Three-way positioning device for base steel anchor box

Abstract

The invention discloses a three-way positioning device for a base steel anchor box. The three-way positioning device comprises a profile steel base, a steel pipe bracket system and a jack fine-adjustment system, wherein concrete embedded steel plates are welded at the bottom of the profile steel base and arranged in a # shape; the steel pipe bracket system comprises steel pipes and flat joints; the four steel pipes are vertical to the middle of the profile steel base respectively; the flat joints are arranged on the four steel pipes and divided into upper and lower layers; the jack fine-adjustment system comprises jacks and jack rear seats; the number of the jacks is 16; the 12 jacks are arranged on the jack rear seats welded on the profile steel base; the 8 jacks are arranged in an X-axis direction; the 4 jacks are arranged in a Y-axis direction; and the rest 4 jacks are flat jacks and are arranged at the two edges on the inner sides of the two vertical edges of the # shape of the profile steel base in a z-axis direction respectively and directly arranged on the bottom concrete surface. The three-way positioning device solves the problem of difficulty for positioning in the cable tower base steel anchor box, has the characteristics of simplicity for operation, convenience for construction, accuracy for positioning, high work efficiency and the like, lowers the construction difficulty and saves the construction cost.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a precise positioning device for a steel anchor box of a cable tower base of a cable-stayed bridge. Background technique [0002] The cable tower anchorage area of ​​cable-stayed bridges is usually designed with a steel anchor box structure to resist the strong horizontal component force of the cable stay. The steel anchor box in the first section of the anchorage area is also called the base steel anchor box. , high positioning accuracy and other characteristics, the accuracy control of its installation and positioning is the key technology for the construction of the anchorage area of ​​the cable tower. And the tension control force has a greater influence. At present, in the construction of domestic cable-stayed bridges, there is no mature precise positioning technology for the base steel anchor box. The conventional base steel anchor box positioning usually first level the...

AI Technical Summary

Problems solved by technology

At present, in the construction of domestic cable-stayed bridges, there is no mature precise positioning technology for the base steel anchor box. The conventional base steel anchor box positioning usually first level the concrete surface at the bottom, then pop out the end lines around the steel anchor box, and use the tower crane to lift the base steel anchor box. Anchor boxes are placed manually. This method has low positioning accuracy and cannot achieve fine adjustment. It is labor-intensive and time-consuming and the effect is not good.

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