KR102115835B1 - Flexible joint structure of road structure using geoell filled with elastic sealant and method of construction - Google Patents

Abstract

The present invention provides a flexible joint structure of a road structure using a geocell filled with an elastic joint material and a construction method thereof, wherein the flexible joint structure is constructed by using the geocell filled with the elastic joint material in a plurality of spaces uniformly formed in a predetermined shape when a flexible joint part of the road facility installed on an upper portion of a portion to which a concrete structure is connected is formed. Therefore, a working process is very simple so that workforce, time, and costs can be prominently reduced and the high quality flexible joint part in which a port hole is not generated can be formed.

Description

Flexible joint structure of road structure using geoell filled with elastic sealant and method of construction}

The present invention relates to a stretch joint structure of a road structure, and more particularly, when forming a stretch joint of the road structure, construction using a geocell (geocell) filled with elastic joints in a plurality of spaces formed uniformly By doing so, the process is simple and significantly reduces manpower, time, and cost, and a porthole is not generated in the expansion joint, and a geocell filled with an elastic joint and a expansion joint structure and construction method of the road structure using the same.

In general, when constructing a road structure such as an underground roadway or a bridge deck, a reinforced concrete structure is spaced at a certain distance, and then a road pavement material is installed with a certain thickness on top of the concrete structure, such as asphalt, to construct it. The expansion and contraction are repeated according to the change in the air temperature, and the concrete structure and the road pavement have different strains depending on the temperature, so the concrete structure and the road pavement material are separated and deformed while expanding or contracting depending on the change in the air temperature. Cracks are generated in the paved road pavement.

Since a certain gap is formed between the concrete structures among the road structures, even if the structure contracts or expands according to the change in air temperature, the gap absorbs it even if the structure contracts or expands, but a crack may not occur in the concrete structure. Since cracks are generated in the paved road pavement, the road pavement material placed on the gap formed between the concrete structures is cut to a certain width to form a stretch joint structure. When the elastic joint material is expanded or contracted according to the temperature change of the outside air, the elastic joint material expands or contracts to prevent cracking of the road pavement material.

When forming the elastic joint structure, a support member made of a steel plate was conventionally installed to cover the upper portion of the gap formed between the structures so that the elastic joints do not flow into the gaps between the concrete structures when laying the elastic joints. A jaw is formed between the upper surface and the steel plate, and in the case of soft ground, a step occurs between concrete structures due to uneven settlement, and in the case of a step or jaw, the elastic joint is not adhered to the concrete structure during filling and installation of elastic joints. Separation occurs between the member and the concrete structure. When the lubricating load generated by the vehicle passing through the vehicle is transmitted to the steel plate support member through the elastic joint, the support member moves like a seesaw, causing reflection cracks in the elastic joint to eventually prevent the expansion joint structure from being able to function. There is.

In order to solve this problem, the applicant (inventor) of the present invention developed a method using flame retardant fibers instead of steel plates as a support member, and registered patent No. 1157063, "Extensible joint structure of road structures and construction method thereof", patent registration No. 1355399 It has been patented on the construction of the road structure of the underground roadway and the bridge and its construction method. So far, it has been constructed in many fields. After cutting the paved road pavement to a certain width and crushing it, clean the cut section, then apply the primer, install the backing material, apply the elastic sealing material first, install the support member, apply the elastic sealing material secondary, install and compact the elastic joint, The new joint structure was constructed through a common series of work processes called finishing coating.

However, there are many problems in the construction and construction method of new joints of road structures that have been practiced and practiced so far. First, there are problems in that it is difficult to secure high-quality new joints due to too many and complicated work processes, not only a lot of work manpower and construction costs, but also a lot of time, and even a slight neglect of some work processes causes defects. have.

Second, a lot of fine dust is generated in the process of heating the aggregate entering the elastic joint and mixing it with the elastic sealing material containing asphalt, and not only hot heat and odor are generated, but also a loud noise occurs during the installation and compaction of the elastic joint. There is a problem that a lot of equipment required for each work process must be mobilized.

Third, elastic joints are installed in one large space called a cutting section that is formed by cutting and crushing the road pavement material, and the entire joints are compacted to form a stretched joint, so that numerous vehicles are running, so the elastic joints There is a problem that a jungle phenomenon occurs due to the application of a lubricating load, and a porthole is generated as the aggregate mixed with the elastic joint material is separated.

The present invention has been devised to solve the problems as described above, and the object of the present invention is to form a stretch joint of a road structure installed on an upper portion of a concrete structure to be connected, a number of uniformly formed in a certain shape. Constructed using a geocell filled with elastic joints in the space of the work, the work process is very simple, which significantly reduces the workforce, time and cost, and can form a high-quality expansion joint that does not generate portholes. , To provide a stretch joint structure and a construction method of a geocell filled with an elastic joint material and a road structure using the same.

The geocell filled with an elastic joint according to the present invention, arranges sheets having a certain width so as to overlap each other in the longitudinal direction, bonds adjacently overlapping sheets at regular intervals to form joints, and joins when the overlapping sheets are opened. A geocell manufactured to form a plurality of spaces by a non-bonding portion; It is composed of, including; an elastic joint material filled with an elastic sealing material and aggregate mixed in the space portion of the geocell; and characterized in that the elastic joint material is cured while being filled in the space portion of the geocell.

The expansion joint structure of a road structure using a geocell filled with an elastic joint according to the present invention is a road located above a spaced part between concrete structures in a road structure in which road pavement materials are installed on top of a concrete structure spaced apart at a predetermined gap. The pavement material is installed in a cut portion formed by cutting to a certain width, and the stretchable joint structure is a tape attached to cover a spaced portion bonded to a concrete structure at a bottom surface of the cut portion formed in the road pavement material; A geocell inserted into a cut portion formed in the road pavement and placed on an upper portion of the tape; The geocell is composed of a finishing material formed by applying an elastic sealing material to the upper portion of the geocell; including, wherein the geocell is filled with an elastic joint material mixed with an elastic sealing material and aggregate, compacted, and cured. It is characterized in that it is produced by being standardized in advance.

Preferably, the elastic sealing material applied to the top of the geocell flows between the side surface of the geocell and the vertical surface of the cut formed in the road pavement.

The construction method of the expansion joint structure of the road structure according to the present invention includes: cutting a road pavement material installed on a concrete structure spaced apart at a predetermined gap to a predetermined width to form a road pavement cutting part on the gap; Inserting and installing a perforated pipe into the gap between the concrete structures through the cut portion; Applying a primer to a bottom surface and a vertical surface of the cut portion formed in the road pavement material; Attaching a tape so as to close the spaced apart portion adhered to the concrete structure at the bottom surface of the cut portion; Inserting and installing a geocell that is cured by filling and compacting an elastic joint material in which an elastic sealing material and an aggregate are mixed in the space portion, and installing it; It is constructed through the step of forming a finishing material by applying an elastic sealing material to the upper portion of the geocell, and the geocell is characterized in that it is manufactured by being standardized in advance in a factory.

The elastic joint structure of a road structure using a geocell filled with an elastic joint material according to the present invention is elastic in one large space called a cutting part that is formed by cutting and crushing the road pavement when forming the elastic joint of the road structure. Rather than forming a joint and compacting it, the elastic joint is pre-filled in a number of spaces that are standardized in a certain form and uniformly formed, inserting the cured geocell into the cutting section, and then coating the finishing material on the upper part to expand and contract the joint. Since the construction is finished, the work process is very simple and simple, which significantly reduces and shortens the workforce and time, and since it does not require a lot of work processes compared to the existing construction method, there is no need to mobilize various equipment for construction accordingly. It is also possible to significantly reduce.

In addition, a plurality of spaces of a certain shape are formed in the geocell, and each space is filled with an elastic joint material mixed with an aggregate and an elastic sealing material, and then cured. The geocell is inserted into a cut formed by cutting a road pavement material. Therefore, multiple spaces, such as a honeycomb, are formed in one large space called a cutting part, and elastic joints are installed in each space, so that a large number of independent spaces are secured, so that contraction and expansion occur only within the space, so the vehicle travels. At the same time, even if the lubricating load is applied, each space disperses the load, so there is an effect of preventing the sliding phenomenon and increasing the pull-out resistance coefficient, so that the aggregate mixed in the expansion joint does not separate, so that the porthole does not occur in the expansion joint, so it is standardized. High-quality stretchable joints can be formed as standard.

1 is a view showing an embodiment of a geocell.
2 is a view showing a state in which an elastic joint is filled in a space formed in a geocell.
3 is a view schematically showing a stretch joint structure of a road structure using a geocell filled with an elastic joint material.
4 is a view showing a perforated tube.

The biggest technical feature of the expansion joint structure of a road structure using a geocell filled with an elastic joint according to the present invention is a stretch joint using a geocell that has been cured by filling an elastic joint in advance in a number of spaces uniformly formed. The construction is that the work process of constructing the expansion joint is very simple and simple, significantly reducing manpower, time and cost, and making it possible to form a high-quality expansion joint without portholes.

In the specification of the present invention, the 'road pavement material' refers to a surface on which the vehicle is driven on the upper surface by being paved on the top of the concrete structure. In general, the road pavement material is constructed by paving asphalt concrete or concrete. In addition, the expansion joint structure of the present invention applies equally to all road structures that vehicles can pass through, such as underground roadways, bridges, tunnels, elevated roadways, river rehabilitation structures, or runner windows, and ecological bridges where vehicles do not carry. Make it known in advance.

So far, Geocell has been mainly used for reinforcing soft ground, reinforcing road steps, and reinforcing slopes to reinforce the shear strength and support of the ground by increasing engineering characteristics such as stiffness by placing and compacting filling materials such as soil and gravel in the space part. In the present invention, by using it to form a stretch joint of the road structure is to have a remarkable action effect that was unexpected than the method of constructing the stretch joint so far.

The geocell 10 according to the present invention is arranged so that the sheets 11 having a certain width overlap each other in the longitudinal direction, and the adjacent sheets 11 are bonded to each other at regular intervals to form a junction 13, When the sheet is opened, a plurality of spaces 12 are formed by the joining portion 13 and the non-bonding portion 14 (see FIG. 1). The reference numeral 13 'is a support, which is attached to the junction 13 located on the outermost side to maintain a honeycomb shape.

The material of the sheet 11 can be a thermoplastic synthetic resin such as polypropylene (PP), high-density polyethylene (HDPE), glass fiber, carbon fiber, paper, non-woven fabric, and various materials. If glass fiber or carbon fiber is used, It is effective to increase the pull-out resistance coefficient and friction coefficient. In addition, the shape of the space portion 12 may be formed in various shapes such as a honeycomb shape, a wave shape, or a rhombus shape, and it is most preferable to use a honeycomb shape for load distribution, and when the honeycomb shape is used, the junction 13 Is formed by making a surface adhesion or by bonding both sides at regular intervals.

The elastic joint 15 is mixed with an elastic sealing material and aggregate to fill the space 12 of the geocell and then compacted and cured. As such, the geocell filled with the elastic joint 15 is manufactured in advance in the factory. Since it is manufactured in a standardized standard, it is possible to guarantee a certain quality.

The elastic sealant is made of asphalt, rubber, oil, admixture, etc. as a main component, and in a solid state, when used, it is heated to about 220 ° C and in a gel state (like 'porridge') It is made of and applied as a kind of adhesive functioning material, which is marketed as a product, and a detailed description thereof will be omitted because the object of the present invention is not an elastic sealing material.

The expansion joint structure of the road structure using the geocell 10 filled with the elastic joint material according to the present invention is a concrete structure in a road structure in which the road pavement material 30 is placed on top of a concrete structure 20 spaced apart at a predetermined gap. (20) The spaced portion between the road pavement (30) located on the upper portion is installed to the cut portion formed by cutting to a certain width, the expansion and contraction structure to the spaced part of the bottom surface of the cut portion formed in the road pavement (30) The attached tape 16 and the geocell 10 filled with the elastic joint 15 are inserted into the cutting part, and provided with a finishing material 17 formed by being applied to the top of the geocell 10, and a concrete structure. The spaced portion between the (20) is configured by inserting the perforated tube (21). In addition, a primer functioning as a kind of adhesive function is applied to the bottom surface and the vertical surface of the cut portion formed in the road pavement 30.

The tape 16 is configured to cover and close the open upper portion of the gap formed between the concrete structure 20 in which the perforated pipe 21 is inserted, and the material or material is not particularly limited and has a certain width and some Any adhesive tape can be used. Since the primer is applied to the cut portion, it may be covered by using a fiber member to close the upper portion of the gap.

The geocell 10 uses an elastic joint 15 mixed with an elastic sealing material and an aggregate in the space 12 and is compacted and cured. As such, the elastic joint 15 is attached to the space 12 The filled geocell is standardized and manufactured at the factory. The geocell 10 in which the elastic joint material 15 is filled in the space portion 12 is inserted into the cut portion formed in the road paving material 30 and placed on the upper portion of the tape 16 to be installed.

Since the geocell 10, which is divided into a plurality of spaces and filled with elastic joints 15 in each space, is inserted into the cut portion formed by cutting the road pavement material, a plurality of spaces such as a honeycomb shape in one large space called the cut portion While this is formed, elastic joints 15 are installed in each space, so that a plurality of spaces independent of the expansion joints are secured, so that contraction and expansion occur only within the space. One of the great advantages of the present invention is that since the load is distributed to prevent the phenomenon of being pushed and to increase the pull-out resistance coefficient, aggregates mixed in the stretchable joint 15 are not separated, so that no hole is generated in the stretchable joint. It is one.

The finishing material 17 is formed by applying an elastic sealing material to the upper portion of the geocell 10 with a certain thickness, and is coated with an elastic sealing material containing an asphalt stock solution to finish the upper part of the expansion joint by waterproofing and draining problems. To solve this, and maintain the continuity with the road pavement 30 road surface in the expansion joint significantly improves the flatness of the road surface to suppress the occurrence of vibration or noise during vehicle traffic and to ensure the safety of the vehicle driving. In addition, since the elastic sealing material applied to the top of the geocell 10 flows between the side surface of the geocell 10 and the vertical surface of the cut formed in the road paving material 30, the geocell 10 is the road paving material 30 It is well adhered to the vertical wall of the cut surface formed in the can maintain the adhesion state.

The perforated pipe 11 is made of a tubular shape of a certain diameter by weaving a member of a line made of synthetic resin such as polyester (see FIG. 4), in the gap between the concrete structures 20 spaced apart at regular intervals. Inserted and installed, groundwater, etc. that penetrate into the gap enters the perforated pipe 21 through a plurality of holes formed in the perforated pipe 21 and is discharged to a side opening formed outside the road structure.

Briefly explaining the construction method of the expansion joint structure of the road structure according to the present invention, cutting the road pavement material laid on the top of the concrete structure spaced apart by a predetermined gap to form a road pavement cutting part on the top of the gap (S1) ), Step of inserting and installing the perforated pipe 21 in the gap between the concrete structures through the cut (S2), applying a primer to the bottom and vertical surfaces of the cut formed in the road pavement (S3), concrete at the bottom of the cut The step of attaching the tape 16 to cover and close the spaced part of the structure (S4), the elastic joint 15 mixed with the elastic sealing material and the aggregate in the space portion 12 is filled and compacted to cure the geocell ( 10) by inserting and installing the cutting portion (S5), and applying the elastic sealing material to the top of the geocell to a certain thickness to construct the finishing material (17).

In the construction method of the expansion joint using the geocell 10 according to the present invention, the elastic joint 15 is pre-filled in a plurality of spaces uniformly formed in a predetermined shape, and the cured geocell is inserted into the cutting portion, and the upper portion thereof Since the construction of the new joint is completed by simply coating the finishing material (17), the work process is very simple and simple, which significantly reduces and shortens the workforce and time, and requires less work process compared to the existing construction method. One of the technical features is that there is no need to mobilize a variety of equipment for the equipment, so the cost can be significantly reduced.

The above description is illustrative of the present invention, and the embodiments disclosed in the specification are not intended to limit the technical idea of the present invention, but are intended to explain the present invention. Various modifications and variations will be possible without departing from the technical idea of. Therefore, the protection scope of the present invention is to be interpreted by the matters described in the claims, and technical matters within the equivalent scope thereof should be interpreted to be included in the scope of the present invention.

10: Geocell 11: sheet
12: space 13: junction
13 ': Support 14: Non-adhesive part
15: elastic joint material 16: tape
17: finishing material
20: concrete structure 21: perforated pipe
30: road pavement

Claims (6)

delete delete In the road structure where the road pavement material is placed on the upper part of the concrete structure spaced apart at a predetermined gap, in the expansion joint structure installed on the cutting portion formed by cutting the road pavement material located on the spaced part between the concrete structures to a certain width,
The expansion joint structure,
A tape attached to cover a spaced part by being adhered to a concrete structure at the bottom surface of the cut portion formed in the road pavement;
A geocell inserted into a cut portion formed in the road pavement and placed on an upper portion of the tape;
A finishing material formed by applying an elastic sealing material to a predetermined thickness on the top of the geocell;
It comprises,
The geocells are arranged such that sheets having a certain width overlap each other in the longitudinal direction, and the adjacent overlapping sheets are bonded at regular intervals to form a joint, and when the overlapping sheets are opened, a plurality of spaces are formed by the joints and the non-joints. The road using a geocell filled with elastic joints, characterized in that the elastic joints mixed with elastic sealing material and aggregate are filled, compacted, and cured, and manufactured in advance in the factory. Structure of expansion joint of structure.
According to claim 3,
The elastic sealing material applied to the upper portion of the geocell flows between the side surface of the geocell and the vertical surface of the cut formed in the road pavement material.
Cutting a road pavement material installed on a concrete structure spaced apart at a predetermined gap to a predetermined width to form a road pavement cutting part on the gap;
Inserting and installing a perforated pipe into the gap between the concrete structures through the cut portion;
Applying a primer to a bottom surface and a vertical surface of the cut portion formed in the road pavement material;
Attaching a tape so as to cover and close the spaced apart portion by adhering to the concrete structure at the bottom surface of the cut portion;
Inserting and installing a geocell that is cured by filling and compacting an elastic joint material in which an elastic sealing material and an aggregate are mixed in the space portion, and installing it;
Forming a finishing material by applying an elastic sealing material to the top of the geocell to a predetermined thickness;
It is constructed through, and the geocell is standardized in the factory, and is constructed in advance.
According to claim 3,
The elastic sealing material is an expansion joint structure of a road structure using a geocell filled with an elastic joint, characterized in that it is made of asphalt, rubber, oil, admixture as a main component.

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