Achieving pin connection in concrete by rebar extension
Achieving pin connection in concrete by rebar extension
(OP)
Hey, by what value shall we embed the beam rebars into exterior columns, so that pin condition is achieved?
I've previously heard that it's (0.1-->0.15 * effective depth), is this true?
I've previously heard that it's (0.1-->0.15 * effective depth), is this true?






RE: Achieving pin connection in concrete by rebar extension
RE: Achieving pin connection in concrete by rebar extension
RE: Achieving pin connection in concrete by rebar extension
1. Will the connection see any load reversal due to lateral load?
2. Has the minimum integrity reinforcement been provided to satisfy local building code?
3. Does the beam to column connection have sufficient strength in shear without much longitudinal reinforcing?
RE: Achieving pin connection in concrete by rebar extension
RE: Achieving pin connection in concrete by rebar extension
The analysis of members is a notional design simplification that cannot be achieved by simply making the structure weak. ACI 318 and similar codes are based on continuous reinforcement, and you cannot discontinue reinforcement except as permitted in the code. All parts of 318 work together, and you cannot use the chapter of flexure and ignore the "details of reinforcement" chapter.
RE: Achieving pin connection in concrete by rebar extension
That being said, the last time I did a connection like that in reinforced concrete I had a note on the drawings to grease the bar (or use some sort of bond breaker) so that the only thing the bar could transfer is shear.
RE: Achieving pin connection in concrete by rebar extension