Pile-to-column reinforcing construction device

Abstract

The utility model belongs to the technical field of existing building expansion construction, and discloses a pile-to-column reinforcing construction device, which aims to solve the technical problems existing in the prior art that a pile foundation is adopted to form an underground space through downward digging of the pile foundation, and comprises a raft plate arranged on the upper portion of an original pile, and drilling anchoring holes are longitudinally formed in the periphery of the raft plate. Longitudinal load-bearing steel bars are anchored in the drilling anchoring holes and located on the outer side of the original pile, the tops of the longitudinal load-bearing steel bars penetrate through and are fixed to the original bearing platform, columns are arranged on the top of the original bearing platform, formworks are arranged on the peripheries of the longitudinal load-bearing steel bars, pouring pipes are connected to the formworks, and the pouring pipes penetrate through the original floor slab and then are connected with pouring funnels. And a concrete layer is poured between the template and the original pile. By means of the characteristics of a building structure and a high-position pressurization method, pouring of concrete of the enlarged section is improved, the concrete is compacted through the pressure of the concrete, and the phenomenon that pouring of concrete at the bottom of an original bearing platform and a newly-added section is not compact is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of existing building expansion construction, in particular to a pile-to-column reinforcement construction device. Background Art

[0002] With the acceleration of urbanization and the resulting shortage of land resources, the development of underground space has become an important way to alleviate urban land pressure and expand urban space. Underground space can not only be used for transportation, parking, commerce, warehousing, and other functions, but it can also effectively improve the urban ecological environment and enhance the city's comprehensive carrying capacity. Therefore, the development of underground space is of great significance to modern urban construction.

[0003] When expanding underground space, ensuring the safety of the surrounding environment and the building itself is crucial. Some buildings use pile foundations to create underground space, but this presents the following challenges.

[0004] 1. After the excavation of the new basement, the pile foundation and the pedestal will be exposed.

[0005] 2. Piles and columns are completely different load-bearing components. Excavating and exposing the original foundation piles will seriously affect the safety of the building.

[0006] 3. Affected by the original foundation, the existing construction technology cannot change the cross-section of the piles at the bottom of the foundation by changing them into columns.

[0007] 4. The existing technology cannot well ensure the newly added cross-section of the pile-to-column conversion, and the steel connection between the original pile foundation and the pedestal does not meet the technical requirements for a dense connection at the bottom of the pedestal.

[0008] In view of the above problems, the present invention proposes a pile-to-column reinforcement construction device. Utility Model Content

[0009] The purpose of the utility model is to solve the technical problems existing in the prior art of using pile foundations to form underground spaces by digging pile foundations, and to provide a pile-to-column reinforcement construction device.

[0010] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0011] A pile-to-column reinforcement construction device includes a raft plate arranged on the upper part of the original pile, a plurality of drilled anchor holes are longitudinally arranged around the raft plate, longitudinal stress-bearing steel bars are anchored in the drilled anchor holes, the longitudinal stress-bearing steel bars are located on the outside of the original pile, the top of the longitudinal stress-bearing steel bars is passed through and fixed on the original pedestal, the top of the original pedestal is a column, the periphery of the longitudinal stress-bearing steel bars is equipped with a template, the upper part of the template is connected to a casting pipe, the casting pipe is connected to a casting funnel after passing through the original floor slab, and a concrete layer is cast between the template and the original pile.

[0012] Furthermore, stirrups are provided transversely around the periphery of the longitudinal stress-bearing steel bars.

[0013] Furthermore, tie bars are provided between the longitudinal stress-bearing steel bars and the original piles.

[0014] Furthermore, the top of the longitudinal stress-bearing steel bar passes through the original pedestal and is fixed to the anchor plate arranged on the top of the original pedestal.

[0015] Furthermore, a pouring connection port is provided on the upper portion of the template, and the pouring connection port is connected to the pouring pipe.

[0016] Furthermore, the original floor slab is provided with a floor slab pouring hole for installing a pouring pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This new construction method utilizes the inherent characteristics of the building structure and the high-level pressurization method to construct the cross-section of the pile-to-column structure at the bottom of the pedestal. This improves the pouring of the concrete with the increased cross-section, compacts the concrete through its own pressure, and avoids the phenomenon of loose pouring of the concrete with the added cross-section and the original pedestal bottom.

[0019] The utility model adds stress-bearing steel bars and concrete around the original foundation piles, thereby solving the problem of the original foundation piles being exposed during excavation and the problem of the exposure seriously affecting the safety of the building.

[0020] The utility model has a simple structure, saves time and labor, is adapted to local conditions, meets the requirements of underground space expansion and reinforcement, increases reinforcement speed, effectively saves reinforcement costs, and improves reinforcement quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the longitudinal structure of the utility model.

[0022] Figure 2 It is a schematic diagram of the horizontal structure of the utility model.

[0023] Figure 3 This is a schematic diagram of the template connection structure of the utility model.

[0024] The meanings of the accompanying numbers are as follows: 1. Original piles; 2. Longitudinal stress-bearing steel bars; 3. Stirrups; 4. Tie bars; 5. Concrete layer; 6. Original pedestal; 7. Anchor plate; 8. Column; 9. Raft slab; 10. Drilled anchor holes; 11. Raft slab steel bars; 12. Floor slab casting holes; 13. Casting funnel; 14. Casting pipe; 15. Casting connection port; 16. Formwork; 17. Floor slab. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1-3 As shown, a pile-to-column reinforcement construction device includes a raft 9 arranged on the upper part of the original pile 1, a raft steel bar 11 is transversely provided on the raft 9, a plurality of drilled anchor holes 10 are longitudinally provided around the raft 9, longitudinal stress-bearing steel bars 2 are anchored in the drilled anchor holes 10, the longitudinal stress-bearing steel bars 2 are located on the outside of the original pile 1, stirrups 3 are transversely provided around the periphery of the longitudinal stress-bearing steel bars 2, tension bars 4 are provided between the longitudinal stress-bearing steel bars 2 and the original pile 1, and the top of the longitudinal stress-bearing steel bars 2 passes through the original pedestal 6 and is fixedly connected to the anchor plate 7 fixed on the top of the original pedestal 6.

[0027] The top of the existing foundation 6 is a column 8. A formwork 16 is installed around the longitudinal reinforcement 2. A pouring connection 15 is provided on the top of the formwork 16, which is connected to a pouring pipe 14. The pouring pipe 14 passes through a floor pouring hole 12 provided in the existing floor slab 17 and is connected to a pouring funnel 13. A concrete layer 5 is poured between the formwork 16 and the existing pile 1.

[0028] The specific operations are as follows:

[0029] 1. Basement excavation: basement excavation should be carried out according to the design requirements. First, the basement should be positioned and laid out as needed, and excavation should be carried out at the laid-out position. When the excavation reaches the design elevation, the lower foundation soil should be compacted.

[0030] 2. Treatment of exposed pile interface: chisel out the surface soil layer of the exposed original pile 1, adjust the diameter of the original pile 1, and clean the surface dust with a high-pressure water gun.

[0031] 3. Pile-to-column reinforcement construction: Tie reinforcement is drilled and planted. Longitudinal stress reinforcement 2 is drilled and anchored inside the existing cap 6 and anchor holes 10. Longitudinal stress reinforcement 2 is welded and anchored to the top of the existing cap 6 using anchor plates 7. Stirrups 3 are then tied, raft slab reinforcement 11 is tied, and concrete is poured for the raft slab 9.

[0032] 4. Installation of the pile-to-column formwork: First, lay out the formwork at the bottom of the raft 9 and the original cap 6, and process the formwork 16 according to the laid-out dimensions. After the formwork 16 is processed, install the formwork 16 according to the layout position of the formwork 16. The joint gaps of the formwork 16 should be tight to avoid leakage. After the formwork 16 is installed, install the pouring connection port 15. The vertical height of the pouring connection port 15 should be higher than the vertical center line of the original cap 6. According to the position of the pouring connection port 15, cast a vertical line to determine the position of the floor slab pouring hole 12, statically remove the pouring hole, and install the pouring pipe 14 and the pouring funnel 13.

[0033] 5. Pile-to-column concrete pouring: Pour concrete into the pouring hopper 13. Gently tap the side of the formwork 16 during pouring to ensure the concrete is densely poured. After pouring, promptly check the compactness of the concrete at the bottom of the original cap 6, perform curing, and remove the formwork 16.

Claims

1. A pile-to-column reinforcement construction device, comprising a raft plate (9) arranged on the upper part of an original pile (1), characterized in that: The raft slab (9) is longitudinally provided with a plurality of drilled anchor holes (10) around it, and longitudinal stress-bearing steel bars (2) are anchored in the drilled anchor holes (10). The longitudinal stress-bearing steel bars (2) are located outside the original pile (1), and the top of the longitudinal stress-bearing steel bars (2) is passed through and fixed on the original pedestal (6). The top of the original pedestal (6) is a column (8), and the outer periphery of the longitudinal stress-bearing steel bars (2) is provided with a template (16). The upper part of the template (16) is connected to a pouring pipe (14), and the pouring pipe (14) passes through the original floor slab (17) and is connected to a pouring funnel (13). A concrete layer (5) is poured between the template (16) and the original pile (1).

2. The pile-to-column reinforcement construction device according to claim 1, characterized in that: Stirrups (3) are transversely arranged around the periphery of the longitudinal stress-bearing steel bars (2).

3. The pile-to-column reinforcement construction device according to claim 2, characterized in that: A tensioning bar (4) is provided between the longitudinal stress-bearing steel bar (2) and the original pile (1).

4. The pile-to-column reinforcement construction device according to claim 3, characterized in that: The top of the longitudinal stress-bearing steel bar (2) passes through the original cap (6) and is fixed to the anchor plate (7) arranged on the top of the original cap (6).

5. The pile-to-column reinforcement construction device according to claim 1, characterized in that: A pouring connection port (15) is provided on the upper portion of the template (16), and the pouring connection port (15) is connected to the pouring pipe (14).

6. The pile-to-column reinforcement construction device according to claim 1, characterized in that: The original floor slab (17) is provided with a floor slab pouring hole (12) for installing a pouring pipe (14).

7. The pile-to-column reinforcement construction device according to claim 1, characterized in that: Raft slab steel bars (11) are transversely arranged on the raft slab (9).

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