Accurate Positioning Tooling and Construction Method for Anchor Bolt Holes of Support Pad Stone

Abstract

The invention provides an accurate positioning assembly for supporting cushion anchor bolt holes and a construction method thereof. The accurate positioning assembly comprises positioning plates and positioning holes formed in the positioning plates and used for positioning anchor bolts, wherein vent holes are formed in the positions of the longitudinal and horizontal crossing intersection points of the positioning plates; and the positioning holes are distributed in four areas divided by longitudinal and horizontal crossing lines. According to the invention, the problem of accurate positioning of the anchor bolt holes before a bridge supporting cushion is poured with concrete is solved; the hole expanding or hole drilling of the anchor bolt holes after the concrete is poured is avoided; the construction efficiency and stability of the bridge cushion can be increased; and the safety risk and the construction cost are saved.

Description

technical field [0001] The invention relates to the technical field of road traffic, in particular to a precise positioning tool for supporting anchor bolt holes of pad stones and a construction method thereof. Background technique [0002] With the rapid development of high-speed railways, the requirements for the accuracy of the location of the anchor bolt holes in the pier support pads are becoming more and more stringent. At present, the commonly used method is to randomly measure according to the outline of the pad stone template and insert the PVC pipe as the position of the anchor bolt hole when the pad stone reinforcement is bound, or to pour all the concrete and wait for it to solidify, and then carry out reaming or drilling after accurate measurement and positioning. hole. Among them, the position where the PVC pipe is inserted as the anchor bolt hole cannot be fixed, and the positioning accuracy is poor. It is neither economical nor efficient to ream or drill hol...

AI Technical Summary

Problems solved by technology

[0003] 1. High-speed railway bridge pier support pad stone concrete has high strength, it is very difficult to ream or drill the anchor bolt holes, the work efficiency is low, and the construction period is extended

[0004] 2. The inner reinforcement of the supporting pad stone is densely distributed, and it is easy to break the pad stone reinforcement during the process of reaming or drilling, thus affecting the stability of the pad stone structure

[0005] 3. The top of the pier is narrow, and drilling or reaming on the pier is prone to safety risks such as falling from high altitudes

[0006] 4. The construction cost is high. During the expansion or drilling process of the pad stone, the reinforced concrete is wasted, and the one-time material cost is relatively large.

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