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Design method of SCWB (strong column and weak beam) energy-dissipating concrete frame structure
The invention discloses a design method of an SCWB (strong column and weak beam) energy-dissipating concrete frame structure. The method is characterized in that the rigidity of frame columns is controlled to be never lower than that of beams by a column and connected beam linear rigidity ratio method, column-beam arrangement and sectional size are regulated via structural arrangement, the frame column and connected beam linear rigidity ratio i/i is made greater than 1.0 just by adjusting the column-beam arrangement and the sectional size during engineering design, b is less than b, H/h and lb/h is not less than 4, column deformation and great clefts are avoided occurring to the column ends earlier than beam due to the rigidity of the frame columns being less than that of the beams, the columns are controlled to be stronger than the beams in terms of beam-column rigidity, the problem that the columns experience early hinge exposure by cracking due to low rigidity and great deformation is solved, the linear rigidity of the beams is made less than that of the columns by limiting the height of the beams, beam deformation and cracking chances are increased, the span-depth ratio l/h of the beams is controlled to be not less than 4, if beam strength computing is unsatisfactory, the sectional reinforcement is made meeting the strength requirement by improving material strength and enlarging the number of width-wise stirrups, ductility of the frame beams is improved after cracking, and the ability of the frame beams to dissipate energy to resist plastic deformation in case of a strong earthquake is improved. The design method has the advantages that formation of the strong column and weak beam energy-dissipating frame is benefited and no collapsing with strong earthquake is guaranteed.
Design method of SCWB (strong column and weak beam) energy-dissipating concrete frame structure
The invention discloses a design method of an SCWB (strong column and weak beam) energy-dissipating concrete frame structure. The method is characterized in that the rigidity of frame columns is controlled to be never lower than that of beams by a column and connected beam linear rigidity ratio method, column-beam arrangement and sectional size are regulated via structural arrangement, the frame column and connected beam linear rigidity ratio i/i is made greater than 1.0 just by adjusting the column-beam arrangement and the sectional size during engineering design, b is less than b, H/h and lb/h is not less than 4, column deformation and great clefts are avoided occurring to the column ends earlier than beam due to the rigidity of the frame columns being less than that of the beams, the columns are controlled to be stronger than the beams in terms of beam-column rigidity, the problem that the columns experience early hinge exposure by cracking due to low rigidity and great deformation is solved, the linear rigidity of the beams is made less than that of the columns by limiting the height of the beams, beam deformation and cracking chances are increased, the span-depth ratio l/h of the beams is controlled to be not less than 4, if beam strength computing is unsatisfactory, the sectional reinforcement is made meeting the strength requirement by improving material strength and enlarging the number of width-wise stirrups, ductility of the frame beams is improved after cracking, and the ability of the frame beams to dissipate energy to resist plastic deformation in case of a strong earthquake is improved. The design method has the advantages that formation of the strong column and weak beam energy-dissipating frame is benefited and no collapsing with strong earthquake is guaranteed.
Design method of SCWB (strong column and weak beam) energy-dissipating concrete frame structure
WANG YINGLIN (author) / JING HONGXIANG (author) / FAN XIURONG (author) / ZHANG DING (author) / QI YONGXIANG (author)
2015-09-23
Patent
Electronic Resource
English
IPC:
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
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