CN115288180A - Permanent-temporary combined prefabricated membrane shell bearing platform structure and construction method thereof - Google Patents
Permanent-temporary combined prefabricated membrane shell bearing platform structure and construction method thereof Download PDFInfo
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- CN115288180A CN115288180A CN202211086161.8A CN202211086161A CN115288180A CN 115288180 A CN115288180 A CN 115288180A CN 202211086161 A CN202211086161 A CN 202211086161A CN 115288180 A CN115288180 A CN 115288180A
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- 239000012528 membrane Substances 0.000 title claims abstract description 98
- 238000010276 construction Methods 0.000 title claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 38
- 239000010959 steel Substances 0.000 claims abstract description 38
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000004567 concrete Substances 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000004873 anchoring Methods 0.000 claims description 19
- 238000005452 bending Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 108010068370 Glutens Proteins 0.000 claims description 5
- 235000021312 gluten Nutrition 0.000 claims description 5
- 239000004588 polyurethane sealant Substances 0.000 claims description 5
- 238000012805 post-processing Methods 0.000 claims description 3
- 239000011449 brick Substances 0.000 abstract description 14
- 238000000465 moulding Methods 0.000 abstract description 14
- 239000010410 layer Substances 0.000 description 26
- 230000000694 effects Effects 0.000 description 8
- 230000003014 reinforcing effect Effects 0.000 description 6
- 239000011241 protective layer Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000013556 antirust agent Substances 0.000 description 1
- 239000011469 building brick Substances 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
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Abstract
The invention relates to a membrane shell bearing platform structure capable of being prefabricated by combining a permanent surface and a temporary surface, which comprises a membrane shell bearing platform main body, wherein the membrane shell bearing platform main body comprises a bearing platform side wall and a bearing platform bottom plate, and the bearing platform side wall and the bearing platform bottom plate respectively comprise a prefabricated steel template, concrete fillers arranged in the prefabricated steel template and criss-cross reinforcing steel bars; the vertical steel bars on the side wall in the side wall of the bearing platform extend upwards out of the side wall of the bearing platform, and the top end of the vertical steel bars is bent inwards and horizontally; the bearing platform bottom plate is provided with a plurality of reserved pile holes and a plurality of bent lifting hook rings, the reserved pile holes are used for penetrating engineering piles, and the bent lifting hook rings are used for lifting the membrane shell bearing platform main body. The membrane shell bearing platform is used as a part of the structural bearing platform, so that the investment of a brick moulding bed is saved, and the influence on the protection and waterproof functions of the foundation bearing platform due to the damage, deformation and collapse of the brick moulding bed is avoided; the film shell bearing platform can be stably lifted by a crane in the construction process through the bent lifting shackle of the film shell bearing platform; the invention has simple and convenient installation, high construction speed and more guaranteed construction period, quality and safety.
Description
Technical Field
The invention relates to the field of building construction, in particular to a permanent-temporary combined prefabricated membrane shell bearing platform structure and a construction method thereof.
Background
The foundation cap refers to a reinforced concrete platform which is arranged on the top of a foundation pile and used for connecting the tops of the piles in order to bear and distribute loads transmitted by a pier body. At present, the traditional foundation bearing platform construction process is mainly used for building brick moulding beds, for most projects, the construction period of large-scale bearing platform building is long, the manual investment is high, the cost consumption is high, the pressure of the side surface of the brick moulding bed, which is subjected to backfilling soil, can be increased along with the increase of the building height, and the deformation and even collapse of the brick moulding bed can be caused in the backfilling soil tamping or concrete vibrating process, so that the protection and waterproof effects cannot be achieved.
The above problems are worth solving.
Disclosure of Invention
The invention provides a membrane shell bearing platform structure capable of being prefabricated through permanent combination and a construction method thereof, aiming at solving the problem that a brick moulding bed is adopted in the construction of the existing foundation bearing platform, and the protection and waterproof effects cannot be achieved due to the deformation of the brick moulding bed.
The technical scheme of the invention is as follows:
a membrane shell bearing platform structure capable of being prefabricated by combining permanent and temporary modes comprises a membrane shell bearing platform main body, wherein the membrane shell bearing platform main body comprises a bearing platform side wall and a bearing platform bottom plate, and the bearing platform side wall and the bearing platform bottom plate respectively comprise a prefabricated steel template, concrete fillers arranged in the prefabricated steel template and criss-cross reinforcing steel bars; the reinforcing steel bars in the side wall of the bearing platform comprise side wall vertical reinforcing steel bars, the side wall vertical reinforcing steel bars extend upwards out of the side wall of the bearing platform, and the top ends of the side wall vertical reinforcing steel bars are bent inwards and horizontally; the bearing platform bottom plate is provided with a plurality of reserved pile holes and a plurality of bent lifting hook rings, the reserved pile holes are used for penetrating engineering piles, and the bent lifting hook rings are used for lifting the membrane shell bearing platform main body.
The invention according to the scheme is characterized in that a bottom waterproof layer is arranged at the bottom of the membrane shell bearing platform main body, and a lateral waterproof layer is arranged on the outer side wall of the membrane shell bearing platform main body.
Further, a flat cushion layer is arranged between the bottom waterproof layer and the bottom of the bearing platform groove.
The invention according to the scheme is characterized in that the four sides of the bearing platform bottom plate are respectively provided with one bent hanging hook ring, and the four bent hanging hook rings are distributed in a cross shape.
The invention according to the above aspect is characterized in that the thickness of the platform base plate is greater than 1.5 times the thickness of the platform side wall, but less than 2 times the thickness of the platform side wall.
Further, the thickness of the side wall of the bearing platform is 100 mm, and the thickness of the bottom plate of the bearing platform is 170 mm.
The invention according to the scheme is characterized in that the top surfaces of the side walls of the bearing platform and the bottom plate of the bearing platform are provided with rough knurling surfaces.
The invention according to the scheme is characterized in that the bent lifting shackle is a lifting ring steel bar with a symmetrical inverted V-shaped structure, the bent lifting hook ring comprises a lifting ring part in the middle and anchoring parts on two sides, the lifting ring part is used for being connected with a lifting hook of a crane, and the anchoring parts are used for being connected with the bearing platform bottom plate in an anchoring mode.
Furthermore, the hanging ring part protrudes out of the bearing platform bottom plate by 100-150 mm.
Furthermore, the anchoring length of the anchoring part and the bearing platform bottom plate is not less than 30 times of the diameter of the lifting ring steel bar.
Furthermore, the model of the lifting ring reinforcing steel bar is HPB300, and the diameter of the lifting ring reinforcing steel bar is 20 millimeters.
Further, the thickness of the protective layer of the lifting ring steel bar is not less than 50 mm.
The invention according to the scheme is characterized in that the length of the horizontal bending section at the top end of the side wall vertical reinforcing steel bar is not less than 400 mm.
The invention according to the scheme is characterized in that the aperture of the reserved pile hole is 100 mm larger than the diameter of the engineering pile, and the center of the reserved pile hole is aligned with the center of the corresponding engineering pile.
Furthermore, polyurethane sealant is arranged between the engineering pile and the gap of the reserved pile hole.
According to the scheme, the steel bars in the bottom plate of the bearing platform comprise concave steel bars, notches of the concave steel bars are upward, and two short sides of the concave steel bars are connected with the side walls of the bearing platform in an anchoring mode.
The prefabricated membrane shell bearing platform structure is characterized by further comprising a basement bottom plate located above the membrane shell bearing platform main body, and the horizontal bending sections of the side wall vertical steel bars are connected with the basement bottom plate in an anchoring mode.
Furthermore, the basement bottom plate is provided with a bottom plate cushion layer and a bottom plate waterproof layer.
The invention also provides a construction method of the permanent-temporary combined prefabricated membrane shell bearing platform, which comprises the following steps:
step 1, manufacturing a drawing of a membrane shell bearing platform main body, and completing early preparation of production and manufacturing;
comprehensively analyzing the project through a BIM technology; splitting the type and the structure of the bearing platform, and making a corresponding large sample drawing; compiling corresponding process flow and installation sequence according to the number of the components of the split drawing;
step 2, manufacturing a membrane shell bearing platform main body according to a drawing;
a component factory manufactures prefabricated steel templates and steel bars in the prefabricated steel templates according to drawings; filling concrete to process into a film shell bearing platform main body;
step 301, firstly, earth excavation and foundation compaction are carried out to form a bearing platform groove;
step 302, inspecting a bearing platform groove, and pouring a leveling cushion layer at the bottom of the groove after the groove is inspected to be correct;
step 303, after concrete pouring of the leveled cushion layer is completed and the strength meets the requirement, constructing a bottom waterproof layer which needs to be leveled and smooth without obvious wrinkles;
and checking whether the position and the size of the reserved pile hole on the bottom plate of the bearing platform are consistent with those of the engineering pile.
hoisting the membrane shell bearing platform by using a crane through a bent hoisting shackle on the bearing platform bottom plate main body, and commanding the crane to slowly descend after an installer rechecks that all the pile positions enter the reserved pile holes in the process;
step 6, caulking and sealing the reserved pile hole;
after the membrane shell bearing platform main body is placed in place, sealing a gap between the membrane shell bearing platform main body and the engineering pile by adopting polyurethane sealant;
step 7, post-processing the membrane shell bearing platform to complete the basement bottom plate;
step 701, after the membrane shell bearing platform main body is installed, adhering the outer wall surface of the side wall of the bearing platform with a reserved lateral waterproof layer;
step 702, the top of the vertical steel bar of the side wall extends out of the top of the side wall of the bearing platform, and the gluten of the basement bottom plate is bent: horizontally bending towards the center of the membrane shell bearing platform main body to form a horizontal bending section;
and 703, constructing a basement bottom plate above the membrane shell bearing platform main body, wherein the basement bottom plate comprises a bottom plate cushion layer and a bottom plate waterproof layer of the basement bottom plate, and the integral waterproof effect is achieved.
The invention according to the scheme has the advantages that:
the membrane shell bearing platform is used as a part of the structural bearing platform, so that the investment of a brick moulding bed is saved, and the influence on the protection and waterproof functions of the foundation bearing platform due to the damage, deformation and collapse of the brick moulding bed is avoided; the membrane shell bearing platform can be stably lifted by a crane in the construction process through the bent lifting shackle of the membrane shell bearing platform, and the membrane shell bearing platform can be installed only by simple assistance of manpower, so that the manual labor is reduced; compared with the traditional brick moulding bed construction mode, the invention has the advantages of simple and convenient installation, high construction speed and more guaranteed construction period, quality and safety;
the prefabricated steel template for processing can be circularly applied to the next project; on the other hand, the invention avoids building waste caused by cutting the prefabricated plate in the brick moulding bed process, so the invention has more advantages in the aspects of energy saving and environmental protection.
Drawings
FIG. 1 is a plan view of a membrane shell platform body of the present invention;
FIG. 2 is a longitudinal cross-sectional view of the membrane shell platform body of the present invention;
fig. 3 is an exploded view of the membrane housing cap body of fig. 2.
In the figure, 1, a membrane shell cushion cap body; 10. a cushion cap bottom plate; 11. a side wall of the platform;
2. side wall vertical steel bars; 21. a horizontal bending section; 3. pile holes are reserved; 4. bending and hanging a hook ring; 41. a suspension ring portion; 42. an anchoring part; 5. concave-shaped steel bars;
6. a basement floor; 7. and (5) engineering piles.
Detailed Description
For better understanding of the objects, technical solutions and effects of the present invention, the present invention will be further explained with reference to the accompanying drawings and examples. It is to be noted that the following examples are provided only for illustrating the present invention and are not intended to limit the present invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The meaning of "a number" is two or more unless specifically defined otherwise.
As shown in fig. 1-3, a membrane shell bearing platform structure that faces combination can be prefabricated forever, including membrane shell bearing platform main part 1, membrane shell bearing platform main part 1 includes cushion cap lateral wall 11 and cushion cap bottom plate 10, cushion cap lateral wall 11 and cushion cap bottom plate 10 all include prefabricated steel form, and locate concrete filler and the vertically and horizontally staggered reinforcing bar in the prefabricated steel form, concrete filler and the vertically and horizontally staggered reinforcing bar constitute concrete reinforcement structure for the structural strength of membrane shell bearing platform main part is high, can bear bigger and bigger backfill side pressure in the backfill tamping process, does not have the deformation condition similar with the brick bed film and takes place. The prefabricated steel template can be circularly applied to the next project, so that the prefabricated steel template has more advantages in the aspects of energy conservation and environmental protection.
The reinforcing steel bars in the side wall 11 of the bearing platform comprise side wall vertical reinforcing steel bars 2, the side wall vertical reinforcing steel bars 2 extend upwards out of the side wall 11 of the bearing platform, and the top ends of the side wall vertical reinforcing steel bars 2 are bent inwards horizontally; the cushion cap bottom plate 10 is provided with a plurality of reserved pile holes 3 and a plurality of bent hook rings 4, the reserved pile holes 3 are used for penetrating the engineering piles 7, and the bent hook rings 4 are used for lifting the membrane shell cushion cap main body 1. Therefore, the membrane shell bearing platform is used as a part of the structural bearing platform, so that the investment of a brick moulding bed is saved, and the influence on the protection and waterproof functions of the foundation bearing platform due to the damage, deformation and collapse of the brick moulding bed is avoided; through the bent lifting shackle of the membrane shell bearing platform, the membrane shell bearing platform can be stably lifted by a crane in the construction process, and the membrane shell bearing platform can be installed only by simple manual assistance, so that the manual labor is reduced.
The reinforcing bar in the cushion cap bottom plate 10 includes concave reinforcing bar 5, and concave reinforcing bar 5's notch is up, and two minor faces and the 11 anchor of cushion cap lateral wall of concave reinforcing bar 5 are connected. The concave-shaped reinforcing steel bars comprise longitudinal concave-shaped reinforcing steel bars and transverse concave-shaped reinforcing steel bars, the two concave-shaped reinforcing steel bars are criss-cross, a grid is formed on the bearing platform bottom plate, and a plurality of connecting short reinforcing steel bars extending into the bearing platform side wall are formed on the bearing platform side wall, so that the connection between the bearing platform side wall and the bearing platform bottom plate is tighter, and the overall structure strength of the membrane shell bearing platform is further improved.
The bottom of membrane shell cushion cap main part 1 is equipped with the bottom waterproof layer, and the lateral wall of membrane shell cushion cap main part 1 is equipped with the side direction waterproof layer for membrane shell cushion cap structure all possesses good water-proof effects all around. Preferably, a leveling cushion layer is arranged between the bottom waterproof layer and the bottom of the bearing platform groove and serves as a leveling foundation of the bottom waterproof layer, and the leveling cushion layer is smooth and straight and does not have obvious wrinkles when the bottom waterproof layer is constructed.
In a preferred embodiment, the four sides of the base plate 10 are each provided with a bent hook loop 4, and the four bent hook loops 4 are distributed in a cross shape. When the hoisting operation is carried out, the lifting hooks of the crane are connected to the four bent hoisting hook rings, the acting force is uniform, so that the membrane shell bearing platform main body is stable in the hoisting process, and finally, the membrane shell bearing platform main body is stably installed in the bearing platform groove.
In a preferred embodiment, the thickness of the platform floor 10 is greater than 1.5 times the thickness of the platform side walls 11, but less than 2 times the thickness of the platform side walls 11. In one embodiment, the thickness of the side walls 11 of the platform is 100 mm and the thickness of the bottom plate 10 of the platform is 170 mm. The bottom plate and the side wall of the bearing platform have enough thickness to ensure the structural strength and the deformation resistance of the main body of the bearing platform of the membrane shell; the bearing platform bottom plate and the bearing platform side wall are arranged according to a reasonable structural proportion, so that the center of gravity of the membrane shell bearing platform main body is stable and is not easy to shake in the hoisting process.
The top surfaces of the bearing platform side walls 11 and the top surface of the bearing platform bottom plate 10 are provided with rough-drawing surfaces.
In the invention, the curved lifting hook ring 4 is a lifting ring steel bar with a symmetrical structure in a shape like a Chinese character 'ji', the curved lifting hook ring 4 comprises a lifting ring part 41 in the middle and anchoring parts 42 at two sides, the lifting ring part 41 is used for being connected with a lifting hook of a crane, and the anchoring parts 42 are used for being connected with the bearing platform bottom plate 10 in an anchoring manner. The anchoring part of the bent lifting shackle is firmly combined with the bearing platform bottom plate, so that a stable stress point can be provided for the lifting process, and safety guarantee is provided for the lifting process; the hoisting ring part of the bent hoisting shackle is convenient for constructors to fast hang the hoisting hook of the crane, and the construction efficiency is improved.
The suspension ring portion 41 protrudes from the base plate of the platform by 100 mm to 150 mm, and in one embodiment, the suspension ring portion 41 protrudes from the base plate of the platform by 150 mm. The anchoring length of the anchoring part 42 and the bearing platform bottom plate 10 is not less than 30 times of the diameter of the lifting ring steel bar, and the combination firmness of the bent lifting hook ring and the bearing platform bottom plate is further improved. In one embodiment, the rebar of the lifting ring is model HPB300, with a diameter of 20 mm; the thickness of the protective layer of the lifting ring steel bar is not less than 50 mm, and the protective layer adopts conventional steel bar antirust agent or antirust paint.
In the present invention, the aperture of the pre-pile hole 3 is 100 mm larger than the diameter of the engineering pile 7, and the center of the pre-pile hole 3 is aligned with the center of the corresponding engineering pile 7. And polyurethane sealant is arranged between the gap between the engineering pile 7 and the reserved pile hole 3, so that the waterproof sealing effect of the bottom of the membrane shell bearing platform is ensured.
In the invention, the permanently combined prefabricated membrane shell bearing platform structure also comprises a basement bottom plate 6 positioned above the membrane shell bearing platform main body 1, and the horizontal bending sections 21 of the side wall vertical steel bars 2 are connected with the basement bottom plate 6 in an anchoring way. The length of the horizontal bending section 21 at the top end of the side wall vertical reinforcing steel bar 2 is not less than 400 mm, so that the combination firmness of the side wall vertical reinforcing steel bar and the basement bottom plate can be increased. Wherein, basement bottom plate 6 is equipped with bottom plate bed course and bottom plate waterproof layer, realizes improving and faces the holistic water-proof effects of combination prefabricated membrane shell cushion cap structure forever.
The invention also provides a construction method of the permanent-temporary combined prefabricated membrane shell bearing platform, which comprises the following steps:
step 1, manufacturing a drawing of a membrane shell bearing platform main body, and completing early preparation of production and manufacturing;
the project is comprehensively analyzed through the BIM technology; splitting the type and the structure of the bearing platform, and making a corresponding thumbnail; compiling corresponding process flow and installation sequence according to the number of the components of the split drawing;
step 2, manufacturing a membrane shell bearing platform main body according to a drawing;
a component factory manufactures prefabricated steel templates and steel bars in the prefabricated steel templates according to drawings; filling concrete to process into a membrane shell bearing platform main body;
step 301, firstly, earth excavation and foundation compaction are carried out to form a bearing platform groove;
step 302, inspecting a bearing platform groove, and pouring a leveling cushion layer at the bottom of the groove after the groove is inspected to be correct;
step 303, after concrete pouring of the leveled cushion layer is completed and the strength meets the requirement, constructing a bottom waterproof layer which needs to be leveled and smooth without obvious wrinkles;
and checking whether the position and the size of the reserved pile hole on the bottom plate of the bearing platform are consistent with those of the engineering pile.
hoisting the membrane shell bearing platform by using a crane through a bent hoisting shackle on the bearing platform bottom plate main body, and commanding the crane to slowly descend after an installer rechecks that all the pile positions enter the reserved pile holes in the process;
step 6, caulking and sealing the reserved pile hole;
after the membrane shell bearing platform main body is placed in place, sealing a gap between the membrane shell bearing platform main body and the engineering pile by adopting polyurethane sealant;
step 7, post-processing the membrane shell bearing platform to complete the basement bottom plate;
step 701, after the installation of the membrane shell bearing platform main body is completed, adhering the outer wall surface of the side wall of the bearing platform with a reserved lateral waterproof layer;
step 702, extending the top of the vertical steel bar of the side wall out of the top of the side wall of the bearing platform, and bending the basement bottom plate gluten when the basement bottom plate gluten is met: horizontally bending towards the center of the membrane shell bearing platform main body to form a horizontal bending section;
and 703, constructing a basement bottom plate above the membrane shell bearing platform main body, wherein the basement bottom plate comprises a bottom plate cushion layer and a bottom plate waterproof layer of the basement bottom plate, and an integral waterproof effect is achieved.
Compared with the traditional brick moulding bed construction mode, the construction method has the advantages of simple and convenient installation, high construction speed and more guaranteed construction period, quality and safety.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A permanently-bonded prefabricated membrane shell bearing platform structure is characterized by comprising a membrane shell bearing platform main body, wherein the membrane shell bearing platform main body comprises a bearing platform side wall and a bearing platform bottom plate, and the bearing platform side wall and the bearing platform bottom plate respectively comprise a prefabricated steel template, concrete fillers arranged in the prefabricated steel template and criss-cross reinforcing steel bars;
the reinforcing steel bars in the side wall of the bearing platform comprise side wall vertical reinforcing steel bars, the side wall vertical reinforcing steel bars extend upwards out of the side wall of the bearing platform, and the top ends of the side wall vertical reinforcing steel bars are inwards bent horizontally; the bearing platform bottom plate is provided with a plurality of reserved pile holes and a plurality of bent lifting hook rings, the reserved pile holes are used for penetrating engineering piles, and the bent lifting hook rings are used for lifting the membrane shell bearing platform main body.
2. The permanently bonded, prefabricatable membrane shell platform structure of claim 1 wherein the bottom of the membrane shell platform body is provided with a bottom waterproof layer and the outer side wall of the membrane shell platform body is provided with a lateral waterproof layer.
3. The permanently temporary combined prefabricated membrane shell bearing platform structure as claimed in claim 1, wherein the bent lifting shackle is a lifting shackle steel bar with a symmetrical structure in a shape like a Chinese character 'ji', the bent lifting shackle comprises a lifting shackle part in the middle and anchoring parts on two sides, the lifting shackle part is used for being connected with a lifting hook of a crane, and the anchoring parts are used for being connected with a bearing platform bottom plate in an anchoring manner.
4. The permanently bonded and prefabricatable membrane shell bearing platform structure of claim 3, wherein the anchoring length of the anchor to the bearing platform floor is not less than 30 times the rebar diameter of the lifting ring.
5. The permanently bonded, prefabricatable membrane shell deck structure of claim 1, wherein the length of the horizontally bent section of the top end of the sidewall vertical rebar is no less than 400 millimeters.
6. The permanently bonded prefabricatable membrane shell cap structure of claim 1, wherein the pre-existing pile hole has a diameter 100 mm larger than the diameter of an engineering pile and the center of the pre-existing pile hole is aligned with the center of the corresponding engineering pile.
7. The permanently bonded, precast membrane shell deck structure of claim 6, wherein a polyurethane sealant is provided between the gap between the engineering pile and the pre-fabricated pile hole.
8. The permanently bonded, prefabricated membrane shell bearing platform structure of claim 1, further comprising a basement floor above the membrane shell bearing platform body, the horizontal bent sections of the sidewall vertical rebars being in anchored connection with the basement floor.
9. A construction method of a permanent-temporary combined prefabricated membrane shell bearing platform comprises the following steps:
step 1, manufacturing a drawing of a membrane shell bearing platform main body, and completing early preparation of production and manufacturing;
step 2, manufacturing a membrane shell bearing platform main body according to a drawing;
step 3, completing the preparation work of a bearing platform groove before the installation of the membrane shell bearing platform main body;
step 4, checking whether the membrane shell bearing platform main body meets the design requirements;
step 5, hoisting the membrane shell bearing platform main body;
step 6, caulking and sealing the reserved pile hole;
and 7, post-processing the membrane shell bearing platform to complete the basement bottom plate.
10. The method of constructing a permanently bonded, prefabricatable membrane shell cap of claim 9, wherein step 7 comprises the steps of:
step 701, after the installation of the membrane shell bearing platform main body is completed, adhering the outer wall surface of the side wall of the bearing platform with a reserved lateral waterproof layer;
step 702, extending the top of the vertical steel bar of the side wall out of the top of the side wall of the bearing platform, and bending the basement bottom plate gluten when the basement bottom plate gluten is met: horizontally bending towards the center of the membrane shell bearing platform main body to form a horizontal bending section;
and 703, constructing a basement bottom plate above the membrane shell bearing platform main body, wherein the basement bottom plate comprises a bottom plate cushion layer and a bottom plate waterproof layer of the basement bottom plate.
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