CN108149819B - Integrated superposed outer wall of building bottom reinforcing area and production and construction method thereof - Google Patents
Integrated superposed outer wall of building bottom reinforcing area and production and construction method thereof Download PDFInfo
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- CN108149819B CN108149819B CN201810092941.0A CN201810092941A CN108149819B CN 108149819 B CN108149819 B CN 108149819B CN 201810092941 A CN201810092941 A CN 201810092941A CN 108149819 B CN108149819 B CN 108149819B
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- 238000010276 construction Methods 0.000 title claims abstract description 73
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 21
- 239000004567 concrete Substances 0.000 claims abstract description 52
- 238000011065 in-situ storage Methods 0.000 claims abstract description 39
- 238000009434 installation Methods 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims description 48
- 238000004321 preservation Methods 0.000 claims description 33
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 28
- 238000009413 insulation Methods 0.000 claims description 16
- 239000002356 single layer Substances 0.000 claims description 13
- 230000002457 bidirectional effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 6
- 235000000396 iron Nutrition 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000005336 cracking Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 230000000284 resting effect Effects 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 1
- 230000010354 integration Effects 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 10
- 239000010959 steel Substances 0.000 abstract description 10
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000007306 turnover Effects 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000009415 formwork Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011376 self-consolidating concrete Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/04—Producing shaped prefabricated articles from the material by tamping or ramming
- B28B1/045—Producing shaped prefabricated articles from the material by tamping or ramming combined with vibrating or jolting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
- B28B1/0873—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould the mould being placed on vibrating or jolting supports, e.g. moulding tables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/78—Heat insulating elements
- E04B1/80—Heat insulating elements slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
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Abstract
The invention relates to the field of building walls, in particular to an integrated superposed outer wall of a building bottom reinforcing area and a production and construction method thereof. The concrete structure wall comprises an inner leaf cast-in-situ structure layer, wherein a steel bar net rack is arranged in the inner She Xianjiao structure layer; the outer mold prefabricated wall body is fixedly connected with the inner leaf cast-in-situ structural layer through a plurality of anchor rod pulling parts. The construction is simple, the overall structure is simple, the limitation of large turnover of the on-site wet operation template is solved, the generation of construction waste is reduced, the on-site installation efficiency is improved, the requirements of people are more effectively met, and the problems in the prior art are solved.
Description
Technical Field
The invention relates to the field of building walls, in particular to an integrated superposed outer wall of a building bottom reinforcing area.
Background
High-rise buildings refer to residential buildings with heights greater than 27 meters and non-single-layer buildings, warehouses and other civil buildings with heights greater than 24 meters, and are becoming more and more common in society with the continuous development of the technology of the current building industry and the demands of people on high-rise buildings. High-rise buildings have more stringent requirements on construction difficulty and overall structural strength of the building than ordinary buildings. There are many factors affecting whether the overall structure of a high-rise building can meet the building requirements, wherein the wall structure of a reinforced area at the bottom of the building and the construction method are important parameter indexes. The bottom reinforcing area is mainly used in high-rise building structures, and is called as the area range of reinforcing measures adopted for improving the shearing bearing capacity of the building structures in order to enable the building structures to have certain ductility after plastic hinging in a certain height range of the bottoms of the building structures under the action of earthquakes. When the construction of the building wall body is carried out, the outer steel frame body is firstly built, concrete is poured on the outer steel frame body after the outer steel frame body is built, and then subsequent construction is carried out; the traditional construction method of the bottom reinforcing area is that a cast-in-situ structural layer is stuck to the outside of the outer wall for heat preservation, so that the heat preservation layer is positioned at the outermost side of the outer wall, and in addition, when the heat preservation layer is arranged, an A-level heat preservation plate is required to meet the standard requirements of building heat preservation, fire prevention and the like, so that the construction method is not economical, and the requirements of the existing wall structure on the grade and thickness of the heat preservation plate are high; the other building structure and construction are that the inner leaf wall and the outer leaf wall are cast in situ at the same time, and the outer leaf wall can meet the requirement of casting in situ by self-compacting concrete, so that the requirement on concrete slump is higher during construction. Meanwhile, each part of the traditional construction method can use more field wet operation construction in the construction process, more construction wastes can be generated in a large amount after each construction step in the whole construction site by frequently adopting the wet operation construction, the whole construction site is disordered, the waste of building materials is easily caused, the inconvenience is caused in the construction or material handling process, the potential safety hazard of the construction site is more, in addition, the standard requirements of building heat preservation, fire prevention and the like can be met by adopting the B-stage heat preservation plate when the heat preservation layer is arranged, and obviously, the requirements of people cannot be effectively met by the wall design at the reinforcing area at the bottom of the existing building.
Disclosure of Invention
The integrated superposed outer wall of the building bottom reinforcing area is simple in construction and overall structure, solves the limitation of large turnover amount of a field wet operation template, reduces the generation of building rubbish, shortens the later construction period, saves labor, improves the field installation efficiency, more effectively meets the demands of people, and solves the problems in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the integrated superposed outer wall of the building bottom reinforcing area comprises an outer prefabricated wall body, wherein the outer prefabricated wall body comprises a plurality of prefabricated plates which are mutually abutted and matched, each two adjacent prefabricated plates are matched through rabbets arranged at the upper end part and the lower end part of each prefabricated plate, a character code fixedly connected with the prefabricated plates through wire lugs and bolts is respectively arranged at the outer side of each rabbet, the concrete structure wall body comprises an inner leaf cast-in-situ structural layer, and a steel bar net rack is arranged in the inner She Xianjiao structural layer; the outer mold prefabricated wall body is fixedly connected with the inner leaf cast-in-situ structural layer through a plurality of heat preservation connecting pieces, limiting drawknot pieces and anchor rod pulling parts; the middle upper part of the outer mold prefabricated wall body is provided with an inverted cone-shaped connecting device, and the inner end of the inverted cone-shaped connecting device is connected with an inclined strut supported on the floor.
The precast slab comprises an outer leaf plate, and a reinforcing steel mesh is arranged in the outer leaf plate; a heat-preserving plate is fixedly connected on the inner side wall of the outer blade plate.
A plurality of limiting drawknot members are arranged in each precast slab, the outer ends of the limiting drawknot members are positioned in the outer leaf plates, and the inner ends of the limiting drawknot members penetrate through the heat insulation plates and extend into the inner She Xianjiao structural layer.
The anchor rod pulling component comprises an anchor rod penetrating through the prefabricated wall body of the outer mold and the cast-in-situ structural layer of the inner leaf, and plays a role in connecting and fixing the outer leaf plate and the inner template, angle irons are respectively sleeved at two ends of the anchor rod, and the angle irons are respectively arranged on the outer side of the anchor rod in a matched mode and fixed through fastening nuts and gaskets.
The inverted cone connecting device comprises an inverted cone connecting piece arranged in a hole of the inner leaf cast-in-situ structural layer, the front end of the inverted cone connecting piece extends into the outer leaf plate, and an extension bolt extends into the inner cavity of the front end of the inverted cone connecting piece through a reserved hole of the outer leaf plate and is fastened and screwed with an embedded nut; the rear end of the inverted cone-shaped connecting piece is flush with the inner side wall of the inner She Xianjiao structural layer, the end of a bolt extends into the cavity of the inverted cone-shaped connecting piece and is connected with a built-in nut in a fastening and screwing mode, and the inverted cone-shaped connecting piece is connected with the upper end of the external diagonal brace through the bolt and the transition piece.
The production and construction method of the integrated superposition outer wall of the building bottom reinforcing area comprises the following production and construction steps:
a1: producing and manufacturing prefabricated plates;
a2: connecting the prefabricated plates through a character code to form an outer mold prefabricated wall;
a3: installing an external mold prefabricated wall body on a construction site, and carrying out cast-in-situ manufacturing on an inner leaf cast-in-situ structural layer;
a4: surface treatment: after the inner leaf cast-in-situ structural layer is disassembled, repairing the part with the defect on the surface in time, and performing concrete curing according to the standard requirement to obtain the integrated superposed outer wall of the building bottom reinforced area.
The production method of the prefabricated plate comprises the following steps:
s1: and (3) processing a die: cleaning the prefabricated plate mould until no residue or foreign matter exists on the surface, and no cement paste and concrete residue can be left;
s2: installing an insulation board according to the size structure of the mould; during installation, the joint connection is carried out, so that firmness and no slurry leakage are ensured; extruding the polystyrene board after the heat preservation board is 80 mm;
s3: installing a single-layer bidirectional reinforcing steel bar net sheet and a heat preservation connecting piece: firstly, a single-layer bidirectional reinforcing steel bar net sheet is installed and fixed on an insulation board, and then an insulation connecting piece, a limiting drawknot piece and an embedded piece are installed according to design requirements; firstly, installing a single-layer bidirectional reinforcing steel bar net sheet, wherein the spacing between reinforcing steel bars in the reinforcing steel bar net sheet is 150mm, and then installing a heat preservation connecting piece, a limiting drawknot piece and an embedded piece after the single-layer bidirectional reinforcing steel bar net sheet is installed;
s4: pouring concrete by adopting an automatic distributing machine to form an outer blade plate, vibrating uniformly, and finishing slurry; before concrete is poured, the precast slab member is subjected to hidden acceptance, and concrete can be poured after the acceptance; the concrete molding adopts an automatic vibrating die table device to vibrate so as to ensure that the concrete is compact in vibration; the concrete should be poured continuously, the thickness of the pouring layer is 60mm, when the mould, the embedded part, the reinforcing steel mesh and the like are deformed and shifted, the reinforcing and correcting measures should be taken in time;
s5: curing and demolding to obtain a prefabricated plate, namely the prefabricated plate; after concrete pouring and vibrating are completed, the resting time is 15-20min, the prefabricated part is primarily maintained in a precuring kiln, after the surface moisture of the prefabricated plate is evaporated to dryness, the prefabricated part is transferred to a curing kiln for steam curing, the heating speed is 10-20 ℃/h, the constant temperature is preferably 50-60 ℃, the constant temperature time is 1.5h at 50 ℃, and the cooling speed is 10-20 ℃/h; before the prefabricated precast slab component is disassembled and lifted, the strength of the concrete test block maintained under the same condition is checked, and the model disassembly lifting after the designed model disassembly lifting strength is achieved.
The construction steps of the cast-in-situ construction of the inner leaf cast-in-situ structural layer in the A3 are as follows:
a1: installing and fixing a precast slab on a construction site; the method comprises the steps of on-site installation, hoisting a precast slab to a preset position by using a tower crane, connecting an inclined stay bar to fix the precast slab by using an inverted conical detachable connecting device with the wall thickness of 10mm embedded in the precast slab, connecting the precast slab in the horizontal direction and the vertical direction by using a character code, and fixing by using a built-in bolt;
a2: binding reinforcing steel bars, supporting templates, and preparing pouring concrete; binding reinforcing steel bars on site, taking a precast slab as an external template of the structural layer, supporting an internal template, and preparing pouring concrete after the internal template is installed and fixed;
a3: casting concrete on a construction site; when concrete is poured, the concrete should be continuously poured and vibrated in layers, so that the situation that steel bars, templates, embedded parts and the like are touched during vibration is avoided, and after vibration, the steel bars thrown out of the wall are tidied;
a4: removing the mould and maintaining; and (3) after the concrete reaches the early strength, performing form stripping treatment, curing the concrete according to the standard requirements at normal temperature, and performing surface treatment to obtain the integrated laminated outer wall of the building bottom reinforcing area.
The invention has the advantages that the construction is simple, the whole structure is simple, the prefabricated wall body can be directly used as an outer template by arranging the outer mould, the outer template is not required to be additionally disassembled after the construction is completed, the construction process is simple, the limitation of large turnover of the on-site wet operation template is solved, the generation of construction waste is reduced, the later construction period is shortened, the labor is saved, and the on-site installation efficiency is improved; after construction is finished, the whole wall body structure is firm, so that the requirements of building standards can be well met, and meanwhile, the requirements of heat preservation, fire prevention, strength and the like can be ensured; the concrete structure wall body is integrally cast in situ, heat preservation integrated construction is carried out during construction, modular assembly is carried out, site construction is more convenient and safer, the application range is wider, the production and construction steps are simple, and time and labor are saved; the external mold prefabricated wall body mainly adopts a forward forging process in the aspect of production technology, and a heat insulation plate, various connecting pieces and connecting devices are paved on a mold table at first, and then the prefabricated wall body is formed manually; the production line production beat is easy to control through the optimal design; and the requirements of people are more effectively met.
Drawings
Fig. 1 is a schematic cross-sectional view of the present invention.
Fig. 2 is an enlarged schematic view of the portion a in fig. 1.
Fig. 3 is an enlarged schematic view of the portion B in fig. 1.
In the figure, 1, prefabricated plates; 2. a tongue-and-groove; 3. a wire ear; 4. a bolt; 5. a character code; 6. an inner leaf cast-in-situ structural layer; 7. a steel bar net rack; 8. Diagonal bracing; 9. An outer leaf; 10. reinforcing steel bar meshes; 11. a thermal insulation board; 12. Limiting drawknot members; 13. pulling the anchor rod; 14. angle iron; 15. an inverted cone-shaped connection member; 16. lengthening the bolt; 17. and a built-in nut.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below with reference to the following detailed description and the accompanying drawings.
As shown in fig. 1-3, the integrated superposed outer wall of the reinforced area at the bottom of the building comprises an outer prefabricated wall body, wherein the outer prefabricated wall body comprises a plurality of prefabricated plates 1 which are mutually abutted and matched, each two adjacent prefabricated plates 1 are matched through rabbets 2 arranged at the upper end and the lower end of each prefabricated plate, and after the rabbets 2 are arranged, even if water enters the inclined plane of a connecting part in the case of rainy weather in the later period, the water flows out downwards and outwards under the action of gravity, so that the risk of cracking the wall body caused by water inlet at joints can be reduced, and the service life of the whole wall body is ensured; the waterproof effect is good; the outer sides of the rabbets 2 are respectively provided with a character code 5 fixedly connected with the precast slab 1 through wire lugs 3 and bolts 4, the concrete structure wall comprises an inner leaf cast-in-situ structure layer 6, and a reinforcing steel bar net frame 7 is arranged in the inner leaf cast-in-situ structure layer 6; the outer mold prefabricated wall body is fixedly connected with the inner leaf cast-in-situ structural layer 6 through a plurality of heat preservation connecting pieces, limiting drawknot pieces and anchor rod 13 parts, and the anchor rod mainly plays a role in fixing an inner mold plate; the middle upper part of the outer mold prefabricated wall body is provided with an inverted cone-shaped connecting device, and the inner end of the inverted cone-shaped connecting device is connected with an inclined strut 8 supported on the floor.
The precast slab 1 comprises an outer leaf plate 9, and a reinforcing mesh 10 is arranged in the outer leaf plate 9; the outer side of the heat-insulating plate 11 is not directly contacted with the outside, but the outer side of the heat-insulating plate 11 is provided with one layer of outer leaf plate 9, which not only can play a role of an outer template when the cast-in-situ structural layer 6 of the inner leaf is poured, but also can meet the supporting strength when the outer template is used, and in addition, the outer leaf plate 9 can play a role of protecting and insulating the heat-insulating plate 11 to a certain extent, so that the thickness of the heat-insulating layer can meet the heat-insulating and fireproof performances on building standards without being too thick, and the heat-insulating material is saved; the reinforcing mesh 10 can enhance the strength of the outer blade 9.
A plurality of limiting drawknot members 12 are arranged in each precast slab 1, the outer ends of the limiting drawknot members 12 are positioned in the outer leaf plates 9, and the inner ends of the limiting drawknot members penetrate through the heat insulation plates 11 and extend into the inner leaf cast-in-situ structural layer 6; the limiting drawknot 12 can ensure the connection strength between the components.
The pull anchor rod 13 part comprises a pull anchor rod 13 penetrating through the outer mold prefabricated wall body and the inner leaf cast-in-situ structural layer 6, angle irons 14 are respectively sleeved at two ends of the pull anchor rod 13, and the angle irons 14 are respectively matched and arranged at the outer sides of the pull anchor rod 13 to be fixed by fastening nuts and gaskets; the anchor rod 13 can be pulled to take the inner template of the inner leaf cast-in-situ structural layer 6 of the whole outer wall body and the prefabricated wall body of the outer mold, plays a good role in fixing the inner template, and can be recycled.
The back taper connecting device comprises a back taper connecting piece 15 arranged in a hole of the inner leaf cast-in-situ structural layer 6, the front end of the back taper connecting piece 15 extends into the outer leaf 9, and an extension bolt 16 extends into the inner cavity of the front end of the back taper connecting piece 15 through a reserved hole of the outer leaf 9 and is fastened and screwed with a built-in nut 17; the rear end of the inverted cone-shaped connecting piece 15 is flush with the inner side wall of the inner leaf cast-in-situ structural layer 6, the end part of a bolt 4 extends into the cavity of the inverted cone-shaped connecting piece 15 and is in fastening screwing connection with an embedded nut 17, and the inverted cone-shaped connecting piece 15 is connected with the upper end of the external diagonal bracing 8 through the bolt 4 and a transition piece; the inverted cone-shaped connecting device, the inclined strut 8 and the character code 5 can be recycled, so that the resource recycling is realized, and the construction method is economical and practical, and compared with the construction method of installing the heat preservation later, the construction process is reduced, the construction efficiency is improved, the construction period is shortened, and the resource consumption is reduced; the post-pasting heat preservation needs to use a grade A heat preservation material, and heat preservation integrated construction only needs to use a grade B heat preservation material, so that engineering cost is reduced; in addition, the lower part of the diagonal bracing 8 rod is directly connected to the roof surface through the connecting bolt 4 for supporting, so that the supporting strength is high; meanwhile, the inclined strut 8 rod can achieve an adjusting function during installation, so that constructors can accurately adjust the perpendicularity of the outer template and the inner template according to construction conditions, the stress condition after later building forming can be guaranteed when the inner leaf cast-in-situ structural layer 6 is poured after the perpendicularity is adjusted, and damage to the wall body caused by component force caused by inclination of the wall body is prevented.
The production and construction method of the integrated superposition outer wall of the building bottom reinforcing area comprises the following production and construction steps:
a1: manufacturing a prefabricated plate 1;
a2: the prefabricated plates 1 are connected through a character code 5 to form an external prefabricated wall body;
a3: installing an external mold prefabricated wall body on a construction site, and carrying out cast-in-situ manufacturing on an inner leaf cast-in-situ structural layer 6;
a4: surface treatment: after the inner leaf cast-in-situ structural layer 6 is disassembled, repairing the part with the surface defect in time, and performing concrete curing according to the standard requirement to obtain the integrated superposed outer wall of the building bottom reinforced area.
The production method of the prefabricated slab 1 comprises the following steps:
s1: and (3) processing a die: cleaning the prefabricated plate 1 mould until no residue or foreign matter exists on the surface, and no cement paste and concrete residue can be left;
s2: installing an insulation board 11 according to the size construction of the mould; during installation, the joint connection is carried out, so that firmness and no slurry leakage are ensured; the heat insulation board 11 is an extruded polystyrene board with the thickness of 80 mm;
s3: installing a single-layer bidirectional reinforcing steel bar net sheet 10 and a heat preservation connecting piece: firstly, a single-layer bidirectional reinforcement mesh 10 is installed and fixed on a heat insulation plate 11, and then a heat insulation connecting piece, a limiting drawknot piece 12 and an embedded piece are installed according to design requirements; firstly, installing a single-layer bidirectional reinforcing steel bar net sheet 10, wherein the spacing between reinforcing steel bars in the reinforcing steel bar net sheet 10 is 150mm, and then installing a heat preservation connecting piece, a limiting drawknot piece 12 and an embedded piece after the single-layer bidirectional reinforcing steel bar net sheet 10 is installed;
s4: pouring concrete by adopting an automatic distributing machine to form an outer blade plate 9, vibrating uniformly, and finishing slurry; the precast slab 1 components should be subjected to hidden acceptance before concrete is poured, and concrete can be poured after the acceptance; the concrete molding adopts an automatic vibrating die table device to vibrate so as to ensure that the concrete is compact in vibration; the concrete should be poured continuously, the thickness of the pouring layer is 60mm, when the mould, the embedded part, the reinforcing steel mesh 10 and the like are deformed and shifted, the reinforcing and correcting measures should be taken in time;
s5: curing and demolding to obtain a prefabricated plate 1, namely the prefabricated plate 1; after pouring concrete and vibrating, carrying out primary curing on the prefabricated part in a pre-curing kiln for 15-20min, transferring the prefabricated part to the curing kiln for steam curing after the water on the surface of the prefabricated plate 1 is evaporated to dryness, wherein the heating speed is 10-20 ℃/h, the constant temperature is preferably 50-60 ℃, the constant temperature time is 1.5h at 50 ℃, and the cooling speed is 10-20 ℃/h; before the prefabricated precast slab 1 component is disassembled and lifted, the strength of the concrete test block maintained under the same condition is checked, and the model disassembly lifting after the designed model disassembly lifting strength is achieved.
The construction steps of the cast-in-situ construction of the inner leaf cast-in-situ structural layer 6 in the A3 are as follows:
a1: installing and fixing the precast slab 1 on a construction site; the method comprises the steps of on-site installation, hoisting a precast slab 1 to a preset position by using a tower crane, connecting a diagonal brace 8 rod to fix the precast slab 1 by using an inverted cone-shaped detachable connecting device with the wall thickness of 10mm pre-buried in the precast slab 1, connecting the precast slab 1 in the horizontal direction and the vertical direction by using a character code 5, and fixing the precast slab by using a built-in bolt 4;
a2: binding reinforcing steel bars, supporting templates, and preparing pouring concrete; binding reinforcing steel bars on site, taking the precast slab 1 as an outer template of the structural layer, supporting an inner template, and preparing pouring concrete after the inner template is installed and fixed;
a3: casting concrete on a construction site; when concrete is poured, the concrete should be continuously poured and vibrated in layers, so that the situation that steel bars, templates, embedded parts and the like are touched during vibration is avoided, and after vibration, the steel bars thrown out of the wall are tidied;
a4: removing the mould and maintaining; and (3) after the concrete reaches the early strength, performing form stripping treatment, curing the concrete according to the standard requirements at normal temperature, and performing surface treatment to obtain the integrated laminated outer wall of the building bottom reinforcing area.
The device is simple in construction and overall structure, the outer prefabricated wall body can be directly used as an outer formwork through the arrangement of the outer prefabricated wall body, the outer formwork is not required to be additionally disassembled after the construction is completed, the construction process is simple, the limitation of large turnover of the on-site wet operation formwork is solved, the generation of construction waste is reduced, meanwhile, the later construction period can be shortened, the labor is saved, and the on-site installation efficiency is improved; after construction is finished, the whole wall body structure is firm, so that the requirements of building standards can be well met, and meanwhile, the requirements of heat preservation, fire prevention, strength and the like can be ensured; the concrete structure wall body is integrally cast in situ, heat preservation integrated construction is carried out during construction, modular assembly is carried out, site construction is more convenient and safer, the application range is wider, the production and construction steps are simple, and time and labor are saved; the external mold prefabricated wall body mainly adopts a forward forging process in terms of production process, and an insulation board 11, various connecting pieces and connecting devices are paved on a mold table at first, and the prefabricated wall body is formed manually; the production line production beat is easy to control through the optimal design; and the requirements of people are more effectively met.
The above embodiments are not to be taken as limiting the scope of the invention, and any alternatives or modifications to the embodiments of the invention will be apparent to those skilled in the art and fall within the scope of the invention.
The present invention is not described in detail in the present application, and is well known to those skilled in the art.
Claims (2)
1. Building bottom reinforcing area integration coincide outer wall, its characterized in that: the prefabricated wall comprises an external mold prefabricated wall body, a concrete structure wall body and a reinforced grid, wherein the external mold prefabricated wall body comprises a plurality of prefabricated plates which are mutually abutted and matched, each two adjacent prefabricated plates are matched through rabbets arranged at the upper end part and the lower end part of each prefabricated plate, a character code fixedly connected with the prefabricated plates through wire lugs and bolts is respectively arranged at the outer side of each rabbet, and the concrete structure wall body comprises an inner leaf cast-in-situ structure layer, and the inner She Xianjiao structure layer is provided with a reinforced grid; the outer mold prefabricated wall body is fixedly connected with the inner leaf cast-in-situ structural layer through a plurality of anchor rod pulling parts; the middle upper part of the outer mold prefabricated wall body is provided with an inverted cone-shaped connecting device, and the inner end of the inverted cone-shaped connecting device is connected with an inclined strut supported on the floor; the anchor rod pulling component comprises an anchor rod penetrating through the prefabricated wall body of the outer mold and the cast-in-situ structural layer of the inner leaf, angle irons are respectively sleeved at two ends of the anchor rod, and the angle irons are respectively fixed through fastening nuts and gaskets which are matched with the outer side of the anchor rod;
the precast slab comprises an outer leaf plate, and a reinforcing steel mesh is arranged in the outer leaf plate; a heat preservation plate is fixedly connected to the inner side wall of the outer blade plate;
the inverted cone connecting device comprises an inverted cone connecting piece arranged in a hole of the inner leaf cast-in-situ structural layer, the front end of the inverted cone connecting piece extends into the outer leaf plate, and an extension bolt extends into the inner cavity of the front end of the inverted cone connecting piece through a reserved hole of the outer leaf plate and is fastened and screwed with an embedded nut; the rear end of the inverted cone-shaped connecting piece is flush with the inner side wall of the inner She Xianjiao structural layer, the end of a bolt extends into the cavity of the inverted cone-shaped connecting piece and is in fastening screwing connection with a built-in nut, and the inverted cone-shaped connecting piece is connected with the upper end of the diagonal brace through the bolt and the transition piece;
even if water enters the inclined plane of the connecting part under the condition of rainy weather, the tongue-and-groove can flow out to the lower side and the outer side under the action of gravity, so that the risk of cracking the wall body caused by water inflow of joints is reduced, the service life of the whole wall body is ensured, and the waterproof effect is good;
the outer side of the heat-insulating plate is not directly contacted with the outside, but is provided with an outer blade plate, so that the heat-insulating plate plays a role of an outer template when an inner blade cast-in-situ structural layer is poured, and can also meet the supporting strength when the heat-insulating plate is used as the outer template, and the outer blade plate plays roles of protecting and insulating the heat-insulating plate; reinforcing steel mesh piece enhances the strength of the outer leaf plate; the anchor rod pulling component tightens an inner template of the inner leaf cast-in-situ structural layer and the outer mold prefabricated wall body, and is used for fixing the inner template and recycling;
the inverted cone-shaped connecting device, the diagonal brace and the character code are repeatedly recycled;
compared with the construction method of installing the heat preservation layer later, the construction process is reduced, the construction efficiency is improved, the construction period is shortened, and the resource consumption is reduced; the post-pasting heat preservation uses a grade A heat preservation material, and heat preservation integrated construction of the integrated superposition outer wall only needs to use a grade B heat preservation material;
the lower part of the diagonal brace is directly connected to the floor top surface through a connecting bolt for supporting, so that the supporting strength is high; due to the adjusting function of the diagonal bracing during installation, the perpendicularity of the outer template and the inner template can be accurately adjusted according to the construction condition, and when the cast-in-situ structural layer of the inner leaf can be poured after the perpendicularity is adjusted, the stress condition after the later building forming is ensured, and the wall body is prevented from being damaged due to the component force caused by the inclination of the wall body;
the production method of the prefabricated plate comprises the following steps:
s1: and (3) processing a die: cleaning the prefabricated plate mould until no residue or foreign matter exists on the surface, and no cement paste and concrete residue can be left;
s2: installing an insulation board according to the size structure of the mould; during installation, the joint connection is carried out, so that firmness and no slurry leakage are ensured; extruding the polystyrene board after the heat preservation board is 80 mm;
s3: installing a single-layer bidirectional reinforcing steel bar net sheet and a heat preservation connecting piece: firstly, a single-layer bidirectional reinforcing steel bar net sheet is installed and fixed on an insulation board, and then an insulation connecting piece, a limiting drawknot piece and an embedded piece are installed according to design requirements; when the heat-insulating connecting piece is installed, firstly, installing a single-layer bidirectional reinforcing steel bar net piece, wherein the distance between reinforcing steel bars in the reinforcing steel bar net piece is 150mm, and then installing the heat-insulating connecting piece, the limiting drawknot piece and the embedded piece after the single-layer bidirectional reinforcing steel bar net piece is installed;
s4: pouring concrete by adopting an automatic distributing machine to form an outer blade plate, vibrating uniformly, and finishing slurry; before concrete is poured, the precast slab member is subjected to hidden acceptance, and concrete can be poured after the acceptance; the concrete molding adopts an automatic vibrating die table device to vibrate so as to ensure that the concrete is compact in vibration; the concrete is continuously poured, the thickness of the pouring layer is 60mm, and when the mold, the embedded part and the reinforcing mesh are deformed and shifted, reinforcing and correcting measures are timely taken;
s5: curing and demolding to obtain a prefabricated plate, namely the prefabricated plate; after concrete pouring and vibrating are completed, the resting time is 15-20min, the prefabricated part is primarily maintained in a precuring kiln, after the surface moisture of the prefabricated plate is evaporated to dryness, the prefabricated part is transferred to a curing kiln for steam curing, the heating speed is 10-20 ℃/h, the constant temperature is 50-60 ℃, the constant temperature time is 1.5h at 50 ℃, and the cooling speed is 10-20 ℃/h; before the prefabricated precast slab component is disassembled and lifted, the strength of the concrete test block maintained under the same condition is checked, and the disassembly and lifting after the designed disassembly and lifting strength is achieved.
2. The building bottom reinforcement area integrated composite exterior wall of claim 1, wherein: a plurality of limiting drawknot members are arranged in each precast slab, the outer ends of the limiting drawknot members are positioned in the outer leaf plates, and the inner ends of the limiting drawknot members penetrate through the heat insulation plates and extend into the inner She Xianjiao structural layer.
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| CN110500346B (en) * | 2019-09-04 | 2021-06-29 | 芜湖市西贝克机电科技有限公司 | Multipurpose connection angle iron |
| CN110984427B (en) * | 2019-12-23 | 2021-03-19 | 中交第一航务工程局有限公司 | Shear wall construction process based on fully-prefabricated floor slab |
| CN110894739B (en) * | 2019-12-26 | 2024-07-12 | 北京中房智宝科技有限公司 | Structure of reinforced suspension supporting connecting member for grid superposed wall |
| CN113719025A (en) * | 2021-08-20 | 2021-11-30 | 上海建工七建集团有限公司 | External wall template structure and construction method thereof |
| CN114775688B (en) * | 2022-05-26 | 2024-05-03 | 中国建筑第五工程局有限公司 | Construction method of overlapped assembly type subway station with few formwork supports |
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