Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Unbonded prestressed steel pipe confined concrete prefabricated assembled pier structure and construction method thereof
The invention relates to an unbonded prestressed steel pipe confined concrete prefabricated assembled pier structure and a construction method thereof. The structure comprises a cover beam (2), a stand column (3) and a bearing platform (6) which are sequentially connected through prestressed tendons (1) in a penetrating mode. A bent cap pre-embedded energy-consuming steel bar (42) is arranged between the bent cap (2) and the stand column (3) in a penetrating mode, and a stand column pre-embedded energy-consuming steel bar (44) is arranged between the stand column (3) and the bearing platform (6) in a penetrating mode. Anchor bearing plates (13) which abut against the cover beam (2) and the bearing platform (6) respectively are arranged on the outer side of the cover beam (2) and the outer side of the bearing platform (6), anchor bolts (12) used for fastening are arranged on the outer sides of the anchor bearing plates (13), and the anchor bearing plates (13) and the anchor bolts (12) are arranged at the ends of the prestressed tendons (1) in a sleeved mode. Compared with the prior art, the problems of local buckling of the steel pipe and low-cycle fatigue fracture caused by the local buckling of the steel pipe under the earthquake action can be solved, and the steel pipe is interrupted at the joint of the pier bottom, does not bear vertical tension and pressure and only plays a role in restraining concrete.
本发明涉及一种无粘结预应力钢管约束混凝土预制拼装桥墩构造及其施工方法，该构造包括由预应力筋(1)依次穿设连接的盖梁(2)、立柱(3)和承台(6)；盖梁(2)与立柱(3)之间穿设有盖梁预埋耗能钢筋(42)，立柱(3)和承台(6)之间穿设有立柱预埋耗能钢筋(44)。盖梁(2)和承台(6)外侧设有分别与盖梁(2)和承台(6)抵接的锚垫板(13)，该锚垫板(13)外侧设有用于紧固的锚固螺栓(12)，锚垫板(13)和锚固螺栓(12)套设在预应力筋(1)端部。与现有技术相比，本发明可以解决地震作用下钢管局部屈曲，并随之引发的低周疲劳断裂问题，钢管在墩底接缝处被中断，不承受竖向拉力和压力，仅起到约束混凝土的作用。
Unbonded prestressed steel pipe confined concrete prefabricated assembled pier structure and construction method thereof
The invention relates to an unbonded prestressed steel pipe confined concrete prefabricated assembled pier structure and a construction method thereof. The structure comprises a cover beam (2), a stand column (3) and a bearing platform (6) which are sequentially connected through prestressed tendons (1) in a penetrating mode. A bent cap pre-embedded energy-consuming steel bar (42) is arranged between the bent cap (2) and the stand column (3) in a penetrating mode, and a stand column pre-embedded energy-consuming steel bar (44) is arranged between the stand column (3) and the bearing platform (6) in a penetrating mode. Anchor bearing plates (13) which abut against the cover beam (2) and the bearing platform (6) respectively are arranged on the outer side of the cover beam (2) and the outer side of the bearing platform (6), anchor bolts (12) used for fastening are arranged on the outer sides of the anchor bearing plates (13), and the anchor bearing plates (13) and the anchor bolts (12) are arranged at the ends of the prestressed tendons (1) in a sleeved mode. Compared with the prior art, the problems of local buckling of the steel pipe and low-cycle fatigue fracture caused by the local buckling of the steel pipe under the earthquake action can be solved, and the steel pipe is interrupted at the joint of the pier bottom, does not bear vertical tension and pressure and only plays a role in restraining concrete.
本发明涉及一种无粘结预应力钢管约束混凝土预制拼装桥墩构造及其施工方法，该构造包括由预应力筋(1)依次穿设连接的盖梁(2)、立柱(3)和承台(6)；盖梁(2)与立柱(3)之间穿设有盖梁预埋耗能钢筋(42)，立柱(3)和承台(6)之间穿设有立柱预埋耗能钢筋(44)。盖梁(2)和承台(6)外侧设有分别与盖梁(2)和承台(6)抵接的锚垫板(13)，该锚垫板(13)外侧设有用于紧固的锚固螺栓(12)，锚垫板(13)和锚固螺栓(12)套设在预应力筋(1)端部。与现有技术相比，本发明可以解决地震作用下钢管局部屈曲，并随之引发的低周疲劳断裂问题，钢管在墩底接缝处被中断，不承受竖向拉力和压力，仅起到约束混凝土的作用。
Unbonded prestressed steel pipe confined concrete prefabricated assembled pier structure and construction method thereof
一种无粘结预应力钢管约束混凝土预制拼装桥墩构造及其施工方法
CHEN XIULIN (Autor:in) / GAO HAOYUAN (Autor:in) / WANG SHENGBIN (Autor:in) / QU HONGYA (Autor:in) / TANG GUOXI (Autor:in) / ZHU JUN (Autor:in) / XIA FEILONG (Autor:in) / QIU TIJUN (Autor:in) / WU ZHIGANG (Autor:in) / WANG LINKAI (Autor:in)
14.03.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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