KR20110062730A - Extensive green roof system and construction method - Google Patents

Abstract

PURPOSE: A rooftop greening system and a construction method thereof are provided to improve the heat-insulating efficiency of the system without increasing the load of the system by including an air layer as a buffer zone. CONSTITUTION: A rooftop greening system(10) comprises the following: a waterproof layer(12) preventing the moisture from the rooftop greening system from leaking into a building; a root-proof layer(15) for protecting the waterproof layer and the building from roots of plants and the mechanical and physical impact when constructing the rooftop greening system; a drainage layer(16) preventing the soakage of the roots of the plants from massive amount of rainwater; a filter layer(17) preventing fine-grained soil from inserting into the lower side of the system by the rainwater; and a buffer zone(13) located in between the waterproof layer and the root-proof layer.

Description

Low management-lightweight rooftop recording system and construction method with high insulation performance {EXTENSIVE GREEN ROOF SYSTEM AND CONSTRUCTION METHOD}

The present invention relates to a rooftop greening system and a construction method, and more particularly, to improve thermal insulation and thermal insulation performance in a rooftop greening system that uses green artificial ground formed on or outside a building to create green spaces in a pedestrian space in a city. The present invention relates to a low management-lightweight rooftop greening system and construction method having high insulation performance.

Due to the rapid industrialization and urbanization over the past half century, most cities have deteriorated their living environment and natural environment. Each year, many buildings and sculptures are built in urban areas. It hurts people, deteriorates the quality of life of people living in cities, and hurts the emotional stability of the people.

Therefore, in order to create a pleasant urban environment and to restore the natural ecosystem, rebuilding the green space in the city and preserving the existing green space have emerged as important issues. In order to solve this problem, there is a growing interest in greening landscaping on the roof of a building, and various roofing greening methods have been proposed.

In general, a rooftop greening system for landscaping greening facilities on the roof of a building not only provides green spaces to urban residents by creating green spaces in buildings, but also creates various plants in the green spaces where insects can live. It can also provide people with a seating area and enhance the aesthetics of the building.

In addition, rooftop greening has a significant effect on saving energy of buildings and heating because it takes longer to transmit the outside temperature because the thermal conductivity is lower than that of the existing non-green roof due to the effect of mitigating the heat island phenomenon and thermal insulation or insulation. In addition, various research and greening projects are underway, which can bring the effects of rainwater storage, temperature adjustment, air purification, and noise reduction.

The types of rooftop recording system are classified into low management type-light type, management type-weight type recording system and mixed type recording system. The low management type / light type has a low soil depth (less than 20cm) and the weight of soil is 100kg per ㎡. It should be internal and external, and is mainly planted as a cover plant, and the plant first planted with minimal management has the advantage of lasting for 10 to 15 years without being affected by the heterologous species. It refers to a system in which the vegetation layer is maintained without constant management such as watering, fertilization, and mowing. The soil uses artificial soil.

The management-weight rooftop greening system has a soil depth of 20 cm or more to plant land plants, trees and shrubs. It is most suitable for small ecosystems in that it can be planted freely without regard to the introduction of soil and plant species, but it is mainly applied to new buildings with structural stability as it has a significant effect on the roof load.

 The mixed rooftop recording system is a mixture of light weight and heavy weight, and maintains a low soil depth of 10 ~ 20cm, but partially makes hills to plant tall shrubs. Shrubs should be planted wherever structural strength is relatively strong.

Among the rooftop greening systems, the low-end roofing greening system corresponds to a low management-lightweight greening system, so the structural premise, water resistance (durability) and economic efficiency of the building are the basic premise. Management-Heavy-type greening system Depth of 20 cm or more is required. As the soil load is heavy, the load of the building increases, which affects the structural stability of the building and is not applicable to existing buildings. The lightweight rooftop greening system is applicable to both new and existing buildings due to the low load on the building. Especially, the rooftop greening system is applicable to the rooftop of existing buildings, which occupy a relatively large proportion in the city, Because of its shallowness, thermal insulation and thermal insulation performance is poor.

The "roofing system and its construction method" devised to solve the above problem is registered Patent No. 0553005. Referring to FIG. 1, the structure and construction method will be described. It is installed in the pressed layer (2) to protect the building from the pressed layer (3), the pressed concrete (3), which is placed on the pressed layer to protect the root layer (2) from mechanical and physical shocks, Waterproof layer (4) to prevent leakage, installed on the waterproof layer (4) and drainage layer (5) to prevent the drowning of plant roots by flooding the greening system due to a large amount of rain (rain water), fine grain soil system bottom Filter layer (6) with filtration function to prevent loss by rainwater, growing soil layer (7) as a base for continuous growth of plants, and planting planting plants at the top of greening system It is composed of floors (8). The rooftop greening system as described above is a low-maintenance-lightweight greening system with a depth of soil of 20 cm or less, but it is made of pressed concrete (3) which is poured to protect the floor layer (2). Due to the ease of overloading the building, it is difficult to use in existing buildings that are weak in stability of the building, and there is a problem in that the installation cost due to the pouring of pressed concrete increases. In addition, there is a problem that the heat shield and insulation performance is lower than the management-weight recording system.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an insulating layer by additionally configuring an air layer called a buffer zone in a low-light-weight rooftop greening system installed on the roof of a building. It can reduce the cooling and heating energy by improving the insulation performance by improving the insulation performance, and has a high insulation performance that can be applied to new buildings or existing buildings without affecting the structural stability without increasing the load due to soil depth. To provide a management-lightweight rooftop greening system and construction method.

Low management-lightweight rooftop greening system and construction method having a high insulation performance according to the present invention for solving the above problems, the waterproof layer to block the water leakage of the rooftop greening system sequentially to the building floor surface , The waterproofing layer and the roofing greening system that protects the building from the roots of plantings, and the rooftop greening system are flooded due to a large amount of rainwater to prevent drowning of the roots of plants and to drainage and rainwater that discharge water other than the effective moisture. Filter layer which prevents washed-off fine soil from being lost to the lower part of the system, growing soil layer that is the foundation for continuous growth of plants, and the top of the rooftop greening system, and are laminated with planting layers where plants are planted. The configuration is characterized by including a buffer zone between.

Preferably, the buffer zone is provided with a panel-shaped support having an "I" shape in longitudinal section, and an air layer is formed between the supports to insulate.

Low management-lightweight rooftop recording system and construction method having high insulation performance according to the present invention having the features as described above, the buffer zone (buffer zone) compared to the conventional low management-lightweight rooftop recording system (insulation layer) It is possible to improve insulation performance, thereby significantly saving energy for building cooling and heating, and to apply to existing buildings that are structurally vulnerable because the soil load is not increased. The reflection and solar evaporation effect of solar radiation due to the greenery has the effect of alleviating the urban heat island phenomenon, and the rooftop greening system of the soil within 10cm is less than 70% of the actual rainfall due to the absorption capacity and evaporation of the soil layer. ) Emission reduction efficiency helps to prevent urban flooding, air purification, water purification, noise reduction, When you can see the number of interest phenomenal effects such as an increase in the durability of the effect of improving landscapes and buildings.

 An embodiment of a low management-lightweight rooftop greening system and construction method having high insulation performance according to the present invention will be described with reference to FIG.

 2 is a cross-sectional view showing a cross-sectional state of a low management-lightweight rooftop greening system having a high insulation performance in which a buffer zone 13 is further configured.

In the rooftop greening system that uses green artificial ground formed on the roof of a building according to the present invention to create greenery in the pedestrian space of the city, the rooftop greening system 10 is a waterproof layer (sequentially) on the floor 11 of the rooftop. 12), the root barrier layer 15, the drainage layer 16, the filter layer 17, the growing soil layer 18, the planting layer 19 is laminated and configured, the buffer layer between the waterproof layer 12 and the root layer 15 It is a structural feature that the zone 13 is configured.

The low management-lightweight rooftop recording system has a rooftop floor (11), a waterproof layer (12), a root barrier layer (15), a drainage soil layer (16), a filter layer (17), a growing soil layer (18), and a planting layer (19). In general, the rooftop greening system 10 further includes a buffer zone 13 between the waterproof layer 12 and the barrier layer 15, and the buffer zone 13 includes: A panel-shaped support 14 having an "I" shape in the longitudinal section is installed to support the root barrier layer 15 and the structure thereon.

The support 14 is preferably made of a high-density polyethylene material having a high impact resistance. In addition, an air layer for adiabatic action is formed between the supports 14.

The rooftop greening system 10 delays the increase in the indoor temperature due to the radiant heat of the sun shining on the rooftop of the building during the summer, and prevents the cool air from coming into direct contact with the room through the rooftop in the winter. do. The rooftop greening system 10 may have a thermal insulation effect such as a heat insulating material that maintains indoor temperature stably by blocking outside air directly contacting the rooftop surface 11 of the building during the summer and winter. By further configuring the buffer zone 13 in the rooftop recording system 10, the air layer formed in the buffer zone 13 serves as a heat insulation layer, thereby further improving the thermal insulation and insulation performance of the rooftop recording system.

When explaining the features of each of the above structure,

The waterproof layer 12 serves to block the water leakage of the rooftop greening system 10 to the building, and the precision and durability of the waterproofing have a great effect on the durability of the entire greening system. A poly (olefin) waterproof sheet is installed to form a waterproof membrane on the rooftop surface. The waterproof sheet is a waterproof film made of PVC (polyvinyl chloride) material, resistant to decay by microorganisms, no cracking due to ultraviolet rays or sunlight, and a root impervious seal (root impervious seal), which does not penetrate the roots of trees. In addition, the thermal insulation effect is more than 30% better than other products, and it can be installed on any base material. The waterproof layer may be treated with polyurethane waterproofing, FRP coating waterproofing and urethane-FRP composite waterproofing, which are waterproof waterproofing agents having excellent weather resistance, mechanical properties and workability. In general, when the building is constructed, roofing and greening is carried out after the waterproofing and pressing concrete is poured.

The barrier layer 15 protects the waterproof layer and the building from the roots of the planting material, as well as the waterproof layer from mechanical and physical shocks that may occur when the greening system is constructed. As the material for the root barrier layer 15, a sheet type, a prefabricated panel type, and the like are used. Sheet type materials include PVC type and copper sheet type, and panel type is mainly composed of synthetic resin type and metal type. Also in the sheet-like and panel-type waterproofing materials, a seal treatment should be performed to prevent invasion of planting roots, etc., at the time of construction, or supplemented with an aluminum valve or a copper joint tape.

In the present invention, the barrier layer 15 is formed by spreading a polyethylene film (PE film) having excellent abrasion resistance and chemical resistance, and is also subjected to a seal treatment on an overlapping portion or a joint portion of the polyethylene film, an aluminum valve, a copper joint tape, or the like. It is preferable to process, and the insulating layer 15 may be further provided with a heat insulating cover (not shown), such as a non-woven fabric on the root layer 15 in order to prevent damage to the external impact.

 A buffer zone 13 is formed between the waterproof layer 12 and the barrier layer 15. The panel zone support 14 having a “I” -shaped longitudinal section is installed in the buffer zone 13 so that an air layer is formed. The support serves to support the root layer 15 and the structure thereon, that is, the drainage layer 16, the filter layer 17, the growing soil layer 18 and the planting layer 19. The air layer formed in the space between the support 13 may insulate the building to reduce cooling and heating energy.

The drainage layer 16 prevents the rooftop greening system from being flooded due to a large amount of rainwater and prevents drowning of the roots of the plant. The drainage layer 16 may be used for drainage by leaving a storage groove (not shown) by discharging water other than the effective moisture. have.

The drainage layer 16 is formed by installing a panel of E.P.S (Expanded Polystyrene) material and a drain material of a cadmium block made of high density polyethylene. The drainage has a storage groove to solve the storage and drainage of water and has an insulating effect. The drainage layer 16 is an important part for the growth of planting, and the drainage includes vertical drainage flowing downward from the growing soil layer 18 and horizontal drainage flowing outward with drainage openings in the center of the growing soil. If the drainage is not desired, overflow occurs during heavy rain, so the drainage layer 16 provides a gradient in a drainage (not shown) direction to smooth horizontal drainage, and the drainage is lower than the drainage layer 16. It is preferable to be formed in, and to install a check hole (not shown) in order to prevent the drain is clogged with fallen leaves or garbage.

The filter layer 17 is formed of a nonwoven fabric made of P.P (polypropofylene) material having a filtration function and a water permeation function so that the fine soil washed by rainwater is not lost to the lower part of the system.

The growing soil layer 18 is the basis for the continuous growth of plants and occupies most of the weight of the roofing greening system, so it is necessary to reduce the weight for stability and durability of the building, thus forming a lightweight soil-based growing soil layer 18. Soil is formed by mixing peat moss, ovaries, and pearlite, and the mixture of peat moss, ovaries, and pearlite in a ratio of 1: 1: 0.5 is used. The ovary should use medium size 50%, large size and small size 25% each, and should be able to store moisture well.

Planting layer (19) is the topmost component in the roofing greening system should be planted in consideration of maintenance, soil layer and soil characteristics. The plant should have dry, cold and moisture resistance. It is preferable to plant mainly ground cover plants, flowers and small shrubs.

The construction step of the rooftop greening system will be described below.

The rooftop greening system 10 installed on the roof of a building may include: installing a waterproof sheet made of PVC / PO on the rooftop surface 11 to form a waterproof layer; Installing a panel support (14) to form a buffer zone (13) over the waterproof layer (12); Spreading a polyethylene film (PE film) on the support 14 to form a root barrier layer 15; Forming a drainage layer (16) by installing an E.P.S (Expanded Polystyrene) panel or a cadmium block on the rooting layer (15); Forming a filter layer (17) by spreading a nonwoven fabric of P.P material on the drainage layer (16); Forming a light soil-based growing soil layer (18) on the filter layer (17); It comprises a step of forming a planting layer (19) consisting of small shrubs and ground cover plants on the growing soil layer (18).

The low management-lightweight rooftop greening system and construction method configured as described above are rooftop greening systems that can be installed in new buildings as well as structurally vulnerable existing buildings by improving insulation performance without adding additional soil load.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1 is a cross-sectional view showing a conventional rooftop greening system.

2 is a cross-sectional view showing a rooftop greening system according to the present invention.

DESCRIPTION OF REFERENCE NUMERALS

10. Rooftop Greening System 11. Rooftop

12.Waterproof layer 13.Buffer zone

14. Support 15.

16.Drainage layer 17.Filter layer

18. Soil layer to grow 19. Plant layer

Claims (8)

In a rooftop greening system that uses green artificial ground formed on the roof of a building to create green spaces in the pedestrian space of the city, The rooftop greening system includes a waterproof layer that sequentially blocks water from the rooftop greening system from leaking into the building, a waterproofing layer that protects the waterproofing layer and the building from the roots of the plant, and the rooftop greening system has a large amount of rainwater. It prevents drowning and drowning of plant roots by flooding, filter layer to prevent drainage of water other than effective water, fine soil to be washed away from rainwater, and soil layer to cultivate soil. It is made up of the top of the roofing greening system, laminated with a planting layer for planting, Low-lightweight rooftop recording system having a high insulation performance, characterized in that the buffer zone is configured between the waterproof layer and the weatherproof layer. The method of claim 1 The buffer zone is a low-maintenance rooftop greening system having a high thermal insulation performance, characterized in that the longitudinal support is provided with a panel-like support of the "I" shape to support the barrier layer and the structure thereon. The method of claim 2 The support is a low-maintenance-lightweight roofing greening system having a high insulation performance, characterized in that the high-density polyethylene material. 3. The method of claim 2, Low-light-weight rooftop greening system having a high insulation performance, characterized in that the insulating air layer is formed between the support. Forming a waterproof layer by installing a waterproof sheet made of PVC / PO on a rooftop surface; Installing a panel support to form a buffer zone over the waterproof layer; Spreading a polyethylene film (PE film) on the support to form a barrier layer; Forming a drainage layer by installing a panel of E.P.S (Expanded Polystyrene) material or a cadmium block of high density polyethylene on the root layer; Spreading a nonwoven fabric of P.P material on the drainage layer to form a filter layer; Forming a light soil-based cultivating soil layer on the filter layer; A method of constructing a low management-lightweight rooftop greening system having a high insulation performance, characterized in that it comprises the step of forming a planting layer consisting of small trees and ground cover plants on the growing soil layer. The method of claim 5 The lightweight soil is a method of constructing a low-maintenance rooftop greening system having a high insulation performance, characterized in that formed by mixing peat moss, dolmen and pearlite. The method of claim 5 The waterproof layer is a construction method of a low-maintenance rooftop greening system having a high thermal insulation, characterized in that the construction is treated with polyurethane coating waterproofing, FRP coating waterproofing and polyurethane-FRP composite waterproofing. The method of claim 5 The root barrier layer is formed by spreading a polyethylene film (PE film), and has a high heat insulating performance, characterized in that the sealing (lap) treatment to the overlapping or bonded portions of the polyethylene film, or treated with an aluminum valve, a copper joint tape, or the like. Construction method of low management-lightweight roofing system.

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