KR200414459Y1 - Structure for paving bridge installed expansion joint - Google Patents

Abstract

The present invention relates to a paving structure of bridges in which expansion joints are installed, and before installing expansion joints in a block-out portion formed in advance in a plurality of bridges and piers, and slabs constructed between bridges and shifts, Filling inside the block-out portion in advance; A pre-packed slab top and a pier and alternating top including the stuffed block-out portion top; And expansion and contraction devices installed in a state where the packing and filling material of the block-out part are removed.

Description

STRUCTURE FOR PAVING BRIDGE INSTALLED EXPANSION JOINT}

1 is a view schematically showing a bridge in which a conventional expansion joint is installed,

2 is a view schematically showing a bridge to which the packaging structure according to the present invention is applied,

3 is a view showing a state in which a block out between slab and slab;

FIG. 4 is a view illustrating a state in which a styrofoam is formed in the oil passage and a filling material is filled in the block-out portion in FIG. 3;

5 is a view showing a state in which ascon packaging on the upper portion of the slab including the block out in Figure 4,

FIG. 6 is a view illustrating a state in which the filling material is removed after cutting out and removing the ascon packaging by a portion corresponding to the block-out portion in FIG. 5.

<Explanation of symbols for main parts of the drawings>

110 ... pier 120 ... shift

125 ... parafit 130, 130 '... slab

131 ... clearance 132 ... blockout

135 ... Styrofoam 136 ... Sand

150, 160 ... Expansion joint 170 ... Ascon packaging

180 ... Soil

The present invention relates to a pavement structure of the bridge is installed expansion joint.

In constructing a bridge, first, a plurality of bridges 10 and a bridge 20 are installed, and a reinforced concrete structure slab 30 is constructed between the bridges and bridges, and the bridges and bridges, and then the ascon pavement ( 40). At this time, the slab reaches several tens of meters, the displacement is changed as the slab is stretched or shrunk due to the temperature difference in summer or winter. Therefore, expansion joints 50 and 60 for absorbing the displacement of the slab are constructed between the slab and the slab or between the slab and the alternating slab.

Such expansion joints (50) and (60) are aggregate and non-concrete concrete between blockout facing both slabs (30) (30 '), or between the alternating (20) facing the slab (30). Is installed.

The bridge is completed by ascon packaging 70 with a heavy roller on the slab on which the expansion joint devices 50 and 60 are installed.

By the way, ascon pavement 70 is to be constructed while being compacted by a large roller, near the expansion joint device 50, 60 is installed, the compaction of the asphalt concrete is very difficult in the 3 m or less installed conventional expansion joint device. . If the compaction work is not completed, the pavement surface is settled by the car that passes after the bridge construction, and a step is generated. Therefore, the noise is large and the driving comfort is deteriorated.

On the other hand, when installing the expansion joint 60 between the slab 30 and the shift 20, it was very difficult to block out part of the parapet (25), and thus the entire upper part of the parapit was to be removed. .

However, in the case of removing the entire upper part of the parapit, when the aggregate and non-concrete concrete is poured in order to install the expansion joint device 60, it is a cause of pavement damage due to the separation of the aggregate at the upper part of the parapit. In addition, even during paving, aggregate and asphalt concrete entered between the reinforcing bars, which resulted in a relaxation phenomenon during compaction of the paving. In addition, ascon compaction of the asphalt concrete was very difficult in the ground 80 near the parafit, and thus, the pavement surface was subsided by a car that passed after construction.

The present invention has been made to solve the above problems, to provide a paving structure of the bridge is installed in the expansion joint is installed to enable the ascon packaging flattened even in the vicinity of the expansion joint is installed in paving bridge. The purpose.

Another object of the present invention is to provide a pavement structure of a bridge on which expansion joints are installed without having to block out shifts.

In order to achieve the above object, the packaging structure of the bridge on which the expansion joint according to the present invention is installed,

A prefilled inside of the block-out portion prior to installing the expansion joint inside the block-out portion pre-formed in a plurality of bridges and piers, and the slab constructed between the bridge and the shift; A pre-packed slab top and a pier and alternating top including the stuffed block-out portion top; And expansion and contraction devices installed in a state where the packing and filling material of the block-out part are removed.

In the present invention, the block-out portion formed on the alternating upper portion may be formed by blocking only one part of the para-pit portion constituting the alternating upper portion, and the inner reinforcement of the para-pit portion in the block-out portion and the block-out portion It is installed to be separated from each other by bending in other parts.

Hereinafter, with reference to the accompanying drawings, the packaging structure of the bridge on which the expansion joint according to the present invention is installed will be described in detail.

FIG. 2 is a view schematically showing a bridge to which a paving method according to the present invention is applied, and FIG. 3 is a view showing a state in which a block is cut out between the slab and the slab, and FIG. And it is a figure which shows the state which filled the filling material to the blockout part, FIG. 5 is a figure which shows the state which ascon paved the upper part of the slab including a blockout part in FIG. 4, FIG. In this case, after cutting off and removing the ascon packaging by a portion corresponding to the block-out part using a cutter, the figure shows a state in which the filling material is removed.

Prior to applying the pavement structure of the present application, the first step of constructing a plurality of bridges 110 and alternating 120. At this time, the parafit portion formed on the upper portion of the alternating 120 is to block out only one part, and the internal reinforcing bars (M ') M of the parafit portion are bent at each other at portions other than the blockout portion and the blockout portion. Install to separate. This, by changing the formwork and reinforcement shape at the upper end of the alternating 120 it becomes possible to the parapit 125 of the block-out form.

Next, a plurality of pier 110 and pier, and the reinforced concrete slab 130, 130 'between the pier 110 and the alternating 120 is performed. At this time, between the slab 130 'and the next slab 130, and between the slab 130 and the alternating parafit 125, in consideration of the elongation and contraction of the slab 130, 130, the clearance gap of the appropriate interval 131 is formed.

Next, as shown in FIG. 3, the block-out part 132 is formed by blocking the upper side of the oil passage 131 by a predetermined width.

Next, as shown in FIG. 4, the strofoam 135 is filled in the oil gap 31, and the filling material 136 is filled in the blockout part. At this time, the filling material 136 is implemented by filling the sand bag (136b) on the lower side and put the sand (1136a) on the top. The stuffing material 136 filled in the block-out portion is sprinkled with water and tightly. This step is performed using a conventional roller.

Next, the step of wrapping the ascon on the slab (130 ') 130 and the ground 180, including the block-out portion filled with the filling material (136). At this time, since the filling material 136 filled in the block-out portion is firmly chopped, even when working while compacting the ascon, the entire slab including the block-out portion can be paved with ascon, and the parafit of the shift 120 Since only a part of the 125 is blocked out, ascon packaging that can be flattened on the ground 180 becomes possible.

Next, after cutting off and removing the ascon package by a portion corresponding to the block-out part using a cutter, a step of removing the filled stuffing material 136 is performed. At this stage, all foreign matter as well as sand inside the blockout are completely removed and cleaned.

Next, a step of installing the expansion joint device 150, 160 to absorb the displacement change by the expansion and contraction of the slab (130, 130 ') to the block out portion 132.

The installation process of the expansion joints 150, 160 is various, for example, anchor bolts and steel molds are installed in the block-out portion, and after the non-concrete concrete pouring and curing, the steel molds are dismantled and then expanded. There is a way to install the joints. At this time, when pouring non-contraction concrete, compaction is thoroughly performed using a vibrator.

Through the above-described series of steps, the asphalted pavement surface flattened even near the block-out part 132 and the parapitt can be constructed. This is distinguished from the fact that the ascon pavement surface is not flattened near the conventional block-out portion and near the alternate parapitt. That is, when ascon packaging after conventional installation of expansion joints, compacting is not possible within about 3m and near the parafit around the expansion joint, and as a result, the ascon packaging surface is not flat.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible.

As described above, according to the bridge construction structure in which the expansion joint according to the present invention is installed, the flat ascon paving surface compacted near the block-out portion and the shifting parafit where the expansion joint is installed is possible, so that the vehicle after construction Even with this passage, it is possible to prevent the subsidence of the asphalt concrete pavement near the block-out portion and near the parapitt.

Also, in the shift, by implementing the form of the block-out shape by changing the form of the formwork and the reinforcement, it is possible to omit the process for removing the entire parapit and the process for blocking out the parafit as in the prior art. .

Claims (2)

Prior to installing expansion joints inside a plurality of piers and piers and pre-formed block-outs in slabs constructed between piers and alternators, Filling inside the block-out portion in advance; A pre-packed slab top and a pier and alternating top including the stuffed block-out portion top; The expansion and contraction structure of the bridge is installed, characterized in that it comprises a; expansion and contraction apparatus installed in a state in which the packing and filling material is removed. The method of claim 1, wherein the block-out portion formed on the upper portion of the alternating portion is formed by blocking only one part of the parapit portion forming the upper portion of the alternating portion, the internal reinforcement of the parafit portion other than the block-out portion and Packaging structure of the bridge is installed, the expansion joint is characterized in that it is installed so as to be separated from each other bent.

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