Concrete pouring construction structure of dry operation pore-forming cast-in-place pile
By filling an appropriate amount of mud into a mud section before pouring the concrete of the dry-operated pore-forming pile, the problems of air holes and over-filling waste during dry-operated pores are solved, the bearing capacity of the pile bottom is improved, and the site is kept clean.
Patent Information
- Application Number
- CN202420564124.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-03-21
AI Technical Summary
There are often air holes in the upper section of the concrete of the dry-operated pile, which leads to excessive waste of overfilling and super thick sediment at the bottom of the pile, affecting the bearing capacity.
Before pouring concrete, pour an appropriate amount of mud to form a mud section to reduce the shrinkage and collapse of holes during dry operation. The mud section plays a compacting role in the process of pouring concrete, avoid bubbles and suspend slag, and improve the bearing capacity of the pile bottom.
It effectively reduces the air holes and overfilling waste during dry operation, improves the bearing capacity of the pile bottom, and keeps the site clean.
Smart Images
Figure CN222685491U_ABST
Abstract
Description
Technical Field
[0001] The utility model patent relates to the technical field of foundation engineering, specifically, to a dry-operation bored cast-in-place pile concrete pouring construction structure. Background Art
[0002] In the current bored pile construction of construction projects, mud wall protection and dry operation drilling methods are commonly used for bored pile construction. Among them, the mud wall drilling method is widely used due to its advantages such as less impact from the geological environment and better drilling quality. However, due to its unique construction method and limited site size, the construction site is relatively dirty and the pile efficiency is lower than that of the drilling method. At the same time, the mud skin effect will reduce the friction resistance on the side of the bored pile. The dry operation drilling construction method can overcome this problem, but compared with the mud wall drilling method, it is greatly affected by the geological environment and is generally used in fill and clay strata above the groundwater level.
[0003] In the prior art, the upper part of the concrete of the cast-in-place pile in dry drilling construction often has air holes, and the over-casting produced to ensure the quality of the pile often causes great waste. It is also easy to have excessively thick sediment at the bottom of the pile, which is not conducive to exerting the bearing capacity of the pile bottom. Utility Model Content
[0004] The purpose of the utility model is to provide a dry-operation bored pile concrete pouring construction structure, aiming to solve the problem in the prior art that the upper section of the dry-operation bored pile concrete often has air holes, and the over-pouring produced to ensure the quality of the pile often causes great waste. It is also easy to have excessively thick sediment at the bottom of the pile, which is not conducive to exerting the bearing capacity of the pile bottom.
[0005] The utility model is realized in that a dry-operation bored pile concrete pouring construction structure comprises a pile hole, wherein a pile opening is formed at the top of the pile hole; a pouring conduit for pouring concrete is placed in the pile hole, a discharge port is provided at the bottom of the pouring conduit, and a concrete section formed by pouring concrete is provided at the lower part of the pile hole; a mud section formed by pouring mud before pouring concrete is provided above the concrete section, the mud section is suspended above the concrete section, and a grouting pipe for pumping mud out of the pile hole is provided in the mud section.
[0006] Optionally, the discharge port is arranged in the concrete section.
[0007] Optionally, the bottom of the grouting pipe has a suction port, the top of the grouting pipe extends out of the outside of the pile opening, and the suction port is placed in the mud section.
[0008] Optionally, a suction pump is provided in the slurry suction pipe, and the suction pump draws the mud into the mud barrel through the suction port.
[0009] Optionally, the top of the mud barrel has a top opening, one end of the slurry suction pipe has the suction port, and the other end of the slurry suction pipe has a discharge port, and the slurry is discharged into the mud barrel through the discharge port and the top opening.
[0010] Optionally, the discharge port is aligned with the top opening in vertical alignment.
[0011] Optionally, a filter mesh for filtering sediment in the pile hole is arranged on the top opening, and the filter mesh completely covers the top opening.
[0012] Optionally, the upper portion of the mud box has an upper section, the top of the upper section is formed with the top opening, the outer periphery of the upper section has a surrounding outer peripheral wall, and along the direction from top to bottom, the outer peripheral wall is arranged to extend radially outward and tilt.
[0013] Optionally, the filter mesh is installed on a fixed frame, the filter mesh is installed in the middle of the fixed frame, the outer periphery of the fixed frame has a downward extending section, the downward extending section is arranged around the circumference of the fixed frame, and the bottom of the downward extending section abuts against the outer peripheral wall from top to bottom.
[0014] Optionally, the top of the perfusion conduit extends to above the pile opening.
[0015] Compared with the prior art, the dry-operation bored pile concrete pouring construction structure provided by the utility model pours an appropriate amount of mud before pouring concrete to form a mud section, thereby reducing the shrinkage and collapse of the hole when the groundwater is not well drained during dry-operation drilling. During the concrete pouring process, under the action of the mud section, the concrete is compacted to ensure the quality of the concrete on the top of the pile and avoid the appearance of bubbles. At the same time, the over-pouring of the pile concrete can be reduced. The mud section poured first can suspend the sediment in the case of excessively thick sediment at the bottom of the pile that may occur during the dry-operation drilling operation, which is beneficial to improving the bearing capacity of the pile bottom. Compared with the large-volume mud pool required for the mud wall drilling method, only a small amount of mud is needed, which can be prepared, stored and transported with a small-volume finished mud barrel, which is beneficial to keeping the site clean. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a construction schematic diagram of a dry-operation bored pile concrete pouring construction structure provided by the utility model;
[0017] Figure 2 It is a cross-sectional schematic diagram of the upper section provided by the utility model. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0019] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.
[0020] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0021] Reference Figure 1-2 As shown, it is a preferred embodiment provided by the utility model.
[0022] The utility model provides a dry-operation bored pile concrete pouring construction structure, comprising a pile hole, wherein a pile opening is formed at the top of the pile hole; a pouring conduit 300 for pouring concrete is placed in the pile hole, the bottom of the pouring conduit 300 is provided with a discharge port, and the lower part of the pile hole is provided with a concrete section 100 formed by pouring concrete; a mud section 200 formed by pouring mud before pouring concrete is provided above the concrete section 100, the mud section 200 is suspended above the concrete section 100, and a grouting pipe 400 for pumping mud out of the pile hole is provided in the mud section 200.
[0023] The above-mentioned dry-operation bored pile concrete pouring construction structure pours an appropriate amount of mud before pouring concrete to form a mud section 200, which reduces the shrinkage and collapse of the hole when the groundwater is not well drained during dry-operation drilling. During the concrete pouring process, under the action of the mud section 200, the concrete is compacted to ensure the quality of the concrete on the top of the pile and avoid the appearance of bubbles. At the same time, the over-pouring of the pile body concrete can be reduced, and the mud section 200 poured first can suspend the sediment in the case of excessive thickness of the pile bottom sediment that may occur in the dry-operation drilling operation, which is beneficial to improving the bearing capacity of the pile bottom. Compared with the large-volume mud pool required for the mud wall drilling method, only a small amount of mud is needed, which can be prepared, stored and transported with a small-volume finished mud barrel, which is beneficial to keeping the site clean.
[0024] Specifically, after the hole is formed, an appropriate amount of mud is poured first. The mud specific gravity should be controlled at 1.14-1.25, the viscosity should be 20s-28s, and the sand content should be ≤4%. Then, the steel cage is lowered, and the pouring conduit 300 is lowered to make the upper part of the discharge port in a mud compacted state for concrete pouring. The concrete section 100 formed by pouring concrete is located below the mud section 200. Then, the concrete is continuously poured to form the construction structure in the present application, that is, when the mud rises to the top of the pile, the grouting pipe 400 is used to suck and recover the mud section 200 suspended above the concrete section 100.
[0025] Specifically, the discharge port is arranged in the concrete section 100. In this way, during the pouring of concrete, a compaction effect is played, the quality of the concrete on the pile top is guaranteed, and bubbles are avoided.
[0026] The bottom of the grouting pipe 400 has a suction port, the top of the grouting pipe 400 extends out of the outside of the pile opening, and the suction port is placed in the mud section 200. In this way, as the concrete is continuously poured, the mud rises to the top of the pile, and the suction port placed in the mud section 200 is used to realize the recovery of the mud.
[0027] A suction pump 410 is provided in the slurry extraction pipe 400, and the suction pump 410 extracts the slurry into the slurry bucket through the suction port. In this way, the recovered slurry is stored in the slurry bucket.
[0028] As a preferred embodiment, the composition of the mud is detected by a detection machine for detecting the composition of the mud. If necessary, the composition of the mud material can be adjusted to recycle the mud.
[0029] Specifically, the top of the mud bucket has a top opening, one end of the slurry pumping pipe 400 has a suction port, and the other end of the slurry pumping pipe 400 has a discharge port, and the slurry is discharged into the mud bucket through the discharge port and the top opening. In this way, a complete return path for the mud is achieved.
[0030] In the present embodiment, the discharge port is aligned with the top opening up and down. In this way, the mud can be dropped into the mud box 500 by its own gravity.
[0031] Specifically, a filter mesh 510 for filtering sediment in the pile hole is arranged on the top opening, and the filter mesh 510 completely covers the top opening. In this way, through the function of the filter mesh 510, large-size impurities can be isolated from the mud box 500, and the mud in the mud box 500 is prevented from containing a large amount of sediment.
[0032] Specifically, the upper part of the mud box 500 has an upper section, the top of the upper section is formed with a top opening, and the outer periphery of the upper section has a surrounding peripheral wall 501, and the peripheral wall 501 is arranged to extend radially outward along the direction from top to bottom. In this way, the filtered sediment can roll down along the peripheral wall 501 to the peripheral area of the mud box 500, which is convenient for recovering the sediment and processing the sediment.
[0033] As a preferred embodiment, the filter mesh 510 is installed on the fixing frame 520, the filter mesh 510 is installed in the middle of the fixing frame 520, the outer periphery of the fixing frame 520 has a lower extension section extending downward, the lower extension section is arranged around the circumference of the fixing frame 520, and the bottom of the lower extension section abuts against the outer peripheral wall 501 from top to bottom. In this way, through the action of the fixing frame 520, the filter mesh 510 is stably fixed and arranged on the top opening.
[0034] Specifically, the top of the perfusion conduit 300 extends to above the pile opening.
[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. Dry operation bored pile concrete pouring construction structure, characterized in that: The invention comprises a pile hole, wherein a pile opening is formed at the top of the pile hole; a pouring conduit for pouring concrete is placed in the pile hole, a discharge port is provided at the bottom of the pouring conduit, and a concrete section formed by pouring concrete is provided at the lower part of the pile hole; a mud section formed by pouring mud before pouring concrete is provided above the concrete section, the mud section is suspended above the concrete section, and a grouting pipe for pumping mud out of the pile hole is provided in the mud section.
2. The dry-operation bored pile concrete pouring construction structure according to claim 1, characterized in that: The discharge port is arranged in the concrete section.
3. The dry-operation bored pile concrete pouring construction structure according to claim 1, characterized in that: The bottom of the grouting pipe is provided with a suction port, the top of the grouting pipe extends out of the outside of the pile opening, and the suction port is placed in the mud section.
4. The dry-operation bored pile concrete pouring construction structure as claimed in claim 3, characterized in that: A suction pump is arranged in the slurry extraction pipe, and the suction pump extracts the slurry into the slurry bucket through the suction port.
5. The dry-operation bored pile concrete pouring construction structure according to claim 4, characterized in that: The top of the mud barrel is provided with a top opening, one end of the slurry pumping pipe is provided with the suction port, and the other end of the slurry pumping pipe is provided with a discharge port, and the mud is discharged into the mud barrel through the discharge port and the top opening.
6. The dry-operation bored pile concrete pouring construction structure according to claim 5, characterized in that: The discharge port is aligned with the top opening up and down.
7. The dry-operation bored pile concrete pouring construction structure according to claim 5, characterized in that: A filter mesh sheet for filtering sediment in the pile hole is arranged on the top opening, and the filter mesh sheet completely covers the top opening.
8. The dry-operation bored pile concrete pouring construction structure according to claim 5, characterized in that: The upper part of the mud barrel has an upper section, the top of the upper section is formed with the top opening, the outer periphery of the upper section has a surrounding outer peripheral wall, and along the direction from top to bottom, the outer peripheral wall is radially extended outwardly and inclined.
9. The dry-operation bored pile concrete pouring construction structure according to claim 7, characterized in that: The filter mesh is installed on a fixing frame with a hollow middle portion, the filter mesh is installed in the middle portion of the fixing frame, the outer periphery of the fixing frame has a downwardly extending lower extension section, the lower extension section is arranged around the circumference of the fixing frame, and the bottom of the lower extension section abuts against the outer peripheral wall from top to bottom.
10. The dry-operation bored pile concrete pouring construction structure according to any one of claims 1 to 9, characterized in that: The top of the perfusion conduit extends to above the pile opening.