Fully assembled double-column concrete canopy for railway passenger station and its construction method

Abstract

The present invention discloses a fully assembled double-column concrete canopy for a railway passenger station and a construction method thereof, comprising precast concrete columns, precast concrete beams, precast concrete side panels and precast concrete middle panels; the top panel of the double-column concrete canopy comprises a precast concrete middle panel and two precast concrete side panels respectively located on both sides of the precast concrete middle panel, and the precast concrete side panels and the precast concrete middle panel are all curved special-shaped beam panels; π-shaped precast concrete beams are symmetrically installed at both ends of the precast concrete middle panel and the precast concrete side panels, and the precast concrete beams are integrally hoisted and connected to the I-shaped precast concrete columns through two fulcrums at their lower ends. The assembled double-column canopy has stronger lateral overturning resistance and overall stability, and the double-column system has a large span and can cross obstacles such as passages, which is beneficial to the multi-purpose design of the main passage between the double columns, and has a wider range of applications and stronger practicality.

Description

Technical Field

[0001] The invention relates to a double-column concrete canopy and a construction method thereof, in particular to a fully assembled double-column concrete canopy for a railway passenger station and a construction method thereof, and belongs to the technical field of railway engineering. Background Art

[0002] After the reform and opening up, the national economy has taken off rapidly, the railway construction has been strengthened, and the construction of passenger stations has ushered in new development opportunities. Railway passenger stations, especially platform canopies, are one of the important buildings that are indispensable to high-speed railway stations because of their dense passenger flow, large spatial span, and high public attention.

[0003] At present, the platform canopies of passenger stations mainly include steel structure canopies based on space grids and membrane structures and cast-in-place concrete structure canopies. Among them, the steel structure platform canopy has a large span, fast construction speed, and easy installation, but it has disadvantages such as poor durability and large wind vibration impact; the cast-in-place concrete structure canopy has the advantages of good structural durability and small wind vibration impact. However, cast-in-place construction has disadvantages such as complex construction site and slow speed. How to develop a prefabricated platform canopy system that is both safe and reliable and easy to construct has become an urgent issue to be solved. With the development and promotion of prefabricated buildings, it is of great engineering significance to develop a prefabricated concrete structure system suitable for platform canopies. Summary of the invention

[0004] The purpose of the present invention is to provide a fully assembled railway passenger station double-column concrete canopy and a construction method thereof in order to solve the above-mentioned problems.

[0005] The present invention achieves the above-mentioned object through the following technical solutions: a fully assembled railway passenger station double-column concrete canopy, including precast concrete columns, precast concrete beams, precast concrete side panels and precast concrete middle panels;

[0006] The top plate of the double-column concrete canopy includes a precast concrete middle plate and two precast concrete side plates respectively located on both sides of the precast concrete middle plate, and the precast concrete side plates and the precast concrete middle plate are both curved special-shaped beam plates;

[0007] Pi-shaped precast concrete beams are symmetrically installed at both ends of the precast concrete middle plate and the precast concrete side plate. The precast concrete beams are hoisted in an integral manner and connected to the center of the I-shaped precast concrete columns through two supporting points at the lower ends thereof.

[0008] Preferably, the precast concrete beam is symmetrically provided with side beam corbel supports and middle beam corbel supports.

[0009] Preferably, the connection between the lower end of the precast concrete column and the steel bars of the external cast-in-place foundation is a grouting connection; and the connection between the upper end of the precast concrete column and the steel bars of the lower end of the precast concrete beam is a sleeve grouting connection.

[0010] Preferably, both ends of the precast concrete side slab are provided with side beam corbels, and both ends of the precast concrete middle slab are provided with middle beam corbels;

[0011] The side beam corbel is supported on the side beam corbel support by a support pad provided on the precast concrete beam;

[0012] The center beam corbel is supported on the center beam corbel support through a support pad block arranged on the precast concrete beam.

[0013] Preferably, a sunken drainage ditch is provided between the precast concrete side plate and the precast concrete middle plate; and a vertical rainwater pipe is provided in the I-shaped groove of the precast concrete column.

[0014] Preferably, the precast concrete side plate comprises a side beam and a side plate; side beam corbels are provided at both ends of the side beam.

[0015] Preferably, the precast concrete middle plate comprises a middle beam and a middle plate; both ends of the middle beam are provided with middle beam corbels.

[0016] A construction method for a fully assembled double-column concrete canopy for a railway passenger station, the construction method comprising the following steps:

[0017] 1) Adjustment of external cast-in-place foundation steel bars. After the cast-in-place canopy concrete foundation is completed, it is repeatedly adjusted according to the positioning requirements of the drawings to prepare for the smooth docking and anchoring of precast concrete columns;

[0018] 2) Production of precast canopy concrete components, production of precast concrete columns, precast concrete beams (2), precast concrete side panels and precast concrete middle panels;

[0019] 3) Installation of precast concrete columns: Use a crane to hoist the precast concrete columns, complete the connection between the precast concrete columns and the external cast-in-place foundation, and ensure the verticality of the columns and the relative position of the two columns;

[0020] 4) Adjust the reinforcement of the precast concrete column and make repeated adjustments according to the positioning requirements of the drawings to prepare for the smooth docking and anchoring of the precast concrete beam;

[0021] 5) Installation of precast concrete beams: After the lower part of the precast concrete beam and the support frames on both sides are erected, use a crane to hoist the precast concrete beams. Repeatedly adjust before alignment to ensure that the left and right beam column piers and the lower precast column steel bars are accurately aligned. After completion, re-measure and check to ensure the accuracy of the beam elevation;

[0022] 6) Installation of precast concrete beams and slabs. After the precast concrete beams are accurately installed, first hoist the precast concrete middle slab, then hoist the precast concrete side slabs on the left and right sides to complete the structural construction of the double-column canopy.

[0023] The beneficial effects of the present invention are: the system is reasonably designed, the force transmission path is clear and simple; the canopy components are basically 100% prefabricated, the industrialization degree is high, the concrete molding quality is good, and it is conducive to the promotion of plain concrete; there is basically no wet operation on site, there is less garbage on site, and the construction site is clean and beautiful. All components of the assembled concrete platform canopy can be processed in the factory and transported to the site for hoisting and installation. It has a high degree of industrialization, is easy to install on site, has good economic and social benefits, and is suitable for promotion and use.

[0024] This assembled double-column canopy has stronger lateral anti-overturning and overall stability. The double-column system has a large span and can cross obstacles such as passages (such as luggage passages), which is conducive to the multi-purpose design of the main passage between the double columns, has a wider range of applications, and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0026] Figure 2 for Figure 1 A three-dimensional schematic diagram of the precast concrete side panel shown;

[0027] Figure 3 for Figure 1 A three-dimensional schematic diagram of a precast concrete mid-slab is shown;

[0028] Figure 4 for Figure 1 A three-dimensional schematic diagram of the precast concrete beam shown;

[0029] In the figure: 1. precast concrete column, 2. precast concrete beam, 3. precast concrete side plate, 4. precast concrete middle plate, 5. support pad, 6. side beam, 7. middle beam, 8. middle beam corbel, 9. side beam corbel, 10. side plate, 11. middle plate, 12. side beam corbel support, 13. middle beam corbel support. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figure 1 As shown: a fully assembled double-column concrete canopy for a railway passenger station, comprising a precast concrete column 1, a precast concrete beam 2, a precast concrete side plate 3 and a precast concrete middle plate 4.

[0032] The top plate of the double-column concrete canopy includes a precast concrete middle plate 4 and two precast concrete side plates 3; the two precast concrete side plates 3 are respectively located on both sides of the precast concrete middle plate 4, and the precast concrete side plates 3 and the precast concrete middle plate 4 are both curved special-shaped beam plates.

[0033] like Figure 2 As shown: the precast concrete side plate 3 includes a side beam 6 and a side plate 10 , the side beam 6 and the side plate 10 are integrally formed, and side beam corbels 9 are arranged at both ends of the side beam 6 .

[0034] like Figure 3 As shown: the precast concrete middle plate 4 includes a middle beam 7 and a middle plate 11, the middle beam 7 and the middle plate 11 are integrally formed, and middle beam corbels 8 are provided at both ends of the middle beam.

[0035] The precast concrete side plates 3 and the precast concrete middle plates 4 are all curved special-shaped beam plates.

[0036] like Figure 1 and Figure 4 As shown: π-shaped precast concrete beams 2 are symmetrically installed at both ends of the precast concrete middle plate 4 and the precast concrete side plate 3. The precast concrete beams 2 are hoisted and connected to the I-shaped precast concrete columns 1 through two supporting points at their lower ends.

[0037] The precast concrete beam 2 is symmetrically provided with a side beam corbel support 12 and a center beam corbel support 13. The side beam corbel 9 is supported on the side beam corbel support 12 by a support pad 5 provided on the precast concrete beam 2; the center beam corbel 8 is supported on the center beam corbel support 13 by a support pad 5 provided on the precast concrete beam 2, thereby forming an inter-bracing matching system.

[0038] The steel bar connection method between the lower end of the precast concrete column 1 and the external cast-in-place foundation (column) is a reliable connection method such as sleeve grouting connection; the steel bar connection between the upper end of the precast concrete column 1 and the lower end of the precast concrete beam 2 is a reliable connection method such as sleeve grouting connection, so that the workload of steel bar binding and template installation at the construction site is small and the construction speed is fast.

[0039] A sunken drainage ditch is arranged between the precast concrete side plate 3 and the precast concrete middle plate 4, and a vertical rainwater pipe is arranged in the I-shaped groove of the precast concrete column 1, which not only forms a concealed drainage system for the double-column concrete canopy, but also has a beautiful appearance.

[0040] A construction method for a fully assembled double-column concrete canopy for a railway passenger station, the construction method comprising the following steps:

[0041] First: Adjustment of external cast-in-place foundation steel bars. After the cast-in-place canopy concrete foundation is completed, it is adjusted repeatedly according to the positioning requirements of the drawings to prepare for the smooth docking and anchoring of the precast concrete column 1;

[0042] Second: production of precast canopy concrete components, production of precast concrete columns 1, precast concrete beams 2, precast concrete side panels 3 and precast concrete middle panels 5;

[0043] Third: installation of precast concrete column 1, using a crane to hoist precast concrete column 1, completing the connection between precast concrete column 1 and the external cast-in-place foundation, ensuring the verticality of the column and the relative position of the two columns;

[0044] Fourth: Adjust the reinforcement of the precast concrete column 1 repeatedly according to the positioning requirements of the drawing to prepare for the smooth docking and anchoring of the precast concrete beam 2;

[0045] Fifth: Installation of precast concrete beam 2. After the lower part of the precast concrete beam 2 and the support frames on both sides are erected, use a crane to hoist the precast concrete beam 2. Repeatedly adjust before alignment to ensure that the left and right beam column piers and the lower precast column steel bars are accurately aligned. After completion, re-measure and check to ensure the accuracy of the beam elevation;

[0046] Sixth: Installation of precast concrete beams and slabs. After the precast concrete beams 2 are accurately installed, first hoist the precast concrete middle slab 4, and then hoist the precast concrete side slabs 3 on the left and right sides to complete the structural construction of the double-column canopy.

[0047] Working principle: When using the fully assembled double-column concrete canopy of the railway passenger station, the upper and lower ends of the precast concrete column 1 are respectively connected to the precast concrete beam 2 and the external cast-in-place foundation (column) by sleeve grouting, grout anchor lap joint or other reliable connection methods. The workload of steel bar binding and formwork installation at the construction site is small, and the construction speed is fast. The four points at both ends of the precast concrete beam slab are supported on the top surface of the precast π-beam corbel support through support pads to form a simply supported lap joint system.

[0048] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A construction method for a fully assembled double-column concrete canopy for a railway passenger station, characterized in that: The fully assembled double-column concrete canopy for a railway passenger station comprises a precast concrete column (1), a precast concrete beam (2), a precast concrete side plate (3) and a precast concrete middle plate (4); The top plate of the double-column concrete canopy comprises a precast concrete middle plate (4) and two precast concrete side plates (3) respectively located on both sides of the precast concrete middle plate (4), and the precast concrete side plates (3) and the precast concrete middle plate (4) are both curved special-shaped beam plates; π-shaped precast concrete beams (2) are symmetrically mounted at both ends of the precast concrete middle plate (4) and the precast concrete side plate (3); the precast concrete beams (2) are integrally hoisted and connected to the center of the I-shaped precast concrete columns (1) via two fulcrums at their lower ends; The precast concrete beam (2) is symmetrically provided with a side beam corbel support (12) and a middle beam corbel support (13); the lower end of the precast concrete column (1) is connected to the steel bars of the external cast-in-place foundation by grouting; the upper end of the precast concrete column (1) is connected to the steel bars of the lower end of the precast concrete beam (2) by sleeve grouting; both ends of the precast concrete side plate (3) are provided with side beam corbels (9), and both ends of the precast concrete middle plate (4) are provided with middle beam corbels (8); the side beam corbels (9) are supported on the side beam corbel supports (12) by means of support pads (5) provided on the precast concrete beam (2); the middle beam corbels (8) are supported on the middle beam corbel supports (13) by means of support pads (5) provided on the precast concrete beam (2); A sunken drainage ditch is provided between the precast concrete side plate (3) and the precast concrete middle plate (4); a vertical rainwater pipe is provided in the I-shaped groove of the precast concrete column (1); The precast concrete side plate (3) comprises a side beam (6) and a side plate (10); both ends of the side beam (6) are provided with side beam corbels (9); the precast concrete middle plate (4) comprises a middle beam (7) and a middle plate (11); both ends of the middle beam (7) are provided with middle beam corbels (8); The construction method comprises the following steps: 1) Adjustment of external cast-in-place foundation steel bars. After the cast-in-place canopy concrete foundation is completed, it is repeatedly adjusted according to the positioning requirements of the drawings to prepare for the smooth docking and anchoring of the precast concrete column (1); 2) Production of precast concrete canopy components, including production of precast concrete columns (1), precast concrete beams (2), precast concrete side panels (3) and precast concrete middle panels (4); 3) Installation of the precast concrete column (1): using a crane to hoist the precast concrete column (1), completing the connection between the precast concrete column (1) and the external cast-in-place foundation, and ensuring the verticality of the column and the relative position of the two columns; 4) Adjust the reinforcement of the precast concrete column (1) and make repeated adjustments according to the positioning requirements of the drawings to prepare for the smooth docking and anchoring of the precast concrete beam (2); 5) Installation of the precast concrete beam (2). After the lower part of the precast concrete beam (2) and the supporting frames on both sides are erected, the precast concrete beam (2) is hoisted by a crane. Before alignment, adjustments are made repeatedly to ensure that the left and right beam column piers are accurately aligned with the lower precast column reinforcement. After completion, re-measurement and verification are performed to ensure that the beam elevation is accurate. 6) Installation of precast concrete beams and slabs: After the precast concrete beams (2) are accurately installed, the precast concrete middle slab (4) is hoisted first, and then the precast concrete side slabs (3) on the left and right sides are hoisted to complete the structural construction of the double-column canopy.

Images