2015/10/25 Key lessons from 5.12 earthquake mnehan oher 广hhord 4.1 Frame Structures 4.1.3 Seismic Grading 4.1.3 Seismic Grading Conceptual Design for structures Seismic Grading for RC Structures Seismic Grading for Steel Structures Seismic grading for reinforced concrete buildings able6.12inGB50011-2010) (Table6.1.2inGB50011-2010) n地 be continued 本课件版权归作者所有，仅供个人学习使用，请勿转载。 6」 2015/10/25 6 十六、重视角柱、加腋梁柱的抗震设计 16. Seismic design of columns, weak points. Key lessons from 5.12 earthquake • Corner columns often behave worse than other exterior and interior columns • Column’s destroy were more occurred and more severe than beam’s. • Complete failure in members detailed for ductility is rare. Therefore all elements must be detailed so that they can respond to strong earthquakes in a ductile fashion. • Non-ductile modes such as shear and bond failures must be avoided. • A high degree of structural redundancy should be provided.  4.1.3 Seismic Grading  Seismic Grading for RC Structures  Seismic Grading for Steel Structures 4.1 Frame Structures 4.1.3 Seismic Grading Conceptual Design for structures  Height  Structural System  Seismic Fortification Intensity Grading  Requirements in Design  Configuration  Calculation  Details 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) 本课件版权归作者所有，仅供个人学习使用，请勿转载