Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Step joint structure of segmental prefabricated assembled concrete bridge
The invention relates to the field of bridge engineering, in particular to a step joint structure of a segmental prefabricated assembled concrete bridge, the step joint structure is formed by assembling a plurality of prefabricated segments, the prefabricated segments are bonded through epoxy resin glue or subjected to dry joint, and the adjacent ends of the prefabricated segments are prefabricated into matched step-shaped steps. A plurality of prefabricated sections are arranged in a stepped mode, vertical prestressed tendon hole channels are reserved in the positions of the stepped steps, the prefabricated sections are provided with communicated longitudinal prestressed tendon hole channels, and after the prefabricated sections are assembled, the vertical prestressed tendons and the longitudinal prestressed tendons are tensioned in batches and anchored. The integrality and the connection stability of the segmental beam are improved, the bending and shearing performance of the segmental beam is improved, and the anti-cracking performance and the after-cracking rigidity of the segmental beam are improved.
本发明涉及桥梁工程领域，具体涉及一种节段预制拼装混凝土桥梁的阶梯接缝构造，该阶梯接缝构造由若干预制节段拼装而成，预制节段之间通过环氧树脂胶粘结或干接缝，预制节段的相邻端预制成相适配的阶梯状台阶，并在阶梯状台阶处预留竖向预应力筋孔道，若干预制节段设置有相连通的纵向预应力筋孔道，预制节段拼装后，分批次张拉竖向预应力筋及纵向预应力筋，并锚固。本发明提高了节段梁的整体性和连接稳定性，提高了节段梁的受弯和受剪性能，提高了节段梁抗裂性能和裂后刚度。
Step joint structure of segmental prefabricated assembled concrete bridge
The invention relates to the field of bridge engineering, in particular to a step joint structure of a segmental prefabricated assembled concrete bridge, the step joint structure is formed by assembling a plurality of prefabricated segments, the prefabricated segments are bonded through epoxy resin glue or subjected to dry joint, and the adjacent ends of the prefabricated segments are prefabricated into matched step-shaped steps. A plurality of prefabricated sections are arranged in a stepped mode, vertical prestressed tendon hole channels are reserved in the positions of the stepped steps, the prefabricated sections are provided with communicated longitudinal prestressed tendon hole channels, and after the prefabricated sections are assembled, the vertical prestressed tendons and the longitudinal prestressed tendons are tensioned in batches and anchored. The integrality and the connection stability of the segmental beam are improved, the bending and shearing performance of the segmental beam is improved, and the anti-cracking performance and the after-cracking rigidity of the segmental beam are improved.
本发明涉及桥梁工程领域，具体涉及一种节段预制拼装混凝土桥梁的阶梯接缝构造，该阶梯接缝构造由若干预制节段拼装而成，预制节段之间通过环氧树脂胶粘结或干接缝，预制节段的相邻端预制成相适配的阶梯状台阶，并在阶梯状台阶处预留竖向预应力筋孔道，若干预制节段设置有相连通的纵向预应力筋孔道，预制节段拼装后，分批次张拉竖向预应力筋及纵向预应力筋，并锚固。本发明提高了节段梁的整体性和连接稳定性，提高了节段梁的受弯和受剪性能，提高了节段梁抗裂性能和裂后刚度。
Step joint structure of segmental prefabricated assembled concrete bridge
一种节段预制拼装混凝土桥梁的阶梯接缝构造
LIU WENJIE ( Autor:in ) / HAN BING ( Autor:in ) / XIE HUIBING ( Autor:in ) / LIU CONG ( Autor:in ) / XIAO ZHUOHONG ( Autor:in )
23.06.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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