Cable saddle rigidization structure and integral position-fixing and mounting method thereof

Abstract

The invention relates to a cable saddle rigidization structure and an integral position-fixing and mounting method thereof. The cable saddle rigidization structure comprises a section steel frame bodyand multi-layer cable saddles mounted on the section steel frame body, wherein the position fixing of the multi-layer cable saddles relative to each other is achieved through relative coordinates; relative space angles of the multi-layer cable saddles are ensured to be in accordance with relative space angles of cable saddles in cable bent tower segments; the section steel frame body comprises frame body vertical rods corresponding to embedded parts in the cable bent tower segments in position, position-fixing horizontal rods transversely connected to the frame body vertical rods, and frame body horizontal rods longitudinally connected to the frame body vertical rods; the cable saddles are placed on the position-fixing horizontal rods; and the positions of the cable saddles are fixed through position-limiting section steel. The multi-layer cable saddles are controlled through the relative coordinates during rigidization, so that the relative positions of the multi-layer cable saddlesare guaranteed. The multi-layer cable saddles are integrally hoisted to the tower after rigidization and then controlled through absolute coordinates. The position fixing is fast, and the position fixing precision is high. In addition, position fixing performed aloft is not needed, and the construction of a cable bent tower is not affected, so that the overall construction progress is accelerated.

Description

technical field [0001] The invention belongs to the field of bridges, in particular to a cable saddle rigid body structure and an overall positioning and installation method thereof. Background technique [0002] With the continuous development of bridge technology, the appearance of low-tower cable-stayed bridges fills the intermediate state between girder bridges and cable-stayed bridges, and becomes a bridge between girder bridges (rigid) and cable-stayed bridges (flexible). The semi-rigid and semi-flexible structure has become the dominant bridge type with a span of 200-300 meters by virtue of its advantages of flexible design, simple construction, and beautiful appearance. In order to reduce the stress concentration on the main tower and improve the durability of the cables, and to facilitate cable replacement in the later stage, the form of the saddle is further optimized from a double-casing saddle to a split-tube saddle. [0003] The cable saddles are located on the...

AI Technical Summary

Problems solved by technology

[0004] The invention solves the defects in the prior art that the high-altitude positioning of the cable saddle takes a long time, requires high positioning accuracy of the cable saddle, and restricts the construction progress of the cable tower, and provides a rigid structure of the cable saddle and its overall positioning and installation method. The shaped steel frame and the cable saddle are consolidated after adjusting the elevation and space angle to form a cable saddle rigid body structure, fast positioning, high positioning accuracy, and no need for high-altitude positioning, which does not affect the cable tower construction and improves the overall construction progress

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