CN216379675U - Core-pulling guide tube for foundation pile core drilling detection - Google Patents
Core-pulling guide tube for foundation pile core drilling detection Download PDFInfo
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- CN216379675U CN216379675U CN202122486894.8U CN202122486894U CN216379675U CN 216379675 U CN216379675 U CN 216379675U CN 202122486894 U CN202122486894 U CN 202122486894U CN 216379675 U CN216379675 U CN 216379675U
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Abstract
The utility model discloses a loose core guiding pipe for foundation pile core drilling detection, which belongs to the technical field of engineering construction, and has the technical scheme that the loose core guiding pipe comprises a loose core guiding pipe body, a loose core guiding pipe bottom end closed end, pile end sediment and pile body concrete, wherein the loose core guiding pipe bottom end closed end is positioned at the lower end of the loose core guiding pipe body, the pile end sediment is positioned below the pile body concrete, a loose core guiding pipe body is pre-installed in a pile hole before the concrete is poured, the pipe bottom is sealed by the concrete in advance, after the pile end grouting treatment is finished, an engineering drilling machine is used, a drill bit is inserted into the loose core guiding pipe to drill through the concrete at the end of the loose core guiding pipe and the pile end sediment until a pile end bearing layer is reached, a drilled core sample is taken out, the grouting body condition in the core sample is checked, whether the pile end sediment is reliably treated or not is judged, and the purpose of detecting the pile end sediment treatment effect is achieved, the full play of the end bearing force of the foundation pile is ensured, and the method has important significance for engineering safety.
Description
Technical Field
The utility model relates to the technical field of engineering construction, in particular to a core-pulling guide pipe for detecting the drilling core of a foundation pile.
Background
After the foundation pile is formed into a hole, soil particles on the wall of the pile hole can be brought out of the hole bottom in the processes of descending a reinforcement cage and pouring concrete of a pile body, and after the reinforcement cage is descended, the bottom cannot be cleaned again, so that pile end sediments are formed. Pile end sediment can cause a foundation pile to lose the bearing capacity of the pile end, so that engineering quality accidents are caused, and the pile end sediment is treated by adopting a pile end post-grouting method at present, but the grouting treatment effect cannot be detected.
SUMMERY OF THE UTILITY MODEL
The utility model provides a core-pulling guide tube for detecting the core drilling of a foundation pile to solve the problems.
The utility model is realized in such a way that the loose core guiding tube used for detecting the drilling core of the foundation pile comprises a loose core guiding tube body, a closed end at the bottom end of the loose core guiding tube, pile end sediment and pile body concrete, wherein the closed end at the bottom end of the loose core guiding tube is positioned at the lower end of the loose core guiding tube body, the pile end sediment is positioned below the pile body concrete, and the loose core guiding tube body and the closed end at the bottom end of the loose core guiding tube are both positioned in the pile body concrete.
In order to facilitate drilling and sampling, the core-pulling guide tube for detecting the core drilling of the foundation pile is preferably made of a steel tube with the wall thickness not less than 3mm, and the diameter of the core-pulling guide tube body is larger than that of a drill bit of an engineering drilling machine.
In order to ensure that the bottom end of the core-pulling guide pipe body is sealed fully, does not have air holes and does not leak water, the core-pulling guide pipe for detecting the drilling core of the foundation pile is preferably used, the closed end of the bottom end of the core-pulling guide pipe is made of concrete, and the thickness of the concrete is not less than 0.5 m.
In order to prevent the loose core guide pipe body from directly falling to the bottom of the pile, the loose core guide pipe for detecting the drilling core of the foundation pile is preferably used, the upper end of the loose core guide pipe body is higher than the upper end of the pile body concrete, and the distance from the lower end of the loose core guide pipe body to the bottom end of the pile body concrete is not less than 1 m.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the loose core guide tube for detecting the drilling core of the foundation pile, a loose core guide tube body is pre-installed in a pile hole before concrete is poured, the bottom of the tube is sealed by concrete in advance, after the grouting treatment of the pile end is finished, an engineering drilling machine is used, a drill bit is inserted into the loose core guide tube, the concrete at the end part of the loose core guide tube and the pile end are drilled through to mix sediments until reaching a pile end holding layer, a drilled core sample is taken out, the grouting body condition in the core sample is checked, and therefore whether the sediment at the pile end is reliably treated is judged, the purpose of detecting the sediment treatment effect of the pile end is achieved, the full exertion of the bearing force of the pile end of the foundation pile is guaranteed, and the loose core guide tube has important significance for engineering safety;
2. this kind of foundation pile bores core and detects used guiding tube of loosing core, and when the pile length surpassed certain length, the straightness that hangs down of stake always can have the deviation, when the rig bored the core sample, the rig drill bit itself also is difficult to absolute perpendicular, the straightness that hangs down can the deviation, when the draw ratio of foundation pile surpassed 30, the drill bit straightness that hangs down is difficult to keep unanimous with the pile straightness that hangs down, often the drill bit drills out from the stake side after boring certain degree of depth, can't bore the stake end, through pre-buried guiding tube body of loosing core, can reduce foundation pile and bore core length, directly stretch near the stake end with the drill bit through pre-buried guiding tube of loosing core and carry out the core, solve the difficult problem of long pile core drilling.
Drawings
Fig. 1 is an overall structure diagram of a loose core guide tube for detecting a core of a foundation pile according to the present invention.
In the figure, 1, a loose core guide tube body; 2. the bottom end of the core-pulling guide pipe is closed; 3. settling the slag at the pile end; 4. pile body concrete.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1, a loose core guiding tube for foundation pile core drilling detection includes a loose core guiding tube body 1, a loose core guiding tube bottom end closed end 2, a pile end sediment 3 and pile body concrete 4, where the loose core guiding tube bottom end closed end 2 is located at the lower end of the loose core guiding tube body 1, the pile end sediment 3 is located below the pile body concrete 4, and both the loose core guiding tube body 1 and the loose core guiding tube bottom end closed end 2 are located in the pile body concrete 4.
In this embodiment: before concrete is poured, a loose core guide pipe body 1 is pre-installed in a pile hole, the bottom end of the loose core guide pipe body 1 is sealed by concrete in advance, when the loose core guide pipe is hoisted, the sealed end 2 of the bottom end of the loose core guide pipe cannot fall to the bottom of a pile, a certain distance (not less than 1m) is required to be arranged away from the bottom of the pile, after pile end grouting treatment is completed, an engineering drilling machine is used, a drill bit is inserted into the loose core guide pipe body 1, the end of the loose core guide pipe body 1 is drilled through, the sealed end 2 of the bottom end of the loose core guide pipe, the concrete and pile end sediment 3 are taken out until a pile end holding layer, and a drilled core sample is checked, so that whether pile end sediment is reliably treated is judged, the purpose of detecting the pile end sediment treatment effect is achieved, the bearing force of a base pile end is fully exerted, and important significance is provided for engineering safety.
As a technical optimization scheme of the utility model, the core-pulling guide pipe body 1 is made of a steel pipe with the wall thickness not less than 3mm, and the diameter of the core-pulling guide pipe body 1 is larger than the diameter of a drill bit of an engineering drilling machine.
In this embodiment: the core-pulling guide pipe body 1 is made of a steel pipe with the wall thickness not less than 3mm, so that the core-pulling guide pipe body 1 is smooth and straight and not easy to deform, the aperture is larger than the diameter of a drill bit of an engineering drilling machine, and drilling and sampling are further facilitated.
As a technical optimization scheme of the utility model, the closed end 2 at the bottom end of the core-pulling guide pipe is made of concrete, and the thickness of the concrete is not less than 0.5 m.
In this embodiment: the bottom end of the core-pulling guide tube body 1 is sealed and full, and has no air hole and no water leakage.
As a technical optimization scheme of the utility model, the upper end of the loose core guide pipe body 1 is higher than the upper end of the pile body concrete 4, and the distance from the lower end of the loose core guide pipe body 1 to the bottom end of the pile body concrete 4 is not less than 1 m.
In this embodiment: the loose core guiding pipe body 1 can not directly fall to the bottom of the pile, and has a certain distance with the bottom of the pile, so that the fixing strength of the loose core guiding pipe body 1 is improved.
The working principle and the using process of the utility model are as follows: firstly, a loose core guide pipe body 1 is made of a steel pipe with the wall thickness not less than 3mm, the loose core guide pipe body 1 is firstly poured on the ground to carry out bottom sealing at the closed end 2 at the bottom end of the loose core guide pipe with the wall thickness not less than 0.5m, before pouring the pile body concrete 4, the loose core guide pipe body 1 is firstly installed at the position which is not less than 1m away from the pile bottom, the upper top is higher than the ground, after the pile body concrete 4 reaches certain strength, core drilling and sampling are started, a drill bit is inserted into the loose core guide pipe body 1 and directly extends into the closed end 2 at the bottom end of the loose core guide pipe body 1 to start drilling, the closed end 2 at the bottom end of the loose core guide pipe in the loose core guide pipe body 1 is drilled, the drill bit continues to drill through the pile end sediment 3, the drilled core sample is finally taken out, the quality of the pile end sediment sample is detected on the ground, the detection of the treatment quality of the pile end sediment is completed, (→ the hole cleaning and hoisting steel reinforcement cage (the grouting pipe is hoisted together with the steel reinforcement cage) for hole cleaning → hoisting the loose core → concreting → grouting pile end → drilling core in the core-pulling guide tube → checking core sample).
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a foundation pile bores guide tube of loosing core that core detected used, is including the guide tube body of loosing core (1), the guide tube bottom blind end of loosing core (2), pile end sediment (3) and pile body concrete (4), its characterized in that: the loose core guide tube bottom end closed end (2) is located at the lower end of the loose core guide tube body (1), the pile end sediment (3) is located below the pile body concrete (4), and the loose core guide tube body (1) and the loose core guide tube bottom end closed end (2) are both located in the pile body concrete (4).
2. The core-pulling guide tube for detecting the core drilling of the foundation pile according to claim 1, wherein: the core-pulling guide pipe body (1) is made of a steel pipe with the wall thickness not less than 3mm, and the diameter of the core-pulling guide pipe body (1) is larger than the diameter of a drill bit of an engineering drilling machine.
3. The core-pulling guide tube for detecting the core drilling of the foundation pile according to claim 1, wherein: the closed end (2) at the bottom end of the core-pulling guide pipe is made of concrete, and the thickness of the concrete is not less than 0.5 m.
4. The core-pulling guide tube for detecting the core drilling of the foundation pile according to claim 1, wherein: the upper end of the core-pulling guide pipe body (1) is higher than the upper end of the pile body concrete (4), and the distance between the lower end of the core-pulling guide pipe body (1) and the bottom end of the pile body concrete (4) is not less than 1 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122486894.8U CN216379675U (en) | 2021-10-15 | 2021-10-15 | Core-pulling guide tube for foundation pile core drilling detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122486894.8U CN216379675U (en) | 2021-10-15 | 2021-10-15 | Core-pulling guide tube for foundation pile core drilling detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216379675U true CN216379675U (en) | 2022-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122486894.8U Active CN216379675U (en) | 2021-10-15 | 2021-10-15 | Core-pulling guide tube for foundation pile core drilling detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216379675U (en) |
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2021
- 2021-10-15 CN CN202122486894.8U patent/CN216379675U/en active Active
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