Support structure for soft ground and construction method

Abstract

The application discloses a support structure for soft foundation, which comprises a drill rod body, a bearing connecting piece and a support template, the first end of the drill rod body is formed with a drill bit, and the bearing connecting piece is assembled at the tail end of the drill rod body; the bearing connecting piece comprises an upper limiting panel, a lower limiting panel, a support part and a connecting part, the support part is connected between the upper limiting panel and the lower limiting panel, so that the limiting opening for limiting the support template is formed between the upper limiting panel and the lower limiting panel, and the bearing connecting piece is assembled with the drill rod body through the connecting part to form a whole, so that the support template is supported by the drill rod body through the bearing connecting piece; the problem of insufficient bearing capacity of the soft foundation can be solved, the operation efficiency of the preset building structure on the top of the soft foundation is improved, the safety hidden danger is reduced, and the construction quality is improved.

Description

Technical Field

[0001] This invention relates to the field of soft soil foundation construction, and specifically to a support structure and construction method for soft soil foundations. Background Technology

[0002] Soft soil foundations refer to foundations primarily composed of silt, silty soil, fill, miscellaneous fill, or other highly compressible soils. Special soil and rock foundations refer to foundations with unique material composition, structure, and engineering properties, such as collapsible loess foundations, expansive soil foundations, red clay foundations, frozen soil foundations, saline soil foundations, and karst foundations. With the increasing complexity of building environments, soft soil foundations are frequently encountered. The quality of their treatment directly affects the overall quality of the project. Proper soft soil foundation treatment and superstructure design can mitigate and eliminate the adverse effects of soft soil foundations on the superstructure. Therefore, research on the construction quality control of soft soil layers has significant practical implications.

[0003] Common foundation treatment methods can be broadly classified into six categories: soil replacement cushion method, deep compaction or replacement method, drainage consolidation method, cementation method, reinforcement method, and thermal method. In actual on-site construction, the foundation treatment plan should be comprehensively determined based on the principles of reliability, economy, advancement and practicality, and taking into account factors such as building conditions, foundation conditions, environmental impact and construction conditions.

[0004] In some construction projects, the design did not require treatment of the foundation at certain locations, but in reality, the soil layers needed to be reinforced or even backfilled to meet construction conditions. For example, if the site construction encountered soft soil layers with insufficient bearing capacity, it would be impossible to erect internal scaffolding, or if the site construction encountered soft soil layers with insufficient bearing capacity, it would be impossible to support the ground beams, etc. This seriously increased construction costs, extended construction time, posed safety hazards, and had a negative impact on quality control, etc.

[0005] Therefore, to solve the above problems, a support structure and construction method for soft foundations are needed to address the issue of insufficient bearing capacity of soft foundations, improve the operational efficiency of pre-built structures on top of soft foundations, reduce safety hazards, and improve construction quality. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to overcome the defects in the prior art, and to provide a support structure and construction method for soft foundations, which can solve the problem of insufficient bearing capacity of soft foundations, improve the work efficiency of pre-built structures on top of soft foundations, reduce safety hazards, and improve construction quality.

[0007] The present invention relates to a support structure and construction method for soft foundations, comprising a drill rod body, a load-bearing connector, and a support template. The drill rod body has a drill bit at its leading end, and the load-bearing connector is assembled at the trailing end of the drill rod body. The load-bearing connector includes an upper limit panel, a lower limit panel, a support portion, and a connecting portion. The upper and lower limit panels are arranged parallel to a horizontal plane. The support portion connects between the upper and lower limit panels, forming a limiting opening between them to limit the support template. One end of the support template is limited within the limiting opening. The connecting portion connects to the bottom of the lower limit panel. The load-bearing connector is assembled integrally with the drill rod body via the connecting portion, so that the support template is supported by the drill rod body through the load-bearing connector.

[0008] Furthermore, the bearing connector includes at least two oppositely arranged at both ends of the support template, the number of drill rod bodies is the same as the number of bearing connectors, and the drill rod bodies are connected to the bearing connectors in a one-to-one correspondence.

[0009] Furthermore, the drill pipe body includes a pilot section assembled as a whole and several drill body sections. The drill bit is formed at the beginning of the pilot section. The end of the pilot section is formed into a drill pipe body of different lengths by assembling drill body sections of different numbers. The bearing connector is assembled at the end of the drill body located at the end of the drill pipe body.

[0010] Furthermore, the end of the pilot section is recessed inward to form a limiting groove I, and the beginning end of the drill body protrudes outward to form a limiting post I. The limiting post I is limited within the limiting groove I, so that the pilot section and the drill body assembled therewith form an integral unit; the end of the drill body is recessed inward to form a limiting groove II, and the limiting post I of the next level drill body is limited within the limiting groove II of the previous level drill body, so that adjacent drill body assemblies form an integral unit; the connecting part is limited within the limiting groove II of the drill body assembled therewith, so that the supporting connecting part and the drill body assembled therewith form an integral unit.

[0011] Furthermore, the inner wall surface of the limiting groove I and the inner wall surface of the limiting groove are both provided with internal threads, and the outer wall surface of the limiting post I and the outer wall surface of the connecting part are both provided with external threads, and the internal threads and external threads are matched with a screw connection.

[0012] Furthermore, the support portion is columnarly supported at the center of the upper limit panel and the center of the lower limit panel, so that the projection of the support portion, the upper limit panel and the lower limit panel in the horizontal direction forms an "I" shape.

[0013] Furthermore, the connecting portion is formed at the center of the lower limiting panel, and the connecting portion and the supporting portion are arranged opposite each other in the height direction. The minimum diameter of the cross-section of the supporting portion is greater than the minimum diameter of the cross-section of the connecting portion.

[0014] Furthermore, it also includes drill body anti-pressure components arranged circumferentially on the drill pipe body, the drill body anti-pressure components being fixed to the circumferential outer wall of the drill pipe body, and the drill body anti-pressure components being a plurality of components arranged along the axial direction of the drill pipe body.

[0015] Furthermore, the drill body anti-pressure component is a cone shape with its outer diameter gradually decreasing from bottom to top. The drill body anti-pressure component is fixed to the drill rod body by means of a sleeve. The small diameter end of the drill body anti-pressure component extends upward to form a fixed end. The fixed end is fixed to the drill rod body by screws perpendicular to the drill rod body. There are several screws.

[0016] This solution also discloses a construction method based on the aforementioned support structure for soft foundations, comprising the following construction steps:

[0017] S1. Determine the installation location of the drill pipe body;

[0018] S2. Embed several drill pipe bodies at their respective preset points;

[0019] The drill rod body is embedded in the foundation by a hammer impactor. The hammer impactor includes a load-bearing plate and a connecting end connected to the center of the bottom of the load-bearing plate. The outer wall of the connecting end has an external thread. The connecting end can be screwed into the internal thread of the inner wall of any limiting groove I or the internal thread of the inner wall of the limiting groove, so that the drill rod body is embedded in the foundation in stages.

[0020] Before pre-embedding, make the hammer striking part and the pilot section form a whole or the drill body form a whole;

[0021] During pre-embedding, pressure is applied to the hammer striking component to bury the pre-set component connected to it into the foundation, and then the hammer striking component is removed; the pre-set component includes a pilot section and several sections of the drill body;

[0022] Before embedding the next level of preset components, first connect the next level of preset components with the previous level of preset components to form a whole. Then, make the hammer striking part and the preset component to be embedded into a whole. Apply pressure to the hammer striking part to embed the preset component connected to it into the foundation. Remove the hammer striking part and repeat this step until the drill rod body is embedded in the foundation.

[0023] Before pre-embedding the drill rod body, a predetermined number of drill body anti-compression components are fixed at predetermined positions on the drill rod body so that the drill body anti-compression components are buried in the foundation along with the drill rod body in the foundation.

[0024] S3. After the last stage of preset components is buried in the drill pipe body, remove the hammer striking part and then assemble the bearing connector onto the drill pipe body;

[0025] S4. A preset number of support templates are fixed on several drill pipe bodies through load-bearing connectors to form a support foundation.

[0026] The beneficial effects of this invention are as follows: This invention discloses a support structure and construction method for soft foundations, providing a support structure for soft foundations that is integral, has clear force transmission, is simple in structure, safe and reliable, saves materials, and is convenient to construct. The drill rod body is distributed point-to-point, and the use of bearing connectors strengthens the soft foundation by providing surface support to the support template. This solves the problem of insufficient bearing capacity in soft foundations, improves the efficiency of pre-built structures on top of soft foundations, reduces safety hazards, and improves construction quality. Based on research on the treatment of soft soil layers, this solution uses a support template in conjunction with bearing connectors as a cushion layer in the soft soil layer. This cushion layer can effectively improve bearing capacity, resist deformation and uneven settlement, and save costs and construction time. This solution increases the stress-bearing area and improves the stability of a single cushion layer by inserting several bearing connectors with hollowed-out centers into the support template. It is suitable for environments with low bearing capacity, such as temporary access roads and simple temporary cushion layer supports. This solution possesses the following characteristics: It ensures safe construction during foundation treatment; it boasts high and controllable bearing capacity, meeting actual on-site bearing requirements and effectively improving construction quality; it is cost-effective, requiring minimal replacement and compaction, necessitating minimal labor and materials; the construction equipment is simple, and the foundation treatment process is straightforward; the simple and fast construction process effectively shortens the construction period; compared to previous foundation cushion treatment methods, this solution significantly improves speed, greatly accelerating construction progress; it features prominent core processes and advanced key technologies, enhancing construction technology; it is relatively simple to operate, reducing equipment and personnel input and greatly improving construction efficiency; simultaneously, it makes bearing capacity more controllable, effectively improving construction quality, resulting in significant economic and social benefits; the segmented drill rod body design adapts to varying depths of soft soil layers at pre-embedded points, allowing for adjustments to the number of drill rod segments based on actual needs, overcoming the difficulty of foundation construction in areas with uneven point load distribution. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0028] Figure 1 This is a schematic diagram of the connection between the pilot section and the hammer striking component of the present invention;

[0029] Figure 2 This is a schematic diagram of the connection between the pilot section, the drill body, and the hammer striking component of the present invention.

[0030] Figure 3 This is a schematic diagram of the structure of the present invention, which includes a pilot section with a drill body anti-compression component, a drill body, and a hammer impact component.

[0031] Figure 4 This is a schematic diagram of the connection between the drill rod body with drill body pressure-resistant component and the bearing connector of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the drill pipe body and the load-bearing connector of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the bearing connector of the present invention, which connects a drill rod body and a support template.

[0034] Figure 7 This is a schematic diagram of the structure of the present invention. Detailed Implementation

[0035] Figure 1 As shown in the schematic diagram of the present invention, the support structure for soft foundation in this embodiment includes a drill rod body, a bearing connector, and a support template 1. The drill bit is formed at the head end of the drill rod body, and the bearing connector is assembled at the end of the drill rod body. The bearing connector includes an upper limit panel 4, a lower limit panel 5, a support part 6, and a connecting part 7. The upper limit panel 4 and the lower limit panel 5 are arranged parallel to the horizontal plane. The support part 6 is connected between the upper limit panel 4 and the lower limit panel 5, so that a limiting opening 9 for limiting the support template 1 is formed between the upper limit panel 4 and the lower limit panel 5. One end of the support template 1 is limited in the limiting opening 9. The connecting part 7 is connected to the bottom of the lower limit panel 5. The bearing connector is assembled with the drill rod body through the connecting part 7 to form an integral whole, so that the support template 1 is supported by the drill rod body through the bearing connector. The bearing connector includes at least two oppositely arranged at both ends of the support template 1. The number of drill rod bodies is the same as the number of bearing connectors, and the drill rod bodies and bearing connectors are connected in a one-to-one correspondence.

[0036] The purpose of this invention is to provide a support structure for soft soil foundations that features good integrity, clear force transmission, simple construction, safety and reliability, material saving, and convenient construction. The drill rod body, distributed at points, strengthens the soft soil foundation through the use of load-bearing connectors, enabling the support template 1 to provide surface support. This solves the problem of insufficient bearing capacity in soft soil foundations, improves the operational efficiency of pre-built structures on top of soft soil foundations, reduces safety hazards, and enhances construction quality. Based on research into the treatment of soft soil layers, this solution uses the support template 1 in conjunction with load-bearing connectors as a cushion layer on the soft soil layer. This cushion layer effectively improves bearing capacity, resists deformation and uneven settlement, and saves materials. This solution saves costs and construction time. It increases the stress-bearing area and improves the stability of individual subbase layers by inserting several load-bearing connectors with a central hollow core into the support template 1. It is suitable for environments with low load-bearing capacity, such as temporary access roads and simple temporary subbase supports. This solution has the following characteristics: safe construction is ensured during foundation treatment; it has the advantage of high and controllable load-bearing capacity, meeting the actual load-bearing needs on site and effectively improving construction quality; it is low-cost, requiring minimal replacement and compaction, and minimal labor and materials; the construction equipment is simple, and the foundation treatment process is convenient; the construction process is simple and fast, effectively shortening the construction period.

[0037] Compared with previous foundation pad treatment methods, this construction scheme significantly improves the speed and can greatly accelerate the construction progress; it highlights the core process and advanced key technologies, improving the level of construction technology; it is relatively simple to operate, reducing the investment of equipment and personnel, and greatly improving construction efficiency; at the same time, it makes the bearing capacity more controllable, effectively improving the construction quality, and resulting in significant economic and social benefits.

[0038] In this embodiment, the drill rod body includes a pilot section 2 assembled as a whole and several drill body sections 3. The drill bit is formed at the beginning of the pilot section 2. The end of the pilot section 2 is formed by assembling drill body sections 3 of different lengths. The load-bearing connector is assembled at the end of the drill body 3 located at the end of the drill rod body. The segmented drill rod body can adapt to the varying depths of soft soil layers at the pre-embedded points. The number of drill body sections 3 can be increased or decreased according to actual needs, overcoming the problem of difficult foundation construction due to uneven point load distribution. The drill rod body is cylindrical, and the drill bit is conical with its tip pointing downwards.

[0039] In this embodiment, the end of the pilot section 2 is recessed inward to form a limiting groove I, and the beginning end of the drill body 3 protrudes outward to form a limiting post I. The limiting post I is limited within the limiting groove I, so that the pilot section 2 and the drill body 3 assembled therewith form an integral unit. The end of the drill body 3 is recessed inward to form a limiting groove II. The limiting post I of the next-level drill body 3 is limited within the limiting groove II of the previous-level drill body 3, so that adjacent drill bodies 3 are assembled into an integral unit. The connecting part 7 is limited within the limiting groove II of the drill body 3 assembled therewith, so that the supporting connecting part and the drill body 3 assembled therewith form an integral unit. The inner wall surface of the limiting groove I and the inner wall surface of the limiting groove are both provided with internal threads, and the outer wall surface of the limiting post I and the outer wall surface of the connecting part 7 are both provided with external threads. The internal threads and external threads are matched with a screw connection. This solution uses mortise and tenon joints and screw connections to achieve fixed connections between the pilot section 2 and the drill body 3, between the upper-level drill body 3 and the lower-level drill body 3, and between the drill body 3 and the connecting part 7. The assembly method is convenient, quick, safe and reliable, and has the beneficial effects of low construction cost and improved foundation bearing capacity. In addition, this solution greatly shortens the construction period of the pre-built building located on a soft foundation.

[0040] In this embodiment, the support part 6 is columnarly supported at the center of the upper limit panel 4 and the center of the lower limit panel 5, so that the projection of the support part 6, the upper limit panel 4, and the lower limit panel 5 in the horizontal direction forms an "I" shape. The connecting part 7 is formed at the center of the lower limit panel 5. The connecting part 7 and the support part 6 are arranged opposite each other in the height direction. The minimum diameter of the cross-section of the support part 6 is greater than the minimum diameter of the cross-section of the connecting part 7. As shown in the figure, the "I"-shaped structure of the bearing connector can satisfy the clamping and limiting of the preset support template 1, improve the connection reliability of the support template 1 at the assembly node, and both the support part 6 and the connecting part 7 are columnar structures. The minimum diameter of the cross-section of the support part 6 is greater than the minimum diameter of the cross-section of the connecting part 7, further improving the structural strength of the bearing connector between the drill pipe body and the support template 1, and meeting the connection requirements of the preset situation.

[0041] In this embodiment, a drill body anti-pressure component 10 is also included, which is arranged circumferentially on the drill pipe body. The drill body anti-pressure component 10 is fixed to the circumferential outer wall of the drill pipe body. Several drill body anti-pressure components 10 are arranged along the axial direction of the drill pipe body. The drill body anti-pressure component 10 is tapered with an outer diameter that gradually decreases from bottom to top. The drill body anti-pressure component 10 is fixed to the drill pipe body by a sleeve. The small diameter end of the drill body anti-pressure component 10 extends upward to form a fixed end. The fixed end is fixed to the drill pipe body by screws 11 perpendicular to the drill pipe body. Several screws are used to ensure the stability and structural strength of the drill body anti-pressure component 10 and the drill pipe body as a whole. The arrangement of the drill body anti-compression component 10 can improve the structural strength of the drill rod body and the foundation as a whole. Due to the softness of the foundation, the drill body anti-compression component 10 can be smoothly driven into the foundation. As the drill rod body sinks deeper, the soft soil around the drill body anti-compression component 10 will be backfilled, so that the drill body anti-compression component 10 is buried in the foundation, improving the stability of the drill rod body and the foundation as a whole, and the load-bearing effect is better. At the same time, it can also ensure the centering of the drill rod body, prevent the drill rod body from deviating, and improve the reliability of the support for the preset support template 1. The number of drill body anti-compression components 10 arranged on the drill rod body can be adjusted according to the actual situation.

[0042] This solution also discloses a construction method based on the aforementioned support structure for soft foundations, comprising the following construction steps:

[0043] S1. The drill rod body consists of several rods, and the corresponding burial points of each drill rod body are determined.

[0044] S2. Embed several drill pipe bodies at their respective preset points;

[0045] The drill rod body is embedded in the foundation via a hammer impactor 12. The hammer impactor 12 includes a load-bearing plate and a connecting end connected to the center of the bottom of the load-bearing plate. The outer wall of the connecting end has external threads, and the connecting end can be screwed into the internal threads of any limiting groove I, allowing the drill rod body to be embedded in the foundation in stages. The load-bearing plate is parallel to the horizontal plane.

[0046] Before pre-embedding, make the heavy hammer striking part 12 and the pilot section 2 form a whole or the drill body 3 form a whole;

[0047] During pre-embedding, pressure is applied to the hammer striking part 12 to bury the pre-set component connected to it into the foundation, and then the hammer striking part 12 is removed; the pre-set component includes a pilot section 2 and several sections of drill body 3; this solution uses existing mechanical tools such as cranes to hammer the drill rod body into the soil at a preset height; details will not be elaborated here.

[0048] Before embedding the next level of preset components, first connect the next level of preset components with the previous level of preset components to form a whole, then make the hammer striking part 12 and the preset component to be embedded into a whole, apply pressure to the hammer striking part 12 to embed the preset component connected to it into the foundation, remove the hammer striking part 12, and repeat this step until the drill rod body is embedded in the foundation.

[0049] Before pre-embedding the drill rod body, a preset number of drill body anti-compression components 10 are fixed at a preset position on the drill rod body so that the drill body anti-compression components 10 are buried in the foundation along with the drill rod body in the foundation.

[0050] S3. After the last stage of preset components is buried in the drill pipe body, remove the hammer striking part 12, and then assemble the bearing connector onto the drill pipe body.

[0051] S4. A preset number of support templates 1 are fixed on several drill rod bodies through load-bearing connectors to form a support foundation.

[0052] The purpose of this invention is to provide a support structure for soft soil foundations that features good integrity, clear force transmission, simple construction, safety and reliability, material saving, and convenient construction. The drill rod body, distributed at points, strengthens the soft soil foundation through the use of bearing connectors, allowing the support template 1 to provide surface support. This solves the problem of insufficient bearing capacity in soft soil foundations, improves the efficiency of pre-built structures on top of soft soil foundations, reduces safety hazards, and improves construction quality. Based on research into the treatment of soft soil layers, this solution uses the support template 1 in conjunction with bearing connectors as a cushion layer in the soft soil layer. This cushion layer effectively improves bearing capacity, resists deformation and uneven settlement, and saves costs and construction time. This solution increases the stress-bearing area and improves the stability of individual cushion layers by inserting several bearing connectors with hollowed-out centers into the support template 1. It is suitable for environments with low bearing capacity, such as temporary access roads and simple temporary cushion layer supports. This solution has the following characteristics: [Further details about the foundation treatment are needed for a complete translation.] The process ensures safe construction; it boasts high and controllable bearing capacity, meeting the actual bearing requirements of the site and effectively improving construction quality; it is cost-effective, requiring minimal replacement and compaction, and necessitates minimal labor and materials; the construction equipment is simple, and the foundation treatment process is convenient; the construction process is simple and fast, effectively shortening the construction period; compared to previous foundation cushion treatment methods, this construction scheme significantly improves speed, greatly accelerating the construction progress; the core process is prominent, and the key technologies are advanced, improving the level of construction technology; the operation is relatively simple, reducing the investment in equipment and personnel, and greatly improving construction efficiency; at the same time, it makes the bearing capacity more controllable, effectively improving construction quality, with significant economic and social benefits; the segmented drill rod body can adapt to the varying depths of soft soil layers at the pre-embedded points, and the number of drill rod sections can be increased or decreased according to actual needs, overcoming the problem of uneven point load distribution in foundation construction; the drill rod body is cylindrical.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A support structure for soft foundations, characterized in that: The system includes a drill pipe body, a load-bearing connector, and a support template. The drill bit is formed at the leading end of the drill pipe body, and the load-bearing connector is assembled at the trailing end of the drill pipe body. The load-bearing connector includes an upper limit panel, a lower limit panel, a support portion, and a connecting portion. The upper and lower limit panels are arranged parallel to a horizontal plane. The support portion connects between the upper and lower limit panels, forming a limiting opening between them to limit the support template. One end of the support template is limited within the limiting opening. The connecting portion connects to the bottom of the lower limit panel. The load-bearing connector is assembled integrally with the drill pipe body through the connecting portion, so that the support template is supported by the drill pipe body through the load-bearing connector. The system also includes drill body pressure-resistant components arranged circumferentially around the drill pipe body. These components are fixed to the circumferential outer wall of the drill pipe body, and consist of several components arranged axially along the drill pipe body. The drill body pressure-resistant component is tapered, with its outer diameter gradually decreasing from bottom to top. The drill rod body includes a pilot section and several drill body sections assembled as a whole. The drill bit is formed at the beginning of the pilot section. The end of the pilot section is assembled with drill body sections of different lengths to form drill rod bodies of different lengths. The bearing connector is assembled at the end of the drill body located at the end of the drill rod body. The end of the pilot section is recessed inward to form a limiting groove I. The beginning of the drill body protrudes outward to form a limiting post I. The limiting post I is limited within the limiting groove I, so that the pilot section and the drill body assembled therewith form a whole. The end of the drill body is recessed inward to form a limiting groove II. The drill body limiting post I located at the next level is limited within the drill body limiting groove II of the previous level, so that adjacent drill bodies are assembled as a whole. The connecting part is limited within the drill body limiting groove II assembled therewith, so that the bearing connector and the drill body assembled therewith form a whole.

2. The support structure for soft foundations according to claim 1, characterized in that: The load-bearing connector includes at least two oppositely arranged at both ends of the support template. The number of drill rod bodies is the same as the number of load-bearing connectors, and the drill rod bodies are connected to the load-bearing connectors in a one-to-one correspondence.

3. The support structure for soft foundations according to claim 1, characterized in that: The inner wall surfaces of the limiting groove I and the limiting groove II are both provided with internal threads, and the outer wall surfaces of the limiting post I and the connecting part are both provided with external threads. The internal threads and external threads are matched with a screw connection.

4. The support structure for soft foundations according to claim 1, characterized in that: The support is columnar and rests at the center of the upper limit panel and the center of the lower limit panel, so that the projection of the support, the upper limit panel and the lower limit panel in the horizontal direction forms an "I" shape.

5. The support structure for soft foundations according to claim 4, characterized in that: The connecting part is formed at the center of the lower limit panel. The connecting part and the support part are arranged opposite each other in the height direction. The minimum diameter of the cross section of the support part is greater than the minimum diameter of the cross section of the connecting part.

6. The support structure for soft foundations according to claim 1, characterized in that: The drill body anti-pressure component is fixed to the drill rod body by means of a sleeve. The small diameter end of the drill body anti-pressure component extends upward to form a fixed end. The fixed end is fixed to the drill rod body by screws perpendicular to the drill rod body. There are several screws.

7. A construction method for a support structure for soft foundations based on any one of claims 1-6, characterized in that: The construction steps include the following: S1. Determine the installation location of the drill pipe body; S2. Embed several drill pipe bodies at their respective preset points; The drill rod body is embedded in the foundation by a hammer striking component. The hammer striking component includes a load-bearing plate and a connecting end connected to the center of the bottom of the load-bearing plate. The outer wall surface of the connecting end has an external thread. The connecting end can be screwed into the internal thread of the inner wall surface of any limiting groove I or the internal thread of the inner wall surface of limiting groove II, so that the drill rod body is embedded in the foundation in stages. Before pre-embedding, make the hammer striking part and the pilot section form a whole or the drill body form a whole; During pre-embedding, pressure is applied to the hammer striking component to bury the pre-set component connected to it into the foundation, and then the hammer striking component is removed; the pre-set component includes a pilot section and several sections of the drill body; Before embedding the next level of preset components, first connect the next level of preset components with the previous level of preset components to form a whole. Then, make the hammer striking part and the preset component to be embedded into a whole. Apply pressure to the hammer striking part to embed the preset component connected to it into the foundation. Remove the hammer striking part and repeat this step until the drill rod body is embedded in the foundation. Before pre-embedding the drill rod body, a predetermined number of drill body anti-compression components are fixed at predetermined positions on the drill rod body so that the drill body anti-compression components are buried in the foundation along with the drill rod body in the foundation. S3. After the last stage of preset components is buried in the drill pipe body, remove the hammer striking part and then assemble the bearing connector onto the drill pipe body; S4. A preset number of support templates are fixed on several drill pipe bodies through load-bearing connectors to form a support foundation.

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