Stirring pile supporting structure adopting #-shaped construction method

Abstract

The utility model relates to the technical field of building construction, in particular to a #-shaped construction method mixing pile supporting structure, H-shaped steel is inserted in the axis center of a cement mixing pile and comprises first section steel and second section steel, the first section steel is provided with a vertical longitudinal through groove, and the second section steel is fixedly provided with an elastic buffer strip matched with the longitudinal through groove; and an elastic layer is fixedly arranged between the inner wall of the longitudinal through groove and the elastic buffer strip. The problem that the H-shaped steel and the mixing pile are not matched due to the fact that the size of the cement mixing pile is changed is solved.

Description

Technical Field

[0001] The present application relates to the technical field of building construction, and in particular to a support structure of a mixing pile using a crisscross method. Background Art

[0002] Soil Mixing Wall (SMW), also known as the new cement-soil mixing wall or reinforced cement-soil mixing method, is a technique that uses a multi-axis drilling and mixing machine to drill to a certain depth on-site. A cement-based reinforcement (such as cement slurry) is sprayed at the drill bit and repeatedly mixed with the foundation soil to form a cement-soil mixture. Overlapping joints are used between construction units to enhance integrity and stability. Before the cement-soil mixture hardens, H-shaped steel or other profiles are often inserted as stress reinforcement until the cement hardens, ultimately forming a seamless underground wall with sufficient strength and rigidity.

[0003] In a crisscross-grid pile support structure, holes are first drilled at regular intervals and angles around the edges of the foundation pit or in the area requiring reinforcement. Cement slurry or other types of reinforcement materials are then poured into these holes, forming rows of mutually perpendicular reinforcement piles. These piles form a crisscross-grid arrangement underground, enhancing the foundation's bearing capacity and stability.

[0004] However, existing H-shaped steel, once inserted into a cement mixing pile, has a fixed shape and volume, resulting in several drawbacks. During the hardening process of the cement mixing pile, the cement shrinks and decreases in volume as it solidifies. This shrinkage can create gaps between the concrete and the steel when combined, negatively impacting the structural strength.

[0005] The changes in volume and size of cement mixing piles caused by the above principle can easily lead to mismatch between H-shaped steel and mixing piles. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this application is to propose a cross-shaped cement mixing pile support structure, which aims to solve the mismatch problem between H-shaped steel and mixing piles caused by changes in the volume and size of cement mixing piles.

[0007] The above-mentioned purpose of the present application is achieved through the following technical solutions: a cross-shaped cement mixing pile support structure, including a cement mixing pile, an H-shaped steel is inserted at the center of the axis of the cement mixing pile, and the H-shaped steel includes a first steel and a second steel. The first steel is provided with a vertical longitudinal groove, and the second steel is fixed with an elastic buffer strip matching the longitudinal groove, and an elastic layer is fixed between the inner wall of the longitudinal groove and the elastic buffer strip.

[0008] By adopting the above technical solution, the split design inside the H-shaped steel (the first steel section and the second steel section are connected by an elastic buffer strip and a longitudinal groove structure through an elastic layer) enables the H-shaped steel to flexibly respond to changes in the spacing between mixing piles caused by the stress release of the soil layer and the dimensional changes of the cement mixing piles during the hardening process, reducing the probability of the H-shaped steel bending deformation under external stress, and significantly improving the dynamic adaptability and stability of the support structure.

[0009] Furthermore, a plurality of connecting springs are provided between the first steel section and the second steel section, one end of the connecting spring is fixedly connected to the first steel section, and the other end is fixedly connected to the second steel section, and the plurality of connecting springs are arranged on the left and right sides of the elastic buffer strip.

[0010] By adopting the above technical solution, considering that the elastic buffer strip is subject to traction and tensile force and is prone to aging and falling off, a connecting spring is provided between the first and second steel sections to bear part of the traction force for the connection between the first and second steel sections, thereby ensuring the connection effect between the first and second steel sections.

[0011] Furthermore, a telescopic rod is sleeved on the central axis of each connecting spring, one end of the telescopic rod is fixedly connected to the first steel section, and the other end is fixedly connected to the second steel section.

[0012] By adopting the above technical solution, considering that when the H-shaped steel is inserted into the cement mixing pile, due to the split design of the H-shaped steel, when subjected to a force, it is easy for the first and second sections of the steel to separate first in contact with the cement mixing pile (the lower end portion), and the connecting spring cannot provide sufficient traction when subjected to the above force, a telescopic rod is provided to ensure a rigid connection when the H-shaped steel is inserted into the cement mixing pile.

[0013] Furthermore, a plurality of longitudinal reinforcing ribs are fixedly provided on the first steel section and the second steel section.

[0014] By adopting the above technical solution, the longitudinal reinforcement ribs provided on the first steel section and the second steel section significantly enhance the bearing capacity and bending strength of the steel sections, making the support structure more stable and reliable when subjected to lateral soil pressure.

[0015] Furthermore, guide portions are provided at the lower ends of the first and second steel sections.

[0016] By adopting the above technical solution, the guide design makes it easier and more accurate to position the H-beam (particularly its lower end) in the predetermined position when inserting the cement mixing pile. This avoids the problem of insufficient strength or reduced stability of the support structure caused by inaccurate insertion position.

[0017] Furthermore, an anchor nail is fixedly provided below the guide portion.

[0018] By adopting this technical solution, anchor bolts are fixed under the guide and deeply penetrated into the foundation soil, providing additional anchor points for the H-beam. This anchoring effect significantly strengthens the connection between the H-beam and the foundation soil, making the support structure more stable when subjected to lateral soil pressure.

[0019] Furthermore, the upper ends of the first steel section and the second steel section are both fixedly provided with lifting rings.

[0020] By adopting the above technical solution, the lifting ring at the upper end of the H-shaped steel facilitates the lifting and transportation process of the entire support structure and improves construction efficiency.

[0021] Furthermore, the elastic layer is made of elastic rubber material.

[0022] By adopting the above technical solution, the elastic layer is made of elastic rubber material, which ensures that the first steel section and the second steel section can maintain good sealing and vibration isolation effects when relative displacement occurs, while extending the service life of the support structure.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The split design of H-shaped steel combined with elastic buffer strips and elastic layers can effectively cope with the size changes of mixing piles, reduce bending deformation, and significantly improve the dynamic adaptability and stability of the support structure.

[0025] 2. The added connection spring and telescopic rod combination not only shares the traction force of the elastic buffer strip, but also ensures the rigid connection of the H-shaped steel during the insertion process, thereby enhancing the integrity and durability of the support structure.

[0026] 3. The introduction of longitudinal reinforcement ribs and anchor nails significantly improves the bearing capacity and bending strength of the H-shaped steel, and enhances the connection strength with the foundation soil, making the support structure more stable and reliable when bearing lateral soil pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 2 is a schematic diagram of the overall structure of the embodiment;

[0028] Figure 2 Schematic diagram of the explosion of H-beam in the embodiment.

[0029] Figure numerals: 1. connecting spring; 11. telescopic rod; 2. cement mixing pile; 4. H-shaped steel; 41. first steel; 42. second steel; 5. longitudinal through groove; 51. elastic buffer strip; 52. elastic layer; 7. longitudinal reinforcing rib; 8. guide part; 81. anchor nail; 9. lifting ring. DETAILED DESCRIPTION

[0030] The present application is further described in detail below with reference to the accompanying drawings.

[0031] Example, see Figure 1 and Figure 2 A support structure for cement mixing piles using a crisscross construction method includes a cement mixing pile 2, with an H-shaped steel 4 inserted at the center of the axis of the cement mixing pile 2. The H-shaped steel 4 includes a first steel 41 and a second steel 42. The first steel 41 is provided with a vertical longitudinal groove 5. The second steel 42 is fixedly provided with an elastic buffer strip 51 that matches the longitudinal groove 5. An elastic layer 52 is fixedly provided between the inner wall of the longitudinal groove 5 and the elastic buffer strip 51. The split design inside the H-shaped steel 4 (the elastic buffer strip 51 and the longitudinal groove 5 structure connected by the elastic layer 52 to the first steel 41 and the second steel 42) enables the H-shaped steel 4 to flexibly respond to changes in the spacing between the mixing piles caused by the stress release of the soil layer and the dimensional changes of the cement mixing piles 2 during the hardening process, reducing the probability of the H-shaped steel 4 bending and deforming under external stress, and significantly improving the dynamic adaptability and stability of the support structure.

[0032] In this embodiment, a plurality of connecting springs 1 are disposed between the first section steel 41 and the second section steel 42. One end of the connecting spring 1 is fixedly connected to the first section steel 41, and the other end is fixedly connected to the second section steel 42. The connecting springs 1 are arranged on both sides of the elastic buffer strip 51. Considering that the elastic buffer strip 51 is subject to traction and tensile forces and is prone to aging and falling off, the connecting springs 1 are disposed between the first section steel 41 and the second section steel 42 to bear part of the traction force for the connection between the first section steel 41 and the second section steel 42, thereby ensuring the connection between the first section steel 41 and the second section steel 42.

[0033] In this embodiment, a telescopic rod 11 is sleeved around the central axis of each connecting spring 1. One end of the telescopic rod 11 is fixedly connected to the first section steel 41, and the other end is fixedly connected to the second section steel 42. Considering that when the H-shaped steel 4 is inserted into the cement mixing pile 2, due to the split design of the H-shaped steel 4, when subjected to an applied force, the portions of the first section steel 41 and the second section steel 42 that first contact the cement mixing pile 2 (the lower end portions) are likely to separate. As a result, the connecting spring 1 is unable to provide sufficient traction when subjected to such an applied force. Therefore, the telescopic rod 11 is provided to ensure a rigid connection when the H-shaped steel 4 is inserted into the cement mixing pile 2.

[0034] In this embodiment, a plurality of longitudinal reinforcing ribs 7 are fixedly provided on the first section steel 41 and the second section steel 42. The longitudinal reinforcing ribs 7 provided on the first section steel 41 and the second section steel 42 significantly enhance the bearing capacity and bending strength of the section steel, making the support structure more stable and reliable when subjected to lateral earth pressure.

[0035] In this embodiment, guide portions 8 are provided at the lower ends of the first and second section steels 41, 42. The design of the guide portions 8 facilitates and accurately positions the H-shaped steel 4 (particularly its lower end) when inserted into the cement mixing pile 2. This avoids the problem of insufficient support structure strength or decreased stability caused by inaccurate insertion positioning.

[0036] In this embodiment, anchoring spikes 81 are fixedly installed below the guide portion 8. These anchoring spikes 81 are fixed below the guide portion 8 and penetrate deep into the foundation soil, providing additional anchoring points for the H-beam 4. This anchoring significantly strengthens the connection between the H-beam 4 and the foundation soil, making the support structure more stable when subjected to lateral soil pressure.

[0037] In this embodiment, the upper ends of the first section steel 41 and the second section steel 42 are fixedly provided with lifting rings 9. The lifting rings 9 on the upper ends of the H-section steel 4 facilitate the hoisting and transportation process of the entire support structure and improve construction efficiency.

[0038] In this embodiment, the elastic layer 52 is made of an elastic rubber material. This ensures good sealing and vibration isolation between the first and second profiled steels 41, 42 during relative displacement, while also extending the service life of the support structure.

[0039] Specific implementation process:

[0040] First, according to the design requirements, prepare the cement mixing pile 2 at the construction site or prefabrication site. The cement mixing pile 2 should ensure uniform quality, meet the strength standards, and have sufficient impermeability and durability. Apply adhesive to the inner wall of the longitudinal groove 5, and then lay the elastic layer 52 made of elastic rubber material on the inner wall of the groove to ensure that it fits tightly with the inner wall of the groove and the elastic buffer strip 51. Subsequently, a number of connecting springs 1 are installed between the first steel section 41 and the second steel section 42, and the two ends of the connecting spring 1 are respectively fixed on the first steel section 41 and the second steel section 42, and are arranged on the left and right sides of the elastic buffer strip 51. At the same time, a telescopic rod 11 is sleeved on the central axis of each connecting spring 1, and the two ends of the telescopic rod 11 are respectively fixedly connected to the first steel section 41 and the second steel section 42. Before the cement mixing pile 2 is completely hardened, use lifting equipment to insert the prefabricated H-shaped steel 4 (including the first steel section 41 and the second steel section 42) into the center of the axis of the mixing pile. During the insertion process, pay attention to maintaining the verticality of the H-beam and accurately aligning the guide portion 8 at its lower end with the insertion position of the mixing pile. Due to the design of the guide portion 8, the H-beam can be positioned more easily and accurately to the predetermined position.

[0041] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A support structure of a crisscross mixing pile, characterized in that: The invention comprises a cement mixing pile (2), wherein an H-shaped steel (4) is inserted at the center of the axis of the cement mixing pile (2), and the H-shaped steel (4) comprises a first shaped steel (41) and a second shaped steel (42), wherein the first shaped steel (41) is provided with a vertical longitudinal through groove (5), and the second shaped steel (42) is fixedly provided with an elastic buffer strip (51) matching the longitudinal through groove (5), and an elastic layer (52) is fixedly provided between the inner wall of the longitudinal through groove (5) and the elastic buffer strip (51).

2. The support structure of the crisscross mixing pile according to claim 1, characterized in that: A plurality of connecting springs (1) are provided between the first steel section (41) and the second steel section (42), one end of the connecting spring (1) is fixedly connected to the first steel section (41), and the other end is fixedly connected to the second steel section (42), and the plurality of connecting springs (1) are arranged on the left and right sides of the elastic buffer strip (51).

3. The support structure of the crisscross mixing pile according to claim 2, characterized in that: A telescopic rod (11) is sleeved on the central axis of each connecting spring (1); one end of the telescopic rod (11) is fixedly connected to the first steel section (41), and the other end is fixedly connected to the second steel section (42).

4. The support structure of the crisscross mixing pile according to claim 1, characterized in that: A plurality of longitudinal reinforcing ribs (7) are fixedly provided on the first steel section (41) and the second steel section (42).

5. The support structure of the crisscross mixing pile according to claim 1, characterized in that: The lower ends of the first steel section (41) and the second steel section (42) are both provided with guide portions (8).

6. The support structure of the crisscross mixing pile according to claim 5, characterized in that: An anchor nail (81) is fixedly provided below the guide portion (8).

7. The support structure of the crisscross mixing pile according to claim 1, characterized in that: The upper ends of the first section steel (41) and the second section steel (42) are both fixedly provided with hanging rings (9).

8. The support structure of the crisscross mixing pile according to claim 1, characterized in that: The elastic layer (52) is made of elastic rubber material.

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