CN109356320B - Composite connecting piece for prefabricated sandwich heat-insulation wall board and preparation method - Google Patents
Composite connecting piece for prefabricated sandwich heat-insulation wall board and preparation method Download PDFInfo
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- CN109356320B CN109356320B CN201811425081.4A CN201811425081A CN109356320B CN 109356320 B CN109356320 B CN 109356320B CN 201811425081 A CN201811425081 A CN 201811425081A CN 109356320 B CN109356320 B CN 109356320B
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- connector
- composite connector
- connecting body
- composite
- thermal insulation
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- 239000002131 composite material Substances 0.000 title claims abstract description 51
- 238000009413 insulation Methods 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims description 12
- 239000004567 concrete Substances 0.000 claims abstract description 33
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims abstract description 23
- 239000011151 fibre-reinforced plastic Substances 0.000 claims abstract description 23
- 239000003365 glass fiber Substances 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 7
- 229920005989 resin Polymers 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract 4
- 150000001875 compounds Chemical class 0.000 claims abstract 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 25
- 239000010935 stainless steel Substances 0.000 claims description 25
- 239000004412 Bulk moulding compound Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 238000000748 compression moulding Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- 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
- E04C2/34—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 composed of two or more spaced sheet-like parts
- E04C2/3405—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 composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
- Laminated Bodies (AREA)
- Panels For Use In Building Construction (AREA)
Abstract
本发明属于装配式建筑围护施工领域，涉及一种用于预制夹心保温墙板的复合连接件及其制作方法。复合连接件贯穿外叶混凝土墙，保温层与内叶混凝土墙；复合连接件由连接体与套管组成；连接体套置在套管内；连接体分为连接体上段、连接体中间段、连接体下段；连接体下段为若干个圆锥台叠加而成；连接体上段为向外扩展的倒锥形结构；套管的一端的管身为向外侧倾斜支出；连接体下段中圆锥台较大直径的圆台面的直径相切于连接体中间段截面的边缘；纤维增强塑料制成的复合连接件其中芯部分为长玻璃纤维，其表面为短切玻璃纤维与树脂形成的团状模塑料。本发明抗拉、抗剪强度高，导热系数低，耐腐蚀性能好，使用寿命长。连接件结构简单、质量轻、施工方便。
The invention belongs to the field of prefabricated building enclosure construction, and relates to a composite connector for prefabricated sandwich thermal insulation wall panels and a manufacturing method thereof. The composite connector penetrates the outer leaf concrete wall, the thermal insulation layer and the inner leaf concrete wall; the composite connector is composed of a connector and a casing; the connector is sleeved in the casing; the connector is divided into the upper section of the connector, the middle section of the connector, the connection The lower section of the connecting body is formed by the superposition of several truncated cones; the upper section of the connecting body is an inverse conical structure that expands outwards; the tube body at one end of the casing is inclined to the outside; the larger diameter of the truncated cone in the lower section of the connecting body The diameter of the circular mesa is tangent to the edge of the middle section of the connector; the composite connector made of fiber reinforced plastic has a long glass fiber in its core and a mass molding compound formed by chopped glass fiber and resin on its surface. The invention has high tensile and shear strength, low thermal conductivity, good corrosion resistance and long service life. The connecting piece has simple structure, light weight and convenient construction.
Description
Technical Field
The invention belongs to the field of fabricated building enclosure construction, and particularly relates to a composite connecting piece for a prefabricated sandwich heat-insulation wallboard and a manufacturing method thereof.
Background
The prefabricated concrete sandwich heat-insulation wallboard is used as a part of an assembly type building, has three functions of bearing, enclosing and heat insulation, and has very wide application prospect. The main components of the device are inner and outer leaf concrete slabs and a heat insulation layer in the middle, and the inner and outer leaf concrete slabs, the heat insulation layer and the heat insulation layer are combined together through a connecting piece to form a stressed whole. In the sandwich heat-insulating wall plate, the connecting piece mainly plays a role in connecting the inner leaf concrete plate and the outer leaf concrete plate together, and the stress performance of the connecting piece has a decisive influence on the overall performance of the wall plate. Therefore, the design and research of the connecting piece are key links for developing the technology of the sandwich thermal insulation wallboard.
The connecting piece that is applied to precast concrete with filling heat preservation wallboard at present mainly has three types of ordinary steel bar connection spare, stainless steel connecting piece and fibre reinforced plastic connecting piece, respectively has its advantage and defect: the common steel bar connecting piece has low manufacturing cost and firm connection, but has high heat conductivity coefficient, thermal bridge effect, poor corrosion resistance and easy potential safety hazard of the wall body; the stainless steel connecting piece has low heat conductivity coefficient and good durability, but has higher cost and less engineering application; the Fiber Reinforced Plastic (FRP) connecting piece has low heat conductivity coefficient, good corrosion resistance and high tensile strength, but has low shear strength, brittle fracture when being damaged and certain risk when being used.
Disclosure of Invention
The invention provides a composite connecting piece for a prefabricated sandwich heat-insulation wallboard and a preparation method thereof aiming at the defects.
The invention adopts the following technical scheme:
the invention relates to a composite connecting piece for a prefabricated sandwich heat-insulation wall board, which is characterized in that the prefabricated sandwich heat-insulation wall board is an outer leaf concrete wall, and a heat-insulation layer and an inner leaf concrete wall are formed; the composite connecting piece penetrates through the outer leaf concrete wall, the heat insulation layer and the inner leaf concrete wall; the composite connecting piece consists of a connecting body and a sleeve; the connecting body is sleeved in the sleeve; the connector is divided into an upper section of the connector, a middle section of the connector and a lower section of the connector; the lower section of the connecting body is formed by superposing a plurality of truncated cones; the upper section of the connecting body is of an inverted cone structure which expands outwards; the pipe body at one end of the sleeve is obliquely extended outwards; the diameter of the circular table surface with the larger diameter of the circular table in the lower section of the connector is tangent to the edge of the section of the middle section of the connector
According to the composite connecting piece for prefabricating the sandwich heat-insulation wallboard, the frustum cone at the lower section of the connecting body of the composite connecting piece is narrow at the top and wide at the bottom; the conical platforms are sequentially arranged along the vertical axial direction; the bottom of the lower section of the composite connecting piece connector is provided with a conical bottom platform which is narrow at the bottom and wide at the top; the volume of the cone bottom platform is smaller than that of the cone platform at the upper part of the cone bottom platform.
According to the composite connecting piece for the prefabricated sandwich heat-insulation wallboard, the length of the sleeve is equal to the sum of the length of the upper section of the connecting body of the composite connecting piece and the length of the middle section of the connecting body.
The composite connecting piece for the prefabricated sandwich heat-insulation wallboard is made of fiber reinforced plastic materials; the core part of the composite connecting piece made of the fiber reinforced plastic material is long glass fiber, and the surface of the composite connecting piece is bulk molding compound formed by chopped glass fiber and resin.
According to the composite connecting piece for the prefabricated sandwich heat-insulation wall board, the sleeve is made of stainless steel materials.
According to the composite connecting piece for the prefabricated sandwich heat-insulation wallboard, the sleeve and the composite connecting piece are tightly adhered.
The invention relates to a method for manufacturing a composite connecting piece for a prefabricated sandwich heat-insulation wallboard, which comprises the following steps:
1) manufacturing a mold closing mold according to the design appearance and the size of the fiber reinforced plastic connector;
2) the bulk molding compound is used as a preparation material; placing the preparation material into a die assembly mold;
3) putting long glass fiber on the preparation material placed on the mold closing mold in the step 2), and then covering the long glass fiber with the bulk molding compound for closing the mold;
4) heating the die after die assembly, forming by adopting a compression molding method, and taking out the formed composite connecting piece after cooling;
5) and inserting the composite connecting piece formed in the step 4) into the stainless steel sleeve from the inverted cone structure expanded outwards of the stainless steel sleeve to finish the preparation.
According to the manufacturing method of the composite connecting piece for the prefabricated sandwich heat-insulation wallboard, the bulk molding compound is prepared from chopped glass fibers and resin.
According to the manufacturing method of the composite connecting piece for the prefabricated sandwich heat-insulation wallboard, 502 glue is adopted for tightly adhering the composite connecting piece and the joint part of the stainless steel sleeve.
Advantageous effects
The composite connecting piece for the prefabricated sandwich heat-insulation wallboard has the performance advantages of fiber reinforced plastics and stainless steel, makes up the respective defects, and has the advantages of high tensile strength and shear strength, low heat conductivity coefficient, good corrosion resistance and long service life. The connecting piece has the advantages of simple structure, quick manufacture, light weight, low cost and convenient construction.
According to the fiber reinforced plastic connector of the composite connector for the prefabricated sandwich heat-insulation wallboard, the lower section of the connector comprises a plurality of conical frustums with narrow tops and wide bottoms, so that the connector is prevented from being pulled out of the upper section of the connector to form the inverted cone type square cross-section expanded end, the contact area of the connector and concrete is increased, and the anchoring performance of the connector is improved; the stainless steel sleeve penetrates through the heat-insulating layer, and the upper end and the lower end of the stainless steel sleeve are respectively embedded into the outer leaf concrete wall and the inner leaf concrete wall, so that the shearing resistance of the connecting piece is improved, and the safety of the sandwich heat-insulating wall board is enhanced.
The preparation method of the composite connecting piece for the prefabricated sandwich heat-insulation wallboard is convenient for forming a connecting piece form with a complex outline, is beneficial to improving the anchoring performance of the connecting piece and concrete, keeps higher tensile property and shearing resistance of the connecting piece, and is simple to prepare and easy to operate.
Drawings
FIG. 1 is a front view structural diagram of the present invention;
FIG. 2 is a front view of a fiber reinforced plastic interconnect of the present invention;
FIG. 3 is a front view structural view of a stainless steel sleeve of the present invention;
FIG. 4 is a top view of a fiber reinforced plastic interconnect of the present invention;
figure 5 is a diagram of the construction of the present invention in a prefabricated sandwich insulation wallboard.
In the figure: 1-composite connector, 2-sleeve, 3-connector middle section, 4-connector upper section, 5-connector lower section, 6-outer leaf concrete wall, 7-insulating layer and 8-inner leaf concrete wall.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
As shown in fig. 1 to 5, the present invention provides a composite connector for prefabricated sandwich insulation wall panels, which is arranged in an inner leaf concrete wall 8, an insulation layer 7 and an outer leaf concrete wall 6 of the prefabricated sandwich insulation wall panels in use, and comprises a fiber reinforced plastic connector 1 and a stainless steel sleeve 2.
The fiber reinforced plastic connector 1 is divided into an upper section, a middle section and a lower section, and the middle section 3 is a square section; the upper section 4 is a square section expanded end, the size of the lower section of the upper section 4 is the same as that of the middle section 3, the size of the upper section 4 is larger than that of the lower section, and the upper section 4 is uniformly transited from top to bottom in an inverted cone manner; the lower section 5 is formed by connecting a plurality of truncated cones; the diameter of the circular table surface with the larger diameter of the conical table in the lower section 5 of the connecting body is tangent to the edge of the section of the middle section 3 of the connecting body; the fiber reinforced plastic connector 1 has a core part of long glass fibers and a surface part of bulk molding compound formed by chopped glass fibers and resin.
The stainless steel sleeve 2 is a hollow square pipe, the length of the stainless steel sleeve is equal to the sum of the lengths of the upper section 4 and the middle section 3 of the fiber reinforced plastic connector 1, and the cross section size of the stainless steel sleeve is adaptive to the middle section 3 of the connector; the part of the upper end of the stainless steel sleeve 2, which is longer than the middle section 3 of the connector, is forked along four edges, is obliquely extended outwards at a certain angle, and is tightly attached to the side surface of the regular quadrangular frustum of the upper section 4 of the connector.
The lowest end of the fiber reinforced plastic connector 1 is a truncated cone with a wide upper part and a narrow lower part, three truncated cones with the same size and the narrow upper part and the wide lower part are arranged between the truncated cone with the lowest end and the middle section 3 with the square cross section, and all the truncated cones are vertically arranged along the axis.
The stainless steel sleeve 2 completely covers the middle section 3 of the fiber reinforced plastic connector 1 and partially covers the side surface of a regular quadrangular frustum pyramid of the upper section 4 of the connector; the sleeve 2 and the connecting body 1 are tightly cemented by glue.
The stainless steel sleeve 2 penetrates through a heat insulation layer 7 of the prefabricated sandwich heat insulation wallboard, and the upper end and the lower end of the stainless steel sleeve are respectively embedded into an outer leaf concrete wall 6 and an inner leaf concrete wall 8.
The manufacturing method of the composite connecting piece for the prefabricated sandwich heat-insulation wallboard comprises the following steps:
step one, processing a mold closing mold according to the design appearance and the size of a fiber reinforced plastic connector;
step two, fusing the chopped glass fibers and the resin serving as main raw materials, cooling and softening to form bulk molding compound;
placing a proper amount of bulk molding compound at the bottom of the mold, then placing a proper amount of long glass fibers, covering a proper amount of bulk molding compound on the mold again, heating, forming by adopting a compression molding method, and taking out after cooling;
fourthly, manufacturing a stainless steel sleeve according to the designed appearance and size;
inserting the fiber reinforced plastic connector from the upper end of the stainless steel sleeve, and positioning to a proper position according to design requirements;
and step six, cementing the sleeve and the connecting body by 502 glue.
The invention is used for manufacturing the sandwich heat-insulating wall board of the fabricated building, and the installation and use processes are as follows: binding steel bars in a template, pouring an inner leaf concrete wall, then quickly laying a heat-insulating layer, penetrating a connecting piece into the heat-insulating layer before the concrete is initially set, and inserting the connecting piece into the inner leaf concrete wall to enable the lower end part of a stainless steel sleeve to be partially embedded into the inner leaf concrete wall, and the whole upper section and the middle section of a fiber reinforced plastic connector to be positioned outside the heat-insulating layer; after the inner leaf concrete wall reaches a certain strength, a reinforcing mesh is laid on the heat insulation layer, the outer leaf concrete wall is poured to the specified thickness, the connecting piece is completely embedded into the wall body at the moment, and the sandwich heat insulation wall plate is manufactured after the inner leaf concrete wall and the outer leaf concrete wall are both maintained to the designed strength.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811425081.4A CN109356320B (en) | 2018-11-27 | 2018-11-27 | Composite connecting piece for prefabricated sandwich heat-insulation wall board and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811425081.4A CN109356320B (en) | 2018-11-27 | 2018-11-27 | Composite connecting piece for prefabricated sandwich heat-insulation wall board and preparation method |
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| Publication Number | Publication Date |
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| CN109356320A CN109356320A (en) | 2019-02-19 |
| CN109356320B true CN109356320B (en) | 2021-06-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109914606B (en) * | 2019-04-28 | 2024-09-27 | 安徽建筑大学 | Point claw type connecting piece for composite heat-insulating wall and construction and installation method thereof |
| CN110725547B (en) * | 2019-10-17 | 2023-08-11 | 柳州欧维姆机械股份有限公司 | Compact steel strand inhaul cable and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5673525A (en) * | 1994-04-08 | 1997-10-07 | H.K. Composites, Inc. | Insulating connector rods used in making highly insulated composite wall structures |
| CN105799189B (en) * | 2016-05-05 | 2018-05-18 | 南京锋晖复合材料有限公司 | It is a kind of for hooked connections of prefabricated sandwich heat preserving wall body and preparation method thereof |
| CN206769293U (en) * | 2017-05-31 | 2017-12-19 | 鲁东大学 | Insulated wall connector and the prefabricated sandwich heat preserving wall using the connector |
| CN207063310U (en) * | 2017-07-21 | 2018-03-02 | 湖南东方红建设集团有限公司 | A kind of shear connections component of prefabricated sandwich thermal insulating composite panel |
| CN207405784U (en) * | 2017-09-28 | 2018-05-25 | 上海城建建设实业集团新型建筑材料有限公司 | Precast concrete sandwich heat preservation wallboard and its stainless steel adapting piece |
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