1. Project overview
2. Introduction of community underground garage roof planting system
3. Design scheme of garage roof drainage protection system
4. Introduction of 25mm high polyethylene storage and drainage board
5. Installation and construction process of drainage board
6. Finished product protection
7. Quality issues that should be paid attention to
8. Safety assurance measures
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Project Overview
Project name: ************Project
Construction unit: ************ Co., Ltd.
Supervision unit: ********** Engineering Construction Supervision Company
Construction unit: ************ Co., Ltd.
construction place:************,
The main functions of the residential buildings in this project are residential buildings, supporting public buildings, underground garages, equipment rooms, etc. Floor siege is a whole one-story pure underground garage.
The land area of this project is 24,196.8 square meters, and the total construction area is 189,090.5 square meters, including 160,875.4 square meters above ground, 28,215.1 square meters underground, 27-33 floors above ground, and one underground floor, with a building height of 96.6 m.
The building structure is a cast-in-place reinforced concrete structure system, the tower is a shear wall structure, and the underground garage is a frame structure. The safety level of the building structure is Level 2, the design service life is 50 years, the seismic fortification intensity is 7 degrees, the waterproof level of the basement is Level 1, and the waterproof level of the roof is Level 2.
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Introduction of Community Underground Garage Roof Planting System
Underground garage planting platform positioning
The use of community green to build underground garages is a characteristic of living in the automotive age. The roof of the underground garage is used as a planting and transportation platform to form a new environmental system¡ªa shallow basin ecosystem.
Due to the large area of the underground garage, its use function and the durability of the reinforced concrete structure require strict sealing and waterproofing. The thickness of the upper covering soil layer is often determined by the needs of the plants to be planted, so as to reduce the load of the structure as much as possible. , which results in a shallow basin morphology:
¡ñ Stable impermeable layer, the communication of the general environment is blocked.
¡ñ The roots of deep-rooted plants extend horizontally in the basin.
¡ñ Deep water accumulation and upper drying lead to the simplification of plant species.
Shallow basin morphology cannot meet the ecological requirements of diversified planting
Manual Intervention Measures for Shallow Basin Morphology
Urban residential community green space needs an ecological environment with diverse plant species, and broad-leaved trees have the best environmental cleaning effect. Therefore, community green space needs to be built with broad-leaved trees, shrubs, and perennial herbs. The shallow basin shape obviously cannot meet the above requirements. Therefore, manual intervention measures must be taken - artificial environmental circulation system
The artificial environment circulation system of the shallow basin form is to use special materials to establish a rapid water and air circulation system.
The development of modern synthetic material technology has provided a more convenient construction method for the artificial environment circulation system in the form of a shallow basin. The drainage board made of synthetic material film is used to construct the drainage layer, the polyester non-woven fabric filters the water and soil conservation, and the artificial intervention system More flexible and lighter.
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Design scheme of garage roof drainage protection system
According to the specific conditions of the garage roof, the recommended top-down design of the system is as follows:
1. Green vegetation.
2. Planting soil.
3. 200g/m2 polyester non-woven fabric.
4. 25mm high polyethylene storage and drainage board.
5. Protective layer.
6. Isolation layer
7. Coil waterproof layer.
8. Leveling layer.
9. Find the slope
10. Garage roof reinforced concrete structure.
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Introduction of 25mm high polyethylene storage and drainage board
Related technical parameters
project name | KD-ZS25 | |
1 | type of material | PE/PP |
2 | Plate thickness, mm | 25mm |
3 | Compressive strength, KPa | 450 |
4 | Vertical water flow, cm3/s | 21.5 |
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Installation and construction technology of drainage system
The installation and construction of the 25mm high polyethylene storage and drainage board is directly laid on the completed protective layer as shown in the figure above, and the lap joint method is adopted.
Installation and construction conditions of 25mm high polyethylene storage and drainage board
1. The surface of the base layer should be smooth;
2. The construction of the waterproof protective layer has been completed and accepted.
Construction technology of 25mm high polyethylene storage and drainage board
The installation and construction of the 25mm high polyethylene storage and drainage board shall be laid according to the requirements of the design drawing, and the splicing of the board shall adopt the lap joint method.
1. Process flow
Base level acceptance ¡ú 25mm high polyethylene storage and drainage boards are fastened ¡ú polyester non-woven fabrics are laid ¡ú self-inspection and acceptance ¡ú inspection and acceptance.
2. Operation points and technical requirements
(1) Before the construction of the storage and drainage board, it is necessary to plan the laying direction uniformly.
(2) The drainage board can be laid in a uniform longitudinal or lateral direction.
(3) In this project, the end closure of the drainage board needs to be determined in combination with the exterior decoration of the building, and the closure shown in the figure is a common practice.
3. Backfill method
In order to prevent soil-moving vehicles from damaging the drainage system, backfilling needs to be backfilled from the periphery to the inside. The procedures are as follows:
(1) Polyester non-woven fabrics are laid first when backfilling, and then backfilling soil.
(2) The one-time backfill thickness of the first layer of backfill soil should be greater than 500mm thick, and vehicles can be driven on the backfill soil only after the frog has been compacted.
(3) Then backfill in layers, and the thickness of each backfill can be 300mm thick.
(4) Finally, backfill the artificially prepared planting soil according to the needs, and backfill it naturally without tamping.
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Finished product protection
1. On the finished product that has been laid, measures should be taken to protect it. It is strictly forbidden to carry out construction and transportation on the laid drainage layer, and the construction of the next process should be carried out in time.
2. During the construction of the storage and drainage layer, attention should be paid to the protection of other finished products that have been constructed.
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Project progress control plan
High-quality, efficient and fast construction is the common pursuit of construction companies and owners. After receiving the notice of start-up, our company guarantees to enter the site two days in advance of the designated start-up date to make pre-construction preparations to ensure that the construction starts on time. The specific schedule is as follows: During the construction, our company will coordinate, rationally intersperse, and carefully deploy. Each construction team will cooperate closely, and organize materials and labor into the work surface according to the schedule plan and on-site construction work surface conditions, make full use of the plane, space and time to organize cross-work operations, avoid surprise construction, and ensure the realization of the total construction period. In order to ensure the realization of the construction period target, our company will also be equipped with backup supplementary personnel, who can dispatch and supplement the construction force on site at any time according to the unexpected changes on the site.
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Quality issues that should be noted
1. The buckle of the storage and drainage board should be strictly buckled. Then lay the non-woven fabric.
2. The non-woven fabric must completely cover the storage and drainage board to prevent mud and sand from flowing into the overhead layer of the storage and drainage board.
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security measures
1. Operators should undergo safety technical training and assessment.
2. The materials are stored in the warehouse in charge of the special person. Fireworks are strictly prohibited and there are eye-catching warning signs and fire prevention measures.
3. Construction workers should wear safety helmets, soft-soled shoes, and work clothes. It is strictly forbidden to operate illegally without any protective measures.
4. The power supply for construction must be equipped with leakage protection devices;
5. It is strictly forbidden to work after drinking, and it is strictly forbidden to touch or tamper with any mechanical and electrical equipment that is not of this type of work.
6. Other unmentioned matters shall be implemented in accordance with the corresponding safety technical operation requirements.
