CN113863542A - Construction device and method for replacing masonry wall with cast-in-place concrete sandwich wall - Google Patents
Construction device and method for replacing masonry wall with cast-in-place concrete sandwich wall Download PDFInfo
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- CN113863542A CN113863542A CN202111184750.5A CN202111184750A CN113863542A CN 113863542 A CN113863542 A CN 113863542A CN 202111184750 A CN202111184750 A CN 202111184750A CN 113863542 A CN113863542 A CN 113863542A
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- 239000004567 concrete Substances 0.000 title claims abstract description 181
- 238000010276 construction Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims description 27
- 238000009413 insulation Methods 0.000 claims abstract description 76
- 229910000831 Steel Inorganic materials 0.000 claims description 197
- 239000010959 steel Substances 0.000 claims description 197
- 239000010410 layer Substances 0.000 claims description 36
- 230000003014 reinforcing effect Effects 0.000 claims description 27
- 238000003466 welding Methods 0.000 claims description 18
- 238000004321 preservation Methods 0.000 claims description 15
- 239000004793 Polystyrene Substances 0.000 claims description 14
- 229920002223 polystyrene Polymers 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 9
- 239000011241 protective layer Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 238000005204 segregation Methods 0.000 claims description 9
- 239000004570 mortar (masonry) Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 3
- 230000000740 bleeding effect Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005056 compaction Methods 0.000 claims description 3
- 238000009749 continuous casting Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000009415 formwork Methods 0.000 claims description 3
- 239000008397 galvanized steel Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000012945 sealing adhesive Substances 0.000 claims description 3
- 239000011376 self-consolidating concrete Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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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
-
- 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
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
- E04C5/04—Mats
-
- 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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
-
- 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
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- 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
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
- E04G21/08—Internal vibrators, e.g. needle vibrators
-
- 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
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G21/122—Machines for joining reinforcing bars
- E04G21/123—Wire twisting tools
-
- 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
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a construction device and a construction method for replacing a masonry wall with a cast-in-place concrete sandwich wall. Has the advantages that: the cast-in-place concrete sandwich wall is poured along with a main structure at one time, the integrity and the stability of a peripheral structure are enhanced for the external wall, the leakage hidden danger of the wall root part of the original masonry wall and the joint part of a wall body and the structural wall is greatly reduced, and the building heat insulation function and the wall enclosure function are integrated due to the built-in heat insulation system.
Description
Technical Field
The invention relates to the technical field of concrete wall construction, in particular to a construction device and a construction method for replacing a masonry wall with a cast-in-place concrete sandwich wall.
Background
The wall body mainly comprises a bearing wall and a non-bearing wall, and the wall body mainly plays a role in enclosing and separating a space. The wall body of the wall bearing structure building integrates bearing and enclosing, the skeleton structure system building wall body has the functions of enclosing and separating space, the wall body has enough strength and stability and has the capabilities of heat preservation, heat insulation, sound insulation, fire prevention and water prevention, the masonry wall is a wall body built by blocks and mortar through a certain building method, and the masonry wall is usually required to be built in the building construction process.
However, the leakage hidden danger that the wall root position of the masonry wall, the wall body and the structure wall handing-over position exist easily when the existing masonry wall is constructed, meanwhile, the masonry wall cannot be built along with the main structure, the construction efficiency of the wall body is low, the whole construction progress is not accelerated, the manual labor intensity of the masonry wall is high when the masonry wall is constructed, and the quality of the masonry wall in the construction process cannot be guaranteed.
Disclosure of Invention
The invention aims to solve the problems and provide a construction device and a construction method for replacing a masonry wall with a cast-in-place concrete sandwich wall.
The invention realizes the purpose through the following technical scheme:
a cast-in-place concrete sandwich wall replaces a masonry wall and a construction device and a method thereof, wherein the cast-in-place concrete sandwich wall is used and comprises a heat preservation layer, inserted wires penetrating through the heat preservation layer, inner steel wire meshes arranged on two side walls of the heat preservation layer, an outer steel wire mesh arranged on one side of the inner steel wire mesh, jackscrews arranged between the outer steel wire mesh and the inner steel wire meshes, jackscrew anti-corrosion ends formed at one ends of the jackscrews and cast-in-place concrete layers poured on two sides of the outer steel wire meshes; the construction method of the cast-in-place concrete sandwich wall comprises the following steps:
step 1: binding of reinforcing steel bars
The binding of the steel bars of the main structure wall meets the design requirement, the emphasis is needed here, the phi 8@200 steel bars are vertically arranged at the joint part of the beam bottom and the sandwich wall, the binding and overlapping length of the steel bars, which penetrate through the main structure beam and the sandwich plate steel bar mesh under the beam, is not less than 300mm, and the length of the steel bars, which extend out of the top surface of the structure beam, is not less than 300mm, and the steel bars are used as steel bar stubble throwing, so that the binding and overlapping with the subsequently installed sandwich plate are convenient;
step 2: cast-in-place concrete sandwich wall installation
(1) The horizontal and vertical transportation of the construction site for welding the steel bar net rack insulation board can adopt a tower crane for hoisting, the sandwich walls are numbered in advance according to the positions of the sandwich walls, and then the sandwich walls are installed in sequence;
(2) the installation of the welded steel bar net rack heat insulation board is carried out in a mode of sealing and connecting in sequence from one to another, the width of a splicing seam between the heat insulation boards is not more than 20mm, the lighter welded steel bar net rack heat insulation board can be directly installed in place in a manual mode, the heavier welded steel bar net rack heat insulation board can be directly installed in place during vertical hoisting, square timbers are additionally arranged on the heat insulation boards after the welded steel bar net rack heat insulation boards are installed in place, then the square timbers are knocked by an iron hammer for fine adjustment, and the steel bar net rack cannot be directly pried or knocked;
(3) after the welded steel bar net rack heat insulation board is installed in place, the verticality of the welded steel bar net rack heat insulation board is measured and corrected, and then a temporary protective frame is built by adopting steel pipes to ensure the stability of the welded steel bar net rack heat insulation board;
(4) after the welded steel bar net rack heat insulation board is installed in place and temporarily fixed, the welded steel bar net rack heat insulation board is immediately bound and fixed with common steel bars of a wall body and a hidden column, so that accidents are prevented;
(5) the connection between the welded steel bar net rack heat insulation plates is carried out by adopting two modes of additional steel bar binding and overlapping welding nets with the same specification according to construction drawings and related drawing set requirements;
(6) after the welded steel bar net rack heat insulation board is installed and fixed and connected with steel bars, laying and fixing of line pipes, box boxes and embedded parts in a wall body can be carried out, in the construction process, as thick electric pipes or other pipelines need to be vertically drilled along the wall or other reasons, when a steel bar welding net needs to be cut off, the steel bar welding net with the same specification or steel bars with the diameter of 6mm are lapped and fixed at the cut-off part after the pipe arrangement is finished, and as a reinforcing measure, the lapping length meets the requirements of relevant specifications, and the binding is firm;
(7) after the welded steel bar net rack heat insulation board is installed, concealed engineering acceptance is conducted on the welded steel bar net rack heat insulation board, common steel bars, pipeline laying, cushion block installation and the like;
(8) when a beam is arranged above a sandwich wall, a vertical additional steel bar needs to be reserved, a phi 8@200 steel bar needs to be arranged at the joint part of the beam bottom and the sandwich wall, the steel bar penetrates through a main structural beam and is bound and lapped with a steel bar mesh of a sandwich plate under the beam by a length not less than 300mm, and extends out of the top surface of the structural beam by a length not less than 300mm, and is used as a steel bar stubble throwing and is bound and lapped with a subsequently installed sandwich plate, so that concrete is convenient to pour and discharge, the steel bar is in contact with the bottom of the structural beam and is reduced by 100mm downwards, in order to ensure that concrete at the root of the sandwich wall is tightly combined with a constructed structural floor slab during pouring, the wall root before the sandwich plate is installed, chiseling is in place according to requirements, and is cleaned, MU10 concrete solid blocks or cement cushion blocks or extruded sheets are adopted at the bottom of the sandwich plate, so that the new and old concrete are tightly combined, and the thickness of the cushion blocks needs to be less than that of polyphenyl plates in the sandwich wall;
(9) the vertical seams between the sandwich plates are additionally lapped with reinforcing meshes at the outer edges of the reinforcing meshes at the two sides of the sandwich plates, and the lapping with the two sandwich plates is not less than 150 mm; when the included angle between the sandwich plate and the sandwich plate is 90 degrees, a lapping angle net is added at the positive and negative angles and is lapped with the two sandwich plates by no less than 150 mm; the joint of the sandwich plate and the structural wall steel bar is additionally provided with a lap flat net, and the lap length of the lap flat net, the sandwich plate steel bar net and the structural wall steel bar is not less than 150 mm; when the sandwich panel and the structural wall form an included angle of 90 degrees, a lapping angle net is added at the male and female angles, and the lapping length of the lapping angle net, the sandwich panel reinforcing steel bar net and the structural wall reinforcing steel bar is not less than 150 mm; when sandwich walls are arranged around (on two sides and at the lower part of) the window opening, the edge of the sandwich plate jointed with the window opening returns 50mm from the edge of the opening to the interior of the sandwich plate, U-shaped steel bar meshes are lapped with the sandwich plate steel bar meshes, the distance between the end parts of the U-shaped steel bar meshes and the edge of the window opening is not less than 10mm, and the lapping length of the U-shaped steel bar meshes and the sandwich plate steel bar meshes is not less than 150 mm;
and step 3: formwork installation
(1) The construction of the template engineering of the cast-in-place concrete sandwich wall is carried out according to the construction process standard of a large template of a common shear wall;
(2) the formed templates should be tightly assembled, slurry leakage cannot occur, and the size and the shape of the component should be ensured;
(3) the bottom of the template is paved with mortar when the template is in place or filled with mortar after the template is in place;
(4) measures for preventing slurry leakage such as filling sponge sealing strips or pasting sealing adhesive tapes and the like are adopted at the splicing seam parts of the templates;
(5) reserving bolt holes as reinforcing holes on the heat insulation plate according to the reinforcing position of the template before mold sealing, reserving the holes according to the size of a reinforcing member, cleaning scraps and garbage of the heat insulation plate, and then installing the template;
and 4, step 4: pouring of concrete
(1) The thickness of the protective layer of the extruded polystyrene board arranged in the concrete sandwich wall is 50mm, self-compacting concrete or fine aggregate concrete with the same label as the main structure wall can be poured with the main structure at one time, the particle size is not more than 1/4 of the thickness of the polystyrene board protective layer, the slump is not less than 220mm, the expansion degree is 600-750mm,
(2) when concrete is poured into the concrete sandwich wall, the mold-entering temperature of the concrete is controlled to be 5-35 ℃, rainfall, snowfall or accumulated water in a template can generate great influence on the aggregate performance of the concrete and even cause concrete segregation, so that the concrete is not suitable for pouring during snowfall and rainfall, the concrete pouring is avoided in high-temperature time, measures such as wind shielding, sun shading and the like are taken before construction operation when water is quickly evaporated,
(3) on the concrete pouring site, a specially-assigned person is arranged to detect the aggregate performance of each concrete truck, the slump and the expansion degree meet the relevant requirements, the concrete without bleeding and segregation can be poured into a mold, when the aggregate performance of the concrete can not meet the requirements, a proper amount of additive with the same components in the mixing proportion can be added into the concrete mixing and transporting truck, the roller is rapidly rotated and stirred to adjust the workability of the common commercial concrete until the performances of the common commercial fine aggregate concrete meet the required standards, the method is adopted to apply and record in advance, the mixing amount of the additive and the stirring time are determined by tests, water is strictly forbidden at any time period and any position in the pouring process,
(4) the related regulations of the concrete configuration of the cast-in-place concrete sandwich wall (building heat preservation system) should meet the requirements of the design rule of the mix proportion of common concrete JGJ55-2011,
(5) the concrete pouring point of the cast-in-place concrete sandwich wall (building heat preservation system) is selected at the cross part of the cross-shaped, T-shaped or L-shaped wall body so as to facilitate the uniform flow of the concrete and the multi-point vibration compaction,
(6) the segregation of the common commercial fine aggregate concrete is mainly related to the feeding mode, the maximum coarse aggregate particle size and the pouring height of the concrete, the pouring height is not more than 5 m when the concrete is poured, when the concrete can not meet the regulation, the buffer measures such as a cylinder string, a chute and the like are adopted, in order to avoid the local blockage caused by the larger impact force, a funnel or a baffle plate is preferably arranged at the upper opening of the template, so that the concrete enters the template at a slower speed,
(7) when the concrete sandwich wall (built-in building heat insulation system) is poured with concrete, the concrete is poured in layers, the height of each layer is not more than 500mm, the interval time between layers does not exceed the initial setting time of the concrete,
(8) the concrete discharging points are distributed and continuously cast, the pushing type continuous casting is preferably adopted at the same casting point, when switching among a plurality of casting points, the secondary layer concrete is cast before the initial setting of the front layer concrete,
(9) because the steel wire mesh of the concrete sandwich wall (the built-in heat insulation system) is dense, a small vibrating bar (30 vibrating bars or smaller type) is adopted for vibration, and the vibration is assisted by modes of hammering by a skin hammer and the like at two sides of the template, when the concrete is partially blocked, the concrete can be inserted and tamped by a twisted steel bar,
(10) the steel wire mesh is used for stopping stubbles between the concrete sandwich wall and the structural wall, so that the condition that non-fine-stone concrete flows into the sandwich wall to cause coarse aggregate to block gaps, and subsequent concrete is difficult to pour, thereby causing cast leakage and cavities is avoided;
and 5: form removal and concrete curing
The key points of attention required for dismantling the wall form where the sandwich wall is located are the same as the key points of attention required for dismantling the main structure wall form, the method can be executed according to a specific engineering form construction scheme, watering maintenance is carried out within 12 hours after the form is dismantled, and the maintenance time is not less than 7 days.
Further, the heat preservation adopts the extruded polystyrene board to make, welds the net certain distance with two-layer reinforcing bar welding net both sides and welds into the rack through the template jackscrew, and the rethread is inserted the silk and is passed the heated board and leave certain length or weld the net welding at steel wire tip and reinforcing bar, constitutes welding reinforcing bar rack heated board.
Furthermore, the inner side steel wire mesh sheets are made of phi 2 steel bars through binding, the inner side steel wire mesh sheets are made of phi 4 steel bars through binding, and the row spacing between the inner side steel wire mesh sheets and the outer side steel wire mesh sheets is 4 cm.
Furthermore, the inserted wires are steel wires with the specification of phi 3mm, two ends of each inserted wire are connected with the inner side steel wire mesh sheets and the outer side steel wire mesh sheets and penetrate through the heat insulation layer, so that the sandwich wall is integrated, and the number of the inserted wires is not less than 10 per square meter.
Further, the jackscrew adopts the steel wire that the specification is phi 3mm, connects inboard wire net piece with outside wire net piece forms the galvanized steel wire of reinforcing bar rack, and one end stretches out return 1mm in outside wire net piece to the template edge, and the other end is level with inboard net piece, the jackscrew with inboard wire net piece and outside wire net piece all welds, and the interval is not more than 200 x 200mm, plays the effect of control protective layer thickness.
Further, the building heat insulation system belongs to a nonstandard part, the specification and the size are customized and produced according to the size of a filler wall and by combining the construction characteristics, wherein for facilitating concrete pouring and blanking, a sandwich plate contacted with the top of a structural beam (plate) is downwards reduced by 100mm, in order to ensure window fixing and sufficient vibration of a lower rod of a vibrating rod in the later period, the sandwich plate contacted with a window opening (two sides of the window opening and the lower part of the window opening) is inwards reduced by 50mm, a U-shaped steel wire mesh is connected with the sandwich plate in an overlapping manner, the overlapping length is not less than 150mm, and the specification of the U-shaped steel wire mesh is phi 4@100 x 100; in addition, in the wall body with the sandwich plate rooted from the structural floor slab, MU10 concrete solid blocks or cement cushion blocks (polystyrene boards can also be used) are applied to the bottom of the sandwich plate and are padded to be 50mm high, so that the new concrete and the old concrete are tightly combined.
The invention has the beneficial effects that:
1. the cast-in-place concrete sandwich wall is poured along with a main structure at one time, the integrity and the stability of a peripheral structure are enhanced for the external wall, the leakage hidden danger of the wall root part of the original masonry wall and the joint part of a wall body and the structural wall is greatly reduced, and the building heat preservation function and the wall enclosure function are integrated due to the built-in heat preservation system;
2. the cast-in-place concrete sandwich wall steel wire mesh frame plate is automatically welded by adopting special mechanical equipment, so that the labor intensity is reduced, the product quality is ensured, the production efficiency is improved, and powerful supply guarantee is provided for large-area popularization and application of the technology.
Drawings
FIG. 1 is a schematic structural view of a cast-in-place concrete sandwich wall in a construction device for replacing a masonry wall with the cast-in-place concrete sandwich wall according to the present invention;
FIG. 2 is a construction flow chart of the construction device for replacing masonry walls with cast-in-place concrete sandwich walls according to the invention.
The reference numerals are explained below:
1. carrying out top thread; 2. an inner steel wire mesh sheet; an outer steel wire mesh sheet; 4. a jackscrew anti-corrosion end; 5. a concrete layer is cast in place; 6. inserting wires; 7. and (7) an insulating layer.
Detailed Description
A cast-in-place concrete sandwich wall replaces the construction equipment and method of the masonry wall, it has used a cast-in-place concrete sandwich wall, this cast-in-place concrete sandwich wall includes the heat insulation layer 7, runs through the wire 6 of the said heat insulation layer 7, set up the inboard wire mesh 2 on both sides wall of the said heat insulation layer 7, set up and have outer wire mesh 3 on one side of the said inboard wire mesh 2, set up the jackscrew 1 between said outer wire mesh 3 and said inboard wire mesh 2, the shaping is in the anticorrosive end 4 of jackscrew of one end of the said jackscrew 1 and pour the cast-in-place concrete layer 5 in both sides of the said outer wire mesh 3; the construction method of the cast-in-place concrete sandwich wall comprises the following steps:
step 1: binding of reinforcing steel bars
The binding of the steel bars of the main structure wall meets the design requirement, the emphasis is needed here, the phi 8@200 steel bars are vertically arranged at the joint part of the beam bottom and the sandwich wall, the binding and overlapping length of the steel bars, which penetrate through the main structure beam and the sandwich plate steel bar mesh under the beam, is not less than 300mm, and the length of the steel bars, which extend out of the top surface of the structure beam, is not less than 300mm, and the steel bars are used as steel bar stubble throwing, so that the binding and overlapping with the subsequently installed sandwich plate are convenient;
step 2: cast-in-place concrete sandwich wall installation
(1) The horizontal and vertical transportation of the construction site for welding the steel bar net rack insulation board can adopt a tower crane for hoisting, the sandwich walls are numbered in advance according to the positions of the sandwich walls, and then the sandwich walls are installed in sequence;
(2) the installation of the welded steel bar net rack heat insulation board is carried out in a mode of sealing and connecting in sequence from one to another, the width of a splicing seam between the heat insulation boards is not more than 20mm, the lighter welded steel bar net rack heat insulation board can be directly installed in place in a manual mode, the heavier welded steel bar net rack heat insulation board can be directly installed in place during vertical hoisting, square timbers are additionally arranged on the heat insulation boards after the welded steel bar net rack heat insulation boards are installed in place, then the square timbers are knocked by an iron hammer for fine adjustment, and the steel bar net rack cannot be directly pried or knocked;
(3) after the welded steel bar net rack heat insulation board is installed in place, the verticality of the welded steel bar net rack heat insulation board is measured and corrected, and then a temporary protective frame is built by adopting steel pipes to ensure the stability of the welded steel bar net rack heat insulation board;
(4) after the welded steel bar net rack heat insulation board is installed in place and temporarily fixed, the welded steel bar net rack heat insulation board is immediately bound and fixed with common steel bars of a wall body and a hidden column, so that accidents are prevented;
(5) the connection between the welded steel bar net rack heat insulation plates is carried out by adopting two modes of additional steel bar binding and overlapping welding nets with the same specification according to construction drawings and related drawing set requirements;
(6) after the welded steel bar net rack heat insulation board is installed and fixed and connected with steel bars, laying and fixing of line pipes, box boxes and embedded parts in a wall body can be carried out, in the construction process, as thick electric pipes or other pipelines need to be vertically drilled along the wall or other reasons, when a steel bar welding net needs to be cut off, the steel bar welding net with the same specification or steel bars with the diameter of 6mm are lapped and fixed at the cut-off part after the pipe arrangement is finished, and as a reinforcing measure, the lapping length meets the requirements of relevant specifications, and the binding is firm;
(7) after the welded steel bar net rack heat insulation board is installed, concealed engineering acceptance is conducted on the welded steel bar net rack heat insulation board, common steel bars, pipeline laying, cushion block installation and the like;
(8) when a beam is arranged above a sandwich wall, a vertical additional steel bar needs to be reserved, a phi 8@200 steel bar needs to be arranged at the joint part of the beam bottom and the sandwich wall, the steel bar penetrates through a main structural beam and is bound and lapped with a steel bar mesh of a sandwich plate under the beam by a length not less than 300mm, and extends out of the top surface of the structural beam by a length not less than 300mm, and is used as a steel bar stubble throwing and is bound and lapped with a subsequently installed sandwich plate, so that concrete is convenient to pour and discharge, the steel bar is in contact with the bottom of the structural beam and is reduced by 100mm downwards, in order to ensure that concrete at the root of the sandwich wall is tightly combined with a constructed structural floor slab during pouring, the wall root before the sandwich plate is installed, chiseling is in place according to requirements, and is cleaned, MU10 concrete solid blocks or cement cushion blocks or extruded sheets are adopted at the bottom of the sandwich plate, so that the new and old concrete are tightly combined, and the thickness of the cushion blocks needs to be less than that of polyphenyl plates in the sandwich wall;
(9) the vertical seams between the sandwich plates are additionally lapped with reinforcing meshes at the outer edges of the reinforcing meshes at the two sides of the sandwich plates, and the lapping with the two sandwich plates is not less than 150 mm; when the included angle between the sandwich plate and the sandwich plate is 90 degrees, a lapping angle net is added at the positive and negative angles and is lapped with the two sandwich plates by no less than 150 mm; the joint of the sandwich plate and the structural wall steel bar is additionally provided with a lap flat net, and the lap length of the lap flat net, the sandwich plate steel bar net and the structural wall steel bar is not less than 150 mm; when the sandwich panel and the structural wall form an included angle of 90 degrees, a lapping angle net is added at the male and female angles, and the lapping length of the lapping angle net, the sandwich panel reinforcing steel bar net and the structural wall reinforcing steel bar is not less than 150 mm; when sandwich walls are arranged on two sides and the lower part around the window opening, the edge of the sandwich plate jointed with the window opening returns 50mm from the edge of the opening to the interior of the sandwich plate, U-shaped steel bar meshes are lapped with the sandwich plate steel bar meshes, the distance between the end parts of the U-shaped steel bar meshes and the edge of the window opening is not less than 10mm, and the lapping length of the U-shaped steel bar meshes and the sandwich plate steel bar meshes is not less than 150 mm;
and step 3: formwork installation
(1) The construction of the template engineering of the cast-in-place concrete sandwich wall is carried out according to the construction process standard of a large template of a common shear wall;
(2) the formed templates should be tightly assembled, slurry leakage cannot occur, and the size and the shape of the component should be ensured;
(3) the bottom of the template is paved with mortar when the template is in place or filled with mortar after the template is in place;
(4) measures for preventing slurry leakage such as filling sponge sealing strips or pasting sealing adhesive tapes and the like are adopted at the splicing seam parts of the templates;
(5) reserving bolt holes as reinforcing holes on the heat insulation plate according to the reinforcing position of the template before mold sealing, reserving the holes according to the size of a reinforcing member, cleaning scraps and garbage of the heat insulation plate, and then installing the template;
and 4, step 4: pouring of concrete
(1) The thickness of the protective layer of the extruded polystyrene board arranged in the concrete sandwich wall is 50mm, self-compacting concrete or fine aggregate concrete with the same label as the main structure wall can be poured with the main structure at one time, the particle size is not more than 1/4 of the thickness of the polystyrene board protective layer, the slump is not less than 220mm, the expansion degree is 600-750mm,
(2) when concrete is poured into the concrete sandwich wall, the mold-entering temperature of the concrete is controlled to be 5-35 ℃, rainfall, snowfall or accumulated water in a template can generate great influence on the aggregate performance of the concrete and even cause concrete segregation, so that the concrete is not suitable for pouring during snowfall and rainfall, the concrete pouring is avoided in high-temperature time, measures such as wind shielding, sun shading and the like are taken before construction operation when water is quickly evaporated,
(3) on the concrete pouring site, a specially-assigned person is arranged to detect the aggregate performance of each concrete truck, the slump and the expansion degree meet the relevant requirements, the concrete without bleeding and segregation can be poured into a mold, when the aggregate performance of the concrete can not meet the requirements, a proper amount of additive with the same components in the mixing proportion can be added into the concrete mixing and transporting truck, the roller is rapidly rotated and stirred to adjust the workability of the common commercial concrete until the performances of the common commercial fine aggregate concrete meet the required standards, the method is adopted to apply and record in advance, the mixing amount of the additive and the stirring time are determined by tests, water is strictly forbidden at any time period and any position in the pouring process,
(4) the related regulations of the concrete configuration of the cast-in-place concrete sandwich wall building thermal insulation system should meet the requirements of 'design rule of common concrete mix proportion' JGJ55-2011,
(5) the concrete pouring point of the cast-in-place concrete sandwich wall building heat insulation system is selected at the cross part of a cross-shaped, T-shaped or L-shaped wall body so as to facilitate the uniform flow of concrete and the multi-point vibration compaction,
(6) the segregation of the common commercial fine aggregate concrete is mainly related to the feeding mode, the maximum coarse aggregate particle size and the pouring height of the concrete, the pouring height is not more than 5 m when the concrete is poured, when the concrete can not meet the regulation, the buffer measures such as a cylinder string, a chute and the like are adopted, in order to avoid the local blockage caused by the larger impact force, a funnel or a baffle plate is preferably arranged at the upper opening of the template, so that the concrete enters the template at a slower speed,
(7) when the concrete is poured in the building heat-insulating system arranged in the concrete sandwich wall, the concrete is poured in layers, the height of each layer is not more than 500mm, the interval time between layers does not exceed the initial setting time of the concrete,
(8) the concrete discharging points are distributed and continuously cast, the pushing type continuous casting is preferably adopted at the same casting point, when switching among a plurality of casting points, the secondary layer concrete is cast before the initial setting of the front layer concrete,
(9) because the steel wire mesh of the built-in heat insulation system of the concrete sandwich wall is dense, a small vibrating rod is adopted to vibrate a 30-vibrator vibrating rod or a smaller type, and the vibration is assisted by modes of hammering by a leather hammer and the like at two sides of a template, when the concrete is partially blocked, the concrete can be inserted and tamped by a twisted steel bar,
(10) the steel wire mesh is used for stopping stubbles between the concrete sandwich wall and the structural wall, so that the condition that non-fine-stone concrete flows into the sandwich wall to cause coarse aggregate to block gaps, and subsequent concrete is difficult to pour, thereby causing cast leakage and cavities is avoided;
and 5: form removal and concrete curing
The key points of attention required for dismantling the wall form where the sandwich wall is located are the same as the key points of attention required for dismantling the main structure wall form, the method can be executed according to a specific engineering form construction scheme, watering maintenance is carried out within 12 hours after the form is dismantled, and the maintenance time is not less than 7 days.
In this embodiment, heat preservation 7 adopts the extruded polystyrene board to make, welds the net certain distance with two-layer reinforcing bar welding net with extruded polystyrene board both sides and welds into the rack through jackscrew 1, and rethread inserted wire 6 passes the heated board and leaves certain length or welds the net welding at steel wire tip and reinforcing bar, constitutes welding reinforcing bar rack heated board.
In this embodiment, the inner side steel wire mesh sheet 2 is made of a phi 2 steel bar through binding, the inner side steel wire mesh sheet 2 is made of a phi 4 steel bar through binding, and the row spacing between the inner side steel wire mesh sheet 2 and the outer side steel wire mesh sheet 3 is 4 cm.
In this embodiment, the inserted wires 6 are steel wires with the specification of phi 3mm, two ends of each inserted wire are connected with the inner side steel wire mesh sheets 2 and the outer side steel wire mesh sheets 3 and penetrate through the heat insulation layer 7, so that the sandwich wall is integrated, and the number of the inserted wires 6 is not less than 10 per square meter.
In this embodiment, jackscrew 1 adopts the steel wire that the specification is phi 3mm, connects inboard wire mesh 2 with outside wire mesh 3 forms the galvanized steel wire of reinforcing bar rack, and one end stretches out return 1mm in outside wire mesh 3 to the template edge, and the other end is leveled with inboard net piece, jackscrew 1 with inboard wire mesh 2 and outside wire mesh 3 all welds, and the interval is not more than 200 x 200mm, plays the effect of control protective layer thickness.
In the embodiment, the building heat insulation system belongs to a non-standard part, the specification and the size are customized and produced according to the size of a filler wall and by combining the construction characteristics, wherein for convenience of concrete pouring and blanking, a sandwich plate in contact with the top of a structural beam slab is downwards reduced by 100mm, in order to ensure window fixing and sufficient vibration of a lower rod of a vibrating rod in the later period, the two sides of a window opening of the sandwich plate in contact with the window opening and the lower part of the window opening are inwards reduced by 50mm, a U-shaped steel wire mesh is connected with the sandwich plate in an overlapping mode, the overlapping length is not less than 150mm, and the specification of the U-shaped steel wire mesh is phi 4@100 x 100; in addition, in the wall body with the sandwich plate rooted from the structural floor slab, the bottom of the sandwich plate can be padded with 50mm high by applying MU10 concrete solid blocks or cement cushion block polystyrene boards, so that the new and old concrete can be tightly combined.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A construction device and method for replacing masonry wall with cast-in-place concrete sandwich wall is characterized in that: the cast-in-place concrete sandwich wall comprises a heat insulation layer (7), insert wires (6) penetrating through the heat insulation layer (7), inner side steel wire meshes (2) arranged on two side walls of the heat insulation layer (7), outer side steel wire meshes (3) arranged on one side of the inner side steel wire meshes (2), jackscrews (1) arranged between the outer side steel wire meshes (3) and the inner side steel wire meshes (2), jackscrew anticorrosion ends (4) formed at one ends of the jackscrews (1) and cast-in-place concrete layers (5) poured on two sides of the outer side steel wire meshes (3); the construction method of the cast-in-place concrete sandwich wall comprises the following steps:
step 1: binding of reinforcing steel bars
The binding of the steel bars of the main structure wall meets the design requirement, the emphasis is needed here, the phi 8@200 steel bars are vertically arranged at the joint part of the beam bottom and the sandwich wall, the binding and overlapping length of the steel bars, which penetrate through the main structure beam and the sandwich plate steel bar mesh under the beam, is not less than 300mm, and the length of the steel bars, which extend out of the top surface of the structure beam, is not less than 300mm, and the steel bars are used as steel bar stubble throwing, so that the binding and overlapping with the subsequently installed sandwich plate are convenient;
step 2: cast-in-place concrete sandwich wall installation
(1) The horizontal and vertical transportation of the construction site for welding the steel bar net rack insulation board can adopt a tower crane for hoisting, the sandwich walls are numbered in advance according to the positions of the sandwich walls, and then the sandwich walls are installed in sequence;
(2) the installation of the welded steel bar net rack heat insulation board is carried out in a mode of sealing and connecting in sequence from one to another, the width of a splicing seam between the heat insulation boards is not more than 20mm, the lighter welded steel bar net rack heat insulation board can be directly installed in place in a manual mode, the heavier welded steel bar net rack heat insulation board can be directly installed in place during vertical hoisting, square timbers are additionally arranged on the heat insulation boards after the welded steel bar net rack heat insulation boards are installed in place, then the square timbers are knocked by an iron hammer for fine adjustment, and the steel bar net rack cannot be directly pried or knocked;
(3) after the welded steel bar net rack heat insulation board is installed in place, the verticality of the welded steel bar net rack heat insulation board is measured and corrected, and then a temporary protective frame is built by adopting steel pipes to ensure the stability of the welded steel bar net rack heat insulation board;
(4) after the welded steel bar net rack heat insulation board is installed in place and temporarily fixed, the welded steel bar net rack heat insulation board is immediately bound and fixed with common steel bars of a wall body and a hidden column, so that accidents are prevented;
(5) the connection between the welded steel bar net rack heat insulation plates is carried out by adopting two modes of additional steel bar binding and overlapping welding nets with the same specification according to construction drawings and related drawing set requirements;
(6) after the welded steel bar net rack heat insulation board is installed and fixed and connected with steel bars, laying and fixing of line pipes, box boxes and embedded parts in a wall body can be carried out, in the construction process, as thick electric pipes or other pipelines need to be vertically drilled along the wall or other reasons, when a steel bar welding net needs to be cut off, the steel bar welding net with the same specification or steel bars with the diameter of 6mm are lapped and fixed at the cut-off part after the pipe arrangement is finished, and as a reinforcing measure, the lapping length meets the requirements of relevant specifications, and the binding is firm;
(7) after the welded steel bar net rack heat insulation board is installed, concealed engineering acceptance is conducted on the welded steel bar net rack heat insulation board, common steel bars, pipeline laying, cushion block installation and the like;
(8) when a beam is arranged above a sandwich wall, a vertical additional steel bar needs to be reserved, a phi 8@200 steel bar needs to be arranged at the joint part of the beam bottom and the sandwich wall, the steel bar penetrates through a main structural beam and is bound and lapped with a steel bar mesh of a sandwich plate under the beam by a length not less than 300mm, and extends out of the top surface of the structural beam by a length not less than 300mm, and is used as a steel bar stubble throwing and is bound and lapped with a subsequently installed sandwich plate, so that concrete is convenient to pour and discharge, the steel bar is in contact with the bottom of the structural beam and is reduced by 100mm downwards, in order to ensure that concrete at the root of the sandwich wall is tightly combined with a constructed structural floor slab during pouring, the wall root before the sandwich plate is installed, chiseling is in place according to requirements, and is cleaned, MU10 concrete solid blocks or cement cushion blocks or extruded sheets are adopted at the bottom of the sandwich plate, so that the new and old concrete are tightly combined, and the thickness of the cushion blocks needs to be less than that of polyphenyl plates in the sandwich wall;
(9) the vertical seams between the sandwich plates are additionally lapped with reinforcing meshes at the outer edges of the reinforcing meshes at the two sides of the sandwich plates, and the lapping with the two sandwich plates is not less than 150 mm; when the included angle between the sandwich plate and the sandwich plate is 90 degrees, a lapping angle net is added at the positive and negative angles and is lapped with the two sandwich plates by no less than 150 mm; the joint of the sandwich plate and the structural wall steel bar is additionally provided with a lap flat net, and the lap length of the lap flat net, the sandwich plate steel bar net and the structural wall steel bar is not less than 150 mm; when the sandwich panel and the structural wall form an included angle of 90 degrees, a lapping angle net is added at the male and female angles, and the lapping length of the lapping angle net, the sandwich panel reinforcing steel bar net and the structural wall reinforcing steel bar is not less than 150 mm; when sandwich walls are arranged around (on two sides and at the lower part of) the window opening, the edge of the sandwich plate jointed with the window opening returns 50mm from the edge of the opening to the interior of the sandwich plate, U-shaped steel bar meshes are lapped with the sandwich plate steel bar meshes, the distance between the end parts of the U-shaped steel bar meshes and the edge of the window opening is not less than 10mm, and the lapping length of the U-shaped steel bar meshes and the sandwich plate steel bar meshes is not less than 150 mm;
and step 3: formwork installation
(1) The construction of the template engineering of the cast-in-place concrete sandwich wall is carried out according to the construction process standard of a large template of a common shear wall;
(2) the formed templates should be tightly assembled, slurry leakage cannot occur, and the size and the shape of the component should be ensured;
(3) the bottom of the template is paved with mortar when the template is in place or filled with mortar after the template is in place;
(4) measures for preventing slurry leakage such as filling sponge sealing strips or pasting sealing adhesive tapes and the like are adopted at the splicing seam parts of the templates;
(5) reserving bolt holes as reinforcing holes on the heat insulation plate according to the reinforcing position of the template before mold sealing, reserving the holes according to the size of a reinforcing member, cleaning scraps and garbage of the heat insulation plate, and then installing the template;
and 4, step 4: pouring of concrete
(1) The thickness of the protective layer of the extruded polystyrene board arranged in the concrete sandwich wall is 50mm, self-compacting concrete or fine aggregate concrete with the same label as the main structure wall can be poured with the main structure at one time, the particle size is not more than 1/4 of the thickness of the polystyrene board protective layer, the slump is not less than 220mm, the expansion degree is 600-750mm,
(2) when concrete is poured into the concrete sandwich wall, the mold-entering temperature of the concrete is controlled to be 5-35 ℃, rainfall, snowfall or accumulated water in a template can generate great influence on the aggregate performance of the concrete and even cause concrete segregation, so that the concrete is not suitable for pouring during snowfall and rainfall, the concrete pouring is avoided in high-temperature time, measures such as wind shielding, sun shading and the like are taken before construction operation when water is quickly evaporated,
(3) on the concrete pouring site, a specially-assigned person is arranged to detect the aggregate performance of each concrete truck, the slump and the expansion degree meet the relevant requirements, the concrete without bleeding and segregation can be poured into a mold, when the aggregate performance of the concrete can not meet the requirements, a proper amount of additive with the same components in the mixing proportion can be added into the concrete mixing and transporting truck, the roller is rapidly rotated and stirred to adjust the workability of the common commercial concrete until the performances of the common commercial fine aggregate concrete meet the required standards, the method is adopted to apply and record in advance, the mixing amount of the additive and the stirring time are determined by tests, water is strictly forbidden at any time period and any position in the pouring process,
(4) the related regulations of the concrete configuration of the cast-in-place concrete sandwich wall (building heat preservation system) should meet the requirements of the design rule of the mix proportion of common concrete JGJ55-2011,
(5) the concrete pouring point of the cast-in-place concrete sandwich wall (building heat preservation system) is selected at the cross part of the cross-shaped, T-shaped or L-shaped wall body so as to facilitate the uniform flow of the concrete and the multi-point vibration compaction,
(6) the segregation of the common commercial fine aggregate concrete is mainly related to the feeding mode, the maximum coarse aggregate particle size and the pouring height of the concrete, the pouring height is not more than 5 m when the concrete is poured, when the concrete can not meet the regulation, the buffer measures such as a cylinder string, a chute and the like are adopted, in order to avoid the local blockage caused by the larger impact force, a funnel or a baffle plate is preferably arranged at the upper opening of the template, so that the concrete enters the template at a slower speed,
(7) when the concrete sandwich wall (built-in building heat insulation system) is poured with concrete, the concrete is poured in layers, the height of each layer is not more than 500mm, the interval time between layers does not exceed the initial setting time of the concrete,
(8) the concrete discharging points are distributed and continuously cast, the pushing type continuous casting is preferably adopted at the same casting point, when switching among a plurality of casting points, the secondary layer concrete is cast before the initial setting of the front layer concrete,
(9) because the steel wire mesh of the concrete sandwich wall (the built-in heat insulation system) is dense, a small vibrating bar (30 vibrating bars or smaller type) is adopted for vibration, and the vibration is assisted by modes of hammering by a skin hammer and the like at two sides of the template, when the concrete is partially blocked, the concrete can be inserted and tamped by a twisted steel bar,
(10) the steel wire mesh is used for stopping stubbles between the concrete sandwich wall and the structural wall, so that the condition that non-fine-stone concrete flows into the sandwich wall to cause coarse aggregate to block gaps, and subsequent concrete is difficult to pour, thereby causing cast leakage and cavities is avoided;
and 5: form removal and concrete curing
The key points of attention required for dismantling the wall form where the sandwich wall is located are the same as the key points of attention required for dismantling the main structure wall form, the method can be executed according to a specific engineering form construction scheme, watering maintenance is carried out within 12 hours after the form is dismantled, and the maintenance time is not less than 7 days.
2. The construction device and method for replacing masonry wall with cast-in-place concrete sandwich wall according to claim 1, characterized in that: the heat preservation layer (7) is made of extruded polystyrene boards, the two sides of the extruded polystyrene boards are welded with two layers of steel bars at certain intervals to form a net rack through a top wire (1), and then the extruded polystyrene boards are inserted into a wire (6) to penetrate through the heat preservation board and leave certain length or be welded with the steel bars at the end parts of the steel wires to form the welded steel bar net rack heat preservation board.
3. The construction device and method for replacing masonry wall with cast-in-place concrete sandwich wall according to claim 1, characterized in that: the steel wire mesh is characterized in that the inner side steel wire mesh (2) is made of phi 2 steel bars through binding, the inner side steel wire mesh (2) is made of phi 4 steel bars through binding, and the row spacing between the inner side steel wire mesh (2) and the outer side steel wire mesh (3) is 4 cm.
4. The construction device and method for replacing masonry wall with cast-in-place concrete sandwich wall according to claim 1, characterized in that: the insert wires (6) are steel wires with the specification of phi 3mm, two ends of the insert wires are connected with the inner side steel wire mesh sheets (2) and the outer side steel wire mesh sheets (3) and communicated with the heat insulation layer (7), so that the sandwich wall is integrated, and the number of the insert wires (6) is not less than 10 square meters.
5. The construction device and method for replacing masonry wall with cast-in-place concrete sandwich wall according to claim 1, characterized in that: jackscrew (1) adopts the steel wire that the specification is phi 3mm, connects inboard wire net piece (2) with outside wire net piece (3) forms the galvanized steel wire of reinforcing bar rack, and one end stretches out return 1mm in outside wire net piece (3) to the template edge, and the other end is leveled with inboard net piece, jackscrew (1) with inboard wire net piece (2) and outside wire net piece (3) are all welded, and the interval is not more than 200mm, plays the effect of control protective layer thickness.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412019A (en) * | 2022-01-12 | 2022-04-29 | 甘肃省建筑科学研究院(集团)有限公司 | Permanent outer formwork for steel wire mesh frame composite rock wool board and construction method |
| CN114776026A (en) * | 2022-06-17 | 2022-07-22 | 中铁九局集团有限公司 | Adjustable binding mechanism for steel bar binding robot |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304953A (en) * | 2011-07-07 | 2012-01-04 | 李富厚 | Sandwich heat insulation reinforced concrete shear wall and construction method thereof |
| CN105780976A (en) * | 2016-03-29 | 2016-07-20 | 北京城建北方建设有限责任公司 | Compound concrete shear wall structure and concrete pouring method thereof |
| KR20180082374A (en) * | 2018-06-27 | 2018-07-18 | 주식회사 케이씨산업 | Pre assemble pc composite mold and method for consructing concrete structure using this same |
| CN110258848A (en) * | 2019-06-24 | 2019-09-20 | 南通大学 | A kind of construction method of building energy conservation CL composite shear wall |
| CN112160468A (en) * | 2020-09-23 | 2021-01-01 | 中国五冶集团有限公司 | Built-in heat-insulation cast-in-place concrete composite shear wall structure and construction method |
-
2021
- 2021-10-12 CN CN202111184750.5A patent/CN113863542A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304953A (en) * | 2011-07-07 | 2012-01-04 | 李富厚 | Sandwich heat insulation reinforced concrete shear wall and construction method thereof |
| CN105780976A (en) * | 2016-03-29 | 2016-07-20 | 北京城建北方建设有限责任公司 | Compound concrete shear wall structure and concrete pouring method thereof |
| KR20180082374A (en) * | 2018-06-27 | 2018-07-18 | 주식회사 케이씨산업 | Pre assemble pc composite mold and method for consructing concrete structure using this same |
| CN110258848A (en) * | 2019-06-24 | 2019-09-20 | 南通大学 | A kind of construction method of building energy conservation CL composite shear wall |
| CN112160468A (en) * | 2020-09-23 | 2021-01-01 | 中国五冶集团有限公司 | Built-in heat-insulation cast-in-place concrete composite shear wall structure and construction method |
Non-Patent Citations (1)
| Title |
|---|
| 砂浆与保温: "CL保温体系施工技巧总结，很有借鉴意义，没有做过的可以提前学习一下", 《微信公众号文章》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412019A (en) * | 2022-01-12 | 2022-04-29 | 甘肃省建筑科学研究院(集团)有限公司 | Permanent outer formwork for steel wire mesh frame composite rock wool board and construction method |
| CN114776026A (en) * | 2022-06-17 | 2022-07-22 | 中铁九局集团有限公司 | Adjustable binding mechanism for steel bar binding robot |
| CN114776026B (en) * | 2022-06-17 | 2022-09-13 | 中铁九局集团有限公司 | Adjustable binding mechanism for steel bar binding robot |
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Application publication date: 20211231 |