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A platform for research: civil engineering, architecture and urbanism
UHPC (Ultra High Performance Concrete) connected double-post-tensioned prefabricated prestressed concrete perforated beam frame structure system and design and construction method thereof
The invention discloses a double-post-tensioned prefabricated prestressed concrete perforated beam frame structure system connected by UHPC (Ultra High Performance Concrete). The double-post-tensioned prefabricated prestressed concrete perforated beam frame structure system comprises a prefabricated concrete upper column, a prefabricated concrete lower column, a double-post-tensioned prefabricated prestressed concrete perforated superposed beam, a UHPC node core area and a superposed plate. The upper longitudinal main reinforcements, the lower longitudinal main reinforcements, the common reinforcements and the first post-tensioned prestressed reinforcements are all directly anchored in the UHPC joint core area. The structural system is convenient and rapid in site construction, improves the component installation efficiency, can greatly reduce the anchoring length of the steel bars, greatly reduce the use amount of stirrups in a joint core area, avoid crowding of the steel bars in the joint core area, reduce the section height of the components, reduce the self weight, and improve the anti-cracking performance and the self-recovery performance of the components; therefore, the anti-seismic performance of the whole frame structure is improved. The double-post-tensioning design can be reasonably designed according to the requirements of different spans, different loads, different seismic intensities and the like, the cost is reduced, and the use requirements are met.
本发明公开了一种UHPC连接的双后张预制预应力混凝土开孔梁框架结构体系，包括预制混凝土上柱、预制混凝土下柱、双后张预制预应力混凝土开孔叠合梁、UHPC节点核心区和叠合板。所述上纵向主筋、下纵向主筋、普通钢筋和后张预应力筋一均直接锚固在UHPC节点核心区内。该结构体系不仅现场施工方便快速、提高构件安装效率，而且既能大幅度减少钢筋锚固长度，大幅减少节点核心区箍筋用量，避免节点核心区钢筋拥挤，又能减小构件截面高度，减轻自重、提高构件抗裂性能和自恢复性能，从而改善整体框架结构的抗震性能。双后张设计可根据不同跨度、不同荷载、不同地震烈度等需求进行合理设计，减少成本，满足使用要求。
UHPC (Ultra High Performance Concrete) connected double-post-tensioned prefabricated prestressed concrete perforated beam frame structure system and design and construction method thereof
The invention discloses a double-post-tensioned prefabricated prestressed concrete perforated beam frame structure system connected by UHPC (Ultra High Performance Concrete). The double-post-tensioned prefabricated prestressed concrete perforated beam frame structure system comprises a prefabricated concrete upper column, a prefabricated concrete lower column, a double-post-tensioned prefabricated prestressed concrete perforated superposed beam, a UHPC node core area and a superposed plate. The upper longitudinal main reinforcements, the lower longitudinal main reinforcements, the common reinforcements and the first post-tensioned prestressed reinforcements are all directly anchored in the UHPC joint core area. The structural system is convenient and rapid in site construction, improves the component installation efficiency, can greatly reduce the anchoring length of the steel bars, greatly reduce the use amount of stirrups in a joint core area, avoid crowding of the steel bars in the joint core area, reduce the section height of the components, reduce the self weight, and improve the anti-cracking performance and the self-recovery performance of the components; therefore, the anti-seismic performance of the whole frame structure is improved. The double-post-tensioning design can be reasonably designed according to the requirements of different spans, different loads, different seismic intensities and the like, the cost is reduced, and the use requirements are met.
本发明公开了一种UHPC连接的双后张预制预应力混凝土开孔梁框架结构体系，包括预制混凝土上柱、预制混凝土下柱、双后张预制预应力混凝土开孔叠合梁、UHPC节点核心区和叠合板。所述上纵向主筋、下纵向主筋、普通钢筋和后张预应力筋一均直接锚固在UHPC节点核心区内。该结构体系不仅现场施工方便快速、提高构件安装效率，而且既能大幅度减少钢筋锚固长度，大幅减少节点核心区箍筋用量，避免节点核心区钢筋拥挤，又能减小构件截面高度，减轻自重、提高构件抗裂性能和自恢复性能，从而改善整体框架结构的抗震性能。双后张设计可根据不同跨度、不同荷载、不同地震烈度等需求进行合理设计，减少成本，满足使用要求。
UHPC (Ultra High Performance Concrete) connected double-post-tensioned prefabricated prestressed concrete perforated beam frame structure system and design and construction method thereof
一种UHPC连接的双后张预制预应力混凝土开孔梁框架结构体系及其设计、施工方法
XIONG XUEYU (author) / FENG CHUANSHAN (author) / XIONG BIN (author) / CHEN JINGBIN (author)
2022-12-30
Patent
Electronic Resource
Chinese
| European Patent Office | 2022
| European Patent Office | 2022