A prefabricated steel shell concrete annular tunnel pipe segment structure

Abstract

The present invention relates to the field of tunnel pipe segments, and in particular to a prefabricated steel shell concrete annular tunnel pipe segment structure, comprising: a pipe segment assembly, including an inner shell, an outer shell sleeved outside the inner shell, stiffening ribs fixed between the inner shell and the outer shell, connecting rings and sleeves fixed at both ends of the outer shell, and an interface ring fixed at one end of the inner shell; and a connecting assembly, including a top rib fixed on the inner wall of the connecting ring and a bottom rib fixed on the outer wall of the interface ring, the bottom of the top rib is integrally connected with a connecting cavity, and a tensioning member is arranged on the outer side of the bottom rib. The pipe segment of the present invention is made of a steel shell, and is first jacked and then poured with concrete. The jacking machine matches the shape of the pipe segment. During the jacking process, waste soil can be discharged from between the inner shell and the outer shell of the pipe segment, while retaining the soil and rocks inside the inner shell, thereby reserving core soil to reduce disturbance to the soil body, which can effectively reduce the demand for large-section jacking machines and can be used for the demolition and reconstruction of existing underground structures.

Description

Technical Field

[0001] The invention relates to the field of tunnel pipe segments, in particular to a prefabricated steel shell concrete annular tunnel pipe segment structure. Background Art

[0002] Pipe jacking construction is a trenchless construction method, which is a pipeline burial construction technology with no excavation or less excavation. Pipe jacking construction is to overcome the friction between the pipe segment structure and the surrounding soil with the help of the jacking force generated by the jacking equipment in the working pit, push the pipe segment structure into the soil according to the designed slope, and transport the soil away. Existing pipe jacking technology mostly uses large-section pipe jacking machines for jacking construction, which has a large cutting area and great disturbance to the soil. If small jacking pipe curtain technology is used, the joints between the pipe curtains are difficult to handle and the waterproof effect is poor. In addition, considering that the existing pipe segment structures are mostly made of direct concrete pouring, most of them are directly jacked during jacking, and the pipe segment structure lacks external mechanisms for connection, which makes the pipe segment structure prone to skew and dislocation during the jacking process. At the same time, the connection between the two pipe segments is prone to leakage or settlement dislocation due to loose connection. For this reason, a prefabricated steel shell concrete annular tunnel pipe segment structure is proposed. Summary of the invention

[0003] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0004] Therefore, the object of the present invention is to provide a prefabricated steel shell concrete annular tunnel pipe segment structure.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising: a pipe joint assembly, comprising an inner shell, an outer shell sleeved outside the inner shell, a stiffening rib fixed between the inner shell and the outer shell, a connecting ring and a sleeve fixed at both ends of the outer shell, and an interface ring fixed at one end of the inner shell; and,

[0006] The connecting component includes a top rib fixed on the inner wall of the connecting ring and a bottom rib fixed on the outer wall of the interface ring. The bottom of the top rib is integrally connected with a connecting cavity. A tensioning piece is arranged on the outer side of the bottom rib. A connecting piece is sleeved on the outer side of the tensioning piece. A guide piece is sleeved on the outer side of the connecting piece. A push spring is also arranged between the connecting cavity and the top rib.

[0007] As a preferred solution of the prefabricated steel shell concrete annular tunnel pipe segment structure of the present invention, wherein: a plurality of stiffening ribs are arranged at equal intervals between the outer shell and the inner shell;

[0008] The connecting ring and the sleeve mouth cooperate with each other.

[0009] As a preferred solution of the prefabricated steel shell concrete annular tunnel pipe segment structure of the present invention, the tensioning member includes a tensioning column fixed to one side of the bottom rib, and one end of the tensioning column is also movably connected to an anti-drop rod.

[0010] As a preferred solution of the prefabricated steel shell concrete annular tunnel pipe segment structure of the present invention, the connecting piece includes an insertion sleeve sleeved on the outside of the tensioning column, a clamping plate is hingedly provided on the outer wall of the insertion sleeve, a torsion spring is provided at the hinge between the clamping plate and the insertion sleeve, a positioning groove is provided on the surface of the insertion sleeve, one end of the positioning groove is connected to a push groove, and an anti-slip groove is also provided on the inner wall of the insertion sleeve.

[0011] As a preferred solution of the prefabricated steel shell concrete annular tunnel pipe segment structure of the present invention, the front end of the tension column and the insertion sleeve are threadedly matched.

[0012] As a preferred solution of the prefabricated steel shell concrete annular tunnel pipe segment structure of the present invention, one end of the anti-slip rod is movably embedded in the anti-slip groove.

[0013] As a preferred solution of the prefabricated steel shell concrete annular tunnel pipe segment structure of the present invention, the positioning groove is arranged in a horizontal notch, and the push groove is arranged in a spiral along the outer wall of the insertion sleeve.

[0014] As a preferred solution of the prefabricated steel shell concrete annular tunnel pipe segment structure of the present invention, wherein: the push groove is connected to the positioning groove, and the depth of the push groove is greater than the positioning groove.

[0015] As a preferred solution of the prefabricated steel shell concrete annular tunnel pipe segment structure of the present invention, wherein: an embedding groove matching with the guide member is reserved on the outer surface of the top rib;

[0016] The guide member comprises a guide sleeve with a ridge-shaped periphery, a spring is embedded in the inner wall of the guide sleeve, and one end of the spring is fixedly connected to a guide head.

[0017] As a preferred solution of the prefabricated steel shell concrete annular tunnel pipe segment structure of the present invention, the guide head can be matched with the positioning groove and the push groove respectively.

[0018] The beneficial effects of the prefabricated steel shell concrete annular tunnel pipe segment structure of the present invention are as follows: the pipe segment of the present invention is made of a steel shell, which is first jacked and then poured with concrete, the pipe jacking machine matches the shape of the pipe segment, and during the jacking process, waste soil can be discharged from between the inner shell and the outer shell of the pipe segment, while retaining the soil and rocks inside the inner shell, thereby reserving core soil to reduce disturbance to the soil body, which can effectively reduce the demand for large-section pipe jacking machines and can be used for the demolition and reconstruction of existing underground structures;

[0019] Through the cooperation between the bottom ribs and the top ribs respectively arranged on the two top pipes, when the top pipes are connected, support can be provided for the connection, the connection strength of the two top pipes is increased, and the possibility of deformation of the connection is reduced. At the same time, under the locking cooperation between the tensioning member, the connecting member and the top rib connecting cavity, when connected, the tensioning and locking between the two top pipes can be achieved simultaneously, so that the connection between the two top pipes is faster and more efficient, and at the same time, a tight connection between the top pipes is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the prefabricated steel shell concrete annular tunnel segment structure.

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the prefabricated steel shell concrete annular tunnel pipe segment structure.

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the connection components in the prefabricated steel shell concrete annular tunnel pipe segment structure.

[0024] Figure 4 This is a schematic diagram of the local structure of the connecting parts in the prefabricated steel shell concrete annular tunnel segment structure.

[0025] Figure 5 This is a schematic diagram of the connection structure between the clamping plate and the torsion spring in the prefabricated steel shell concrete annular tunnel pipe segment structure.

[0026] Figure 6 This is a schematic diagram of the matching structure of the insertion sleeve and the tension column in the prefabricated steel shell concrete annular tunnel pipe segment structure.

[0027] Figure 7 This is a schematic diagram of the structure of the guide parts in the prefabricated steel shell concrete annular tunnel segment structure.

[0028] In the figure: 100, pipe joint assembly; 101, inner shell; 102, outer shell; 103, stiffening rib; 104, connecting ring; 105, sleeve; 106, interface ring; 200, connecting assembly; 201, top rib; 201a, embedded groove; 202, bottom rib; 203, connecting cavity; 204, tension member; 204a, tension column; 204b, anti-slip rod; 205, connecting member; 205a, insertion sleeve; 205b, tightening plate; 205c, torsion spring; 205d, positioning groove; 205e, push groove; 205f, anti-slip groove; 206, guide member; 206a, guide sleeve; 206b, spring; 206c, guide head; 207, push spring. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] Example 1, reference Figure 1~Figure 2 , which is the first embodiment of the present invention, provides a prefabricated steel shell concrete annular tunnel pipe segment structure, which can utilize the hollow interior of the structure for excavation and reserve core soil to reduce disturbance to the soil, and includes a pipe segment assembly 100.

[0031] Specifically, the pipe joint assembly 100 includes an inner shell 101 mainly used to support force, and the outer shell 102 with a certain anti-corrosion ability is provided on the outside of the inner shell 101, and a plurality of stiffening ribs 103 perpendicular to the shell are arranged in sequence between the inner shell 101 and the outer shell 102. The stiffening ribs 103 can improve the supporting strength of the outer shell 102 and the inner shell 101. The two ends of the outer shell 102 are respectively integrally connected with a connecting ring 104 and a sleeve 105, and one end of the inner shell 101 is also fixedly connected with an interface ring 106.

[0032] Furthermore, the connecting ring 104 and the sleeve 105 cooperate with each other, so that the pipe segment assemblies 100 can be connected in pairs under the sleeve cooperation between the connecting ring 104 and the sleeve 105, so that the pipe segment assemblies 100 can be stably pushed forward by the pipe jacking machine.

[0033] When in use, the pipe segment assembly 100 is placed on the pipe jacking machine. As the pipe jacking machine is pushed forward, the two pipe segment assemblies 100 are connected with each other by means of the connecting ring 104 and the sleeve 105. The pipe segment assembly 100 is pushed back and forth in sequence. At the same time, waste soil is discharged from the space between the inner shell 101 and the outer shell 102, thereby retaining the core soil to reduce the disturbance to the soil. After all the jacking is completed, concrete is poured into the inside of the pipe segment to form a tunnel, and then the core soil in the center of the pipe segment is excavated.

[0034] Example 2, reference Figure 1 to Figure 7, which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a connection assembly 200 of a prefabricated steel shell concrete annular tunnel pipe segment structure, which solves the problem of insufficient strength at the joints and inconvenient connection when connecting the pipe segment structure.

[0035] Specifically, the connecting component 200 includes a top rib 201 fixed on the inner wall of the connecting ring 104 and a bottom rib 202 fixed on the outer wall of the interface ring 106, the bottom of the top rib 201 is integrally connected with a connecting cavity 203, a tensioning member 204 is arranged on the outer side of the bottom rib 202, a connecting member 205 is sleeved on the outer side of the tensioning member 204, a guide member 206 is sleeved on the outer side of the connecting member 205, and a push spring 207 is also arranged between the connecting cavity 203 and the top rib 201.

[0036] Furthermore, the tensioning member 204 includes a tensioning column 204a fixed to one side of the bottom rib 202, one end of the tensioning column 204a is also movably connected to an anti-dropout rod 204b, and the connection point between the anti-dropout rod 204b and the tensioning column 204a is located on the axis of the tensioning column 204a.

[0037] The connecting member 205 includes an insertion sleeve 205a which is sleeved on the outside of the tensioning column 204a, and a clamping plate 205b is hingedly arranged on the outer wall of the insertion sleeve 205a, and a groove matching the clamping plate 205b is arranged on the outer wall of the insertion sleeve 205a, so that the clamping plate 205b can be hidden on the outer wall of the insertion sleeve 205a when it is in a folded state, and a torsion spring 205c is arranged at the hinge between the clamping plate 205b and the insertion sleeve 205a, and the setting of the torsion spring 205c can make the clamping plate 205b automatically rotate outward and open when not restricted, and a positioning groove 205d is also reserved on the surface of the insertion sleeve 205a, and one end of the positioning groove 205d is connected to a push groove 205e, and an anti-slip groove 205f is also reserved on the inner wall of the insertion sleeve 205a.

[0038] An embedding groove 201a that cooperates with the guide member 206 is reserved on the outer surface of the top rib 201. The guide member 206 includes a guide sleeve 206a that is arranged in a ridge-shaped outer periphery. When the abutting plate 205b is in a folded state, the guide sleeve 206a is sleeved on the outside thereof to limit the abutting plate 205b, and the guide sleeve 206a can be embedded in the embedding groove 201a, so that the embedding groove 201a limits the rotation of the guide sleeve 206a. A spring 206b is embedded in the inner wall of the guide sleeve 206a, and one end of the spring 206b is fixedly connected to a guide head 206c. The guide head 206c can be retracted and retracted with the help of the elastic force of the spring 206b, and the guide head 206c can respectively cooperate with the positioning groove 205d and the push groove 205e.

[0039] Furthermore, the anti-slip groove 205f and the anti-slip rod 204b are matched with each other, that is, one end of the anti-slip rod 204b is movably embedded in the anti-slip groove 205f, thereby avoiding the insertion sleeve 205a and the tensioning column 204a from being separated, and ensuring the subsequent smooth cooperation between the insertion sleeve 205a and the tensioning column 204a. At the same time, by placing the connection point between the anti-slip rod 204b and the tensioning column 204a on the axis of the tensioning column 204a, it can be ensured that when the insertion sleeve 205a rotates subsequently, the anti-slip rod 204b can rotate synchronously, so that the two do not interfere with each other.

[0040] Preferably, the guide head 206c can be matched with the positioning groove 205d and the push groove 205e respectively, and the positioning groove 205d is set as a horizontal notch, so that during the insertion process of the insertion sleeve 205a, the guide head 206c is in the positioning groove 205d. With the help of the horizontal setting of the positioning groove 205d, the guide sleeve 206a can be ensured to smoothly enter the interior of the embedded groove 201a. Subsequently, even if the guide sleeve 206a and the insertion sleeve 205a move relative to each other, the abutting plate 205b on the insertion sleeve 205a can smoothly enter the interior of the connecting cavity 203 and open smoothly under the action of the torsion spring 205c, and the push groove 205e is connected with the positioning groove 205d. When the abutting plate 205b is opened smoothly, it means that the insertion sleeve 205a completely squeezes the push spring 207, and the guide head 20 6c synchronously moves to the connection between the push groove 205e and the positioning groove 205d. It should be pointed out that the depth of the push groove 205e is greater than the positioning groove 205d. At the same time, the push groove 205e is spirally arranged along the outer wall of the insertion sleeve 205a. Therefore, when the guide head 206c is located in the push groove 205e, it is further extended under the elastic force of the spring 206b and is completely embedded in the push groove 205e. Therefore, when the push spring 207 acts on the insertion sleeve 205a in the reverse direction, the guide head 206c can be prevented from moving in the positioning groove 205d, and then under the cooperation between the spirally arranged push groove 205e and the guide head 206c, the insertion sleeve 205a can be rotated under the push of the push spring 207, so as to realize the final cooperation between the insertion sleeve 205a and the tensioning column 204a.

[0041] The front end of the tensioning column 204a and the insertion sleeve 205a are threadedly matched, so that when the insertion sleeve 205a is pushed by the push spring 207 and rotates, the tensioning column 204a and the insertion sleeve 205a can gradually achieve threaded matching and locking, and the movement of the insertion sleeve 205a makes the clamping plate 205b and the side of the connecting cavity 203 close to the tensioning column 204a press against each other, thereby realizing the connection of the two groups of pipe joint structures and making the two pipe joint structures relatively tightened, thereby ensuring the stability and tightness of the connection between the pipe joints.

[0042] When in use, align the two groups of pipe sections head to tail, insert the sleeve 105 of one pipe section into the connecting ring 104 of the other pipe section, and as the two pipe sections cooperate, the corresponding insertion sleeve 205a is gradually inserted into the connecting cavity 203 of the top rib 201 at the corresponding position. As the insertion sleeve 205a is inserted, the guide sleeve 206a moves into the embedded groove 201a and is restricted by the embedded groove 201a to move relative to the insertion sleeve 205a, releasing the restriction on the abutting plate 205b in the folded state. As the insertion sleeve 205a is fully inserted, the abutting plate 205b is completely moved to the connecting cavity 203. In the connecting cavity 203, the clamping plate 205b is fully expanded, and the push spring 207 is in a fully compressed state, and the guide head 206c moves into the push groove 205e. Then, the insertion sleeve 205a is rotated under the elastic force of the push spring 207, and the guide head 206c and the push groove 205e cooperate to make it rotate, so that it is gradually tightened and locked with the tensioning column 204a with the help of the corresponding thread between the tensioning column 204a, and at the same time, the clamping plate 205b is pressed against the side of the connecting cavity 203 close to the tensioning column 204a, and the connection between the two pipe sections is completed at this time.

[0043] In summary, through the cooperation between the bottom rib 202 and the top rib 201 respectively arranged on the two pipe sections, when the pipe sections are connected, support for the connection can be achieved, the connection strength of the two pipe sections is increased, and the possibility of deformation of the connection is reduced. At the same time, under the locking cooperation between the tensioning member 204, the connecting member 205 and the connecting cavity 203 of the top rib 201, the tensioning and locking between the two pipe sections can be achieved simultaneously during connection, making the connection between the two pipe sections faster and more efficient, while ensuring a tight connection between the pipe sections.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A prefabricated steel shell concrete annular tunnel pipe segment structure, characterized in that: include, A pipe joint assembly (100) comprises an inner shell (101), an outer shell (102) sleeved outside the inner shell (101), a stiffening rib (103) fixed between the inner shell (101) and the outer shell (102), a connecting ring (104) and a sleeve (105) fixed at both ends of the outer shell (102), and an interface ring (106) fixed at one end of the inner shell (101); and, A connecting assembly (200), comprising a top rib (201) fixed on the inner wall of a connecting ring (104) and a bottom rib (202) fixed on the outer wall of an interface ring (106); the bottom of the top rib (201) is integrally connected with a connecting cavity (203); a tensioning member (204) is provided on the outer side of the bottom rib (202); a connecting member (205) is sleeved on the outer side of the tensioning member (204); a guide member (206) is sleeved on the outer side of the connecting member (205); and a push spring (207) is further provided between the connecting cavity (203) and the top rib (201); The tensioning member (204) comprises a tensioning column (204a) fixed to one side of the bottom rib (202), and one end of the tensioning column (204a) is also movably connected to an anti-dropping rod (204b); The connecting member (205) comprises an insertion sleeve (205a) sleeved on the outside of the tensioning column (204a); a clamping plate (205b) is hingedly provided on the outer wall of the insertion sleeve (205a); a torsion spring (205c) is provided at the hinge between the clamping plate (205b) and the insertion sleeve (205a); a positioning groove (205d) is provided on the surface of the insertion sleeve (205a); one end of the positioning groove (205d) is connected to a push groove (205e); and an anti-slip groove (205f) is also provided on the inner wall of the insertion sleeve (205a); The front end of the tensioning column (204a) and the insertion sleeve (205a) are threadedly matched; The positioning groove (205d) is arranged in the form of a horizontal groove, and the pushing groove (205e) is arranged in a spiral shape along the outer wall of the insertion sleeve (205a).

2. The prefabricated steel shell concrete annular tunnel pipe segment structure according to claim 1, characterized in that: A plurality of stiffening ribs (103) are arranged at equal intervals between the outer shell (102) and the inner shell (101); The connecting ring (104) and the sleeve opening (105) cooperate with each other.

3. The prefabricated steel shell concrete annular tunnel pipe segment structure according to claim 1, characterized in that: One end of the anti-slip rod (204b) is movably embedded in the anti-slip groove (205f).

4. The prefabricated steel shell concrete annular tunnel pipe segment structure according to claim 1, characterized in that: The push groove (205e) is connected to the positioning groove (205d), and the depth of the push groove (205e) is greater than that of the positioning groove (205d).

5. The prefabricated steel shell concrete annular tunnel pipe segment structure according to claim 4, characterized in that: An embedding groove (201a) matching with the guide member (206) is provided on the outer side surface of the top rib (201); The guide member (206) comprises a guide sleeve (206a) with an outer periphery arranged in a prismatic shape, a spring (206b) is embedded in the inner wall of the guide sleeve (206a), and one end of the spring (206b) is fixedly connected to a guide head (206c).

6. The prefabricated steel shell concrete annular tunnel pipe segment structure according to claim 5, characterized in that: The guide head (206c) can be matched with the positioning groove (205d) and the pushing groove (205e) respectively.

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