Blocking plate for plugging gap in bottom of guardrail hanging plate and using method thereof

Abstract

The invention discloses a blocking plate for plugging a gap in the bottom of a guardrail hanging plate and a using method thereof. A blocking plate body is formed by sequentially connecting three blocking plate sections which form a whole, the three blocking plate sections are an upper blocking plate, a middle blocking plate and a lower blocking plate respectively, a cross section structure of the blocking plate body is approximately in a shape of a Chinese character 'zhi', evenly-distributed through holes with the hole diameter ranging from 5 mm to 10 mm are formed in the upper blocking plate and the middle blocking plate, and the lower blocking plate is a through-hole-free plate body. The blocking plate body is formed by prefabricating PPR materials or other plastic materials with good hardness, toughness or weather resistance. The upper blocking plate and the middle blocking plate can be respectively twisted around an intersecting line between the blocking plates, and a rubber pad having good elasticity is bonded at the intersecting line position between the blocking plates. A self-stabilized formwork system can be established when the guardrail hanging plate is installed, and especially achievement of tight filling of the gap between the guardrail hanging plate and a flange plate is facilitated during guardrail concrete pouring.

Description

Technical field [0001] The invention relates to a baffle used for densely filling the gap between the guardrail hanging plate and the flange plate of a newly built bridge, and a method of using the baffle. Background technique [0002] There are three construction methods for bridge concrete guardrail. One is to erect formwork on both sides of the inside and outside (need to be removed), and then to cast the guardrail concrete; the other is to precast the guardrail as a whole with a small amount of cast-in-situ at the bottom; (Not removed), erect the formwork on the inner side (need to be removed), and then cast concrete in place. In the above-mentioned first construction method, although there is no gap between the guardrail and the flange plate, there are many on-site operation procedures, the qualification rate of the steel protection layer is low, the amount of formwork is large, the construction speed is slow, and the adjustment range of the structural line is small. The se...

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned third construction method has been selected by a large number of bridge projects in China, and the following situations often occur in use: (1) In order to ensure the appearance of the bridge, the position of the siding needs to be adjusted locally, resulting in the siding and the flange The gap between the slabs varies in size; (2) The top of the gap between the hanging slab and the flange slab is filled with wood strips, gravel, mortar strips and other materials, which are used as the bottom form of the cast-in-place concrete for the guardrail; (3) The hanging slab and the flange slab The middle and bottom of the gap are often filled with mortar, which is time-consuming and labor-intensive, and the sealing effect is poor and it is easy to fall off; (4) The water seeping from the gap between the hanging plate and the flange plate overflows to the bottom of the flange plate, causing the concrete surface slurry Shedding, bare aggregates and even accelerated steel corrosion

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