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Steel-concrete combined high-strength high-ductility pre-stressed bar concrete structure
The steel-concrete combined high-strength and high-ductility pre-stress bar concrete structure comprises a concrete beam main body, the concrete beam main body is a cast-in-place concrete structure after formwork erecting, a reinforcement cage is arranged in the concrete beam main body and comprises a stirrup set, C-shaped steel and NPR pre-stress bars, the stirrup set comprises a plurality of stirrups arranged at intervals, and the C-shaped steel is connected with the NPR pre-stress bars. C-shaped steel is welded to the top of the stirrup set and wraps the top of the concrete beam body, at least one NPR pre-stress rib is arranged in the stirrup set in a penetrating mode, the NPR pre-stress rib is fixedly connected with the stirrup set, the two ends of the NPR pre-stress rib extend out of the concrete beam body, and anchorage devices are arranged at the two ends of the NPR pre-stress rib in a sleeving mode. According to the invention, the C-shaped steel and the concrete are cooperatively stressed, so that the damage mode that the concrete in the stressed area of the NPR reinforced concrete structure is crushed is overcome; by adopting the NPR pre-stressed ribs, the tensile property of the pre-stressed tendons in the steel-concrete composite structure is improved, the ductility of the steel-concrete composite structure is improved, and the high strength and the high ductility of the concrete structure are further improved.
本发明公开了钢混组合高强度高延性预应筋混凝土结构包括混凝土梁主体，混凝土梁主体为支模后现浇的混凝土结构，混凝土梁主体内设置有钢筋笼，钢筋笼包括箍筋组、C型钢、NPR预应筋，箍筋组包括多个间隔排列的箍筋，箍筋组顶部焊接有C型钢，C型钢包裹着混凝土梁主体的顶部，箍筋组内穿设有至少一根NPR预应筋，NPR预应筋与箍筋组固定连接，NPR预应筋两端延伸出混凝土梁主体，NPR预应筋两端部套设有锚具。本发明采用C型钢与混凝土协同受力，克服了NPR钢筋混凝土结构受压区混凝土压碎的破坏模式；采用NPR预应筋提高了钢混组合结构内预应力束的抗拉性能，改善了其结构的延性，进而提高了混凝土结构的高强度高延性。
Steel-concrete combined high-strength high-ductility pre-stressed bar concrete structure
The steel-concrete combined high-strength and high-ductility pre-stress bar concrete structure comprises a concrete beam main body, the concrete beam main body is a cast-in-place concrete structure after formwork erecting, a reinforcement cage is arranged in the concrete beam main body and comprises a stirrup set, C-shaped steel and NPR pre-stress bars, the stirrup set comprises a plurality of stirrups arranged at intervals, and the C-shaped steel is connected with the NPR pre-stress bars. C-shaped steel is welded to the top of the stirrup set and wraps the top of the concrete beam body, at least one NPR pre-stress rib is arranged in the stirrup set in a penetrating mode, the NPR pre-stress rib is fixedly connected with the stirrup set, the two ends of the NPR pre-stress rib extend out of the concrete beam body, and anchorage devices are arranged at the two ends of the NPR pre-stress rib in a sleeving mode. According to the invention, the C-shaped steel and the concrete are cooperatively stressed, so that the damage mode that the concrete in the stressed area of the NPR reinforced concrete structure is crushed is overcome; by adopting the NPR pre-stressed ribs, the tensile property of the pre-stressed tendons in the steel-concrete composite structure is improved, the ductility of the steel-concrete composite structure is improved, and the high strength and the high ductility of the concrete structure are further improved.
本发明公开了钢混组合高强度高延性预应筋混凝土结构包括混凝土梁主体，混凝土梁主体为支模后现浇的混凝土结构，混凝土梁主体内设置有钢筋笼，钢筋笼包括箍筋组、C型钢、NPR预应筋，箍筋组包括多个间隔排列的箍筋，箍筋组顶部焊接有C型钢，C型钢包裹着混凝土梁主体的顶部，箍筋组内穿设有至少一根NPR预应筋，NPR预应筋与箍筋组固定连接，NPR预应筋两端延伸出混凝土梁主体，NPR预应筋两端部套设有锚具。本发明采用C型钢与混凝土协同受力，克服了NPR钢筋混凝土结构受压区混凝土压碎的破坏模式；采用NPR预应筋提高了钢混组合结构内预应力束的抗拉性能，改善了其结构的延性，进而提高了混凝土结构的高强度高延性。
Steel-concrete combined high-strength high-ductility pre-stressed bar concrete structure
钢混组合高强度高延性预应筋混凝土结构
WANG PEIJUN (author) / LI SHUO (author) / YU SHAOBIN (author) / WANG QI (author) / ZHANG XIAO (author) / ZHANG WENCHAO (author) / JIANG BEI (author) / LIU MEI (author) / LIU FANGZHOU (author) / SUN LELE (author)
2023-10-13
Patent
Electronic Resource
Chinese
IPC:
E04C
STRUCTURAL ELEMENTS
,
Bauelemente
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
Ductility of high strength concrete columns
| TIBKAT | 1995
High-strength concrete. Design for ductility
| British Library Conference Proceedings | 1994
Ductility of high strength concrete columns
| UB Braunschweig | 1995
Ductility of High Strength Concrete Columns
| British Library Online Contents | 1993