CN116411674B - Construction method of precast slab combined with cast-in-situ - Google Patents
Construction method of precast slab combined with cast-in-situ Download PDFInfo
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- CN116411674B CN116411674B CN202310687050.0A CN202310687050A CN116411674B CN 116411674 B CN116411674 B CN 116411674B CN 202310687050 A CN202310687050 A CN 202310687050A CN 116411674 B CN116411674 B CN 116411674B
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- 238000011065 in-situ storage Methods 0.000 title claims abstract description 32
- 238000010276 construction Methods 0.000 title claims abstract description 16
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 239000012774 insulation material Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 abstract description 12
- 230000006835 compression Effects 0.000 abstract description 9
- 238000007906 compression Methods 0.000 abstract description 9
- 238000009413 insulation Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/06—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres reinforced
-
- 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
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
- E04B1/6108—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
- E04B1/612—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces
-
- 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
- E04B1/82—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 sound only
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/049—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres completely or partially of insulating material, e.g. cellular concrete or foamed plaster
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Building Environments (AREA)
Abstract
The invention relates to the technical field of building engineering, in particular to a construction method of a prefabricated slab combined with cast-in-situ, which comprises the steps of arranging the prefabricated slab, wherein a first channel, a second channel, a third channel and a fourth channel are formed in the prefabricated slab, the first channel is arc-shaped, the middle of the first channel is high, the two ends of the first channel are low, and the first channel and the second channel are horizontally arranged in the prefabricated slab in a staggered manner in a cross shape; the third channel is vertically arranged and communicated with the first channel and the second channel; the fourth channel is positioned below the first channel and the second channel; extending reinforcing steel bars into the first channel and the second channel for arrangement; pouring concrete into the first channel, the second channel and the third channel, and vibrating and exhausting through the third channel after the pouring is finished; according to the invention, the arc-shaped first channel is matched with the reinforcing steel bars, so that an arch bridge-like effect is formed after concrete is cast in situ, and the bearing and compression resistance properties are improved; and the arc first channel cooperates with the third channel, so that the concrete can be discharged through vibrating in the middle of the precast slab by the gas which is not easy to be discharged.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a construction method of a prefabricated plate combined with cast-in-situ.
Background
The prefabricated slab is a floor slab used in early building, namely a module or a plate used in engineering, and is produced and processed into a concrete prefabricated part in a prefabricated field and directly transported to a construction site for installation, so that the prefabricated slab is called as a prefabricated slab.
However, in the prior art, the prefabricated panels, including hollow prefabricated panels, have the problems of poor sound insulation, large gaps, limited water seepage, bearing capacity and tensile and compression resistance, so that the market scale is gradually reduced, and the prefabricated panels are cast-in-place (cast-in-place) strength, but the convenience is still undoubted; therefore, there is a need for a method of combining precast slabs with cast-in-place to overcome the above problems while ensuring efficiency.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the construction method of the prefabricated plate combined with cast-in-situ is provided, which overcomes the defects of the prefabricated plate and ensures convenience.
In order to solve the technical problems, the invention adopts the following technical scheme:
a construction method of a precast slab combined with cast-in-situ comprises
Arranging prefabricated plates, arranging a plurality of prefabricated plates on a bracket or a structure, wherein a first channel, a second channel, a third channel and a fourth channel are arranged on the prefabricated plates, the first channel and the second channel are all multiple, the first channel is arc-shaped, the middle of the first channel is high, the two ends of the first channel are low, and the first channel and the second channel are horizontally arranged in the prefabricated plates in a staggered mode; the height difference between the lowest position and the highest position of the first channel does not exceed the radius of the first channel; the third channel is vertically arranged on the precast slab at the highest position of the first channel and is communicated with the first channel and the second channel; the fourth channel is positioned below the first channel and the second channel, and is a channel which is communicated from front to back and/or from left to right;
pouring concrete or filling sound insulation materials into the fourth channel; if a plurality of prefabricated plates are arranged, adjacent fourth channels are communicated with each other, and edges of the fourth channels communicated with the outside are blocked; if the concrete is poured into the cavity, vibrating and exhausting;
after the reinforcing steel bars extend into the first channel and the second channel of the precast slab to be arranged, the ports of the first channel and the second channel are plugged, and the diameter of the reinforcing steel bars is smaller than or equal to the radius of the first channel;
and pouring concrete into the first channel, the second channel and the third channel, and vibrating and exhausting through the third channel after the pouring is finished.
Preferably, the reinforcing steel bar passes through the rear part of the precast slab and is exposed outside the precast slab;
the support or the structure is provided with a prestress anchor, and the steel bars exposed outside the precast slab are connected with the prestress anchor.
Preferably, the two sides of the prefabricated plate taking the first channel as the length direction are respectively provided with an arc-shaped groove body, and the radian of the arc-shaped groove body is the same as that of the first channel.
Preferably, the two sides of the precast slab with the first channel as the length direction are respectively provided with a cutting groove, the cutting grooves are communicated with the arc-shaped groove body, the top of each cutting groove is aligned with the top of the precast slab, the bottom of each cutting groove is aligned with the top of the fourth channel, the steel bars are arranged in the arc-shaped groove body, and the two ends of the arc-shaped groove body and the two ends of each cutting groove are plugged when in-situ.
Preferably, the third channels are multiple, and the multiple third channels are vertically arranged at the junction of the first channel and the second channel.
Preferably, when in construction, concrete is firstly poured into the fourth channel or a sound insulation material is filled, if the concrete is poured, the concrete is poured into the first channel, the second channel and the third channel after the concrete is solidified; if the sound insulation material is filled, concrete is poured into the first channel, the second channel and the third channel, and the sound insulation material is filled after the concrete is solidified.
Preferably, the second channel is a horizontal channel, when the precast slab is arranged, the precast slab stretches into the second channel through at least three columns to be hoisted and arranged, the columns are taken out after hoisting is completed, and one column is located in the middle or near the middle of the second channel.
Preferably, the cylinder surface has a flexible layer.
Preferably, the inner surfaces of the first, second, third and fourth channels are roughened surfaces.
Preferably, the prefabricated plate edges corresponding to the fourth channels are polished.
The invention has the beneficial effects that: through the arc-shaped first channel, the height difference between the lowest position and the highest position is not more than the radius of the first channel, the diameter of the reinforcing steel bar is smaller than or equal to the radius of the first channel, the reinforcing steel bars corresponding to the first channel and the second channel can be ensured to horizontally pass through, the arrangement of the reinforcing steel bars is carried out, meanwhile, the prefabricated plates are fixed, then the first channel, the second channel, the third channel or the fourth channel is cast in situ, particularly, the fourth channel is subjected to vibration and exhaust when concrete is poured into the fourth channel, and the gap between the prefabricated plates can enter the outside or the first channel, the second channel and the third channel, or the fourth channel is filled with sound insulation materials, so that the integration of the fourth channel of the prefabricated plates can be realized, and the sound insulation and seepage prevention effects are ensured; meanwhile, the reinforcing steel bars are added with the cast-in-situ effect, so that the mechanical property of the precast slab can be further improved, and the compression and tension resistance effects are ensured; because the two ends of the precast slab are generally positioned on the fulcrums, the middle pressure is high, the steel bars are matched with the arc-shaped first channel, the effect similar to an arch bridge is formed after concrete is cast-in-situ, the defect that the compression channel of the precast slab generates cracks due to overlarge middle stress in the prior art is overcome, and the bearing and compression resistance are improved; the arc-shaped first channel is matched with the third channel, so that gas which is not easy to exhaust from the middle of the precast slab can be exhausted through vibrating, and meanwhile, the gas can be directly vibrated through the third channel, so that the assembly efficiency is greatly improved; and the efficiency can be greatly improved by combining the precast slab with cast-in-situ, so that energy conservation and environmental protection are realized.
Drawings
FIG. 1 is a view showing a prefabricated panel splicing process of a prefabricated panel combined with cast-in-situ according to an embodiment of the present invention;
FIG. 2 is a side view of a prefabricated panel according to a construction method of a prefabricated panel combined with cast-in-place according to an embodiment of the present invention;
description of the reference numerals: 1. a prefabricated plate; 2. a first channel; 3. a second channel; 4. a third channel; 5. a fourth channel; 6. reinforcing steel bars; 7. an arc-shaped groove body; 8. and (5) cutting.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 and 2, a construction method of a prefabricated slab 1 combined with cast-in-situ comprises
The prefabricated plates 1 are arranged, a plurality of prefabricated plates 1 are arranged on a bracket or a structure, a first channel 2, a second channel 3, a third channel 4 and a fourth channel 5 are arranged on the prefabricated plates 1, the first channel 2 and the second channel 3 are all provided with a plurality of channels, the first channel 2 is in an arc shape with high middle and low two ends, and the first channel 2 and the second channel 3 are horizontally arranged in the prefabricated plates 1 in a staggered mode; the height difference between the lowest position and the highest position of the first channel 2 does not exceed the radius of the first channel 2; the third channel 4 is vertically arranged on the precast slab 1 at the highest position of the first channel 2 and is communicated with the first channel 2 and the second channel 3; the fourth channel 5 is positioned below the first channel 2 and the second channel 3, and the fourth channel 5 is a front-back and/or left-right through channel;
pouring concrete or filling sound insulation material into the fourth channel 5; if a plurality of prefabricated plates 1 are arranged, the adjacent fourth channels 5 are communicated with each other, and the edges of the fourth channels 5 communicated with the outside are blocked; if the concrete is poured into the cavity, vibrating and exhausting;
the method comprises the steps that after reinforcing steel bars 6 extend into a first channel 2 and a second channel 3 of a precast slab 1 to be arranged, ports of the first channel 2 and the second channel 3 are plugged, and the diameter of the reinforcing steel bars 6 is smaller than or equal to the radius of the first channel 2;
concrete is poured into the first channel 2, the second channel 3 and the third channel 4, and vibrating and exhausting is carried out through the third channel 4 after the pouring is finished.
From the above description, it can be seen that, through the arc-shaped first channel 2, the combination of the height difference between the lowest position and the highest position not exceeding the radius of the first channel 2 and the diameter of the reinforcing steel bar 6 being smaller than or equal to the radius of the first channel 2, it can be ensured that the reinforcing steel bars 6 corresponding to the first and second channels 3 horizontally pass through, the arrangement of the reinforcing steel bars 6 is performed while the prefabricated plate 1 is fixed, then the first channel 2, the second channel 3, the third channel 4 or the fourth channel 5 is cast in place, especially the fourth channel 5, the concrete is poured into the fourth channel 5 to perform vibrating exhaust, and the air can enter the outside through the gaps between the prefabricated plates 1 or the inside of the first channel 2, the second channel 3 and the third channel 4, or the sound insulation material is filled in the fourth channel 5, so that the integration of the fourth channel 5 of the prefabricated plate 1 can be realized, and the sound insulation and seepage prevention effects are ensured; meanwhile, the reinforcing steel bars 6 have the cast-in-situ effect, so that the mechanical property of the precast slab 1 can be further improved, and the compression and tension resistance effects are ensured; because the two ends of the precast slab 1 are generally positioned on the fulcra, the middle pressure is high, the steel bars 6 are matched with the arc-shaped first channel 2, the effect similar to an arch bridge is formed after concrete is cast-in-situ, the defect that the compression channel of the precast slab 1 generates cracks due to overlarge middle stress in the prior art is overcome, and the bearing and compression resistance are improved; the arc-shaped first channel 2 is matched with the third channel 4, so that concrete can be discharged through vibration in the middle of the precast slab 1, and meanwhile, the concrete can be directly vibrated through the third channel 4, so that the assembly efficiency is greatly improved; and the efficiency can be greatly improved by combining the precast slab 1 with cast-in-situ, so that energy conservation and environmental protection are realized.
Further, the steel bars 6 are exposed outside the precast slabs 1 after passing through the precast slabs 1;
the support or the structure is provided with a prestress anchor, and the steel bars 6 exposed outside the precast slab 1 are connected with the prestress anchor.
From the above description, it can be known that the prestress can be applied to the concrete formed by the first, second and third channels 4 of the precast slab 1 through the prestress anchorage, so as to further improve the mechanical properties of the precast slab 1 and the cast-in-situ formed structure, and overcome the problems of insufficient bearing and compression resistance of the conventional precast slab 1.
Further, the two sides of the prefabricated plate 1 with the first channel 2 as the length direction are respectively provided with an arc-shaped groove body 7, and the radian of the arc-shaped groove body 7 is the same as that of the first channel 2.
As is apparent from the above description, by the arrangement of the arc-shaped grooves, structural consistency in the same direction can be ensured.
Further, the two side surfaces of the precast slab 1 with the first channel 2 as the length direction are respectively provided with a cutting groove 8, the cutting grooves 8 are communicated with the arc-shaped groove body 7, the top of each cutting groove 8 is aligned with the top of the precast slab 1, the bottom of each cutting groove 8 is aligned with the top of the fourth channel 5, the steel bars 6 are arranged in the arc-shaped groove body 7, and both ends of the arc-shaped groove body 7 and the cutting grooves 8 are plugged when cast-in-situ.
As is apparent from the above description, by the structure of being narrow at the upper part and wide at the lower part, a space can be left between the prefabricated panels 1, and it is convenient to bind the reinforcing bars 6 through the space at the upper part of the sides between the prefabricated panels 1 when the reinforcing bars 6 are installed; and the grooving 8 can facilitate the fourth channel 5 to be cast-in-situ or filled.
Further, the number of the third channels 4 is plural, and the number of the third channels 4 is vertically arranged at the junction of the first channel 2 and the second channel 3.
From the above description, through the arrangement of the plurality of third channels 4, the crossed binding of the reinforcing steel bars 6 can be realized, and the overall performance is improved.
Further, during construction, firstly, concrete is poured into the fourth channel 5 or a sound insulation material is filled, if the concrete is poured, the concrete is poured into the first channel 2, the second channel 3 and the third channel 4 after the concrete is solidified; if the sound insulation material is filled, concrete is poured into the first channel 2, the second channel 3 and the third channel 4, and the sound insulation material is refilled after the concrete is solidified.
As can be seen from the above description, by pouring the fourth channel 5 and then performing the first channel 2, the second channel 3, and the third channel 4, deformation of the fourth channel 5 caused by excessive weight of the prefabricated panel 1 is avoided; if the sound insulation material is filled, the sound insulation material is mostly foam, and the supporting capacity is poor, so that the concrete in the first channel 2, the second channel 3 and the third channel 4 is molded to form a fixed structure and then filled, the filling effect can be ensured, and the problem that the weight change is caused by the prior filling so that the foam deformation causes the general sound insulation effect is avoided.
Further, the second channel 3 is a horizontal channel, when the precast slab 1 is arranged, at least three columns extend into the second channel 3 for hoisting and arranging, after hoisting is completed, the columns are taken out, and one column is positioned in the middle or near the middle of the second channel 3.
From the above description, more than three columns extend into the second channel 3 to realize uniform stress, and as the first channel 2 is arc-shaped, the structural strength before being formed is not high enough, so that one main body is filled into the middle or the second channel 3 close to the middle, and the structure is ensured not to be damaged due to hoisting; meanwhile, the problem that in the prior art, only one channel is arranged in one direction, and in the technical scheme, the first channel 2 is stressed and deformed is solved.
Further, the surface of the column body is provided with a flexible layer.
From the above description, it is known that the flexible layer can increase the contact surface and increase the stress surface to avoid the fine cracks caused by local stress of the hard column surface to the irregular concrete.
Further, the inner surfaces of the first channel 2, the second channel 3, the third channel 4 and the fourth channel 5 are rough surfaces.
From the above description, it is clear that by having a rough inner surface, it is possible to have sufficient friction after the cast-in-place concrete has been formed, and that the surface is not displaced relatively by a smooth interface when vibrations occur.
Further, the edge of the prefabricated plate 1 corresponding to the fourth channel 5 is polished.
As is apparent from the above description, alignment and installation between different prefabricated panels 1 can be facilitated and gaps between two can be reduced by the polishing process.
Example 1
A construction method of a precast slab 1 combined with cast-in-situ comprises
Step 1, arranging prefabricated plates 1, arranging a plurality of prefabricated plates 1 on a bracket or a structure, wherein a first channel 2, a second channel 3, a third channel 4 and a fourth channel 5 are arranged on the prefabricated plates 1, the first channel 2 and the second channel 3 are all multiple, the first channel 2 is arc-shaped, the middle of the first channel is high, the two ends of the first channel are low, and the first channel 2 and the second channel 3 are horizontally arranged in the prefabricated plates 1 in a staggered mode in a groined shape; the height difference between the lowest position and the highest position of the first channel 2 does not exceed the radius of the first channel 2; the third channel 4 is vertically arranged on the precast slab 1 at the highest position of the first channel 2 and is communicated with the first channel 2 and the second channel 3; the fourth channel 5 is positioned below the first channel 2 and the second channel 3, and the fourth channel 5 is a front-back and/or left-right through channel;
the second channel 3 is a horizontal channel, and when the precast slab 1 is arranged, the precast slab is stretched into the second channel 3 through at least three columns to be hoisted and arranged, and after hoisting is completed, the columns are taken out, wherein one column is positioned in the middle or near the middle of the second channel 3.
The cylinder surface has a flexible layer.
The inner surfaces of the first channel 2, the second channel 3, the third channel 4 and the fourth channel 5 are rough surfaces.
And polishing the edge of the prefabricated plate 1 corresponding to the fourth channel 5.
The number of the third channels 4 is plural, and the plurality of the third channels 4 are vertically arranged at the junction of the first channel 2 and the second channel 3.
Step 2, firstly pouring concrete into the fourth channel 5 during construction; if a plurality of prefabricated plates 1 are arranged, the adjacent fourth channels 5 are communicated with each other, and the edges of the fourth channels 5 communicated with the outside are blocked; if the concrete is poured into the cavity, vibrating and exhausting;
step 3, after the concrete in the fourth channel 5 is solidified, extending the reinforcing steel bars 6 into the first channel 2 and the second channel 3 of the precast slab 1 for arrangement, and then plugging the ports of the first channel 2 and the second channel 3 (the plugging mode is that the reinforcing steel bars 6 are provided with sleeve locking nuts of the reinforcing steel bars 6 and the flange/wood board mode for plugging, and the plugging modes of the grooving 8 and the arc-shaped groove 7 are the same), wherein the diameter of the reinforcing steel bars 6 is smaller than or equal to the radius of the first channel 2;
the steel bars 6 are exposed outside the precast slab 1 after passing through the precast slab 1;
the support or the structure is provided with a prestress anchor, and the steel bars 6 exposed outside the precast slab 1 are connected with the prestress anchor.
The prefabricated plate 1 with the first channel 2 as the length direction is provided with arc-shaped groove bodies 7 on two side surfaces respectively, and the radian of the arc-shaped groove bodies 7 is the same as that of the first channel 2.
The two sides of the precast slab 1 taking the first channel 2 as the length direction are respectively provided with a cutting groove 8, the cutting grooves 8 are communicated with the arc-shaped groove body 7, the top of each cutting groove 8 is aligned with the top of the precast slab 1, the bottom of each cutting groove 8 is aligned with the top of the fourth channel 5, the steel bars 6 are also arranged in the arc-shaped groove body 7 when being arranged, and the two ends of the arc-shaped groove body 7 and the cutting grooves 8 are plugged when being cast in situ.
And 4, pouring concrete into the first channel 2, the second channel 3, the third channel 4, the arc-shaped groove body 7 and the cutting groove 8, and vibrating and exhausting through the third channel 4 and the cutting groove 8 after pouring.
Example 2
A construction method of a precast slab 1 combined with cast-in-situ comprises
Step 1, arranging prefabricated plates 1, arranging a plurality of prefabricated plates 1 on a bracket or a structure, wherein a first channel 2, a second channel 3, a third channel 4 and a fourth channel 5 are arranged on the prefabricated plates 1, the first channel 2 and the second channel 3 are all multiple, the first channel 2 is arc-shaped, the middle of the first channel is high, the two ends of the first channel are low, and the first channel 2 and the second channel 3 are horizontally arranged in the prefabricated plates 1 in a staggered mode in a groined shape; the height difference between the lowest position and the highest position of the first channel 2 does not exceed the radius of the first channel 2; the third channel 4 is vertically arranged on the precast slab 1 at the highest position of the first channel 2 and is communicated with the first channel 2 and the second channel 3; the fourth channel 5 is positioned below the first channel 2 and the second channel 3, and the fourth channel 5 is a front-back and/or left-right through channel;
the second channel 3 is a horizontal channel, and when the precast slab 1 is arranged, the precast slab is stretched into the second channel 3 through at least three columns to be hoisted and arranged, and after hoisting is completed, the columns are taken out, wherein one column is positioned in the middle or near the middle of the second channel 3.
The cylinder surface has a flexible layer.
The inner surfaces of the first channel 2, the second channel 3, the third channel 4 and the fourth channel 5 are rough surfaces.
And polishing the edge of the prefabricated plate 1 corresponding to the fourth channel 5.
The number of the third channels 4 is plural, and the plurality of the third channels 4 are vertically arranged at the junction of the first channel 2 and the second channel 3.
Step 2, after the first channel 2 and the second channel 3 of the precast slab 1 extend into the steel bars 6 to be arranged, ports of the first channel 2 and the second channel 3 are blocked (the blocking mode is that a steel bar 6 sleeve locking nut and a flange/wood plate mode are arranged on the steel bars 6 to be blocked, and the blocking modes of the grooving 8 and the arc-shaped groove body 7 are the same), wherein the diameter of the steel bars 6 is smaller than or equal to the radius of the first channel 2;
the steel bars 6 are exposed outside the precast slab 1 after passing through the precast slab 1;
the support or the structure is provided with a prestress anchor, and the steel bars 6 exposed outside the precast slab 1 are connected with the prestress anchor.
The prefabricated plate 1 with the first channel 2 as the length direction is provided with arc-shaped groove bodies 7 on two side surfaces respectively, and the radian of the arc-shaped groove bodies 7 is the same as that of the first channel 2.
The two sides of the precast slab 1 taking the first channel 2 as the length direction are respectively provided with a cutting groove 8, the cutting grooves 8 are communicated with the arc-shaped groove body 7, the top of each cutting groove 8 is aligned with the top of the precast slab 1, the bottom of each cutting groove 8 is aligned with the top of the fourth channel 5, the steel bars 6 are also arranged in the arc-shaped groove body 7 when being arranged, and the two ends of the arc-shaped groove body 7 and the cutting grooves 8 are plugged when being cast in situ.
And 3, pouring concrete into the first channel 2, the second channel 3, the third channel 4, the arc-shaped groove body 7 and the cutting groove 8, and vibrating and exhausting through the third channel 4 and the cutting groove 8 after pouring.
And 4, filling a sound insulation material into the fourth channel 5.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (10)
1. A construction method of a precast slab combined with cast-in-situ is characterized by comprising the following steps of
Arranging prefabricated plates, arranging a plurality of prefabricated plates on a bracket or a structure, wherein a first channel, a second channel, a third channel and a fourth channel are arranged on the prefabricated plates, the first channel and the second channel are all multiple, the first channel is arc-shaped, the middle of the first channel is high, the two ends of the first channel are low, and the first channel and the second channel are horizontally arranged in the prefabricated plates in a staggered mode; the height difference between the lowest position and the highest position of the first channel does not exceed the radius of the first channel; the third channel is vertically arranged on the precast slab at the highest position of the first channel and is communicated with the first channel and the second channel; the fourth channel is positioned below the first channel and the second channel, and is a channel which is communicated from front to back and/or from left to right;
pouring concrete or filling sound insulation materials into the fourth channel; if a plurality of prefabricated plates are arranged, adjacent fourth channels are communicated with each other, and edges of the fourth channels communicated with the outside are blocked; if the concrete is poured into the cavity, vibrating and exhausting;
after the reinforcing steel bars extend into the first channel and the second channel of the precast slab to be arranged, the ports of the first channel and the second channel are plugged, and the diameter of the reinforcing steel bars is smaller than or equal to the radius of the first channel;
and pouring concrete into the first channel, the second channel and the third channel, and vibrating and exhausting through the third channel after the pouring is finished.
2. The method for constructing a prefabricated slab in combination with cast-in-situ as claimed in claim 1, wherein the rear portion of the reinforcing steel bar passing through the prefabricated slab is exposed outside the prefabricated slab;
the support or the structure is provided with a prestress anchor, and the steel bars exposed outside the precast slab are connected with the prestress anchor.
3. The method for constructing a prefabricated slab in combination with cast-in-situ as claimed in claim 1, wherein the two sides of the prefabricated slab in the length direction of the first channel are respectively provided with an arc-shaped groove, and the arc of the arc-shaped groove is identical to the arc of the first channel.
4. The method for constructing a prefabricated slab combined with cast-in-situ according to claim 3, wherein the two sides of the prefabricated slab which takes the first channel as the length direction are respectively provided with a cutting groove, the cutting grooves are communicated with the arc-shaped groove body, the top of each cutting groove is aligned with the top of the prefabricated slab, the bottom of each cutting groove is aligned with the top of the fourth channel, the steel bars are arranged in the arc-shaped groove body, and both ends of the arc-shaped groove body and the cutting grooves are blocked when cast-in-situ.
5. The method of claim 1, wherein the third channels are provided in plurality and the third channels are vertically provided at the junction of the first channel and the second channel.
6. The method for constructing a prefabricated slab in combination with cast-in-situ as set forth in claim 1, wherein concrete is poured into the fourth passage or a sound insulation material is filled into the fourth passage during construction, and if concrete is poured into the fourth passage, concrete is poured into the first passage, the second passage and the third passage after the concrete is solidified; if the sound insulation material is filled, concrete is poured into the first channel, the second channel and the third channel, and the sound insulation material is filled after the concrete is solidified.
7. The method for constructing a prefabricated slab in combination with cast-in-situ as claimed in claim 1, wherein the second channel is a horizontal channel, and the prefabricated slab is arranged by extending at least three columns into the second channel for hoisting, and taking out the columns after hoisting, wherein one column is positioned in the middle or near the middle of the second channel.
8. The method of constructing a prefabricated panel in combination with cast-in-place as defined in claim 7 wherein the surface of the column has a flexible layer.
9. The method of constructing a prefabricated slab in combination with cast-in-place as claimed in claim 8, wherein the inner surfaces of the first, second, third and fourth passages are roughened surfaces.
10. The method for constructing a prefabricated slab in combination with cast-in-situ as claimed in claim 1, wherein the prefabricated slab edges corresponding to the fourth channels are polished.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203429845U (en) * | 2013-06-28 | 2014-02-12 | 湖北弘毅建筑装饰工程有限公司 | Cellular ribbed frame composite floor slab |
| CN203977888U (en) * | 2014-07-24 | 2014-12-03 | 中国建筑西南设计研究院有限公司 | Prefabricated orifice plate reinforcement node structure |
| CN205663075U (en) * | 2016-06-02 | 2016-10-26 | 吉林建筑大学 | Precast concrete coincide floor |
| CN106088642A (en) * | 2016-06-13 | 2016-11-09 | 苏州市房屋安全鉴定管理处 | Bending-resistant reinforcing structure of prefabricated hollow floor slab and construction method thereof |
| CN106555453A (en) * | 2017-02-04 | 2017-04-05 | 赤峰市建筑科学研究院有限公司 | A kind of prefabricated overlapped hollow plate of prestressing force and its construction method |
| CN216840141U (en) * | 2021-12-21 | 2022-06-28 | 中建科技(济南)有限公司 | Shaped steel concrete reinforcing band of roof beam assembly exempts from |
| CN217630744U (en) * | 2022-07-13 | 2022-10-21 | 江苏顺为绿色建筑科学研究院有限公司 | Hollow superimposed sheet in precast concrete three-dimensional hole |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2618817C1 (en) * | 2016-05-30 | 2017-05-11 | Александр Александрович Титов | Method of erecting framework for structures |
-
2023
- 2023-06-12 CN CN202310687050.0A patent/CN116411674B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203429845U (en) * | 2013-06-28 | 2014-02-12 | 湖北弘毅建筑装饰工程有限公司 | Cellular ribbed frame composite floor slab |
| CN203977888U (en) * | 2014-07-24 | 2014-12-03 | 中国建筑西南设计研究院有限公司 | Prefabricated orifice plate reinforcement node structure |
| CN205663075U (en) * | 2016-06-02 | 2016-10-26 | 吉林建筑大学 | Precast concrete coincide floor |
| CN106088642A (en) * | 2016-06-13 | 2016-11-09 | 苏州市房屋安全鉴定管理处 | Bending-resistant reinforcing structure of prefabricated hollow floor slab and construction method thereof |
| CN106555453A (en) * | 2017-02-04 | 2017-04-05 | 赤峰市建筑科学研究院有限公司 | A kind of prefabricated overlapped hollow plate of prestressing force and its construction method |
| CN216840141U (en) * | 2021-12-21 | 2022-06-28 | 中建科技(济南)有限公司 | Shaped steel concrete reinforcing band of roof beam assembly exempts from |
| CN217630744U (en) * | 2022-07-13 | 2022-10-21 | 江苏顺为绿色建筑科学研究院有限公司 | Hollow superimposed sheet in precast concrete three-dimensional hole |
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| CN116411674A (en) | 2023-07-11 |
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