Post-tensioned prestressed prefabricated type concrete composite beam reinforcing steel bar structure and design method thereof
A post-tensioning prestressing and prestressing tendon technology, applied in truss structures, structural elements, joists, etc., can solve the problems of low construction efficiency, poor seismic performance, complex structure, etc., to facilitate on-site installation and improve seismic performance. Performance, concrete damage reduction effect
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[0044] Such as Figure 1-12 As shown, this post-tensioned prestressed assembled concrete composite beam reinforcement structure includes beam lower reinforcement, waist bar 5, beam upper reinforcement, stirrup 7 and prestressed tendons 6; The bottom of the prefabricated layer 2.1 of the beam 2, and the lower reinforcement of the beam includes the lower structural reinforcement 3a of the beam; the lower structural reinforcement 3a of the beam is distributed on both sides of the cross section of the prefabricated layer 2.1, and at least two are respectively arranged on each side; The lower structural steel bars 3a are arranged along the longitudinal length of the prefabricated layer 2.1; the waist bars 5 have two groups, which are respectively arranged on the left and right sides of the precast layer 2.1; wherein, each group of waist bars 5 is arranged vertically at intervals; the upper part of the beam The steel bars are located on the top of the post-cast laminated layer 2.2 o...
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