Separated multifunctional fabricated roof structure and construction method thereof
By setting up a mezzanine design of the elevator shaft unidirectional air outlet mechanism and multifunctional structural layer on the roof, the existing roof has poor ventilation and cooling effect and prone to water accumulation and leakage in the heat insulation layer, achieving the balance of multiple functions and maintenance convenience.
Patent Information
- Application Number
- CN202510173212.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-03-28
AI Technical Summary
The roof of the existing building has poor ventilation and cooling effect in hot areas, and the insulation layer is prone to water accumulation and water leakage, which is high in maintenance costs, making it difficult to take into account multiple functions such as structural safety, energy conservation and environmental protection, insulation, ventilation and cooling, waterproofing and protection, roof greening, etc.
The separated multi-functional prefabricated roof structure is adopted. By setting up a one-way air outlet mechanism on the roof, the cool air of the elevator shaft is introduced into the mezzanine, and the air pressure difference is used to achieve ventilation and cooling effect. The mezzanine design between the multi-functional structural layer and the roof avoids heat transfer and achieves heat insulation effect.
It effectively reduces cracks in the roof enclosure structure of the building, avoids water in the area of the enclosure structure, facilitates later maintenance, reduces maintenance frequency, and realizes multiple functions such as energy conservation and environmental protection, insulation, ventilation and cooling, waterproofing and protection, and roof greening.
Smart Images
Figure CN119711690A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of construction, in particular to a separate multifunctional assembled roof structure and a construction method thereof. Background Art
[0002] As an important part of a building, the roof of a building undertakes multiple functions, including structural support and load-bearing, waterproofing and protection, thermal insulation and heat insulation, ventilation and air exchange, environmental protection and sustainability, and diversity of usage functions, etc. These functions are not only related to the practicality and safety of the building, but also affect the beauty and environmental adaptability of the building, so its construction quality needs to be ensured.
[0003] The ventilation and cooling roof in hot areas is a roof with a ventilation layer in the roof structure. The purpose of heat insulation and cooling is achieved by setting the ventilation layer. The height of the ventilation layer is generally between 10 and 30 cm. It is usually an air flow channel formed by a matrix of overhead supporting bricks, small prefabricated thin plates (the size is generally about 0.6m), etc., which are directly supported on the building envelope structure surface. Since the joints of the small prefabricated thin plates are easily cracked to allow water to enter the ventilation layer, and the dense supporting bricks (matching the size of the small prefabricated thin plates) hinder air flow, the ventilation effect is poor, and the ventilation dust on the roof envelope structure cannot be cleaned, it will eventually cause poor roof drainage and leakage, and the maintenance cost is high.
[0004] Commonly used heat insulation and cooling roofs refer to roofs that have taken heat insulation measures to reduce the impact of summer roof heat on indoor spaces. In hot areas, a heat insulation layer is generally required. The heat insulation layer is in close contact with the upper concrete protective layer (which bears the main drainage function of the roof) and the lower waterproof layers without leaving any gaps. The layers are directly supported on the building roof enclosure structure. This type of structure is prone to cracking and water seepage in the concrete protective layer, which causes water accumulation and failure in the heat insulation layer. After the waterproof layer and structure crack, water leakage occurs, and it is difficult to repair and stop the water on the concrete protective layer of the roof.
[0005] The functions of building roofs are multifaceted. It is difficult to meet the requirements of structural safety, energy conservation and environmental protection, thermal insulation, ventilation and cooling, waterproofing, roof greening and aesthetics. The building roof enclosure structure needs to be strictly controlled during the construction process, especially in terms of waterproofing, thermal insulation, cooling, etc. Usually, it is prevented and solved by using high-quality materials and correct construction methods during construction. In fact, building roof leakage will still occur. After the house is put into use for a period of time, it often causes leakage channels and water accumulation due to structural cracks, design defects, improper material selection, construction factors, failure of waterproof layer, cracking of thermal insulation protective layer, water accumulation due to failure of insulation layer, water accumulation due to greening of covering soil, temperature change cracking of various materials, and other complex factors, resulting in common problems of building roof leakage, which are cumbersome to repair and difficult to cure. Summary of the invention
[0006] The purpose of the present invention is to provide a separate multifunctional assembled roof structure and its construction method for house buildings that can meet the structural safety requirements while taking into account energy conservation and environmental protection, thermal insulation, ventilation and cooling, waterproofing and protection, and roof greening, and eliminate the need for a waterproof layer of the roof enclosure structure. It can effectively reduce cracking of the building roof enclosure structure, avoid water accumulation on the enclosure structure, facilitate later maintenance, and reduce the frequency of maintenance.
[0007] The separated multifunctional assembled roof structure of the present invention is realized as follows: The invention comprises a combined structure with heat insulation, ventilation and cooling, and waterproofing functions arranged on a roof with an elevator shaft, wherein the combined structure comprises a building envelope structure layer, short columns, a multifunctional structure layer, a parapet, ventilation windows, a one-way air outlet mechanism for the elevator shaft, and a roof drainage system. There are several short columns and they are arranged on the roof of the building envelope structure corresponding to the top of the house supporting column. The multifunctional structure layer is a concrete layer and is arranged on the short columns, so that a mezzanine is formed between the multifunctional structure layer and the roof. A one-way air outlet mechanism for the elevator shaft for one-way ventilation from the elevator shaft to the mezzanine is arranged on the one-way air outlet of the elevator shaft on the elevator shaft wall corresponding to the mezzanine, so that the elevator shaft is connected with the mezzanine. The ventilation windows are louver ventilation windows and are arranged on the sides of the mezzanine. The parapet is located on the periphery of the multifunctional structure layer. The inlet end of the drainage pipe of the roof drainage system is located above the multifunctional structure layer.
[0008] The technology of the present invention utilizes the cool wind of the elevator shaft, and guides the cool wind of the elevator shaft to the interlayer in one direction through the one-way air outlet mechanism of the elevator shaft. Since the interlayer is located at the top of the building, its air pressure is lower than that of the elevator shaft. By utilizing the air pressure difference, the cool wind of the elevator shaft can be introduced into the interlayer, thereby reducing the temperature in the interlayer. Since there is an interlayer and the interlayer has a cooling function, the heat of the roof cannot be transferred to the room below, achieving the effect of heat insulation, ventilation and cooling. Moreover, as the elevator bridge box rises, the bridge box can also compress the cool air in the elevator shaft and pour it into the interlayer through the one-way air outlet of the elevator shaft to reduce the temperature in the interlayer. The interlayer described above can be entered by maintenance personnel through the maintenance hole to clean ventilation dust, replace possibly damaged insulation boards, repair water leaks in the multifunctional structural layer, and other maintenance activities; The plurality of short columns are used to support the multifunctional structural layer, and the spacing between them is consistent with the building span and depth. The large-span independent columns are arranged to increase the air flow inside the cavity and improve the ventilation effect inside the cavity. The ventilation windows are located around the cavity, preferably blinds, so that high-altitude horizontal natural wind can enter and be discharged in both directions, and the natural wind enters and exits the cavity for ventilation and cooling; The roof drainage system is composed of a drainage vertical pipe, an upper drainage access port and a lower drainage access port. The upper drainage access port is responsible for draining the water from the multifunctional structural layer, and the lower drainage access port is responsible for draining a very small amount of leakage (when it exists) and maintenance and cleaning water.
[0009] Preferably, the short column is in the shape of a prism or a trapezoid.
[0010] Preferably, the multifunctional structural layer is composed of a prefabricated planar composite beam, a beam side insulation board, a concrete composite board, an insulation board located below the concrete composite board and a cast-in-place concrete layer located on the surface layer of the concrete composite board. The prefabricated planar composite beam is frame-shaped and is arranged on a short column, the beam side insulation board is arranged on the inner side surface of the prefabricated planar composite beam, the insulation board is arranged below the concrete composite board, and the cast-in-place concrete layer is arranged on the concrete composite board.
[0011] The insulation boards on the beam sides and below protect the interlayer from external heat radiation; Prefabricated planar composite beams enhance the rigidity of the multifunctional structural layer; The cast-in-place concrete layer of the surface layer makes the upper surface of the multifunctional structural layer smooth and beautiful.
[0012] Preferably, the elevator shaft one-way air outlet mechanism is composed of a door cover, a buffer rubber strip and a cover hinge, and the elevator shaft one-way air outlet is connected to the interlayer on one side and to the elevator shaft on the other side. When the elevator bridge box goes up, the door cover automatically opens to actively send air into the cavity for ventilation and cooling, and when the elevator bridge box goes down, the door cover automatically closes.
[0013] The construction method of the separated multifunctional assembled roof structure of the present invention is implemented as follows, comprising: S1: When the building construction reaches the building enclosure structure, the building enclosure structure shall be constructed according to the normal construction method of prefabricated composite slabs, and the slope of the cast-in-place roof structure shall be set and the longitudinal steel bars of the vertical structure shall be reserved. Before the structural concrete of the building enclosure structure is finally set, the roof surface shall be treated by grouting and calendering to meet the requirements of natural drainage, and acceptance shall be carried out to meet the requirements; S2: After the grouting and calendering surface layer of the building envelope structure roof reaches a certain strength that can continue to be constructed, the short column construction begins. During the construction, the grouting and calendering surface of the roof around the short column needs to be protected by paving until the side formwork of the short column is completely removed. The elevator shaft wall is constructed at the same time, and a one-way air outlet of the elevator shaft is left; S3: Clean the debris on the surface of the building envelope structure and rinse the surface with water; S4: Use a tower crane to hoist the prefabricated planar composite beams with thermal insulation panels one by one, place them on the short columns accordingly, and perform calibration and acceptance until they are qualified; S5: Use a tower crane to hoist the concrete composite slabs with insulation boards one by one, place them on the prefabricated plane composite beams accordingly, and perform calibration and acceptance until they are qualified; S6: According to the design requirements, the concrete composite slabs, floor slab reinforcements and beam reinforcement skeletons that have been hoisted and placed are inspected and accepted until they are qualified; S7: pour the cast-in-place concrete layer and set the slope of the cast-in-place concrete layer. Before the final setting of the cast-in-place concrete layer, the surface of the cast-in-place concrete layer is treated by slurry calendering to meet the requirements of natural drainage, and the acceptance is carried out until it is qualified, and then the structure above the multifunctional structural layer is constructed; S8: Build the building enclosure structure to the masonry around the multifunctional structure layer, install ventilation windows, conduct acceptance inspection until qualified, and construct the indoor and outdoor wall decoration surface layer of the building; S9: Enter from the inspection port to install the elevator shaft one-way air outlet mechanism, install the roof drainage system, test the water and rinse the surface layer of the building envelope structure with water again.
[0014] Due to the use of a large-span (3m~6m) overhead multifunctional structural layer, the building envelope layer can be effectively shaded, making the building envelope layer indoor, thereby avoiding direct erosion of the building envelope layer by the natural environment.
[0015] Since the horizontal spacing between the supporting columns of the multifunctional structural layer and the building envelope structural layer is large, the ventilation inside the cavity is not affected.
[0016] The multifunctional structural layer undertakes the functions of structural support and bearing, waterproofing and protection, thermal insulation and heat preservation, ventilation and air exchange, waterproofing and protection, roof greening, environmental protection and sustainability, diversity of use functions, and aesthetics, and allows a certain degree of leakage in the multifunctional structural layer.
[0017] The building enclosure structure described above mainly undertakes functions such as building enclosure and secondary drainage (clean sewage).
[0018] The wind from the elevator shaft is introduced into the cavity in a unidirectional manner, actively disturbing the air inside the cavity, and working simultaneously with the natural ventilation entering through the ventilation windows (blinds), ensuring continuous ventilation of the cavity, cooling down the temperature, and evaporating a small amount of water that may have leaked.
[0019] When the elevator bridge box goes up, the door cover automatically opens to actively supply air into the cavity, thereby reducing the air pressure resistance inside the elevator shaft, saving electricity costs for daily elevator operation, and being energy-saving and environmentally friendly.
[0020] The structural support and load-bearing mentioned above means that the roof is an important component of the building's load-bearing capacity, and it must have sufficient load-bearing capacity to withstand its own weight as well as the effects of external loads such as wind, snow pressure, and rain.
[0021] The waterproof and protection mentioned above refers to the need to prevent rainwater, snow water and other moisture from entering the building and maintain a dry environment indoors. This involves the selection of waterproof materials and the application of construction technology.
[0022] The thermal insulation and heat preservation mentioned above refer to the thermal insulation and heat insulation performance of the roof. This case adopts the method of combining sunshade and heat insulation materials to reduce heat loss or maintain a suitable indoor temperature and improve energy utilization efficiency.
[0023] The ventilation and air exchange mentioned above refer to that some roofs allow air to flow, such as ventilated roofs, which help to improve indoor air quality and regulate indoor humidity.
[0024] The environmental protection and sustainability mentioned above means that modern roof design pays more and more attention to environmental protection and sustainability. For example, green roofs (planted roofs) can absorb rainwater and reduce the urban heat island effect.
[0025] The diversity of usage functions refers to that different types of buildings may require roofs with different functions, such as a flat roof that can be used as a sun drying area, a leisure space, etc.
[0026] Compared with the existing technology, the present invention provides a kind of house building which can not only meet the structural safety requirements, but also take into account energy saving and environmental protection, thermal insulation, ventilation and cooling, waterproofing and protection, and roof greening, and eliminates the need for a waterproof layer of the roof enclosure structure. It can effectively reduce cracking of the building roof enclosure structure, avoid water accumulation on the enclosure structure, facilitate later maintenance, and reduce the frequency of repairs. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a structural schematic diagram of the separated multifunctional assembled roof structure of the present invention; Figure 2 It is a structural schematic diagram of the roof structure during the process of pouring short columns; Figure 3 The schematic diagram of the structure of the roof structure during the process of installing the prefabricated plane composite beams; Figure 4 The schematic diagram of the structure of the roof structure during the process of installing the concrete composite slab; Figure 5 A schematic diagram of the structure of the roof structure during the process of pouring the cast-in-place concrete layer of the surface layer; Figure 6 A schematic diagram of the structure of the roof structure for constructing the structure above the multifunctional structural layer; Figure 7 It is a structural schematic diagram of a one-way air outlet mechanism in an elevator shaft; Figure 8 A schematic diagram of the elevator shaft structure for installing a one-way air outlet mechanism for the elevator shaft; Fig. 9It is a structural schematic diagram of a mouth-shaped prefabricated plane composite beam and a corresponding concrete composite slab; Fig.10 It is a structural schematic diagram of a field-shaped prefabricated plane composite beam and a corresponding concrete composite slab; Fig.11 This is a structural schematic diagram of the day-shaped prefabricated flat composite beam and the corresponding concrete composite slab.
[0028] Description of Figure Numbers: A-combined structure; 1-elevator shaft; 101-wall; 102-one-way air outlet of elevator shaft; 2-roof; 3-building enclosure structure; 4-short column; 5-multifunctional structural layer; 501-prefabricated plane composite beam; 502-beam side insulation board; 503-concrete composite board; 504-insulation board; 505-cast-in-place concrete layer; 6-parapet; 7-ventilation window; 8-one-way air outlet mechanism of elevator shaft; 801-door cover plate; 802-buffer rubber strip; 803-cover plate movable hinge; 9-roof drainage system; 10-house support column; 11-mezzanine; 12-stairwell. DETAILED DESCRIPTION
[0029] The separated multifunctional assembled roof structure and the construction method thereof of the present invention are now described in further detail in conjunction with the accompanying drawings and embodiments: As shown in the figure, the separated multifunctional assembled roof structure of the present invention includes a combined structure A with heat insulation, ventilation and cooling, and waterproof functions arranged on a roof 2 with an elevator shaft 1. The combined structure A includes a building enclosure structure 3, a short column 4, a multifunctional structural layer 5, a parapet 6, a ventilation window 7, a one-way air outlet mechanism 8 for the elevator shaft, and a roof drainage system 9. There are several short columns 4 and they are arranged on the roof 2 of the building enclosure structure 3 corresponding to the top of the house support column 10. The multifunctional structural layer 5 is a concrete layer and is arranged on On the short column 4, a mezzanine 11 is formed between the multifunctional structural layer 5 and the roof 2. A one-way air outlet mechanism 8 for one-way ventilation from the elevator shaft 1 to the mezzanine 11 is arranged on a one-way air outlet 102 of the elevator shaft 1 wall 101 corresponding to the mezzanine 11, so that the elevator shaft 1 is connected with the mezzanine 11. The ventilation window 7 is a louver ventilation window. The ventilation window 7 is arranged on the sides of the mezzanine 11. The parapet 6 is located on the periphery of the multifunctional structural layer 5. The drainage pipe inlet end of the roof drainage system 9 is located above the multifunctional structural layer 5.
[0030] Preferably, the short column 4 is in a prism shape or a trapezoidal shape.
[0031] Preferably, the multifunctional structural layer 5 is composed of a prefabricated plane composite beam 501, a beam side insulation board 502, a concrete composite board 503, an insulation board 504 located below the concrete composite board 503 and a cast-in-place concrete layer 505 located on the surface layer of the concrete composite board 503. The prefabricated plane composite beam 501 is frame-shaped and is arranged on the short column 4, the beam side insulation board 502 is arranged on the inner side of the prefabricated plane composite beam 501, the insulation board 504 is arranged below the concrete composite board 503, and the cast-in-place concrete layer 505 is arranged on the concrete composite board 503.
[0032] like Fig. 9 As shown in FIG. 11 , the prefabricated plane composite beam 501 includes a hole-shaped prefabricated plane composite beam, a sun-shaped prefabricated plane composite beam, and a field-shaped prefabricated plane composite beam. The prefabricated plane composite beam in the centering form is convenient for prefabrication and installation, and can adapt to buildings of various structures.
[0033] Preferably, if Figure 7 , 8 As shown, the elevator shaft one-way air outlet mechanism 8 is composed of a door cover plate 801, a buffer rubber strip 802 and a cover plate movable hinge 803. The cover plate movable hinge 803 is fixed on the upper edge of the elevator shaft one-way air outlet 102 of the elevator shaft 1. The elevator shaft one-way air outlet 102 is connected to the interlayer 11 on one side and to the elevator shaft 1 on the other side.
[0034] like Figure 1 As shown in FIG. 6 , the construction method of the separated multifunctional assembled roof structure of the present invention is implemented as follows, comprising: S1: When the building construction reaches the building enclosure structure 3, the building enclosure structure 3 is constructed according to the normal construction method of the assembled composite slab, and the slope setting of the cast-in-place structure of the roof 2 is carried out and the longitudinal steel bars of the vertical structure are reserved. Before the structural concrete of the building enclosure structure 3 is finally set, the roof 2 is treated with the grouting and calendering method to meet the requirements of natural drainage, and the acceptance is carried out to be qualified; S2: After the grouting and calendering surface layer of the roof 2 of the building enclosure structure 3 reaches a certain strength for continued construction, the construction of the short column 4 begins. During the construction, the grouting and calendering surface of the roof 2 around the short column 4 needs to be protected by paving until the side formwork of the short column 4 is completely removed. At the same time, the shaft wall of the elevator shaft 1 is constructed, and a one-way air outlet 102 of the elevator shaft 1 is left; S3: clean the debris on the roof 2 of the building enclosure structure 3, and rinse the surface of the roof 2 with water; S4: Use a tower crane to hoist the prefabricated planar composite beams 501 with beam side insulation panels 502 one by one, place them on the short columns 4 accordingly, and perform calibration and acceptance until they are qualified; S5: Use a tower crane to hoist the concrete composite panels 503 with the heat insulation panels 504 one by one, place them on the prefabricated plane composite beams 501 accordingly, and perform calibration and acceptance until they are qualified; S6: According to the design requirements, the upper plate of the concrete composite slab 503 that has been hoisted and placed, the floor slab reinforcement and the beam reinforcement skeleton are tied, and acceptance is carried out to ensure that they are qualified; S7: pouring the cast-in-place concrete layer 505, and setting the slope of the cast-in-place concrete layer 505. Before the cast-in-place concrete layer 505 is finally set, the surface of the cast-in-place concrete layer 505 is treated by slurry calendering to meet the requirements of natural drainage, and acceptance is carried out to be qualified, and then the structure above the multifunctional structural layer 5 (such as the stairwell 12) is constructed; S8: Build the masonry around the building enclosure structure 3 to the multifunctional structure layer 5, and install the ventilation windows 7, conduct acceptance inspection until they are qualified, and construct the indoor and outdoor wall decoration surface layer of the building; S9: Enter from the inspection port to install the elevator shaft one-way air outlet mechanism 8, install the roof drainage system 9, test the water and rinse the surface layer of the building envelope structure with water again.
Claims
1. A split multifunctional assembled roof structure, comprising a structure with heat insulation, ventilation and cooling, and waterproof functions arranged on a roof with an elevator shaft, characterized in that: The combined structure includes a building envelope structure layer, short columns, a multifunctional structure layer, a parapet, ventilation windows, an elevator shaft one-way air outlet mechanism, and a roof drainage system. There are several short columns and they are arranged on the roof of the building envelope structure corresponding to the top of the house supporting column. The multifunctional structure layer is a concrete layer and is arranged on the short columns, so that a mezzanine is formed between the multifunctional structure layer and the roof. The elevator shaft one-way air outlet mechanism for one-way ventilation from the elevator shaft to the mezzanine is arranged on the elevator shaft one-way air outlet of the elevator shaft wall corresponding to the mezzanine, so that the elevator shaft and the mezzanine are connected. The ventilation windows are louver ventilation windows, and the ventilation windows are arranged on the sides of the mezzanine. The parapet is located on the periphery of the multifunctional structure layer, and the drainage pipe inlet end of the roof drainage system is located above the multifunctional structure layer.
2. The separated multifunctional assembled roof structure according to claim 1 is characterized in that: The multifunctional structural layer is composed of a prefabricated plane composite beam, a beam side insulation board, a concrete composite board, an insulation board located below the concrete composite board, and a cast-in-place concrete layer located on the surface layer of the concrete composite board. The prefabricated plane composite beam is frame-shaped and is arranged on a short column, the beam side insulation board is arranged on the inner side of the prefabricated plane composite beam, the insulation board is arranged below the concrete composite board, and the cast-in-place concrete layer is arranged on the concrete composite board.
3. The detachable multifunctional assembled roof structure according to claim 1 or 2, characterized in that: The elevator shaft one-way air outlet mechanism is composed of a door cover, a buffer rubber strip and a cover movable hinge. One side of the elevator shaft one-way air outlet is connected to the interlayer, and the other side is connected to the elevator shaft.
4. The detachable multifunctional assembled roof structure according to claim 1 or 2, characterized in that: The short columns are prism-shaped or trapezoidal.
5. The separated multifunctional assembled roof structure according to claim 3 is characterized in that: The short columns are prism-shaped or trapezoidal.
6. A method for constructing a separate multifunctional assembled roof structure, characterized in that: include: S1: When the building construction reaches the building enclosure structure, the building enclosure structure shall be constructed according to the normal construction method of prefabricated composite slabs, and the slope of the cast-in-place roof structure shall be set and the longitudinal steel bars of the vertical structure shall be reserved. Before the structural concrete of the building enclosure structure is finally set, the roof surface shall be treated by grouting and calendering to meet the requirements of natural drainage, and acceptance shall be carried out to meet the requirements; S2: After the grouting and calendering surface layer of the building envelope structure roof reaches a certain strength that can continue to be constructed, the short column construction begins. During the construction, the grouting and calendering surface of the roof around the short column needs to be protected by paving until the side formwork of the short column is completely removed. The elevator shaft wall is constructed at the same time, and a one-way air outlet of the elevator shaft is left; S3: Clean the debris on the surface of the building envelope structure and rinse the surface with water; S4: Use a tower crane to hoist the prefabricated planar composite beams with thermal insulation panels one by one, place them on the short columns accordingly, and perform calibration and acceptance until they are qualified; S5: Use a tower crane to hoist the concrete composite slabs with insulation boards one by one, place them on the prefabricated plane composite beams accordingly, and perform calibration and acceptance until they are qualified; S6: According to the design requirements, the concrete composite slabs, floor slab reinforcements and beam reinforcement skeletons that have been hoisted and placed are inspected and accepted until they are qualified; S7: pour the cast-in-place concrete layer and set the slope of the cast-in-place concrete layer. Before the final setting of the cast-in-place concrete layer, the surface of the cast-in-place concrete layer is treated by slurry calendering to meet the requirements of natural drainage, and the acceptance is carried out until it is qualified, and then the structure above the multifunctional structural layer is constructed; S8: Build the building enclosure structure to the masonry around the multifunctional structure layer, install ventilation windows, conduct acceptance inspection until qualified, and construct the indoor and outdoor wall decoration surface layer of the building; S9: Enter from the inspection port to install the elevator shaft one-way air outlet mechanism, install the roof drainage system, test the water and rinse the surface layer of the building envelope structure with water again.