Design counseling knowledge: seismic design of frame column stirrups set there?
Seismic design of frame column stirrups set there?
1, stirrups should be enclosed, its ends should be made of 135 ° hooks and hook end of the straight length of not less than 10 times the diameter of the stirrups, and should not be less than 75mm;
2, stirrups limb stirrups encrypted area of distance, level of not more than 200mm, two, three and not more than 20 times greater of 250mm diameter stirrups, four of not more than 300mm. Every single longitudinal reinforcement should be in there are two directions stirrups; when using a combination of hoop reinforcement, reinforcement should be closed immediately hooked hoop and longitudinal reinforcement;
3, column stirrups non-encrypted area, the volume stirrup ratio of not less than half of the encrypted area; their stirrups spacing should not exceed two times the encrypted area stirrup spacing, and one or two should not exceed 10 times the vertical bar diameter, three, four longitudinal reinforcement should not exceed 15 times the diameter.
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