CN113431094A - Prefabricated PC (polycarbonate) abutted seam node structure of underground engineering structure and method thereof - Google Patents
Prefabricated PC (polycarbonate) abutted seam node structure of underground engineering structure and method thereof Download PDFInfo
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- CN113431094A CN113431094A CN202110717954.4A CN202110717954A CN113431094A CN 113431094 A CN113431094 A CN 113431094A CN 202110717954 A CN202110717954 A CN 202110717954A CN 113431094 A CN113431094 A CN 113431094A
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- 239000004417 polycarbonate Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 9
- 229920000515 polycarbonate Polymers 0.000 title claims abstract description 6
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 238000010276 construction Methods 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 238000005187 foaming Methods 0.000 claims description 4
- 239000000565 sealant Substances 0.000 claims description 3
- 229920005549 butyl rubber Polymers 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 210000002105 tongue Anatomy 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Building Environments (AREA)
Abstract
The invention relates to a prefabricated PC (polycarbonate) splicing seam node structure and a method for an underground engineering structure, wherein the structure comprises a horizontal splicing seam and a vertical splicing seam, and at least one gradient structure is arranged on the cross sections of the horizontal splicing seam and the vertical splicing seam from the inside to the outside of a wall body; a horizontal non-shrinkage plugging part, a horizontal mortar filling area, a horizontal PE rod and a horizontal sealing part are sequentially arranged in the horizontal splicing seam from the inside of the wall body to the outside; a vertical plugging part, an airtight strip, a vertical mortar filling area, a vertical PE rod and a vertical sealing part are sequentially arranged in the vertical splicing seam from the inside of the wall body to the outside; the vertical splicing seam is provided with a cavity at the downstream of the gradient. The invention also provides a construction method of the prefabricated PC abutted seam node of the underground engineering structure, which greatly improves the integral waterproof performance of the prefabricated PC component used for the underground engineering envelope structure and prolongs the service life of the prefabricated PC building.
Description
Technical Field
The invention relates to the technical field of prefabricated PC (personal computer) buildings, in particular to a prefabricated PC seam splicing node structure of an underground engineering structure and a method thereof.
Background
With the development of urban construction and underground space, a great deal of attempts for prefabrication and assembly of underground engineering are made at home and abroad in order to improve the quality of underground structures and reduce the construction cost. According to the technical requirements of prefabricating PC in Shanghai city, all new projects need to meet the index of monomer prefabrication rate of 40%. Throughout the market of the fabricated building, a large number of actual engineering cases show that when the underground engineering envelope structure adopts prefabricated components, if the process treatment is not good at horizontal and vertical abutted seam nodes, the situation of water leakage is easy to occur at the later stage. And the current universal joint design and factory manufacturing methods of the prefabricated wall panel have certain water seepage hidden trouble. Although the design of the node is convenient in processing, production, transportation and on-site splicing installation, the designed abutted seam is mainly blocked by special plugging materials and waterproof layers, and the plugging materials are aged after 5 years under normal conditions, so that the situation that water seeps into a room and even damages a containment mechanism can occur. Therefore, the invention improves the traditional joint node structure, optimizes the waterproof mode of the abutted seam and solves the embarrassment that the prefabricated PC component of the underground building envelope is easy to seep water.
Disclosure of Invention
The invention aims to solve the defects that plugging materials are aged and water seepage hidden danger is easy to occur in the prior art, and provides a prefabricated PC (polycarbonate) abutted seam node structure of an underground engineering structure and a method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a prefabricated PC (polycarbonate) seam joint structure of an underground engineering structure comprises a horizontal splicing seam and a vertical splicing seam, wherein at least one gradient structure is arranged on the cross sections of the horizontal splicing seam and the vertical splicing seam in the direction from the inside to the outside of a wall body; the horizontal splicing seam is formed by splicing an upper splicing rabbet a and a lower splicing rabbet b of adjacent prefabricated PC wallboards; the vertical splicing seam is formed by splicing a left splicing rabbet c and a right splicing rabbet d of adjacent prefabricated PC wallboards; a horizontal non-shrinkage plugging part, a horizontal mortar filling area, a horizontal PE rod and a horizontal sealing part are sequentially arranged in the horizontal splicing seam from the outside to the inside of the wall body, wherein the horizontal mortar filling area is positioned at the gradient position of the horizontal splicing seam; a vertical plugging part, an airtight strip, a vertical mortar filling area, a vertical PE rod and a vertical sealing part are sequentially arranged in the vertical splicing seam from the outside to the inside of the wall body, wherein the vertical mortar filling area is positioned at the gradient position of the vertical splicing seam; and a cavity is arranged at the downstream of the vertical splicing seam in the gradient.
Further, the horizontal plugging portion and the vertical plugging portion are made of non-shrinkage mortar.
Further, the airtight strip is a foamed or butyl rubber airtight strip with a hollow structure.
Furthermore, the positions of the left splicing tongue-and-groove c and the right splicing tongue-and-groove d, which correspond to the airtight strip and the vertical PE rod, are provided with positioning grooves.
Furthermore, the left splicing rabbet and the right splicing rabbet are provided with grooves which are recessed inwards to form the cavity at the downstream of the gradient of the vertical splicing seam.
Furthermore, a fully-covered heat-insulating layer is arranged on one side, located outside the wall body, of the hanging plate.
The invention also provides a construction method of the prefabricated PC abutted seam node of the underground engineering structure, which is suitable for the horizontal and vertical abutted seam node construction of the prefabricated PC vertical component and comprises the following steps:
s1: the prefabricated PC wall board is arranged at a horizontal installation joint, the ends of an upper prefabricated PC board and a lower prefabricated PC board are respectively provided with a rabbet by adopting a grinding tool, the rabbets are an upper splicing rabbet and a lower splicing rabbet, the installation sequence is marked, when the prefabricated PC wall board is installed on site, grouting is adopted at the splicing joints, the outer side of the prefabricated PC wall board is blocked by non-shrinkage mortar, and the inner side of the prefabricated PC wall board is provided with a PE rod and sealed by building sealing glue;
s2: the prefabricated PC wallboard is arranged at a vertical installation joint node, a grinding tool is adopted to manufacture a cavity between the end parts of a left prefabricated PC board and a right prefabricated PC board, the size of the cavity is determined according to the thickness of the prefabricated PC wallboard, the unilateral recess is 20mm plus 10mm, a grinding tool is used to manufacture a tongue-and-groove in the vertical direction, the left side splicing tongue-and-groove and the right side splicing tongue-and-groove are respectively formed, grouting is adopted at the splicing joint, refractory joint materials and foaming sealing strips are used for sealing the outer side of the prefabricated PC wallboard, and PE rods and building sealant are used for sealing the inner side of the prefabricated PC wallboard;
s3: and finally, making an inner heat-insulating layer of the building.
The invention has the beneficial effects that:
according to the prefabricated PC splicing joint structure of the underground engineering structure and the method thereof, the conventional water seepage path of the prefabricated PC wallboard is considered from the aspect of physical situation, and the prefabricated PC wallboard is prevented from permeating into a room by presetting the drainage cavity and the structural water retaining tongue-and-groove, so that the integral waterproof performance of the prefabricated PC component for the underground engineering envelope structure wallboard is greatly improved, and the service life of the prefabricated PC building is prolonged.
Drawings
FIG. 1 is a schematic cross-sectional view of a horizontal splice seam according to the present invention;
FIG. 2 is a schematic diagram of the cross-sectional structure in the vertical direction of a prefabricated PC wall panel of the present invention;
FIG. 3 is a schematic cross-sectional view of a vertical splice seam of the present invention;
FIG. 4 is a schematic view of the horizontal lower cross-sectional configuration of a prefabricated PC wall panel of the present invention;
labeled as: the prefabricated PC wallboard comprises a prefabricated PC wallboard 1, an upper splicing rabbet 1a, a lower splicing rabbet 1b, a left splicing rabbet 1c, a right splicing rabbet 1d, a heat insulation layer 2, a horizontal splicing seam 3, a horizontal plugging portion 31, a horizontal mortar filling area 32, a horizontal PE rod 33, a horizontal sealing portion 34, a vertical splicing seam 4, a vertical plugging portion 41, an air-tight strip 42, a vertical mortar filling area 43, a vertical PE rod 44, a vertical sealing portion 45, a positioning groove 46, a cavity 47, vertical PE rods 5b and 6a, vertical non-shrinkage plugging portions 6b and 7a and a vertical sealing portion 7 b.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. These examples are intended to illustrate the invention and are not intended to limit the scope of the invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided" and "connected" are to be interpreted broadly, e.g. as a fixed connection, a detachable connection or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The structural features of the present invention will now be described in detail with reference to the accompanying drawings.
Referring to fig. 1-4, the prefabricated PC splicing joint node structure of the underground engineering structure comprises a horizontal splicing joint 3 and a vertical splicing joint 4, wherein a gradient structure is arranged in the direction from the outside to the inside of the cross section of the horizontal splicing joint 3 and the cross section of the vertical splicing joint 4, the horizontal splicing joint 3 is formed by splicing an upper splicing rabbet 1a and a lower splicing rabbet 1b of adjacent prefabricated PC wall boards 1, and the vertical splicing joint 4 is formed by splicing a left splicing rabbet 1c and a right splicing rabbet 1d of the adjacent prefabricated PC wall boards 1.
A horizontal non-shrinkage plugging portion 31, a horizontal mortar filling area 32, a horizontal PE rod 33 and a horizontal sealing portion 34 are sequentially arranged in the horizontal splicing seam 3 from the outside to the inside of the wall, the horizontal mortar filling area 32 is located at the gradient position of the horizontal splicing seam 3, and the horizontal plugging portion 31 is made of non-shrinkage mortar. On the horizontal seam structure of the prefabricated PC component, the plugging material has the first waterproof function in the traditional sense, the structural component is provided with a rabbet to form the second water retaining function, and the rabbet adopts a structure with a high inner part and a low outer part, so that once the external plugging material is aged to cause the water seepage of the external wall, the water seepage can be prevented by the rabbet structure and cannot permeate into the room.
According to the horizontal and vertical abutted seam node structure of the prefabricated PC vertical component, the conventional water seepage path of the prefabricated PC wallboard is considered from the physical situation, and the prefabricated PC wallboard is prevented from permeating into a room by presetting the drainage cavity and the structural water retaining tongue and groove, so that the overall waterproof performance of the prefabricated PC component for the underground engineering enclosure structure wallboard is greatly improved, and the service life of a prefabricated PC building is prolonged.
The invention also provides a construction method of the prefabricated PC joint nodes of the underground engineering structure, which is suitable for horizontal and vertical joint node construction of prefabricated PC vertical components and comprises the following steps:
s1: when the prefabricated PC wallboard 1 is designed with a horizontal installation joint, the end parts of an upper prefabricated PC board 1 and a lower prefabricated PC board 1 are provided with grooves and tongues by utilizing a grinding tool, namely an upper splicing groove and tongue 1a and a lower splicing groove and tongue 1b respectively, and marks are made on the installation sequence;
s2: when the prefabricated PC wallboard 1 is designed at a vertical installation joint node, a grinding tool is used for manufacturing a cavity 47 between the end parts of a left prefabricated PC board and a right prefabricated PC board, the size of the cavity 47 is determined according to the thickness of the prefabricated PC boards, the unilateral concave size of 20mm plus 10mm can be generally adopted, a grinding tool is used for manufacturing a groove and tongue in the vertical direction, namely a left-side splicing groove and tongue 1c and a right-side splicing groove and tongue 1d respectively, special grouting is adopted at the splicing joint, the outer side of a board block is blocked by a fireproof joint material and a foaming sealing strip, and the inner side of the board block is closed by a PE rod and building sealant;
s3: finally, the heat-insulating layer 2 in the building is made.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a prefabricated PC piece joint node construction of underground engineering structure, includes horizontal concatenation seam (3) and vertical concatenation seam (4), its characterized in that: the cross sections of the horizontal splicing seam (3) and the vertical splicing seam (4) are at least provided with a gradient structure in the direction from the inside to the outside of the wall body; the horizontal splicing seam (3) is formed by splicing an upper splicing rabbet (1a) and a lower splicing rabbet (1b) of adjacent prefabricated PC wallboards (1); the vertical splicing seam (4) is formed by splicing a left splicing rabbet (1c) and a right splicing rabbet (1d) of adjacent prefabricated PC wallboards (1); the horizontal splicing seam (3) is sequentially provided with a horizontal non-shrinkage plugging part (31), a horizontal mortar filling area (32), a horizontal PE rod (33) and a horizontal sealing part (34) from the outside to the inside of the wall body, wherein the horizontal mortar filling area (32) is positioned at the gradient position of the horizontal splicing seam (3); the vertical splicing seam (4) is sequentially provided with a vertical plugging part (41), an airtight strip (42), a vertical mortar filling area (43), a vertical PE rod (44) and a vertical sealing part (45) from the outside to the inside of the wall body, wherein the vertical mortar filling area (43) is positioned at the gradient position of the vertical splicing seam (4); and a cavity (47) is arranged at the downstream of the gradient of the vertical splicing seam (4).
2. The underground project structure prefabricated PC patchwork node construction of claim 1, wherein the horizontal block section (31) and the vertical block section (41) are composed of non-shrinking mortar.
3. The underground engineering structure prefabricated PC abutted seam node construction according to claim 1, wherein the airtight strip (42) is a foamed or butyl rubber airtight strip of a hollow structure.
4. The prefabricated PC splicing joint structure of an underground engineering structure as claimed in claim 1, wherein the left splicing rabbet (1c) and the right splicing rabbet (1d) are respectively provided with a positioning groove (46) corresponding to the positions of the airtight strip (42) and the vertical PE rod (44).
5. The prefabricated PC splicing joint structure of an underground engineering structure as claimed in claim 1, wherein the left splicing rabbet (1c) and the right splicing rabbet (1d) are provided with grooves which are inwards recessed to form the cavities (47) at the downstream of the gradient of the vertical splicing joint (4).
6. The underground engineering structure prefabricated PC splicing joint structure of claim 1, wherein one side of the prefabricated PC wall board (1) positioned outside the wall body is provided with a fully-covered heat-insulating layer (2).
7. A construction method of prefabricated PC (polycarbonate) splicing joint nodes of an underground engineering structure is suitable for the prefabricated PC splicing joint node structures of the underground engineering structure of any one of claims 1 to 6, and is characterized by comprising the following steps:
s1: the method comprises the following steps that a prefabricated PC wallboard (1) is arranged at a horizontal installation joint, grooves are manufactured at the end parts of an upper prefabricated PC board (1) and a lower prefabricated PC board (1) by a grinding tool at the horizontal installation joint, the upper splicing groove (1a) and the lower splicing groove (1b) are respectively arranged, the installation sequence is marked, when the prefabricated PC wallboard (1) is installed on site, grouting is adopted at the splicing joints, non-shrinkage mortar is used for plugging the outer side of the prefabricated PC wallboard (1), and a PE rod is arranged at the inner side of the prefabricated PC wallboard and sealed by building sealing glue;
s2: the method comprises the following steps that a prefabricated PC wallboard (1) is arranged at a vertical installation joint node, a cavity (47) is manufactured between the end parts of a left prefabricated PC board and a right prefabricated PC board by adopting a grinding tool, the size of the cavity (47) is determined according to the thickness of the prefabricated PC board, the size of a single side is recessed by 20mm by 10mm, grooves in the vertical direction are manufactured by utilizing the grinding tool and respectively comprise a left splicing groove (1c) and a right splicing groove (1d), grouting is adopted at the splicing joint, the outer side of the prefabricated PC wallboard (1) is blocked by using a fireproof joint material and a foaming sealing strip, and the inner side of the prefabricated PC wallboard is sealed by using a PE rod and building sealant;
s3: finally, an inner heat-insulating layer (2) of the building is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110717954.4A CN113431094A (en) | 2021-06-28 | 2021-06-28 | Prefabricated PC (polycarbonate) abutted seam node structure of underground engineering structure and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110717954.4A CN113431094A (en) | 2021-06-28 | 2021-06-28 | Prefabricated PC (polycarbonate) abutted seam node structure of underground engineering structure and method thereof |
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| CN113431094A true CN113431094A (en) | 2021-09-24 |
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| CN202110717954.4A Pending CN113431094A (en) | 2021-06-28 | 2021-06-28 | Prefabricated PC (polycarbonate) abutted seam node structure of underground engineering structure and method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206034702U (en) * | 2016-05-31 | 2017-03-22 | 中民筑友科技投资有限公司 | Outer waterproof wall panel node |
| CN207609033U (en) * | 2017-11-30 | 2018-07-13 | 中铁十局集团建筑工程有限公司 | A kind of waterproof construction of assembling type steel structure cladding panel |
| CN109667352A (en) * | 2019-01-16 | 2019-04-23 | 中南大学 | Assembled architecture prefabricated panel vertical abutment joint grouting method Alveolus type waterproof connecting structure |
| US20200102751A1 (en) * | 2017-06-02 | 2020-04-02 | China State Construction Engineering Corporation Limited | Precast column base joint and construction method therefor |
| CN112726871A (en) * | 2020-12-30 | 2021-04-30 | 上海建工五建集团有限公司 | Waterproof structure of prefabricated external wall panel |
-
2021
- 2021-06-28 CN CN202110717954.4A patent/CN113431094A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206034702U (en) * | 2016-05-31 | 2017-03-22 | 中民筑友科技投资有限公司 | Outer waterproof wall panel node |
| US20200102751A1 (en) * | 2017-06-02 | 2020-04-02 | China State Construction Engineering Corporation Limited | Precast column base joint and construction method therefor |
| CN207609033U (en) * | 2017-11-30 | 2018-07-13 | 中铁十局集团建筑工程有限公司 | A kind of waterproof construction of assembling type steel structure cladding panel |
| CN109667352A (en) * | 2019-01-16 | 2019-04-23 | 中南大学 | Assembled architecture prefabricated panel vertical abutment joint grouting method Alveolus type waterproof connecting structure |
| CN112726871A (en) * | 2020-12-30 | 2021-04-30 | 上海建工五建集团有限公司 | Waterproof structure of prefabricated external wall panel |
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Application publication date: 20210924 |
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