Steel sleeve closed pile end suitable for pore-forming vibro-replacement gravel pile of pore-forming cast-in-place concrete pile
By designing a closed structure including outer pipe and inner pipe, the sealing ring structure is used to prevent mud from entering, the problem of mud entering during steel pipe injection is solved, and the construction efficiency and service life of the outer pipe are improved.
Patent Information
- Application Number
- CN202422358347.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-09-26
AI Technical Summary
During construction, mud is prone to enter the steel pipes of hole-formed concrete cast-in piles and hole-formed vibrating gravel piles during the process of drilling, resulting in cumbersome construction technology and long cycles, and the pile tip cannot be taken out after being drilled, which increases the construction cost.
A closed structure including an outer pipe and an inner pipe is designed. The outer pipe is equipped with an inner pipe, the lower end of the inner pipe is provided with a pile end, the inner wall of the lower part of the outer pipe is provided with a sealing ring, and the outer wall of the inner pipe is provided with a sealing ring corresponding to the sealing ring. The inlet of mud and sand are prevented by the sealing ring structure, and the inner and outer pipes can be turned over and used in multiple times.
It reduces construction processes and improves construction efficiency. The design of pile ends and steel tips ensures smooth sinking of the outer pipe, reduces wear of the outer pipe, improves service life, and makes the inner pipe easy to remove and fast.
Smart Images
Figure CN222796409U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field related to building construction, and in particular to a steel casing for sealing pile ends of bored concrete cast-in-place piles and bored vibratory crushed stone piles. Background Art
[0002] In the construction pile making operation, bored concrete cast-in-place piles or bored vibratory crushed stone piles are made by driving steel pipes into the pile sites and directly pouring concrete or crushed stone before pulling out the pipes. During the driving process of the steel pipes, mud will enter the steel pipes, which requires the mud in the steel pipes to be removed before continuing to pour concrete or crushed stone. This construction process is cumbersome and has a long construction period. For example, if the pile tip is sleeved at the lower end of the steel pipe, although no mud will enter the steel pipe during the driving process, the pile tip cannot be removed after being driven in, and the construction cost is high. Utility Model Content
[0003] The utility model aims to overcome the above-mentioned inadequate problems and provides a steel casing suitable for closing the pile end of a bored concrete cast-in-place pile and a bored vibrating crushed stone pile.
[0004] The technical solution adopted by the utility model to achieve the above-mentioned purpose is:
[0005] The invention is suitable for sealing the pile end of a bored concrete cast-in-place pile and a bored vibratory crushed stone pile with a steel casing, comprising an outer tube, an inner tube being sleeved inside the outer tube, a supporting surface being arranged at the upper end of the inner tube, a lower end surface of the supporting surface being supported on the upper end surface of the outer tube, a pile end being arranged at the lower end of the inner tube, an end portion of the pile end being located outside the outer tube, a sealing ring 1 being arranged on the inner wall of the lower part of the outer tube, a sealing ring 2 corresponding to the sealing ring 1 being arranged on the outer wall of the inner tube, a lower end surface of the sealing ring 2 being supported on the upper end surface of the sealing ring 1, and an outer diameter of the sealing ring 2 being larger than an inner diameter of the sealing ring 1.
[0006] Furthermore, a steel tip is provided on the lower end surface of the outer tube.
[0007] Furthermore, a guide ring is provided on the outer wall of the upper portion of the inner tube.
[0008] Furthermore, the outer diameter of the support surface is equal to the outer diameter of the outer tube.
[0009] Furthermore, the pile end is conical.
[0010] Furthermore, the interior of the pile end is a hollow structure and is communicated with the inner cavity of the inner tube.
[0011] The utility model is characterized in that: there is a cavity inside the tube and a sealing structure is provided to prevent mud and sand from entering, thereby reducing construction procedures; the pile end and the steel tip are arranged to ensure smooth sinking of the outer tube and reduce wear of the outer tube, thereby increasing service life; the inner tube can be taken out conveniently and quickly; the inner and outer tubes as a whole can be used repeatedly, and the construction efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model.
[0013] Figure 2 It is a schematic diagram of the lower end surface of the outer tube of the utility model.
[0014] Among them: 1, outer tube 2, inner tube 3, support surface 4, pile end 5, sealing ring 1 6, sealing ring 2 7, guide ring 8, steel tip. DETAILED DESCRIPTION
[0015] like Figure 1-2 As shown, it is suitable for the steel casing closed pile end of bored concrete cast-in-place pile bored vibratory crushed stone pile, comprising an outer tube 1, an inner tube 2 is sleeved inside the outer tube 1, a support surface 3 is integrally provided on the upper end of the inner tube 2, the lower end surface of the support surface 3 is supported on the upper end surface of the outer tube 1, and the outer diameter of the support surface 3 is equal to the outer diameter of the outer tube 1, a pile hammer or a vibrating hammer acts on the support surface 3 to drive the inner tube 2 and the outer tube 1 to sink together, a pile end 4 is integrally provided on the lower end of the inner tube 2, the end of the pile end 4 is located outside the outer tube 1, the pile end 4 is conical, the interior of the pile end 4 is a cavity structure and is connected with the inner cavity of the inner tube 2, the pile end 4 is arranged to facilitate the sinking of the outer tube 1, a sealing structure is arranged between the outer tube 1 and the inner tube 2 to prevent mud and sand from entering the inner cavity of the outer tube 1 during the sinking process, the sealing structure comprises a sealing ring 1 5 and a sealing ring 2 6, the inner wall of the lower part of the outer tube 1 is integrally provided with a sealing ring 1 5, and the outer wall of the inner tube 2 A sealing ring 2 6 corresponding to the sealing ring 1 5 is integrally arranged, and the lower end face of the sealing ring 2 6 is supported on the upper end face of the sealing ring 1 5, and the outer diameter of the sealing ring 2 6 is larger than the inner diameter of the sealing ring 1 5. The sealing ring 1 5 and the sealing ring 2 6 cooperate to seal the mud and sand entering the inner cavity of the outer tube 1, so as to ensure that the inner cavity does not enter the impurities, and can play a force role when sinking. When sinking, as the inner tube 2 applies pressure to the outer tube 1, they sink together. A guide ring 7 is arranged on the outer wall of the upper part of the inner tube 2. A certain small gap is left between the outer periphery of the guide ring 7 and the inner wall of the outer tube 1 to facilitate the removal of the inner tube 2. The guide ring 7 can prevent the outer tube 1 and the inner tube 2 from shifting during the sinking process. The lower end face of the outer tube 1 is evenly distributed with steel tips 8 in the circumferential direction. Preferably, the number of the steel tips 8 is 6-8. During the sinking process, if the outer tube 1 encounters an obstacle, the steel tip 8 can shear the obstacle, reduce the wear of the outer tube 1, and facilitate the smooth sinking of the outer tube 1.
[0016] When the utility model is used, a pile hammer or a vibrating hammer can be used to sink the inner cavities of the inner and outer pipes. After sinking into place, the inner pipe 2 is taken out as a whole, and then filling construction is carried out, and the cast-in-place pile is filled with concrete or the crushed stone pile is filled with crushed stone aggregate.
[0017] The outer tube 1, the inner tube 2 and the pile end 4 of the utility model are all hollow, and a sealing structure is arranged between the outer tube 1 and the inner tube 2, which can prevent mud and sand from entering and reduce construction procedures. The pile end 4 and the steel tip 8 are arranged to ensure that the outer tube 1 sinks smoothly, reduce the wear of the outer tube 1, and increase the service life. The inner tube 2 can be taken out quickly and conveniently, and the outer tube 1 and the inner tube 2 as a whole can be used repeatedly, and the construction efficiency is high.
[0018] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present invention according to the technical scheme and inventive concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. Applicable to the steel casing of bored concrete piles, bored vibrating stone piles and pile ends, characterized by: It comprises an outer tube, wherein the inner tube is sleeved inside the outer tube, the upper end of the inner tube is provided with a supporting surface, the lower end surface of the supporting surface is supported on the upper end surface of the outer tube, the lower end of the inner tube is provided with a pile end, the end of the pile end is located outside the outer tube, the inner wall of the lower part of the outer tube is provided with a sealing ring 1, the outer wall of the inner tube is provided with a sealing ring 2 corresponding to the sealing ring 1, the lower end surface of the sealing ring 2 is supported on the upper end surface of the sealing ring 1, and the outer diameter of the sealing ring 2 is greater than the inner diameter of the sealing ring 1.
2. The steel casing for closing the pile end of a bored concrete cast-in-place pile and a bored vibrating crushed stone pile as claimed in claim 1, characterized in that: The lower end surface of the outer tube is provided with a steel tip.
3. The steel casing for closing the pile end of a bored concrete cast-in-place pile and a bored vibrating crushed stone pile as claimed in claim 1, characterized in that: The outer wall of the upper part of the inner tube is provided with a guide ring.
4. The steel casing for closing the pile end of a bored concrete cast-in-place pile and a bored vibrating crushed stone pile as claimed in claim 1, characterized in that: The outer diameter of the supporting surface is equal to the outer diameter of the outer tube.
5. The steel casing for closing the pile end of a bored concrete cast-in-place pile and a bored vibrating crushed stone pile as claimed in claim 1, characterized in that: The pile end is conical.
6. The steel casing for closing the pile end of a bored concrete cast-in-place pile and a bored vibrating crushed stone pile as claimed in claim 1, characterized in that: The interior of the pile end is a hollow structure and is communicated with the inner cavity of the inner tube.