KR101033641B1 - Method for constructing expansion joint drain of road structure - Google Patents

Abstract

PURPOSE: A construction method of a waterway for an expansion joint of a road structure is provided to prevent delamination of an ascon pavement layer due to surface water by allowing the surface water penetrating into the ascon pavement layer to be smoothly discharged without staying between the ascon pavement layer and a concrete slab layer. CONSTITUTION: A construction method of a waterway for an expansion joint of a road structure is as follows. A space is formed on the top of concrete slab layers(1) which are arranged at an interval. A guide pipe mounting groove(6) is formed inside an ascon pavement layer(3) in the direction of crossing the space. A perforated drain guide pipe(10) is installed inside the guide pipe mounting groove so that one end of the drain guide pipe is arranged between the ascon pavement layers and the concrete slab layer while the other end is arranged in the gap between the concrete slab layers to guide the drainage of surface water penetrating into the ascon pavement layer. A porous hollow waterway backup material(20) is installed in the gap between the concrete slab layers. A sealant(30) is spread on the top of the waterway backup material. A joint(4) is installed on the top of the concrete slab layers and the gap between the ascon pavement layers.

Description

Construction method of expansion joint drainage of road structure {METHOD FOR CONSTRUCTING EXPANSION JOINT DRAIN OF ROAD STRUCTURE}

The present invention relates to a construction method of the construction of the expansion joint drainage of the road structure, and more specifically, the construction of the road structure so that the road surface water penetrating the ascon pavement layer is smoothly drained without stagnation between the ascon pavement layer and the concrete slab layer. It is related with the construction of genital drainage.

Road structures such as roads installed in the open air, bridge tops, underground roads, river cover structures, parking lot floors (hereinafter referred to as 'structures'), etc. are changed by new construction on bridge decks due to changes in temperature or traffic. Occurs. If you leave this variation, the road structures are destroyed. To prevent this, leave enough spaces between the road structures in consideration of the new construction. If the spaces between these road structures are left as it is, the spaces are damaged and damaged by traffic. Water rises to the site and the water phenomenon increases in summer, and freezes in winter, causing vehicle accidents. For this reason, it is common to have expansion joints with a structure that can be stretched apart.

Such expansion joints use steel anchors, rubber joints, etc., and simple sealing materials. However, in the former case, noise and waterproof problems occur when the vehicle passes. In the latter case, roads have high temperatures. As the clearance increases as the structure expands, the sealing agent swells above the surface of the road, pushing the sealing material during vehicle traffic, and the sealing agent disappears.

As is well known, most roads consist of so-called paved roads (hereinafter referred to as 'roads') covered with pavement such as asphalt or concrete, depending on the safety and smooth communication of vehicles, durability and excellence of maintenance.

These roads are partially cracked due to various factors, such as repeated expansion and contraction with seasonal temperature changes, non-uniformity of static and dynamic loads and stresses applied to the vehicle, aging and ground subsidence. When rainwater or the like penetrates the cracks, the cracks become larger and ultimately lead to breakage and freezing of the roads, which not only causes tremendous obstacles in traffic, but also increases the risk of causing safety accidents.

Therefore, for the safe communication of the vehicle and the extension of the life of the road, it is necessary to properly repair or repack the crack if it occurs.

However, repackaging not only takes enormous costs, but also causes great obstacles in vehicle communication, resulting in high social overhead costs.

Usually, when the crack is not so severe, the method of repairing quickly is mainly used.

The general method for repairing cracks in a conventional road is as follows.

First, use a cutting machine to process the maintenance groove of the appropriate size in the crack (extension) of the road, and use a blower to remove foreign substances such as dust generated during the maintenance groove processing from the maintenance groove. Remove Next, the maintenance groove is heated to an appropriate temperature to facilitate the adhesion of the sealant to properly melt the ascon on the adhesive surface, and at the same time, the water is evaporated and removed. After inserting the backing material into the spaced part by the crack in the heated maintenance groove using the mobile heating injector, fill the maintenance groove with the filling material (aggregate) to complete the repair work.

However, the prior art has the following problems.

Since the filler simply maintains the filling groove through the sealant, shrinkage occurs in the summer, and the filler swells from the maintenance groove, protruding from the surface of the road, and the filler is filled when the filler is filled in the maintenance groove. Filling the separation portion has a problem that the leakage occurs through the filler and the leak occurs between the filler and the road pavement adhesive.

In addition, although the support plate may be placed on the backing agent, the support plate is simply mounted on the backing agent without being fixed by a separate fixing structure or adhesive, so that the force due to the vehicle load and speed after the passage of the vehicle is completed. Severe cases occur when the support plate is easily dropped due to transmission or shock and the filler is pushed up.

In addition, the road surface water flowing through the road surface penetrates into the asphalt concrete pavement layer, after which the drainage is not smooth, so that it penetrates between the concrete slab layer and the asphalt concrete pavement layer. Is generated.

In addition, due to various reasons for poor compaction during the construction of the road structure, a recess is generated on the road surface, and the road surface naturally penetrates the recessed place, and in the related art, water cannot be quickly drained. There is also a problem in that the accumulation of the pavement layer is further weakened by the water and the deformation of the road surface becomes larger.

As described above, the problems as described above also appear in the road surface, the ceiling and the like of the box-type road structure as well as the general road structure.

The present invention is to solve the problems as described above, the road surface water penetrating into the asphalt concrete pavement layer is smoothly drained without stagnation between the asphalt concrete pavement layer and the concrete slab layer to prevent the lifting of the asphalt concrete pavement layer due to the road surface water. The purpose of the present invention is to provide a construction method for expansion joints of new joints of road structures.

 Another object of the present invention is to minimize drainage of the road surface by quickly draining the road surface water even if the road surface is high in a pit of the road surface.

According to an aspect of the present invention, there is provided a method of constructing an expansion joint drainage passage of a road structure, the method including: forming a guide pipe installation groove in a direction perpendicular to the expansion joint space in a concrete slab layer; The porous drainage induction pipe is installed in the induction pipe installation groove formed in the first step, wherein one side of the drainage induction pipe is disposed between the asphalt concrete pavement layer and the concrete slab layer and the other side between the opposite ends of the concrete slab layer. A second step of inducing drainage of the road surface water penetrating the asphalt concrete pavement layer so as to be disposed in a space therein; And a third step of installing a porous hollow drainage backing agent in a space formed between opposite ends of the concrete slab layer after the second step, and applying a sealant on top of the hollow drainage backing agent. It is done.

According to the construction method of the expansion joint drainage of the road structure according to the present invention, the road surface water penetrated inside the asphalt concrete pavement layer is guided to the drainage through the drainage induction pipe to prevent the lifting phenomenon between the asphalt concrete pavement layer and the concrete slab layer, As a result, the cost for refurbishment can be reduced.

In addition, when the drainage water rises, the hollow drainage drainage guides the drainage to prevent accidents caused by winter freezing and summer hydroplaning and is more effective for structures with underground water levels.

In addition, even if the pits on the road surface due to poor compaction during the pavement of the road structure, the road surface water penetrated into the pit without drainage can be quickly drained through the present invention to protect the pavement layer from road water deformation of the road surface (Dents) can be reduced, thereby reducing the discomfort generated when driving through the potholes and reducing the cost of maintenance of road structures.

In addition, it is possible to protect the expansion joint of the box-shaped road structure by quickly draining the water penetrating the ceiling and the wall portion of the box-shaped road structure so that water does not collect.

1 is a process chart of the construction method of expansion joint drainage of the road structure according to the first embodiment of the present invention.
Figure 2 is a view showing a drain pipe installation groove applied to the construction method of expansion joint drainage of the road structure according to the first embodiment of the present invention.
Figure 3 is a plan view showing a drainage pipe constructed by the expansion joint construction of the expansion joint of the road structure according to the first embodiment of the present invention.
Figure 4 is a cross-sectional view of the construction of the first side drainage road constructed by the expansion joint drainage construction method of the road structure according to the first embodiment of the present invention.
Figure 5 is another exemplary view of the hollow drainage backing agent applied to the construction method of expansion joint drainage of the road structure according to the first embodiment of the present invention.
Figure 6 and Figure 7 is an illustration of applying a method of constructing the expansion joint drainage of the road structure according to the second embodiment of the present invention to the box-type road structure.

≪ Example 1 >

The construction method of the expansion joint drainage of the road structure according to the present embodiment will be described with reference to FIG. 1, and for the convenience of description, expansion cracks are generated on the road and described as an example.

(S10) Repair groove formation.

The expansion joint of the existing road is provided with drainage between the spaced drainage paths 2 of the concrete slab layer 1, and on the drainage path 2 of the concrete slab layer 1, that is, between the asphalt concrete pavement layer 3 For example, it is achieved by installing rubber or steel joints 4 (called 'finger joints').

The two lines L1 and L2 spaced apart from each other on the road at regular intervals (the lines L1 and L2 are preferably the boundary between the joint 4 and the asphalt concrete pavement layer 3 described later), and the two lines By removing the joint 4 between (L1, L2) (S10) to form a maintenance groove 5, the top of which is open on the road (S20). Debris of the asphalt concrete pavement layer 3 and the joint 4 inside the repair groove 5 (which can reduce the strength of the road by lowering the filling rate by the filler), which is attached to the inner surface of the repair groove 5 and protrudes or is repaired. 5), etc., and scrapes the inner surface of the repair groove (5) using a vibration brush or the like to drop it from the inner surface of the repair groove (5) and blows compressed air into the repair groove (5) to repair the groove (5). Remove foreign substances from). When the foreign matter removal operation is completed, the inner surface of the repair groove 5 is deteriorated by applying heat to the inside of the repair groove 5 through a high temperture / pressure heat lance. This is a pretreatment process for melting the inner surface of the repair groove 5 and at the same time removing moisture (humidity) and foreign matter so that the adhesive force is increased when the sealant is coated.

On the other hand, when the maintenance groove 5 is formed to form a guide pipe installation groove 6 for the installation of the drainage induction pipe 10. The induction pipe installation groove 6 is an ascon pavement layer 3 so that the drainage induction pipe 10 can guide the road surface water penetrating into the ascon pavement layer 3 to the drainage path under the hollow drainage backing agent 20 which will be described later. ) Is formed up to the inside.

The drain induction pipe 10 is installed in a direction orthogonal to the width direction of the road so as to quickly drain the infiltration water due to the breakage of the construction joint.

As shown in FIG. 2, the guide pipe installation groove 6 may be formed in a groove shape over the top and side surfaces of the concrete slab layer 1 so that the drain induction pipe 10 does not escape.

If drainage is installed in the drainage path between the concrete slab layer (1), the existing drainage is removed.

(S30) drainage induction pipe installation.

The drainage induction pipe 10 is a porous tube, which provides a flow path for drainage by sucking external road water, and the primary induction part 11 for inducing road water infiltrated into the asphalt concrete pavement layer 3, 1. It consists of the secondary induction part 12 which guides the road surface water guided by the primary induction part 11 to the drainage path 2 between the concrete slab layers 1. For example, the primary induction part 11 is formed horizontally so as to be seated on the upper surface of the concrete slab layer 1, and the secondary induction part 12 is a drainage path whose discharge end is formed below the upper surface of the concrete slab layer 1. It may be bent in the primary induction part 11 to face (2). In addition, although the discharge end of the secondary induction part 12 will face the drainage path 2, the support part 13 may additionally be equipped to support the backup drainage 20 in the hollow drainage path.

The drainage induction pipe 10 is installed by being inserted into the guide pipe installation groove 6.

Although the drain induction pipe 10 is illustrated as being installed only on one side in the drawing, the drain induction pipe 10 may be installed on both sides with the drainage path 2 as the center.

(S40) Hollow drainage backup insert.

The hollow drainage backing agent 20 has a long length, for example, a cylindrical shape and a hollow part 21 formed therein, and the hollow part 21 forms a drainage path so as to drain the groundwater filling up the ground and drain it. In the case of rainy seasons, when there is a large amount of groundwater confined to new joints, the groundwater should not flow back to the road. Of course, the hollow drainage channel backup agent 20 may drain the water flowing through the pavement layer or the concrete layer. As shown in FIG. 4, the hollow drainage backup agent 20 is not limited to a cylindrical shape, and a plurality of partitions 22 may be formed therein to have a plurality of hollow portions 21. As such, when the partition wall 22 is present, the hollow drainage channel backup agent 20 may elastically deform along the structure due to the elastic force of the partition wall 22, and a plurality of induction drainage channels may be formed by the partition wall 22. Can be formed to allow rapid drainage.

The hollow drainage backing agent 20 is elastically deformed by the expansion and contraction of the concrete slab layer 1, and therefore, in the state where no external force is applied, the width is larger than the distance between the concrete slab layers 1 (virtual line) Note) When the external force is applied, the elastic deformation is installed, and when the concrete slab layer 1 contracts or expands, it contracts or expands together.

When the support part 13 is provided in the drain induction pipe 10, the hollow drainage backing agent 20 may be seated on the support part 13 of the drain induction pipe 10.

When the installation of the hollow drainage backup agent 20 is completed, the sealant 30 is coated on the hollow drainage backup agent 20.

When the application of the sealant 30 is completed, the finishing plate 40 may be installed to protect the backup agent 20 and the sealant 30 by the hollow drainage system (S50). The closing plate 40 is plate-like to cover the upper portion of the sealant 30, the fixing portion 41 is inserted into the concrete slab layer 1 can be formed, a plurality of drain holes may be provided for drainage have. Closing plate 40 may be optionally used as needed.

When the above process is completed, it finishes by installing and compacting the joint 4 on the concrete slab layer 1 between the ascon pavement layers 3.

In the above, only the road repair was described, but it can be applied to new construction of road joints. That is, the asphalt concrete pavement layer is installed so that the repair groove is formed on the drainage path between the concrete slab layers during the new construction of the road, and the same as the above-described repair process.

Figure 3 shows the expansion joint drainage of the road structure constructed by the construction method of expansion joint drainage of the road structure according to the present invention, for example, in the direction of crossing each other on the center separator 7 in the center When the road is constructed, expansion joints are formed at regular intervals along the traveling direction of the road, and the hollow joint drainage backup agent 20 is installed at the expansion joints. The hollow drainage backup agent 20 is installed along the width direction of the road, and one or more drainage induction pipes 10 are installed in a direction orthogonal to the hollow drainage backup agent 20.

In addition, although not described in the construction method of the present invention, first and second side drainage passages 50 and 60 are formed between the edge of the road and the side opening 8 and the boundary of the central separator 7 and the road.

The first and second side drainage passages 50 and 60 may have the same configuration as the drainage induction pipe 10 or the hollow drainage drainage backup agent 20.

For the construction of the first and second side drainage passages 50 and 60, a groove is formed by breaking the central separator 7 and the boundary of the road, the pavement layer or the concrete layer at the edge of the road with a breaker, and the first and second grooves in the groove. After inserting and installing the side drainage paths 50 and 60, it can be constructed by finishing with expansion joint materials (all that can be expanded as joints of steel or elastic bodies, sealants, etc.). Both end portions of the first and second side drains 50 and 60 may be connected to the hollow drainage backup agent 20 to induce drainage.

In addition, as shown in FIGS. 3 and 4, the first side drain passage 50 is provided with a plurality of drain holes 51 to drain the water to the side opening 8 to prevent water from stagnation at the edge of the road.

The central separator (7) and the side opening (8) are easily separated from the asphalt concrete pavement and concrete joints, so water penetration is severe, and the first and second side drainage passages (50, 60) quickly disperse such infiltration water toward the sump. can do.

According to the drainage channel constructed by the present invention, when the concrete slab layer 1 shrinks or expands due to temperature, the hollow drainage backing agent 20 and the sealant 30 are each contracted or expanded by their own elastic force so that they are not destroyed. To protect the expansion joint between the concrete slab layer (1). Since the drain induction pipe 10 is not related to the expansion joint, the concrete slab layer 1 remains installed without contraction or expansion even when the concrete slab layer 1 contracts or expands.

Meanwhile, the road surface water penetrates into the asphalt concrete pavement layer 3 and then flows along with the concrete slab layer 1, which flows into the drainage induction pipe 10 and enters the concrete slab along the drainage induction pipe 10. Induced drainage to drainage path 2 between layers 1.

<Example 2>

As shown in FIG. 6 and FIG. 7, the construction method of the expansion joint drainage passage of the road structure according to the present embodiment relates to the ceiling of the box-shaped road structure B. As shown in FIG.

That is, the drainage induction pipe 10 is installed in the expansion joint between the first and second boxes B1 and B2 in the same manner as in Example 1, and the hollow drainage channel backup agent under the drainage induction pipe 10 ( 20) was installed along the expansion joint, and the sealant 30 was applied to the bottom of the backup agent 20 in a hollow drainage system to be waterproofed. And the expansion joint material 4 can be provided in the lower part of the sealant 30. FIG.

The drainage induction pipe 10 is arranged along the expansion joint to induce drainage of water penetrating into the expansion joint between the first and second boxes B1 and B2 buried in the ground, and the hollow drainage backup agent 20 Induces drainage by absorbing water introduced into expansion joints.

The drainage induction pipe 10 and the hollow drainage channel backup agent 20 are installed in the ceiling to drain water penetrating into the expansion joint of the ceiling, and the sidewalls installed on the side walls of the first and second boxes B1 and B2. Induced drainage to the floor through the drainage 70.

Here, the side wall drainage 70 may be connected to the backup drainage 20 in the hollow drainage drainage system of Embodiment 1, for example, to induce drainage together. The expansion joint material may be installed outside the side wall drainage agent 70 in the side wall portion of the expansion joint portion between the first and second boxes B1 and B2.

In this embodiment, the finishing plate applied in Example 1 may also be applied.

According to the present embodiment, the water permeating to the ceiling of the box-shaped road structure can be induced and drained to the floor through the ceiling and the side walls, that is, all the expansion joints including the road surface by inducing rapid drainage to the expansion joint (ceiling, Since water is not accumulated on the side walls and the road surface, deformation by water can be prevented.

1: concrete slab layer, 2: drainage
3: ascon pavement layer, 4: joint
5: maintenance groove, 6: guide pipe installation groove
10: drainage induction pipe, 20: hollow drainage backup
30: sealant, 40: finish plate
50,60: first and second side drains, 70: side wall drainage

Claims (6)

A first step of forming a guide pipe installation groove (6) in a direction orthogonal to the expansion joint (2) in a road structure formed of a layer structure of the concrete slab layer (1) and the asphalt concrete pavement layer (3);
A primary induction part 11 for inducing road surface water penetrating the asphalt concrete pavement layer 3, extending from the primary induction part, and inducing road surface water induced by the primary induction part between the concrete slab layer 1; The porous induction pipe 10 consisting of the secondary induction part 12 is installed in the induction pipe installation groove formed in the first step, wherein the primary induction part of the drain induction pipe between the asphalt concrete pavement layer and the concrete slab layer A second step of arranging the secondary induction part in the expansion joint to induce drainage of the road surface water penetrating the asphalt concrete pavement layer;
After the second step, a porous hollow drainage backup agent 20 is installed in the expansion joint formed between the opposite ends of the concrete slab layer, and the sealant 30 is applied to the upper portion of the hollow drainage backup agent. A third step of installing a finishing plate 40 having a fixing part 41 inserted into and fixed to the concrete slab layer on an upper portion of the sealant;
And a fourth step of forming and finishing the expansion joint material on the expansion joint after the third step. delete A first step of constructing a drainage path in the road surface of the expansion joint of the box-type road structure;
And a second step of constructing a drainage part in the ceiling part and the wall part of the expansion joint part of the box-type road structure,
The first step may include: a first-first step of forming a guide pipe installation groove 6 in a direction orthogonal to the expansion joint part on the road surface part of the box-shaped road structure;
A primary induction part 11 for inducing road surface water penetrating the road surface portion of the box-shaped road structure, a secondary induction part extending from the primary induction part to guide the road surface water induced by the primary induction part to the expansion joint part. A first step (2) of installing the porous drain induction pipe (10) formed in the induction pipe installation groove formed in step 1-1; After the first and second steps, the porous joint drainage backup agent 20 is installed on the expansion joint, and the sealant 30 is applied to the upper portion of the hollow drainage backup agent, and the road surface part of the box-type road structure is provided. A first step (3) of installing a closing plate (40) having a fixing part (41) inserted into and fixed to the upper part of the sealant; After the step 1-3 includes the steps 1-4 to form and finish the expansion joint to the expansion joint portion,
The second step comprises:
Step 2-1 of forming a guide pipe installation groove in the ceiling of the expansion joint between the box-shaped road structure having a space therein; The porous drainage induction pipe 10 is installed in the induction pipe installation groove formed in step 2-1, wherein one side of the drainage induction pipe is disposed on the expansion joint between the box-type road structures along the expansion joint. Step 2-2 to be arranged to induce drainage of water penetrating the expansion joint; Installing a porous hollow drainage backing agent 20 in the expansion joint after the step 2-2 and waterproofing the bottom of the hollow drainage backing agent; Side wall drainage 70 is installed on both side walls of the expansion joints between the box-shaped road structures, and the upper portion of the side wall drainage is connected in fluid communication with the drainage induction pipe and the hollow drainage backing agent. And a second to fourth step of causing the water guided by the induction pipe and the hollow drainage backing agent to induce drainage through the sidewall drainage.
delete According to claim 1 or 3, wherein the center of the road structure is constructed a central separator (7), the bottom of the central separator (7) is buried to communicate with the hollow drainage backing agent bottom portion of the central separator Construction method of the expansion joint drainage of the road structure characterized in that it comprises a second side drainage (60) for draining the water penetrating. According to claim 1, At least one drain 51 is provided in communication with the side opening 8 of the edge of the road structure is installed to communicate with the hollow drainage backing agent at the edge of the road structure and the hollow drainage backing agent Construction method of the expansion joint drainage of the road structure characterized in that it comprises a first side drainage passage (50) for draining the water flowing through and the water penetrating the edge of the road structure.

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