Steel-concrete composite beam-slab integrated unit for high-performance grain storage and installation method thereof

Abstract

The present invention is a steel-concrete composite beam-slab integrated unit for high-performance grain depots and an installation method thereof, wherein the composite beam-slab integrated unit comprises a concrete precast panel, a steel beam and connecting steel bars; the connecting steel bars are connected between the steel beam and the concrete precast panel, so that the three are connected to form a composite beam-slab integrated unit with a groove-shaped cross section; both ends of the steel beam are provided with extensions. The installation method comprises the following steps: S1: a steel bracket is provided on the roof main beam or truss; S2: the composite beam-slab integrated unit is hoisted; and the extension is placed on the steel bracket and fixed; S3: the remaining composite beam-slab integrated units are hoisted in the manner of S2, and adjacent composite beam-slab integrated units are fixedly connected; S4: the surface layer concrete is poured on the concrete precast panel. The beneficial effects of the present invention are as follows: the composite beam-slab integrated unit realizes the on-site construction of the roof concrete structure without support and formwork, which can significantly speed up the construction speed and reduce the on-site construction cost.

Description

Technical Field

[0001] The present invention relates to the field of building technology, in particular to a steel-concrete composite beam and slab integrated unit for a high-performance grain depot and an installation method thereof. Background Art

[0002] At present, the span of general grain flat warehouses is generally required to be greater than 18 m, and the eave height of the houses is generally required to be greater than 10 m. To improve the heat preservation performance of the roof, a natural ventilation roof with a double-layer roof panel is a common form at present. To ensure the airtightness of the roof, the lower roof panel usually adopts the cast-in-place concrete process. This requires setting up tall supports and laying formwork on site, with a complex support system, high cost, and great danger. The bottom surface of the lower roof is flat, which is beneficial to the daily maintenance of the grain depot. Therefore, the main and secondary beams of the floor slab need to be turned up, which brings difficulties to the formwork support of concrete components. Summary of the Invention

[0003] The purpose of the present invention is to provide a steel-concrete composite beam and slab integrated unit for a high-performance grain depot and an installation method thereof, which can improve the construction speed and quality of the project and reduce the cost.

[0004] The present invention is realized through the following technical solutions: A steel-concrete composite beam and slab integrated unit for a high-performance grain depot, which includes

[0005] A precast concrete slab 2, which is a reinforced concrete slab with a bidirectional steel mesh 2-2 embedded therein;

[0006] Steel beams 1, which are steel beams respectively arranged above the front side and the rear side of the top surface of the precast concrete slab 2 and extend in the left-right direction;

[0007] A number of connecting steel bars 3, which are annular and are distributed at intervals along the extension direction of the steel beam 1 on the bottom surface of the steel beam 1;

[0008] Among them, the connecting steel bar 3 is connected between the steel beam 1 and the precast concrete slab 2, so that the connecting steel bar 3, the steel beam 1 and the precast concrete slab 2 are connected to form a composite beam and slab integrated unit 6 with a trough-shaped cross section;

[0009] Both ends of the steel beam 1 are provided with extension parts.

[0010] An installation method for a steel-concrete composite beam and slab integrated unit for a high-performance grain depot, which includes the following steps:

[0011] S1: A steel corbel 5 is arranged on the lower side surface of the main roof beam or truss 4;

[0012] S2: Hoist the composite beam and slab integrated unit 6; and place the extension part on the top surface of the steel corbel 5 and weld it for fixation;

[0013] S3: Hoist and install the remaining integrated composite beam and slab units 6 in the same manner as in step 2, and fix them by welding batten plates 7 between adjacent integrated composite beam and slab units 6;

[0014] S4: Pour the surface concrete on the precast concrete slab.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The integrated composite beam and slab unit described in the present invention can realize the construction of the roof concrete structure without bracing and formwork on site, which can significantly accelerate the construction speed and reduce the on-site construction cost.

[0017] 2. The bottom surface of the integrated composite beam and slab unit is flat, and no reinforcement bars protrude from the side of the slab, reducing the formwork cost of precast concrete components and significantly reducing the precast cost.

[0018] 3. After the construction is completed, the bottom surface of the bottom structure of the grain depot roof is flat, meeting the process design requirements; it can achieve the same airtight performance as cast-in-place concrete. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the integrated composite beam and slab unit of the present invention;

[0020] Figure 2 It is a side view of the integrated composite beam and slab unit of the present invention;

[0021] Figure 3 It is a schematic structural diagram of the steel beam of the present invention;

[0022] Figure 4 It is a schematic structural diagram of the precast concrete slab of the present invention;

[0023] Figure 5 The first step of the installation steps of the present invention;

[0024] Figure 6 The second step of the installation steps of the present invention;

[0025] Figure 7 The third step of the installation steps of the present invention;

[0026] Figure 8 The fourth step of the installation steps of the present invention.

[0027] Label description: 1 steel beam, 1-1 end plate, 1-2 extended steel, 2 precast concrete slab, 2-1 truss reinforcement, 2-2 bidirectional steel mesh, 3 connecting reinforcement, 4 truss, 5 steel corbel, 6 integrated composite beam and slab unit, 7 batten plate. Detailed Description of the Invention

[0028] The present invention will be described in detail below with reference to the drawings:

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by "front", "rear", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0030] As Figure 1-4 shown: The steel-concrete composite beam and slab integrated unit for a high-performance grain depot, which includes

[0031] The precast concrete slab 2, which is a reinforced concrete slab with a bidirectional steel mesh 2-2 built-in;

[0032] The profiled steel beam 1, which is a profiled steel respectively arranged above the front side and the rear side of the top surface of the precast concrete slab 2 and extends in the left-right direction;

[0033] Several connecting steel bars 3, which are annular and are distributed at intervals along the extending direction of the profiled steel beam 1 on the bottom surface of the profiled steel beam 1;

[0034] Among them, the connecting steel bar 3 is connected between the profiled steel beam 1 and the precast concrete slab 2, so that the connecting steel bar 3, the profiled steel beam 1 and the precast concrete slab 2 are connected to form a composite beam and slab integrated unit 6 with a trough-shaped cross-section;

[0035] Both ends of the profiled steel beam 1 are provided with extending parts.

[0036] Here, the long axis direction of the composite beam and slab integrated unit 6 is consistent with the spanning direction; the connecting steel bar 3 is connected between the profiled steel beam 1 and the precast concrete slab 2, which will make the bottom surface of the profiled steel beam 1 higher than the top surface of the precast concrete slab 2.

[0037] The upper edge of the connecting steel bar 3 is fixedly connected to the bottom surface of the profiled steel beam 1, and the lower side of the connecting steel bar 3 is anchored into the precast concrete slab 2

[0038] The top surface of the extending part is flush with the top surface of the profiled steel beam 1, and the bottom surface of the extending part is higher than the bottom surface of the profiled steel beam 1.

[0039] The extending part includes an end plate 1-1 and an outrigger profiled steel 1-2. The end plate 1-1 is connected to the end of the profiled steel beam 1, and the outrigger profiled steel 1-2 is connected to the end plate 1-1;

[0040] The top surface of the outrigger profiled steel 1-2 is flush with the top surface of the profiled steel beam 1, and the bottom surface of the outrigger profiled steel is higher than the bottom surface of the profiled steel beam 1.

[0041] The top surface of the precast concrete slab 2 is a rough surface.

[0042] A plurality of truss steel bars 2-1 are arranged in an array on the top surface of the precast concrete slab 2, and the truss steel bars 2-1 are perpendicular to the profiled steel beam 1. The truss steel bars 2-1 here can be arranged in an array according to the force requirements.

[0043] As Figure 5-8 shown: A method for installing a steel-concrete composite beam-slab integrated unit for a high-performance grain depot, characterized in that it comprises the following steps:

[0044] S1: Steel corbels 5 are arranged on the lower side surface of the main roof beam or truss 4;

[0045] S2: Hoist the composite beam-slab integrated unit 6; and place the extension part on the top surface of the steel corbel 5 and weld it for fixation;

[0046] S3: Hoist the remaining composite beam-slab integrated units 6 in the manner of S2, and weld the batten plates 7 between adjacent composite beam-slab integrated units 6 for fixation;

[0047] S4: Pour the surface layer concrete on the precast concrete slab.

[0048] In S3, the batten plate 7 is welded to the profiled steel beam 1 of two adjacent composite beam-slab integrated units 6.

[0049] Finally, it should be noted that: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Steel-concrete composite beam-slab integrated unit for high-performance grain storage, which includes The prefabricated concrete slab (2) is a reinforced concrete slab with a built-in bidirectional steel mesh (2-2); The steel beam (1) is respectively arranged on the upper front side and the upper rear side of the top of the concrete precast panel (2), and extends in the left and right directions; A plurality of connecting steel bars (3) are ring-shaped and are distributed at intervals on the bottom surface of the steel beam (1) along the extension direction of the steel beam (1); in, The connecting steel bars (3) are connected between the steel beam (1) and the precast concrete slab (2), so that the bottom surface of the steel beam (1) is higher than the top surface of the precast concrete slab (2), and the connecting steel bars (3), the steel beam (1) and the precast concrete slab (2) are connected to form a composite beam-slab integrated unit (6) with a groove-shaped cross section; Both ends of the steel beam (1) are provided with extension parts.

2. The steel-concrete composite beam-slab integrated unit for high-performance grain storage according to claim 1 is characterized in that: The upper edge of the connecting steel bar (3) is fixedly connected to the bottom surface of the steel beam (1), and the lower side of the connecting steel bar (3) is anchored in the precast concrete slab (2).

3. The steel-concrete composite beam-slab integrated unit for high-performance grain storage according to claim 1 is characterized in that: The top surface of the extension portion is flush with the top surface of the steel beam (1), and the bottom surface of the extension portion is higher than the bottom surface of the steel beam (1).

4. The steel-concrete composite beam-slab integrated unit for high-performance grain storage according to claim 3 is characterized in that: The extension portion comprises an end plate (1-1) and an outwardly extending steel section (1-2), wherein the end plate (1-1) is connected to the end of the steel beam (1), and the outwardly extending steel section (1-2) is connected to the end plate (1-1); The top surface of the extended steel section (1-2) is flush with the top surface of the steel beam (1), and the bottom surface of the extended steel section is higher than the bottom surface of the steel beam (1).

5. The steel-concrete composite beam-slab integrated unit for high-performance grain storage according to claim 1 is characterized in that: The top surface of the precast concrete panel (2) is a rough surface.

6. The steel-concrete composite beam-slab integrated unit for high-performance grain storage according to claim 1, characterized in that: A plurality of truss steel bars (2-1) are arranged in an array on the top surface of the precast concrete panel (2), and the truss steel bars (2-1) are perpendicular to the steel beam (1).

7. A method for installing a steel-concrete composite beam-slab integrated unit for a high-performance grain depot according to any one of claims 1 to 6, characterized in that: It includes the following steps: S1: A steel bracket (5) is provided on the lower side of the roof main beam or truss (4); S2: hoisting the composite beam-slab integrated unit (6); and placing the extension portion on the top surface of the steel corbel (5) and welding it to fix; S3: installing and hoisting the remaining composite beam-slab integrated units (6) in the same manner as in S2, and welding tie plates (7) between adjacent composite beam-slab integrated units (6) for fixation; S4: Pour surface concrete on the precast concrete slab.

8. The installation method according to claim 7, characterized in that: The gusset plate (7) is welded to the steel beams (1) of two adjacent composite beam-plate integrated units (6).

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