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A platform for research: civil engineering, architecture and urbanism
Post-tensioned bonded co-tensioned prefabricated prestressed concrete perforated beam frame structure connected by UHPC (Ultra High Performance Concrete) and design and construction method of post-tensioned bonded co-tensioned prefabricated prestressed concrete perforated beam frame structure
The invention discloses a post-tensioned bonded co-tensioned prefabricated prestressed concrete perforated beam frame structure connected by UHPC (Ultra High Performance Concrete). The post-tensioned bonded co-tensioned prefabricated prestressed concrete perforated beam frame structure comprises a prefabricated concrete upper column, a prefabricated concrete lower column, a post-tensioned bonded co-tensioned prefabricated prestressed concrete perforated superposed beam, a UHPC node core area and a superposed plate. The upper longitudinal main reinforcements extend out of the bottom surface of the prefabricated upper column and are directly anchored in the UHPC node core area, the lower longitudinal main reinforcements extend out of the top surface of the prefabricated lower column and are directly anchored in the UHPC node core area, and the common reinforcements and the pre-tensioned prestressed reinforcements extend out of the end surface of the prefabricated pre-tensioned prestressed concrete perforated beam and are directly anchored or anchored in the UHPC node core area in a bending manner; the post-tensioned bonded prestressed tendon is arranged in the corrugated pipe pre-buried in the prefabricated pre-tensioned prestressed concrete perforated beam component and penetrates through the beam laminated layer and the corrugated pipe pre-buried in the UHPC node core area, the two ends of the post-tensioned bonded prestressed tendon extend out of the UHPC node core area, and the two ends of the post-tensioned bonded prestressed tendon are fixedly provided with a clamp and an anchorage device respectively. 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连接的后张有粘结共张预制预应力混凝土开孔梁框架结构，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开孔叠合梁、UHPC节点核心区和叠合板。所述上纵向主筋伸出预制上柱底面并直接锚固在UHPC节点核心区内，下纵向主筋伸出预制下柱顶面并直接锚固在UHPC节点核心区内，普通钢筋和先张预应力筋伸出预制先张预应力混凝土开孔梁端面并直接锚固或弯折锚固在UHPC节点核心区内，后张有粘结的预应力筋设置在所述预制先张预应力混凝土开孔梁构件中预埋的波纹管内，并穿过梁叠合层和UHPC节点核心区中预埋的波纹管且两端伸出所述UHPC节点核心区之外，其两端分别固定设置有夹具和锚具。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。
Post-tensioned bonded co-tensioned prefabricated prestressed concrete perforated beam frame structure connected by UHPC (Ultra High Performance Concrete) and design and construction method of post-tensioned bonded co-tensioned prefabricated prestressed concrete perforated beam frame structure
The invention discloses a post-tensioned bonded co-tensioned prefabricated prestressed concrete perforated beam frame structure connected by UHPC (Ultra High Performance Concrete). The post-tensioned bonded co-tensioned prefabricated prestressed concrete perforated beam frame structure comprises a prefabricated concrete upper column, a prefabricated concrete lower column, a post-tensioned bonded co-tensioned prefabricated prestressed concrete perforated superposed beam, a UHPC node core area and a superposed plate. The upper longitudinal main reinforcements extend out of the bottom surface of the prefabricated upper column and are directly anchored in the UHPC node core area, the lower longitudinal main reinforcements extend out of the top surface of the prefabricated lower column and are directly anchored in the UHPC node core area, and the common reinforcements and the pre-tensioned prestressed reinforcements extend out of the end surface of the prefabricated pre-tensioned prestressed concrete perforated beam and are directly anchored or anchored in the UHPC node core area in a bending manner; the post-tensioned bonded prestressed tendon is arranged in the corrugated pipe pre-buried in the prefabricated pre-tensioned prestressed concrete perforated beam component and penetrates through the beam laminated layer and the corrugated pipe pre-buried in the UHPC node core area, the two ends of the post-tensioned bonded prestressed tendon extend out of the UHPC node core area, and the two ends of the post-tensioned bonded prestressed tendon are fixedly provided with a clamp and an anchorage device respectively. 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连接的后张有粘结共张预制预应力混凝土开孔梁框架结构，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开孔叠合梁、UHPC节点核心区和叠合板。所述上纵向主筋伸出预制上柱底面并直接锚固在UHPC节点核心区内，下纵向主筋伸出预制下柱顶面并直接锚固在UHPC节点核心区内，普通钢筋和先张预应力筋伸出预制先张预应力混凝土开孔梁端面并直接锚固或弯折锚固在UHPC节点核心区内，后张有粘结的预应力筋设置在所述预制先张预应力混凝土开孔梁构件中预埋的波纹管内，并穿过梁叠合层和UHPC节点核心区中预埋的波纹管且两端伸出所述UHPC节点核心区之外，其两端分别固定设置有夹具和锚具。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。
Post-tensioned bonded co-tensioned prefabricated prestressed concrete perforated beam frame structure connected by UHPC (Ultra High Performance Concrete) and design and construction method of post-tensioned bonded co-tensioned prefabricated prestressed concrete perforated beam frame structure
一种UHPC连接的后张有粘结共张预制预应力混凝土开孔梁框架结构及其设计、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