HYBRID BEAM

PROBLEM TO BE SOLVED: To provide a hybrid beam that is advantageous in suppressing shear cracking of a reinforced concrete beam part and damaging of a header part of the reinforced concrete beam part when a giant earthquake occurs.SOLUTION: A hybrid beam 10 is laid between mutually opposed reinforced concrete columns 12. The hybrid beam 10 includes a steel-frame beam part 20 as a center part of a steel frame 16 laid between the reinforced concrete columns 12, and also includes a reinforced concrete beam part 22, formed by covering the steel frame 16 with reinforced concrete, at both end parts of the steel frame beam part 20. In the reinforced concrete beam part 22, a plurality of lateral reinforcement bars 26 such as rib bars are embedded at intervals in the lengthwise direction of the steel frame 16. In both lengthwise end parts of the reinforced concrete beam part 22, an integrated reinforcement bar part 28 having the lateral reinforcement bars 26 closely arranged is embedded. Fiber-reinforced concrete is used as concrete C which constitutes the reinforced concrete beam part 22.