CN202492974U - Roof system with buckled drainage board - Google Patents

Abstract

The utility model relates to a roof system with concave-convex drainage boards. The roof system comprises a structural base, a slope-finding layer, a drainage layer, an interlayer plastic board layer, a filter layer and a soil covering layer arranged sequentially from bottom to top. Compared with the prior art, the utility model can be matched with the integral planting roof system, and has root resistance and waterproof performance. The filter layer adopted prevents water from seeping away the fine soil and matrix components from the vegetation support layer to form mud, and Into the drainage layer, thereby preventing the mud from adversely affecting the water permeability of the drainage layer.

Description

A roof system with concave-convex drainage board

technical field

The utility model relates to a building roof, in particular to a roof system with concave-convex drainage boards.

Background technique

At present, the construction department and design department of our country have found that our country is backward in the field of planting roof waterproofing technology, so they are vigorously encouraging and promoting the formulation and compilation of relevant specifications and standards. JGJ155-2007 "Technical Regulations for Planting Roofs" has been released, and relevant specifications are being compiled as well as national industry engineering standards "Technical Regulations for Planting Roof Waterproof Engineering", national standard atlas "Standard Atlas for Planting and Greening", industry material standards "Green Waterproofing materials for roofing systems".

According to internationally recognized standards, according to the types of plants to be planted, the thickness of the required cultivation medium, and the growth height of the plants themselves, planted roofs are defined as heavy and light.

Heavy-duty planting roofs (also known as meticulous planting roofs) refer to planting a large number of trees, shrubs, etc. on the roof. The thickness of the planting layer of this type of roof is mostly greater than 1500mm. Heavy-duty planted roofs are usually paved with paths, pools, fitness facilities, etc., so as to develop and create ideal leisure and entertainment places in limited urban space. Japan has developed better in this respect, and its planting layer can be made to a thickness of only about 600mm. The natural "green hills" on the roof of the Osaka City Central Gymnasium, and the Namba Park developed on the roof of commercial buildings in the center of Osaka are all heavy-duty planting roofs. This type of roof uses modern technology to interpret the "hanging garden" of the ancient Babylonian kingdom.

Compared with heavy-duty planting roofs, light planting roofs (also called extensive planting roofs) are more economical and more suitable for promotion. This type of roof adopts light planting medium with a thickness of only about 50-300mm. The greening plants are mostly evergreen plants with small leaves, shallow roots, and strong wind resistance that are resistant to cold and high temperatures.

However, plant roots have obvious damage to the general flexible waterproof layer, and the traditional waterproof technology can no longer meet the waterproof requirements. At the same time, whether the retained water in the covering soil can be drained smoothly also affects the growth quality of plants. The success or failure of waterproof treatment directly affects the use effect of the roof garden and the safety of the building. Once a water leak is found, part or all of it has to be reworked.

Therefore, only the planting roof with special structure can better solve the above problems, ensure better waterproof effect, reduce maintenance cost, and can play the functions of heat insulation, heat preservation and noise reduction, and significantly improve the comprehensive benefits of society and economy.

Utility model content

The purpose of this utility model is to provide a roof system with concave-convex drainage boards that matches with the overall planting roof system and has root resistance and waterproof performance in order to overcome the above-mentioned defects in the prior art.

The purpose of this utility model can be achieved through the following technical solutions:

A roof system with concave-convex drainage boards. The roof system includes a structural base, a slope-finding layer, a drainage layer, an interlayer plastic board layer, a filter layer and a soil covering layer arranged sequentially from bottom to top.

The drainage layer is a drainage board with a concave-convex structure, and the drainage board is connected with the drainage system of the roof.

In the drainage plate with concave-convex structure, a drainage diversion groove is formed between the two convex structures, and the diversion groove is connected with the drainage system of the roof.

The filter layer is a geotextile layer, a non-woven layer or a glass fiber mat layer.

Compared with the prior art, the utility model can be matched with the integral planting roof system, and has root resistance and waterproof performance. The filter layer adopted prevents water from seeping away the fine soil and matrix components from the vegetation support layer to form mud, and Into the drainage layer, thereby preventing the mud from adversely affecting the water permeability of the drainage layer.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example

A roof system with a concave-convex drainage board, its structure is shown in Figure 1, the roof system includes a structural base 1, a slope layer 2, a drainage layer 3, a sandwich plastic board layer 4, and a filter layer 5 arranged in sequence from bottom to top And covering soil layer 6. The drainage layer 3 is a drainage board with a concave-convex structure. In the drainage board with a concave-convex structure, a drainage diversion groove is formed between two convex structures, and the diversion groove is connected with the drainage system of the roof. The filter layer 5 is a geotextile layer, a non-woven layer or a glass fiber mat layer.

Roof waterproofing and drainage are two aspects that complement each other. In addition to the construction of the waterproof layer, the drainage system of the roof must also be handled well. If the accumulated water in the planting soil is too much, the roots of the plants will rot. Therefore, for the planting roof, the setting of the drainage system is very necessary. This puts high demands on the soil and the hydrophobic layer. Use suitable materials for the hydrophobic layer to solve the problem of filtering and discharging excess water during raining and watering, so as not to cause water accumulation and cause plant root rot. A more complete method is to set a drainage layer and a filter layer on the waterproof structure layer of the planted roof, and then lay the covering soil vegetation layer.

In the planting roof system, the rainwater will flow horizontally to the drainage equipment of the roof through the top of the drainage layer 3 . Drainage layer 3 should ensure that rainwater can be effectively discharged, and ensure that plants and planting soil are not rotted or washed away. An important indicator of the performance of the drainage layer 3 is the maximum flow length, which must be considered when selecting the material of the drainage layer. While considering the drainage performance of the drainage layer, the anti-biological properties and carbonate content of the drainage layer should be considered according to the local water quality. The new drainage composite system also helps to reduce the weight of the overall system through the treatment of drainage.

Drainage layer 3 can adopt special-purpose plastic drainage board with concave-convex structure with sufficient gaps and certain bearing capacity. The raw materials of the concave-convex drainage board have long-term stability, and the refractory substances are placed in the interlayer that is not exposed to sunlight, and the decomposition period is more than 100 years.

Claims (4)

1. A roof system with a concave-convex drainage board, characterized in that the roof system includes a structural base, a slope layer, a drainage layer, an interlayer plastic plate layer, a filter layer and an overburden layer arranged successively from bottom to top. 2. A roof system with a concave-convex drainage board according to claim 1, wherein the drainage layer is a drainage board with a concave-convex structure, and the drainage board is connected with the drainage system of the roof. 3. A roof system with a concave-convex drainage board according to claim 2, characterized in that, in the drainage board with a concave-convex structure, a drainage diversion groove is formed between the two convex structures, and the drainage diversion groove is formed between the two convex structures. The launder is connected to the drainage system of the roof. 4. A roof system with a concave-convex drainage board according to claim 1, wherein the filter layer is a geotextile layer, a non-woven fabric layer or a glass fiber felt layer.