Reinforcement calculation
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This post was last edited by anguanghui1 on 2018-2-22 17:23 1. I have a question, how is the outer diameter of the reinforcement circle determined for the following equal-area reinforcement? Thanks! 2. Another question is: The formula for equal area reinforcement can only verify whether reinforcement is feasible. For cases where the branch pipes on a large pipe are relatively small, reinforcement is not actually required. So how to determine the maximum size of the branch pipe connection without reinforcement on the main pipe? The maximum size of the branch pipe does not need to be reinforced, thank you!
1. I would like to ask a question, how is the outer diameter of the reinforcing ring determined for the following equal-area reinforcement? Thanks! Normally, the outer diameter of the reinforcing ring (reinforcing plate) can be 2 times the outer diameter of the branch pipe ； 2. Another question is: The formula for equal area reinforcement can only verify whether reinforcement is feasible. For cases where the branch pipes on a large pipe are relatively small, reinforcement is not actually required. So how to determine the maximum size of the branch pipe connection without reinforcement on the main pipe? The maximum size of the branch pipe does not need to be reinforced, thank you! Since the additional stress caused by small-sized branch pipes under certain conditions is not large, reinforcement calculations do not need to be made, and reinforcement measures do not need to be taken. For welded branch pipes, GB/T 20801 stipulates that reinforcement is not required when one of the following conditions is met:: ①. The nominal diameter of the branch pipe does not exceed DN50 ； ②.Db/Dh≤1/4 ； (Db is the outer diameter of the branch pipe, Dh is the outer diameter of the main pipe)