Prefabricated pile core over-pouring prevention construction method
By adding elastic steel mesh and flexible metal mesh to the bottom of the steel cage, the problem of fine concrete falling during prefabricated pile construction was solved, achieving effective utilization of materials and reducing costs.
Patent Information
- Application Number
- CN202411654444.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-01-21
AI Technical Summary
In prefabricated pile construction, the fine stone concrete falls a lot due to the gap between the pallet and the prefabricated pile, resulting in waste of materials and increased costs.
An elastic steel mesh and a flexible metal mesh are added to the bottom of the steel cage, and the elastic steel mesh is used to rigidly support the upper flexible metal mesh to form a supporting structure to block the fine stone concrete.
It effectively seals the gap between the supporting plate and the prefabricated pile aperture, prevents fine stone concrete from falling, saves materials, reduces costs, and meets construction requirements.
Smart Images
Figure CN119332680A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of building construction, in particular to a prefabricated pile core over-pouring prevention construction method. Background Art
[0002] Pile foundation is the most effective way to solve the bearing capacity and settlement deformation of the foundation. Precast piles are widely used because of their good quality of prefabrication and maintenance in the factory, no need for on-site maintenance and no process breaks, which can speed up the construction progress. The cross-sectional characteristics of precast hollow piles are better than solid piles. They are the most widely used pile type in the market. After the hollow piles are pressed to the specified elevation, they are used with different pile core reinforcement cages according to the pile force direction (compression and tension) with the cap and raft.
[0003] The steel cage and tray are welded on site and placed in the center hole of the precast pile. High-grade fine stone concrete is poured into the hole to connect the precast pile and the pile core steel cage. The pile core steel cage is connected to the cap to make the pile play its expected role.
[0004] Precast piles are processed and manufactured by centrifugal technology, so it is inevitable that the concrete products will have dimensional deviations. The pile core support plate is generally 20mm-30mm smaller than the precast pile hole diameter, which is convenient for the installation of the pile core reinforcement cage. Due to the gap between the support plate and the precast pile hole diameter, a large amount of fine stone concrete falls onto the support plate, resulting in material waste and increased costs.
[0005] Faced with this problem, most units allow concrete consumption to be transferred to subcontractors, resulting in settlement disputes; some teams also fill the pile holes with soil, causing hole wall pollution that is not conducive to the connection of new and old concrete; some teams use discarded nylon bags for filling, and when the pile core steel cage is lowered, it often slides out from the tray around, forming concrete slag. In order to effectively save costs and eliminate waste, a prefabricated pile core over-pouring prevention construction method is proposed to solve the problem of concrete leakage. Summary of the invention
[0006] The present invention aims to solve the above-mentioned problem, thereby providing a prefabricated pile core over-pouring prevention construction method.
[0007] The present invention solves the above-mentioned problem by adopting the following technical solution: A prefabricated pile core overfilling prevention construction method is carried out according to the following steps: Step 1: Steel cage welding: conventionally make steel cage, make reinforcing hoops according to the inner diameter of steel cage, and weld the reinforcing hoops and main bars of steel cage evenly; Step 2: Add an elastic steel mesh at the bottom of the steel cage, and the main reinforcement ends of the steel cage extend downward through the mesh holes of the elastic steel mesh. The size of the elastic steel mesh is slightly larger than the hole diameter of the precast pile; Step 3: Weld the tray; weld the tray at the bottom of the steel cage; Step 4: Binding and welding of spiral stirrups; the straight section of the spiral stirrups at the beginning presses the elastic steel mesh to initially fix the elastic steel mesh; Step 5: Fix the flexible metal mesh on the elastic steel mesh; Step 6: Place the steel cage into the center hole of the precast pile and pour concrete.
[0008] Furthermore, in step 2, the elastic steel mesh is a steel wire mesh with a pore size of 1 cm2 and a diameter of 1 mm.
[0009] Furthermore, in step five, the flexible metal mesh can be made of 12-mesh, 13-mesh, 14-mesh, 15-mesh and 18-mesh steel wire mesh used for intercepting post-casting strips at the construction site, or a quick-closing mesh can be used.
[0010] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features: The method described in the present invention can seal the gap between the support plate and the precast pile aperture by adding an elastic steel mesh and a flexible metal mesh at the bottom of the steel cage, so that the fine stone concrete cannot fall from the gap to under the support plate to cause material waste. The rigidity of the elastic steel mesh is used to support the upper flexible metal mesh to form a supporting structure to block the fine stone concrete. After pouring, the elastic steel mesh and the flexible metal mesh are poured into the concrete, and the metal objects do not constitute slag inclusions, which meets the construction requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the main structure of an embodiment of the present invention; Figure 2 For the embodiment of the present invention Figure 1 Schematic diagram of the cross-sectional structure of AA; Marked in the figure are: main reinforcement 1, reinforcing hoop 2, precast pile 3, flexible metal mesh 4, elastic steel mesh 5, support plate 6, spiral hoop 7, and gap between tray and aperture 8. DETAILED DESCRIPTION
[0012] The present invention will be further described below in conjunction with embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.
[0013] See also Figure 1-Figure 2 A prefabricated pile core overfilling prevention construction method is carried out according to the following steps: Step 1: Steel cage welding: conventionally make steel cage, make reinforcing hoops according to the inner diameter of steel cage, and weld the reinforcing hoops and main bars of steel cage evenly; Step 2: Add an elastic steel mesh at the bottom of the steel cage, and the main reinforcement ends of the steel cage extend downward through the mesh holes of the elastic steel mesh. The size of the elastic steel mesh is slightly larger than the hole diameter of the precast pile; Step 3: Weld the tray; weld the tray at the bottom of the steel cage; Step 4: Binding and welding of spiral stirrups; the straight section of the spiral stirrups at the beginning presses the elastic steel mesh to initially fix the elastic steel mesh; Step 5: Fix the flexible metal mesh on the elastic steel mesh; Step 6: Place the steel cage into the center hole of the precast pile and pour concrete.
[0014] Furthermore, in step 2, the elastic steel mesh is a steel wire mesh with a pore size of 1 cm2 and a diameter of 1 mm.
[0015] Furthermore, in step five, the flexible metal mesh can be made of 12-mesh, 13-mesh, 14-mesh, 15-mesh and 18-mesh steel wire mesh used for intercepting post-casting strips at the construction site, or a quick-closing mesh can be used.
[0016] The method described in the present invention can seal the gap between the support plate and the precast pile aperture by adding an elastic steel mesh and a flexible metal mesh at the bottom of the steel cage, so that the fine stone concrete cannot fall from the gap to under the support plate to cause material waste. The rigidity of the elastic steel mesh is used to support the upper flexible metal mesh to form a supporting structure to block the fine stone concrete. After pouring, the elastic steel mesh and the flexible metal mesh are poured into the concrete, and the metal objects do not constitute slag inclusions, which meets the construction requirements.
[0017] The above description is only a preferred feasible embodiment of the present invention, and does not limit the scope of rights of the present invention. All equivalent changes made using the contents of the present specification and its drawings are included in the scope of rights of the present invention.
Claims
1. A method for preventing over-pouring of a prefabricated pile core, characterized in that: Follow these steps: Step 1: Steel cage welding: conventionally make steel cage, make reinforcing hoops according to the inner diameter of steel cage, and weld the reinforcing hoops and main bars of steel cage evenly; Step 2: Add an elastic steel mesh at the bottom of the steel cage, and the main reinforcement ends of the steel cage extend downward through the mesh holes of the elastic steel mesh. The size of the elastic steel mesh is slightly larger than the hole diameter of the precast pile; Step 3: Weld the tray; weld the tray at the bottom of the steel cage; Step 4: Binding and welding of spiral stirrups; the straight section of the spiral stirrups at the beginning presses the elastic steel mesh to initially fix the elastic steel mesh; Step 5: Fix the flexible metal mesh on the elastic steel mesh; Step 6: Place the steel cage into the center hole of the precast pile and pour concrete.
2. A precast pile core overfilling prevention construction method according to claim 1, characterized in that: In step 2, the elastic steel mesh is a steel wire mesh with a hole diameter of 1 cm2 and a diameter of 1 mm.
3. A precast pile core overfilling prevention construction method according to claim 2, characterized in that: In step five, the flexible metal mesh can be made of 12-mesh, 13-mesh, 14-mesh, 15-mesh and 18-mesh steel wire mesh used to intercept the post-casting strip at the construction site, or a quick-closing mesh can be used.