Positioning construction method for installation space of small-radius same-direction rotary saddle

Abstract

The invention discloses a small-radius co-rotating saddle installation space positioning construction method, which is simple to operate, safe and reliable by adopting the arrangement of assembling jig frames with the same proportion and size, can improve the saddle space positioning construction efficiency, saves the construction cost, and greatly reduces the construction period and the measure cost. A three-point positioning and nine-point checking method is adopted for spatial positioning of the saddle, so that the positioning precision and the working efficiency are greatly improved; saddle positioning high-altitude operation can be avoided, and safety control over construction operation is facilitated; a space positioning bracket adjustable device and fine adjustment of a large adjusting bolt structure of a U-shaped adjusting seat are innovatively combined in an auxiliary mode, adjustability is improved, space positioning and precision adjustment of the saddle can be improved, the space positioning technology is convenient to install, the safety coefficient is large, labor and cost can be greatly saved, and the saddle is suitable for different working conditions; and a better use prospect is brought.

Description

technical field [0001] The invention relates to the technical field of cable-stayed bridge construction, in particular to a small-radius co-rotating saddle installation space positioning construction method. Background technique [0002] The co-rotating stay cable system is to pass each stay cable through the anchorage on one side of the bridge deck, bypass the cable tower, and then anchor it back to the other side anchorage of the same pile number section of the bridge deck to form a pair of stay cables with the same number. , the saddle cleverly converts the pulling force of the cable into annular radial pressure and transmits it to the tower, fundamentally avoiding the generation of tensile stress, and at the same time becoming the hoop prestress of the upper tower column, avoiding the large longitudinal cable force difference of the structure, using The horizontal small cable force difference of the structure is reduced; the oblique saddle of the cable tower is anchored ...

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Problems solved by technology

[0003] The co-rotating saddle system is a co-rotating cable system of "surrounding the tower and anchoring on the bridge deck", which fundamentally solves the problem of cable tower cracking, optimizes the stress mode of the tower column structure, and improves the tower structure. Compared with the construction of the traditional low tower cable-stayed bridge, the durability of the column is greatly enhanced, which not only saves the cost, but also greatly improves the construction efficiency, and also provides convenience for the replacement of the cables in the future; However, there is currently a lack of mature installation methods for the revolving saddle system in the construction field, resulting in an inaccurate installation position of the revolving saddle and inconvenient adjustment. For this reason, we propose a small-radius same-direction revolving saddle installation space positioning construction method

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