2012/11/22 The appropriate maximum height for R/C buildings(m) Seismic grading for reinforced concrete buildings Table6.1.1inGB50011-2010) (able6.1.2inGB50011-2010) Notes:the heightn()is thevaluelistedn be continued (Table6.1.2inGB50011-2010) 6.4 Seism design of RC frames 5 Earthquake action and responses The Min Value of story shear force Three kinds of Cakulation method Base Shear Method all be qu thcbn0thhartoreoferentareyof 2012/11/22 5 The appropriate maximum height for R/C buildings (m) (Table 6.1.1 in GB50011-2010) Notes: the height in () is the value listed in GB 50011-2008 Structure Types System Seismic Fortification Intensity 6 7 8 (0.2g) 8 (0.3g) 9 Frame System 60 50 (55) 40 (45) 35 24 (25) Frame-Wall System 130 120 100 80 50 Structural Wall System 140 120 100 80 60 Frame supported Wall System 120 100 80 50 N.A Frame- Tube System 150 130 100 90 70 Tube in Tube System 180 150 120 100 80 Slab-Column and Wall System 80(40) 70(35) 55(30) 40 N.A Seismic grading for reinforced concrete buildings (Table 6.1.2 in GB50011-2010) Types of structure Seismic fortification intensity 6 7 8 9 Fram structure Height (m) ≤24 >24 ≤24 >24 ≤24 >24 ≤24 Frames 4th 3rd 3rd 2nd 2nd 1st 1st Large span frames 3rd 2nd 1st 1st Wall￾Frame structure Height (m) ≤60 >60 ≤24 25~60 >60 ≤24 25~60 >60 ≤24 25~60 Frames 4th 3rd 4th 3rd 2nd 3rd 2nd 1st 2nd 1st Structural walls 3rd 3rd 2nd 2nd 1st 1st Structural wall structure Height (m) ≤80 >80 ≤24 25~80 >80 ≤24 25~80 >80 ≤24 25~60 Structural walls 4th 3rd 4th 3rd 2nd 3rd 2nd 1st 2nd 1st be continued Types of structure Seismic fortification intensity 6 7 8 9 Frame - supported wall structure Height (m) ≤80 >80 ≤24 25~ 80 >80 ≤24 25~ 80 Struc￾tural walls General 4th 3rd 4th 3rd 2nd 3rd 2nd Streng￾thening 3rd 2nd 3rd 2nd 1stI 2nd 1st Frames that supporting walls 2nd 2nd 1st 1st Framed-tube structure Frame 3rd 2nd 1st 1st Tube 2nd 2nd 1st 1st Tube in tube structure Exterior tube 3rd 2nd 1st 1st Interior tube 3rd 2nd 1st 1st Slab-column￾wall structure Height (m) ≤35 >35 ≤35 >35 ≤35 >35 Columns 3rd 2nd 2nd 2nd 1st Walls 2nd 2nd 2nd 1st 2nd 1st (Table 6.1.2 in GB50011-2010) Seismic design flow chart 6.4 Seismic design of RC frames Earthquake action and responses  22 Three kinds of Calculation method • Base Shear Method • Response Spectrum Method • Time History Analysys Method To get the lateral force to every storey of the building struture, then To get the shear force of every storey of the building struture The Min Value of story shear force  Determination of story shear force  (GB 50011-2010, 5.2.5) The horizontal seismic shear force at each floor level of structure shall be comply with the requirement of the following equations:   n j i Veki  Gj 6 7 8 9 Structures with obvious torsion effect or fundermental period is less than 3.5s 0.008 0.016 (0.024) 0.032 (0.048) 0.064 Structures with fundermental period greater than 5s 0.006 0.012 (0.018) 0.024 (0.036) 0.048