Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Novel large-span prestressed hybrid connection node segmental beam frame and construction method
The invention provides a novel large-span prestressed hybrid connection node segmental beam frame and a construction method. The frame comprises prefabricated columns, prefabricated assembled segmental beams, prestressed tendons, beam midspan steel bars and node connecting area steel bars. A prestressed tendon hole channel is reserved in the node area of the prefabricated column. An upper steel bar hole channel and a lower steel bar hole channel are pre-buried in the node area of the prefabricated column. The prefabricated assembly segmental beams are single-span prefabricated prestressed concrete beam segmental beams. The device is arranged at the beam bottom in the beam span, and generation and development of cracks in the beam span can be effectively controlled. A prestressed tendon bonding section with a certain length is arranged at the midspan position so as to prevent the steel strand from being integrally softened and losing efficacy in a fire disaster, and it can also be guaranteed that the beam midspan control section still has a certain bearing capacity once the prestressed tendon anchoring failure occurs at the beam end. And the beam end joint part can be poured by adopting fiber concrete or ECC concrete, so that the anti-cracking performance of the beam end is improved.
发明提供一种新型大跨度预应力混合连接节点节段梁框架及施工方法。该框架包括预制柱、预制拼装节段梁、预应力筋、梁跨中钢筋和节点连接区钢筋。所述预制柱在节点区域预留有预应力筋孔道。所述预制柱在节点区域预埋有上部、下部钢筋孔道。所述预制拼装节段梁为单跨预制预应力混凝土梁节段梁。在梁跨中布置在梁底，可以有效控制梁跨中的裂缝产生和发展。在跨中位置设置一定长度的预应力筋有粘结段以防止钢绞线在火灾中出现整体软化失效，也能保证梁端一旦出现预应力筋锚固失效时，梁跨中控制截面仍然具备一定的承载力。梁端接合部可采用纤维混凝土或ECC混凝土浇筑，以提高梁端抗裂性能。
Novel large-span prestressed hybrid connection node segmental beam frame and construction method
The invention provides a novel large-span prestressed hybrid connection node segmental beam frame and a construction method. The frame comprises prefabricated columns, prefabricated assembled segmental beams, prestressed tendons, beam midspan steel bars and node connecting area steel bars. A prestressed tendon hole channel is reserved in the node area of the prefabricated column. An upper steel bar hole channel and a lower steel bar hole channel are pre-buried in the node area of the prefabricated column. The prefabricated assembly segmental beams are single-span prefabricated prestressed concrete beam segmental beams. The device is arranged at the beam bottom in the beam span, and generation and development of cracks in the beam span can be effectively controlled. A prestressed tendon bonding section with a certain length is arranged at the midspan position so as to prevent the steel strand from being integrally softened and losing efficacy in a fire disaster, and it can also be guaranteed that the beam midspan control section still has a certain bearing capacity once the prestressed tendon anchoring failure occurs at the beam end. And the beam end joint part can be poured by adopting fiber concrete or ECC concrete, so that the anti-cracking performance of the beam end is improved.
发明提供一种新型大跨度预应力混合连接节点节段梁框架及施工方法。该框架包括预制柱、预制拼装节段梁、预应力筋、梁跨中钢筋和节点连接区钢筋。所述预制柱在节点区域预留有预应力筋孔道。所述预制柱在节点区域预埋有上部、下部钢筋孔道。所述预制拼装节段梁为单跨预制预应力混凝土梁节段梁。在梁跨中布置在梁底，可以有效控制梁跨中的裂缝产生和发展。在跨中位置设置一定长度的预应力筋有粘结段以防止钢绞线在火灾中出现整体软化失效，也能保证梁端一旦出现预应力筋锚固失效时，梁跨中控制截面仍然具备一定的承载力。梁端接合部可采用纤维混凝土或ECC混凝土浇筑，以提高梁端抗裂性能。
Novel large-span prestressed hybrid connection node segmental beam frame and construction method
一种新型大跨度预应力混合连接节点节段梁框架及施工方法
JIAN BIN (Autor:in) / HU ZHOU (Autor:in) / HONG HAISEN (Autor:in) / CHEN XIANG (Autor:in) / LI PENGCHENG (Autor:in)
06.12.2024
Patent
Elektronische Ressource
Chinesisch
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