CN110230414B - Prefabricated platform canopy and installation method thereof - Google Patents
Prefabricated platform canopy and installation method thereof Download PDFInfo
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- CN110230414B CN110230414B CN201910628857.0A CN201910628857A CN110230414B CN 110230414 B CN110230414 B CN 110230414B CN 201910628857 A CN201910628857 A CN 201910628857A CN 110230414 B CN110230414 B CN 110230414B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H1/00—Buildings or groups of buildings for dwelling or office purposes; General layout, e.g. modular co-ordination or staggered storeys
- E04H1/12—Small buildings or other erections for limited occupation, erected in the open air or arranged in buildings, e.g. kiosks, waiting shelters for bus stops or for filling stations, roofs for railway platforms, watchmen's huts or dressing cubicles
- E04H1/1205—Small buildings erected in the open air
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
本发明公开了一种装配式站台雨棚及其安装方法，包括混凝土基础、装配式预制混凝土柱、基础与预制混凝土柱连接节点、预制混凝土柱与预制混凝土T型梁连接节点、预制混凝土T型梁、预制混凝土板连接节点、预制混凝土T型梁与预制混凝土板连接节点、预制混凝土T型梁与预制混凝土板中梁连接节点和预制混凝土板。本发明的有益效果是：站台雨棚柱、梁、板均采用工厂预制，可大幅度提高施工功效，柱与基础采用传统的套筒连接，其抗震性能等同于现浇结构，柱与梁连接，梁中预留钢筋孔洞，柱钢筋插入并用锚栓锚柱，其抗震性能满足相关规范要求，梁与板连接，采用嵌入工字钢焊接，其抗震性能满足相关规范要求，构造简单，可大幅度减少人工作业。
The invention discloses a prefabricated platform canopy and an installation method thereof, which includes a concrete foundation, prefabricated concrete columns, connection nodes between the foundation and precast concrete columns, connection nodes between precast concrete columns and precast concrete T-shaped beams, and precast concrete T-shaped beams. Beams, precast concrete slab connection nodes, precast concrete T-beam and precast concrete slab connection nodes, precast concrete T-beam and precast concrete slab mid-beam connection nodes and precast concrete slabs. The beneficial effects of the invention are: the platform canopy columns, beams and plates are all prefabricated in the factory, which can greatly improve the construction efficiency. The columns and the foundation are connected using traditional sleeves, and their seismic performance is equivalent to that of the cast-in-place structure. The columns are connected to the beams. , steel holes are reserved in the beams, and column steel bars are inserted and anchored with anchor bolts. Its seismic performance meets the requirements of relevant specifications. The beams and plates are connected by embedded I-beam welding. Its seismic performance meets the requirements of relevant specifications. The structure is simple and can be used on large scales. Significantly reduce manual work.
Description
Technical Field
The invention relates to a platform canopy, in particular to an assembled platform canopy and an installation method thereof, and belongs to the technical field of concrete structures in structural engineering.
Background
Along with the rapid development of China high-speed railways, high-speed rail stations appear like spring bamboo shoots after rain, and medium and small high-speed rail station houses bloom more frequently. The platform canopy is used as a canopy for shielding wind and rain when passengers get on or off the bus, and is one of essential important buildings of the high-speed railway station.
The rainshed construction generally adopts a site construction mode, namely pouring from scaffold erection, formwork erection and steel bar binding to concrete, most of work is completed manually on a construction site, the labor intensity is high, the construction site is disordered, the consumption of building materials is high, more building wastes are generated on site, and meanwhile, the surrounding environment is greatly influenced. The method has the advantages of neat construction site, short construction period and incomparable application prospect of mass production in site construction mode.
At present, the high-speed railway platform canopy adopts bare concrete mostly, and the quality requirement of the bare concrete is high, and the following defects exist, namely, 1, special stirring and transporting equipment is required to be equipped. As the bare concrete has extremely high requirements on the mixing proportion, once the concrete with different mixing proportions is mixed in the stirring and transporting processes, the color difference with different degrees can appear after the pouring is finished, and the clean water effect of the concrete is difficult to ensure. 2. The quality requirement on the raw materials is high. The quality of each batch of various raw materials of the concrete should be highly stable, and the properties of the raw materials in the construction process of the bare concrete must be completely consistent. Because the construction period of the awning is relatively long, the batches and physical properties of raw materials are difficult to achieve high consistency, and the physical properties are also changed along with the change of air temperature, if the construction is performed by adopting a cast-in-situ method, the clean water effect of concrete is difficult to ensure. 3. The operation level of workers is high. The operation level of workers directly influences the appearance quality of the bare concrete, the higher level of operators are needed in the construction of the bare concrete structure, the workers are definitely separated, and the workers cannot be replaced in the whole construction period, because each construction detail influences the appearance effect after the construction is finished, and the appearance effect after the concrete is molded is different when the concrete vibrating hand is taken as an example and the vibrating time between two vibrating parts is different. Because the cast-in-situ bare concrete technical problem is difficult to solve and is limited by construction conditions and technical levels of on-site constructors, even if the quality of the template and the concrete meet engineering requirements, the clean water effect after construction is not completely ensured. 4. In order to achieve the expected effect of the bare concrete, the requirements of all links in the construction process are greatly improved, the corresponding cost is increased to different degrees, and finally the total cost is improved.
Disclosure of Invention
The invention aims to solve the problems and provide an assembled platform canopy and an installation method thereof.
The invention realizes the above purpose through the following technical scheme: the utility model provides an assembled platform canopy, includes concrete foundation, assembled precast concrete post, basis and precast concrete post connected node, precast concrete post and precast concrete T type roof beam connected node, precast concrete T type roof beam, precast concrete slab connected node, precast concrete T type roof beam and precast concrete slab center sill connected node, precast concrete slab; the concrete foundation is in butt joint with the prefabricated concrete column along the vertical direction to form foundation and prefabricated concrete column connected node, prefabricated concrete column is in butt joint with the prefabricated concrete T type roof beam along the vertical direction to form prefabricated concrete column and prefabricated concrete T type roof beam connected node, prefabricated concrete T type roof beam is in butt joint with the prefabricated concrete slab along the horizontal direction to form three different nodes: and the precast concrete slab is connected with the node, and the precast concrete T-shaped beam is connected with the precast concrete slab center sill.
The concrete foundation comprises a foundation and a 1 m Gao Xianjiao column above the foundation, the 1 m Gao Xianjiao column above the foundation is vertically arranged above the foundation, the prefabricated precast concrete column comprises a column middle longitudinal reinforcement, a column middle stirrup and a hoisting embedded inner bolt, the column middle longitudinal reinforcement and the column middle stirrup are all arranged in the prefabricated precast concrete column, the foundation and precast concrete column connecting node comprises a grouting sleeve, grouting materials, plugging rubber and a leveling cushion block, the precast concrete T-shaped beam comprises a beam middle longitudinal reinforcement, a beam middle stirrup and I-steel, the beam middle longitudinal reinforcement and the beam middle stirrup are welded together, the beam middle longitudinal reinforcement and the beam middle stirrup are all arranged in the precast concrete T-shaped beam, the precast concrete slab comprises a middle beam, an edge beam and a precast slab middle section, the middle beam and the edge beam are connected through the I-steel, and the precast slab middle section is connected with the edge beam through the hoisting embedded inner bolt.
Preferably, in order not to be restricted by construction site conditions, the prefabricated concrete column, the prefabricated concrete T-shaped beam and the prefabricated concrete slab can be transported to site installation after the conditions are met, factory prefabrication is adopted for all the prefabricated concrete column, the connection node of the foundation and the prefabricated concrete column, the connection node of the prefabricated concrete column and the prefabricated concrete T-shaped beam, the connection node of the prefabricated concrete T-shaped beam and the prefabricated concrete slab and the connection node of the prefabricated concrete T-shaped beam and the prefabricated concrete slab middle beam are all installed on site.
Preferably, in order to improve the construction efficiency and reduce the field operation difficulty, the fabricated precast concrete column, the precast concrete T-shaped beam and the precast concrete slab are integrally produced and adopt a vertical beating mode.
Preferably, in order to ensure that the earthquake-resistant performance is equivalent to that of a cast-in-situ structure, the concrete foundation, the prefabricated concrete column and the prefabricated concrete T-shaped beam are connected by adopting a traditional sleeve.
Preferably, in order to enable the earthquake resistance to meet the related standard requirements, the precast concrete T-shaped beam and the precast concrete slab are welded and fixed through embedded I-steel.
The installation method of the assembled platform canopy comprises the following steps:
(1) The foundation of the concrete foundation and the column of 1 m Gao Xianjiao above the foundation are cast in situ, the section size of the column is enlarged by 200mm within the height range of 500mm at the bottom of the cast-in-situ column and the precast column, the parting positions are connected by adopting grouting sleeves in a uniform-strength substitution mode, 20mm construction joints are designed at the parting positions, and R=30mm circular arcs are arranged at the joint positions;
(2) Arranging a flat crane embedded part, embedding an inner bolt 2.3 by adopting a 5t crane weight for lifting a die, temporarily supporting on site, and adjusting the verticality of a column;
(3) The joints of the precast concrete T-shaped beam and the middle beam and the side beams of the precast concrete slab are connected by adopting I-steel, concrete is poured after the I-steel is welded, and steel bars in the beam are welded with the I-steel, wherein the welding length is not less than 10d;
(4) The connection position of the precast concrete slab and the precast concrete T-shaped beam is reserved with steel bars on the slab, the reserved part of the steel bars only prefabricates concrete with the thickness of 50mm at the bottom, the internal embedded steel bar meshes prevent cracks, 50% lap joint of the cast steel bars in the precast concrete T-shaped beam and the reserved steel bars in the slab is performed, 50% welding is performed, the lap joint length is not less than 33d, the welding length is not less than 10d, and a 50mm concrete table is reserved at the side edge of the precast concrete T-shaped beam, so that the cast-in-situ assembly is facilitated;
(5) The positions of the hanging points are arranged at the steel beams at the two sides, the distance is not more than 2m, and three rows of hanging points are arranged.
The beneficial effects of the invention are as follows: the assembled platform canopy and the installation method thereof are reasonable in design:
the platform canopy columns, beams and plates are prefabricated by factories, so that the construction efficiency can be greatly improved, and the field operation difficulty is reduced;
the column is connected with the foundation by adopting a traditional sleeve, and the shock resistance is equal to that of a cast-in-situ structure;
the column is connected with the beam, a steel bar hole is reserved in the beam, and the column steel bar is inserted into and anchored by an anchor bolt, so that the anti-seismic performance meets the related standard requirements;
the beam is connected with the plate, and embedded I-steel is adopted for welding, so that the anti-seismic performance meets the related specification requirements;
simple structure, convenient design, processing and installation, and can greatly reduce manual operation.
Drawings
FIG. 1 is a schematic side elevational view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic diagram of a front elevation structure of the present invention;
FIG. 4 is a schematic view of a concrete foundation structure of the present invention;
FIG. 5 is a schematic view of a large sample structure of a grouting sleeve node according to the present invention;
FIG. 6 is a schematic view of a cross-sectional structure of the invention;
FIG. 7 is a schematic view of a column joint construction according to the present invention.
In the figure: 1. 1.1 parts of concrete foundation, 1.2 parts of foundation, 1 m Gao Xianjiao columns above, 2 parts of assembled precast concrete columns, 2.1 parts of longitudinal reinforcement in the columns, 2.2 parts of hooping in the columns, 2.3 parts of embedded inner bolts for hoisting, 3 parts of connecting joints of the foundation and the precast concrete columns, 3.1 parts of grouting sleeves, 3.2 parts of grouting materials, 3.3 parts of plugging rubber, 3.4 parts of leveling cushion blocks, 4 parts of connecting joints of the precast concrete columns and precast concrete T-shaped beams, 5 parts of precast concrete T-shaped beams, 5.1 parts of longitudinal reinforcement in the beams, 5.2 parts of hooping in the beams, 5.3 parts of I-steel, 6 parts of connecting joints of the precast concrete T-shaped beams and the precast concrete slabs, 8 parts of connecting joints of the precast concrete T-shaped beams and the precast concrete slabs, 9 parts of the precast concrete slabs, 9.1 parts of the middle beams, 9.2 parts of side beams and 9.3 parts of precast slabs.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 7, an assembled platform canopy comprises a concrete foundation 1, an assembled precast concrete column 2, a connection node 3 between the foundation and the precast concrete column, a connection node 4 between the precast concrete column and a precast concrete T-shaped beam, a precast concrete T-shaped beam 5, a connection node 6 between the precast concrete T-shaped beam and the precast concrete slab 7, a connection node 8 between the precast concrete T-shaped beam and a precast concrete slab center sill, and a precast concrete slab 9; the concrete foundation 1 is in butt joint with the prefabricated concrete column 2 along the vertical direction to form a foundation and prefabricated concrete column connecting node 3, the prefabricated concrete column 2 is in butt joint with the prefabricated concrete T-shaped beam 5 along the vertical direction to form a prefabricated concrete column and prefabricated concrete T-shaped beam connecting node 4, and the prefabricated concrete T-shaped beam 5 is in butt joint with the prefabricated concrete slab 9 along the horizontal direction to form three different nodes: precast concrete slab connecting node 6, precast concrete T-shaped beam and precast concrete slab connecting node 7, precast concrete T-shaped beam and precast concrete slab center sill connecting node 8.
The concrete foundation 1 comprises a foundation 1.1 and a 1 m Gao Xianjiao column 1.2 above the foundation, the 1 m Gao Xianjiao column 1.2 above the foundation is vertically arranged above the foundation 1.1, the prefabricated concrete column 2 comprises a column middle longitudinal reinforcement 2.1, a column middle stirrup 2.2 and a hoisting embedded inner bolt 2.3, the column middle longitudinal reinforcement 2.1 and the column middle stirrup 2.2 are both arranged in the prefabricated concrete column 2, the foundation and prefabricated concrete column connecting node 3 comprises a grouting sleeve 3.1, a grouting material 3.2, a plugging rubber 3.3 and a leveling cushion block 3.4, the prefabricated concrete T-shaped beam 5 comprises a beam middle longitudinal reinforcement 5.1, a beam middle stirrup 5.2 and an I-shaped steel 5.3, the beam middle longitudinal reinforcement 5.1 and the beam middle stirrup 5.2 are welded together, the column middle longitudinal reinforcement 5.1 and the beam middle stirrup 5.2 are both arranged in the prefabricated concrete T-shaped beam 5, the precast concrete T-shaped beam comprises a precast beam 9.1, a precast concrete slab 9.9, a precast beam 9.9 and a precast concrete slab 9.3, and a precast concrete slab 9.9.3 are connected with the side slab 9.2 through the side slab 3.
The prefabricated concrete column 2, the prefabricated concrete T-shaped beam 5 and the prefabricated concrete slab 9 are all prefabricated in factories, the connection node 3 of the foundation and the prefabricated concrete column, the connection node 4 of the prefabricated concrete column and the prefabricated concrete T-shaped beam, the connection node 5 of the prefabricated concrete T-shaped beam and the prefabricated concrete slab, the connection node 7 of the prefabricated concrete T-shaped beam and the connection node 8 of the prefabricated concrete T-shaped beam and the prefabricated concrete slab are all installed on site, are not limited by construction site conditions, can be transported to the site after being provided with conditions, are favorable for shortening the construction period, the prefabricated concrete column 2, the prefabricated concrete T-shaped beam 5 and the prefabricated concrete slab 9 are integrally produced, in addition, the construction efficiency can be greatly improved by adopting a vertical punching mode, the site operation difficulty is reduced, the traditional sleeve connection is adopted among the concrete foundation 1, the prefabricated concrete column 2 and the prefabricated concrete T-shaped beam 5, the anti-seismic performance of the prefabricated concrete T-shaped beam is ensured to be equal to that of a cast-in-site structure, the I-shaped concrete T-shaped beam 5 and the prefabricated concrete slab 9 are welded and fixed on site through embedding steel 5.3, and the anti-seismic performance is improved to meet relevant requirements specifications.
The installation method of the assembled platform canopy comprises the following steps:
(1) The foundation 1.1 of the concrete foundation 1 and the 1 m Gao Xianjiao column 1.2 above the foundation are cast in situ, the section size of the column is enlarged by 200mm within the height range of 500mm at the bottoms of the cast-in-situ column and the prefabricated column, the parting positions are connected by adopting grouting sleeves 3.1 and the like in a strong replacement way, 20mm construction joints are designed at the parting positions, and R=30mm circular arcs are arranged at the joint positions;
(2) Arranging a flat crane embedded part, embedding an inner bolt 2.3 by adopting a 5t crane weight for lifting a die, temporarily supporting on site, and adjusting the verticality of a column;
(3) The joints of the precast concrete T-shaped beam 5, the middle beam 9.1 and the side beams 9.2 of the precast concrete slab 9 are connected by adopting I-steel 5.3, concrete is poured after the welding of the I-steel 5.3 is finished, steel bars in the beam are welded with the I-steel 5.3, and the welding length is not less than 10d;
(4) The connection of the precast concrete slab 9 and the precast concrete T-shaped beam 5 is reserved with steel bars on the slab, the reserved part of the steel bars only precast concrete with the thickness of 50mm at the bottom, the internal embedded steel bar meshes prevent cracks, 50% overlap joint of the cast steel bars in the precast concrete T-shaped beam 5 and the reserved steel bars in the slab is realized, 50% welding is performed, the overlap joint length is not less than 33d, the welding length is not less than 10d, and the side edge of the precast concrete T-shaped beam 5 is reserved with a 50mm concrete table, so that the on-site assembly is facilitated;
(5) The positions of the hanging points are arranged at the steel beams at the two sides, the distance is not more than 2m, and three rows of hanging points are arranged.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (3)
1. An assembled platform canopy, its characterized in that: the concrete foundation comprises a concrete foundation (1), an assembled precast concrete column (2), a connection node (3) between the foundation and the precast concrete column, a connection node (4) between the precast concrete column and a precast concrete T-shaped beam, a precast concrete T-shaped beam (5), a precast concrete slab connection node (6), a connection node (7) between the precast concrete T-shaped beam and a precast concrete slab, a connection node (8) between the precast concrete T-shaped beam and a precast concrete slab middle beam and a precast concrete slab (9); the concrete foundation (1) is in butt joint with the prefabricated concrete column (2) along the vertical direction to form foundation and prefabricated concrete column connected node (3), prefabricated concrete column (2) is in butt joint with the prefabricated concrete T type roof beam (5) along the vertical direction to form prefabricated concrete column and prefabricated concrete T type roof beam connected node (4), prefabricated concrete T type roof beam (5) is in butt joint with precast concrete slab (9) along the horizontal direction to form three different nodes: the precast concrete slab connecting node (6), the precast concrete T-shaped beam and precast concrete slab connecting node (7) and the precast concrete T-shaped beam and precast concrete slab middle beam connecting node (8);
the concrete foundation (1) comprises a foundation (1.1) and a column (1.2) with a length of Gao Xianjiao above the foundation, the column (1.2) with a length of Gao Xianjiao above the foundation is vertically arranged above the foundation (1.1), the prefabricated concrete T-shaped beam (5) comprises a longitudinal reinforcement (5.1) in the beam, a stirrup (2.2) in the column and embedded inner bolts (2.3) for hoisting, the longitudinal reinforcement (2.1) in the column and the stirrup (2.2) in the column are arranged in the prefabricated concrete column (2), the connecting node (3) of the foundation and the prefabricated concrete column comprises a grouting sleeve (3.1), a grouting material (3.2), a plugging rubber (3.3) and a leveling cushion block (3.4), the prefabricated concrete T-shaped beam (5) comprises a longitudinal reinforcement (5.1) in the beam, a stirrup (5.2) in the beam and an I-shaped steel (5.3), the longitudinal reinforcement (5.1) in the beam and the I-shaped steel (5.3) are all arranged in the prefabricated concrete T-shaped beam (9.1) and the prefabricated concrete T-shaped beam (9.9) are welded together, the middle section (9.3) of the precast slab is connected with the side beam (9.2) through a pre-buried inner bolt (2.3) for hoisting;
the prefabricated precast concrete column (2), the precast concrete T-shaped beam (5) and the precast concrete slab (9) are all prefabricated in factories, and the connecting node (3) of the foundation and the precast concrete column, the connecting node (4) of the precast concrete column and the precast concrete T-shaped beam, the connecting node (6) of the precast concrete T-shaped beam (5) and the precast concrete slab, the connecting node (7) of the precast concrete T-shaped beam and the precast concrete slab and the connecting node (8) of the precast concrete T-shaped beam and the precast concrete slab are all installed on site;
the prefabricated concrete column (2), the prefabricated concrete T-shaped beam (5) and the prefabricated concrete slab (9) are produced integrally and are vertically beaten;
the concrete foundation (1), the prefabricated concrete column (2) and the prefabricated concrete T-shaped beam (5) are connected through traditional sleeves.
2. A modular platform canopy according to claim 1, wherein: the precast concrete T-shaped beam (5) and the precast concrete slab (9) are welded and fixed through embedded I-steel (5.3).
3. A method of installing an assembled platform canopy based on claim 1, wherein: the installation method comprises the following steps:
(1) The foundation (1.1) of the concrete foundation (1) and the column (1.2) of 1 m Gao Xianjiao above the foundation are cast in situ, the section size of the column is enlarged by 200mm within the height range of 500mm at the bottom of the cast-in-situ column and the prefabricated column, the parting positions are connected by strong replacement such as grouting sleeves (3.1), the parting positions are designed with 20mm construction joints, and the joint positions are provided with R=30mm circular arcs;
(2) Arranging a flat crane embedded part, embedding an inner bolt (2.3) by adopting a 5t crane weight for lifting a die, temporarily supporting on site, and adjusting the verticality of a column;
(3) The connection parts of the precast concrete T-shaped beam (5) and the middle beam (9.1) and the precast slab side beam (9.2) of the precast concrete slab (9) are connected by adopting I-steel (5.3), concrete is poured after the welding of the I-steel (5.3) is finished, and steel bars in the beam are welded with the I-steel (5.3);
(4) The connection of the precast concrete slab (9) and the precast concrete T-shaped beam (5) is provided with reserved steel bars on the slab, the reserved steel bars are only used for prefabricating concrete with the thickness of 50mm at the bottom, cracks are prevented from occurring in the inner embedded steel bar meshes, 50% lap joint is performed between the steel bars thrown out of the precast concrete T-shaped beam (5) and the reserved steel bars in the slab, 50% welding is performed, and 50mm concrete tables are reserved at the side edges of the precast concrete T-shaped beam (5), so that the on-site assembly is facilitated;
(5) The positions of the hanging points are arranged at the steel beams at the two sides, the distance is not more than 2m, and three rows of hanging points are arranged.
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| CN201910628857.0A CN110230414B (en) | 2019-07-12 | 2019-07-12 | Prefabricated platform canopy and installation method thereof |
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| CN201910628857.0A CN110230414B (en) | 2019-07-12 | 2019-07-12 | Prefabricated platform canopy and installation method thereof |
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| CN110230414B true CN110230414B (en) | 2023-10-03 |
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| CN114809734B (en) * | 2022-05-31 | 2024-03-29 | 中铁建工集团有限公司 | Construction method of assembled platform canopy |
| CN115573597B (en) * | 2022-11-02 | 2023-08-15 | 中铁建工集团有限公司 | Fully-assembled concrete canopy and construction method thereof |
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| CN117386196A (en) * | 2023-11-22 | 2024-01-12 | 中铁建设集团华北工程有限公司 | An assembled column base connection mechanism and canopy system in alpine and cold areas |
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