KR101307168B1 - Permanent drainage device for building - Google Patents

Abstract

PURPOSE: A persistent drain device for buildings is provided to minimize the partial damage of a persistent drain device by uniformly dispersing and supporting loads applied to a horizontal supporting part. CONSTITUTION: A persistent drain device for buildings comprises a pair of side parts (12), a side support (14), a lateral support (11), a chamfer part (13), a slope reinforcement part, and a reinforcement support (16). A lateral support is equipped on the upper part of a drainage gallery (17) to support loads applied to the upper part of the drainage gallery. The chamfer part is slantly formed at the upper end of a side part and both ends of the lateral support to disperse loads applied to the lateral support to the side part. A pair of slope reinforcement parts is equipped inside the drainage gallery. The gap between the pair of slope reinforcement parts increases from the upper end to the lower end.

Description

Permanent drainage device for building}

The present invention relates to a permanent drainage device for buildings, more specifically, to maximize the water efficiency while minimizing the thickness of the concrete, groundwater flowing along the ground quickly and smoothly flow into the interior of the permanent drainage device, horizontal support The present invention relates to a permanent drainage device for buildings, in which the load acting on it is evenly distributed and supported throughout.

In general, excavation work is carried out to a predetermined depth for the construction of civil and architectural underground structures, and the ground (floor surface) after the excavation is completed is the basic construction reference surface, and based on this basic construction reference surface, It will be constructed.

When groundwater penetrates and flows into the foundation construction surface, groundwater acts as a positive pressure on the underground structure. Here, the underground structure refers to a structure that is constructed underground, and includes a building having such an underground structure. The positive pressure acting on the underground structure is generated by the head difference due to the bottom part of the underground structure and the surrounding groundwater level, and acts as a force to lift the underground structure. The positive pressure caused by the groundwater has the following adverse effects on the underground structure.

That is, if the positive pressure generated by the groundwater is greater than the static load (dead load) of the underground structure, the underground structure may be injured or inclined to one side, or cracks may be generated in the mat foundation or foundation floor slab area where the positive pressure is concentrated. Eventually the underground structure is destroyed.

In addition, even if the positive pressure due to the groundwater is less than the static load of the underground structure, it promotes the weakening of the concrete of the underground structure, and groundwater can penetrate into the underground structure through the construction joints (joints) to act as a cause of cracking. .

Therefore, as a countermeasure against the positive pressure caused by groundwater in the construction of civil engineering and building structures with underground floors, the foundation thickness of the underground structure may be increased, or a rock anchor or the like may be installed to resist the positive pressure, or the foundation construction reference surface. A drain pipe is installed in the water pipe to collect and drain the groundwater to reduce the positive pressure.

Recently, a method of draining groundwater to a sump is installed by installing a drain pipe on a basic construction reference plane, and one of the methods is as disclosed in Korean Registered Application No. 20-0336460.

According to the disclosed contents, after digging the basement ground, an additional trench is further excavated to a predetermined depth in the foundation construction reference surface (final excavation surface), and the bundle pipe and gravel (crushed stone) connected to the sump well are filled in the trench. The system is adopted.

Therefore, the groundwater is collected through the geotextiles and drainboards pre-arranged on the foundation construction plane. At the same time, the groundwater is collected into the bundle pipe in the trench and drained to the sump, and the groundwater collected in the sump is forcedly pumped. .

However, such a conventional drainage system has a problem that the trench is not only installed on the foundation construction reference plane but also interferes with the underground structure, so that the allowable bearing capacity of the foundation ground is reduced, thus falling short of the design ground pressure. In particular, additional trench excavation has a problem in that the construction and stability and economical deterioration and the air is long. In addition, due to the excessive excavation of the trench, the allowable bearing capacity of the foundation ground can be greatly reduced, and there is a problem in that the positive pressure is partially increased when a drain board is not installed between the trench and the trench.

In order to solve this conventional problem, the present applicant has developed a groundwater collecting and draining device (Registration Room No. 20-0396485) of the lower ground of the underground structure. This is provided with a drain board and a double pipe type drain pipe, which are simple to assemble and install, without having to excavate the basic construction reference surface (final digging surface) again so that they can be easily installed on the basic construction reference surface.

Such a drainage system collects groundwater that penetrates and inflows through the excavation ground through a drain board without digging the basic construction reference plane again, and quickly drains it to the sump through a drain pipe serving as a collection and drainage. It was. Therefore, the workability is excellent and the air can be shortened, so that the groundwater can be easily and permanently collected and drained so that no positive pressure is applied to the mat-based or foundation floor slab.

Here, the drain pipe is composed of an inner tube having a drainage hole, an outer tube having a water collecting passage, and a connecting plate which integrally connects the outer diameter surface of the inner tube and the inner diameter surface of the outer tube.

However, such a drain pipe is formed to have a relatively large contact area, and there is a problem that water collection collected on the drain pipe side does not flow smoothly along this. That is, since a cylindrical inner tube is formed by the connecting plates inside the drain tube, the collecting water collected in the drain tube flows along and contacts the inner circumferential surface and the connecting plates of the outer tube as well as the largest surface area in the drain tube. It flows in contact with the outer circumferential surface and the inner circumferential surface of the inner tube having the same. As the collection flows in contact with a large surface area as described above, the frictional resistance between the contact surfaces increases, thereby causing a problem that the collection does not flow smoothly along the drain pipe.

In addition, the conventional groundwater collection and drainage device of the lower ground structure of the conventional underground structure was formed by manually drilling a plurality of drainage holes formed in the connecting plate. Therefore, the work of drilling a plurality of drainage holes is very complicated and workability is thus deteriorated.

In addition, the conventional groundwater collection and drainage device of the lower ground structure has a lot of restrictions in increasing the amount of water. That is, after installing the drain pipe on the basic construction reference plane, in order to cover the drain pipe sufficiently, usually about 60mm of concrete is poured on it. In order to increase the water flow rate, a larger diameter drain pipe should be used. In this case, the amount of concrete pouring to cover the large diameter drain pipe increases rapidly, resulting in an increase in construction cost.

Republic of Korea Registration Room No. 20-0336460 Republic of Korea Registration Room No. 20-0396485

An object of the present invention is to provide a permanent drainage device for buildings to maximize the water efficiency while minimizing the thickness of the concrete.

Still another object of the present invention is to provide a permanent drainage device for a building in which groundwater flowing along the ground is quickly and smoothly introduced into the permanent drainage device.

Still another object of the present invention is to provide a permanent drainage device for a building in which load applied to an external drainage part is evenly distributed and supported as a whole.

Still another object of the present invention is to provide a permanent drainage device for a building such that the strength, water flow rate, and manufacturing cost of the permanent drainage device are optimized.

Still another object of the present invention is to provide a permanent drainage device for a building in which the durability of the external drainage portion is greatly improved.

It is still another object of the present invention to provide a permanent drainage device for a building to keep the permanent drainage device clean and to purify the groundwater.

It is still another object of the present invention to provide a permanent drainage device for a building to reinforce a weak part by dispersing the stress so that it is not concentrated in one place.

Building permanent drainage device of the present invention for achieving the above object, a pair of side parts to guide the drainage of the groundwater introduced to form both sides of the drainage passage; A side support provided at the bottom of the side portion and being in close contact with the bottom to support the lower side of the side portion; A horizontal support portion forming an upper portion of the drain passage and supporting a load acting on the upper portion; A chamfer formed at an upper end of the side portion and at both ends of the horizontal support portion to distribute the load acting on the horizontal support portion to the side portion; A pair of inclined reinforcement parts provided in the drain passage and having upper ends integrally connected to the horizontal support part, the lower ends being supported on the floor, and the horizontal intervals gradually widening toward the lower ends from the upper ends; A reinforcing part supporter integrally connected to the lower ends of the inclined reinforcement parts and closely attached to the bottom to support the load acting on the horizontal support part; The chamfer distributes the notch portion formed between the side portion and the horizontal support portion to the first notch portion and the second notch portion to distribute the stress concentrated on the notch portion; The angle of the inclined reinforcement portion is characterized in that 30 to 40 °.

Another characteristic of the building permanent drainage device of the present invention, when the cross section of the drainage passage as a reference, the horizontal width between the side portions is 85 to 95mm, the total height from the floor to the horizontal support portion is 38 to 42mm, the vertical side portion The height is 1/2 of the overall height, and the angle of the chamfer to the vertical line is 35 to 45 °, and the horizontal spacing between the reinforcement support and the side support is equal to the horizontal width of the side support and the horizontal width of the reinforcement support. 1/2.

Another feature of the building permanent drainage device, a special silicon layer is applied to the upper surface of the horizontal support, the outer surface of the chamfer, the outer surface of the side portion, the special silicon layer is made of fluorite carbon (fluorite carbon).

Further features of the permanent drainage device for buildings of the present invention, 44 to 57% by weight of crystalline polypropylene and ethylene butyl acryl on both the bottom surface of the horizontal support portion, the inner surface of the chamfer portion, the inner surface of the side portion, and both sides of the slope reinforcement portion The polypropylene resin composition which consists of 9-21 weight% of late polymers, 7-25 weight% of styrene-type hydrogenated block copolymers, and 10-23 weight% of inorganic fillers is apply | coated.

Another characteristic of the permanent drainage device for buildings of the present invention, the bottom surface of the horizontal support, the inner surface of the chamfering portion, the inner surface of the side portion, both sides of the slope reinforcement portion is coated with a fragrance material containing functional oil in the fragrance, mixed The ratio is 95 to 97% by weight of the functional oil is mixed with 3 to 5% by weight of functional oil, the functional oil is composed of 30% by weight of poison, 25% by weight of vine, 25% by weight of gold, 20% by weight of citronella.

The present invention as described above, the chamfer portion formed to be inclined at both ends of the upper end and the horizontal support portion of the side portion to distribute the load acting on the horizontal support portion to the side portion, and a pair is provided inside the drainage passage and the upper ends are integrally connected to the horizontal support portion The lower end is supported on the floor and is provided with an inclined reinforcement formed so that the horizontal interval gradually increases toward the lower end from the upper end. Therefore, the load acting on the horizontal support part is distributed to the side part through the chamfers on both sides of the horizontal support part, and the load acting on the central part of the horizontal support part is distributed and supported by the inclined reinforcement part. Therefore, since the load acting on the horizontal support part is evenly distributed and supported by the chamfer part and the slope reinforcement part, partial breakage of the permanent drainage device is minimized.

The chamfer of the present invention is formed to be inclined at both ends of the upper side and the horizontal support portion of the side portion to distribute the load acting on the horizontal support portion to the side portion, the notch portion formed between the side portion and the horizontal support portion to the first notch portion and the second notch portion Disperse Therefore, since the stress concentrated in one place by the chamfer is distributed to the first notch and the second notch, the stress is dispersed so that it is not concentrated in one place, thereby reinforcing the weak part, thereby minimizing damage caused by external load.

Based on the cross section of the drain passage, the present invention has a horizontal width between the side portions of 85 to 95 mm, and a total height of 38 to 42 mm from the floor to the horizontal support portion. If the horizontal width is less than 85 mm, the amount of water is reduced, and if the horizontal width is more than 95 mm, the amount of water is increased, but the amount is weak to external loads. And if the total height from the floor to the horizontal support is less than 38mm, the amount of water is reduced, and if the total height from the floor to the horizontal support is more than 42mm, the amount of water is increased but becomes weak to external loads. Therefore, considering the water flow rate and the load bearing force on the horizontal support part, the horizontal width between the side parts is 85 ~ 95mm, and the total water flow from the floor to the horizontal support part is 38 ~ 42mm. As the height is minimized, the thickness of the concrete placed on top of the permanent drainage device is reduced accordingly, thereby improving the workability and reducing the construction stage.

The vertical height of the side part of the present invention is 1/2 of the total height, and the angle of the chamfer with respect to the vertical line is 35 to 45 degrees. If the vertical height of the side part is less than 1/2 of the total height and the angle of the chamfer with respect to the vertical line is less than 35 °, the notch angle of the first notch part is sharply reduced and stress generation is concentrated in this part, and the vertical height of the side part is If is greater than 1/2 of the total height and the angle of the chamfer to the vertical line exceeds 45 °, the notch angle of the second notch portion is drastically reduced and stress generation is concentrated in this portion. Therefore, the vertical height of the side part is 1/2 of the total height, and the angle of the chamfer with respect to the vertical line is 35-45 ° to maximize the dispersing effect of the notch part, and stress is applied to either one of the first notch part and the second notch part. This prevents concentration.

In the present invention, a special silicon layer is applied to the upper surface of the horizontal support, the outer surface of the chamfer portion, the outer surface of the side portion, and the special silicon layer is made of fluorite carbon. The special silicon layer made of fluorite carbon is composed of a dense structure on molecular bonds and has high heat resistance and excellent chemical resistance. Therefore, since the durability of the horizontal support, the chamfer and the side part is greatly improved, the horizontal support, the chamfer and the side part embedded in the discarded concrete are not corroded, ruptured or damaged even after a long time.

The present invention, 44 to 57% by weight of crystalline polypropylene, 9 to 21% by weight of ethylene butyl acrylate polymer, styrene around the lower surface of the horizontal support, the inner surface of the chamfered portion, the inner surface of the side portion, the slope reinforcement portion The polypropylene resin composition which consists of 7-25 weight% of system hydrogenated block copolymers, and 10-23 weight% of inorganic fillers is apply | coated. Such a polypropylene resin composition can improve the quality of the product because it is excellent in paint adhesion and impact resistance even without applying a primer as an adhesive modifier, it has the effect of extending the life of the product.

The present invention is coated with a fragrance material containing functional oil in the fragrance, the lower surface of the horizontal support, the inner surface of the chamfered portion, the inner surface of the side portion, the inclined reinforcement portion, the mixing ratio of the fragrance 95-97% by weight 3 to 5% by weight of the functional oil is mixed, the functional oil is composed of 30% by weight of poison, 25% by weight of vines, 25% by weight of gold, 20% by weight of citronella. Therefore, as the fragrance material having a sterilization, disinfection function, etc. is coated, it is possible to obtain the effect of keeping the permanent drainage device clean and purifying the ground water by acting as sterilization and insecticide.

1 is a schematic perspective view showing a state in which a permanent drainage device for a building of the present invention is installed
Figure 2 is a perspective view of the permanent drainage device for buildings of the present invention
Figure 3 is a cross-

Specific features and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings.

1 is a schematic perspective view showing a state in which the permanent drainage device for a building of the present invention is installed, FIG. 2 is a perspective view of the permanent drainage device for a building of the present invention, and FIG. 3 is a cross-sectional view of FIG.

Building permanent drainage device of the present invention, in consideration of the direction of the ground water flowing upward through the ground to open the lower portion of the inner drainage to increase the inflow range, the outer drainage also has a large open the bottom, the water supply capacity It is characterized by a great improvement and a solid structure.

In order to install the permanent drainage device for a building of the present invention, first, an excavation work is performed, and through this excavation work, the underground part of a civil engineering or building structure is constructed. When the excavation work is completed, the ground surface, that is, the foundation construction reference plane is arranged to be evenly arranged.

When the basic construction reference surface is evenly arranged, the geotextile 1 is laid according to the design layout criteria. The geosynthetic fiber 1 substantially absorbs groundwater penetrated into the foundation construction reference plane and serves as an initial collection. And install the permanent drainage device for buildings of the present invention according to the design arrangement criteria on the geotextile (1).

Building permanent drainage device of the present invention, the side portion 12, the side support 14, the horizontal support portion 11, the chamfer 13, the slope reinforcement portion 15, the reinforcement portion support (16).

The side part 12 is provided with a pair, and forms both sides of the drain passage 17 to guide the drainage of the groundwater introduced.

The side stand 14 is provided at the lower end of the side part 12 and in close contact with the bottom to support the lower side of the side part 12.

The horizontal support part 11 forms the upper part of the drain passage 17, and supports the load which acts on the upper part.

The chamfer 13 is formed inclined at the upper end of the side part 12 and both ends of the horizontal support part 11 to distribute the load acting on the horizontal support part 11 to the side part 12.

Since the stress concentrated in one place by the chamfer 13 is distributed to the first notch 18 and the second notch 19, the stress is dispersed so that the stress is not concentrated in one place, thereby reinforcing the weak part. Minimize the damage caused by the load.

Slope reinforcement portion 15, a pair is provided in the drain passage 17 and the upper ends are integrally connected to the horizontal support 11, the lower ends are supported on the floor and the horizontal interval gradually increases toward the lower ends from the upper ends Is formed.

The reinforcement support 16 is integrally connected to the lower ends of the inclined reinforcement parts 15 and adheres to the bottom to support the load acting on the horizontal support part 11.

Here, the chamfer 13 disperses the notch portion formed between the side surface portion 12 and the horizontal support portion 11 to the first notch portion 18 and the second notch portion 19 to stress the stress concentrated on the notch portion. Disperse

Angle (theta) 1 of the slope reinforcement part 15 is 30-40 degrees.

When the angle θ1 of the inclined reinforcement portion 15 is less than 30 °, when the load acting on the horizontal support portion 11 is a vertical load, it is supported without any problem, but the side load acts obliquely on the drainage device of the present invention. If this is not possible to support it properly, there is a problem that the joint portion of the horizontal support portion 11 and the slope reinforcement portion 15 is easily broken.

When the angle θ1 of the slope reinforcing portion 15 exceeds 40 °, the distance between the bottom of the slope reinforcing portion 15 and the bottom of the side portion 12 is narrowed, whereby the groundwater is a slope reinforcing portion ( 15) and the side portion 12 does not flow smoothly into the space. Therefore, the angle θ1 of the inclined reinforcement portion 15 is preferably 30 to 40 degrees.

Based on the cross section of the drain passage 17, the horizontal width between the side portions 12 is 85 to 95 mm, and the total height from the bottom to the horizontal support portion 11 is 38 to 42 mm.

If the horizontal width is less than 85 mm, the amount of water is reduced, and if the horizontal width is more than 95 mm, the amount of water is increased, but the amount is weak to external loads. If the total height from the floor to the horizontal support portion 11 is less than 38 mm, the amount of water is reduced. If the total height from the bottom to the horizontal support portion 11 is more than 42 mm, the amount of water is increased, but the amount of the water is weak to external loads. .

Therefore, in consideration of the amount of water passing and the supporting force for the load acting on the horizontal support portion 11 when the horizontal width between the side portions 12 is 85 ~ 95mm, when the total height from the floor to the horizontal support portion 11 is 38 ~ 42mm In other words, the maximum amount of water in the permanent drainage system is maximized while the height is minimized. Therefore, the thickness of the concrete placed on top of the permanent drainage system is reduced accordingly, thereby improving workability and saving construction stage.

The vertical height of the side portion 12 of the present invention is 1/2 of the total height, the angle (θ2) of the chamfer 13 with respect to the vertical line is 35 to 45 °, the reinforcement support 16 and the side support 14 The horizontal spacing between) is equal to the horizontal width of the side support 14 and is 1/2 of the horizontal width of the reinforcement support 16.

If the vertical height of the side portion 12 is less than 1/2 of the total height and the angle θ2 of the chamfer 13 with respect to the vertical line is less than 35 °, the notch angle of the first notch portion 18 decreases rapidly. When the stress is concentrated in this portion, and the vertical height of the side portion 12 exceeds 1/2 of the total height and the angle θ2 of the chamfer 13 with respect to the vertical line exceeds 45 °, the second notch portion As the notch angle in (19) decreases drastically, stress generation is concentrated in this area.

Therefore, the vertical height of the side portion 12 is 1/2 of the total height, and the angle θ2 of the chamfer 13 with respect to the vertical line is 35 to 45 ° to maximize the dispersing effect of the notch portion 20, and the first The stress is prevented from being concentrated on either side of the notch 18 and the second notch 19.

On the other hand, a special silicon layer may be applied to the upper surface of the horizontal support portion 11, the outer surface of the chamfer 13, the outer surface of the side portion 12 of the present invention. fluorite carbon). Fluorite carbon is composed of dense tissues on molecular bonds, has high heat resistance and excellent chemical resistance.

Therefore, the durability of the horizontal support portion 11, the chamfer 13, the side portion 12 is greatly improved, so that even if the permanent drainage device embedded in concrete elapses for a long time does not corrode, rupture, damage.

Moreover, 44-57 weight% of crystalline polypropylene and ethylene butyl are at the bottom surface of the horizontal support part 11, the inner surface of the chamfer part 13, the inner surface of the side part 12, and both side surfaces of the inclination reinforcement part 15. Polypropylene resin composition consisting of 9 to 21% by weight of the acrylate polymer, 7 to 25% by weight of the styrene-based hydrogenated block copolymer, and 10 to 23% by weight of the inorganic filler may be applied.

Here, the crystalline polypropylene includes at least one selected from a crystalline polypropylene homopolymer and a propylene-alpha olefin crystalline copolymer containing C2 to C20 (exclusive of C3) alpha olefins, and the crystalline polypropylene The melt flow index (230 DEG C, load of 2.16 kg) is 20 to 60 g / 10 min, and the isotactic peptid fraction measured by 13 C-NMR (nuclear magnetic resonance spectrum) is 0.80 to 0.99.

Also, the content of butyl acrylate in the ethylene butyl acrylate polymer is 20 to 40% by weight and the melt index (190 ° C, 2.16 kg load) is 20 to 200 g / 10 min.

In the styrene-based hydrogenated block copolymer, the styrene content is 18% by weight or more. The styrene-based hydrogenated block copolymer is a styrene-ethylene-butene-styrene block copolymer (SEBS), a styrene-ethylene-propylene-styrene block copolymer SEPS), styrene-butadiene-butylene-styrene block copolymer, styrene-ethylene-isoprene-styrene block copolymer and acrylonitrile-butylene-styrene block copolymer.

The polypropylene resin composition will be described in detail as follows.

First, the polypropylene resin composition may include a crystalline polypropylene, an ethylene butyl acrylate polymer, a styrene-based hydrogenated block copolymer and an inorganic filler as described above.

The crystalline polypropylene may include at least one selected from a crystalline polypropylene homopolymer and a propylene-alpha-olefin crystalline copolymer comprising C2 to C20 (excluding C3) alpha-olefin monomers.

Specific examples of the alpha-olefin monomers may be ethylene, 1-butene, 1-pentene, 1-hexene, 4-methylpentene, 1-heptene, 1-octene and 1-decene and preferably ethylene. The propylene-alpha olefin crystalline copolymer may be a block copolymer or a random copolymer, but is not limited thereto.

The content of the polymerization unit of propylene in the propylene-alpha-olefin crystalline copolymer is not particularly limited, but is preferably 50 wt% or more in the copolymer.

The crystalline polypropylene is not particularly limited in terms of stereoregularity, but any crystalline polypropylene that can achieve the object of the present invention can be used without limitation, and more specifically, ¹³ C-NMR (nuclear magnetic resonance spectrum) The isotactic peptad fraction may be 0.80 to 0.99, preferably 0.85 to 0.99.

The melt flow index (MFI, 230 ° C, 2.16 kg load) of the crystalline polypropylene may be 20 to 60 g / 10 min, preferably 20 to 50 g / 10 min.

The crystalline polypropylene may be contained in an amount of 44 to 57% by weight based on the resin composition. If the content of the crystalline polypropylene is less than 44% by weight, the coating adhesion may be deteriorated. If the content of the crystalline polypropylene is more than 57% by weight, the flexural modulus and the coating adhesion may be lowered.

The ethylene butyl acrylate polymer will be described as follows.

The butyl acrylate in the ethylene butyl acrylate polymer may be contained in an amount of 20 to 40% by weight, preferably 25 to 40% by weight, based on the weight of the polymerized units.

The ethylene butyl acrylate polymer may be contained in an amount of 9 to 21% by weight based on the polypropylene resin composition. If the content of the ethylene butyl acrylate polymer is less than 9% by weight, the coating adhesion is poor, and if the content exceeds 21% by weight, the flexural modulus may be significantly reduced.

The melt index (190 ° C, 2.16 kg load) of the ethylene butyl acrylate copolymer may be 5 to 250 g / 10 min, preferably 10 to 200 g / 10 min.

The styrene-based hydrogenated block copolymer can further improve the paint adhesion and impact resistance of the polypropylene resin composition.

The styrene-based hydrogenated block copolymer may be a styrene-ethylene-butene-styrene block copolymer (SEBS), a styrene-ethylene-propylene-styrene block copolymer (SEPS), a styrene-butadiene- Ethylene-butene-styrene block copolymer (SEBS) and styrene-ethylene-butylene-styrene block copolymer, ethylene-isoprene-styrene block copolymer and acrylonitrile- -Propylene-styrene block copolymer (SEPS).

The styrene-based hydrogenated block copolymer may be contained in an amount of 7 to 21% by weight, preferably 10 to 18% by weight, based on the polypropylene resin composition. When the content of the styrene-based hydrogenated block copolymer is less than 7% by weight, the coating adhesion is decreased. When the content of the styrene-based hydrogenated block copolymer is more than 21% by weight, mechanical properties such as rigidity and coating adhesion may be lowered.

The inorganic filler may be used to reinforce the rigidity of the polypropylene resin composition, and the inorganic filler may be at least one selected from the group consisting of talc, barium sulfate, and calcium carbonate, preferably talc.

The particle size of the talc can be determined from the grain size of 50% by weight accumulated from the particle cumulative distribution curve measured according to the laser diffraction method, and the average particle size can be 10 탆 or less, preferably 0.5 to 8 탆. If the particle diameter of the talc is out of the above range, the flexural modulus may be lowered, which is not preferable.

The talc may contain various organic titanate-based coupling agents, organic silane coupling agents, unsaturated carboxylic acids, or anhydrides thereof in order to improve the adhesiveness or dispersibility with the polymer. Grafted polyolefins, fatty acids, fatty acid metal salts, fatty acid esters, and the like.

The inorganic filler may be contained in an amount of 10 to 23% by weight, preferably 10 to 21% by weight, based on the polypropylene resin composition. If the content of the inorganic filler is less than 10% by weight, the flexural modulus may be insufficient or the coating adhesion may be deteriorated. If the content of the inorganic filler is more than 23% by weight, the impact resistance may be deteriorated.

The polypropylene resin composition according to the present invention may further comprise a rubber component in order to further improve the paintability or to reinforce the low-temperature impact resistance. The rubber component may further comprise an ethylene-alpha-olefin copolymer or an ethylene-alpha-olefin elastomer rubber, and the alpha-olefin may be a C2 to C20 alpha-olefin, Ethylene-1-butene copolymer.

The polypropylene resin composition according to the present invention may be prepared according to a method for preparing a resin composition known in the art, and for example, the components may be added to a stirring-mixing device (eg, a Hensel mixer, a super mixer or a tumbler mixer). The mixture can be prepared by stirring-mixing the mixture for 1-10 minutes, melting and kneading using a rolling mill or an extruder at a temperature of 180-230 ° C.

Accordingly, the polypropylene resin composition according to the present invention is excellent in coating adhesion, flexural modulus, and Izod impact strength without applying a primer during coating. Therefore, the polypropylene resin composition is applied to the bottom surface of the horizontal support portion 11, the inner surface of the chamfer portion 13, the inner surface of the side surface portion 12, and both side surfaces of the inclined reinforcement portion 15, thereby improving paint adhesion and impact resistance. Thus, the quality of the permanent drainage system can be improved.

On the other hand, the bottom surface of the horizontal support 11, the inner surface of the chamfer 13, the inner surface of the side portion 12, both sides of the slope reinforcing portion 15 may be coated with a perfume material containing functional oil in the perfume. The mixing ratio is 95 to 97% by weight of the functional oil is mixed with 3 to 5% by weight of functional oil, functional oil is composed of 30% by weight of poison, 25% by weight of vines, 25% by weight of gold, 20% by weight of citronella. .

Accordingly, as the perfume material having sterilization and disinfection functions is coated on the bottom surface of the horizontal support 11, the inner surface of the chamfer 13, the inner surface of the side surface 12, and both side surfaces of the slope reinforcing portion 15, By disinfecting and killing insects, the permanent drainage system can be kept clean and groundwater can be purified.

The fragrance material may be mixed with functional oils, the mixing ratio of which is 95 to 97% by weight of the functional oil is mixed with 3 to 5% by weight of the functional oil. Wt%, citronella 20 wt%.

It is preferable that the functional oil is mixed in an amount of 3 to 5% by weight based on the perfume. If the mixing ratio of the functional oil is less than 3 wt%, the effect is insignificant. If the mixing ratio of the functional oil exceeds 5 wt%, the function is not greatly improved, but the manufacturing cost is greatly increased.

Among the functional oils, Udo belongs to the family Arboraceae, and chemical components include Humulene, Limonen, etc. It has excellent bacterial toxic effects and shows good antibacterial effects.

Five-leaf akebia and chocolate vine are chemical components such as Betulin and Oumarin. They have excellent antibacterial and bactericidal effects.

Goldcap (Skullcap) belongs to Lamiaceae, and chemical components include Baicalein, Scutellarein, etc., and is effective in antibacterial and bactericidal action.

Citronella is citronellal, geraniol, etc. as main chemical components, and has excellent sterilization and insecticidal effects.

The present invention, as the functional oil is coated on the bottom surface of the horizontal support 11, the inner surface of the chamfer 13, the inner surface of the side portion 12, both sides of the slope reinforcing portion 15, such as sterilization, insecticide It is an eco-friendly product that keeps the permanent drainage system clean and purifies the ground water.

The water permeability of the present invention can be confirmed by the following formula.

Permanent drainage device of the present invention can be applied to the BAZIN formula because the same concept as the drainage form of the bundle.

A) The effective drainage cross-sectional area (A) and the wheeling length of the permanent drainage device of the present invention are calculated as follows.

A (effective drainage cross sectional area): 2,748㎡ wheel length: 350㎜

Effective drainage cross-section A = 0.002748㎡ of permanent drainage device of the present invention

The wheel length L of the permanent drainage device of the present invention is 0.350 m.

B) The water drainage capacity of the permanent drainage system of the present invention applies the BAZIN formula.

Q _outside = A x V

Where Q: Drainage flow rate (m ³ / day)

A: Effective drainage cross-sectional area (m ² ), V: Flow rate (m / sec)

V = C√RI = 77.4 x √ (0.007851 x 0.02) = 0.970 m / sec

C (flow coefficient) = 87 / (1 + n ÷ √R) = 87 / {1 + 0.011 ÷ (√7.851x10 ^-3 )} = 77.4

R: Mind of gravity (A / L, m), n: Roughness coefficient (0.011), I ^(※) : Pitch inclination

R = 0.002748 / 0.350 = 7.851 x 10 ^-3 m

L = 0.350 m, L: Cycle length of drainage track (m)

※ The hydraulic inclination (i) is the allowable positive pressure (Δh) / the maximum groundwater movement distance (L), and the maximum movement distance is 50m in all the groundwater induced drainage, so the hydraulic inclination is 1.0 (positive pressure) / 50 (maximum movement distance) 0.02.

      Q = A x V = 0.002748 x 0.970

= 2.66556 x 10 ^-3 m ³ / sec

= 230.30 m ³ / day

Therefore, the maximum passing amount of the present invention, Q = 230.30 m ³ / day.

The permanent drainage device for buildings of the present invention has a larger amount of water passing than the permanent drainage device having a cylindrical cross section, and is more robust than a permanent drainage device having a rectangular cross section.

Permanent drainage device for buildings of the present invention having such a water capacity has the following advantages.

First, the present invention is formed to be inclined at the upper end of the side portion 12 and both ends of the horizontal support portion 11 so as to distribute the load acting on the horizontal support portion 11 to the side portion 12 and the drain passage ( 17) A pair of internally provided, the upper end is integrally connected to the horizontal support 11, the lower end is supported on the bottom and the inclined reinforcement 15 is formed so that the horizontal interval gradually increases toward the lower end from the upper end.

Therefore, the load acting on the horizontal support part 11 is distributed to the side part 12 through the chamfers 13 on both sides of the horizontal support part 11, and the load acting on the central part of the horizontal support part 11 is inclined reinforcement part 15. It is distributed and supported by).

Therefore, the load acting on the horizontal support portion 11 is evenly distributed and supported by the chamfer 13 and the slope reinforcement portion 15, thereby minimizing partial breakage of the permanent drainage device.

Second, the chamfer 13 of the present invention is formed to be inclined at the upper end of the side portion 12 and both ends of the horizontal support portion 11 to distribute the load acting on the horizontal support portion 11 to the side portion 12, the side portion 12 ) And the notched portion formed between the horizontal support 11 and the first notch 18 and the second notch 19.

Therefore, since the stress concentrated in one place by the chamfer 13 is distributed to the first notch 18 and the second notch 19, the stress is dispersed so that it is not concentrated in one place, thereby reinforcing the weak part. Minimize the damage caused by the load.

Third, when the present invention is based on the cross section of the drain passage 17, the horizontal width between the side portions 12 is 85 to 95 mm, and the total height from the bottom to the horizontal support portion 11 is 38 to 42 mm. If the horizontal width is less than 85 mm, the amount of water is reduced, and if the horizontal width is more than 95 mm, the amount of water is increased, but the amount is weak to external loads.

If the total height from the floor to the horizontal support portion 11 is less than 38 mm, the amount of water is reduced. If the total height from the bottom to the horizontal support portion 11 is more than 42 mm, the amount of water is increased, but the amount of the water is weak to external load. .

Therefore, in consideration of the amount of water passing and the supporting force for the load acting on the horizontal support portion 11 when the horizontal width between the side portions 12 is 85 ~ 95mm, when the total height from the floor to the horizontal support portion 11 is 38 ~ 42mm In other words, the maximum amount of water in the permanent drainage system is maximized while the height is minimized. Therefore, the thickness of the concrete placed on top of the permanent drainage system is reduced accordingly, thereby improving workability and saving construction stage.

Fourth, the vertical height of the side part 12 of the present invention is 1/2 of the total height, and the angle θ2 of the chamfer 13 with respect to the vertical line is 35 to 45 °. If the vertical height of the side portion 12 is less than 1/2 of the total height and the angle θ2 of the chamfer 13 with respect to the vertical line is less than 35 °, the notch angle of the first notch portion 18 decreases rapidly. When the stress is concentrated in this portion, and the vertical height of the side portion 12 exceeds 1/2 of the total height and the angle θ2 of the chamfer 13 with respect to the vertical line exceeds 45 °, the second notch portion As the notch angle in (19) decreases drastically, stress generation is concentrated in this area.

Accordingly, the vertical height of the side portion 12 is 1/2 of the total height, and the angle θ2 of the chamfer 13 with respect to the vertical line is 35 to 45 ° to maximize the dispersing effect of the notch portion and the first notch portion 18 ) And the second notch portion 19 to prevent the concentration of stress.

Fifth, the present invention is coated with a special silicon layer on the upper surface of the horizontal support 11, the outer surface of the chamfer 13, the outer surface of the side portion 12, the special silicon layer is fluorite carbon (fluorite carbon) Is done. The special silicon layer made of fluorite carbon is composed of a dense structure on molecular bonds and has high heat resistance and excellent chemical resistance.

Therefore, the durability of the horizontal support 11, the chamfer 13, and the side 12 is greatly improved, so that even if the horizontal support 11, the chamfer 13, and the side 12 embedded in the discarded concrete have elapsed for a long time , Rupture, not damaged.

Sixth, the present invention is 44 to 57% by weight of the crystalline polypropylene around the lower surface of the horizontal support portion 11, the inner surface of the chamfer 13, the inner surface of the side portion 12, the inclined reinforcement portion 15 And a polypropylene resin composition composed of 9 to 21% by weight of an ethylene butyl acrylate polymer, 7 to 25% by weight of a styrene-based hydrogenated block copolymer, and 10 to 23% by weight of an inorganic filler.

Such a polypropylene resin composition can improve the quality of the product because it is excellent in paint adhesion and impact resistance even without applying a primer as an adhesive modifier, it has the effect of extending the life of the product.

Seventh, the present invention is a fragrance material containing functional oil in the scent around the lower surface of the horizontal support 11, the inner surface of the chamfer 13, the inner surface of the side portion 12, the inclined reinforcement portion 15 The coating ratio is 95 to 97% by weight of the functional oil is mixed with 3 to 5% by weight of functional oil, functional oil is 30% by weight of poison, 25% by weight of vine, 25% by weight of gold, citronella 20 Weight percent.

Therefore, as the fragrance material having a sterilization, disinfection function, etc. is coated, it is possible to obtain the effect of keeping the permanent drainage device clean and purifying the ground water by acting as sterilization and insecticide.

1: geotextile 11: horizontal support
12: side portion 13: chamfer
14: side support 15: inclined reinforcement
16: reinforcement support 17: drainage passage
18: first notch 19: second notch
20: notch

Claims (5)

A pair of side portions 12 constituting both sides of the drain passage 17 to guide the drainage of the introduced groundwater;
A side support 14 provided at the lower end of the side part 12 and in close contact with the bottom to support the lower side of the side part 12;
A horizontal support part 11 forming an upper part of the drain passage 17 and supporting a load acting on the upper part;
A chamfer portion 13 which is formed at an upper end of the side portion 12 and both ends of the horizontal support portion 11 so as to distribute the load acting on the horizontal support portion 11 to the side portion 12;
A pair of inclined reinforcement parts 15 provided in the drainage passage 17 and having upper ends integrally connected to the horizontal support part 11 and lower ends being supported on the floor and horizontal gaps gradually widening toward the lower ends from the upper ends;
It is made of a reinforcement support 16 is integrally connected to the lower end of the slope reinforcement portion 15 and in close contact with the bottom to support the load acting on the horizontal support portion 11;
The chamfer 13 disperses the notch portion formed between the side portion 12 and the horizontal support portion 11 to the first notch portion 18 and the second notch portion 19 to distribute the stress concentrated on the notch portion. And;
The angle θ1 of the slope reinforcing portion 15 is 30 to 40 degrees;
Based on the cross section of the drain passage 17, the horizontal width between the side portions 12 is 85 to 95 mm, the total height from the bottom to the horizontal support portion 11 is 38 to 42 mm, and the vertical height of the side portions 12 is 1/2 of the total height, the angle θ2 of the chamfer 13 with respect to the vertical line constitutes 35 to 45 °, and the horizontal spacing between the reinforcement support 16 and the side support 14 is the side support 14. Permanent drainage device for buildings, characterized in that the same as the horizontal width and half of the horizontal width of the reinforcement support 16.
delete delete A pair of side portions 12 constituting both sides of the drain passage 17 to guide the drainage of the introduced groundwater;
A side support 14 provided at the lower end of the side part 12 and in close contact with the bottom to support the lower side of the side part 12;
A horizontal support part 11 forming an upper part of the drain passage 17 and supporting a load acting on the upper part;
A chamfer portion 13 which is formed at an upper end of the side portion 12 and both ends of the horizontal support portion 11 so as to distribute the load acting on the horizontal support portion 11 to the side portion 12;
A pair of inclined reinforcement parts 15 provided in the drainage passage 17 and having upper ends integrally connected to the horizontal support part 11 and lower ends being supported on the floor and horizontal gaps gradually widening toward the lower ends from the upper ends;
It is made of a reinforcement support 16 is integrally connected to the lower end of the slope reinforcement portion 15 and in close contact with the bottom to support the load acting on the horizontal support portion 11;
The chamfer 13 disperses the notch portion formed between the side portion 12 and the horizontal support portion 11 to the first notch portion 18 and the second notch portion 19 to distribute the stress concentrated on the notch portion. And;
The angle θ1 of the slope reinforcing portion 15 is 30 to 40 degrees;
On the bottom of the horizontal support 11, the inner surface of the chamfer 13, the inner surface of the side portion 12, both side surfaces of the inclined reinforcement portion 15,
Polypropylene resin composition comprising 44 to 57% by weight of crystalline polypropylene, 9 to 21% by weight of ethylene butylacrylate polymer, 7 to 25% by weight of styrene-based hydrogenated block copolymer, and 10 to 23% by weight of inorganic filler Permanent drainage for buildings, characterized in that the coating.
A pair of side portions 12 constituting both sides of the drain passage 17 to guide the drainage of the introduced groundwater;
A side support 14 provided at the lower end of the side part 12 and in close contact with the bottom to support the lower side of the side part 12;
A horizontal support part 11 forming an upper part of the drain passage 17 and supporting a load acting on the upper part;
A chamfer portion 13 which is formed at an upper end of the side portion 12 and both ends of the horizontal support portion 11 so as to distribute the load acting on the horizontal support portion 11 to the side portion 12;
A pair of inclined reinforcement parts 15 provided in the drain passage 17 and having upper ends integrally connected to the horizontal support part 11 and lower ends being supported on the floor and horizontal gaps gradually widening toward the lower ends from the upper ends;
It is made of a reinforcement support 16 is integrally connected to the lower end of the slope reinforcement portion 15 and in close contact with the bottom to support the load acting on the horizontal support portion 11;
The chamfer 13 disperses the notch portion formed between the side portion 12 and the horizontal support portion 11 to the first notch portion 18 and the second notch portion 19 to distribute the stress concentrated on the notch portion. And;
The angle θ1 of the slope reinforcing portion 15 is 30 to 40 degrees;
The bottom surface of the horizontal support 11, the inner surface of the chamfer 13, the inner surface of the side portion 12, both sides of the slope reinforcing portion 15 is coated with a perfume material containing functional oil in the perfume,
The mixing ratio is 95 to 97% by weight of functional oil is mixed with 3 to 5% by weight of functional oil, functional oil is composed of 30% by weight of poison, 25% by weight of vine, 25% by weight of gold, 20% by weight of citronella Permanent drainage device for buildings.

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