KR200275380Y1 - An Underground Structure With an Isolation Panel for Draining Water - Google Patents

Abstract

The present invention relates to the implementation of drainage and thermal insulation of underground structures, and in particular, it is attached to the earth plate during the construction of the outer wall of the basement to facilitate the drainage around the underground structures as well as to prevent the loss of hardened water required for concrete hardening, thereby promoting the strength development. Of course, it relates to an underground structure having a heat insulation panel for drainage having an external insulation effect by being attached after the exterior wall construction is completed.

Insulation panel for drainage used in the underground structure of the present invention is composed of a heat insulating material such as styropol, one side of the main body is flat and a plurality of projections are formed on the opposite side to fix the projection side facing the earth plate, Is integrally attached to the concrete structure, drainage function of the groundwater by the projections, suppressing the initial cracking of the underground structure during and after the concrete curing, insulation of the underground space, moisture-proof effect, earthquake effect, air shortening, preventing buoyancy of the structure In addition, it has the effect of reducing the building lifetime cost (LCC) by preventing condensation of underground structures and reducing heating and cooling loads.

Description

An Underground Structure With an Isolation Panel for Draining Water}

The present invention relates to an underground structure having a heat insulation panel for drainage. In particular, it is attached to the earth plate during the construction of the outer wall of the basement to smoothly drain the free water and the pressurized water around the underground structure, and to prevent the loss of hardened water required for concrete hardening. And it is related to the underground structure having a heat insulation panel for drainage having an external insulation effect of the underground structure by maintaining the adhesion after completion of the underground construction as well as promoting the strength expression by the isothermal maintenance effect.

In general, in the construction of the outer wall of the basement, after placing concrete, the interfering temporary bands (tensioned with earth anchors) are usually cast in seven days (50% strength). Before the retaining wall concrete is sufficiently hardened, lateral force (hydraulic pressure + earth pressure) is applied to cause initial cracking of the retaining wall concrete.

In more detail, in consideration of the construction conditions in which one floor cannot be placed at the same time due to the interference of a temporary band, it is ideal to design the reinforcement as a cantilever structure, but the reality is based on the premise of construction. The structure is designed as a one-way structure, and the precast retaining wall concrete causes cracks in the structure by the external force (hydraulic pressure + earth pressure) acting as early dismantling of the strip before the design strength is developed.

Because of this, the surface water flows into the outer wall of the basement structure and the water penetrates through the capillary phenomenon. Therefore, waterproof and moisture proof layers should be installed on the inner and outer walls of the structure.

Of course, although the condensation of the inner surface can be prevented by installing the insulation inside, condensation problems occur due to thermal bridge phenomenon at the site where insulation is broken (SIAB) in the case of multiple layers of the underground. Therefore, the outer insulation is more advantageous than the inner insulation in terms of improving the protection and thermal insulation performance of the basement structure. In addition, the installation of a moisture barrier layer inside the structure is essential at the time of thermal insulation.

Conventionally, in the construction of underground structures, the floor is provided with an injection molded plastic drainage plate having a predetermined strength, and the groundwater discharged downward through the drainage plate is led to one or more groundwater collection wells and forcedly discharged to the outside by a pump. It was. However, such a drain plate has only a function of preventing moisture from the bottom of the bottom layer and smoothing drainage of water flowing from the bottom layer, and it is made of a plastic material and has no insulation function such as styropol.

This is further described with reference to FIGS. 1A and 1B. 1A and 1B are the same except for using the perforated pipe 6 and the bottom drainage plate 7 of the base bottom 5, and the same reference numerals will be described. In the conventional underground structure, the earth plate 1 is installed on the outside to prevent the collapse of the strata (the H beam is not shown for convenience of description), and the moisture proof member 3 inside the concrete wall 2 inside the earth plate 1. Is additionally installed. Free water or pressurized water (4) penetrates the concrete wall (2) from the ground layer to the concrete wall (2) by capillary action or the like, and is led to the floor drainage plate (product made of PVC) (7) or the foundation floor (5). It flows into the perforated pipe (for the base bottom drainage) 6. The perforated pipe 6 or the bottom drain plate 7 serves as a drainage passage that guides the free water or the pressurized water 4 to the sump 8, and an underground structure naturally generated by the free water or the pressurized water 4. Suppresses building injuries due to buoyancy.

The purpose of the present invention is to solve the construction error space caused by the lack of precision of the drilling machine or the unevenness of the underground when the underground construction of urban underground structures is used. To prevent them at the same time.

This object is achieved by fixing a heat insulation panel for drainage having a plurality of protrusions arranged on a retaining plate (earth plate) when constructing an underground structure.

Figure 1a and 1b is a completed cross-sectional view of the conventional underground structure.

Figure 2 is an enlarged cross-sectional view of the underground structure of the present invention.

Figure 3 is an enlarged cross-sectional view for completing the underground structure of the present invention.

Figure 4 is a completed cross-sectional view of the underground structure of the present invention.

Explanation of symbols for main parts of the drawings

1: earth plate 2: concrete wall

3: moisture-proof member 4: water under pressure or free water

5: foundation floor 6: perforated pipe

7: floor drain plate 8: sump

9: insulation panel for drainage 10: projection

11 H beam 12 pitcher (non-woven fabric)

13: nail 14: reinforcement

15: die 16: nail

17: (joint) tape S: space part

P: water pipe

Hereinafter, the underground structure having a heat insulation panel for drainage of the present invention will be described in detail with reference to the accompanying drawings.

As the finished wall of the present invention is illustrated in the cross-sectional view in Figure 2, the underground structure having a heat insulating panel for drainage of the present invention is cured concrete (2); It is composed of insulation material such as expandable poly-styrene (expandable polystyrene), one side of the body is flat and a plurality of projections (10) are formed on the opposite side, the space for the smooth drainage of water between the projections (10) The heat insulation panel 9 for drainage in which the part S was formed is included.

The protrusions 10 are preferably formed of solid rather than hollow so that the pressure of the pressurized water or free water 4 flowing between the earth plate 1 is evenly transmitted to the (underground) structure. .

Referring to the cross-sectional view showing a method of forming an underground structure in Figure 3 describes the use state of the heat insulation panel for drainage of the present invention, the heat insulation panel 9 for drainage of the present invention is a H beam (punctured underground with a drilling machine) It is installed between the beams 11 to prevent the inflow of soil into the underground structure, and is installed inside the earth plate 1, and there is also a water-permeable pitcher (nonwoven fabric) between the heat insulation panel 9 and the earth plate 1 for drainage. ) 12 is positioned, which is fixed to the earth plate 1 with a nail 13. The heat insulation panel for drainage fixed to the earth plate 1 is fixed by fixing means such as nails 16, and the (joint) tape 17 is connected between the heat insulation panel 9 for drainage and the heat insulation panel 9 for drainage. Sealed by taping.

As such, when the heat insulation panel 9 for drainage of the present invention is installed on the earth plate 1, the reinforcement 14 and the formwork 15 are installed inside the building. Then, when the concrete is poured between the formwork 15 and the heat insulation panel 9 for drainage of the present invention, the outer wall of the underground structure (concrete wall 2) is formed.

The heat insulation panel 9 for drainage according to the present invention is fixed to the earth plate 1 by fixing means such as the nail 16 so that the projection 10 is positioned on the earth plate 1 side before and after concrete pouring. Only by ground water 12) and only ground water contained in the earth and sand is discharged smoothly through the space (S) between the projections (10). And, as shown in Figure 4, the groundwater discharged to the bottom via a water pipe (P) provided between the perforated pipe 6 or the bottom drain plate 7 of the base bottom 5 and the lower portion of the concrete wall (2). As the conventional method, the water collecting pipe 8 is collected through the hole pipe 6 or the bottom drain plate 7, and is forcibly pumped out.

The heat insulation panel 9 for drainage prevents the hardened water required to harden the concrete from leaking into the gaps of the earth plate 1 to promote the hydration reaction of the poured concrete, and to remove the heat of hydration generated during the hydration reaction. 9) implies to promote the initial strength of concrete by isothermal curing (steam curing effect).

In addition, even during the trench construction mainly in winter, the heat insulation panel 9 for drainage prevents the surface temperature of the concrete from dropping rapidly due to the externally frozen earth and sand mass (in the case of a plywood having a thickness of 80 cm or more). It is possible to control the dry shrinkage crack caused by the concrete surface and internal temperature difference (usually 15 ℃ or more).

On the other hand, in the site where the hydraulic pressure on the side wall is concerned, the water to be pressurized 4 existing on the outer outer wall is led to the space S between the protrusions 10 of the heat insulation panel 9 for drainage, and then the foundation floor ( By inducing the perforated pipe 6 or the bottom drain plate 5 of 5), the local water pressure on a part of the underground structure is distributed around the underground structure, thereby minimizing the local water pressure acting on the concrete being cured, thereby suppressing the initial cracking of the underground structure. do.

And, when the concrete is poured, isothermal curing (vapor curing effect) by the external insulation effect of the heat insulation panel itself for drainage to secure the initial strength of the underground structure to prevent the cracks generated in the concrete.

In addition, the space (S) formed between the projections 10 of the insulation panel to mitigate the impact of the underground structure due to vibrations such as earthquakes and subways (isolating effect), the external insulation function to insulate the underground walls and spaces, moisture proof effect By widening the selection of waterproofing materials (waterproof construction can be omitted), construction cost reduction and air reduction are achieved.

Moreover, even during the construction of the underground structure and after completion of the insulation panel for drainage of the present invention is connected to the bottom drainboard serves to prevent buoyancy of the structure.

In addition, the heating and cooling load is reduced when planning a living room (living facility) and a space (warehouse, warehouse, food store, etc.) in the basement space.

The insulation panel for drainage of the present invention is fixed to the earth plate installed at the time of forming the underground structure, and then permanently fixed to the underground structure even after concrete pouring, and drainage of the groundwater introduced through the earth plate by the protrusions as one component of the panel. Has the function.

The function of this insulation panel prevents the existing situation of dismantling the existing formwork due to the earth and sand that penetrates with the groundwater before placing concrete, prevents the injury of the structure by buoyancy during construction, and acts on the underground outer wall during curing. Reduce the lateral pressure (earth pressure + water pressure) to suppress the initial cracking of the structure, and the isothermal curing effect from the insulation material allows early formwork dismantlement by the initial strength of concrete, which shortens the air of underground construction, and vibrations such as earthquake and subway Reduces the impact of underground structures (isolating effect), heat-insulating and moisture-proofing effect widens the selection of waterproof materials (waterproof construction can be omitted) to reduce construction costs and shorten the air, and the insulation panel for drainage is connected to the floor drain board It prevents injuries of buildings caused by buoyancy of the structure and prevents condensation of underground walls. And, the air-conditioning load is reduced gajyeoseo has the effect of reducing the effective life of the building cost (LCC) actively meet the thermal energy conservation policy in the building, such as to enable a versatile utilization of underground space.

Claims (3)

H beams 11 perforated in the basement, and the earth plate (1) installed between the H beams to prevent the inflow of soil into the underground structure, and is installed outside the earth plate to prevent the soil from entering between the earth plate (1) The reinforcement part 12 which consists of the pitcher paper 12 which is provided, the reinforcement bar 14 provided in the inside of the pitcher paper 12, and the formwork 15 of the inside of the reinforcement bar, and is between the earth plate 1 and the formwork 15. In the underground structure made by pouring concrete in the When the underground structure is constructed, it is fixed to the earth plate 1 to which the pitcher 12 is attached, and when the underground structure is completed, it is fixed to the outer wall of the concrete wall 2 so that the groundwater can be easily drained even after the construction and completion of the underground structure. And one side of the main body is flat so as to insulate the underground structure, and the opposite side includes a drainage insulation panel 9 composed of a plurality of protrusions 10 to smoothly drain the groundwater. Underground structure with accommodating insulation panels. The underground structure according to claim 1, wherein the projections (10) of the heat insulation panel (9) for drainage are fixed toward the earth plate (10). The underground structure according to claim 1 or 2, wherein the protrusion (10) is solid.