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A platform for research: civil engineering, architecture and urbanism
Cast-in-place square column prefabricated square beam concrete frame joint
The invention discloses a cast-in-place square column prefabricated square beam concrete frame joint. The cast-in-place square column prefabricated square beam concrete frame joint comprises a cast-in-place concrete square column, a plurality of prefabricated concrete square beams, a plurality of beam bottom longitudinal bars, a plurality of unbonded anti-buckling sleeves, a plurality of beam toplongitudinal bars and an upper cast-in-place areas of a plurality of composite square beams. The cast-in-place concrete square column is connected with the two prefabricated concrete square beams through poured concrete, the upper cast-in-place area of the composite square beams is connected with the prefabricated concrete square beams through poured concrete, the plurality of beam bottom longitudinal bars penetrate through the unbonded anti-buckling sleeves, the plurality of unbonded anti-buckling sleeves are located at the bottoms of the prefabricated concrete square beams, and the pluralityof beam top longitudinal bars are positioned in the upper cast-in-place area of the composite square beams and the cast-in-place concrete square column. According to the cast-in-place square column prefabricated square beam concrete frame joint, the free elongation distance of the steel bar is lengthened by using the unbonded anti-buckling sleeves at the ends of the prefabricated composite squarebeams, so that the length of the plastic hinge is increased, the rotation ductility of the end of the square beam is improved, and the problem that the steel bars are buckled in the sleeves when thestructure is subjected to a reciprocating load is solved.
本发明公开一种现浇方柱预制方梁混凝土框架节点，包括现浇混凝土方柱，多个预制混凝土方梁，多个梁底部纵筋，多个无粘结防屈曲套筒，多个梁顶部纵筋，多个叠合方梁的上部现浇区域。现浇混凝土方柱与两个预制混凝土方梁通过浇筑混凝土连接，叠合方梁的上部现浇区域与预制混凝土方梁通过浇筑混凝土连接，多个梁底部纵筋穿过无粘结防屈曲套筒，多个无粘结防屈曲套筒位于预制混凝土方梁底部，多个梁顶部纵筋位于叠合方梁的上部现浇区域和现浇混凝土方柱。本发明通过在预制叠合方梁端使用无粘结防屈曲套筒加长钢筋的自由伸长距离，从而增大塑性铰长度，进而改善方梁端转动延性，并且克服了结构在受到往复荷载时，钢筋在套筒内发生屈曲的问题。
Cast-in-place square column prefabricated square beam concrete frame joint
The invention discloses a cast-in-place square column prefabricated square beam concrete frame joint. The cast-in-place square column prefabricated square beam concrete frame joint comprises a cast-in-place concrete square column, a plurality of prefabricated concrete square beams, a plurality of beam bottom longitudinal bars, a plurality of unbonded anti-buckling sleeves, a plurality of beam toplongitudinal bars and an upper cast-in-place areas of a plurality of composite square beams. The cast-in-place concrete square column is connected with the two prefabricated concrete square beams through poured concrete, the upper cast-in-place area of the composite square beams is connected with the prefabricated concrete square beams through poured concrete, the plurality of beam bottom longitudinal bars penetrate through the unbonded anti-buckling sleeves, the plurality of unbonded anti-buckling sleeves are located at the bottoms of the prefabricated concrete square beams, and the pluralityof beam top longitudinal bars are positioned in the upper cast-in-place area of the composite square beams and the cast-in-place concrete square column. According to the cast-in-place square column prefabricated square beam concrete frame joint, the free elongation distance of the steel bar is lengthened by using the unbonded anti-buckling sleeves at the ends of the prefabricated composite squarebeams, so that the length of the plastic hinge is increased, the rotation ductility of the end of the square beam is improved, and the problem that the steel bars are buckled in the sleeves when thestructure is subjected to a reciprocating load is solved.
本发明公开一种现浇方柱预制方梁混凝土框架节点，包括现浇混凝土方柱，多个预制混凝土方梁，多个梁底部纵筋，多个无粘结防屈曲套筒，多个梁顶部纵筋，多个叠合方梁的上部现浇区域。现浇混凝土方柱与两个预制混凝土方梁通过浇筑混凝土连接，叠合方梁的上部现浇区域与预制混凝土方梁通过浇筑混凝土连接，多个梁底部纵筋穿过无粘结防屈曲套筒，多个无粘结防屈曲套筒位于预制混凝土方梁底部，多个梁顶部纵筋位于叠合方梁的上部现浇区域和现浇混凝土方柱。本发明通过在预制叠合方梁端使用无粘结防屈曲套筒加长钢筋的自由伸长距离，从而增大塑性铰长度，进而改善方梁端转动延性，并且克服了结构在受到往复荷载时，钢筋在套筒内发生屈曲的问题。
Cast-in-place square column prefabricated square beam concrete frame joint
一种现浇方柱预制方梁混凝土框架节点
HUANG YUAN (author) / TAO YUXUAN (author) / DENG LU (author) / ZHOU YUN (author)
2020-11-24
Patent
Electronic Resource
Chinese
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