Tooling device for tensioning steel anchor box inhaul cable and tensioning method thereof

Abstract

The invention provides a tooling device for tensioning an inhaul cable. The tooling device comprises a tensioning rod, a tensioning cylinder, a shoulder pole beam and a jack. The tooling device is characterized in that the tensioning cylinder is a two-half combined structure; the shoulder pole beam is connected to the upper end of the tensioning cylinder by adopting a fixing structure, the shoulder pole beam is of a two-half combined structure, a groove hole is formed in the middle of the shoulder pole beam, the inhaul cable penetrates through the groove hole, round holes and screw holes are formed in the two sides of the shoulder pole beam, the tensioning rod penetrates through the round holes, and bolts penetrate through the screw holes; and the tensioning cylinder is provided with a lugplate structure, a concave or convex rabbet structure is arranged at the upper end of the tensioning cylinder, and the groove hole of the shoulder pole beam is provided with a concave or convex rabbet structure. The invention further provides a tensioning method for the steel anchor box inhaul cable. The tooling device is simple in structure, simple to operate, safe and reliable, and the rabbet structure has the advantage of connecting the inhaul cable in a centering mode. In the process of inhaul cable tension, the structural characteristics of a steel anchor box and a conventional inhaul cable are not changed, and the advantages of the steel anchor box and the conventional inhaul cable are combined.

Description

technical field [0001] The invention relates to a prestressed structure construction device and a method thereof, in particular to a tooling device and a tensioning method for steel anchor box cable tensioning. Background technique [0002] Composite anchorage structure has been more and more widely used in bridges in recent years, because it can take advantage of the mechanical properties of steel and concrete at the same time. The design method of this structure has the following advantages: the mechanical performance of the anchorage structure is good, and under the same conditions, the outer dimension of the anchorage structure of the composite cable tower is smaller. However, there is a conflict between this structure and the conventional finished cable structure. The tension end anchorage of the conventional finished cable is usually designed as a section of internal thread, which is used to connect the cable to the tension rod for tension, and the steel anchor box is ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the above-mentioned traditional tensioning tool is not suitable for tensioning steel anchor box cables, the present invention provides a tooling device and a tensioning method for steel anchor box cable tensioning. Designed as a Haval structure (i.e. designed as a structure of two halves combined), the tension tube and the pole beam are connected by a stopper, and the tension cable is directly attached to the center end face of the steel anchor box, which can be realized without the traditional reaction frame structure The problem that the conventional finished cable cannot be stretched in the anchor box structure, so as to realize the combination of the steel anchor box and the cable, meet the requirements of design and construction

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