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Abstract
The design of headed bars in interior and exterior beam–column joints to ensure satisfactory seismic anchorage performance has recently become a very important issue. This work investigates the seismic anchorage behavior of headed bars using 12 groups of full-size specimens of exterior and interior beam–column joints and suggests design requirements for headed bars in such joints. On the basis of the experimental investigation, this work comprehended the seismic anchorage behavior of headed bars using full-size specimens of exterior and interior beam–column joints and suggested design requirements for headed bars in such joints. Additionally, the application of headed bars with spliced and butted types on interior beam–column joints is also proved in this work. Therefore, based on the experimental results, the minimal required net spacing of headed bars can be set at 2.2 db, instead of 4.0 db, for seismic designs, and the minimal required anchorage length in ACI 318-11 for non-seismic design members can be used in seismic members.
Published Version
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