Discuss on Story Drift Limits of Complete Frame-Supported Shear Wall Structure on Vehicle Base
Complete frame-supported shear wall structure on vehicle base is a new form of structure,the value of lateral stiffness at bottom frame is strictly controlled in practical projects,and story drift is supposed to be less than 1/2000 required by relevant design criterion.After the discussion on the foundation,purpose and problem in calculation of controlling story drift at upper shear wall structure and the comparison of large chassis effect on story drift,it suggests that the story drift limits in Guangdong Province Technical specification for concrete structures of tall buildings(DBJ/T 15-92-2021)should be adopted for upper shear wall structure,which is less than 1/450 under frequent earthquakes.The story drift limits of bottom frame and complete frame-supported shear wall damping or isolating structure of non-eight types buildings in two zones should be loosened substantially to 1/450,assuming upper shear wall structure yields before bottom frame does.It's more important to fulfill the reasonable yield mechanism.
base for the vehiclecomplete frame-supported shear wall structureinter-story drift limitdamping and isolating structureyield mechanism
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维普
