Recoverable stand column driving structure for penetrating through hard soil layer

Abstract

The utility model relates to a recoverable stand column driving structure used for penetrating through a hard soil layer, and belongs to the technical field of guardrail stand column driving. Comprising a stand column, a core rod and a pile head, the pile head comprises a circle of inclined pieces, the core rod is inserted into the stand column, the lower end of the core rod is hinged to the circle of inclined pieces, the lower ends of the circle of inclined pieces make contact with each other, and the upper ends of the circle of inclined pieces are connected with an opening in the lower end of the stand column in a clamped mode; the problem that an existing guardrail stand column is not prone to being hit into a hard soil layer is solved.

Description

Technical Field

[0001] This utility model belongs to the field of guardrail post driving technology, specifically relating to a recyclable post driving structure for penetrating hard soil layers. Background Technology

[0002] In the construction of highway traffic safety facilities, guardrails, as a crucial protective component, directly impact the safety of road users through their stability and durability. In recent years, with advancements in materials science and continuous development in engineering technology, highway guardrail steel posts have increasingly adopted high-strength, lightweight designs. This design aims to improve the load-bearing capacity of the posts while reducing weight for easier transportation and installation. However, high-strength, lightweight steel posts, due to their thinner walls, are prone to deformation when driven into the soil, posing a challenge to construction. This is especially true when encountering obstacles such as hard soil layers or water-stabilized layers outside designated areas due to improper construction, significantly increasing the difficulty of driving the posts. Even with relatively thin soil or water-stabilized layers, posts cannot be easily driven in using traditional piling methods.

[0003] To overcome these construction challenges, engineers began experimenting with the drilling method. This method involves pre-drilling holes in the soil before driving the column into them, thus avoiding the deformation and damage that can occur with direct driving. However, when the barrier layer is thin, the drilling method is less economical, and the loss of soil around the column may result in insufficient compaction of the surrounding soil. Utility Model Content

[0004] This invention overcomes the shortcomings of existing technologies by proposing a recyclable post-driving structure for penetrating hard soil layers, thus solving the problem that guardrail posts are not easy to drive into hard soil layers.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0006] A recyclable post driving structure for penetrating hard soil layers includes a post, a core rod, and a pile head. The pile head includes a ring of inclined plates. A core rod is inserted inside the post. The lower end of the core rod is hinged to the ring of inclined plates. The lower ends of the ring of inclined plates are in contact with each other. The upper end of the ring of inclined plates is engaged with the lower opening of the post.

[0007] Furthermore, the column is a cylindrical structure with openings at both the top and bottom.

[0008] Furthermore, the core rod is a straight rod-shaped structure, located at the internal axis of the column, and a striking block is fixedly installed at the upper end of the core rod, located at the upper opening of the column.

[0009] Furthermore, the inclined plate includes a connecting plate, an arc plate, and a snap-fit ​​plate. The connecting plate is an inclined planar plate structure, the lower half of which is an isosceles triangular plate structure, and the upper half of which is a square plate structure. The arc plate and the snap-fit ​​plate are both vertically arranged arc-shaped plate structures. The upper end of the connecting plate is fixedly connected to the lower end of the arc plate, and the lower end of the snap-fit ​​plate is fixedly connected to the inner side of the connecting plate near the upper end. The snap-fit ​​plate is located inside the arc plate.

[0010] Furthermore, the gap between the snap-fit ​​plate and the arc plate forms an upward-opening snap-fit ​​groove, and the snap-fit ​​grooves at the upper end of the beveled plate snap into the lower opening of the column.

[0011] Furthermore, the lower halves of the connecting plates of any two adjacent inclined plates come into contact with each other, thus forming a pyramidal structure with the tip pointing downwards.

[0012] Furthermore, an inner hinge seat is fixedly installed at the lower end of the core rod, and an outer hinge seat is fixedly installed on the inner side of the connecting plate of the inclined plate. The number of outer hinge seats and inner hinge seats are equal and correspond one-to-one. A connecting rod is installed between the corresponding inner hinge seat and outer hinge seat, and the two ends of the connecting rod are hinged to the inner hinge seat and the outer hinge seat respectively.

[0013] The beneficial effects of this utility model compared to the prior art are as follows:

[0014] I. Structural Stability

[0015] By merging the tips of the "slanted plates" and tightly fitting them onto the column, the stability of the structure is significantly enhanced, avoiding the problem of column bottom deformation that may occur during the piling process.

[0016] II. Pile Driving Efficiency and Economy

[0017] Piling efficiency: The design of simultaneously driving the column and core rod, with the pointed structure at the bottom of the pile head, allows the column to be driven into the ground more quickly, significantly improving piling efficiency.

[0018] Economic efficiency of piling: It avoids the need to purchase new drilling equipment.

[0019] III. Optimization of the Pile Head Separation and Pull-out Process

[0020] Pile head detachment: Hammer the core rod separately to facilitate the detachment of the pile head from the column; pull the core rod upward to cause the upper end of the inclined plate to contract and the lower end to open, so that the inclined plate can be pulled out of the column, simplifying the extraction process and avoiding extraction difficulties caused by the pile head sticking to the column.

[0021] Reduced pull-out resistance: The use of a high-frequency vibration device to loosen the surrounding soil effectively reduces pull-out resistance, making the pile extraction process smoother.

[0022] IV. Improvements in Sealing and Grouting Techniques

[0023] Enhanced sealing effect: Self-compacting cement slurry is injected into the column for sealing, ensuring the tightness and durability of the seal and avoiding groundwater leakage or soil erosion caused by poor sealing.

[0024] Grouting Operation Specifications: Regular grouting operations ensure the durability and reliability of the sealing effect, further improving the stability and service life of the column.

[0025] V. Enhanced overall structural safety

[0026] The method of compacting the soil around the column instead of drilling was adopted, which avoids the problem that the surrounding soil may not be sufficiently compacted due to the loss of the original soil. Attached Figure Description

[0027] The present invention will now be described in further detail with reference to the accompanying drawings:

[0028] Figure 1 This is a three-dimensional schematic diagram of the entire utility model;

[0029] Figure 2 This is a front view of the entire utility model;

[0030] Figure 3 This is a frontal sectional view of the present invention;

[0031] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle;

[0032] Figure 5 yes Figure 3 A magnified view of a portion of point B in the middle;

[0033] Figure 6 This is a structural diagram of the pile head;

[0034] Figure 7 This is a schematic diagram of the connection between the pile head and the core rod;

[0035] Figure 8 This is a schematic diagram of the oblique plate structure. Figure 1 ;

[0036] Figure 9 This is a schematic diagram of the oblique plate structure. Figure 2 ;

[0037] Figure 10 This is a schematic diagram of a structure in which the lower end of a ring of inclined plates opens after detaching from the column;

[0038] Figure 11 It is a schematic diagram of a structure in which a ring of inclined plates opens at the bottom and enters the opening at the bottom of the column;

[0039] Figure 12 This is a schematic diagram of the structure after the lower end of a ring of inclined plates opens;

[0040] Among them, 1 is the column, 2 is the core rod, 3 is the pile head, 4 is the inclined plate, 5 is the striking block, 6 is the connecting plate, 7 is the arc plate, 8 is the snap plate, 9 is the inner hinge seat, 10 is the outer hinge seat, and 11 is the connecting rod. Detailed Implementation

[0041] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. The technical solution of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0042] like Figure 1 As shown in Figure 12, this utility model provides a recyclable column driving structure for penetrating hard soil layers, including a column 1, a core rod 2, and a pile head 3. The pile head 3 includes a ring of inclined plates 4. A core rod 2 is inserted into the inside of the column 1. The lower end of the core rod 2 is hinged to the ring of inclined plates 4. The lower ends of the ring of inclined plates 4 are in contact with each other, and the upper end of the ring of inclined plates 4 is engaged with the lower opening of the column 1.

[0043] The column 1 is a cylindrical structure with openings at both the top and bottom.

[0044] The core rod 2 is a straight rod-shaped structure. The core rod 2 is located at the internal axis of the column 1. A striking block 5 is fixedly installed at the upper end of the core rod 2. The striking block 5 is located at the upper opening of the column 1.

[0045] The inclined plate 4 includes a connecting plate 6, an arc plate 7, and a snap-fit ​​plate 8. The connecting plate 6 is an inclined planar plate structure. The lower half of the connecting plate 6 is an isosceles triangular plate structure, and the upper half of the connecting plate 6 is a square plate structure. The arc plate 7 and the snap-fit ​​plate 8 are both vertically arranged arc-shaped plate structures. The upper end of the connecting plate 6 is fixedly connected to the lower end of the arc plate 7. The lower end of the snap-fit ​​plate 8 is fixedly connected to the inner side of the connecting plate 6 near the upper end. The snap-fit ​​plate 8 is located inside the arc plate 7. The gap between the snap-fit ​​plate 8 and the arc plate 7 forms an upward-opening snap-fit ​​groove.

[0046] The lower half of the connecting plate 6 of any two adjacent oblique pieces 4 comes into contact with each other, thus forming a pyramidal structure with the tip pointing downwards.

[0047] The snap-fit ​​grooves at the upper end of the inclined plate 4 are snapped into the lower opening of the column 1.

[0048] An inner hinge seat 9 is fixedly installed at the lower end of the core rod 2, and an outer hinge seat 10 is fixedly installed on the inner side of the connecting plate 6 of the inclined plate 4. The number of outer hinge seats 10 and inner hinge seats 9 are equal and correspond one-to-one. A connecting rod 11 is provided between the corresponding inner hinge seat 9 and outer hinge seat 10. The two ends of the connecting rod 11 are respectively hinged to the inner hinge seat 9 and the outer hinge seat 10.

[0049] The working principle of this utility model is as follows:

[0050] Before the column 1 is driven in, the locking grooves at the upper end of the inclined plate 4 are engaged with the lower opening of the column 1; the core rod 2 is adjusted to the lowest position inside the column 1 to achieve the best force state; at this time, the upper surface of the striking block 5 is slightly higher than the upper end of the column 1 to ensure stability during operation.

[0051] Next, precisely align the tip of the lower side of the beveled plate 4 with the driving point, and fix the column 1 vertically to the ground. Then, use a pile driver to simultaneously strike the upper end of the column 1 and the upper end of the striking block 5. The tip of the lower side of the beveled plate 4 can smoothly pass through the hard layer or other obstacle layer, firmly driving the column 1 into the ground.

[0052] Once column 1 penetrates the hard soil layer or other obstacle layer and reaches the predetermined piling position, the simultaneous hammering of column 1 and striking block 5 ceases. Instead, the striking block 5 at the upper end of core rod 2 is struck alone. Core rod 2, through a connecting rod 11 at its lower end, drives a ring of inclined plates 4 to continue moving downwards. During this process, a downward relative displacement occurs between core rod 2 and column 1 until the locking groove on the ring of inclined plates 4 completely disengages from column 1. At this point, the pile head 3 disengages from column 1.

[0053] After the locking groove on the inclined plate 4 disengages from the column 1, the core rod 2 is pulled upward. The core rod 2 drives the arc plate 7 at the upper end of the inclined plate 4 to gradually contract through the connecting rod 11, and the tip of the lower side of the inclined plate 4 gradually opens, so that the arc plate 7 at the upper end of the inclined plate 4 contracts into the interior of the lower opening of the column 1, thereby ensuring that the pile head 3 can be smoothly pulled out of the column 1 later.

[0054] After the pile head 3 is detached, a high-frequency vibration device is immediately installed on the upper end of the core rod 2. This device is activated to loosen the surrounding soil using high-frequency vibration, thereby reducing the pull-out resistance. Simultaneously, a specialized pile-pulling device is used to pull out the core rod 2.

[0055] After removing the core rod 2, self-compacting mortar is injected into the column 1 to seal the pile head 3 and any gaps that may have formed during driving. Grouting is also performed on the outer side of the column 1 to address any gaps. The grout level inside the column 1 is ensured to be flush with the ground surface. Furthermore, to enhance the sealing effect, grouting is performed every half hour, for a total of two grouting operations. After each grouting operation, it is essential to ensure that the grout is flush with the ground surface.

[0056] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A recyclable post-driving structure for penetrating hard soil layers, characterized in that: It includes a column (1), a core rod (2), and a pile head (3). The pile head (3) includes a ring of inclined plates (4). A core rod (2) is inserted inside the column (1). The lower end of the core rod (2) is hinged to the ring of inclined plates (4). The lower ends of the ring of inclined plates (4) are in contact with each other. The upper end of the ring of inclined plates (4) is engaged with the lower opening of the column (1).

2. The recyclable post-driving structure for penetrating hard soil layers according to claim 1, characterized in that: The column (1) is a cylindrical structure with openings at both the top and bottom.

3. A recyclable post-driving structure for penetrating hard soil layers according to claim 1, characterized in that: The core rod (2) is a straight rod structure. The core rod (2) is located at the internal axis of the column (1). A striking block (5) is fixedly installed at the upper end of the core rod (2). The striking block (5) is located at the upper opening of the column (1).

4. A recyclable post-driving structure for penetrating hard soil layers according to claim 1, characterized in that: The inclined plate (4) includes a connecting plate (6), an arc plate (7), and a snap-fit ​​plate (8). The connecting plate (6) is an inclined planar plate structure. The lower half of the connecting plate (6) is an isosceles triangular plate structure, and the upper half of the connecting plate (6) is a square plate structure. The arc plate (7) and the snap-fit ​​plate (8) are both vertically arranged arc-shaped plate structures. The upper end of the connecting plate (6) is fixedly connected to the lower end of the arc plate (7), and the lower end of the snap-fit ​​plate (8) is fixedly connected to the inner side of the connecting plate (6) near the upper end. The snap-fit ​​plate (8) is located inside the arc plate (7).

5. A recyclable post-driving structure for penetrating hard soil layers according to claim 4, characterized in that: The gap between the snap-fit ​​plate (8) and the arc plate (7) forms an upward-opening snap-fit ​​groove, and the snap-fit ​​grooves at the upper end of the inclined plate (4) snap-fit ​​with the lower end opening of the column (1).

6. A recyclable post-driving structure for penetrating hard soil layers according to claim 4, characterized in that: The lower half of the connecting plate (6) of any two adjacent oblique pieces (4) comes into contact with each other, thus forming a pyramidal structure with the tip pointing downwards.

7. A recyclable post-driving structure for penetrating hard soil layers according to claim 4, characterized in that: An inner hinge seat (9) is fixedly installed at the lower end of the core rod (2), and an outer hinge seat (10) is fixedly installed on the inner side of the connecting plate (6) of the inclined plate (4). The number of outer hinge seats (10) and inner hinge seats (9) are equal and correspond one to one. A connecting rod (11) is provided between the corresponding inner hinge seat (9) and outer hinge seat (10). The two ends of the connecting rod (11) are respectively hinged to the inner hinge seat (9) and the outer hinge seat (10).

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