A forming device for constructing a concrete shaped pile

Abstract

The utility model relates to the technical field of pile foundation, specifically discloses a forming device for constructing concrete special-shaped pile, which comprises a cross-shaped pile, the bottom of the cross-shaped pile is conical, the inside of the cross-shaped pile is hollow, the top of the cross-shaped pile is an opening, and the opening is in communication with the hollow inside of the cross-shaped pile; the side wall of the cross-shaped pile is provided with a grouting hole, and the grouting hole is in communication with the hollow inside of the cross-shaped pile. The problems that the existing pile foundation needs to be installed after the liquefied land is treated, thereby leading to the low installation efficiency of the pile foundation are solved.

Description

Technical Field

[0001] This utility model relates to the field of pile foundation technology, specifically to a forming device for constructing irregular concrete piles. Background Technology

[0002] With the acceleration of urbanization, my country's infrastructure construction is constantly developing. Especially in earthquake-prone areas, the increase in large-scale construction projects has placed higher demands on the stability and safety of the foundation.

[0003] Construction projects often cover vast areas, necessitating construction in liquefiable soil layers such as saturated sand. These foundations are prone to liquefaction under dynamic loads like earthquakes, causing the soil to lose its bearing capacity and exhibit liquid-like properties, leading to uneven settlement and tilting of buildings. Therefore, implementing effective reinforcement measures to enhance the liquefaction resistance of foundations has become a critical task in current engineering projects. Methods such as pile foundations are widely used in reinforcing liquefiable soil foundations to ensure the safety and stability of buildings.

[0004] Soil liquefaction is a term in earthquake engineering, referring to the transformation of solid soil into a liquid or viscous fluid under the influence of external forces. Soil liquefaction mainly occurs in shallow, saturated, loose fine sand, silty sand, or clay soils with poor drainage at the bottom.

[0005] The existing pile foundations have limited applicability in liquefiable soil foundations. In actual treatment, methods such as replacement (excavating the liquefiable soil layer and replacing it with non-liquefiable materials to directly eliminate the risk) and dynamic compaction (increasing the soil density and reducing porosity by impacting with a heavy hammer to reduce the possibility of liquefaction) are required, resulting in low efficiency in the pile foundation installation process. Utility Model Content

[0006] The purpose of this utility model is to provide a forming device for constructing irregular concrete piles, so as to solve the problem that existing pile foundations require treatment of liquefied soil layers before installation, which leads to low pile foundation installation efficiency.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A forming device for constructing irregular concrete piles includes a cross-shaped pile with a conical bottom and a hollow interior. The top of the cross-shaped pile is open and communicates with the hollow interior. Grouting holes are provided on the sidewalls of the cross-shaped pile and communicate with the hollow interior. The device also includes multiple grouting pipes and a grouting pump. The grouting pump is connected to a distribution plate via a transmission pipe. The distribution plate is connected to the multiple grouting pipes, and the grouting pipes are connected to the grouting holes of the cross-shaped pile.

[0009] Furthermore, there are four grouting pipes in total, which are divided into two groups. The upper ends of the two groups of grouting pipes are respectively connected to the two ends of the distribution plate, so that the concrete in the transmission pipeline is injected from the directions of the two groups of grouting pipes.

[0010] Furthermore, the cross-shaped pile has four grouting holes, which are respectively located on the four side walls of the cross-shaped pile.

[0011] Furthermore, the grouting pipe is fastened to the cross-shaped pile by a magnetic U-shaped clip.

[0012] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0013] This utility model adopts a cross-shaped pile and utilizes a grouting pump, transmission pipeline, distribution plate and grouting pipe to pour cement grout from the grouting hole to the outside of the cross-shaped pile. The cement grout combines with the liquefied soil layer around the cross-shaped pile. During the combination process, the outer wall area of ​​the cross-shaped pile is larger and the contact area with the cement grout is larger, which can effectively improve the soil reinforcement effect. The cross-shaped pile, cement grout and liquefied soil layer combine to form a complete pile foundation, completing the rapid installation of the pile foundation. Attached Figure Description

[0014] Figure 1 This is a diagram of a cross-shaped pile structure.

[0015] Figure 2 This is a structural diagram of the transmission pipeline and grouting pump.

[0016] Figure 3 This is an overall drawing of the present utility model.

[0017] Figure 4 This is a top view of the present invention.

[0018] Figure 5 This is a schematic diagram of the installation environment for this utility model.

[0019] The labels in the diagram are as follows: 1-cross-shaped pile, 2-grouting hole, 3-grouting pump, 4-transmission pipeline, 5-distribution plate, 6-grouting pipe. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, so as to provide a better understanding of the concept of the present utility model, the technical problem solved, the technical features constituting the technical solution and the technical effects brought about.

[0021] like Figures 1-4As shown, a forming device for constructing irregularly shaped concrete piles includes a cross-shaped pile 1. The bottom of the cross-shaped pile 1 is conical, the interior of the cross-shaped pile 1 is hollow, and the top of the cross-shaped pile 1 is open, communicating with the interior hollow part of the cross-shaped pile 1. Grouting holes 2 are provided on the sidewalls of the cross-shaped pile 1, and the grouting holes 2 are communicating with the interior hollow part of the cross-shaped pile 1. It also includes multiple grouting pipes 6 and a grouting pump 3. The grouting pump 3 is connected to a distribution plate 5 via a transmission pipe 4. The distribution plate 5 is connected to the multiple grouting pipes 6, and the grouting pipes 6 are connected to the grouting holes 2 of the cross-shaped pile 1.

[0022] A cross-shaped pile (1) refers to a pile whose cross-section is cross-shaped.

[0023] This invention is applied to construction environments in liquefiable soil layers. Existing methods for installing pile foundations in liquefiable soil layers require prior treatment using methods such as replacement (excavating the liquefiable soil layer and replacing it with non-liquefiable materials to directly eliminate risk) and dynamic compaction (increasing soil density and reducing porosity through heavy hammer impact to reduce the possibility of liquefaction) before pile foundation installation, resulting in low efficiency. This invention pours cement grout from the grouting hole onto the outside of the cross-shaped pile, allowing the cement grout to combine with the liquefied soil surrounding the cross-shaped pile. During this combination process, the outer wall area of ​​the cross-shaped pile 1 is larger, resulting in a larger contact area with the cement grout, effectively improving soil reinforcement. The cross-shaped pile, cement grout, and liquefied soil layer combine to form a complete pile foundation, enabling rapid installation. The cement grout flows within the liquefied soil layer before solidification and forms a mixture with the liquefied soil layer after solidification, enhancing the soil's bearing capacity. This completes the installation of the pile foundation and reinforces the liquefied soil foundation. The grouting pipe 6 and grouting pump 3 are used to inject grout from the grouting hole 2 of the cross-shaped pile 1 to form the concrete irregular pile. The grouting pump 3 is located outside the cross-shaped pile 1, away from the cross-shaped pile 1 and liquefiable soil. In the transmission pipeline 4, the power of the grouting pump 3 is used to transmit cement grout to the distribution plate 5. The distribution plate 5 is connected to multiple grouting pipes 6, and each grouting pipe 6 is connected to a separate grouting hole 2, so that cement grout is poured from multiple side walls of the cross-shaped pile 1 to the outside of the cross-shaped pile 1.

[0024] Note: The cement grout mentioned in this utility model is a nanomaterial composite cement grout. The nanomaterials improve the grout's permeability and bonding strength, significantly improving the shear strength of liquefiable soil. The irregular concrete pile referred to in this application is an irregular pile formed by combining a cross-shaped pile with internally and externally cast concrete.

[0025] Furthermore, there are four grouting pipes 6 in total, which are divided into two groups. The upper ends of the two groups of grouting pipes 6 are respectively connected to the two ends of the liquid distribution plate 5, so that the concrete in the transmission pipeline 4 is injected from the directions of the two groups of grouting pipes 6 respectively.

[0026] Furthermore, the cross-shaped pile 1 has four grouting holes 2, which are respectively located on the four side walls of the cross-shaped pile 1. The four grouting holes 2 ensure that all the grouting pipes 6 can be utilized.

[0027] Furthermore, the grouting pipe 6 is secured to the cross-shaped pile 1 by a magnetic U-shaped buckle, which also facilitates easy access and position adjustment.

[0028] like Figure 5 As shown, the best application of this utility model is as follows: liquefied soil is usually not completely covered by the soil layer. The grouting hole 2 of this utility model passes through the liquefied soil layer to reach the non-liquefied soil part. Cement grout is poured from the non-liquefied soil part to the outside of the cross-shaped pile 1. The cement grout spreads and combines with the non-liquefied soil and the liquefied soil layer around the cross-shaped pile 1. After the combination, because the cross-shaped pile 1 has a large outer wall area, it achieves a relatively stable combination with the cement grout. Moreover, the bottom of the cross-shaped pile 1 is inserted into a relatively stable non-liquefied soil part, achieving a stable support effect.

[0029] The grouting sequence of this utility model is as follows: First, grouting pump 3 and grouting pipe 6 are used to grout the outside of the cross-shaped pile, so that the outer wall of the cross-shaped pile 1 and the liquefied soil layer are firmly bonded by cement grout. After the pouring is completed, the lower section of grouting pipe 6 is not recycled and is left in the cross-shaped pile 1 to seal the grouting hole 2. The upper section of grouting pipe 6 is disassembled (pre-set as two connected grouting pipes for easy retrieval of the upper section of the grouting pipe later). After the upper section of grouting pipe 6 and grouting pump 3 are recycled, concrete filling material is poured into the inside of the cross-shaped pile 1. The concrete filling material is C30 micro-expansion concrete, which forms a composite load-bearing structure that is tightly bonded to the inner wall of the cross-shaped pile 1 after filling.

[0030] The terms "connection" and "fixing" appearing in this utility model description can refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meaning of the above terms in this utility model should be understood according to the specific circumstances.

[0031] In the description of this utility model, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., are used only to indicate the orientation or positional relationship for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A forming device for constructing irregularly shaped concrete piles, characterized in that: It includes a cross-shaped pile (1), the bottom of which is conical, the interior of which is hollow, and the top of which is open, with the opening communicating with the interior of the cross-shaped pile (1). The side wall of the cross-shaped pile (1) is provided with grouting holes (2), which are connected to the hollow interior of the cross-shaped pile (1); It also includes multiple grouting pipes (6) and grouting pumps (3). The grouting pumps (3) are connected to the distribution plate (5) through the transmission pipe (4). The distribution plate (5) is connected to multiple grouting pipes (6) respectively. The grouting pipes (6) are connected to the grouting holes (2) of the cross-shaped pile (1) respectively.

2. The forming device for constructing irregularly shaped concrete piles according to claim 1, characterized in that: There are four grouting pipes (6), which are divided into two groups. The upper ends of the two groups of grouting pipes (6) are connected to the two ends of the liquid distribution plate (5), so that the concrete in the transmission pipeline (4) is grouted from the directions of the two groups of grouting pipes (6).

3. A forming device for constructing irregularly shaped concrete piles according to claim 2, characterized in that: The cross-shaped pile (1) has four grouting holes (2), which are respectively set on the four side walls of the cross-shaped pile (1).

4. A forming device for constructing irregularly shaped concrete piles according to claim 1, characterized in that: The grouting pipe (6) is fastened to the cross-shaped pile (1) by a magnetic U-shaped buckle.

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