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A platform for research: civil engineering, architecture and urbanism
Large-span prestressed beam structure and construction method thereof
The invention discloses a large-span prestressed beam structure and a construction method thereof. The large-span prestressed beam structure comprises a main beam; two secondary beams which are oppositely arranged and connected to one side face of the main beam; a haunching structure which is supported and connected between the inner side of the secondary beam and the side surface of the main beam; a prestressed tendon which comprises a straight section and a bent section, the straight section is embedded in the main beam and arranged between the two secondary beams, the bent section is embedded in the main beam and connected to one end of the straight section, and the other end of the bent section penetrates through the secondary beams and the haunching structures and extends to the outer sides of the secondary beams; and a sheath structure which comprises a rigid pile casing and an energy-absorbing material, the rigid pile casing is embedded in the haunched structure and penetrates through the haunched structure, the rigid pile casing is provided with two closed ends, the closed ends are provided with through holes, the bent sections penetrate through the through holes in the two ends of the rigid pile casing, and the space between the bent sections and the inner wall of the rigid pile casing is filled with the energy-absorbing material. The invention solves the problem that the prestress of the large-span prestressed beam is easy to extrude and damage the concrete structure at the turning or bending section.
本发明公开了一种大跨度预应力梁结构及其施工方法，该结构包括：主梁；相对设置的两次梁，连接于主梁的一侧面；加腋结构，支撑连接于次梁的内侧与主梁的侧面之间；预应力筋，包括平直段和弯折段，平直段埋设于主梁内且设置于两次梁之间，弯折段埋设于主梁中且连接于平直段的一端，弯折段的另一端贯穿于次梁和加腋结构并伸至次梁的外侧；以及护套结构，包括刚性护筒和吸能物料，刚性护筒埋设于加腋结构中且贯穿加腋结构，刚性护筒具有两封闭端，封闭端开设有穿孔，弯折段穿设于刚性护筒的两端的穿孔，吸能物料填充于弯折段与刚性护筒的内壁之间。本发明解决了大跨度预应力梁的预应力在转折或弯曲段处容易挤压破坏混凝土结构的问题。
Large-span prestressed beam structure and construction method thereof
The invention discloses a large-span prestressed beam structure and a construction method thereof. The large-span prestressed beam structure comprises a main beam; two secondary beams which are oppositely arranged and connected to one side face of the main beam; a haunching structure which is supported and connected between the inner side of the secondary beam and the side surface of the main beam; a prestressed tendon which comprises a straight section and a bent section, the straight section is embedded in the main beam and arranged between the two secondary beams, the bent section is embedded in the main beam and connected to one end of the straight section, and the other end of the bent section penetrates through the secondary beams and the haunching structures and extends to the outer sides of the secondary beams; and a sheath structure which comprises a rigid pile casing and an energy-absorbing material, the rigid pile casing is embedded in the haunched structure and penetrates through the haunched structure, the rigid pile casing is provided with two closed ends, the closed ends are provided with through holes, the bent sections penetrate through the through holes in the two ends of the rigid pile casing, and the space between the bent sections and the inner wall of the rigid pile casing is filled with the energy-absorbing material. The invention solves the problem that the prestress of the large-span prestressed beam is easy to extrude and damage the concrete structure at the turning or bending section.
本发明公开了一种大跨度预应力梁结构及其施工方法，该结构包括：主梁；相对设置的两次梁，连接于主梁的一侧面；加腋结构，支撑连接于次梁的内侧与主梁的侧面之间；预应力筋，包括平直段和弯折段，平直段埋设于主梁内且设置于两次梁之间，弯折段埋设于主梁中且连接于平直段的一端，弯折段的另一端贯穿于次梁和加腋结构并伸至次梁的外侧；以及护套结构，包括刚性护筒和吸能物料，刚性护筒埋设于加腋结构中且贯穿加腋结构，刚性护筒具有两封闭端，封闭端开设有穿孔，弯折段穿设于刚性护筒的两端的穿孔，吸能物料填充于弯折段与刚性护筒的内壁之间。本发明解决了大跨度预应力梁的预应力在转折或弯曲段处容易挤压破坏混凝土结构的问题。
Large-span prestressed beam structure and construction method thereof
大跨度预应力梁结构及其施工方法
YANG YONGHONG (author) / XU YUFEI (author) / ZHAN JINSHENG (author) / WANG XIAOLI (author) / CHENG YINHANG (author)
2022-02-11
Patent
Electronic Resource
Chinese
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