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A platform for research: civil engineering, architecture and urbanism
UHPC (Ultra High Performance Concrete) connected co-tensioned prefabricated prestressed concrete frame structure system with bonded post-tensioning and design and construction method of UHPC connected co-tensioned prefabricated prestressed concrete frame structure system
The invention discloses a UHPC (Ultra High Performance Concrete) connected co-tensioning prefabricated prestressed concrete frame structure system with a bonded post-tensioning function. The UHPC connected co-tensioning prefabricated prestressed concrete frame structure system comprises a prefabricated concrete upper column, a prefabricated concrete lower column, a co-tensioning prefabricated prestressed concrete superposed beam with a bonded post-tensioning function, a UHPC node core area and a superposed plate. And the upper longitudinal main reinforcements, the lower longitudinal main reinforcements, the common reinforcements and the pre-tensioned prestressed reinforcements are directly anchored or bent and anchored in the UHPC node 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 use of the pre-tensioned prestressed tendons can realize less support or no support in the construction of the precast beam, and the secondary post-tensioning bonding can improve the bearing capacity of the beam and enhance the overall performance of the structure.
本发明公开了一种UHPC连接的后张有粘结的共张预制预应力混凝土框架结构体系，包括预制混凝土上柱、预制混凝土下柱、后张有粘结的共张预制预应力混凝土叠合梁、UHPC节点核心区和叠合板。所述上纵向主筋、下纵向主筋、普通钢筋和先张预应力筋均直接锚固或弯折锚固在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。先张预应力筋的使用可实现预制梁施工少支撑或免支撑，二次后张有粘结可提高梁的承载力，增强结构整体性能。
UHPC (Ultra High Performance Concrete) connected co-tensioned prefabricated prestressed concrete frame structure system with bonded post-tensioning and design and construction method of UHPC connected co-tensioned prefabricated prestressed concrete frame structure system
The invention discloses a UHPC (Ultra High Performance Concrete) connected co-tensioning prefabricated prestressed concrete frame structure system with a bonded post-tensioning function. The UHPC connected co-tensioning prefabricated prestressed concrete frame structure system comprises a prefabricated concrete upper column, a prefabricated concrete lower column, a co-tensioning prefabricated prestressed concrete superposed beam with a bonded post-tensioning function, a UHPC node core area and a superposed plate. And the upper longitudinal main reinforcements, the lower longitudinal main reinforcements, the common reinforcements and the pre-tensioned prestressed reinforcements are directly anchored or bent and anchored in the UHPC node 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 use of the pre-tensioned prestressed tendons can realize less support or no support in the construction of the precast beam, and the secondary post-tensioning bonding can improve the bearing capacity of the beam and enhance the overall performance of the structure.
本发明公开了一种UHPC连接的后张有粘结的共张预制预应力混凝土框架结构体系，包括预制混凝土上柱、预制混凝土下柱、后张有粘结的共张预制预应力混凝土叠合梁、UHPC节点核心区和叠合板。所述上纵向主筋、下纵向主筋、普通钢筋和先张预应力筋均直接锚固或弯折锚固在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。先张预应力筋的使用可实现预制梁施工少支撑或免支撑，二次后张有粘结可提高梁的承载力，增强结构整体性能。
UHPC (Ultra High Performance Concrete) connected co-tensioned prefabricated prestressed concrete frame structure system with bonded post-tensioning and design and construction method of UHPC connected co-tensioned prefabricated prestressed concrete frame structure system
一种UHPC连接的后张有粘结的共张预制预应力混凝土框架结构体系及其设计、施工方法
XIONG XUEYU (author) / FENG CHUANSHAN (author) / SHEN TUFU (author) / LIU JU (author) / XIE YIFAN (author)
2022-12-30
Patent
Electronic Resource
Chinese
| European Patent Office | 2022
| European Patent Office | 2022
| European Patent Office | 2022