Box girder prestress pipeline positioning device

Abstract

The invention discloses a box girder prestress pipeline positioning device. The box girder prestress pipeline positioning device comprises a web stirrup which is fixed along the inner side of a box girder side template and limiting steel bars and a positioning supporting steel bar which are horizontally fixed between two opposite inner walls of the web stirrup; the limiting steel bars are providedwith a plurality of recessed parts which are arranged at intervals and are recessed upwards; the positioning supporting steel bar is arranged below the limiting steel bars in parallel and used for supporting corrugated pipes to be positioned so as to enable the corrugated pipes to encircle the recessed portion; and the width of the recessed portion is not larger than the diameter of the corrugated pipes, and the recessed depth of the recessed portion is smaller than the diameter of the corrugated pipes. During operation, the two ends of the positioning supporting steel bar are fixed to the web stirrup, then the plurality of corrugated pipes are installed on the positioning supporting steel bar, then the concave parts of the limiting steel bars are downwards opened to clamp a plurality ofcorrugated pipes correspondingly, and finally the two ends of the limiting steel bars are fixed to the web stirrup. The device has the advantages that the operation is easy, the connecting points arefew, the multiple corrugated pipes at different positions can be positioned and installed at the same time, and the corrugated pipes can be prevented from moving.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to a box girder prestressed pipeline positioning device. Background technique [0002] The installation of prestressed pipe is an extremely important link in the construction process of prestressed box girder, and the accuracy of its installation and positioning is directly related to the effect of prestressed tension. In the construction of prestressed beams, the traditional method is to first install the bottom plate and web reinforcement, then weld the bellows well-shaped positioning ribs, and finally insert the bellows into the bellows well-shaped positioning ribs. Due to external influences during the construction process, the bellows are often displaced, which in turn leads to inaccurate positioning, resulting in asymmetric tension and surface cracks, which seriously affect the safety of the structure. [0003] In view of the above problems, although there are some positioni...

AI Technical Summary

Problems solved by technology

Due to external influences during the construction process, the bellows often shift, which in turn leads to inaccurate positioning, resulting in asymmetric tension and surface cracks, which seriously affect the safety of the structure.

[0003] In view of the above problems, although there are some positioning devices for prestressed corrugated pipes in the prior art, these positioning devices use a large amount of positioning steel bars, and the number of welding points for positioning steel bars is large and the distance from the bellows is close. Not only the construction volume is large, but also Easy to cause damage to bellows

In addition, if the number of corrugated pipes is large, the construction of the positioning device will be difficult, which will easily lead to large deviations in the distance between pipes in the same row, unqualified pipe coordinates in the beam width direction of the corrugated pipes, and a low acceptance rate

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