Prefabricated assembly type independent foundation under concrete column

Abstract

The utility model relates to the technical field of prefabricated buildings, in particular to a prefabricated independent foundation under a concrete column, which comprises a first foundation platform and a second foundation platform, a plurality of embedded anchor bars and embedded column steel bars are arranged inside the bottom end of the first foundation platform, and bent ends are arranged at the bottom ends of the embedded anchor bars and the embedded column steel bars. An embedded sleeve arranged outside the embedded anchor bar and the embedded column steel bar in a sleeving mode is arranged in the inner wall of the top end of the first foundation table, and a reserved hole corresponding to the embedded sleeve is formed in the second foundation table. According to the prefabricated assembly type concrete independent column foundation, the first foundation platform and the second foundation platform can be quickly connected and assembled, and the stability and precision of the prefabricated assembly type concrete independent column foundation in the assembly process are ensured; and deviation in the assembling process is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to prefabricated building technical field, concretely is a prefabricated concrete column lower independent foundation. BACKGROUND

[0002] With the continuous progress of modern building technology, prefabricated concrete structure is widely used in engineering practice because of its advantages such as fast construction speed, high efficiency and controllable cost. As an important part of this structure system, the stability and bearing capacity of prefabricated concrete foundation directly relate to the safety and durability of the whole building.

[0003] In the scheme of prefabricated concrete independent foundation, there are still some technical challenges. For example, how to ensure the stability and precision of prefabricated concrete independent column base during assembly to avoid deviation during assembly. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a prefabricated concrete column lower independent foundation to solve the problems in the above background technology.

[0005] The technical scheme of the utility model is: a prefabricated concrete column lower independent foundation, comprising a foundation first table and a foundation second table, a plurality of embedded anchor bars and embedded column steel bars are arranged inside the bottom end of the foundation first table, the bottom end of the embedded anchor bars and the embedded column steel bars is provided with a bent end, a embedded sleeve is arranged inside the top end inner wall of the foundation first table and sleeved outside the embedded anchor bars and the embedded column steel bars, a reserved hole corresponding to the embedded sleeve is formed in the foundation second table, a screw rod and a column steel rod corresponding to the embedded anchor bars and the embedded column steel bars respectively are inserted into the reserved hole, the bottom end of the screw rod and the column steel rod is connected with the top end of the embedded sleeve, and grouting material is poured into the reserved hole.

[0006] The above components achieve the following effects: the embedded anchor bars, the embedded column steel bars, the embedded sleeve, the screw rod and the column steel rod can quickly connect and assemble the foundation first table and the foundation second table, ensure the stability and precision of the prefabricated concrete independent column base during assembly, avoid deviation during assembly, reliably connect each part of the prefabricated foundation, prevent slip on the assembly joint surface under column load, and ensure the impact cutting resistance and bending resistance of the prefabricated independent column base.

[0007] Preferably, the top of the foundation first table is provided with a foundation first table reserved groove, the surface of the foundation first table reserved groove needs to be roughened, the top of the foundation second table is provided with a foundation second table reserved groove, the surface of the foundation second table reserved groove needs to be roughened, and the bottom of the foundation second table needs to be roughened.

[0008] The effect achieved by the above components is that the first base reserved groove and the second base reserved groove after surface roughening treatment are used to bear horizontal shear force.

[0009] Preferably, fine stone concrete is poured in the first base reserved groove, and the second base is embedded above the fine stone concrete.

[0010] The effect achieved by the above components is that the fine stone concrete ensures reliable engagement between the first base and the second base.

[0011] Preferably, the screw rod is screwed into a suitable nut at the top end after the fine stone concrete and the grouting material are solidified, and the top end of the screw rod is provided with a screw rod top protective layer.

[0012] The effect achieved by the above components is that the screw rod top is screwed and pre-tensioned by the nut, which ensures that the first base and the second base do not separate under the action of column bending moment, and the protective layer at the top of the screw rod can prevent the end of the screw rod from rusting under the action of the foundation soil.

[0013] Preferably, a reserved hole corresponding to the second base is also provided on the inner wall of the bottom of the first base reserved groove at the top of the first base, a pre-buried sleeve is arranged at the bottom end of the reserved hole on the first base, an anchoring end plate is fixed at the bottom end of the pre-buried sleeve, and the screw rod and the column steel bar extend to the corresponding pre-buried sleeve at the bottom end.

[0014] The effect achieved by the above components is that by changing the embedding depth of the pre-buried sleeve and cooperating with the anchoring end plate, the screw rod and the column steel bar at the bottom end can be directly connected, the pre-buried anchor bar and the pre-buried column steel bar are cancelled, and the assembly convenience is further improved while the cost is reduced.

[0015] Compared with the prior art, the prefabricated assembly type concrete column independent foundation provided by the present application has the following improvements and advantages:

[0016] Firstly, the pre-buried anchor bar, the pre-buried column steel bar, the pre-buried sleeve, the screw rod and the column steel bar can quickly assemble the first base and the second base, a groove is arranged at the top of the first base, fine stone concrete is poured in the groove between the first base and the second base, and the screw rod is arranged to tension between the first base and the second base, so that the horizontal shear force between the first base and the second base can be effectively transmitted, the separation phenomenon under the action of column bottom bending moment is avoided, and the overall performance of the prefabricated foundation is improved.

[0017] Secondly, the utility model discloses a column steel bar can directly cooperate with the embedded sleeve and be connected to the foundation first platform, and the column steel bar can be directly used for cast-in-place reinforced concrete column and can be connected with the prefabricated concrete column steel bar through the connecting sleeve, so the construction is very convenient. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be explained further in combination with the drawings and examples:

[0019] Figure 1 It is the cross section schematic view of the utility model embodiment 1.

[0020] Figure 2 It is the cross section schematic view of the utility model embodiment 2.

[0021] Figure 3 It is the plane view schematic view of the utility model.

[0022] Mark explanation:

[0023] 1, foundation first platform, 2, embedded anchor, 3, embedded sleeve, 4, embedded column steel bar, 5, foundation first platform reserved recess, 6, fine stone concrete, 7, foundation second platform, 8, reserved hole, 9, grouting material, 10, foundation second platform reserved recess, 11, screw rod, 12, screw rod top protective layer, 13, column steel bar, 14, anchoring end plate. DETAILED DESCRIPTION

[0024] The utility model will be explained further in combination with the drawings and examples:

[0025] The utility model discloses a kind of independent foundation below prefabricated assembly type concrete column, and the technical scheme of the utility model is:

[0026] In the embodiment 1 of the utility model, Figure 1 And Figure 3As shown, a prefabricated concrete column independent foundation, including foundation first table 1 and foundation second table 7, the bottom end of the foundation first table 1 is internally provided with a plurality of embedded anchor bars 2 and embedded column steel bars 4, the bottom end of the embedded anchor bars 2 and the embedded column steel bars 4 is provided with a bent end, the inner wall of the top end of the foundation first table 1 is provided with a pre-embedded sleeve 3 sleeved outside the embedded anchor bars 2 and the embedded column steel bars 4, the foundation second table 7 is provided with a reserved hole 8 corresponding to the pre-embedded sleeve 3, the reserved hole 8 can adopt a pre-embedded grouting sleeve, or can adopt a concrete direct hole leaving mode, the reserved hole 8 is inserted with a screw rod 11 and a column steel bar 13 corresponding to the embedded anchor bars 2 and the embedded column steel bars 4 respectively, the column steel bar 13 can be used for cast-in-place reinforced concrete column steel bars, or can be connected with prefabricated reinforced concrete column steel bars in a mechanical sleeve, welding or grouting sleeve mode, the bottom end of the screw rod 11 and the column steel bar 13 is connected with the top end of the pre-embedded sleeve 3, the reserved hole 8 is poured with grouting material 9, the grouting material 9 has a micro-expansion property, ensuring the anchoring property of the column steel bar 13 in the prefabricated foundation, the foundation first table 1 and the foundation second table 7 can be quickly connected and assembled through the embedded anchor bars 2, the embedded column steel bars 4, the pre-embedded sleeve 3, the screw rod 11 and the column steel bar 13, the top of the foundation first table 1 is provided with a foundation first table reserved groove 5, the surface of the foundation first table reserved groove 5 needs to be roughened, the top of the foundation second table 7 is provided with a foundation second table reserved groove 10, the surface of the foundation second table reserved groove 10 needs to be roughened, the bottom of the foundation second table 7 needs to be roughened, the foundation first table reserved groove 5 and the foundation second table reserved groove 10 after the surface roughening are used to bear horizontal shear force, the foundation first table reserved groove 5 is poured with fine stone concrete 6, the foundation second table 7 is embedded above the fine stone concrete 6, the reliable engagement of the foundation first table 1 and the foundation second table 7 is ensured through the fine stone concrete 6, the top end of the screw rod 11 is screwed into an adaptive screw cap after the fine stone concrete 6 and the grouting material 9 are solidified, the top end of the screw rod 11 is provided with a screw rod top protective layer 12, the top of the screw rod 11 is screwed with a screw cap and a pre-tension is applied, ensuring that the foundation first table 1 and the foundation second table 7 do not separate under the action of column bending moment, the protective layer 12 at the top of the screw rod 11 can avoid corrosion of the end of the screw rod 11 under the action of the foundation soil, the protective layer at the top of the screw rod 11 adopts (including but not limited to) anticorrosion materials such as plain concrete, epoxy resin, asphalt mastic coating and the like

[0027] In the embodiment 2 of the utility model, the bottom inner wall of the reserved groove 5 on the top of the first base 1 is also provided with the reserved hole 8 corresponding to the second base 7, the embedded sleeve 3 is arranged at the bottom end of the reserved hole 8 on the first base 1, the embedded sleeve 3 is fixed with the anchoring end plate 14 at the bottom end, the screw rod 11 and the column steel bar 13 extend into the corresponding embedded sleeve 3, the embedded depth of the embedded sleeve 3 is changed, and the anchoring end plate 14 can be directly connected with the bottom end of the screw rod 11 and the column steel bar 13, the embedded anchor bar 2 and the embedded column steel bar 4 are cancelled, the assembly convenience is further improved, and the cost is reduced.

[0028] The working principle of the prefabricated assembly type concrete column lower independent foundation is as follows: Figure 1 The first base 1 and the second base 7 are prefabricated in a factory, the embedded sleeve 3 is arranged in the first base 1, and the embedded sleeve 3 is connected with the embedded anchor bar 2 and the embedded column steel bar 4, or referring to Figure 2 The embedded sleeve 3 and the anchoring end plate 14 are arranged in the first base 1, and the reserved hole 8 for penetrating the screw rod 11 and the column steel bar 13, the embedded sleeve 3 and the anchoring end plate 14 are welded, the reserved groove 5 of the first base is arranged during prefabrication, the surface of the reserved groove 5 of the first base is roughened, the second base 7 is arranged on the top of the second base 7, and the surface of the groove and the bottom of the second base 7 need to be roughened; after the first base 1 is hoisted and positioned, the screw rod 11 and the column steel bar 13 are tightened with the embedded sleeve 3, or referring to Figure 2 After the screw rod 11 and the column steel bar 13 are tightened with the embedded sleeve 3, the reserved hole 8 is filled with the grouting material 9 with micro-expansion characteristics; the surface of the reserved groove 5 of the first base and the bottom surface of the second base 7 are wetted with water, the fine stone concrete 6 is laid, the second base 7 is hoisted, the screw rod 11 and the column steel bar 13 are aligned with the reserved hole 8, and then the second base 7 is placed in the reserved groove 5 of the first base; the reserved hole 8 of the second base 7 is filled with the micro-expansion grouting material 9, the screw rod 11 is installed and tightened after the fine stone concrete 6 and the grouting material 9 are solidified, a pre-pressure is applied between the first base 1 and the second base 7, the first base 1 and the second base 7 are prevented from being separated under the action of the column bottom bending moment, and finally the screw rod top protection layer 12 is laid to prevent the screw rod 11 from being corroded under the corrosion of the foundation soil.

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A precast fabricated independent foundation under concrete column, comprising a foundation first platform (1) and a foundation second platform (7), characterized in that, The bottom end of the foundation first platform (1) is internally provided with a plurality of pre-buried anchor bars (2) and pre-buried column steel bars (4), the bottom end of the pre-buried anchor bars (2) and the pre-buried column steel bars (4) is provided with a bent end, the inner wall of the top end of the foundation first platform (1) is internally provided with a pre-buried sleeve (3) sleeved outside the pre-buried anchor bars (2) and the pre-buried column steel bars (4), the foundation second platform (7) is provided with a reserved hole (8) corresponding to the pre-buried sleeve (3), the reserved hole (8) is inserted with a screw rod (11) and a column steel bar (13) corresponding to the pre-buried anchor bars (2) and the pre-buried column steel bars (4) respectively, the bottom end of the screw rod (11) and the column steel bar (13) is connected with the top end of the pre-buried sleeve (3), and the reserved hole (8) is internally poured with grouting material (9).

2. The precast concrete column independent foundation according to claim 1, wherein: The top of the foundation first platform (1) is provided with a foundation first platform reserved groove (5), and the surface of the foundation first platform reserved groove (5) needs to be roughened.

3. The precast concrete column independent foundation according to claim 2, wherein: The top of the foundation second platform (7) is provided with a foundation second platform reserved groove (10), and the surface of the foundation second platform reserved groove (10) needs to be roughened, and the bottom of the foundation second platform (7) needs to be roughened.

4. The precast concrete column independent foundation according to claim 3, wherein: The foundation first platform reserved groove (5) is internally poured with fine stone concrete (6), and the foundation second platform (7) is embedded above the fine stone concrete (6).

5. The precast concrete column independent foundation according to claim 4, wherein: The top end of the screw rod (11) is screwed into a matched screw cap after the fine stone concrete (6) and the grouting material (9) are solidified, and the top end of the screw rod (11) is provided with a screw rod top protective layer (12).

6. The precast concrete column independent foundation according to claim 2, wherein: The bottom inner wall of the foundation first platform reserved groove (5) of the top of the foundation first platform (1) is also provided with a reserved hole (8) corresponding to the foundation second platform (7), the pre-buried sleeve (3) is arranged at the bottom end of the reserved hole (8) of the foundation first platform (1), the bottom end of the pre-buried sleeve (3) is fixedly provided with an anchoring end plate (14), and the bottom end of the screw rod (11) and the column steel bar (13) extends into the corresponding pre-buried sleeve (3).

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