KR102049996B1 - Perforated pipe type underground driveway expansion joint structure for drain and sinking prevention, and construction method for the same - Google Patents

Abstract

The present invention relates to a perforated pipe insertion type expansion joint structure of an underpass unit, for preventing subsidence, and a construction method for an expansion joint. According to the present invention, the construction method for an expansion joint includes: a first step of removing an existing road pavement material installed in the upper part of an expansion joint and formed between asphalt concrete pavement units; a second step of installing a perforated pipe at an upper end of a gap of the expansion joint; a third step of installing a bending type steel sheet reinforcing member for the perforated pipe installed at the upper end of the gap of the expansion joint to be installed on the inner side bent upwards and, also, filling a space between the perforated pipe and the bending type steel sheet reinforcing member with a sand filling unit; and a fourth step of completing the perforated pipe insertion type expansion joint structure of the underpass unit by constructing an elastic polymer reforming asphalt concrete layer in the upper part of the bending type steel sheet reinforcing member. According to the present invention, the perforated pipe insertion type expansion joint structure of the underpass unit has excellent adhesion between existing asphalt concrete and elastic polymer reforming asphalt concrete with improved performance. Also, the perforated pipe insertion type expansion joint structure of the underpass unit has excellent usage performance in passing for a long term by having excellent driving stability of a vehicle, durability, and deformation resistance.

Description

Perforated Pipe Type UNDERGROUND DRIVEWAY EXPANSION JOINT STRUCTURE FOR DRAIN AND SINKING PREVENTION, AND CONSTRUCTION METHOD FOR THE SAME}

The present invention relates to the expansion joint structure and expansion joint construction method of the underground pipe subsidence prevention hole insertion, more specifically, the construction of expansion joint construction method consisting of bent reinforcement plate and perforated pipe, elastic polymer road sealing material with improved performance In addition, it has excellent adhesion performance and durability with existing Ascon packaging, and also has excellent physical properties such as chemical resistance, waterproofness, deformation and settlement resistance, and rolling resistance, and prevents the expansion joint from sagging or the impact of passing through the vehicle due to long-term use. It relates to the expansion joint structure and expansion joint construction method for the insertion hole subsidence prevention underground roadway to provide excellent usability.

Existing underground roadway expansion joints are constructed by inserting reinforcement plates using steel plates or fiberglass panels into underground roadway joints and placing road seals after attaching reinforcement plates.

However, in the existing construction method, when the heavy vehicle repeats the traffic for a long time, the road sealing material gradually sinks due to deformation and vibration, and the impact occurs on the recessed and uneven part when the vehicle passes. And continued traffic shocks can progress to damage to nearby packaging.

Accordingly, in the technical field, the resistance to sinking load is increased, anchoring is fixed to anchors to suppress the separation or vibration of the reinforcement plate, and the service life is increased to improve the durability and weather resistance, and long-term vehicle traffic, climate change, structure In addition to improving the resistance of deformation and the like, technology development for improving drainage performance for long-term use is required.

On the other hand, Korean Patent Application No. 10-2010-0071547 "construction method for the construction of expansion joints drainage of road structures (prior art 1)" is the number of roads infiltrating the asphalt concrete pavement between the asphalt concrete pavement layer and the concrete slab layer It provides a method of constructing new joints of drainage of road structures that can be smoothly drained to prevent lifting of asphalt concrete pavement by road surface water, and drains the road surface water quickly even if the road surface is high. The present invention relates to a technique for minimizing road surface defects.

In addition, the Republic of Korea Patent Application No. 10-2017-0060446 "Stretch expansion device for the road using mastic asphalt and its construction method (prior art 2)" has excellent durability and prevents the groundwater to be discharged onto the road Road expansion joint using mastic asphalt to perform waterproof function and its construction method, a certain amount of powdered stone powder on asphalt (AP, Asphalt) modified with polymer and natural asphalt (TLA, Trinidad Lake Asphalt) Using this mixed mastic asphalt, the mastic is able to maintain durability without being damaged by repeated traffic loads of the vehicle, and to perform a waterproof function that fundamentally blocks groundwater from being discharged onto the road. It is to provide an expansion joint device for a road using asphalt and a construction method thereof.

In addition, the Republic of Korea Patent Application No. 10-2012-0003832 "Stretch joint structure of the road structure and its construction method (prior art 3)" is used between the concrete structure when filling the elastic joint using the support member of the mesh By preventing the elastic joint material from adhering to the gap, the elastic joint member may be closely adhered to the concrete structure so that the elastic joint member and the concrete structure are not separated from each other, and the support member does not move even when the dynamic load of the vehicle is applied. It relates to a technique to prevent the occurrence of cracks.

In addition, the Republic of Korea Patent Application No. 10-2011-0014519 "extension joint waterproofing material of the structure including the road and bridge and the construction method of the expansion joint using the same (conventional technique 4)" is the expansion of concrete structures such as road The present invention relates to a technique for preventing groundwater from leaking to the road through the cavities and inducing rapid drainage to prevent water film phenomenon and freezing, and to shorten the air.

However, the above-described prior arts provide a technique for induction of drainage or long-term use, but there is a limitation in that it cannot be provided at the same time, and there is a problem in that adhesion between the repaired construction surface and existing asphalt concrete falls.

Korean Patent Application No. 10-2010-0071547 "METHOD FOR CONSTRUCTING EXPANSION JOINT DRAIN OF ROAD STRUCTURE" Republic of Korea Patent Application No. 10-2017-0060446 "Expansion JOINT FOR CONNECTING SLABS OF A ROAD STRUCTURE AND METHOD FOR CONSTRUCTION THE SAME" Republic of Korea Patent Application No. 10-2012-0003832 "FLEXIBLE JOINTING STRUCTURE OF ROAD CONSTRUCTION AND METHOD FOR MAKING FLEXIBLE JOINTING STRUCTURE" Republic of Korea Patent Application No. 10-2011-0014519 "Expansion JOINT WATER PROOF MATERIAL OF STRUCTURE INCLUDING ROAD AND BRIDGE, AND CONSTRUCTING METHOD OF EXPANSION JOINT PART USING THIS) "

The present invention is to solve the above problems, by using a road reinforcement using a bent reinforcement plate with improved rigidity and an improved elastic polymer with improved durability and weather resistance, deflection of expansion joints due to long-term vehicle traffic and It is to provide a expansion joint construction and expansion joint construction method for the insertion of underground hole subsidence prevention hole to prevent settlement.

In addition, the present invention is the expansion joint structure of the underground hole insertion subsidence prevention hole for fixing the bent reinforcement plate to the bent reinforcement plate to prevent the deformation of the road sealing material due to the vibration of the bent reinforcement plate by fixing the bent reinforcement plate And to provide a joint construction method.

In addition, the present invention is to insert the hole tube to smoothly discharge the groundwater and the like introduced into the joint, and fills the sand around the perforated pipe to prevent foreign matter from penetrating into the perforated pipe so that the service life of the perforated pipe can be extended The purpose of the present invention is to provide a construction method for expansion joint construction and expansion joint construction for inserting subsidence prevention underground passage part.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the construction of the expansion joint construction method for the underground submersion prevention underground insertion section according to an embodiment of the present invention, is formed between the asphalt concrete paving portion, the first to remove the existing road seal material on the upper portion of the expansion joint step; A second step of installing the perforated pipe in the upper part of the gap between the expansion joints; A third step of installing a bent steel plate reinforcing member so that the hole pipe disposed at the upper end of the gap of the expansion joint is located upwardly bent, and filling a space between the hole pipe and the bent steel plate reinforcing material; And a fourth step of completing the expansion joint structure of the perforated tube insertion settlement preventing underground settlement part by constructing an elastic polymer-modified ascon layer on the bent iron plate reinforcement between the ascon packing parts on both sides. Characterized in that it comprises a.

At this time, the present invention, between the third step and the fourth step, the bent iron plate using a plurality of anti-separation anchors in a row on one side of the plate portion formed on both sides of the bent surface on the bent steel plate reinforcement material Fixing one side of the expansion joint formed of the reinforcement material and the concrete material; It characterized in that it further comprises.

In addition, the present invention, between the first step and the second step, the step of inserting the backup material between the adjacent concrete member constituting the expansion joint; It characterized in that it further comprises.

In addition, in the present invention, the hole pipe of the second step is characterized in that it is located above the backup material.

In order to achieve the above object, the construction of the expansion joint structure of the underground submersion prevention underground insertion section according to an embodiment of the present invention, after removing the existing road sealing material located between the ascon pavement and the expansion joint, the gap between the expansion joint Perforated pipes installed at the top; A bent iron plate reinforcement provided to allow the hole pipe disposed on the gap upper end of the expansion joint to be positioned inwardly bent upward, and provide a space for filling the silica sand filling portion in the space between the hole pipe and the hole; And an elastic polymer-modified ascon layer between the ascon packaging parts on both sides and being constructed on the bent steel plate reinforcement. Characterized in that it comprises a.

Construction of expansion joint construction and expansion joint construction of underground hole insertion settlement subsidence prevention method according to an embodiment of the present invention, excellent adhesion between modified polymer modified ascon and conventional ascon and improved vehicle running stability, durability, deformation resistance It not only shows excellent usability during long-term passage, but also has excellent properties such as chemical resistance, waterproofing and salt resistance, so it is excellent in construction of underground joints.

In addition, the expansion pipe construction and expansion joint construction method of the hollow hole insertion type subsidence prevention portion according to another embodiment of the present invention, due to the deflection resistance of the bent-type reinforcement plate is excellent in the impact resistance generated when passing the vehicle and the subsequent sag or vibration It can prevent the deformation, sagging and jungle of additional expansion joints due to the construction, and can achieve excellent construction effect.

In addition, the expansion pipe structure and expansion joint construction method of the hole-type subsidence prevention underground roadway according to another embodiment of the present invention, the hole pipe of the lower bent reinforcement plate is excellent in discharge performance, such as groundwater flowing out from the bottom of the joint The coated silica sand or non-woven fabric prevents the elastic polymer-modified ascon and other foreign substances from being stuck in the perforated pipe when placing the elastomeric modified ascon, which is a road sealing material, to prevent the defect due to leakage of the expansion joint by increasing the usability of the perforated pipe.

1 is a view showing the expansion joint structure 100 of the hole-type insertion settlement prevention underground roadway portion according to an embodiment of the present invention.
2 to 4 is a view for explaining the construction method of the expansion joint construction of the underground roadway subsidence prevention portion insertion hole according to an embodiment of the present invention.
5 is a view showing the expansion joint structure (100a) of the underground pipe insertion prevention settlement submerged hole insertion hole according to another embodiment of the present invention.
FIG. 6 is an enlarged view of a portion A of the expansion joint structure 100a of the hole-type subsidence preventing underground passage part of FIG. 5.

Hereinafter, the detailed description of the preferred embodiment of the present invention will be described with reference to the accompanying drawings. In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted when it is deemed that they may unnecessarily obscure the subject matter of the present invention.

1 is a view showing the expansion joint structure 100 of the hole-type insertion settlement prevention underground roadway portion according to an embodiment of the present invention. Referring to Figure 1, a hollow pipe structure of the insertion prevention settlement submerged underground pipe portion 100 is a hole pipe 110, silica sand filling portion 120, bending type steel plate reinforcement 130, anti-separation anchor 140, elastic polymer modification Ascon layer 150, may include the ascon packaging unit 160.

The hole tube 110 is formed on the top of the backing material (3) formed of a waterproof material.

To this end, the backing material 3 is formed between the asphalt concrete pavement 160 and in the state in which the existing road sealing material 1 is removed from the upper portion of the expansion joint 2 formed by the neighboring concrete member. It can be constructed in such a way that it is inserted into the space between the neighboring concrete members constituting the puddle 2.

The silica sand filling part 120 is formed on the backing material (3) above the hole hole 110 is bent upward on the bent steel plate reinforcement 130 so that the bent surface 131 having an arc cross section of the hole hole 110 When positioned in the form of being mounted on the upper surface, it may be filled in the space between the hole tube 110 and the bent iron plate reinforcement (130). Accordingly, not only the impurities contained in the inflow water absorbed into the hole hole 110 by the silica sand filling unit 120 may be filtered, and the drainage of the inlet water may be promoted to the hole hole 110 and the blockage of the hole hole 110 may be prevented. Can be used to increase the service life of the expansion joint structure 100 to prevent underground settlement submerged pipe insertion. Accordingly, the above-described hole tube 110 has a hole formed on the surface, thereby inducing the inflow water through the hole so that the inflow water flows into the side drainage channels (not shown) formed on one side or both sides of the hole tube 110. do.

The bent iron plate reinforcement 130 may be formed of a flat plate portion 132 formed on both sides of the bent surface 131 as shown in FIG. 4A.

A plurality of anti-separation anchors 140 are formed in one of the two flat plate portions 132 constituting the bent steel plate reinforcement 130 in the longitudinal line of the flat plate portion 132, thereby bending the sheet steel reinforcement 130 And prevents the separation of one concrete member constituting the expansion joint (2) of the steel sheet reinforcement 130 through a construction method for fixing one side of the expansion joint (2) formed of concrete material, By suppressing the vibration of 130), in the expansion joint structure 100 of the perforated underground insertion prevention section of the perforated pipe, the service life is increased according to the improvement of resistance such as long-term vehicle traffic, climate change, deformation of the structure, and durability and weather resistance. You can.

The anti-separation anchor 140 is composed of an anchor bolt 141 and an anchor nut 142 as shown in FIG. 1, thus expanding the anchor bolt 141 through a fastening hole (not shown) formed in the bent steel plate reinforcement 130. Bolting is performed on the upper surface of one concrete member constituting the joint portion 2, and anchor bolts 142 for anchor bolts 141 located on the upper surface of the bent steel plate stiffener 130, the upper portion By tightening, it is possible to improve the fastening force between the bent iron plate reinforcement 130 and one concrete member constituting the expansion joint (2). On the other hand, the anti-separation anchor 140 is fixed to the bent steel plate stiffener 130 for only one of the two concrete members constituting the expansion joint (2) is located above the bent steel plate stiffener 130 Fixing is performed on the remaining concrete members by the load of the elastic polymer-modified ascon layer 150, in order to prevent the abuse of the unnecessary release preventing anchor 140.

The elastic polymer modified ascon layer 150 is connected to the concrete member constituting the expansion joint part 2 through the anti-separation anchor 140 on the bent iron plate reinforcement 130, and then the upper portion of the bent iron plate reinforcement 130. And, by being installed between the asphalt concrete packing unit 160, it is possible to complete the expansion joint structure 100 of the underground pipeline insertion settlement prevention underground hole.

The construction of the expansion-type underground joint subsidence prevention expansion joint structure 100 according to the present invention constructed as described above solves the expansion joint settlement, deformation problems, leaks, pinholes, crack diffusion problems as shown in Table 1, compared to the conventional method Can be.

Conventional method The present invention Remarks Ascon plate sinks or deforms due to iron plate vibration and deviation due to load and vibration Curved bending plate and release prevention anchors prevents ascon deformation and settlement even under load and vibration Excellent in the present invention in settlement and deformation of expansion joint Deformation of other materials, crack diffusion, and damage after elastic ascon due to leakage Leakage is discharged to the side drain through the perforated pipe to prevent pinholes in summer and freezing in winter, improving the durability of elastic ascon Excellent invention in leakage, pinhole and crack diffusion

2 to 4 is a view for explaining the construction method of the expansion joint construction of the underground submersion prevention underground roadway insertion hole according to an embodiment of the present invention, in particular, Figure 3 shows that the backup material 3 is installed in the process of Figure 2c The backing material 3 area | region of FIG. 2C is enlarged for drawing.

Looking below, as shown in Figure 2a, conventional road sealing material (1) is formed on the expansion joint (2) formed of a concrete material. Accordingly, it is formed between the asphalt concrete pavement 160 as shown in Figure 2b, and removes the existing road sealing material (1) on the expansion joint (2). Then, the backing material 3 is inserted between the neighboring concrete members constituting the expansion joint 2 as shown in FIG.

Next, as shown in FIG. 4A, the air hole 110 is installed at the upper end of the gap of the expansion joint 2 corresponding to the upper portion of the backup material 3.

Thereafter, as shown in FIG. 4B, the bent steel plate reinforcement 130 is installed such that the perforated pipe 110 disposed at the upper end of the gap of the expansion joint 2 is bent upward, and the perforated pipe 110 and the bent iron plate are installed. By filling the silica sand filling part 120 in the space between the reinforcing material 130, as well as filtering the impurities contained in the inflow water absorbed into the oil hole pipe 110 by the silica sand filling part 120, inflow water into the oil hole pipe 110. Promoting the drainage and prevent the clogging of the perforated pipe 110 may increase the service life of the expansion joint structure 100 to prevent the insertion of the hollow hole underground settlement.

Subsequently, in the bent steel plate reinforcement 130 as shown in FIG. 4C, the bent shape is formed using a plurality of anti-separation anchors 140 in a row on one side of the plate portions 132 formed on both sides of the bent surface 131. By fixing one side of the steel sheet reinforcement 130 and the expansion joint (2) formed of concrete material, not only to suppress the separation or vibration of the steel plate reinforcement (130), but also increase the service life, improve durability and weather resistance In addition, it can improve resistance to long-term vehicle traffic, climate change and structural deformation.

Then, as shown in Figure 4d between the ascon pavement 160 on both sides by constructing the elastic polymer-modified ascon layer 150 on the bent iron plate reinforcement 130, the insertion hole expansion type underground joint expansion prevention structure 100 Can be completed.

In the present invention, as the material of the elastomeric modified ascon layer, it is preferable to use a material which can prolong the life due to its excellent properties such as durability, water resistance, chemical resistance, and water resistance.

As an example of the elastomeric modified ascone used in the present invention, a mixture of aggregate is used in an asphalt composition comprising asphalt, SBS (Styrene Butadiene Styrene) resin, SB (Styrene Butadiene) rubber, plasticizer, dispersant, thickener, and water-soluble silicate Can be.

Specifically, 0.1 to 10 parts by weight of SBS resin, 0.5 to 10 parts by weight of SB rubber, 0.5 to 15 parts by weight of plasticizer, 0.1 to 10 parts by weight of dispersant, 0.5 to 15 parts by weight of thickener, and 0.1 to 10 parts by weight of asphalt based on 100 parts by weight of asphalt. 5 parts by weight may be mixed and aggregates may be used therein.

In the present invention, the SBS resin may use a weight average molecular weight in the range of 50,000 ~ 200,000.

In addition, in the present invention, the SB latex is a latex prepared by emulsion polymerization of styrene monomer and butadiene monomer as a main raw material, and may have a weight average molecular weight in the range of 50,000 to 300,000.

In addition, the plasticizer in the present invention serves to lower the viscosity at high temperatures and to facilitate the mixing with the aggregate when making ascone, terephthalate metal salt, stearic acid metal salt, low molecular weight polyethylene (weight average molecular weight 500 ~ 10,000 ) May be used.

In addition, the dispersing agent in the present invention is to impart polarity to the whole composition to improve the adhesion to the aggregate, and to uniformly disperse the compound and to improve the cold resistance, organic acids including stearic acid, palic acid, terephthalic acid, lauric acid And oils selected from oils such as aromatic oils, aliphatic oils, castor oils, cottonseed oils and mineral oils.

In addition, the thickener in the present invention serves to increase the plastic deformation resistance, polyethylene, ethylene vinyl acetate (EVA), polybutene, polypropylene and the like can be used.

In addition, in the present invention, the water-soluble silicate may be used Na ₂ SiO ₃ , which maintains a soft property such as rubber to maintain flexibility even at low temperatures in winter to prevent cracking.

In addition, in the present invention, an inorganic acid may be additionally used in the asphalt composition, and the inorganic acid serves to increase the mechanical stability of the ascon composition as well as the storage stability, and may be included in the range of 0.1 to 10 parts by weight based on 100 parts by weight of the asphalt. Can be. Hydrochloric acid, sulfuric acid, phosphoric acid, boric acid, etc. can be used as an example of the said inorganic acid.

In the present invention, as aggregate, coarse aggregates and fine aggregates may be used as natural aggregates, and coarse aggregates pass through 25 mm to 60 wt% of 15 mm sieves while passing through 95 mm to 00 wt% of 30 mm sieves, and 0 to 10 wt% of 5 mm sieves. Passing, having a particle size specification that passes 0 to 5% by weight of 2.5mm sieve is used, the fine aggregate is preferably used having a particle size standard remaining in the 0.075mm sieve while passing through the 2.5mm sieve.

The subconducting-type subsidence preventing underground passage expansion joint structure 100 according to the present invention constructed by using the ascon material according to the embodiment of the present invention described above in the elastomeric modified ascon layer has the problem of settlement and deformation of the expansion joint. , Leakage, pinhole, crack diffusion problem can be solved.

On the other hand, Figure 5 is a view showing the expansion joint structure (100a) of the underground pipeline insertion settlement prevention underground settlement according to another embodiment of the present invention. FIG. 6 is an enlarged view of a region A of the expansion joint structure 100a of the hole-type subsidence preventing underground passage part of FIG. 5.

Referring to Figure 5 and Figure 6, the expansion pipe structure 100a, the underground pipe insertion prevention settlement submerged hole hole 110, nonwoven fabric 110a, sand filling portion (120a), bending type iron plate reinforcement (130), departure prevention The anchor 140, the elastomeric modified ascon layer 150, and the ascon packaging unit 160 may be included.

In order to form such a perforated pipe-type subsidence preventing expansion underground structure expansion joint structure (100a), as shown in Figure 2a, after removing the road sealing material (1) formed on the existing expansion joint (2) formed of a concrete material, In the two neighboring concrete members constituting the expansion joint (2), the neighboring edge surface is formed by forming a rectangular groove as a whole through a blind process, and the perforated pipe 110 wrapped with the nonwoven fabric 110a in the rectangular groove. ) Can be added. For this purpose, it is preferable that the height and width of the blind grooves treated as described above are equal to or larger than the diameter of the perforated tube 110 or 1 to 5 mm.

Then, after filling the sand filling portion (120a) in the square groove, the expansion joint (2) to the bent steel plate reinforcement 130 to the upper portion filled with the sand filling portion (120a) as in Figures 4b to 4d By installing the bent steel plate reinforcement 130 so that the hole tube 110 disposed on the gap top of the bent to the inside of the bent surface 131 bent upwards, absorbed into the hole pipe 110 by the sand filling portion (120a). By filtering the non-homogeneous impurities contained in the influent to be filtered first and the homogeneous impurities through the nonwoven fabric 110a to prevent the clogging of the perforated pipe (110), to promote the drainage of the influent into the perforated pipe (110) To increase the service life of the insertion hole expansion type underground joint expansion joint structure 100. Finally, the plurality of anti-separation anchors in a row on one side of the two plate portion 132 constituting the bent iron plate reinforcement 130 of the form that is mounted on the sand filling portion (120a) and the upper surface of the two concrete members By fixing the side of the bent-type steel sheet reinforcement 130 and the expansion joint (2) formed of a concrete material using the 140, not only to suppress the separation or vibration of the steel plate reinforcement 130, but also increase the service life, durability And not only improve weather resistance, but also improve resistance to long-term vehicle traffic, climate change, structural deformation, and the like.

On the other hand, even in the perforated pipe-type subsidence preventing expansion passage structure 100a, the backing material 3 is formed in the upper part of the space between the adjacent concrete members constituting the expansion joint part 2 after forming the square groove. By inserting, the leakage by the backing material (3) is prevented from flowing into the lower portion of the expansion joint (2) and the inflow water to flow to the side drain (not shown) formed on one or both sides of the perforated pipe (110) Play a role.

And when the through-hole is formed in the bottom surface of the hole tube 110 in the present invention, the fluid is discharged in the direction of the backing material 3 through the bottom surface of the hole hole is reduced drainage capacity. Therefore, in order to prevent the drainage ability from dropping because the ground drying speed may be slowed, in the past, fluids such as vinyl or a tent are discharged without penetrating into the ground in the lower part of the perforated pipe. There was a downside to wasting it.

Accordingly, in the present invention, the perforated pipe 110 is provided with an extruder for sealing the through-holes in order to overcome such a disadvantage in the manufacturing process, by extruding the extrudate in the form of a thin film in the form of a thin plastic film through the extruder nozzle Through the manufacturing method to block the bottom surface of the through-holes of the through-holes 110 may be produced through the hole is blocked portion is located in the lower surface.

As described above, the present specification and drawings have been described with respect to preferred embodiments of the present invention, although specific terms are used, it is only used in a general sense to easily explain the technical contents of the present invention and to help the understanding of the present invention. It is not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention can be carried out in addition to the embodiments disclosed herein.

100, 100a: Expansion joint structure of underground roadway part
110: perforated pipe 110a: nonwoven fabric
120: silica filling part 120a: sand filling part
130: bent steel plate reinforcement 140: departure prevention anchor
150: elastic polymer modified ascon layer 160: ascon packaging part

Claims (5)

Road sealing material is formed on the upper portion of the existing expansion joint formed of concrete material and formed between the ascon pavement on both sides, the existing road sealing material on the upper portion of the expansion joint is removed, and the neighbor forming the expansion joint A first step of inserting a backup material between the concrete members; Holes are formed on the surface to guide the inflow through the hole to the inlet flows into the side drainage formed on one side or both sides to install a hole in the top of the gap of the expansion joint corresponding to the upper backing material Two steps; The bent steel plate reinforcement is installed so that the hole pipe disposed in the gap upper region of the expansion joint portion is inwardly bent upward, and in the space between the hole and the bent plate steel reinforcement, in the inflow water absorbed by the hole pipe A third step of including an impurity filtering included, a sand filling part for promoting drainage of the inflow water into the hole pipe and promoting drainage of the inflow water into the hole pipe; A fourth step of fixing the expansion joint formed of the bent steel plate reinforcement and the concrete material by using a plurality of release preventing anchors to prevent the bending and the vibration suppression of the bent steel plate reinforcement material; And a fifth step of completing the expansion joint structure of the penetration-type subsidence preventing underground passage part by constructing an elastic polymer-modified ascon layer on the bent iron plate reinforcement between the ascon pavement portions on both sides. Including;
The elastomeric modified ascone forming the elastomeric modified ascon layer of the fifth step is aggregate in an asphalt composition mixed with asphalt, SBS (Styrene Butadiene Styrene) resin, SB (Styrene Butadiene) rubber, plasticizer, dispersant, thickener, and water-soluble silicate To use a mixture, but with respect to 100 parts by weight of asphalt SBS resin 0.1 to 10 parts by weight, SB rubber 0.5 to 10 parts by weight, plasticizer 0.5 to 15 parts by weight, dispersant 0.1 to 10 parts by weight, thickener 0.5 to 15 parts by weight and 0.1-5 parts by weight of water-soluble silicate is mixed and aggregates are used,
SBS resin, the weight average molecular weight is used in the range of 50,000 to 200,000,
SB latex is a latex manufactured by emulsion polymerization of styrene monomer and butadiene monomer as a main raw material, and uses a weight average molecular weight in the range of 50,000 to 300,000.
The plasticizer functions to reduce viscosity at high temperatures and at least one of a terephthalate metal salt, a stearic acid metal salt and a low molecular weight polyethylene (weight average molecular weight 500 to 10,000) is used to smoothly mix with aggregate when making ascone.
Dispersants are organic and aromatic oils, including aliphatic oils, castor oils, cottonseed oils, minerals, including stearic acid, palic acid, terephthalic acid, lauric acid, to impart polarity to the overall composition to improve adhesion to aggregates and to disperse the compounds uniformly. One or two or more kinds selected from oils such as oils are used,
Thickener, at least one of polyethylene, ethylene vinyl acetate (EVA), polybutene, polypropylene is used to increase the plastic deformation resistance,
The water-soluble silicate, Na ₂ SiO ₃ is used to maintain flexibility even at low temperatures in winter to prevent cracking,
As the aggregate, coarse aggregates and fine aggregates are used as natural aggregates, and coarse aggregates pass through 25 mm to 60 wt% of 15 mm sieves and pass through 0 mm to 10 wt% of 5 mm sieves, passing 95 mm to 00 wt% of 30 mm sieves, and 2.5 mm. It is used to have a particle size specification that passes through 0 to 5% by weight of the mm sieve, and the fine aggregate is used to have a particle size standard remaining in the 0.075mm sieve while passing through the 2.5mm sieve,
In addition to the inorganic composition to increase the mechanical strength and storage stability in the asphalt composition, at least one of hydrochloric acid, sulfuric acid, phosphoric acid, boric acid is used in the range of 0.1 to 10 parts by weight based on 100 parts by weight of the asphalt,
In the first step, after removing the existing road sealing material on the upper portion of the expansion joint, and before inserting the backup material, the neighboring edge surface in the two neighboring concrete members constituting the expansion joint Further comprising the step of forming a rectangular groove as a whole through the grinding process, the height and width of the grooved blind groove is formed to be equal to the diameter of the perforated tube or 1 to 5mm larger,
In the second step, the perforated tube wrapped with a non-woven fabric in the square groove, the perforated tube is installed in the second step, when the through-hole is formed in the bottom surface of the perforated tube the direction of the backing material through the bottom surface of the perforated tube Since it is discharged to the drainage capacity is reduced, by installing an extruder for blocking the hole in the manufacturing process, by extruding the extrudate in a thin film form of the thin plastic film type through the extruder nozzle to block the bottom surface of the hole in the perforated pipe Through the manufacturing method to produce the hole tube so that the blocked portion is located on the lower surface,
In the third step,
Before installing the bent steel plate reinforcing material, the sand filling portion is filled in the "square groove area",
When the bent steel plate reinforcement is installed, the bent steel plate reinforcement is composed of a bent surface and the plate portion formed on both sides around the bent surface, so that the sand filling the upper part of the gap between the expansion joint portion By installing the bent steel plate reinforcement so that the hole pipe disposed in the upward, bent "inside the bent surface", the non-homogeneous impurities contained in the inflow water absorbed into the hole pipe by the sand filling unit is primarily By filtering through and filtering secondary homogeneous impurities through the nonwoven fabric, thereby preventing the clogging of the perforated tube, promoting the drainage of influent into the perforated tube,
In the fourth step, a plurality of the plate-shaped reinforcement sheet formed in the form of the bent sheet steel reinforcement to be mounted on the sand filling portion and the upper surface of the two concrete members with respect to the installed bent sheet steel reinforcement The expansion joint construction method of the perforated tube insertion type settlement prevention underground roadway, characterized in that for fixing the one side of the expansion joint formed of the bent steel plate reinforcement and concrete material using the anti-separation anchor of the.
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