CN107724678B - Thermal insulation precast slab connecting node structure and thermal insulation precast slab connecting node construction method - Google Patents
Thermal insulation precast slab connecting node structure and thermal insulation precast slab connecting node construction method Download PDFInfo
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- CN107724678B CN107724678B CN201711002905.2A CN201711002905A CN107724678B CN 107724678 B CN107724678 B CN 107724678B CN 201711002905 A CN201711002905 A CN 201711002905A CN 107724678 B CN107724678 B CN 107724678B
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- 238000010276 construction Methods 0.000 title claims abstract description 13
- 238000009413 insulation Methods 0.000 title claims description 37
- 238000004321 preservation Methods 0.000 claims abstract description 88
- 239000004567 concrete Substances 0.000 claims abstract description 36
- 238000011065 in-situ storage Methods 0.000 claims abstract description 34
- 238000005266 casting Methods 0.000 claims description 23
- 238000009415 formwork Methods 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims 3
- 230000000903 blocking effect Effects 0.000 claims 2
- 230000002787 reinforcement Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 11
- 238000010008 shearing Methods 0.000 description 11
- 238000004134 energy conservation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005187 foaming Methods 0.000 description 6
- 238000009435 building construction Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000011178 precast concrete Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
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- 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
- E04G17/0655—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts
- E04G17/0658—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts remaining completely or partially embedded in the cast material
-
- 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
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/90—Passive houses; Double facade technology
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Building Environments (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a connection node structure of a heat-insulating precast slab and a construction method of the connection node of the heat-insulating precast slab, wherein the structure comprises the following steps: the first heat preservation prefabricated slab comprises a first outer blade and a first inner blade, and the first outer blade forms a first extension part; the second heat preservation prefabricated slab comprises a second outer leaf plate and a second inner leaf plate, and the second outer leaf plate forms a second extension part; the inner template is connected with the first inner blade plate and the second inner blade plate, a cast-in-situ space in which concrete is poured is formed among the inner template, the first inner blade plate and the second inner blade plate, and a splicing seam is formed between the second extension part and the first extension part; the outer template is connected with the first extension part and the second extension part; the pull rod assembly comprises a first pull rod and a second pull rod, wherein the first pull rod is poured into concrete, the second pull rod penetrates through the splicing seam, the first pull rod is detachably connected with the second pull rod through a connecting sleeve, the first pull rod is tied to the outer die plate, and the second pull rod is tied to the inner die plate. The invention solves the problem that the traditional template reinforcement mode is unfavorable for the heat preservation of the outer wall of the passive building.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a heat-preservation prefabricated plate connecting node structure and a heat-preservation prefabricated plate connecting node construction method.
Background
The traditional wall form reinforcement adopts the form reinforcement before the node pouring of the pull screw, and the passive building has higher heat preservation requirement, and a great amount of wall penetrating reinforcement modes of the pull screw are adopted to have certain influence on the heat preservation performance of the wall, so the traditional form reinforcement mode can not meet the energy conservation requirement of the passive building.
Disclosure of Invention
In order to overcome the defects existing in the prior art, a heat-preservation prefabricated plate connecting node structure and a heat-preservation prefabricated plate connecting node construction method are provided at present, so that the problem that the traditional template reinforcement mode is not beneficial to heat preservation of the outer wall of a passive building is solved.
In order to achieve the above object, there is provided a thermal insulation prefabricated panel connection node structure, comprising:
the first heat preservation prefabricated plate comprises a first outer blade plate and a first inner blade plate overlapped with the first outer blade plate, and the first outer blade plate extends along the plate surface direction to form a first extension part;
the second heat preservation prefabricated board comprises a second outer blade and a second inner blade overlapped with the second outer blade, and the second outer blade extends along the board surface direction to form a second extension part;
the inner template is connected to the outer sides of the first inner blade plate and the second inner blade plate, a cast-in-situ space is formed among the inner template, the first inner blade plate and the second inner blade plate, concrete is poured in the cast-in-situ space, and a splicing seam is formed between the second extension part and the first extension part;
the outer template is arranged along the splicing seam and connected to the outer sides of the first extension part and the second extension part;
the tie rod assembly comprises a first tie rod and a second tie rod, wherein the first tie rod is poured in concrete, the second tie rod penetrates through the splice joint, the first tie rod is detachably connected with the second tie rod through a connecting sleeve, the first tie rod is tied to the outer die plate, and the second tie rod is tied to the inner die plate.
Further, the first inner blade plate and the second inner blade plate are respectively embedded with a first embedded sleeve, a plurality of first connecting rods are assembled on the inner die plate, and the first connecting rods are detachably connected with the first embedded sleeve in the first inner blade plate and the second inner blade plate respectively.
Further, second embedded sleeves are embedded in the first extending part and the second extending part, a plurality of second connecting rods are assembled on the inner formwork, the second connecting rods are respectively connected to the second embedded sleeves in the first extending part and the second extending part, and the second connecting rods are poured in the concrete.
Further, the inner sides of the first extending part and the second extending part are attached with a plugging belt for plugging between the first extending part and the second extending part.
Further, a rough surface is formed on one side of the first inner blade close to the cast-in-situ space and one side of the second inner blade close to the cast-in-situ space respectively.
Further, the side surface of the first inner blade facing the second inner blade and the side surface of the second inner blade facing the first inner blade are respectively concave inwards to form a plurality of shearing resistant grooves, and the shearing resistant grooves are arranged at intervals along the vertical direction.
The invention provides a construction method of a connection node of a heat-insulating precast slab based on the connection node structure of the heat-insulating precast slab, which comprises the following steps:
installing a first heat preservation prefabricated plate and a second heat preservation prefabricated plate, so that a splice joint is formed between a first extension part of the first heat preservation prefabricated plate and a second extension part of the second heat preservation prefabricated plate;
connecting an inner template to the outer sides of a first inner blade plate and a second inner blade plate, so that a cast-in-situ space is formed among the inner template, the first inner blade plate and the second inner blade plate;
arranging an outer template along the splicing seam and connecting the outer template to the outer sides of the first extension part and the second extension part;
the pull rod assembly is tied between the outer die plate and the inner die plate, so that a first pull rod of the pull rod assembly penetrates through the splicing seam and is tied to the outer die plate, and a second pull rod of the pull rod assembly penetrates through the cast-in-situ space and is tied to the inner die plate;
pouring concrete in the cast-in-place space so that the second pull rod is poured in the concrete;
removing the inner and outer templates;
and removing the connecting sleeve and the first pull rod on the second pull rod.
Further, the step of connecting the inner mold plate to the outer sides of the first inner blade plate and the second inner blade plate further includes:
assembling a plurality of first connecting rods on the inner template;
first embedded sleeves are respectively embedded in the first inner blade plate and the second inner blade plate, and a plurality of first connecting rods are respectively connected with the first embedded sleeves in the first inner blade plate and the second inner blade plate.
Further, the step of connecting the outer form to the outside of the first extension and the second extension further includes:
assembling a plurality of second connecting rods on the inner formwork;
the first extension part and the second extension part are embedded with second embedded sleeves, and the second connecting rods are respectively connected with the second embedded sleeves in the first extension part and the second extension part.
Further, the step of tying the tie bar assembly between the outer and inner forms includes:
a pull rod assembly is tied between the outer template and the inner template;
attaching a plugging band to the inner sides of the first extension part and the second extension part, so that the plugging band plugs between the first extension part and the second extension part.
The invention has the beneficial effects that the first pull rod and the second pull rod which are arranged in a segmented way are connected through the connecting sleeve to form the pull rod assembly, and the pull rod assembly is tied to the inner and outer templates for casting the cast-in-place of the casting nodes. Further, in order to improve the air tightness and the heat preservation of the passive outer wall, the first pull rod and the connecting sleeve are removed after pouring, so that the pull rod assembly penetrates through the passive building heat preservation prefabricated plate, the influence of wall perforation on the heat preservation energy conservation of the passive building is reduced, and the heat preservation of the passive building is ensured.
Drawings
FIG. 1 is a schematic diagram of a connection node structure of a thermal insulation precast slab according to the present invention.
FIG. 2 is a schematic diagram of a pull rod assembly of the insulation precast slab connection node structure of the present invention.
Fig. 3 is a schematic view of a first end column casting node of the insulation precast slab connection node structure of the present invention.
Fig. 4 is a schematic diagram of a second end post casting node of the insulation precast slab connection node structure of the present invention.
Fig. 5 is a schematic view of a corner casting node of the connection node structure of the insulation precast slab.
Fig. 6 is a schematic diagram of a T-shaped casting node constructed by connecting nodes of the insulation precast slabs of the present invention.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention.
On the premise of inheriting the traditional construction technology, the traditional construction method is innovated, main building components are subjected to standardized production line production in factories, then splicing and assembling are carried out on site, main contradictions of building construction are concentrated on the connection among the prefabricated components, especially the connection of vertical bearing components, such as the horizontal and vertical connection of shear walls, and the main contradictions of building construction are focused on the construction of the assembled integral building. For example, the prefabricated concrete sandwich wall board is used for the outer wall of the passive building, the prefabricated concrete sandwich wall board components are assembled on site, the connection part adopts a cast-in-situ mode to realize the integrity of the building, and the construction efficiency of the passive building is greatly improved.
The prefabricated concrete sandwich wall board (also called as prefabricated sandwich heat-insulating wall board or sandwich wall board) is an important prefabricated component integrating the functions of bearing, enclosing, heat insulation, water resistance, fire resistance and the like, and is formed into an assembled integral house by a local cast-in-situ connection mode.
The prefabricated concrete sandwich wallboard comprises an inner leaf plate, a heat preservation layer and an outer leaf plate which are sequentially overlapped. The inner leaf plate and the outer leaf plate are concrete plates. The inner leaf plate, the heat preservation layer and the outer leaf plate are formed at one time and are connected through reliable connecting pieces to form a whole, external wall heat preservation is not needed, the heat preservation layer and the external facing are same in service life with the structure, and maintenance is hardly needed.
Referring to fig. 1 to 6, the present invention provides a thermal insulation prefabricated panel connection node structure including a first thermal insulation prefabricated panel 1, a second thermal insulation prefabricated panel 2, an outer formwork 4, an inner formwork 5, and a tie rod assembly 6. The first heat preservation prefabricated slab 1 and the second heat preservation prefabricated slab 2 are precast concrete sandwich wall boards. The first heat preservation prefabricated slab 1 comprises a first outer blade 12 and a first inner blade 11 overlapped with the first outer blade 12, and the first outer blade 12 extends out of the first extension part along the plate surface direction. The second heat preservation prefabricated slab 2 is aligned to one side of the first heat preservation prefabricated slab 1. The second insulation precast slab 2 includes a second outer leaf 22 and a second inner leaf 21 overlapped with the second outer leaf 22. The second outer louver 22 extends in the plate surface direction to form a second extension portion. And a pouring node is formed between the second heat preservation prefabricated slab 2 and the first heat preservation prefabricated slab 1. The casting nodes shown in fig. 1 are in-line casting nodes, the casting nodes shown in fig. 3 are first end column casting nodes, the casting nodes shown in fig. 4 are second end column casting nodes, the casting nodes shown in fig. 5 are corner casting nodes, and the casting nodes shown in fig. 6 are T-shaped casting nodes.
The inner die plate 5 is connected to the outer sides of the first inner louver 11 and the second inner louver 21. And a cast-in-situ space is formed among the inner template 5, the first inner blade plate 11 and the second inner blade plate 21, and concrete 3 is poured in the cast-in-situ space. A splice seam is formed between the second extension and the first extension.
The outer form 4 is disposed along the splice seam and is connected to the outside of the first and second extensions.
The tie rod assembly 6 is tied between the outer die plate 4 and the inner die plate 5. The tie rod assembly 6 includes a first tie rod 61 penetrating through the splice and tied to the outer form 4, a second tie rod 62 poured in concrete and tied to the inner form 5, and a connection sleeve 63 detachably connected between the first and second tie rods 61 and 62. The first and second tie rods 61, 62 are threaded tie rods or lead screws, and the connecting sleeve 63 is a threaded straight sleeve. The first and second tie rods 61 and 62 are respectively screw-coupled to both ends of the connection sleeve 63.
After the cast-in-place space concrete 3 is hardened, the inner formwork 5 and the outer formwork 4 can be removed. When the inner and outer formworks are removed, the first pull rod 61 and the connecting sleeve 63 are removed from the second pull rod 62, and the splice joint is filled with plugging materials to improve the air tightness and the heat preservation of the outer wall of the passive building.
The first pull rod and the second pull rod which are arranged in a segmented mode are connected through the connecting sleeve to form the pull rod assembly, and the pull rod assembly is tied to the inner template and the outer template in a pulling mode to cast the pouring node in situ. Further, in order to improve the air tightness and the heat preservation of the passive outer wall, the first pull rod and the connecting sleeve are removed after pouring, so that the pull rod assembly penetrates through the passive building heat preservation prefabricated plate, the influence of wall perforation on the heat preservation energy conservation of the passive building is reduced, and the heat preservation of the passive building is ensured.
As shown in fig. 1, the first heat preservation prefabricated panel 1 includes a first outer panel 12 and a first inner panel 11 connected to the first outer panel 12. The side of the first outer blade 12 facing the first inner blade 11 is provided with an insulation layer; the second insulation precast slab 2 includes a second outer deck 22 and a second inner deck 21 connected to the second outer deck 22. The side of the second outer leaf 22 facing the second inner leaf 21 is provided with a heat insulating layer.
The splice joint is filled with a plugging material (the plugging material is not shown in the drawings) after the first tie rod 61 is removed. The plugging material filled in the splice joint is foaming glue. The foaming adhesive is one with foaming and adhering properties and is used mainly in filling, sealing and adhering side seams, expansion joints and holes of door and window. It is a polyurethane elastic sealing foaming material which is solidified by moisture. The foaming glue is prepared by filling polyurethane prepolymer, foaming agent, catalyst, crosslinking agent and the like into a high-pressure resistant iron tank and filling gases such as propane and the like. After the first pull rod 61 and the connecting sleeve 63 are removed, plugging materials are filled in the splice, so that wall perforations originally formed by the damage of the pull rod assembly on the outer wall of the passive building are plugged by the plugging materials to form wall perforations of the partition, the influence of the wall perforations on the heat preservation and energy conservation of the passive building is reduced, and the heat preservation of the passive building is ensured.
Fig. 2 shows a schematic view of a pull rod assembly 6, which is a two-stage screw, the pull rod assembly 6 comprising a first pull rod 61, a second pull rod 62 and a connecting sleeve 63. In the present embodiment, the first and second tie rods 61, 62 are M12mm×1.75mm pair wire rods. The connection sleeve 63 is a straight threaded sleeve having an internal thread, and first ends of the first and second tie rods 61 and 62 are connected to the connection sleeve 63, respectively. The outer template is provided with a first mounting hole for the first pull rod to pass through, and the inner template is provided with a second mounting hole for the second pull rod to pass through. The second end of the first pull rod penetrates through the first mounting hole, and the second end of the second pull rod penetrates through the second mounting hole. The second ends of the first pull rod and the second pull rod are respectively connected with a first limiting piece in a threaded mode. The first limiting parts at the second ends of the first pull rod and the second pull rod respectively lean against the inner die plate and the outer die plate.
As a preferred embodiment, the first pre-embedded sleeves 71 are respectively pre-embedded in the first inner blade 11 and the second inner blade 12, and the inner mold plate 5 is provided with a plurality of first connecting rods 72, and the plurality of first connecting rods 72 are respectively detachably connected to the first pre-embedded sleeves 71 in the first inner blade 11 and the second inner blade 12. The first connecting rod 72 is a threaded rod. The first pre-buried sleeve 71 is a threaded sleeve with one end closed and one end open. The opening end of the first pre-buried sleeve 71 faces the outer side of the inner blade. The first end of the first connecting rod 72 is inserted on the inner die plate 5, the first end of the first connecting rod 72 is in threaded connection with a second limiting piece, and the second limiting piece abuts against the outer side of the inner die plate 5. The second end of the first connecting rod 72 has external threads that mate with internal threads in the first pre-buried sleeve 71. The second end of the first connecting rod 72 is screwed to the first pre-buried sleeve 71. When the precast concrete sandwich panel is produced in a factory, the first embedded sleeve 71 is embedded in the concrete inner leaf plate in advance. The inner die plate 5 is mounted to the outer sides of the first inner louver 11 and the second inner louver 12 by first connecting rods 72 at both sides thereof. The first embedded sleeve arranged in the inner blade plate does not penetrate through the whole inner blade plate, so that the heat insulation performance of the passive building is not damaged.
Further, in order to make the inner form more firmly mounted on the first inner blade and the second inner blade, a second pre-buried sleeve (not shown in fig. 1) is pre-buried in one side of the first extension portion of the first outer blade and the second extension portion of the second outer blade, which is close to the inner blade, the second pre-buried sleeve has a closed end and an open end, and the open end of the second pre-buried sleeve faces the direction of the inner blade. The second embedded sleeve is provided with an internal thread. The inner formwork is detachably provided with a plurality of second connecting rods, and the second connecting rods are poured in the concrete and are respectively connected with the second embedded sleeves in the first extending part and the second extending part. The second connecting rod is a threaded rod with external threads matched with the internal threads of the second embedded sleeve, and the first end of the second connecting rod is in threaded connection with the second embedded sleeve. The second end of the second connecting rod is inserted on the inner die plate and is in threaded connection with a third limiting piece, and the third limiting piece abuts against the outer side of the inner die plate. The first limiting piece, the second limiting piece and the third limiting piece are nuts, mountain-shaped cards or butterfly cards.
According to the prefabricated concrete sandwich heat-insulating wallboard, the pouring nodes are optimized, the first embedded sleeve and the second embedded sleeve are arranged on the prefabricated concrete sandwich wallboard of the prefabricated building to reinforce the front node template, so that the influence of the traditional opposite-pull screw on the heat-insulating performance of the passive building in a large area is avoided, and the construction quality is ensured.
As shown in fig. 1, in order to avoid the first tie rod and the connecting sleeve being detached from the second tie rod after the concrete 3 is poured into the splice, a sealing strip 9 is attached to the inner sides (the side facing the inner leaf) of the first extension and the second extension. The occluding tape 9 is used to occlude between the first and second extensions. The plugging band 9 is a fiber band such as a carbon fiber band or a ceramic fiber band.
As a preferred embodiment, in order to improve the firmness of the whole cast by the cast-in-place node of the first heat preservation prefabricated slab and the second heat preservation prefabricated slab, a rough surface is formed on one side of the first inner blade plate 11 close to the cast-in-place space and one side of the second inner blade plate 21 close to the cast-in-place space respectively. The first heat preservation prefabricated plate and the second heat preservation prefabricated plate are washed and roughened in the production process of a factory, and when the first heat preservation prefabricated plate and the second heat preservation prefabricated plate are produced by the factory, the section of the inner leaf plate is washed until the rough surface of sand stone is exposed by adopting a high-pressure water gun during initial setting and demolding.
As a preferred embodiment, in order to improve the overall firmness and shearing resistance of the cast-in-place joints of the first heat preservation prefabricated slab and the second heat preservation prefabricated slab after casting, the side surface of the first inner blade plate 11 facing the second inner blade plate 21 and the side surface of the second inner blade plate 21 facing the first inner blade plate 11 are respectively concave inwards to form a plurality of shearing resistant grooves, and the shearing resistant grooves are arranged at intervals along the height direction of the prefabricated heat preservation slab. After the cast-in-situ node of the first heat preservation prefabricated slab and the second heat preservation prefabricated slab is poured, the concrete in the cast-in-situ space is filled in the shearing resistant groove and forms an inserting part, and the inserting part is matched with the shearing resistant groove so that the overall firmness and the shearing resistance of the cast-in-situ node are improved. The shearing resistant groove is a trapezoid groove, and the area of one side of the shearing resistant groove, which is close to the cast-in-situ space, is larger than the area of one side of the shearing resistant groove, which is far away from the cast-in-situ space. The shape of the insertion part is a quadrangular frustum pyramid.
Fig. 3 is a schematic view of a connection node structure of an insulation precast slab according to the present invention at a first end column casting node, and mainly shows a use manner of the pull rod assembly. One end of the first heat preservation prefabricated slab 1 is cast in-situ to form a first end column, and the first heat preservation prefabricated slab 1 comprises a first outer blade plate 12 and a first inner blade plate 11 connected to the first outer blade plate 12. The first outer blade 12 extends out of the first extension part, the first extension part is L-shaped, and a cast-in-place space for pouring the first end post is formed between the first extension part and the first inner blade 11. The first extension portion is formed with a splice seam through which the pull rod assembly 6 is threaded. The first end of the first inner blade plate is embedded with a third embedded sleeve. The pull assembly 6 includes a first pull rod 61, a second pull rod 62, and a connecting sleeve 63 connected between the first pull rod 61 and the second pull rod 62. The drawknot component 6 is arranged in the splicing seam and the cast-in-situ space in a penetrating way and is connected with the third embedded sleeve. The drawknot assembly 6 is drawknot between the first extension and the first inner leaf 11. An inner mold plate 5 is installed at the inner side of the first heat-preserving prefabricated panel 1. The first outer blade 12 is embedded with a second embedded sleeve 81, and the inner template 5 is connected to the second embedded sleeve 81 through a second connecting rod 82 to fix the inner template 5. After the cast-in-place space poured concrete 3 is hardened, the inner formwork 5, the first pull rod 61 and the connecting sleeve 63 can be removed, the second pull rod 62 is poured into the concrete, and finally the splice joint is filled with plugging materials.
Fig. 4 is a schematic diagram of a connection node structure of an insulation prefabricated slab of the invention at a pouring node of a second end column, and mainly shows a use mode of the second embedded sleeve and the second connecting rod. One end of the first heat preservation prefabricated slab 1 is cast in-situ to form a second end column, and the first heat preservation prefabricated slab 1 comprises a first outer blade plate 12 and a first inner blade plate 11 connected to the first outer blade plate 12. The first outer leaf 12 extends out of the first extension. An inner mold plate B is installed at the inner side of the first heat-preserving prefabricated panel 1. The inner die plate B is C-shaped and is disposed outside the first inner die plate 11. And a cast-in-situ space for casting the second end column is formed among the inner template B, the first outer blade 12 and the first inner template 11. A second embedded sleeve 81 is embedded in the side of the first extension part of the first outer blade 12 facing the first inner blade 11. The inner form 5 is connected to the second pre-buried sleeve 81 through the second connection rod 82 to fix the inner form 5. The second end post avoids the traditional opposite-pulling screw rod to penetrate through the first outer blade plate through the second embedded sleeve, and damages the heat insulation property of the wall body, so that the heat insulation energy conservation property of the passive building is ensured.
Fig. 5 is a schematic view of a corner casting node of the connection node structure of the insulation precast slab according to the present invention, and mainly shows a use manner of the pull rod assembly. The first heat preservation prefabricated slab 1 and the second heat preservation prefabricated slab 2 are vertically arranged to form a corner. And a cast-in-situ space for corner casting is formed between the first heat preservation prefabricated plate 1 and the second heat preservation prefabricated plate 2. The first heat preservation prefabricated panel 1 includes a first outer louver 12 and a first inner louver 11 connected to the first outer louver 12. The first outer leaf 12 extends out of the first extension. The second insulation precast slab 2 includes a second outer deck 22 and a second inner deck 21 connected to the second outer deck 22. The second outer leaf 22 extends out of the second extension. The second extension part is L-shaped, and a cast-in-situ space for pouring the first end column is formed between the second extension part and the first inner blade plate 11. A splice seam is formed between the first extension and the second extension for the pull rod assembly 6 to pass through. The pull assembly 6 includes a first pull rod 61, a second pull rod 62, and a connecting sleeve 63 connected between the first pull rod 61 and the second pull rod 62. An inner mold plate 5 is installed on the inner side of the first heat preservation prefabricated slab 1, the inner mold plate 5 is positioned on the first extension part, and the end part of the inner mold plate 5 abuts against the outer side of the second inner leaf plate 21. The first inner leaf 11 is embedded with a first embedded sleeve 71, and the inner template 5 is connected to the first embedded sleeve 71 through a first connecting rod 72 to fix the inner template 5. The outer sides of the first extension and the second extension are attached with an outer form 4. The pull rod assembly 6 is arranged in the cast-in-situ space and the splicing seam in a penetrating way and is tied between the inner template 5 and the outer template 4. After the cast-in-place space poured concrete 3 is hardened, the outer template 4, the inner template 5, the first pull rod 61 and the connecting sleeve 63 can be removed, the second pull rod 62 is poured into the concrete, and finally, the splice joint is filled with plugging materials to ensure the heat preservation and energy conservation of the outer wall of the passive building.
Fig. 6 is a schematic diagram of a T-shaped casting joint constructed by connecting joints of the insulation precast slabs of the present invention, showing one mode of use of the tie rod assembly. The first heat preservation prefabricated slab 1 and the second heat preservation prefabricated slab 2 are arranged in an aligned mode. An inner wall A is arranged at the joint of the first heat preservation prefabricated plate 1 and the second heat preservation prefabricated plate 2. The first heat preservation prefabricated panel 1 includes a first outer louver 12 and a first inner louver 11 connected to the first outer louver 12. The first outer leaf 12 extends out of the first extension. The second insulation precast slab 2 includes a second outer deck 22 and a second inner deck 21 connected to the second outer deck 22. The second outer leaf 22 extends out of the second extension. The inner sides of the first extension and the second extension face the inner wall a. The inner wall A, the first inner leaf 11, the first extension part, the second extension part and the second inner leaf 21 form a cast-in-situ space. A splice seam is formed between the first extension and the second extension for the pull rod assembly 6 to pass through.
With continued reference to fig. 6, the pull assembly 6 includes a first pull rod 61, a second pull rod 62, and a connecting sleeve 63 connected between the first pull rod 61 and the second pull rod 62. The outer sides of the first extension and the second extension are attached with an outer form 4. The pull rod assembly 6 is arranged in the cast-in-situ space and the splicing seam in a penetrating way and is tied between the inner wall A and the outer template 4. Specifically, the first end of the inner wall A facing the first extending part and the second extending part is embedded with a third embedded sleeve. The first end of the second pull rod 62 is connected to the third embedded sleeve, and the second end of the second pull rod 62 is detachably connected to the connecting sleeve. The first end of the first tie rod 61 is detachably mounted to the outer die plate 4, and the second end of the first tie rod 61 is detachably connected to the connection sleeve.
With continued reference to fig. 6, the first inner forms 5 are mounted on the outer sides of the first inner blades 11 and the first side of the inner wall a, and the second inner forms are mounted on the outer sides of the second inner blades 21 and the second side of the inner wall a. The first inner die plate 5 and the second inner die plate are both L-shaped. The first inner formwork 5 includes a first flange fitted to the first inner louver 11 and a second flange fitted to the first side of the inner wall a. The second inner formwork includes a third flange attached to the second inner leaf 21 and a fourth flange attached to the second side of the inner wall a. The second folded edge and the fourth folded edge are fixed through a traditional opposite-pulling screw drawknot. The inner wall A is preset with an embedded PVC pipe for the traditional opposite-pull screw to pass through. The first inner blade 11 and the second inner blade 21 are embedded with the first embedded sleeve 71. The first flange is detachably connected to a first pre-buried sleeve 71 in the first inner leaf 11 by a first connecting rod 72. The third flange is detachably connected to the first pre-buried sleeve 71 in the second inner leaf 21 by a first connecting rod 72. The inner template is fixed on the inner leaf plate through a first connecting rod, and the outer template is tied at the first end of the inner wall A through a pull rod assembly. After the cast-in-place space poured concrete 3 is hardened, the outer template 4, the inner template 5, the first pull rod 61 and the connecting sleeve 63 can be removed, the second pull rod 62 is poured into the concrete, and finally, the splice joint is filled with plugging materials to ensure the heat preservation and energy conservation of the outer wall of the passive building.
Referring to fig. 1, the invention provides a construction method of a connection node of a heat preservation prefabricated plate, which comprises the following steps:
s1: the first heat preservation prefabricated slab 1 and the second heat preservation prefabricated slab 2 are installed, so that a splice seam is formed between the first extension part of the first heat preservation prefabricated slab 1 and the second extension part of the second heat preservation prefabricated slab 2.
The first heat preservation prefabricated slab 1 and the second heat preservation prefabricated slab 2 are installed, and the first heat preservation prefabricated slab 1 is arranged on the second heat preservation prefabricated slab 2 in an aligned mode, so that a splicing seam is formed between the first extension part of the first outer blade plate 12 of the first heat preservation prefabricated slab 1 and the second extension part of the second outer blade plate 22 of the second heat preservation prefabricated slab 2.
S2: the inner mold plate 5 is connected to the outer sides of the first inner blade 11 and the second inner blade 21 such that a cast-in-place space is formed among the inner mold plate 5, the first inner blade 11 and the second inner blade 21.
S3: the outer die plate 4 is disposed along the splice seam and connected to the outside of the first and second extensions.
S4: the pull rod assembly 6 is tied between the outer die plate 4 and the inner die plate 5, so that a first pull rod 61 of the pull rod assembly 6 penetrates through the splicing seam and is tied to the outer die plate 4, and a second pull rod 62 of the pull rod assembly 6 penetrates through the cast-in-situ space and is tied to the inner die plate 5.
And the inner sides of the first extension part and the second extension part are stuck with the plugging strips, so that the first extension part and the second extension part are respectively overlapped on two sides of the plugging strips, and concrete is prevented from entering the splice joint to adhere the connecting sleeve and the first pull rod when the concrete is poured in the later stage. The second tie rod 62 is reattached to the attachment sleeve through the occlusion strip when the tie rod assembly 6 is installed.
As a preferred embodiment, a plurality of first connecting rods 72 are assembled to the inner mold plate 5 while the tie rod assembly 6 is installed. First embedded sleeves are embedded in the first inner blade plate 11 and the second inner blade plate 21 respectively, and a plurality of first connecting rods 72 are connected to the first embedded sleeves in the first inner blade plate 11 and the second inner blade plate 21 respectively.
Specifically, as shown in fig. 1, the first inner blade 11 and the second inner blade 21 are respectively embedded with a first embedded sleeve. The plurality of first connecting rods 72 are penetrated through the inner die plate 5 while the tie rod assembly 6 is tied between the inner die plate 5 and the outer die plate 4. And a plurality of first connecting rods 72 are respectively connected with first embedded sleeves in the second inner blades 11 and 21 in a threaded manner. The second limiting members are respectively screwed to the end portions of the plurality of first connecting rods 72, so that the second limiting members abut against the outer sides of the inner templates 5 to fix the inner templates 5 to the outer sides of the first inner blades 11 and the second inner blades 21.
As a preferred embodiment, the first extension portion and the second extension portion are embedded with a second embedded sleeve. A plurality of second connection bars are assembled to the inner mold plate 5 while the tie bar assembly 6 is installed. And a plurality of second connecting rods are respectively connected with the first extension part and the second embedded sleeve in the second extension part.
Specifically, the tie rod assembly 6 is tied between the inner die plate 5 and the outer die plate 4, and a plurality of second connecting rods are penetrated into the inner die plate; the first ends of the second connecting rods are detachably connected with the first outer blade plate and the second embedded sleeve in the second outer blade plate respectively; the second ends of the second connecting rods are respectively connected with a third limiting piece in a screwed mode, and the third limiting pieces are abutted against the outer side of the inner template 5 to fix the inner template 5 on the outer side faces of the first inner leaf plate and the second inner leaf plate.
S5: concrete 3 is poured in the cast-in-place space such that the second tie rods 62 are poured in the concrete 3.
S6: the inner and outer forms 5 and 4 are removed.
S7: the connecting sleeve and the first pull rod 61 are removed from the second pull rod 62.
After the inner die plate 5 and the outer die plate 4 are removed, the connecting sleeve and the first pull rod 61 are removed from the second pull rod 62; the splice joint from which the connection sleeve and the first tie rod 61 are removed is filled with a plugging material (foaming glue) to plug the splice joint, ensuring heat insulation and air tightness of the outer wall of the passive building.
It should be noted that, the structures, proportions, sizes and the like shown in the drawings attached to the present specification are used for understanding and reading only in conjunction with the disclosure of the present specification, and are not intended to limit the applicable limitations of the present invention, so that any modification of the structures, variation of proportions or adjustment of sizes of the structures, proportions and the like should not be construed as essential to the present invention, and should still fall within the scope of the disclosure of the present invention without affecting the efficacy and achievement of the present invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
The present invention has been described in detail with reference to the embodiments of the drawings, and those skilled in the art can make various modifications to the invention based on the above description. Accordingly, certain details of the embodiments are not to be interpreted as limiting the invention, which is defined by the appended claims.
Claims (10)
1. A thermal insulation precast slab connection node structure, characterized by comprising:
the first heat preservation prefabricated plate comprises a first outer blade plate and a first inner blade plate overlapped with the first outer blade plate, and the first outer blade plate extends along the plate surface direction to form a first extension part;
the second heat preservation prefabricated board comprises a second outer blade and a second inner blade overlapped with the second outer blade, and the second outer blade extends along the board surface direction to form a second extension part;
the inner template is connected to the outer sides of the first inner blade plate and the second inner blade plate, a cast-in-situ space is formed among the inner template, the first inner blade plate and the second inner blade plate, concrete is poured in the cast-in-situ space, and a splicing seam is formed between the second extension part and the first extension part;
the outer template is arranged along the splicing seam and connected to the outer sides of the first extension part and the second extension part;
the pull rod assembly is tied between the outer die plate and the inner die plate and comprises a first pull rod poured in the concrete and a second pull rod penetrating through the splicing seam, the first pull rod is detachably connected with the second pull rod through a connecting sleeve, the first pull rod is tied to the outer die plate, and the second pull rod is tied to the inner die plate;
one end of the first heat preservation prefabricated slab is cast in situ to a first end column, the first outer leaf plate extends out of a first extension part, the first extension part is L-shaped, a cast-in-situ space for casting the first end column is formed between the first extension part and the first inner leaf plate 11, a splice joint for a pull rod assembly to penetrate is formed on the first extension part, a third embedded sleeve is embedded at the first end of the first inner leaf plate, a pull knot assembly penetrates through the splice joint and the cast-in-situ space and is connected with the third embedded sleeve, the pull knot assembly is tied between the first extension part and the first inner leaf plate, an inner template is mounted on the inner side of the first heat preservation prefabricated slab, and a second embedded sleeve and the inner template are embedded in the first outer leaf plate and are connected with the second embedded sleeve through a second connecting rod to fix the inner template.
2. The insulation precast slab connection node structure according to claim 1, wherein first embedded sleeves are embedded in the first inner leaf and the second inner leaf respectively, a plurality of first connecting rods are assembled on the inner formwork, and the plurality of first connecting rods are detachably connected to the first embedded sleeves in the first inner leaf and the second inner leaf respectively.
3. The insulation precast slab connection node structure according to claim 1, wherein second embedded sleeves are embedded in the first extending portion and the second extending portion, a plurality of second connecting rods are assembled on the inner formwork and are respectively connected to the second embedded sleeves in the first extending portion and the second extending portion, and the second connecting rods are poured in the concrete.
4. The insulation prefabricated panel connection node structure according to claim 1, wherein the inner sides of the first extension portion and the second extension portion are attached with a blocking tape for blocking between the first extension portion and the second extension portion.
5. The insulation prefabricated panel connection node structure according to claim 1, wherein a side of the first inner louver near the cast-in-place space and a side of the second inner louver near the cast-in-place space are respectively formed with a rough surface.
6. The insulation prefabricated panel connection node structure according to claim 1, wherein a side surface of the first inner blade facing the second inner blade and a side surface of the second inner blade facing the first inner blade are respectively concave inwards to form a plurality of shear grooves, and the plurality of shear grooves are arranged at intervals in a vertical direction.
7. A heat preservation prefabricated panel connection node construction method based on the heat preservation prefabricated panel connection node structure as claimed in any one of claims 1 to 6, characterized by comprising the following steps:
installing a first heat preservation prefabricated plate and a second heat preservation prefabricated plate, so that a splice joint is formed between a first extension part of the first heat preservation prefabricated plate and a second extension part of the second heat preservation prefabricated plate;
connecting an inner template to the outer sides of a first inner blade plate and a second inner blade plate, so that a cast-in-situ space is formed among the inner template, the first inner blade plate and the second inner blade plate;
arranging an outer template along the splicing seam and connecting the outer template to the outer sides of the first extension part and the second extension part;
the pull rod assembly is tied between the outer die plate and the inner die plate, so that a first pull rod of the pull rod assembly penetrates through the splicing seam and is tied to the outer die plate, and a second pull rod of the pull rod assembly penetrates through the cast-in-situ space and is tied to the inner die plate;
pouring concrete in the cast-in-place space so that the second pull rod is poured in the concrete;
removing the inner and outer templates;
and removing the connecting sleeve and the first pull rod on the second pull rod.
8. The method for constructing a connection node of insulation panels according to claim 7, wherein the step of connecting the inner form to the outer sides of the first inner leaf and the second inner leaf further comprises:
assembling a plurality of first connecting rods on the inner template;
first embedded sleeves are respectively embedded in the first inner blade plate and the second inner blade plate, and a plurality of first connecting rods are respectively connected with the first embedded sleeves in the first inner blade plate and the second inner blade plate.
9. The method of constructing a connection node for insulation panels according to claim 7, wherein the step of connecting the outer form to the outside of the first and second extensions further comprises:
assembling a plurality of second connecting rods on the inner formwork;
the first extension part and the second extension part are embedded with second embedded sleeves, and the second connecting rods are respectively connected with the second embedded sleeves in the first extension part and the second extension part.
10. The method for constructing a connection node of a thermal insulation prefabricated panel according to claim 7, wherein the step of drawstring assembly is coupled between the outer and inner formworks comprises:
a pull rod assembly is tied between the outer template and the inner template;
attaching a plugging band to the inner sides of the first extension part and the second extension part, so that the plugging band plugs between the first extension part and the second extension part.
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| CN108798013A (en) * | 2018-06-05 | 2018-11-13 | 中冶天工集团有限公司 | It is a kind of novel to exempt to punch thermal insulation board integral structure and construction method |
| CN109339290A (en) * | 2018-11-30 | 2019-02-15 | 美好建筑装配科技有限公司 | It is a kind of for overlapped shear wall prefabricated components junction to drawing device |
| CN110424568B (en) * | 2019-07-23 | 2021-01-29 | 郴州市长信住工科技有限公司 | Precast concrete sandwich wall with ribs |
| CN112482621B (en) * | 2020-12-04 | 2022-08-02 | 上海万科企业有限公司 | PC heat-insulation integrated plate construction method |
| CN114000647A (en) * | 2021-11-11 | 2022-02-01 | 周印涛 | Assembled structure heat-preservation integrated building wallboard, connector thereof and construction method thereof |
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