Expandable guide beam structure used in pushing and pier loading process: Fid-Bau Portal

Expandable guide beam structure used in pushing and pier loading process

CHEN CHANGSHENG / YANG FENG / LIU YUQING / XU XIAOQING

The invention relates to an expandable guide beam structure used in the process of pushing to a pier. The expandable guide beam structure comprises a steel truss main body (1), a telescopic web member (3) and a jack device (4), the steel truss main body (1) is connected with the pushing main beam body (5); the steel truss main body (1) comprises a plurality of sections which are connected in sequence, and every two adjacent sections are connected through a node; the section of the steel truss main body (1) comprises a cross beam (11), and the cross beam (11) connected with the node is hollow; a bearing rod (2) is arranged in the cross beam (11) and is used for supporting the sections to rotate; the telescopic web member (3) is connected with the jack device (4); and the telescopic web members (3) are connected with the steel truss main body (1). Compared with the prior art, the unfoldable guide beam structure is movable, and the section height can be changed by freely stretching out and drawing back the web members, so that the deflection of the cantilever is reduced, and the pushing and pier loading process is assisted.

本发明涉及一种顶推上墩过程使用的可展开式导梁结构，包括钢桁架主体(1)、伸缩腹杆(3)、千斤顶装置(4)；所述钢桁架主体(1)和顶推主梁梁体(5)连接；所述钢桁架主体(1)包括多个依次连接的节段，相邻两节段之间通过节点连接；所述钢桁架主体(1)的节段包括横梁(11)，与节点连接的横梁(11)内中空；所述横梁(11)内设有轴承杆(2)，所述轴承杆(2)用于支持节段转动；所述伸缩腹杆(3)与千斤顶装置(4)连接；所述伸缩腹杆(3)与钢桁架主体(1)连接。与现有技术相比，本发明是一种可活动的，能够自由伸缩腹杆来改变截面高度，从而减少悬臂挠度，辅助顶推上墩过程的可展开式导梁结构。

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