h f A b s j t j j yv svj RE j 0 0.9 1   ( .3 ) j c c j j RE 1 V 0 f b h     (6.39) (6.40) (6.41) For Grade 1 frame structure at Intensity 9 area, it should also comply with: 6.5 Seismic design of reinforced concrete structural walls Structural wall system • Reinforced-concrete structural walls (commonly referred to as shear walls) are being used more and more for resisting earthquake forces, either alone or in conjunction with ductile moment resisting frames. • The reason is that shear walls stiffen a building, and this reduces nonstructural damage