KR20140115150A

KR20140115150A - Waterproofing method for an undergroung parking lot

Info

Publication number: KR20140115150A
Application number: KR1020130029877A
Authority: KR
Inventors: 홍정민
Original assignee: (주)대한방수공사
Priority date: 2013-03-20
Filing date: 2013-03-20
Publication date: 2014-09-30

Abstract

The waterproofing method of the underground parking lot of the present invention is to provide a customized maintenance method for each site by detecting the cause of leaking in each part of the structure constituting the underground parking lot.

Description

{Waterproofing method for an undergroung parking lot}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproofing method, and more particularly,

The parking lot can be constructed outdoors, on the ground, indoors or underground of various buildings, or in a separate parking building. The floor is made of concrete, mortar or iron plate. The floor of the parking lot should be treated with waterproof flooring to prevent corrosion of steel plates or reinforcing bars due to water or leakage of water to the lower layer. It should be treated so as to reduce the running noise of the vehicle, to withstand the running impact of the vehicle and to prevent the vehicle from slipping Should be processed.

For example, the floor of the parking lot should be waterproofed according to the flow characteristics of water, the characteristics of the waterproofing material, the concrete condition, and the external environment requirements. If the water content of the floor is high, the waterproof layer adheres to the floor and adversely affects the performance of the material. After construction, due to shrinkage and expansion caused by temperature change or impact, air pockets may be formed between the floor and the waterproof layer, pinholes may be formed in the waterproof layer, and the waterproof layer may be torn or broken. If these problems occur, repair work must be done.

Also, even if maintenance is performed by the same waterproofing method, the same problem arises, and maintenance and repair of the floor of the parking lot is expensive, so it is necessary to prevent this.

However, the conventional technologies only provide a waterproofing method for building construction, and there is no known method for systematically repairing water leakage when it occurs.

However, only a method of repairing and reinforcing the surface of a point where leakage occurs is disclosed in "Method for repairing complex waterproofing of concrete inner wall surface" (Korean Patent Registration No. 10-0354135, Patent Document 1).

Korean Patent Registration No. 10-0354135 filed on Apr. 30, 2002, entitled " Combined waterproofing repair method of concrete inner wall "

The waterproofing method of the underground parking lot of the present invention is to solve the problems occurring in the conventional art as described above, and it is possible to grasp the cause of leaking in each part of the structure constituting the underground parking lot, I want to.

More specifically, according to the cause of joints and sheet damage of ground structure, concrete pouring joint, concrete cold joint, concrete gravel rolling, drainage trench leakage, condensation phenomenon, It is intended to be able to finish the repair work at once without repairing various defects by carrying out repair for prevention of customized leakage according to the cause.

In the underground parking lot waterproofing method,

Waterproofing work for ground structures (s100);

After step s100, an underground concrete pouring joint part waterproofing operation (s200);

After step s200, an underground concrete cold joint waterproofing operation (s300);

After step S300, concrete gravel-marble-part waterproofing operation (S400);

After step s400, the waterproofing operation (s500) of the drainage trench portion;

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In step s100,

The filling material is filled in the filling material from the bottom of the ground floor structure 140 to fill the packing material so that the packing material is brought into contact with the ground-level bottom structure 140, the sheet upper structures 160 and 161, and the ground- To flow along the surface, to fill the internal space,

The ground bottom structure 140 is pierced at a predetermined angle G with respect to the ground floor structure adjacent to the crack portion 148 and the piercing depth is formed up to 2/3 of the ground floor structure thickness T, So as to be communicated with the inside of the crack part 148,

In step s200,

A perforation hole 211 is formed in the lower wall of the underground wall 200 so as to be inclined at a predetermined angle at a portion where the underground wall and the underground floor structure 210 meet, , And the depth of penetration is formed up to 2/3 of the wall thickness (T1)

In step s300,

For the cold joint part of the concrete structure, a perforation hole is formed at an angle of 2/3 of the thickness of the concrete wall at an angle to the crack part so as to communicate with the crack part, and then the packing material is injected

The packing material is impregnated at the point where the concrete wall body 300 meets the newly placed concrete wall body 350 and at the same time the packing material is filled even with the cold joint cracking inlet portion M,

In step S400,

The bottom wall 500 is pierced downward at a predetermined slope at a point near the entrance of the crack part of the crack part 450 in the molten part of the gravel 800 so as to communicate with the crack part,

The packing material is punctured up to 2/3 of the thickness of the underground wall 500 and then the packing material is pushed into the perforation hole so that the packing material is simultaneously filled into the rear portion of the underground wall and the entrance of the crack portion,

In step s500

The packing material is poured along the perforation holes of the underground floor structure 400 from below to 2/3 of the depth of the underground floor structure (K1 and K2 direction), and the underground concrete floor structure 440 and the underground floor And a packing material is buried along the space between the structures 400. The waterproofing method for an underground parking lot leakage is disclosed.

According to the present invention, it is possible to determine the cause of leaking in each part of the structure constituting the underground parking lot, and to customize the waterproofing of each part.

It is possible to check the leakage of each part systematically according to the cause of the joints of the ground structure, the sheet damaged part, the concrete pouring joint, the concrete cold joint, the concrete gravel pouring phenomenon, the drainage trench leakage and the condensation phenomenon. It is possible to finish the maintenance work at once without repairing many times of defects by carrying out maintenance for preventing leakage.

1 and 2 are views for explaining a method for preventing the leakage of the ground-raised structure and the ground floor structure, respectively
3 is a view for explaining a packing method of a packing material 900 for waterproofing.
4 and 5 are views for explaining the leakage of the concrete piercing joint portion between the underground wall 200 and the underground floor structure 210
FIGS. 6 and 7 are views for explaining a packing material injection method for preventing water leakage in FIGS. 4 and 5
Figs. 8 and 9 are views for explaining leakage of concrete cold joints
Figs. 10 and 11 are views for explaining a packing material injection method for preventing water leakage in Figs. 8 and 9
Figs. 12 and 13 are diagrams for explaining leaking due to gravel bite in a concrete wall
FIG. 14 is a view for explaining a packing material injection method for preventing water leakage in FIGS. 12 and 13; FIG.
15 is a view for explaining leakage around the underground parking lot drainage trench 600
Figs. 16 and 17 are views for explaining a method of preventing water leakage in Fig. 15
18 is a view for explaining the condensation phenomenon
19 is a view for explaining a method of filling a packing material to prevent condensation in Fig. 18 and a re-coating film re-construction.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

However, the scope of the present invention is not limited to the scope of the present invention, but extends to any inventions of a level equal to that of the claims.

As described above, the waterproofing method of the underground parking lot according to the present invention is to solve the problems occurring in the conventional art as described above, and it is necessary to determine the cause of leakage of each part of the structure constituting the underground parking lot, And to provide a customized maintenance method.

3 is a view for explaining a method of injecting a packing material 900 for waterproofing, and FIGS. 4 and 6 are views for explaining a method for preventing leakage of a ground-raised structure and a ground- 5 is a view for explaining leakage of a concrete pouring joint portion between the underground wall 200 and the underground floor structure 210, and FIGS. 6 and 7 are views for explaining a packing material injection method for preventing leakage in FIGS. 4 and 5 8 and 9 are views for explaining the leakage of concrete cold joints, FIGS. 10 and 11 are views for explaining a packing material injection method for preventing water leakage in FIGS. 8 and 9, and FIGS. 14 is a view for explaining a packing material injection method for preventing leakage of water shown in Figs. 12 and 13, Fig. 15 is a view for explaining a method of injecting a packing material for preventing leakage of water in an underground parking lot The drainage trench 600 Fig. 16 is a view for explaining a leakage phenomenon, Fig. 16 and Fig. 17 are views for explaining a method of preventing water leakage in Fig. 15, Fig. 18 is a figure for explaining a condensation phenomenon, Fig. 2 is a view for explaining a method of filling a packing material and applying a condensation coating material.

The waterproofing method of the present invention is as follows. 1) Waterproofing of the ground structure 2) Waterproofing of the underground concrete pouring joint part 3) Waterproofing of the underground concrete cold joint part 4) Waterproofing of the underground concrete gravel pouring part 4) 5) Waterproofing method for dew condensation. Depending on each cause, it is checked systematically whether leaks are occurred in each part, and each part is repaired to prevent leakage of customized leakage according to the cause. It suggests how to do it.

Waterproofing work for ground structures ( s100 )

Referring to FIG. 1, a ground structure 100 such as a staircase protruding to the ground, a sheet pressing jaw, or the like is formed on an upper part of an underground parking lot, a ground protruding wall 120 supporting the ground structure 100 is formed, The ground floor structure 140 is formed on the floor surface.

A seat 162 and seat top structures 160 and 161 are formed on the ground floor structure to prevent leakage to the underground parking lot.

The reason for leaking through the gap between the structures formed on the ground above the underground parking lot is to prevent leakage between the ground floor structure 140 and the seat 162 or between the seat top structures 160 and 161 and between the ground projected wall 120 and the seat top structures 160 and 161, As shown in FIG.

In the present technology, as shown in FIG. 2, as a first step for blocking leakage of an underground parking lot, an injection port for filling the packing material is pierced from the lower part of the ground floor structure 140, and is drawn in the direction of the arrow in FIG. The packing material flows along the surface where the ground floor structure 140, the seat top structures 160 and 161, and the ground protruding wall 120 are in contact with each other to fill the internal space.

Generally, underground parking leaks are usually carried out to prevent leakage of water only on the underground space wall. However, in the present invention, there is a peculiar point that the leakage preventing operation is performed in advance on the structure protruding to the ground.

On the other hand, as shown in Fig. 2, filling of the packing material and coating of the inorganic elastic coating material evenly on the surface of the protruding wall 120 may be performed concurrently.

Referring to FIG. 3, a specific method of filling the packing material through the injection ports 145 and 146 is shown in FIG.

When the ground floor structure 140 corresponding to the ceiling of the underground parking lot is enlarged, a cracking portion 148 is formed. A hole is formed in the injection hole adjacent to the cracking portion using a predetermined punching device. It is preferable that the piercing hole is formed at a predetermined angle (G) with the ground floor structure at the injection port, and the piercing depth is formed up to 2/3 of the ground floor structure thickness (T). The perforation hole should be in contact with the inside of the cracking portion 148. 3, a part of the packing material is introduced in the upward direction (direction C) of the ground floor structure, and at the same time, the packing material 900 So that some of them are injected.

When the depth of penetration is less than the depth, the amount of the material to be injected to the upper part of the ground floor structure decreases. If the depth of penetration is larger than the depth, the amount of the material to be injected in the direction B under the crack 148 is reduced. Is most preferable.

Underground concrete pouring joint waterproofing work (s200)

FIGS. 4 and 5 are views for explaining the leakage of the concrete piercing joint portion between the underground wall 200 and the underground floor structure 210, and FIGS. 6 and 7 are views for explaining the packing Fig. 5 is a view for explaining a re-injection method. Fig.

The wall in Fig. 4 corresponds to the underground wall 200 of the underground parking lot. And the bottom structure corresponds to the underground floor structure 210 constituting the bottom surface of the underground parking lot. The underground floor structure refers to the floor of the basement, the floor of the basement, and so on.

When the adjacent portions of the underground wall 200 and the underground floor structure 210 are installed, most of the concrete pouring and the by-product Y generated during the reinforcement work are mixed with the concrete, Water leaks in the direction of E in Fig. 5 are frequent.

6, a perforation hole 211 is formed in the lower surface of the underground wall 200 so as to be inclined at a predetermined angle at a portion where the underground wall and the underground floor structure 210 meet.

After the perforation holes are formed, the packing material is injected into the perforation holes in the A direction. At this time, it is preferable to drill so as to form the piercing depth H1 up to 2/3 of the wall thickness T1. The injected packing material proceeds toward the rear portion of the underground object 200 while filling the internal cracked portion.

Underground concrete cold joint waterproofing work ( s300 )

FIGS. 8 and 9 are views for explaining leakage of concrete cold joints, and FIGS. 10 and 11 are views for explaining a packing material injection method for preventing water leakage in FIGS. 8 and 9. FIG.

The cold joint means that the concrete which has been previously laid is laid on the concrete after the concrete laid first is hardened and the concrete laid thereon is stacked when the concrete is poured, It refers to the part that occurs due to the time difference in curing.

These cold joints do not match the quality of the concrete, which creates a discontinuity and is the main passage through which the water flows. The water in the cold joint part is repeatedly frozen and melted, causing corrosion of steel bars, lowering the strength of the concrete and lowering the watertightness, thereby promoting leakage of the underground parking lot.

The cold joint surface 380 in Fig. 8 is shown, and in Fig. 9 water leaks in the F direction.

It is the same as described above to form the perforation hole at 2/3 depth (H1) of the thickness T1 of the concrete wall. The portion where the perforation is started is adjacent to the crack point (M, cold-joint crack inlet portion) similar to the construction method of FIG. 3, and is punched downward at a predetermined inclination angle toward the crack point do.

When the packing material is injected in the direction A, as shown in FIG. 11, the packing material seeps into the point where the precedingly laid concrete wall body 300 and the newly laid concrete wall body 350 meet in the rear surface of the underground wall, and at the same time, And the packing material is filled.

concrete Gravel Waterproof work ( s400 )

FIGS. 12 and 13 are views for explaining leakage due to gravel bite in a concrete wall, and FIG. 14 is a view for explaining a packing material injection method for preventing leakage of water in FIGS. 12 and 13.

When pouring concrete, it is a general phenomenon that a large gap is formed in the area where the gravels are poured between the reinforcing bars. If such gravel pouring occurs, cracks may occur in the wall, which may cause leakage of the underground wall.

Cracks 450 of the gravel 800 of the underground wall 500 are shown in FIG. 12, and cracks are generated across the front and rear of the underground wall.

The leakage direction coincides with the cracked portion, and leakage occurs in the direction F1. In the similar manner to that described with reference to FIG. 10, the leaked portion is punctured downward at a predetermined inclination near the entrance of the cracked portion so as to communicate with the cracked portion.

The hole is drilled to a depth of hole H1 up to 2/3 of the thickness of the underground wall 500, and then the packing material is pushed into the perforation hole in the direction A. As a result, as shown in Fig. 14, the packing material is simultaneously filled into the rear surface portion of the underground wall and the entrance of the crack portion.

Drainage trench Waterproofing of part (s500)

In this work step, the main purpose of the work is to fill the space between the wet floor concrete structure 440 and the underground floor structure 400.

15 is a view for explaining a leakage around the underground parking lot drainage trench 600, and FIGS. 16 and 17 are views for explaining a method of preventing the leakage of the water in the underground parking lot drainage trench 600 in FIG.

A drainage trench 600, which is a water drain passage, is formed at the edge of the underground parking lot. The flowing water portion corresponds to reference numeral 610.

The adjacent portion of the drainage trench corresponds to a point where cracks occur frequently due to the excessive pressure of the underground drainage trench adjacent wall 470.

Particularly, the water in the drainage trench seeps through the lower portion of the open floor concrete structure 440 on the floor of the underground parking lot, and water flows in the S direction through the underground floor structure 400 and the cracking portion 446, The ceiling of the ceiling causes leakage. (Fig. 15)

In this case, when the packing material is poured downward from the upper side of the non-wet concrete floor structure 440 as shown in FIG. 16 and packed in the direction J, the space between the lower floor structure 440 and the floor structure 400 in the K direction And the packing material fills in the L direction. At this time, the drain trench (600) should be filled sufficiently to allow the packing material to flow out.

17, the underground floor structure 400 should be pierced upward as shown in FIG. 17. When the packing material is poured along the perforation holes in the K1 and K2 directions, V, W, Z, The packing material is filled in the U direction to fill up the space between the inactive concrete floor structure 440 and the underground floor structure 400. [

In this waterproofing step, it is desirable to form the piercing depth up to 2/3 of the thickness (D) of the underground floor structure.

Work on condensation (s600)

FIG. 18 is a view for explaining a condensation phenomenon, and FIG. 19 is a view for explaining a method of filling a packing material in order to prevent condensation of FIG.

If the surface temperature of the structure and the temperature in the air are different, the moisture in the air will become water droplets, causing condensation that looks like a leaking phenomenon. In this case, the construction cost due to the waterproofing work is increased, so that the construction for preventing the condensation phenomenon can be added.

18 shows that the surface condensation of the structure is formed, and FIG. 19 shows that condensation occurs inside the structure.

In case of surface condensation, the oily permeable material is applied and then the condensation preventing material is applied.

On the other hand, in the case of internal condensation inside the structure, the heat insulating material is injected in the direction A (FIG. 19). When the coarse objects (P) are piled up inside the structure, condensation inside the structure frequently occurs. The internal condensation can be blocked by inserting the heat insulator diagonally upward from below the under ceiling.

A: Packing re-injection direction
H: Perforation height 100: Ground structure
120: ground protruding wall
140: ground floor structure 145, 146, 310, 311:
148, 180, 464, 450: cracks 160, 161:
162: sheet
200,500: Underground wall 210, 400, 700: Underground floor structure
300: Pre-cast concrete wall
350: Newly cast concrete wall
400,441: Underground floor structure
440: Plain concrete floor structure
446: crack section 470: drainage trench adjacent wall
500: Underground wall 600: Drain trench 610: Trench drain
800: Gravel 900: Packing material

Claims

In the underground parking lot waterproofing method,
Waterproofing work for ground structures (s100);
After step s100, an underground concrete pouring joint part waterproofing operation (s200);
After step s200, an underground concrete cold joint waterproofing operation (s300);
After step S300, concrete gravel-marble-part waterproofing operation (S400);
After step s400, the waterproofing operation (s500) of the drainage trench portion;
, &Lt; / RTI &
In step s100,
The filling material is filled in the filling material from the bottom of the ground floor structure 140 to fill the packing material so that the packing material is brought into contact with the ground-level bottom structure 140, the sheet upper structures 160 and 161, and the ground- To flow along the surface, to fill the internal space,
The ground bottom structure 140 is pierced at a predetermined angle G with respect to the ground floor structure adjacent to the crack portion 148 and the piercing depth is formed up to 2/3 of the ground floor structure thickness T, So as to be communicated with the inside of the crack part 148,
In step s200,
A perforation hole 211 is formed in the lower wall of the underground wall 200 so as to be inclined at a predetermined angle at a portion where the underground wall and the underground floor structure 210 meet, , And the depth of penetration is formed up to 2/3 of the wall thickness (T1)
In step s300,
For the cold joint part of the concrete structure, a perforation hole is formed at an angle of 2/3 of the thickness of the concrete wall at an angle to the crack part so as to communicate with the crack part, and then the packing material is injected
The packing material is impregnated at the point where the concrete wall body 300 meets the newly placed concrete wall body 350 and at the same time the packing material is filled even with the cold joint cracking inlet portion M,
In step S400,
The bottom wall 500 is pierced downward at a predetermined slope at a point near the entrance of the crack part of the crack part 450 in the molten part of the gravel 800 so as to communicate with the crack part,
The packing material is punctured up to 2/3 of the thickness of the underground wall 500 and then the packing material is pushed into the perforation hole so that the packing material is simultaneously filled into the rear portion of the underground wall and the entrance of the crack portion,
In step s500
The packing material is poured along the perforation holes of the underground floor structure 400 from below to 2/3 of the depth of the underground floor structure (K1 and K2 direction), and the underground concrete floor structure 440 and the underground floor So as to fill the packing material along the space between the structures 400
How to waterproof underground parking leaks.

The method according to claim 1,
The construction (s600) for preventing the condensation phenomenon is further added,
In case of condensation on the surface of the structure, the oily permeable material is applied and then the condensation preventing material is applied.
In the case of condensation inside the structure, the insulation material is injected diagonally upward from below the ceiling at a predetermined angle to the area where the reinforcing bars are located inside the structure.