Fabricated inter-line stand column concrete canopy and construction method thereof

Abstract

The invention relates to the field of building facilities, in particular to a fabricated inter-line stand column concrete canopy and a construction method thereof.The concrete canopy comprises at least two prefabricated secondary beams, the top of each prefabricated secondary beam comprises a middle protrusion, a left outer edge and a right edge, and the left outer edge and the right edge are connected to the two sides of the middle protrusion; a first prefabricated slab is arranged between any two adjacent prefabricated secondary beams, the left side of the first prefabricated slab is arranged on the upper surface of the right edge / left edge of the current prefabricated secondary beam, and the right side of the first prefabricated slab is arranged on the upper surface of the left edge / right edge of the adjacent prefabricated secondary beam. Concrete is poured on the top of the middle protrusion, the top of the first prefabricated plate and the area located on the left edge / the right edge, lightweight aggregate concrete is arranged on the top of the first prefabricated plate, the top of the concrete and the top of the lightweight aggregate concrete are flush, and a waterproof layer is jointly laid on the concrete and the top of the lightweight aggregate concrete.

Description

Technical Field

[0001] This invention relates to the field of building facilities, and more particularly to a prefabricated concrete canopy with inter-line columns and its construction method. Background Technology

[0002] Precast concrete awnings are prefabricated structures in factories or on-site. They are mainly used at building entrances, above windows, and other locations to shield against rain and sunlight. On the one hand, they provide a relatively dry and comfortable transition space for people entering and exiting buildings. On the other hand, they effectively prevent rainwater from directly eroding the building facade, doors, windows, and other components, reducing erosion and extending the service life of building components.

[0003] In terms of construction, precast slab canopies have significant efficiency advantages. They only need to be transported to the construction site for assembly and installation, which greatly reduces on-site concrete pouring, component processing and other procedures, shortens on-site operation time, thereby compressing the overall construction period, reducing labor and material consumption costs, and meeting the needs of efficient construction.

[0004] However, traditional precast slab canopies have significant drawbacks in structural design and installation: First, the positioning accuracy of the upper and lower precast slabs is difficult to control, and misalignment is prone to occur during installation, affecting the overall structural flatness; Second, the slabs are often connected by simple placement or simplistic grouting, resulting in weak connection nodes and a lack of reliable displacement restraint. When subjected to horizontal loads such as earthquakes or strong winds, the precast slabs are prone to relative sliding or separation, which may lead to structural damage in severe cases; Third, with natural settlement and temperature deformation during long-term use, cracks are prone to appear at the joints of the precast slabs, allowing rainwater to easily seep into the building's interior, resulting in poor waterproofing performance; Fourth, in fire scenarios, the joints become channels for the spread of flames and high-temperature smoke, accelerating the spread of fire and significantly reducing the fire safety of the canopy and even the entire building.

[0005] In view of this, the present invention is hereby proposed. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and propose a prefabricated concrete canopy with column support between prefabricated sections and its construction method. The concrete canopy structure of this invention is stable, the prefabricated slabs will not shake or shift, and it can absorb vibration energy to a certain extent. At the same time, it has excellent water resistance and fire resistance.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: On one hand, the present invention provides a prefabricated concrete canopy for inter-line columns, including at least two prefabricated secondary beams. The top of each prefabricated secondary beam includes a central protrusion and a left outer edge and a right outer edge connecting its two sides. A first prefabricated slab is provided between any two adjacent prefabricated secondary beams. The left side of the first prefabricated slab is located on the upper surface of the right / left edge of the current prefabricated secondary beam, and the right side is located on the upper surface of the left / right edge of the adjacent prefabricated secondary beam. Concrete is poured on the top of the central protrusion and the top of the first prefabricated slab, and in the area located on the left / right edge. Lightweight aggregate concrete is provided on the top of the first prefabricated slab. The tops of the concrete and the lightweight aggregate concrete are flush and together covered with a waterproof layer.

[0008] Furthermore, it also includes two second precast slabs. One of the second precast slabs is located on the left edge of the left end precast secondary beam, and a concrete upper surface is poured on the top surface of the second precast slab in the area located on the left edge. The other second precast slab is located on the upper surface of the right edge of the right end precast secondary beam, and concrete is poured on the top surface of the second precast slab in the area located on the right edge.

[0009] Furthermore, the top of the second precast slab is provided with lightweight aggregate concrete, which is flush with the top surface of the lightweight aggregate concrete, and a waterproof layer is laid on top of the lightweight aggregate concrete.

[0010] Furthermore, rubber supports are placed between the precast secondary beams at both ends and the second precast slab, and grout is filled between them for connection and fixation.

[0011] Furthermore, the second precast slab includes a semi-arched structure and an overlap connecting either side thereof, the lower surface of which matches the upper surface structure of the left and right edges.

[0012] Furthermore, a rubber support is provided between each of the precast secondary beams and the first precast slab, and grout is filled between them for connection and fixation.

[0013] Furthermore, the first precast slab includes a central arched structure and a left and right overlapping edge connected at both ends thereto. The lower surface of the left overlapping edge is adapted to the upper surface structure of the left side edge, and the lower surface of the right overlapping edge is adapted to the upper surface structure of the right side edge.

[0014] Furthermore, the lightweight aggregate concrete is ceramsite concrete.

[0015] Furthermore, the upper surface of the central protrusion of the precast secondary beam is serrated.

[0016] On the other hand, the present invention also provides a construction method for the prefabricated concrete canopy with column supports as described above, comprising the following steps: S1. Fix the precast secondary beams to the foundation at intervals; S2. Place rubber supports on the left / right edge of the precast secondary beam, and overlap the first precast slab on the rubber supports. Then overlap the second precast slab on the rubber supports on the left / right edge of the precast secondary beams at both ends. S3. Grouting material is filled at the joint between the precast secondary beam and the first precast slab, and grouting material is filled at the joint between the precast secondary beam and the second precast slab. S4. Lightweight aggregate concrete is laid on top of the first and second precast slabs. Concrete is then poured on top of the precast secondary beams, the first precast slab, the precast secondary beams, and the second precast slabs, so that the concrete is flush with the upper surface of the lightweight aggregate concrete. S5. Lay a waterproof layer on the upper surface of the post-cast columns and lightweight aggregate concrete.

[0017] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention splices together the precast secondary beam, the first / second precast slab and the post-cast column, which can achieve precise positioning of the first / second precast slab, quick fixation without gaps, and enable the entire canopy structure to bear a large vertical load. At the same time, it extends the natural vibration period of the structure and reduces the horizontal ground vibration effect. This ensures construction efficiency while also improving the stability and lifespan of the canopy. (2) The present invention fills the space between the waterproof layer and the first / second precast slab with lightweight aggregate concrete, which reduces the load on the precast secondary beam and the first / second precast slab, while effectively improving the stability, heat resistance, fire resistance and waterproof performance of the structure. (3) By filling the grout and pouring the post-cast columns, the present invention can limit the shaking and displacement between the precast secondary beam and the precast slab, and prevent cracks from appearing at the connection between the precast secondary beam and the first / second precast slab, which would lead to an unstable canopy structure or water leakage in the canopy. (4) The present invention is provided with rubber supports at the connection between the first / second precast slab and the precast secondary beam, so that the canopy structure can reduce the horizontal seismic action and further reduce earthquake disasters. Attached Figure Description

[0018] The accompanying drawings are incorporated in and form part of this specification, and together with the description serve to explain the principles of the invention.

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall prefabricated structure of the concrete canopy of the present invention; Figure 2 This is a structural diagram of the concrete canopy before the waterproof layer is laid. Figure 3 This is a schematic diagram of the prefabricated secondary beam of the present invention; Figure 4 This is a schematic diagram of the structure of the first precast panel of the present invention; Figure 5 This is a schematic diagram of the post-cast column structure of the present invention.

[0021] Wherein: 1 is the precast secondary beam; 11 is the middle protrusion; 12 is the left outer edge; 13 is the right edge; 2 is the first precast slab; 3 is lightweight aggregate concrete; 4 is the second precast slab; 5 is the rubber bearing; 6 is the waterproof layer; 7 is the post-cast column. Detailed Implementation

[0022] Exemplary embodiments will now be described in detail. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples consistent with some aspects of the invention as detailed in the appended claims.

[0023] Example 1 Please see Figures 1-5 This invention provides a prefabricated concrete canopy for inter-line columns, comprising two prefabricated secondary beams 1. Each prefabricated secondary beam 1 has a central protrusion 11 and a left outer edge 12 and a right outer edge 13 connecting its two sides. A first prefabricated slab 2 is provided between any two adjacent prefabricated secondary beams 1. The left side of the first prefabricated slab 2 is located on the upper surface of the right outer edge 13 / left outer edge 12 of the current prefabricated secondary beam 1, and the right side is located on the upper surface of the left outer edge 12 / right outer edge 13 of the adjacent prefabricated secondary beam 1. Concrete 7 is poured on the top of the central protrusion 11 and the top of the first prefabricated slab 2 in the area located on the left outer edge 12 / right outer edge 13. Lightweight aggregate concrete 3 is provided on the top of the first prefabricated slab 2. The tops of the concrete 7 and the lightweight aggregate concrete 3 are flush and together covered with a waterproof layer 6.

[0024] like Figure 2 As shown, it also includes two second precast slabs 4. One of the second precast slabs 4 is located on the left edge 12 of the left end precast secondary beam 1. The top surface of the second precast slab 4, in the area located on the left edge 12, is filled with concrete 7. The other second precast slab 4 is located on the right edge 13 of the right end precast secondary beam 1. The top surface of the second precast slab 4, in the area located on the right edge 13, is filled with concrete 7.

[0025] In this embodiment, the precast secondary beam 1, the first precast slab 2 / second precast slab 4 and the concrete 7 are fixedly connected to achieve precise positioning of the first precast slab 2 / second precast slab 4, improve the assembly efficiency of the canopy, and at the same time limit the shaking and displacement between the precast secondary beam 1 and the first precast slab 2 / second precast slab 4.

[0026] Furthermore, a lightweight aggregate concrete 3 is provided on the top of the second precast slab 4, the concrete 7 is flush with the top surface of the lightweight aggregate concrete 3, and a waterproof layer 6 is laid on the top of the lightweight aggregate concrete 3.

[0027] like Figure 1 , 2 As shown, rubber supports 5 are placed between the precast secondary beams 1 at both ends and the second precast slab 4, and grout is filled between them for connection and fixation.

[0028] like Figure 1 , 2 As shown, the second precast slab 4 includes a semi-arched structure and an overlapping edge connecting either side. This enhances the structural aesthetics while distributing the pressure along the curve, making the entire canopy structure more stable. The lower surface of the overlapping edge matches the upper surface structure of the left edge 12 and the right edge 13. Lightweight aggregate concrete 3 is laid on the curved surface of the semi-arched structure, ensuring its height matches the highest point of the curved surface of the second precast slab 4.

[0029] Specifically, a rubber bearing 5 is installed between the upper surface of the left side edge 12 of the left precast secondary beam 1 and the lower surface of the overlap edge of the second precast slab 4, and grouting material is filled between the precast secondary beam 1 and the overlap edge. The rubber bearing 5 is composed of multiple layers of steel plates and multiple layers of rubber stacked alternately. To ensure the service life of the rubber bearing 5, an anti-aging protective adhesive can be wrapped around the outer layer of the rubber bearing 5. The structure of the rubber bearing 5 can be the same as the upper surface structure of the left side edge 12 and the right side edge 13, and can be customized.

[0030] Furthermore, rubber supports 5 are placed between the two precast secondary beams 1 and the first precast slab 2, and grout is filled between them for connection and fixation.

[0031] like Figure 4 As shown, the first precast slab 2 includes a central arched structure and left and right overlapping edges connecting its two ends. While enhancing the structural aesthetics, the pressure borne by the first precast slab 2 is distributed along the curve, making the entire canopy structure more stable. The lower surface of the left overlapping edge is adapted to the upper surface structure of the left edge 12, and the lower surface of the right overlapping edge is adapted to the upper surface structure of the right edge 13. Lightweight aggregate concrete 3 is laid on the curved surface of the arched structure, ensuring its height matches the highest point of the curved surface of the first precast slab 2.

[0032] Specifically, a rubber support 5 is provided between the upper surface of the right edge 13 of the left precast secondary beam 1 and the lower surface of the left overlap edge of the first precast slab 2, and a rubber support 5 is provided between the upper surface of the left edge 12 of the right precast secondary beam 1 and the lower surface of the right overlap edge of the first precast slab 2. Grouting material is also used to fill the spaces between the precast secondary beam 1 and both the right edge 13 and the left edge 12.

[0033] In this embodiment, the filling grout further restricts the vibration and displacement between the precast secondary beam 1 and the precast slab. The grout is a Class I grout, which has high strength and high fluidity, making it easy to construct while ensuring structural strength. The waterproof layer 6 can achieve the purpose of waterproofing the canopy by relying on the compactness of the structural components themselves or by using rigid materials. The waterproof layer 6 can be laid in place with FS101 mortar or a precast polyurethane waterproof layer. By setting rubber supports 5, the arched precast slab can reduce horizontal seismic forces and mitigate earthquake damage.

[0034] In this embodiment, the lightweight aggregate concrete 3 is ceramsite concrete, which can effectively improve the fire resistance of the concrete canopy while reducing the overall structural load. The precast secondary beam 1 is preferably a precast concrete secondary beam.

[0035] like Figure 3 As shown, the upper surface of the middle protrusion of the precast secondary beam 1 is serrated.

[0036] Example 2 This embodiment proposes a construction method for the above-mentioned prefabricated concrete canopy with column supports between prefabricated sections, including the following steps: S1. Fix the two precast secondary beams 1 at intervals on the foundation according to the design requirements; S2. Place a rubber support 5 on the right edge 13 of the left precast secondary beam 1, and overlap the left edge of the first precast slab 2 on the rubber support 5. Place a rubber support 5 on the left edge 12 of the right precast secondary beam 1, and overlap the right edge of the first precast slab 2 on the rubber support 5. Then overlap the second precast slab 4 on the rubber support 5 on the left edge 12 of the left precast secondary beam 1, and overlap another second precast slab 4 on the rubber support 5 on the right edge 13 of the right precast secondary beam 1. S3. Grouting material is filled at the joint between the precast secondary beam 1 and the first precast slab 2, and grouting material is filled at the joint between the precast secondary beam 1 and the second precast slab 4. S5. Lightweight aggregate concrete 3 is laid on top of the first precast slab 2 and the second precast slab 4. Concrete 7 is poured on the top of the middle protrusion 11 of the precast secondary beam 1 and on the left edge of the first precast slab 2. At the same time, concrete 7 is poured on the edge of the second precast slab 4 so that the upper surface of the lightweight aggregate concrete 3 is flush with the upper surface of the post-cast column 7. According to the construction needs, a partition is temporarily placed between the lightweight aggregate concrete 3 and the concrete 7 to separate the two. The partition is removed after the concrete 7 is partially solidified. S5. Lay a waterproof layer 6 on the upper surface of concrete 7 and lightweight aggregate concrete 3.

[0037] In this embodiment, the precast secondary beams and precast slabs are cast in the factory according to a special beam template structure with an upper convex shape and a lower arc shape that meets the size requirements, and are transported to the construction site in advance; the waterproof layer 6 can be determined according to the design requirements, and can be precast and installed on site, or it can be laid later.

[0038] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention.

[0039] It should be understood that the present invention is not limited to the content already described above, and various modifications and changes can be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A prefabricated concrete canopy with inter-line columns, characterized in that, The structure includes at least two precast secondary beams (1), each of which has a central protrusion (11) and a left outer edge (12) and a right edge (13) connecting its two sides. A first precast slab (2) is provided between any two adjacent precast secondary beams (1), and the left side of the first precast slab (2) is provided on the upper surface of the right edge (13) / left edge (12) of the current precast secondary beam (1), and the right side is provided on the upper surface of the left edge (12) / right edge (13) of the adjacent precast secondary beam (1). Concrete (7) is poured on the top of the central protrusion (11) and the top of the first precast slab (2) in the area located on the left edge (12) / right edge (13). Lightweight aggregate concrete (3) is provided on the top of the first precast slab (2), and the tops of the concrete (7) and the lightweight aggregate concrete (3) are flush and together covered with a waterproof layer (6).

2. The prefabricated concrete canopy with vertical columns according to claim 1, characterized in that, It also includes two second precast slabs (4), one of which is located on the left edge (12) of the left end precast secondary beam (1), and the top surface of the second precast slab (4) is filled with concrete (7) in the area on the left edge (12), and the other second precast slab (4) is located on the right edge (13) of the right end precast secondary beam (1), and the top surface of the second precast slab (4) is filled with concrete (7) in the area on the right edge (13).

3. The prefabricated concrete canopy for line columns according to claim 2, characterized in that, The top of the second precast slab (4) is provided with lightweight aggregate concrete (3), the concrete (7) is flush with the top surface of the lightweight aggregate concrete (3), and a waterproof layer (6) is laid on the top of the lightweight aggregate concrete (3).

4. The prefabricated concrete canopy for line columns according to claim 2, characterized in that, Both ends of the precast secondary beam (1) are padded with rubber supports (5) between them and the second precast slab (4), and grout is filled between them for connection and fixation.

5. The prefabricated concrete canopy for line columns according to claim 2, characterized in that, The second precast slab (4) includes a semi-arched structure and an overlap connecting either side thereof, the lower surface of which matches the upper surface structure of the left edge (12) and the right edge (13).

6. The prefabricated concrete canopy for line columns according to claim 1, characterized in that, A rubber support (5) is placed between any of the precast secondary beams (1) and the first precast slab (2), and grout is filled between them for connection and fixation.

7. The prefabricated concrete canopy for line columns according to claim 1, characterized in that, The first precast slab (2) includes an arched structure in the middle and a left edge and a right edge connecting its two ends. The lower surface of the left edge is adapted to the upper surface structure of the left edge (12), and the lower surface of the right edge is adapted to the upper surface structure of the right edge (13).

8. The prefabricated concrete canopy for line columns according to claim 1, characterized in that, The lightweight aggregate concrete (3) is ceramsite concrete.

9. The prefabricated concrete canopy with vertical columns according to claim 1, characterized in that, The upper surface of the middle protrusion of the precast secondary beam (1) is serrated.

10. A construction method for a prefabricated concrete canopy with inter-line columns as described in any one of claims 2 to 9, characterized in that, Includes the following steps: S1. Fix the precast secondary beams (1) at intervals on the foundation; S2. Place rubber supports (5) on the left edge (12) / right edge (13) of the precast secondary beam (1), overlap the first precast slab (2) on the rubber supports (5), and then overlap the second precast slab (4) on the rubber supports (5) on the left edge (12) / right edge (13) of the precast secondary beam (1) at both ends. S3. Grouting material is filled at the joint between the precast secondary beam (1) and the first precast slab (2), and grouting material is filled at the joint between the precast secondary beam (1) and the second precast slab (4). S4. Lightweight aggregate concrete (3) is laid on the top of the first precast slab (2) and the second precast slab (4). Concrete (7) is then poured on the top of the precast secondary beam (1), the first precast slab (2), the precast secondary beam (1), and the second precast slab (4) so ​​that the concrete (7) is flush with the upper surface of the lightweight aggregate concrete (3). S5. A waterproof layer (6) is laid on the upper surface of the post-cast column (7) and the lightweight aggregate concrete (3).

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