Mortise and tenon type high-strength steel combined steel pipe supporting structure

Abstract

The utility model discloses a tenon-and-mortise type high-strength steel combined steel pipe supporting structure which comprises a plurality of supporting rod systems and servers arranged at the two ends of the supporting rod systems, the supporting rod systems are arranged in parallel, and auxiliary rods and diagonal draw bars are arranged between the adjacent supporting rod systems. The supporting rod system is formed by assembling a plurality of supporting steel pipes, the auxiliary rods, the diagonal draw bars and the supporting steel pipes form a net-shaped supporting system, the server is assembled on a steel enclosing purlin of a foundation pit supporting plate, and the server can apply prestress to the supporting rod system connected with the server. The scheme is safe, clean, energy-saving, low-carbon and environment-friendly, resource recycling can be achieved, pollution emission is controllable, and the scheme is economical and reliable, is an efficient, energy-saving, environment-friendly and sustainable development green foundation pit supporting technology, can replace a traditional foundation pit steel structure supporting technology, and has the advantages of being short in construction period, low in construction cost, small in environmental influence, good in safety performance and the like.

Description

Technical Field

[0001] This utility model relates to the technical field of foundation pit construction, and in particular to a tenon-and-mortise type high-strength steel composite steel pipe support structure. Background Technology

[0002] Traditional deep foundation pit steel support systems mainly include two technical solutions: large-diameter steel pipe supports and composite steel beam supports. Large-diameter steel pipe support systems employ flange-segmented connections, exhibiting excellent bending stiffness due to their annular closed-section characteristics. However, in actual engineering, they face challenges in component transportation and on-site hoisting; ultra-long pipes require specialized logistics solutions, and stringent precision control is required for node installation. Composite steel beam support systems primarily use hot-rolled H-beams, connected by transverse gusset plates to form a composite section structure. While their modular design allows for adjustment of support stiffness, they suffer from high prefabrication precision requirements and complex on-site assembly processes.

[0003] From an engineering implementation perspective, both systems have significant limitations: large-diameter steel pipe supports require substantial transport space due to their large individual component size, and the use of heavy lifting equipment significantly impacts construction efficiency; composite steel beam supports require precise control of steel cutting and plate positioning during the prefabrication stage, and on-site operations involve numerous high-strength bolt tightening and full-penetration welding processes, leading to extended construction periods. In terms of techno-economic efficiency, steel pipe supports inherently suffer from low material utilization and high structural void ratios, while composite steel beam supports exhibit relatively weaker stability than closed-section systems. The overall construction costs for both solutions are relatively high. These technical bottlenecks make it difficult for traditional support systems to meet the deformation control requirements of deep foundation pit engineering in complex geological environments. Utility Model Content

[0004] The purpose of this utility model is to provide a tenon-and-mortise type high-strength steel composite steel pipe support structure to address the above-mentioned shortcomings, thereby solving the problems of high cost and difficult construction of traditional large-diameter steel pipe supports and composite steel beam supports.

[0005] This utility model is achieved through the following solution:

[0006] A tenon-and-mortise type high-strength steel composite steel pipe support structure includes a support rod system and servo units disposed at both ends of the support rod system. The support rod system consists of multiple parallel lines, with auxiliary rods and diagonal braces disposed between adjacent support rod systems. The support rod system is assembled from multiple support steel pipes, and the auxiliary rods, diagonal braces, and support steel pipes form a mesh support system. The servo units are mounted on the steel walers of the foundation pit support plate, and the servo units are capable of applying prestress to the support rod systems connected to them.

[0007] Based on the above-mentioned tenon-and-mortise type high-strength steel composite steel pipe support structure, the two ends of the support steel pipe are respectively provided with connecting pin holes, which are symmetrically arranged at their respective ends. At the same time, reinforcing ribs are also provided on the inner side of the support steel pipe. Multiple reinforcing ribs are evenly arranged along the inner circumference of the support steel pipe, and the central angle between adjacent reinforcing ribs is the same.

[0008] Based on the above-mentioned tenon-and-mortise type high-strength steel composite steel pipe support structure, an outer sleeve is provided between adjacent support steel pipes. The outer sleeve includes connecting ears, a main body, and a limiting ring. The main body is a cylindrical structure, and the limiting ring is located at the center position in the length direction of the main body and is located inside the main body. The connecting ears are symmetrically arranged on the outer wall of the main body.

[0009] Based on the above-mentioned tenon-and-mortise type high-strength steel composite steel pipe support structure, the inner diameter of the main body is adapted to the outer diameter of the support steel pipe, so that the support steel pipe can be inserted into the main body. The main body is provided with a pin hole that cooperates with the connecting pin, and a pin is provided in the pin hole and the connecting pin hole.

[0010] Based on the above-mentioned tenon-and-mortise type high-strength steel composite steel pipe support structure, the connecting lug is provided with at least 3 connecting holes; the line connecting the connecting holes is arranged parallel to the central axis of the outer sleeve.

[0011] Based on the above-mentioned tenon-and-mortise type high-strength steel composite steel pipe support structure, the auxiliary rod includes a first rod body and first hinge ears provided on both sides; the first hinge ears are integrally formed with the first rod body, and the first hinge ears are provided with hinge holes that match the size of the connecting holes; the first hinge ears are connected to the central connecting holes on the connecting ears by a pin.

[0012] Based on the above-mentioned tenon-and-mortise type high-strength steel composite steel pipe support structure, the inclined tie rod includes a second rod body and a second hinge lug; the second rod body and the second hinge lug are separately arranged, the second rod body has external threads of predetermined length on both sides, and the second hinge lug has internal threads that match the external threads at the end of the second rod body, and the second hinge lug is connected to the second rod body through threaded engagement; the second hinge lug has a hinge hole that matches the size of the connecting hole; the second hinge lug is connected to the side connecting hole on the connecting lug by a pin.

[0013] Based on the above-mentioned tenon-and-mortise type high-strength steel composite steel pipe support structure, a conversion joint is connected to the outermost support steel pipe. The conversion joint includes a flange base and a support cylinder. The support cylinder is located at the center of the flange base. Each support cylinder is provided with a pin hole that matches the support steel pipe. The conversion joint is connected to the support steel pipe through the pin holes.

[0014] Based on the above-mentioned tenon-and-mortise type high-strength steel composite steel pipe support structure, a flange hole is provided in the circumferential position of the outer ring of the flange base, and a supporting outer rib is provided between adjacent flange holes. The supporting outer rib is evenly arranged in multiple positions along the outer wall of the support cylinder, and multiple supporting inner ribs are provided at the inner end of the support cylinder. The supporting inner ribs are evenly arranged along the inner side of the support cylinder.

[0015] Based on the above-mentioned tenon-and-mortise type high-strength steel composite steel pipe support structure, the support rod system is arranged in parallel with 5 rods, and adjacent support rod systems are connected by auxiliary rods and diagonal tie rods.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0017] 1. In this solution, the support system is assembled from multiple supporting steel pipes. These supporting steel pipes are then assembled with auxiliary rods and diagonal braces to form a mesh structure. Firstly, the support system is assembled from multiple small components, greatly reducing transportation difficulties. Secondly, the size of the mesh support system can be adjusted on-site according to the actual support distance required by the foundation pit, making it more flexible in use. Thirdly, the support system structure is simple and easy to assemble, reducing the difficulty of later installation and maintenance. In use, the mesh support system is placed on the steel waler. Prestress is applied to the support system via a servo motor, which strengthens the support for the foundation pit and makes the entire support system more stable.

[0018] 2. This solution is safe, clean, energy-saving, low-carbon, and environmentally friendly. It enables resource recycling, controls pollution emissions, and is economical and reliable. It is a highly efficient, energy-saving, environmentally friendly, and sustainable green foundation pit support technology that can replace the traditional steel structure support process for foundation pits. It has advantages such as short construction period, low construction cost, minimal environmental impact, and good safety performance. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0020] Figure 2 This is a top view of the overall structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the supporting steel pipe in this utility model;

[0022] Figure 4 This is a schematic diagram of the auxiliary rod in this utility model;

[0023] Figure 5 This is a schematic diagram of the diagonal tie rod in this utility model;

[0024] Figure 6 This is a schematic diagram of the outer sleeve structure in this utility model;

[0025] Figure 7 This is a schematic diagram of the server structure in this utility model;

[0026] Figure 8 This is a schematic diagram of the adapter structure in this utility model;

[0027] Figure 9 This is an exploded view of the end of the support rod system in this utility model;

[0028] Figure descriptions: 1. Support rod system; 2. Servo unit; 3. Auxiliary rod; 4. Diagonal tie rod; 5. Adapter joint; 11. Support steel pipe; 12. Connecting pin hole; 13. Reinforcing rib; 14. Outer sleeve; 15. Connecting ear; 16. Main body; 17. Limiting ring; 18. Connecting hole; 31. First rod body; 32. First hinge ear; 41. Second rod body; 42. Second hinge ear; 51. Flange base; 52. Support cylinder; 53. Flange hole; 54. Support outer rib; 55. Support inner rib. Detailed Implementation

[0029] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0030] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0033] Example 1

[0034] like Figures 1-9 As shown, this utility model provides a technical solution:

[0035] A tenon-and-mortise type high-strength steel composite steel pipe support structure includes, but is not limited to, a support rod system 1 and servo units 2 disposed at both ends of the support rod system 1. The support rod system 1 is arranged in parallel as multiple rods, and auxiliary rods 3 and diagonal braces 4 are disposed between adjacent support rod systems 1. The support rod system 1 is assembled from multiple support steel pipes 11. The auxiliary rods 3, diagonal braces 4 and support steel pipes 11 form a mesh support system. The servo units 2 are assembled on the steel walers of the foundation pit support plate. The servo units 2 can apply prestress to the support rod system 1 connected to them.

[0036] Based on the above structure, the support system 1 in this scheme is assembled from multiple support steel pipes 11. These support steel pipes 11 are also assembled with auxiliary rods 3 and tie rods 4, ultimately forming a mesh structure. On one hand, the support system is assembled from multiple small components, greatly reducing transportation difficulty. Furthermore, the size of the mesh support system can be adjusted on-site according to the actual support distance required for the foundation pit, making it more flexible in use. On the other hand, the support system structure of this scheme is simple and easy to assemble, reducing the difficulty of later installation and maintenance. In use, the mesh support system is placed on the steel waler, and prestress is applied to the support system 1 through the servo 2, which strengthens the support for the foundation pit and makes the entire support system more stable.

[0037] As an example, the supporting steel pipe 11 is provided with connecting pin holes 12 at both ends, and the connecting pin holes 12 are symmetrically arranged at their respective ends. At the same time, a reinforcing rib 13 is also provided on the inner side of the supporting steel pipe 11. Multiple reinforcing ribs 13 are evenly arranged along the inner ring surface of the supporting steel pipe 11, and the central angle between adjacent reinforcing ribs 13 is the same.

[0038] Based on the above structure, the two ends of the supporting steel pipe 11 are the stress-bearing ends, so it is necessary to set reinforcing ribs 13 to strengthen the hardness of the ends of the supporting steel pipe 11. Connecting pin holes 12 are set at both ends of the supporting steel pipe 11 to facilitate the later limiting of adjacent supporting steel pipes 11, so that the entire mesh system can be formed quickly.

[0039] As an example, an outer sleeve 14 is provided between adjacent supporting steel pipes 11. The outer sleeve 14 may include connecting ears 15, a body part 16 and a limiting ring 17. The body part 16 has a cylindrical structure. The limiting ring 17 is located at the center position in the length direction of the body part 16 and is located inside the body part 16. The connecting ears 15 are symmetrically arranged on the outer wall of the body part 16.

[0040] The inner diameter of the main body 16 is adapted to the outer diameter of the support steel pipe 11, so that the support steel pipe 11 can be inserted into the main body 16. A pin hole that mates with the connecting pin is provided on the main body 16, and a pin can be provided in the pin hole and the connecting pin hole 12.

[0041] At least three connecting holes 18 are provided on the connecting ear 15; the line connecting the connecting holes 18 is parallel to the central axis of the outer sleeve 14.

[0042] Based on the above structure, the main function of the limiting ring 17 is to restrict the position of the supporting steel pipe 11, so that the pin hole can quickly align with the connecting pin hole 12, and the pin can quickly connect the adjacent supporting steel pipes 11. By setting three connecting holes 18, the connecting holes 18 on both sides are for connecting with the adjacent supporting rod system 1 through the diagonal tie rod 4, and the connecting hole 18 in the center is for connecting with the adjacent supporting rod system 1 through the auxiliary rod 3, so that the adjacent supporting rod system 1 forms a stable mesh structure.

[0043] As an example, the auxiliary rod 3 may include a first rod body 31 and first hinge ears 32 provided on both sides; the first hinge ears 32 are integrally formed with the first rod body 31, and a hinge hole matching the size of the connecting hole 18 is provided on the first hinge ears 32; the first hinge ears 32 are connected to the center connecting hole 18 on the connecting ear 15 by a pin.

[0044] The tie rod 4 may include a second rod body 41 and a second hinge lug 42; the second rod body 41 and the second hinge lug 42 are separately arranged, and external threads of a predetermined length are provided on both sides of the second rod body 41. The second hinge lug 42 is provided with an internal thread that matches the external thread at the end of the second rod body 41. The second hinge lug 42 is connected to the second rod body 41 through threaded engagement; a hinge hole matching the size of the connecting hole 18 is provided on the second hinge lug 42; the second hinge lug 42 is connected to the side connecting hole 18 on the connecting lug 15 by a pin.

[0045] Based on the above structure, the distance between adjacent support rods 1 is fixed, so no special adjustment is needed. The auxiliary rod 3 is fixed and hinged. However, when diagonally pulling adjacent support rods, adjustment is required. Therefore, an adjustable-length tie rod 4 is used to achieve this adjustment. The specific adjustment steps involve rotating the end of the second rod body 41 through the second hinge lug 42 to achieve fine-tuning of the length. The adjustable-length tie rod can be made in different standard lengths, achieving a wide range of length adjustments. A hinged node is formed between the adjustable-length tie rod and the lug plate of the outer sleeve 14, enabling multi-angle connections on the horizontal plane.

[0046] As an example, a conversion joint 5 is connected to the outermost supporting steel pipe 11. The conversion joint 5 may include a flange base 51 and a support cylinder 52. The support cylinder 52 is located at the center of the flange base 51. Each support cylinder 52 is provided with a pin hole that matches the supporting steel pipe 11. The conversion joint 5 is connected to the supporting steel pipe 11 through the pin holes.

[0047] A flange hole 53 is provided in the circumferential position of the outer ring of the flange base 51. A supporting outer rib 54 is provided between adjacent flange holes 53. Multiple supporting outer ribs 54 are evenly arranged along the outer wall of the supporting cylinder 52. Multiple supporting inner ribs 55 are provided at the inner end of the supporting cylinder 52. The supporting inner ribs 55 are evenly arranged along the inner side of the supporting cylinder 52.

[0048] Based on the above structure, since the conversion joint 5 is the connection between the support rod system 1 and the servo 2, it will be subjected to a large tensile or compressive force. Setting it as a flange structure can increase the connection strength between the conversion joint 5 and the servo 2. Setting the outer support rib 54 and the inner support rib 55 can ensure the strength of the support cylinder 52, so that it will not deform when stress is applied to the support steel bars.

[0049] In this scheme, five support rods are arranged in parallel upwards, and adjacent support rods are connected by auxiliary rods 3 and diagonal tie rods 4.

[0050] In this scheme, the high-strength round steel pipes, outer sleeves 14, auxiliary rods 3, diagonal tie rods 4, and conversion joints 5 are all processed in the factory. This support must be used in conjunction with a steel or concrete retaining structure and cannot be applied directly to the soil. When implementing the support within the foundation pit, the pit is first excavated to the elevation of the support, and vertical temporary lattice columns are driven in to support the combined steel pipe support structure. The steel pipes are then hoisted to the designated position using hoisting equipment, connected by the outer sleeves 14 and pins, and interconnected by tie rods and adjustable tie rods to form an integral structure.

[0051] After the main components of the combined support structure are installed, the servo unit 2 is connected to the conversion joint 5 using high-strength bolts. Once the entire support is installed, prestress is applied via the servo unit 2. During operation, deformation is controlled via the servo unit 2 based on support deformation and internal forces. This structure is recyclable and has high rigidity, effectively resisting soil pressure on the support structure. After excavation, the support system can be quickly and effectively connected to ensure the safety of the foundation pit.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mortise type high-strength steel combined steel pipe support structure, characterized by: The support system comprises support rods and servo motors arranged at both ends of the support rods, the support rods are arranged in parallel and in multiple, auxiliary rods and inclined rods are arranged between adjacent support rods; the support rods are assembled by multiple support steel pipes, the auxiliary rods, the inclined rods and the support steel pipes form a net-shaped support system, the servo motors are assembled on the steel enclosing purlins of the foundation pit support plates, and the servo motors can exert pre-stress on the support rods connected thereto.

2. The mortise and tenon type high-strength steel composite pipe bracing structure according to claim 1, characterized in that: The support steel pipes are respectively provided with connecting pin holes at both ends, the connecting pin holes are symmetrically arranged at the ends, and reinforcing ribs are further arranged on the inner side of the support steel pipes, the reinforcing ribs are uniformly arranged in multiple along the inner annular surface of the support steel pipes, and the central angles between adjacent reinforcing ribs are the same.

3. The mortise and tenon type high-strength steel composite pipe bracing structure according to claim 2, characterized in that: An outer sleeve is arranged between adjacent support steel pipes, the outer sleeve comprises connecting ears, a body portion and a limiting ring; the body portion is in a cylindrical structure, the limiting ring is arranged at the central position in the length direction of the body portion, and the limiting ring is located inside the body portion; the connecting ears are symmetrically arranged at the outer wall position of the body portion.

4. The mortise and tenon type high-strength steel composite pipe bracing structure according to claim 3, characterized in that: The inner diameter of the body portion is matched with the outer diameter of the support steel pipe, so that the support steel pipe can be clamped into the body portion, pin holes matched with the connecting pins are arranged on the body portion, and pins are arranged in the pin holes and the connecting pin holes.

5. The mortise and tenon type high-strength steel composite pipe bracing structure according to claim 4, characterized in that: At least three connecting holes are arranged on the connecting ears; the connecting lines of the connecting holes are arranged in parallel with the central axis of the outer sleeve.

6. The mortise and tenon type high-strength steel composite pipe bracing structure according to claim 5, characterized in that: The auxiliary rod comprises a first rod body portion and first hinged ears arranged on both sides; the first hinged ears are integrally formed with the first rod body portion, hinged holes matched in size with the connecting holes are arranged on the first hinged ears; and the first hinged ears are connected with the central connecting holes on the connecting ears through pins.

7. The mortise and tenon type high-strength steel composite pipe bracing structure according to claim 6, characterized in that: The inclined rod comprises a second rod body portion and a second hinged ear; the second rod body portion is separately arranged with the second hinged ear, outer threads of a predetermined length are arranged on both sides of the second rod body portion, inner threads matched with the outer threads at the end of the second rod body portion are arranged on the second hinged ear, the second hinged ear is connected with the second rod body portion through thread cooperation; hinged holes matched in size with the connecting holes are arranged on the second hinged ear; and the second hinged ear is connected with the side connecting holes on the connecting ears through pins.

8. The mortise and tenon type high-strength steel composite pipe bracing structure according to claim 7, characterized in that: A conversion joint is connected on the outermost support steel pipe, the conversion joint comprises a flange base and a support cylinder, the support cylinder is arranged at the central position of the flange base, pin holes matched with the support steel pipe are arranged on the support cylinder, and the conversion joint is connected with the support steel pipe through the pin holes.

9. The mortise and tenon type high-strength steel composite pipe bracing structure according to claim 8, characterized in that: Flange holes are arranged at the circumferential position of the outer ring of the flange base, support outer ribs are arranged between adjacent flange holes, the support outer ribs are uniformly arranged in multiple along the outer wall of the support cylinder, multiple support inner ribs are arranged at the inner side end of the support cylinder, and the support inner ribs are uniformly arranged along the inner side of the support cylinder.

10. The mortise and tenon type high-strength steel composite pipe bracing structure according to claim 9, characterized in that: The support rods are arranged in parallel in five, and adjacent support rods are connected through auxiliary rods and inclined rods.

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