Method and structure for pre-closing post-cast strip of basement roof

Abstract

The invention discloses a basement roof post-cast strip pre-sealing method and structure, and relates to the technical field of building construction.The method comprises the steps that a supporting system is constructed, a scaffold is built firstly, an adjustable base, a vertical rod, a horizontal rod and an adjustable support are installed, then a working platform is installed, and a first batten, a second batten and a multi-layer plate are laid on the scaffold; a post-cast strip pre-sealing system is constructed, specifically, firstly, a reverse ridge structure is constructed, concrete reverse ridges are manufactured on the two sides of the post-cast strip, water stop strips are arranged, waterproof treatment is conducted, then prefabricated parts are installed, prefabricated concrete plates are installed, and mortar bonding and slope making treatment are conducted; and building system construction, namely laying a composite coating which comprises a waterproof layer, an isolating layer, a protective layer, a hydrophobic layer and a surface layer. Advanced water stopping and advanced backfilling are achieved by closing the settlement post-cast strip of the basement roof in advance, so that follow-up construction such as total leveling earthwork backfilling and landscape architecture can be alternately carried out in advance, the waiting time between procedures is shortened, and the construction progress is accelerated.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly to a method and structure for pre-closing the post-cast strip of a basement top slab. Background Art

[0002] In recent years, with the rapid development of the construction industry, fine management has become increasingly important in project construction. During the project implementation process, cost control is crucial. Many construction units usually adopt the strategy of shortening the construction period to reduce the project operation cost. However, building materials have specific performance requirements. For example, concrete needs a certain age to reach the design strength, and the basement top slab also needs to go through a settlement stabilization process before bearing the final load. These material characteristics determine that some construction links, such as the construction of the post-cast strip and earthwork backfilling, must be carried out after the structure has been completed for some time. If the construction period is arranged strictly according to the material performance requirements, it will lead to an extension of the entire project construction period, thus increasing the enterprise operation cost. Therefore, how to shorten the construction period and reduce the cost while ensuring the project quality has become an urgent problem to be solved in the construction industry.

[0003] In the traditional construction method of the post-cast strip of the basement top slab, the post-cast strip can only be closed after the main building's main structure is capped and the settlement is stable. This settlement stabilization process usually takes more than 60 days. This construction method has obvious drawbacks: First, turnover materials such as formwork and supports need to occupy the construction site for a long time, reducing the turnover efficiency of the materials and directly leading to an increase in construction costs; Second, the lag in the construction of the post-cast strip seriously affects the waterproof construction progress of the basement and increases the risk of basement leakage; In addition, it also restricts the development of subsequent work such as general flat earthwork backfilling and site planning, making it difficult to optimize the entire construction process. To solve the above problems, the construction industry urgently needs a new technology that can achieve the early closure of the post-cast strip of the basement top slab on the premise of ensuring the project quality, so as to shorten the construction period, optimize resource allocation, and improve construction efficiency. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is that the traditional construction period of the post-cast strip is long, the cost is high, and it affects subsequent construction.

[0005] The above technical problem is solved by the following technical solutions:

[0006] The present invention provides a method for pre-closing the post-cast strip of a basement top slab, which includes the construction of a support system, the construction of a pre-closing system for the post-cast strip, and the construction of a building system.

[0007] In a preferred embodiment of the method for pre-sealing the post-cast strip of the basement roof of the present invention: the support system construction includes building a scaffold and installing a working platform, wherein the building of the scaffold includes installing an adjustable base, vertical poles, horizontal poles and adjustable supports, and the installing of the working platform includes laying a first wooden beam, a second wooden beam and a multi-layer board on the scaffold;

[0008] The construction of the post-cast strip pre-sealing system includes constructing a counter-ridge structure and installing prefabricated components. The construction of the counter-ridge structure includes making concrete counter-ridges on both sides of the post-cast strip, setting water stop strips and performing waterproofing treatment. The installation of prefabricated components includes installing prefabricated concrete slabs and performing mortar bonding and slope adjustment treatment.

[0009] The construction of the building system includes laying a composite covering, which includes applying a paint waterproof layer, pasting a roll waterproof layer, laying an isolation layer, laying a protective layer, setting a hydrophobic layer and laying a surface layer.

[0010] In a preferred embodiment of the method for pre-sealing the post-cast strip of the basement top slab of the present invention: the scaffolding construction includes installing the adjustable base according to the span, installing the vertical poles on the adjustable base, arranging the horizontal poles on the vertical poles according to the step distance and installing the adjustable supports.

[0011] In a preferred embodiment of the method for pre-sealing the post-cast strip of the basement top slab of the present invention: the installation work platform includes placing the first wooden beam horizontally on the adjustable support, placing the second wooden beam vertically on the first wooden beam, and nailing the multi-layer board on the second wooden beam.

[0012] In a preferred embodiment of the method for pre-sealing the post-cast strip of the basement top plate of the present invention: the construction of the counter-ridge structure includes pouring plain concrete counter-ridges on both sides of the post-cast strip, setting water-expanding water stop strips in the grooves of the plain concrete counter-ridges, and performing waterproof mortar slope leveling treatment on both sides of the plain concrete counter-ridges.

[0013] In a preferred embodiment of the method for pre-sealing the post-cast strip of the basement top slab of the present invention: the installation of prefabricated components includes installing a prefabricated concrete slab on the plain concrete counter-ridge and bonding the prefabricated concrete slab and the plain concrete counter-ridge with cement mortar at the intersection.

[0014] In a preferred embodiment of the method for pre-sealing the post-cast strip of the basement roof according to the present invention: the laying of the composite covering includes, in sequence, applying a paint waterproof layer on the precast concrete slab, pasting a roll waterproof layer, laying an isolation layer, laying a protective layer, setting a hydrophobic layer, and laying a surface layer.

[0015] In a preferred embodiment of the method for pre-closing the post-cast strip of the basement top slab in the present invention: the surface layer is a planting layer or a paving layer. The planting layer is used for planting flowers, plants, and shrubs, and the paving layer is used for paving squares and roads.

[0016] In a preferred embodiment of the method for pre-closing the post-cast strip of the basement top slab in the present invention: further included is

[0017] General site earth backfilling. After the construction of the building system is completed, earth backfilling operations are carried out in the general site area.

[0018] Landscape construction. After the general site earth backfilling, planting soil is laid, greenery is planted, and garden paths are laid.

[0019] Post-cast strip pouring. After the settlement of the basement top slab reaches the design required age, concrete is poured in the reserved post-cast strip area to complete the final closure of the post-cast strip.

[0020] The present invention also proposes a structure for pre-closing the post-cast strip of the basement top slab, which includes a support system, a pre-closing system for the post-cast strip, and a building system.

[0021] In a preferred embodiment of the structure for pre-closing the post-cast strip of the basement top slab in the present invention: the support system includes a scaffold and a working platform, and the working platform is arranged on the top of the scaffold.

[0022] The pre-closing system for the post-cast strip includes a curb structure and precast components. The curb structure is arranged on the basement top slab structure, and the precast components are installed on the curb structure.

[0023] The building system includes a composite cladding, which is arranged above the pre-closing system for the post-cast strip.

[0024] In a preferred embodiment of the structure for pre-closing the post-cast strip of the basement top slab in the present invention: the scaffold includes an adjustable base, vertical poles, horizontal bars, and adjustable supports. The vertical poles are installed on the adjustable base, and the horizontal bars and adjustable supports are installed on the vertical poles.

[0025] The working platform includes a first wooden square, a second wooden square, and a multi-layer board arranged on the adjustable supports. The first wooden square, the second wooden square, and the multi-layer board are arranged in sequence from bottom to top.

[0026] The curb structure includes a plain concrete curb arranged on the basement top slab structure and a water-swelling waterstop strip. The water-swelling waterstop strip is arranged in the groove of the plain concrete curb.

[0027] The precast components include a precast concrete slab installed on the curb structure. The precast concrete slab is bonded to the plain concrete curb with cement mortar.

[0028] The composite cladding layer includes a paint waterproof layer, a coiled material waterproof layer, an isolation layer, a protection layer, a hydrophobic layer, and a surface layer that are sequentially arranged on the precast concrete slab.

[0029] The beneficial effects of the present invention are as follows: By pre-closing the settlement post-cast strip of the basement top slab, advanced water stop and early backfilling are achieved, so that subsequent construction such as general flat earth backfilling and garden landscape can be carried out in advance in an interleaved manner, reducing the waiting time between processes and accelerating the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present invention and do not limit the present invention.

[0031] Figure 1 Shows a schematic diagram of the method for pre-closing the post-cast strip of the basement top slab;

[0032] Figure 2 Shows an overall schematic diagram of the structure of the pre-closed post-cast strip of the basement top slab;

[0033] Figure 3 Shows the layout diagram of the basement top slab structure, plain concrete anti-camber, waterstop steel plate, and water-swelling waterstop strip;

[0034] Figure 4 Shows the positioning diagram between the precast concrete slab and the exhaust hole;

[0035] Figure 5 Shows the positioning diagram between the precast concrete slab and the grouting hole;

[0036] Figure 6 Shows an overall sectional view of the structure of the pre-closed post-cast strip of the basement top slab;

[0037] Figure 7 Shows the schematic diagram of the precast concrete slab and the exhaust hole, the rabbets on both sides of the precast concrete slab, and the bottom of the exhaust hole and the precast concrete slab. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with the specific embodiments and the drawings.

[0039] The terms used in the present invention are those general terms that are currently widely used in the art in consideration of the functions of the present invention. However, these terms may vary according to the intentions of those of ordinary skill in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but based on the meanings of the terms and the overall description of the present invention.

[0040] Example 1, referring to Figure 1 , this example provides a method for pre-closing the post-cast strip of the basement roof slab, including the construction of the support system, the construction of the post-cast strip pre-closure system, and the construction of the building system.

[0041] Specifically, the construction of the support system includes erecting the scaffold 1 and installing the working platform 2.

[0042] Erecting the scaffold 1 includes installing the adjustable base 11, the vertical pole 12, the horizontal pole 13, and the adjustable support 14. The scaffold provides a stable and safe support system for subsequent construction.

[0043] Installing the working platform 2 includes laying the first wooden square 21, the second wooden square 22, and the multi-layer board 23 on the scaffold; the working platform is a platform directly used for construction operations.

[0044] In one embodiment, the first wooden square 21 is a 100*100 wooden square, the second wooden square 22 is a 50*100 wooden square, and the multi-layer board 23 is an 18 mm thick multi-layer board.

[0045] The construction of the post-cast strip pre-closure system includes constructing the anti-camber structure 3 and installing the precast components 4.

[0046] Constructing the anti-camber structure 3 includes making the plain concrete anti-camber 31 on both sides of the post-cast strip, setting the water-swelling waterstop strip 32, and finding the slope with waterproof mortar 33; the anti-camber structure is a concrete structure located on both sides of the post-cast strip, providing support for the precast components to ensure that the precast components can be stably installed in the post-cast strip area, and also having a waterproof function after setting the water-swelling waterstop strip 32.

[0047] Installing the precast components 4 includes installing the precast concrete slab 41 and bonding it with the cement mortar 42; the main function of the precast components is to close the post-cast strip area, forming a temporary top surface to facilitate subsequent earth backfilling and ground construction. There are steel pipe exhaust holes 411 and steel pipe blanking holes 413 on the precast concrete slab 41 to facilitate subsequent concrete pouring.

[0048] Construction of the building system, including laying the composite cladding 5, and laying the composite cladding 5 includes applying a coating waterproof layer 51, pasting a roll waterproof layer 52, laying an isolation layer 53, laying a protective layer 54, setting a hydrophobic layer 55 and a surface layer 56.

[0049] The surface layer 56 is the final ground structure. Laying the composite cladding 5 is to form a complete ground structure and provide waterproof and isolation protection for the composite cladding 5, etc.

[0050] [[ID=⑥]]Example 2, refer to [[ID=⑦]] Figure 1 [[ID=⑧]], this embodiment provides a method for pre-closing the post-cast strip of the basement roof slab, including the construction of the support system, the construction of the post-cast strip pre-closing system and the construction of the building system. [[ID=⑨]] [[ID=⑩]]

[0051] [[ID=⑪]]Specifically, the construction of the support system includes erecting the scaffolding 1 and installing the working platform 2. [[ID=⑫]] [[ID=⑬]]

[0052] [[ID=⑭]]Erecting the scaffolding 1 includes installing adjustable bases 11, vertical poles 12, horizontal bars 13 and adjustable supports 14. The scaffolding provides a stable and safe support system for subsequent construction. [[ID=⑮]] [[ID=⑯]]

[0053] [[ID=⑰]]Installing the working platform 2 includes laying the first wooden square 21, the second wooden square 22 and the multi-layer board 23 on the scaffolding; the working platform is a platform directly used for construction operations. [[ID=⑱]] [[ID=⑲]]

[0054] [[ID=⑳]]The construction of the post-cast strip pre-closing system includes constructing the anti-camber structure 3 and installing the precast components 4. [[ID=㉑]] [[ID=㉒]]

[0055] [[ID=㉓]]Constructing the anti-camber structure 3 includes making plain concrete anti-cambers 31 on both sides of the post-cast strip, setting water-swelling waterstop strips 32, and leveling with waterproof mortar 33; the anti-camber structure is a concrete structure located on both sides of the post-cast strip, providing support for the precast components to ensure that the precast components can be stably installed in the post-cast strip area, and also having a waterproof function after setting the water-swelling waterstop strip 32. [[ID=㉔]] [[ID=㉕]]

[0056] [[ID=㉖]]Installing the precast components 4 includes installing the precast concrete slab 41 and bonding it with the cement mortar 42; the main function of the precast components is to close the post-cast strip area and form a temporary top surface to facilitate subsequent earth backfilling and ground construction. There are steel pipe exhaust holes 411 and steel pipe blanking holes 413 on the precast concrete slab 41 to facilitate subsequent concrete pouring. [[ID=㉗]] [[ID=㉘]]

[0057] [[ID=㉙]]Construction of the building system, including laying the composite cladding 5, and laying the composite cladding 5 includes applying a coating waterproof layer 51, pasting a roll waterproof layer 52, laying an isolation layer 53, laying a protective layer 54, setting a hydrophobic layer 55 and a surface layer 56. [[ID=㉚]] [[ID=㉛]]

[0058] [[ID=㉜]]The surface layer 56 is the final ground structure. Laying the composite cladding 5 is to form a complete ground structure and provide waterproof and isolation protection for the composite cladding 5, etc. [[ID=㉝]]

[0059] Specifically, the scaffolding 1 is constructed by installing an adjustable base 11 according to the span, installing vertical poles 12 on the adjustable base 11, setting horizontal poles 13 on the vertical poles 12 according to the step spacing, and installing adjustable supports 14. This is used to build a working platform. The span can be 1200 mm, and the step spacing can be 1500 mm.

[0060] Specifically, installing the work platform 2 involves horizontally placing a first wooden beam 21 on the adjustable support 14, vertically placing a second wooden beam 22 on the first wooden beam 21, and nailing a multi-layer board 23 onto the second wooden beam 22. This provides an operating surface for the subsequent construction of the post-cast strip pre-sealing system and the building system on the basement roof.

[0061] In one embodiment, the first wooden square 21 is a 100*100 wooden square, the second wooden square 22 is a 50*100 wooden square, and the multilayer board 23 is an 18 mm thick multilayer board.

[0062] Specifically, constructing the anti-ridge structure 3 includes pouring plain concrete anti-ridges 31 on both sides of the post-cast strip, setting water-expanding water stop strips 32 in the groove of the plain concrete anti-ridge 31, and performing waterproof mortar slope leveling 33 on both sides of the plain concrete anti-ridge 31.

[0063] Plain concrete anti-ridges 31 are poured on both sides of the post-cast strip to provide a supporting base for the installation of prefabricated components. Water-swelling waterstop strips 32 are set to improve the waterproof performance of the post-cast strip and prevent water penetration. Waterproof mortar slope adjustment 33 is performed on both sides of the plain concrete anti-ridge 31 to prevent water accumulation and ensure smooth drainage.

[0064] Specifically, installing the prefabricated component 4 includes installing the prefabricated concrete slab 41 on the plain concrete counter-ridge 31 , and bonding the prefabricated concrete slab 41 and the plain concrete counter-ridge 31 with cement mortar 42 at the junction.

[0065] The precast concrete slab 41 is installed on the previously constructed plain concrete counter-embankment 31. This serves to seal the post-casting zone and provide a temporary roof for subsequent construction. Cement mortar 42 is used to secure the connection between the precast concrete slab 41 and the plain concrete counter-embankment 31. This completes the installation of the precast components 4, setting the stage for subsequent construction of the building system.

[0066] Specifically, laying the composite covering 5 includes, in sequence, applying a paint waterproof layer 51 on the precast concrete slab 41, pasting a roll waterproof layer 52, laying an isolation layer 53, laying a protective layer 54, setting a hydrophobic layer 55, and laying a surface layer 56, so as to form the final ground structure, a complete ground structure that meets the use requirements and has protective functions such as waterproofing and isolation.

[0067] Specifically, the surface layer 56 is a planting layer or a paving layer. The planting layer is used for planting flowers, plants, and shrubs, and the paving layer is used for paving squares, roads, etc. It can meet different usage requirements. The planting layer is used for planting plants such as flowers, plants, and shrubs, mainly for garden landscape areas, and can play a role in greening and beautifying the environment. The paving layer is used for paving areas such as squares, roads, and benches, mainly for providing pedestrian or vehicle traffic functions and rest functions.

[0068] Specifically, it also includes general site earth backfilling. After the construction of the building system 5 is completed, the earth backfilling operation of the general plane area is carried out; it creates site conditions for subsequent garden landscape construction and is also conducive to protecting the completed basement roof structure.

[0069] Garden landscape construction. After the general site earth backfilling, planting soil is laid, greenery is planted, and garden paths are laid; the landscape effect in the design is achieved, and the overall quality of the building is improved.

[0070] Post-cast strip pouring. After the settlement of the basement roof reaches the design required age, concrete is poured in the reserved post-cast strip area to complete the final closure of the post-cast strip and complete the final structure of the entire basement roof, ensuring its integrity and stability.

[0071] Example 3, referring to Figure 1 , this embodiment provides a pre-closure structure for the post-cast strip of the basement roof, including a support system, a pre-closure system for the post-cast strip, and a building system.

[0072] Specifically, the support system includes a scaffold 1 and a working platform 2, and the working platform 2 is arranged on the top of the scaffold 1; it provides a stable and safe support platform for the construction of the pre-closure system for the post-cast strip and the building system. It can bear construction loads, including the weights of construction workers, materials, and equipment.

[0073] The pre-closure system for the post-cast strip includes a counter-camber structure 3 and a precast member 4. The counter-camber structure 3 is arranged on the basement roof structure, and the precast member 4 is installed on the counter-camber structure 3; it is used to close the post-cast strip area of the basement roof, creates conditions for subsequent earth backfilling and ground construction, and has load-bearing capacity and waterproof performance.

[0074] The building system includes a composite cladding 5, which is arranged on top of the pre-closure system for the post-cast strip 3, 4. On the basis of the pre-closure system for the post-cast strip, the final ground structure is formed to meet the requirements of usage functions, such as passage, landscape, rest, etc.

[0075] Specifically, the scaffold 1 includes an adjustable base 11, vertical poles 12, horizontal bars 13, and adjustable supports 14. The vertical poles 12 are installed on the adjustable base 11, and the horizontal bars 13 and adjustable supports 14 are installed on the vertical poles 12;

[0076] The scaffolding 1 adopts a socketed scaffolding, which has strong bearing capacity, good stability, flexible erection, high construction efficiency, and is convenient for erecting a stable and reliable support system.

[0077] The working platform 2 includes a first wooden square 21, a second wooden square 22 and a multi-layer board 23 arranged on the adjustable support 14. The first wooden square 21, the second wooden square 22 and the multi-layer board 23 are arranged in sequence from bottom to top; the first wooden square 21 has a specification of 100*100 wooden square, the second wooden square 22 has a specification of 50*100mm wooden square, and the multi-layer board 23 has a specification of 18mm.

[0078] The inverted beam structure 3 includes a plain concrete inverted beam 31 arranged on the basement roof structure and a water-swelling waterstop strip 32. The water-swelling waterstop strip 32 is arranged in the groove of the plain concrete inverted beam 31; the plain concrete inverted beam 31 adopts a rabbeted type with a specification of 100*100mm special-shaped.

[0079] For the basement roof structure, first tie the reserved steel bars, then weld with the waterstop steel plate, and finally pour the concrete. The specification of the waterstop steel plate is 300*3mm, and the specification of the water-swelling waterstop strip 32 is 20*20mm.

[0080] The precast member 4 includes a precast concrete slab 41 installed on the inverted beam structure 3. The precast concrete slab 41 is bonded to the plain concrete inverted beam 31 through the cement mortar 42;

[0081] The precast concrete slab 41 has a specification of 1100*1000*70mm, is internally provided with internal steel bars 414, and the internal steel bars 414 are double-layer and bidirectional HRB400 with a diameter of 12@150. The precast concrete slab 41 also includes a steel pipe exhaust hole 411, a wide waterstop wing ring 412, and a steel pipe blanking hole 413. The specification of the wide waterstop wing ring 412 is 30mm*1mm.

[0082] The composite cladding 5 includes a paint waterproof layer 51, a coil waterproof layer 52, an isolation layer 53, a protective layer 54, a hydrophobic layer 55 and a surface layer 56 arranged in sequence on the precast concrete slab 41.

[0083] The paint waterproof layer 51 is a 2mm thick non-curing rubber asphalt waterproof coating.

[0084] The coil waterproof layer 52 is a 4mm thick elastomeric SBS modified asphalt root-resistant waterproof coil, type II PY class.

[0085] The isolation layer 53 is a dry-laid 200g / ㎡ polyester non-woven fabric.

[0086] The protective layer 54 is a C30 fine aggregate concrete with a minimum thickness of 70mm, internally mixed with crack-resistant fibers and cement-based penetrating crystalline waterproofing agent, internally provided with a Φ8@150 bidirectional steel bar mesh, the dividing joint is not more than 4m, the joint width is 15mm, and the joint is embedded with a root-resistant polyurethane sealant.

[0087] The hydrophobic layer 55 is composed of a 200 g / ㎡ polyester non-woven fabric + a 20 mm high concave-convex plastic hydrophobic board from top to bottom.

[0088] The surface layer 56 is a planting layer or a paving layer. The planting layer is used for planting flowers, plants and shrubs, and the paving layer is used for paving squares, roads, etc. Different usage requirements can be met. The planting layer is used for planting plants such as flowers, plants and shrubs, mainly for the garden landscape area, which can play a role in greening and beautifying the environment. The paving layer is used for paving areas such as squares, roads, benches, etc., mainly for providing pedestrian or vehicle traffic functions and rest functions.

[0089] Finally, it should be pointed out that the methods and devices described in detail above are only examples, and those skilled in the art can modify these examples in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A method for pre-closing the post-cast strip of the basement roof slab, characterized in that: include, The support system construction includes building a scaffold and installing a working platform, wherein the building of the scaffold includes installing an adjustable base, vertical poles, horizontal poles and adjustable supports, and the installing of the working platform includes laying a first wooden beam, a second wooden beam and multi-layer boards on the scaffold; The construction of the post-cast strip pre-sealing system includes constructing a counter-ridge structure and installing prefabricated components. The construction of the counter-ridge structure includes making concrete counter-ridges on both sides of the post-cast strip, setting water stop strips and performing waterproofing treatment. The installation of prefabricated components includes installing prefabricated concrete slabs and performing mortar bonding and slope adjustment treatment. The construction of the building system includes laying a composite covering, which includes applying a paint waterproof layer, pasting a roll waterproof layer, laying an isolation layer, laying a protective layer, setting a hydrophobic layer and laying a surface layer.

2. The method for pre-sealing the post-cast strip of the basement roof according to claim 1, characterized in that: The scaffolding construction comprises the following steps: installing the adjustable base according to the span, installing the vertical poles on the adjustable base, arranging the horizontal poles on the vertical poles according to the step distance, and installing the adjustable supports.

3. The method for pre-sealing the post-cast strip of the basement roof according to claim 2, characterized in that: The installation work platform includes placing the first wooden beam horizontally on the adjustable support, placing the second wooden beam vertically on the first wooden beam, and nailing the multilayer board on the second wooden beam.

4. The method for pre-sealing the post-cast strip of the basement roof according to claim 3, characterized in that: The construction of the counter-ridge structure includes pouring plain concrete counter-ridges on both sides of the post-cast strip, setting water-expanding water stop strips in the grooves of the plain concrete counter-ridges, and performing waterproof mortar slope leveling treatment on both sides of the plain concrete counter-ridges.

5. The method for pre-sealing the post-cast strip of the basement roof according to claim 4, characterized in that: The installation of the prefabricated components includes installing a prefabricated concrete slab on the plain concrete counter-ridge and bonding the prefabricated concrete slab and the plain concrete counter-ridge at their intersections using cement mortar.

6. The method for pre-sealing the post-cast strip of the basement roof according to claim 5, characterized in that: The laying of the composite covering comprises the following steps: applying a paint waterproof layer, pasting a roll waterproof layer, laying an isolation layer, laying a protective layer, setting a hydrophobic layer, and laying a surface layer on the precast concrete slab in sequence.

7. The method for pre-sealing the post-cast strip of the basement roof according to claim 6, characterized in that: The surface layer is a planting layer or a paving layer. The planting layer is used for planting flowers, plants and shrubs, and the paving layer is used for paving squares and roads.

8. The method for pre-closing the post-cast strip of the basement roof slab according to claim 7, characterized in that: Also includes, Backfilling of earthwork in the master plan area: after the construction of the building system is completed, backfilling of earthwork in the master plan area is carried out; Garden landscape construction, after backfilling the master plan, laying planting soil, planting greenery, and paving garden paths; After the basement roof settlement reaches the design age, concrete is poured in the reserved post-casting joint area to complete the final post-casting joint closure.

9. A pre-closed structure for the post-cast strip of the basement roof slab, characterized in that: include, A support system comprising a scaffold and a working platform, wherein the working platform is arranged on top of the scaffold; The post-cast strip pre-sealing system includes an anti-slope structure and prefabricated components, wherein the anti-slope structure is arranged on the basement roof structure, and the prefabricated components are installed on the anti-slope structure; The building system includes a composite covering layer, which is arranged on the post-cast zone pre-sealing system.

10. The structure for pre-sealing the post-cast strip of the basement roof according to claim 9, characterized in that: The scaffolding comprises an adjustable base, vertical poles, horizontal poles and adjustable supports, wherein the vertical poles are mounted on the adjustable base, and the horizontal poles and adjustable supports are mounted on the vertical poles; The working platform includes a first wooden beam, a second wooden beam and a multi-layer board arranged on the adjustable support, wherein the first wooden beam, the second wooden beam and the multi-layer board are arranged in sequence from bottom to top; The anti-slope structure includes a plain concrete anti-slope and a water-swelling waterstop strip provided on the basement roof structure, wherein the water-swelling waterstop strip is provided in a groove of the plain concrete anti-slope; The prefabricated component includes a prefabricated concrete panel installed on the counter-ridge structure, and the prefabricated concrete panel is bonded to the plain concrete counter-ridge by cement mortar; The composite covering comprises a coating waterproof layer, a coiled material waterproof layer, an isolation layer, a protective layer, a hydrophobic layer and a surface layer which are sequentially arranged on the precast concrete slab.

Images