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A platform for research: civil engineering, architecture and urbanism
High-strength prestressed tendon anchoring system and construction method thereof
The invention relates to a high-strength prestressed tendon anchoring system and a construction method thereof. The high-strength prestressed tendon anchoring system comprises a corrugated pipe presetin a bridge concrete structure, a connecting sleeve, a base plate, a high-strength prestressed tendon penetrating through the corrugated pipe, a nut screwed on the high-strength prestressed tendon, and a spiral tendon located outside the corrugated pipe.Cement paste is poured into the corrugated pipe after the high-strength prestressed tendon is tensioned. The outer surface of the corrugated pipeis of a spiral corrugated structure, the connecting sleeve is provided with a threaded inner wall, hermetically screwed at the end of the corrugated pipe and fixedly connected with the base plate, and a sealing structure is formed at the contact position. The connecting sleeve and the corrugated pipe are connected in a screwing manner; along with tightening between the connecting sleeve and the corrugated pipe, a sealing structure is formed between the connecting sleeve and the corrugated pipe, a good sealing effect is achieved after connection, the base plate and the connecting sleeve are fixedly connected in a sealed mode, and therefore leakage into the corrugated pipe during bridge concrete pouring is avoided, the corrugated pipe is prevented from being blocked, and high-strength prestressed tendons are ensured to be punched smoothly.
本发明涉及一种高强预应力筋锚固体系及其施工方法，包括预置于桥梁混凝土结构内的波纹管、连接套、垫板、穿于波纹管内的高强预应力筋、拧在高强预应力筋上的螺母，处于波纹管外部的螺旋筋，高强预应力筋张拉后波纹管内灌注水泥浆；波纹管的外表为螺旋波纹结构，连接套具有螺纹内壁，连接套密封螺旋于波纹管端部，连接套与垫板固定连接并在接触部位形成密封结构。连接套与波纹管之间的连接采用旋拧的方式，随着连接套与波纹管之间的拧紧，连接套与波纹管之间形成密封结构，连接后起到较好的密封效果，垫板与连接套之间相固定密封连接，从而避免桥梁浇筑混凝土时渗漏到波纹管内，避免堵塞波纹管，确保高强预应力筋穿孔顺利。
High-strength prestressed tendon anchoring system and construction method thereof
The invention relates to a high-strength prestressed tendon anchoring system and a construction method thereof. The high-strength prestressed tendon anchoring system comprises a corrugated pipe presetin a bridge concrete structure, a connecting sleeve, a base plate, a high-strength prestressed tendon penetrating through the corrugated pipe, a nut screwed on the high-strength prestressed tendon, and a spiral tendon located outside the corrugated pipe.Cement paste is poured into the corrugated pipe after the high-strength prestressed tendon is tensioned. The outer surface of the corrugated pipeis of a spiral corrugated structure, the connecting sleeve is provided with a threaded inner wall, hermetically screwed at the end of the corrugated pipe and fixedly connected with the base plate, and a sealing structure is formed at the contact position. The connecting sleeve and the corrugated pipe are connected in a screwing manner; along with tightening between the connecting sleeve and the corrugated pipe, a sealing structure is formed between the connecting sleeve and the corrugated pipe, a good sealing effect is achieved after connection, the base plate and the connecting sleeve are fixedly connected in a sealed mode, and therefore leakage into the corrugated pipe during bridge concrete pouring is avoided, the corrugated pipe is prevented from being blocked, and high-strength prestressed tendons are ensured to be punched smoothly.
本发明涉及一种高强预应力筋锚固体系及其施工方法，包括预置于桥梁混凝土结构内的波纹管、连接套、垫板、穿于波纹管内的高强预应力筋、拧在高强预应力筋上的螺母，处于波纹管外部的螺旋筋，高强预应力筋张拉后波纹管内灌注水泥浆；波纹管的外表为螺旋波纹结构，连接套具有螺纹内壁，连接套密封螺旋于波纹管端部，连接套与垫板固定连接并在接触部位形成密封结构。连接套与波纹管之间的连接采用旋拧的方式，随着连接套与波纹管之间的拧紧，连接套与波纹管之间形成密封结构，连接后起到较好的密封效果，垫板与连接套之间相固定密封连接，从而避免桥梁浇筑混凝土时渗漏到波纹管内，避免堵塞波纹管，确保高强预应力筋穿孔顺利。
High-strength prestressed tendon anchoring system and construction method thereof
一种高强预应力筋锚固体系及其施工方法
HU YAOQING (author) / ZENG LI (author) / LUO YUZHI (author) / LI JUAN (author)
2020-11-13
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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