Sleeve type joint pipe device of inclined strut pile in foundation pit

Abstract

The invention relates to the technical field of piles for foundation pit foundations, in particular to a sleeve type joint pipe device for inclined strut piles in a foundation pit, which is applied to connection of an upper steel pipe column and a lower steel pipe column and comprises an inner sleeve part and an outer tightening component, and the inner sleeve part coaxially sleeves the joint of the upper steel pipe column and the lower steel pipe column. The inner sleeve piece is provided with strip-shaped protrusions and annular protrusions which can abut against the outer circumferential faces of the upper steel pipe column and the lower steel pipe column when deforming inwards, the strip-shaped protrusions extend in the axis direction of the upper steel pipe column and the lower steel pipe column, the annular protrusions are coaxial with the upper steel pipe column and the lower steel pipe column, and the outer tightening assembly is arranged on the outer side of the inner sleeve piece. The strip-shaped protrusions and the annular protrusions in the inner sleeve part abut against and lock the outer circumferential faces of the upper steel pipe column and the lower steel pipe column, the problem that an existing joint pipe device cannot stably connect the upper steel pipe column and the lower steel pipe column is solved, meanwhile, after construction is completed, the outer tightening assembly and the inner sleeve part can be detached, and the construction efficiency is improved. And the construction efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of piles for foundation pits, and in particular to a sleeve type joint pipe device for diagonal bracing piles in a foundation pit. Background Art

[0002] With the development of national economic construction, the construction of underground space has become more and more frequent, and the construction technology of foundation pit support system, which is used to support, reinforce and protect underground space, has also made great progress. In recent years, in order to avoid exceeding the red line of construction projects, relevant policies have prohibited the use of soil anchor support for deep foundation pits in soft soil; and the cost of the support structure using retaining piles plus horizontal inward support is relatively high; therefore, the combined support form of retaining piles, top beams and inclined support piles in the foundation pit has been increasingly widely used.

[0003] The inclined bracing piles in the foundation pit are generally composed of combined inclined piles extending under the foundation pit floor and steel pipe inclined braces located above the foundation pit floor; the upper end of the steel pipe inclined brace is against the top beam through a jack preloading device, and the lower end of the steel pipe inclined brace is supported on the upper end of the combined inclined piles; the combined inclined piles are generally composed of a precast concrete square pile in the center and a cement soil pile wrapped on the outside.

[0004] During the construction of the diagonal bracing piles in the foundation pit using an integrated pile driver, the piles are often super low in elevation due to the soft soil foundation at the bottom of the piles; if the top of the diagonal bracing piles is set super high, it is easy to be collided with the crown beam or the pressure beam when the foundation trench is excavated, resulting in tilting and fracture. Therefore, a butt joint pipe connection is required between the super low top of the diagonal bracing pile and the jack preloading device, and the joint pipe is a sleeve joint pipe device.

[0005] The sleeve-type joint pipe device of the prior art is only welded at the lower end of the joint pipe and the upper end of the inserted steel pipe diagonal brace, and its welding area is mainly the overhead welding area, while the upper end of the steel pipe diagonal brace and the upper section of the sleeve-type joint pipe are only butted against the pipe wall. The sleeve-type joint pipe device of the prior art is prone to eccentricity when the upper end of the steel pipe diagonal brace is plugged into the joint pipe, and the overhead welding makes the welding strength and mechanical properties lacking. During the jack preloading process and the water and soil side pressure of the foundation pit excavation, it is easy to produce yield phenomenon at the joint, which is commonly known as compression or flattening phenomenon or arch-type bending and instability. That is, the above prior art sleeve-type joint pipe device cannot guarantee the overall stable axial bearing capacity of the diagonal brace piles in the foundation pit, and cannot safely transmit the axial pressure transmitted by the foundation pit retaining piles through the crown beam or the top beam.

[0006] Chinese patent publication number CN220225355U discloses a sleeve-type joint pipe device for diagonal bracing piles in a foundation pit, comprising an upper section steel pipe and a lower section steel pipe which are smaller at the top and larger at the bottom and fit each other at the interface, the outer periphery of the connection between the upper section steel pipe and the lower section steel pipe is welded, the lower end of the lower section steel pipe is welded to the upper end of the inserted steel pipe diagonal brace, a transverse steel pad is fixed to the top end of the upper section steel pipe, the upper end face of the steel pipe diagonal brace is pressed against the bottom plane of the transverse steel pad; the lower section steel pipe is provided with a plurality of welding holes along the circumference, and the annular edge of each welding hole is welded to the upper end of the steel pipe diagonal brace; the welding holes are rectangular welding holes whose height is greater than the width; and the plurality of rectangular welding holes are located in the middle of the height of the lower section steel pipe.

[0007] The sleeve-type joint pipe device connects the upper end of the steel pipe diagonal brace with the sleeve-type joint pipe, and welds the sleeve-type joint pipe to the steel pipe diagonal brace, which is not convenient for later dismantling. In actual projects, due to factors such as installation errors, uneven distribution of external loads, and uneven settlement of the foundation, the steel pipe diagonal brace will not only be subjected to forces along the axial direction, but may also be subjected to a certain degree of torsion. The sleeve-type joint pipe in this patent is only connected to the steel pipe diagonal brace by welding. When subjected to a large value of torsion, the joint pipe will be disconnected from the steel pipe diagonal brace, thereby causing the risk of an unstable connection. Summary of the invention

[0008] In view of the above problems, a sleeve type joint pipe device for inclined bracing piles in a foundation pit is provided, by sleeve-mounting an inner sleeve member on the connecting ends of the upper steel pipe column and the lower steel pipe column, and arranging an outer tightening assembly on the outer side of the inner sleeve member. When the outer tightening assembly tightens the inner sleeve member, the inner sleeve member can be squeezed and deformed inwardly, so that the strip protrusions and annular protrusions in the inner sleeve member abut against and lock the outer circumferential surfaces of the upper steel pipe column and the lower steel pipe column. While the annular protrusions can axially lock the upper steel pipe column and the lower steel pipe column, the strip protrusions can effectively prevent the upper steel pipe column and the lower steel pipe column from rotating relative to each other, thereby solving the problem that the existing joint pipe device cannot stably connect the upper steel pipe column and the lower steel pipe column.

[0009] In order to solve the problems of the prior art, the present invention provides a sleeve-type joint pipe device for diagonal bracing piles in a foundation pit, which is used to connect an upper steel pipe column and a lower steel pipe column. The joint pipe device includes an inner sleeve member and an outer tightening assembly. The inner sleeve member is coaxially sleeved at the connection between the upper steel pipe column and the lower steel pipe column. The inner sleeve member has a strip protrusion and an annular protrusion that can abut against the outer circumferential surface of the upper steel pipe column and the lower steel pipe column when it is deformed inwardly. The strip protrusion extends along the axial direction of the upper steel pipe column and the lower steel pipe column, and the annular protrusion is coaxial with the upper steel pipe column and the lower steel pipe column. The outer tightening assembly is arranged on the outside of the inner sleeve member, and the outer tightening assembly is used to apply a force to the inner sleeve member to deform inwardly.

[0010] Preferably, the outer tightening assembly has arcuate surfaces that can be distributed along the circumference of the inner sleeve member, and the closed diameter of the arcuate surfaces is smaller than the diameter of the inner sleeve member in an undeformed state.

[0011] Preferably, the outer tightening assembly has two arc-shaped embracing tubes and an embracing tube connector, the inner side surfaces of the two arc-shaped embracing tubes form an arc-shaped surface for extruding the inner sleeve member, and the embracing tube connector is used to connect the two arc-shaped embracing tubes and make the two arc-shaped embracing tubes converge against each other to extrude the inner sleeve member.

[0012] Preferably, the clamping tube connector comprises clamping hoops arranged along the length direction of the arc-shaped clamping tube, and the clamping hoops are sleeved on the outside of the two arc-shaped clamping tubes at equal intervals.

[0013] Preferably, connecting side ears extending along the length direction of the arc-shaped clamping tube are provided on both sides thereof, and the clamping tube connector comprises bolts and nuts, and the connecting side ears corresponding to the two arc-shaped clamping tubes are connected by bolts and nuts.

[0014] Preferably, bell-mouth sections are provided at both ends of the inner sleeve member, and deformation openings are provided on the bell-mouth sections along their circumference. When the outer side surface of the bell-mouth section is subjected to a force in its radial direction, the bell-mouth section deflects and deforms with its connection with the inner sleeve member as a fulcrum.

[0015] Preferably, the inner side surface of the bell-mouth section is distributed with coaxial annular ribs therewith, and after the bell-mouth section is deflected and deformed toward the outer sides of the upper steel pipe column and the lower steel pipe column, the annular ribs abut against the outer circumferential surfaces of the upper steel pipe column and the lower steel pipe column to form an annular protrusion.

[0016] Preferably, the outer circumferential surface of the inner sleeve member is distributed with strip ribs distributed along its circumference, the strip ribs extend along the axial direction of the inner sleeve member, and the connection between the strip ribs and the inner sleeve member forms a deformation zone that can deform inwardly, and the external tightening assembly abuts against the strip ribs to cause the deformation zone to deform inwardly to form a strip-shaped protrusion.

[0017] Preferably, the inner diameter of the inner sleeve member is larger than the outer diameters of the upper steel pipe column and the lower steel pipe column.

[0018] Preferably, a positioning ring fixedly connected to the inner sleeve is provided at the center position inside the inner sleeve, the inner diameter of the positioning ring is smaller than the inner diameters of the upper steel pipe column and the lower steel pipe column, and the connecting ends of the upper steel pipe column and the lower steel pipe column are respectively abutted against the two ends of the positioning ring.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present application arranges an inner sleeve member on the connecting end of the upper steel pipe column and the lower steel pipe column, and arranges an outer tightening assembly on the outside of the inner sleeve member. When the outer tightening assembly tightens the inner sleeve member, the inner sleeve member can be squeezed and deformed inwardly, so that the strip protrusions and the annular protrusions in the inner sleeve member abut against and lock the outer circumferential surfaces of the upper steel pipe column and the lower steel pipe column. While the annular protrusions can axially lock the upper steel pipe column and the lower steel pipe column, the strip protrusions can effectively prevent the upper steel pipe column and the lower steel pipe column from rotating relative to each other, thereby solving the problem that the existing joint pipe device cannot stably connect the upper steel pipe column and the lower steel pipe column. At the same time, after the construction is completed, the outer tightening assembly and the inner sleeve member can be disassembled, thereby improving the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of foundation pit inclined support pile construction.

[0022] Figure 2 The present invention is a schematic diagram of a first embodiment of an external tightening assembly in a sleeve-type joint pipe device for a diagonal support pile in a foundation pit.

[0023] Figure 3 The present invention is a cross-sectional view of a sleeve-type joint pipe device for diagonal bracing piles in a foundation pit.

[0024] Figure 4 yes Figure 3 A partial enlarged view of point A.

[0025] Figure 5 The present invention is a schematic diagram of the tightening and deformation of an inner sleeve member in a sleeve-type joint pipe device of a diagonal support pile in a foundation pit.

[0026] Figure 6 The present invention is a schematic diagram of an inner sleeve member in an initial state in a sleeve-type joint pipe device for a diagonal support pile in a foundation pit.

[0027] Figure 7 The present invention is a three-dimensional exploded view of a sleeve-type joint pipe device for diagonal bracing piles in a foundation pit.

[0028] Figure 8 The present invention is a schematic diagram of an inner sleeve member in a sleeve-type joint pipe device for a diagonal support pile in a foundation pit before being tightened by an outer tightening component.

[0029] Fig. 9 The present invention is a schematic diagram of an inner sleeve member in a sleeve-type joint pipe device for a diagonal support pile in a foundation pit after being tightened by an outer tightening component.

[0030] Fig.10 The present invention is a schematic diagram of a second embodiment of an external tightening assembly in a sleeve-type joint pipe device for a diagonal support pile in a foundation pit.

[0031] The numbers in the figure are: 11, upper steel pipe column; 12, lower steel pipe column; 2, inner sleeve member; 23, bell mouth section; 231, deformation opening; 232, annular ribs; 24, strip ribs; 25, deformation zone; 26, positioning ring; 3, external tightening assembly; 31, arc-shaped clamping tube; 311, connecting side ears; 32, clamping tube connector; 321, clamping hoop; 322, bolts and nuts. DETAILED DESCRIPTION

[0032] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] like Figure 1 , Figure 2 and Figure 5 As shown, this application provides:

[0034] A sleeve-type joint pipe device for inclined bracing piles in a foundation pit is used to connect an upper steel pipe column 11 and a lower steel pipe column 12. The joint pipe device includes an inner sleeve member 2 and an outer tightening assembly 3. The inner sleeve member 2 is coaxially sleeved at the connection between the upper steel pipe column 11 and the lower steel pipe column 12. The inner sleeve member 2 has strip protrusions and annular protrusions that can abut against the outer circumferential surfaces of the upper steel pipe column 11 and the lower steel pipe column 12 when it is deformed inwardly. The strip protrusions extend along the axial direction of the upper steel pipe column 11 and the lower steel pipe column 12, and the annular protrusions are coaxial with the upper steel pipe column 11 and the lower steel pipe column 12. The outer tightening assembly 3 is arranged on the outside of the inner sleeve member 2, and the outer tightening assembly 3 is used to apply a force to the inner sleeve member 2 to deform it inwardly.

[0035] During operation, the inner sleeve member 2 is sleeved on the connecting ends of the upper steel pipe column 11 and the lower steel pipe column 12, so that the inner sleeve member 2 can wrap the connecting parts of the two. Then, an outer tightening component 3 is arranged on the outer side of the inner sleeve member 2. The function of this component is to deform the inner sleeve member 2 by tightening.

[0036] When the outer tightening assembly 3 begins to tighten, the inner sleeve 2 will be squeezed and its internal structure will be deformed accordingly. This deformation is targeted, which enables the strip protrusions and annular protrusions in the inner sleeve 2 to more closely abut against the outer circumferential surfaces of the upper steel pipe column 11 and the lower steel pipe column 12. Such a design not only increases the tightness of the connection, but also greatly improves the stability of the connection.

[0037] The design of the annular protrusion can lock the upper steel pipe column 11 and the lower steel pipe column 12 in the axial direction to prevent them from being displaced in the vertical direction. The strip protrusion can effectively prevent the upper steel pipe column 11 and the lower steel pipe column 12 from rotating relative to each other. Such a double locking mechanism makes the entire connection structure more stable and less susceptible to external factors.

[0038] In addition, this embodiment has high construction efficiency. After the construction is completed, the outer tightening component 3 and the inner sleeve member 2 can be easily disassembled, so that the subsequent construction work will not be affected. Such a design not only simplifies the construction process, but also improves the construction efficiency and reduces the construction cost.

[0039] In summary, this embodiment solves the problems existing in the existing joint pipe device when connecting the upper steel pipe column 11 and the lower steel pipe column 12, improves the stability of the connection and the construction efficiency, and provides a new solution for engineering practice in related fields.

[0040] When subjected to force, the strip-shaped protrusions and the annular protrusions form a line contact with the upper steel pipe column 11 and the lower steel pipe column 12. This contact mode enables concentrated transmission of force, thereby achieving effective extrusion of the steel pipe column. When the strip-shaped protrusions and the annular protrusions are subjected to external force, they will fit tightly on the outer circumference of the upper steel pipe column 11 and the lower steel pipe column 12, and deform the outer circumference of the upper steel pipe column 11 and the lower steel pipe column 12 through extrusion.

[0041] During the extrusion process, the strip-shaped protrusions and the annular protrusions will apply uniform pressure to the outer circumferential surfaces of the upper steel pipe column 11 and the lower steel pipe column 12 along their length or circumferential direction. This pressure effect causes linear grooves corresponding to the shapes of the strip-shaped protrusions and the annular protrusions to be pressed out on the outer circumferential surfaces of the steel pipe columns. These linear grooves not only enhance the friction between the protrusions and the steel pipe column, but also make the connection between the protrusions and the steel pipe column tighter and more stable.

[0042] Through this locking mechanism, the strip-shaped protrusions and the annular protrusions effectively connect the upper steel pipe column 11 and the lower steel pipe column 12 together, forming a stable and reliable connection structure. This connection structure can not only withstand large tension and pressure, but also resist erosion and damage from the external environment, thereby ensuring the stability and safety of the entire structure.

[0043] In summary, the strip-shaped protrusions and the annular protrusions form linear grooves and achieve locking with the steel pipe columns by squeezing the outer circumferential surfaces of the upper steel pipe column 11 and the lower steel pipe column 12. This design not only improves the stability and reliability of the connection, but also enhances the bearing capacity of the entire structure, bringing significant improvements and enhancements to engineering practices in related fields.

[0044] In this embodiment, the inner sleeve member 2 is sleeved on the connecting end of the upper steel pipe column 11 and the lower steel pipe column 12, and the outer tightening component 3 is arranged on the outside of the inner sleeve member 2. When the outer tightening component 3 tightens the inner sleeve member 2, the inner sleeve member 2 can be squeezed and deformed inward, so that the strip protrusions and the annular protrusions in the inner sleeve member 2 abut and lock the outer circumferential surfaces of the upper steel pipe column 11 and the lower steel pipe column 12. While the annular protrusions can axially lock the upper steel pipe column 11 and the lower steel pipe column 12, the strip protrusions can effectively prevent the upper steel pipe column 11 and the lower steel pipe column 12 from rotating relative to each other, thereby solving the problem that the existing joint pipe device cannot stably connect the upper steel pipe column 11 and the lower steel pipe column 12. At the same time, after the construction is completed, the outer tightening component 3 and the inner sleeve member 2 can be disassembled, so as to improve the construction efficiency.

[0045] like Figure 8 and Fig. 9 As shown, the outer tightening component 3 has an arcuate surface that can be distributed along the circumference of the inner sleeve member 2, and the closed diameter of the arcuate surface is smaller than the diameter of the inner sleeve member 2 in the undeformed state.

[0046] The outer tightening assembly 3 has an arc surface that can be distributed along the circumference of the inner sleeve 2. In the process of tightening the inner sleeve 2, the outer tightening assembly 3 can apply pressure to the inner sleeve 2 more evenly, thereby ensuring that the inner sleeve 2 can be deformed evenly and effectively.

[0047] The closed diameter of the arcuate surface is smaller than the diameter of the inner sleeve 2 in the undeformed state. When the outer tightening assembly 3 is tightened, the arcuate surface can be smoothly closed and closely attached to the outer side of the inner sleeve 2, thereby deforming the inner sleeve 2 through extrusion. Since the closed diameter is smaller than the diameter of the inner sleeve 2 in the undeformed state, it can be ensured that the inner sleeve 2 can be fully deformed when being extruded, thereby achieving the expected locking effect.

[0048] In practical applications, the external tightening assembly 3 of this design can greatly improve the connection stability and reliability of the joint pipe device. By effectively squeezing the inner sleeve 2, the strip-shaped protrusions and the annular protrusions therein are closely abutted against and locked against the outer circumferential surfaces of the upper steel pipe column 11 and the lower steel pipe column 12, thereby effectively preventing the relative movement and rotation between the two.

[0049] like Figure 5 and Figure 6 As shown, the outer tightening assembly 3 has two arc-shaped clamping tubes 31 and a clamping tube connector 32. The inner side surfaces of the two arc-shaped clamping tubes 31 form an arc-shaped surface for extruding the inner sleeve member 2. The clamping tube connector 32 is used to connect the two arc-shaped clamping tubes 31 and make the two arc-shaped clamping tubes 31 converge with each other to extrude the inner sleeve member 2.

[0050] The outer tightening assembly 3 in this embodiment mainly includes two arc-shaped embracing tubes 31 and an embracing tube connector 32. The inner side surfaces of the two arc-shaped embracing tubes 31 can form an arc-shaped surface for extruding the inner sleeve member 2. The shape and size of the arc-shaped surface are determined according to the structure and deformation requirements of the inner sleeve member 2 to ensure that the inner sleeve member 2 can be effectively deformed during the extrusion process.

[0051] The clamping tube connector 32 is responsible for connecting the two arc-shaped clamping tubes 31 and ensuring that they can work stably. Through the precise control of the clamping tube connector 32, the two arc-shaped clamping tubes 31 can be retracted to each other, thereby squeezing the inner sleeve 2. This design not only ensures the uniformity and effectiveness of squeezing, but also makes the operation of the outer tightening component 3 more convenient and flexible.

[0052] In actual application, the construction personnel can control the degree of retraction of the two arc-shaped clasping tubes 31 simply by operating the clasping tube connector 32. As the arc-shaped clasping tube 31 gradually retracts, the arc-shaped surface of its inner side surface will fit tightly against the outer side of the inner sleeve member 2, and the inner sleeve member 2 will be deformed by the extrusion effect. This deformation will make the strip-shaped protrusions and the annular protrusions in the inner sleeve member 2 more closely abut against the outer circumferential surfaces of the upper steel pipe column 11 and the lower steel pipe column 12, thereby achieving a stable connection.

[0053] In addition, the design of the outer tightening assembly 3 also fully considers the construction efficiency and convenience. After the construction is completed, the outer tightening assembly 3 can be easily removed from the inner sleeve member 2 for subsequent maintenance and replacement. This design not only improves the construction efficiency, but also reduces the construction cost, making the connection process of the entire joint pipe device more efficient and economical.

[0054] like Fig.10 As shown, the clamp connector 32 includes clamp hoops 321 arranged along the length direction of the arc-shaped clamp 31, and the clamp hoops 321 are sleeved on the outside of the two arc-shaped clamps 31 at equal intervals.

[0055] The tube connector 32 is mainly composed of hoops 321 arranged along the length direction of the arc-shaped tube 31. These hoops 321 are sleeved on the outside of the two arc-shaped tubes 31 at equal intervals to form a stable and adjustable connection structure.

[0056] The clamp 321 can effectively connect and fix the two arc-shaped clamps 31. The equal spacing not only ensures the uniformity of the distribution of the clamp 321, but also enables the entire clamp connector 32 to evenly share the pressure when subjected to force, thereby improving the stability and reliability of the connection.

[0057] When the outer tightening assembly 3 needs to be tightened, the two arc-shaped clamps 31 can be brought together by adjusting the tightness of the clamp 321, thereby squeezing the inner sleeve 2. This design makes the operation of the outer tightening assembly 3 more flexible and convenient, and the tightening degree can be adjusted at any time according to actual needs.

[0058] In addition, the equidistant arrangement of the clamps 321 also enhances the overall structural strength of the outer tightening assembly 3. When subjected to external forces, the clamps 321 can work together to resist the external forces and prevent the outer tightening assembly 3 from being deformed or damaged.

[0059] In summary, the clamping tube connector 32 provides a stable and reliable connection structure for the external tightening assembly 3 through its clamping hoop 321 design and the equidistant sleeve arrangement, so that the entire external tightening assembly 3 can maintain good performance and stability during use. This design not only improves work efficiency, but also reduces maintenance costs, bringing significant improvements and enhancements to engineering practices in related fields.

[0060] like Figure 7 As shown, connecting side ears 311 extending along the length direction are arranged on both sides of the arc-shaped clamping tube 31, and the clamping tube connector 32 includes bolts and nuts 322, and the connecting side ears 311 corresponding to the two arc-shaped clamping tubes 31 are connected by bolts and nuts 322.

[0061] Connecting side ears 311 are provided on both sides of each arc-shaped embracing tube 31 . The connecting side ears 311 extend along the length direction of the arc-shaped embracing tube 31 , which not only increases the stability of the structure but also provides convenience for subsequent connection operations.

[0062] The sleeve connector 32 is composed of a bolt and a nut, and the bolt passes through the connecting side ears 311 corresponding to the two arc-shaped sleeves 31, and then is tightened with the nut to achieve a tight connection between the two arc-shaped sleeves 31. This connection method is simple and effective, and can ensure that when the inner sleeve part 2 is squeezed, the two arc-shaped sleeves 31 can keep synchronously contracted, thereby achieving uniform squeezing of the inner sleeve part 2.

[0063] In actual application, the construction personnel only need to pass the bolts through the connecting side ears 311 of the two arc-shaped clamping tubes 31 and then tighten the nuts to easily complete the assembly of the external tightening assembly 3. As the nuts are gradually tightened, the two arc-shaped clamping tubes 31 will be retracted, and the arc-shaped surfaces of the inner sides will fit tightly against the outer side of the inner sleeve 2, causing the inner sleeve 2 to deform through the extrusion effect. This deformation not only enhances the friction between the inner sleeve 2 and the steel pipe column, but also makes the connection between them tighter and more stable.

[0064] In addition, the design of the outer tightening assembly 3 is highly flexible and adjustable. By adjusting the tightness of the bolts and nuts, the degree of closing of the two arc-shaped clamps 31 can be conveniently controlled, thereby achieving precise control of the extrusion force of the inner sleeve 2. This feature enables the outer tightening assembly 3 to adapt to inner sleeves 2 of different specifications and sizes, thereby improving its versatility and practicality.

[0065] like Figure 4 , Figure 6 and Figure 7 As shown, bell-mouth sections 23 are provided at both ends of the inner sleeve member 2, and deformation openings 231 are provided on the bell-mouth section 23 along its circumference. When the outer side surface of the bell-mouth section 23 is subjected to a force in its radial direction, the bell-mouth section 23 deflects and deforms with its connection with the inner sleeve member 2 as a fulcrum.

[0066] The bell-mouth sections 23 are arranged at both ends of the inner sleeve 2, which not only enhances the structural strength of the inner sleeve 2, but also facilitates the subsequent deformation operation. The bell-mouth section 23 has a plurality of deformation openings 231 evenly distributed along its circumference, and the existence of these deformation openings 231 enables the bell-mouth section 23 to deform more easily when subjected to external force.

[0067] When the outer side surface of the bell mouth section 23 is subjected to a force in the radial direction, its structure enables it to deflect and deform with the connection with the inner sleeve member 2 as a fulcrum. This deformation process is orderly and controllable, and the existence of the deformation opening 231 enables the bell mouth section 23 to deflect and deform along a preset direction without disorderly twisting or damage.

[0068] This design allows the inner sleeve 2 to absorb and disperse the extrusion force through the deformation of the bell mouth section 23 when it is squeezed by external force, thereby protecting the overall structure of the inner sleeve 2 from damage. At the same time, the deformation of the bell mouth section 23 can also enhance the tightness of the connection between the inner sleeve 2 and the external component, thereby improving the stability and reliability of the entire joint.

[0069] like Figure 4 , Figure 5 and Figure 7 As shown, the inner side surface of the bell-mouth section 23 is distributed with an annular rib 232 coaxial therewith. After the bell-mouth section 23 is deflected and deformed toward the outer side of the upper steel pipe column 11 and the lower steel pipe column 12, the annular rib 232 abuts against the outer circumferential surface of the upper steel pipe column 11 and the lower steel pipe column 12 to form an annular protrusion.

[0070] The bell-mouth sections 23 at both ends of the inner sleeve 2 are provided with coaxial annular ribs 232. These annular ribs 232 not only enhance the structural strength of the bell-mouth sections 23, but also play an important role in the deformation of the bell-mouth sections 23. When the bell-mouth sections 23 are subjected to external forces and deflect and deform toward the outer sides of the upper steel pipe column 11 and the lower steel pipe column 12, the annular ribs 232 will deform accordingly and closely abut against the outer circumferential surfaces of the upper steel pipe column 11 and the lower steel pipe column 12.

[0071] As the bell mouth section 23 deforms, the annular ribs 232 gradually form obvious annular protrusions on the outer circumferential surfaces of the upper steel pipe column 11 and the lower steel pipe column 12. These annular protrusions not only increase the contact area between the inner sleeve member 2 and the upper steel pipe column 11 and the lower steel pipe column 12, but also effectively enhance the connection tightness and stability between the two through their shape and distribution.

[0072] The formation of the annular protrusion not only depends on the synergistic effect of the bell mouth section 23 and the annular rib 232, but also is subject to the precise control of the magnitude and direction of the external force. By precisely adjusting the application method and strength of the external force, it can be ensured that the annular protrusion forms a uniform and stable distribution on the outer circumference of the steel pipe column, thereby further improving the reliability and stability of the connection.

[0073] like Figure 5 and Figure 6 As shown, the outer circumferential surface of the inner sleeve member 2 is distributed with strip ribs 24 distributed along its circumference, and the strip ribs 24 extend along the axial direction of the inner sleeve member 2. The connection between the strip ribs 24 and the inner sleeve member 2 forms a deformation zone 25 that can deform inwardly. The outer tightening component 3 abuts against the strip ribs 24 to cause the deformation zone 25 to deform inwardly to form a strip-shaped protrusion.

[0074] A series of strip ribs 24 are distributed on the outer circumferential surface of the inner sleeve member 2. These strip ribs 24 not only enhance the overall structural strength of the inner sleeve member 2, but also provide a clear guide for its deformation when subjected to external forces. The strip ribs 24 are evenly distributed along the circumference of the inner sleeve member 2, ensuring that the inner sleeve member 2 is subjected to balanced forces in all directions. At the same time, the strip ribs 24 extend along the axial direction of the inner sleeve member 2, so that the inner sleeve member 2 can also maintain stable structural performance in the length direction.

[0075] A deformation zone 25 capable of inward deformation is provided at the connection between the strip rib 24 and the inner sleeve 2. The existence of these deformation zones 25 enables the inner sleeve 2 to deform inward in an orderly manner when subjected to the extrusion of the outer tightening assembly 3, without disorderly twisting or damage. This design not only improves the deformation capacity of the inner sleeve 2, but also enhances its stability and reliability under the action of external forces.

[0076] When the outer tightening assembly 3 abuts against the strip ribs 24, the deformation zone 25 is deformed inward by applying appropriate extrusion force. As the deformation proceeds, the strip ribs 24 gradually form obvious strip-shaped protrusions on the outer circumferential surface of the inner sleeve member 2. These strip-shaped protrusions not only further enhance the structural strength of the inner sleeve member 2, but also increase the friction between the inner sleeve member 2 and the outer connecting member through their special shape and distribution, thereby improving the stability and safety of the entire joint.

[0077] The design and use of the outer tightening assembly 3 enables the inner sleeve 2 to achieve orderly deformation and bulging under the action of external force. This deformation and bulging process is not only controllable and predictable, but also ensures that the inner sleeve 2 can maintain stable structural performance and connection performance after deformation.

[0078] like Figure 3 , Figure 8 and Fig. 9 As shown, the inner diameter of the inner sleeve member 2 is larger than the outer diameters of the upper steel pipe column 11 and the lower steel pipe column 12 .

[0079] The inner diameter of the inner sleeve member 2 is designed to be larger than the outer diameters of the upper steel pipe column 11 and the lower steel pipe column 12. This design not only ensures that the inner sleeve member 2 can be easily sleeved on the steel pipe column, but also provides sufficient space for subsequent assembly and connection operations.

[0080] In practical applications, the inner diameter of the inner sleeve 2 is slightly larger than the outer diameter of the steel pipe column, so that there is a certain gap between the two. The existence of this gap allows the steel pipe column to be fine-tuned inside the inner sleeve 2 to ensure the accuracy of the connection position, and can also avoid over-tightening or over-loosening caused by assembly errors.

[0081] In addition, the thermal expansion and contraction effect of the material is taken into consideration. Since steel will expand and contract to a certain extent when the temperature changes, the appropriate gap between the inner sleeve 2 and the steel pipe column can ensure that the connection between the two will not be affected by being too tight or too loose when the temperature changes.

[0082] At the same time, the inner diameter design of the inner sleeve 2 also takes into account its own deformation ability. When subjected to external force, the inner sleeve 2 can absorb and disperse the external force through the elastic deformation of its material, thereby protecting the internal steel pipe column from damage. This design not only improves the stability and reliability of the entire structure, but also extends its service life.

[0083] like Figure 3 As shown, a positioning ring 26 fixedly connected to the inner sleeve member 2 is provided at the center position thereof, the inner diameter of the positioning ring 26 is smaller than the inner diameters of the upper steel pipe column 11 and the lower steel pipe column 12 , and the connecting ends of the upper steel pipe column 11 and the lower steel pipe column 12 are respectively abutted against the two ends of the positioning ring 26 .

[0084] The inner diameter of the positioning ring 26 is designed to be smaller than the inner diameters of the upper steel pipe column 11 and the lower steel pipe column 12, so that the positioning ring 26 can fit tightly on the connecting end of the steel pipe column, effectively preventing the steel pipe column from shifting or deflecting during the connection process. At the same time, the two ends of the positioning ring 26 are tightly abutted against the connecting ends of the upper steel pipe column 11 and the lower steel pipe column 12, respectively. This abutment method not only ensures the tightness of the connection, but also enhances the stability and bearing capacity of the connection between the upper steel pipe column 11 and the lower steel pipe column 12 through the supporting effect of the positioning ring 26.

[0085] The presence of the positioning ring 26 also enhances the overall structural strength of the inner sleeve member 2. Similar to a solid support point, it provides additional support and stability for the inner sleeve member 2. This design not only improves the bearing capacity of the entire structure, but also makes the inner sleeve member 2 more stable and safe when subjected to external forces.

[0086] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A sleeve-type joint pipe device for diagonal bracing piles in a foundation pit, used to connect an upper steel pipe column (11) and a lower steel pipe column (12), characterized in that: The joint pipe device comprises an inner sleeve member (2) and an outer tightening assembly (3). The inner sleeve member (2) is coaxially sleeved at the connection between the upper steel pipe column (11) and the lower steel pipe column (12). The inner sleeve member (2) has a strip-shaped protrusion and an annular protrusion which can abut against the outer circumferential surface of the upper steel pipe column (11) and the lower steel pipe column (12) when deformed inwardly. The strip-shaped protrusion extends along the axial direction of the upper steel pipe column (11) and the lower steel pipe column (12). The annular protrusion is coaxial with the upper steel pipe column (11) and the lower steel pipe column (12). The outer tightening assembly (3) is arranged on the outer side of the inner sleeve member (2). The outer tightening assembly (3) is used to apply a force to the inner sleeve member (2) to deform inwardly.

2. A sleeve type joint pipe device for diagonal bracing piles in a foundation pit according to claim 1, characterized in that: The outer tightening component (3) has an arcuate surface that can be distributed along the circumference of the inner sleeve member (2), and the closed diameter of the arcuate surface is smaller than the diameter of the inner sleeve member (2) in an undeformed state.

3. A sleeve type joint pipe device for diagonal bracing piles in a foundation pit according to claim 2, characterized in that: The outer tightening assembly (3) comprises two arc-shaped embracing tubes (31) and an embracing tube connector (32). The inner side surfaces of the two arc-shaped embracing tubes (31) form an arc-shaped surface for extruding the inner sleeve member (2). The embracing tube connector (32) is used to connect the two arc-shaped embracing tubes (31) and make the two arc-shaped embracing tubes (31) converge to each other so as to extrude the inner sleeve member (2).

4. A sleeve type joint pipe device for diagonal bracing piles in a foundation pit according to claim 3, characterized in that: The tube connector (32) comprises hoops (321) arranged along the length direction of the arc-shaped tubes (31), and the hoops (321) are sleeved on the outsides of the two arc-shaped tubes (31) at equal intervals.

5. A sleeve type joint pipe device for diagonal bracing piles in a foundation pit according to claim 3, characterized in that: The arc-shaped holding tube (31) is provided with connecting side ears (311) extending along the length direction thereof on both sides. The holding tube connector (32) comprises bolts and nuts (322). The connecting side ears (311) corresponding to the two arc-shaped holding tubes (31) are connected via the bolts and nuts (322).

6. A sleeve type joint pipe device for diagonal bracing piles in a foundation pit according to any one of claims 1 to 5, characterized in that: Bell mouth sections (23) are arranged at both ends of the inner sleeve member (2), and deformation openings (231) are arranged on the bell mouth section (23) distributed along its circumference. When the outer side surface of the bell mouth section (23) is subjected to a force in its radial direction, the bell mouth section (23) deflects and deforms with its connection with the inner sleeve member (2) as a fulcrum.

7. A sleeve type joint pipe device for diagonal bracing piles in a foundation pit according to claim 6, characterized in that: The inner side surface of the bell-mouth section (23) is provided with an annular rib (232) coaxial therewith. After the bell-mouth section (23) is deflected and deformed toward the outer sides of the upper steel pipe column (11) and the lower steel pipe column (12), the annular rib (232) abuts against the outer circumferential surfaces of the upper steel pipe column (11) and the lower steel pipe column (12) to form an annular protrusion.

8. A sleeve type joint pipe device for diagonal bracing piles in a foundation pit according to claim 6, characterized in that: The outer circumferential surface of the inner sleeve member (2) is provided with strip ribs (24) distributed along the circumference thereof. The strip ribs (24) extend along the axial direction of the inner sleeve member (2). A deformation zone (25) capable of deforming inward is formed at the connection between the strip ribs (24) and the inner sleeve member (2). The outer tightening assembly (3) abuts against the strip ribs (24) to deform the deformation zone (25) inward to form a strip-shaped protrusion.

9. A sleeve type joint pipe device for diagonal bracing piles in a foundation pit according to claim 8, characterized in that: The inner diameter of the inner sleeve member (2) is greater than the outer diameters of the upper steel pipe column (11) and the lower steel pipe column (12).

10. A sleeve type joint pipe device for diagonal bracing piles in a foundation pit according to claim 9, characterized in that: A positioning ring (26) fixedly connected to the inner sleeve member (2) is arranged at a central position inside the inner sleeve member (2). The inner diameter of the positioning ring (26) is smaller than the inner diameters of the upper steel pipe column (11) and the lower steel pipe column (12). The connecting ends of the upper steel pipe column (11) and the lower steel pipe column (12) are respectively abutted against the two ends of the positioning ring (26).

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