CN108789787B - High-efficiency construction method of high-strength assembly type building - Google Patents

High-efficiency construction method of high-strength assembly type building Download PDF

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CN108789787B
CN108789787B CN201810560181.1A CN201810560181A CN108789787B CN 108789787 B CN108789787 B CN 108789787B CN 201810560181 A CN201810560181 A CN 201810560181A CN 108789787 B CN108789787 B CN 108789787B
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hook
steel bars
reinforcing steel
shaped reinforcing
enabling
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CN108789787A (en
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何理礼
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Chongqing Industry Polytechnic College
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Chongqing Industry Polytechnic College
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00Moulds; Cores; Mandrels
    • B28B7/22Moulds for making units for prefabricated buildings, i.e. units each comprising an important section of at least two limiting planes of a room or space, e.g. cells; Moulds for making prefabricated stair units
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02Arrangements 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
    • B28B23/022Means for inserting reinforcing members into the mould or for supporting them in the mould
    • B28B23/024Supporting means
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/06Aluminous cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/90Passive houses; Double facade technology

Abstract

The invention relates to the technical field of assembly type buildings, in particular to a high-efficiency construction method of a high-strength assembly type building, which comprises the steps of firstly processing a steel bar keel, then pouring concrete, bending a first steel bar and a second steel bar oppositely to form acute angles of 30-60 degrees after the concrete is hardened to form a first hook-shaped steel bar and a second hook-shaped steel bar, and welding vertical steel bars at the root of a hook shape respectively; arranging the prefabricated wall blocks on a building, enabling first hook-shaped reinforcing steel bars of adjacent wall blocks to be opposite to second hook-shaped reinforcing steel bars, then enabling the first hook-shaped reinforcing steel bars and the second hook-shaped reinforcing steel bars to be oppositely abutted, enabling free ends of the first hook-shaped reinforcing steel bars and the second hook-shaped reinforcing steel bars to be respectively blocked by vertical reinforcing steel bars, enabling the free ends of the first hook-shaped reinforcing steel bars and the second hook-shaped reinforcing steel bars to pass through the vertical reinforcing steel bars after elastic deformation, enabling the free ends of the first hook-shaped reinforcing steel bars and the second hook-shaped reinforcing steel bars to be non-return by the vertical reinforcing steel bars to form 'mutual' shape matching, and abutting the adjacent wall blocks to be aligned; then pour concrete or fill thermal-insulated heat preservation filler in the recess through the breach on the recess, not only can further strengthen the connection reliability between the wall piece, still effectual isolated high temperature, noise etc. have improved the travelling comfort of building.

Description

High-efficiency construction method of high-strength assembly type building
Technical Field
The invention relates to the technical field of assembly type buildings, in particular to a high-efficiency construction method of a high-strength assembly type building.
Background
The prefabricated building refers to a building assembled on a construction site by using prefabricated components. The building has the advantages of high building speed, less restriction by climatic conditions, labor saving and building quality improvement. Everyone can design oneself and build oneself house, and the wall body is dismantled repeatedly, can reuse can not produce building rubbish because tear the wall open.
However, the existing assembly type building technology has two difficulties, on one hand, the hardening time of the traditional cement is too long, and the traditional cement cannot be matched with the assembly type building with high building speed and low production cost, so that the quick-drying cement is required to be developed and used together with the assembly type building.
On the other hand, because the wall blocks can be disassembled and assembled, the connecting parts of the wall blocks are taken as stress concentration positions, and the connecting structure between the wall blocks plays an extremely important role in improving the safety performance of the building. The wall blocks of the existing fabricated building are usually connected by bolts and screws or cast by concrete into a whole at splicing seams. The schemes are rigid connection, when disasters such as earthquake happen, stress can not be effectively released at the connection part, so that the wall body deforms, and even the wall block is damaged and collapsed in serious cases, so that huge potential safety hazards are buried.
Disclosure of Invention
The invention aims to provide an efficient construction method of a high-strength assembly type building, which not only improves the overall efficiency of prefabrication and assembly of the assembly type building, but also effectively improves the seismic performance of the assembly type building.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows: the high-efficiency construction method of the high-strength assembly type building comprises the steps of assembling prefabricated wall blocks and wall blocks, and specifically comprises the following steps:
processing a steel bar keel for the prefabricated wall block, arranging a first steel bar extending to one side of the wall block in the width direction on the steel bar keel side by side, and extending a plurality of second steel bars to the opposite side by side, wherein the first steel bar and the second steel bar are staggered in height, and the horizontal positions are respectively separated from the center of the thickness of the wall block;
pouring concrete in a mould for supporting the steel bar keel outside, so that the first steel bar and the second steel bar extend out of the hole in the mould, and a groove is preset at the second steel bar, and a gap is arranged at the top end of the groove on the concrete;
after the concrete is hardened, the first reinforcing steel bars and the second reinforcing steel bars are bent oppositely to form acute angles of 30-60 degrees respectively to form first hook-shaped reinforcing steel bars and second hook-shaped reinforcing steel bars, and vertical reinforcing steel bars are welded near hook-shaped roots respectively;
arranging the prefabricated wall blocks on a building, enabling first hook-shaped reinforcing steel bars of adjacent wall blocks to be opposite to second hook-shaped reinforcing steel bars, then enabling the first hook-shaped reinforcing steel bars and the second hook-shaped reinforcing steel bars to be oppositely abutted, enabling free ends of the first hook-shaped reinforcing steel bars and the second hook-shaped reinforcing steel bars to be respectively blocked by vertical reinforcing steel bars, enabling the free ends of the first hook-shaped reinforcing steel bars and the second hook-shaped reinforcing steel bars to pass through the vertical reinforcing steel bars after elastic deformation, enabling the free ends of the first hook-shaped reinforcing steel bars and the second hook-shaped reinforcing steel bars to be non-return by the vertical reinforcing steel bars to form 'mutual' shape matching, and abutting the adjacent wall blocks to be aligned;
concrete or filler is poured into the groove from the notch on the groove for filling.
Preferably, when the mold is supported, the asbestos pad is arranged on the top surface of the groove wall of the groove and the inner upper part of the side wall.
Preferably, when the keel is processed, connecting lugs are respectively arranged at the bottom and the top of the wall block and are respectively welded with the steel bar keel; the outer side of the joint part of the connecting lug plate and the edge of the wall block is pre-processed with a bend protruding towards the surface of the wall block, and the outer side of the connecting lug plate is pre-processed with a connecting hole.
Preferably, when the building is assembled, the adjacent wall blocks are abutted and aligned, and then the wall blocks are preliminarily fixed by the connecting lug plates and the expansion bolts.
When the wall block is assembled in a building, the first hook-shaped reinforcing steel bars and the second hook-shaped reinforcing steel bars on the adjacent wall blocks are staggered in height, but the first hook-shaped reinforcing steel bars and the second hook-shaped reinforcing steel bars form mutual buckling in the grooves due to the existence of the vertical reinforcing steel bars, the mutual buckling cannot be released under the condition that the hooks of the hook-shaped reinforcing steel bars are not damaged, and the mutual buckling is ensured due to the length adaptation of the first hook-shaped reinforcing steel bars and the second hook-shaped reinforcing steel bars. Then concrete is poured or heat insulation filler is filled in the groove through the notch on the groove, so that the connection reliability between the wall blocks can be further enhanced, the mechanical property and the shock resistance can be improved, and the wall blocks and the assembly efficiency are obviously improved. The position that wall piece and constructional column combine, first steel hook-shaped reinforcing bar are deep in the constructional column, and the recess of second hook-shaped reinforcing bar department holds the constructional column reinforcing bar and goes deep, can both pour with the constructional column and be connected, and is also inseparabler with the combination of constructional column, especially adapted cast-in-place of assembled building beam column, the prefabricated technical trend and the thinking of wallboard now.
Drawings
FIG. 1 is a schematic view of a wall block;
FIG. 2 is a schematic top view of the assembled adjacent wall blocks;
figure 3 is a schematic view of a central view of the portion of rebar in the groove of figure 2;
FIG. 4 is a schematic view of the structure of the connecting ear plate;
fig. 5 is a schematic view of the assembly process of the first and second hook-shaped reinforcing bars of fig. 2.
Detailed Description
Referring to fig. 1 to 5, the high-efficiency construction method of the high-strength assembly type building includes the assembly of the prefabricated wall block 10 and the wall block 10, and specifically includes the following steps:
processing a steel bar keel 40 for the prefabricated wall block 10, arranging a first steel bar 20 extending to one side of the width direction of the wall block 10 side by side on the steel bar keel 40, and extending a plurality of second steel bars 30 to the opposite side by side, wherein the positions of the first steel bar 20 and the second steel bar 30 are staggered, and the horizontal positions are respectively separated from the center of the thickness of the wall block 20, so that a hook-shaped opposite structure is formed after subsequent bending;
pouring concrete outside the steel bar keel 40 in a mold, so that the first steel bars 20 and the second steel bars 30 extend out of holes in the mold, and grooves are preset at the second steel bars 30, and gaps 60 are formed at the top ends of the grooves in the concrete;
after the concrete is hardened, the first reinforcing steel bars 20 and the second reinforcing steel bars 30 are respectively bent oppositely to form acute angles of 30-60 degrees to form first hook-shaped reinforcing steel bars 20 and second hook-shaped reinforcing steel bars 30, and vertical reinforcing steel bars 21 and 31 are respectively welded near hook-shaped roots;
arranging the prefabricated wall blocks 10 on a building, enabling the first hook-shaped reinforcing steel bars 20 and the second hook-shaped reinforcing steel bars 30 of the adjacent wall blocks to be opposite and then oppositely closed, enabling the free ends of the first hook-shaped reinforcing steel bars 20 and the second hook-shaped reinforcing steel bars 30 to be respectively blocked by the vertical reinforcing steel bars 31 and 21, enabling the free ends to pass through the vertical reinforcing steel bars 31 and 21 after elastic deformation, enabling the free ends to be non-return by the vertical reinforcing steel bars 31 and 21 to form 'mutual' shape matching, and then closing and aligning the adjacent wall blocks 10; concrete or filler is poured into the groove from the notch 60 on the groove for filling.
Accordingly, in the wall block 10, which is a core component of the resulting structure of the prefabricated building, the wall block 10 has a plate shape, the plate surface of the wall block 10 has a square shape, the wall block 10 is formed by casting concrete, and the reinforcement cage 40 is provided inside the concrete. As shown in fig. 1 and 2, a plurality of first hook-shaped reinforcing bars 20 are extended from the right side of the wall block 10 side by side, a plurality of second hook-shaped reinforcing bars 30 are extended from the left side of the wall block side by side, the first and second hook- shaped reinforcing bars 20 and 30 are respectively welded or tied with the reinforcing steel keels 40 into a whole, and are prefabricated together, the hook-shaped reinforcing bars are straight during normal processing, so that the prefabrication processing is convenient, and the reinforcing bars are bent into the hook-shaped reinforcing bars after the concrete is hardened.
The cantilevered ends of the first and second hook- shaped reinforcing bars 20, 30 are horizontally opposed as shown in fig. 2. The first and second hook- shaped reinforcing bars 20, 30 are staggered in height as shown in fig. 1, so that the first hook-shaped reinforcing bar 20 and the second hook-shaped reinforcing bar 30 are prevented from being directly collided and cannot be assembled in place during assembly. Vertical reinforcing bars 21, 31 extending in the height direction of the wall block are welded to the first and second hook- shaped reinforcing bars 20, 30 near the hook bends, i.e., near the roots of the hooks, respectively. One side of the wall block 10 is provided with a groove along the vertical direction, the first or second hook-shaped reinforcing steel bar 30 is positioned in the groove, and the groove wall at the upper end of the groove is provided with a gap 60. The first and second hook- shaped reinforcing bars 20, 30 of the adjacent wall blocks can form a mutual buckling in the groove, and the mutual buckling is carried out by the vertical reinforcing bars 21, 31.
During assembly, because the first hook-shaped reinforcing steel bar 20 and the second hook-shaped reinforcing steel bar 30 on the adjacent wall blocks 10 are staggered in height and opposite in hook shape, and vertical reinforcing steel bars 21 and 31 exist, when the wall block on the left side moves rightwards as shown in fig. 2, the outer ends of the two hook-shaped reinforcing steel bars 20 and 30 are blocked by the vertical reinforcing steel bars 31 and 21 respectively to be elastically bent, the outer ends of the right hook-shaped reinforcing steel bars 20 and 30 pass through the vertical reinforcing steel bars 31 and 21 to restore the shape, and at this time, when the wall block 10 on the left side is required to be withdrawn leftwards, the vertical reinforcing steel bars 21 and 31 can block the hook-shaped reinforcing steel bars 30 and 20. That is, the first and second hook- shaped reinforcing bars 20 and 30 are engaged with each other in the form of a letter "within the groove, and the engagement is not released without breaking the hook shape of the hook-shaped reinforcing bars 20 and 30. The hook angles of the first and second hook- shaped reinforcing bars 20 and 30 are between 30 ° and 60 °, which is most advantageous for exerting the maximum hook-shaped fastening force.
In practice, the hook-shaped bending angles and the extension lengths of the hook-shaped reinforcing bars of different thicknesses need to be adjusted adaptively to ensure the length adaptation of the first hook-shaped reinforcing bar 20 and the second hook-shaped reinforcing bar 30. The length adaptation is also for example: the hook shape of the two hook-shaped reinforcing steel bars 20 and 30 is symmetrical, and the sum of the extension lengths in the width direction of the wall block is larger than the depth of the groove plus the thickness of at least 2 left and right reinforcing steel bars, so that the requirement can be met.
After the reinforcing steel bar is assembled in place, concrete is poured or heat-insulating filler is filled in the groove through the notch 60 on the groove, so that the connection reliability between the wall blocks 10 can be further enhanced, high temperature, noise and the like can be effectively isolated, and the building comfort is improved. It is preferable that the end surface of the groove and the upper portion of the groove wall be provided with an asbestos pad 50, which prevents damage to the groove wall of the groove during assembly and transportation of the block. The asbestos pad 50 is laid in the die to be prefabricated and machined integrally when the wall block 10 is prefabricated, and machining is more convenient. Specifically, in the process of erecting the mold, the asbestos pads 50 are arranged on the top surfaces of the groove walls of the grooves and the inner upper parts of the side walls, and then concrete is poured to obtain the concrete.
Preferably, wall piece 10 up end and terminal surface limit evenly are provided with perpendicular to the outside auricle 11 of connecting of face respectively down, auricle 11 and the welding of steel reinforcement fossil fragments 40, and auricle 11 and wall piece 10 edge joint portion outside have to the outstanding bending 12 of wall piece face, and auricle board outer end has connecting hole 13. The primary connection of the wall blocks can be realized through the connecting lug plates 11, and particularly, the position of the wall blocks is fixed before concrete or filler is poured in the grooves, so that the wall blocks are prevented from moving in the pouring process. The arrangement of the bend 12 plays a role in strengthening the structure of the connection lug 11, and meanwhile, the lateral force of the wall block 10 during assembly and use can be buffered and deformed by the bend to be absorbed, so that stress concentration on the joint of a screw, a bolt or concrete and the connection lug 11 is avoided.
The processing method comprises the following steps: when the steel bar keel 40 is processed, connecting lugs 11 are respectively arranged at the bottom and the top of the wall block 10 and are respectively welded with the steel bar keel 40; the outer side of the joint part of the connecting lug plate 11 and the edge of the wall block 10 is pre-processed with a bend 12 protruding towards the surface of the wall block, and the outer side of the connecting lug plate is pre-processed with a connecting hole 13. When the building is assembled, the adjacent wall blocks 10 are abutted and aligned, and then the wall blocks are preliminarily fixed by the connecting lug pieces 11 and the expansion bolts.

Claims (3)

1. The high-efficiency construction method of the high-strength assembly type building comprises the assembly of prefabricated wall blocks and wall blocks, and is characterized in that: the method comprises the following steps:
processing a steel bar keel for the prefabricated wall block, arranging a first steel bar which extends to one side edge in the width direction of the wall block side by side on the steel bar keel, and extending a plurality of second steel bars to the opposite side edge side by side, wherein the first steel bar and the second steel bar are staggered in height, and the horizontal positions are respectively separated from the center of the thickness of the wall block;
supporting a mould, pouring concrete to enable the first steel bar and the second steel bar to extend out of the hole in the mould, presetting a groove at the second steel bar, and forming a notch at the top end of the groove on the concrete;
after the concrete is hardened, the first reinforcing steel bars and the second reinforcing steel bars are bent oppositely to form acute angles of 30-60 degrees respectively to form first hook-shaped reinforcing steel bars and second hook-shaped reinforcing steel bars, and vertical reinforcing steel bars are welded near hook-shaped roots respectively;
arranging the prefabricated wall blocks on a building, enabling first hook-shaped reinforcing steel bars of adjacent wall blocks to be opposite to second hook-shaped reinforcing steel bars, and then enabling the first hook-shaped reinforcing steel bars and the second hook-shaped reinforcing steel bars to be opposite and abutted, enabling free ends of the first hook-shaped reinforcing steel bars and the second hook-shaped reinforcing steel bars to be respectively blocked by the vertical reinforcing steel bars and elastically deformed to pass through the vertical reinforcing steel bars, enabling the free ends to recover the appearance after passing through the vertical reinforcing steel bars, enabling the free ends to be blocked by the vertical reinforcing steel bars to form 'mutual' shape matching, and enabling the vertical reinforcing steel bars to block the hook-shaped reinforcing steel bars from exiting; then, the adjacent wall blocks are abutted and aligned;
pouring concrete or filling heat insulation filler into the groove from the notch on the groove;
when the steel bar keel is processed, connecting lug pieces which extend outwards and are vertical to the surface of the wall block are respectively arranged at the bottom and the top of the wall block and are respectively welded with the steel bar keel; the outer side of the joint part of the connecting lug plate and the edge of the wall block is pre-processed with a bend protruding towards the surface of the wall block, and the outer side of the connecting lug plate is pre-processed with a connecting hole; when the wall block is assembled on a building, after adjacent wall blocks are abutted and aligned, the wall blocks are preliminarily fixed by the connecting lug plates and the expansion bolts.
2. The efficient construction method of a high strength fabricated building according to claim 1, wherein: when a mould is supported, the asbestos pad is arranged on the top surface of the groove wall of the groove and the inner upper part of the side wall.
3. The efficient construction method of a high strength fabricated building according to claim 1, wherein: the hook angle of the first and second hook-shaped reinforcing bars is 40-50 deg.
CN201810560181.1A 2018-06-03 2018-06-03 High-efficiency construction method of high-strength assembly type building Active CN108789787B (en)

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CN106013811A (en) * 2016-05-13 2016-10-12 李藏柱 Mounting method of prefabricated building

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