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《Journal of Dalian University of Technology》 2009-05
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Comparison of ″strong column-weak beam″ design between Chinese seismic design code GB 50010—2001 and Eurocode EN 1998-1

CHE Yi,YOU JieState Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China  
Field investigation on seismic damage of multi-story reinforced concrete(RC) frames after Wenchuan earthquake on May 12,2008 showed that columns were more feasible to damage than beams,leading to an unexpected weak-column failure mechanism.A comparison of code provisions with regard to implementing design objectives of ″strong column-weak beam″ between Chinese seismic design code GB 50010—2001 and Eurocode EN 1998-1 from many aspects,such as seismic performance requirements,seismic action level,modeling of structure,seismic design and detailing of structural members is presented.It is shown that inadequate requirements on local ductility of beams and columns which are assigned to seismic class 1 to 3,as well as the insufficient consideration of contributions of the floor to stiffness and flexural resistance of the beam are the major causes to the weak-column failure mechanism of RC frames in the earthquake.
【Fund】: “九七三”国家重点基础研究发展计划资助项目(2007CB714202);; “十一五”国家科技支撑计划资助项目(2006BAJ01B6-06)
【CateGory Index】: TU375.4
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