Construction method of tunnel construction device without inverted arch area small side wall

Abstract

The application discloses a tunnel small side wall construction device and method without inverted arch area, belongs to the technical field of tunnel small side wall construction, and comprises a leveling layer side mold template mechanism, wherein the leveling layer side mold template mechanism comprises a face plate and a vertical support, and the face plate is arranged in a curved surface mode; a bottom support plate is arranged at the bottom of the leveling layer side mold template mechanism, a horizontal moving component is arranged on the bottom support plate, the horizontal moving component is suitable for driving the leveling layer side mold template to move horizontally, a longitudinal moving component is arranged at the bottom of the bottom support plate, the longitudinal moving component is suitable for driving the leveling layer side mold template to move longitudinally, a plurality of groups of hydraulic rods are arranged on one side of the vertical support opposite to the face plate, the plurality of groups of hydraulic rods are arranged in parallel, an output end of each hydraulic rod is provided with a jacking support, and the jacking support is suitable for being supported on the side wall of primary support. The application solves the technical problems of incorrect use of secondary lining and leveling layer concrete and non-strict linear control of the position of the arch foot of the secondary lining in the prior art.

Description

Technical Field

[0001] This invention belongs to the field of tunnel sidewall construction technology, and further elaborates on the construction method of a tunnel sidewall construction device in areas without inverted arches. Background Technology

[0002] Currently, various quality hazards exist in the construction of small sidewalls in tunnels without invert arches, all of which are fatal to the secondary lining structure. Generally, the secondary lining structure and the leveling layer have different concrete strength grades. During on-site construction, low-grade concrete is sometimes used instead of high-grade concrete, severely affecting the overall stress of the secondary lining structure and seriously impacting tunnel quality and safety. Alternatively, the linear control of the arch foot position is not strict, failing to achieve the design effect and meet the design intent, causing stress concentration at the arch foot, affecting the stress of the secondary lining structure, and seriously impacting tunnel quality and safety. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the inventors, through practice and summarization, derived the technical solution of this invention. This invention discloses the basic concept of the technical solution adopted to solve the above-mentioned technical problems as follows:

[0004] A construction device for small sidewalls in tunnel areas without inverted arches includes a leveling layer side formwork mechanism, wherein the leveling layer side formwork mechanism includes a panel and vertical supports, and the panel is curved.

[0005] The bottom of the leveling layer side mold template mechanism is equipped with a bottom support plate, and a transverse moving component is installed on the bottom support plate. The transverse moving component is adapted to drive the leveling layer side mold template to move laterally. A longitudinal moving component is installed at the bottom of the bottom support plate, and the longitudinal moving component is adapted to drive the leveling layer side mold template to move longitudinally.

[0006] Multiple sets of hydraulic rods are installed on the side of the vertical support facing away from the panel. The multiple sets of hydraulic rods are arranged in parallel, and the output end of the hydraulic rods is equipped with a top support. The top support is adapted to support the side wall of the initial support.

[0007] In a further technical solution, the leveling layer side mold template mechanism also includes horizontal braces and diagonal braces, both of which are disposed between the vertical brace and the panel; and the two ends of the horizontal brace are fixedly connected to the vertical brace and the panel respectively, and the two ends of the diagonal brace are fixedly connected to the vertical brace and the panel respectively.

[0008] In a further technical solution, the transverse component includes a transverse motor and a transverse track. The transverse track is fixed to the bottom support plate, and the output end of the transverse motor is set downward and passes through the transverse support located at the bottom of the leveling layer side mold template mechanism.

[0009] The transverse track is provided with an inner cavity groove, and a toothed plate is provided in the inner cavity groove. The output end of the transverse motor is located in the inner cavity groove and a first gear is installed thereon. The first gear meshes with the toothed plate. The transverse motor is adapted to drive the leveling layer side template mechanism to move laterally.

[0010] In a further technical solution, bending plates are installed on both sides of the transverse track. The top of the bending plates is fixedly connected to the cross brace, and guide rollers are installed at the bottom of the bending plates. The two sides of the transverse track are "C"-shaped, and guide grooves are opened on the inner wall. The guide rollers are installed in the guide grooves.

[0011] In a further technical solution, the longitudinal movement component includes a longitudinal movement motor and a longitudinal movement track. The longitudinal movement track is installed at the bottom of the bottom support plate, the body of the longitudinal movement motor is installed on the bottom support plate, and the output shaft of the longitudinal movement motor is adapted to pass through the bottom support plate and a second gear is installed in the longitudinal movement track.

[0012] The longitudinal track has an inner cavity groove and a toothed plate 2 is installed thereon, and the second gear meshes with the toothed plate 2.

[0013] In a further technical solution, a guide plate is installed in the inner cavity groove located in the longitudinal movement track, and the upper end of the guide plate is fixedly connected to the bottom support plate;

[0014] A strip block is provided inside the longitudinal track, and the guide plate is "L" shaped, with the bottom of the guide plate adapted to fit against the bottom of the strip block.

[0015] In a further technical solution, a controller is also installed on the side of the vertical support facing away from the panel. The controller includes component one and component two. Component one is adapted to control multiple sets of hydraulic rods to extend or retract synchronously. Component two is adapted to control the opening and closing of the electric longitudinal and transverse motors.

[0016] A construction method for a small sidewall construction device in a tunnel without an invert arch includes the following construction steps:

[0017] Before constructing the secondary lining sidewalls of the tunnel, a leveling layer should be poured first.

[0018] Step 1: First, lay the longitudinal track and operate the controller to make the leveling layer side formwork template system drive the second gear to mesh with the toothed plate two in the longitudinal track through the longitudinal motor, and move longitudinally to the design position;

[0019] Step 2: Then, by operating the controller, the transverse motor drives the first gear in the transverse track to mesh with the toothed plate 1, and transverse to the designed position;

[0020] Step 3: Finally, operate the controller to start the hydraulic rod so that the top support is pushed to the initial support surface of the tunnel to prevent the leveling layer side formwork from being squeezed and moved during the pouring of the leveling layer concrete, which would cause the leveling layer concrete to intrude into the secondary lining concrete.

[0021] Step 4: Install the end formwork. After the leveling layer concrete is poured and the concrete strength reaches 2.5 MPa, remove the end formwork. When the concrete strength reaches 5 MPa, operate the controller to start the hydraulic rod and retract it.

[0022] Step 5: Then operate the controller to drive the first gear in the transverse track to mesh with the toothed plate 1 and move it laterally to the initial support surface to a position that does not affect the longitudinal movement of the leveling layer side mold template system, thus completing the demolding.

[0023] Step 6: Then operate the controller to drive the leveling layer side formwork system through the longitudinal movement motor in the longitudinal movement track to engage the second gear with the toothed plate, so that the leveling layer side formwork system moves to the next cycle leveling layer construction position through the linkage of the longitudinal movement track and the longitudinal movement motor.

[0024] Step 7: After the leveling layer side formwork system is removed, install the small side wall reinforcement and the reserved reinforcement of the secondary lining, install the small side wall end formwork, pour the small side wall concrete until it is flush with the leveling layer, and roughen the top surface of the small side wall before constructing the secondary lining.

[0025] Beneficial effects: The separate casting method effectively prevents the mixing of concrete of different strength grades, while ensuring the linearity of the small sidewalls of the secondary lining structure. This is beneficial to the overall stress distribution of the secondary lining structure, improving tunnel quality and safety. Furthermore, the use of integral movable side formwork significantly saves time on manual formwork erection and improves concrete quality.

[0026] Secondly, the movement is directionally determined by the guide rollers and guide plates set on the longitudinal and transverse tracks. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the cross-section of the tunnel sidewall of the present invention;

[0029] Figure 2 This is a front view of the small sidewall construction equipment of the present invention;

[0030] Figure 3 for Figure 2Enlarged view of part A;

[0031] Figure 4 This is a schematic diagram of the drive mechanism for the transverse motor and transverse track of the present invention.

[0032] 1. Panel; 2. Vertical brace; 3. Bottom support plate; 4. Lateral movement component; 5. Longitudinal movement component; 6. Hydraulic rod; 7. Top support; 8. Horizontal brace; 9. Diagonal brace; 10. Controller;

[0033] 41. Transverse motor; 42. Transverse track; 43. Toothed plate one; 44. First gear; 45. Bending plate; 46. Guide roller;

[0034] 51. Longitudinal motor; 52. Longitudinal track; 53. Second gear; 54. Toothed plate II; 55. Guide plate; 56. Strip block; 100. Initial support; 101. Small side wall; 102. Leveling layer. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0036] The application principle of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] Example 1

[0038] like Figure 1 and 2 As shown, a construction device for small sidewalls in tunnel areas without inverted arches includes a leveling layer side formwork mechanism, which includes a panel 1 and a vertical support 2, with the panel 1 being curved.

[0039] The bottom of the leveling layer side mold template mechanism is equipped with a bottom support plate 3, and a transverse moving component 4 is installed on the bottom support plate 3. The transverse moving component 4 is suitable for driving the leveling layer side mold template to move laterally. The bottom of the bottom support plate 3 is equipped with a longitudinal moving component 5, which is suitable for driving the leveling layer side mold template to move longitudinally.

[0040] Multiple sets of hydraulic rods 6 are installed on the side of the vertical support 2 facing away from the panel 1. The multiple sets of hydraulic rods 6 are arranged in parallel, and the output end of the hydraulic rods 6 is equipped with a top support 7. The top support 7 is suitable for supporting the side wall of the initial support 100.

[0041] The leveling layer side mold template mechanism also includes a horizontal brace 8 and a diagonal brace 9, both of which are set between the vertical brace 2 and the panel 1; and the two ends of the horizontal brace 8 are fixedly connected to the vertical brace 2 and the panel 1 respectively, and the two ends of the diagonal brace 9 are fixedly connected to the vertical brace 2 and the panel 1 respectively.

[0042] Example 2

[0043] like Figure 3 As shown, another embodiment of the present invention is presented. Based on embodiment 1, the transverse moving component 4 includes a transverse moving motor 41 and a transverse moving track 42. The transverse moving track 42 is fixed on the bottom support plate 3. The output end of the transverse moving motor 41 is set downward and passes through the cross brace 8 located at the bottom of the leveling layer side mold template mechanism. An inner cavity groove is provided on the transverse moving track 42, and a toothed plate 43 is provided in the inner cavity groove. A first gear 44 is installed in the inner cavity groove at the output end of the transverse moving motor 41, and the first gear 44 meshes with the toothed plate 43. The transverse moving motor 41 is suitable for driving the leveling layer side mold template mechanism to move laterally. Bending plates 45 are installed on both sides of the transverse moving track 42. The top of the bending plates 45 is fixedly connected to the cross brace 8, and a guide roller 46 is installed at the bottom of the bending plates 45. The two sides of the transverse moving track 42 are "C"-shaped, and a guide groove is opened on the inner wall. The guide roller 46 is installed in the guide groove.

[0044] Example 3

[0045] like Figure 4 As shown, another embodiment of the present invention is based on embodiment 1. The longitudinal moving component 5 includes a longitudinal moving motor 51 and a longitudinal moving track 52. The longitudinal moving track 52 is installed at the bottom of the bottom support plate 3. The body of the longitudinal moving motor 51 is installed on the bottom support plate 3. The output shaft of the longitudinal moving motor 51 is adapted to pass through the bottom support plate 3 and a second gear 53 is installed in the longitudinal moving track 52. An inner cavity groove is opened in the longitudinal moving track 52 and a toothed plate 54 is installed thereon. The second gear 53 meshes with the toothed plate 54.

[0046] A guide plate 55 is installed in the inner cavity groove of the longitudinal track 52. The upper end of the guide plate 55 is fixedly connected to the bottom support plate 3. A strip block 56 is provided in the longitudinal track 52. The guide plate 55 is "L" shaped and the bottom of the guide plate 55 is suitable for fitting against the bottom of the strip block 56.

[0047] Limiting mechanisms are installed within the transverse and longitudinal tracks to restrict the movement range of the transverse and longitudinal motors and prevent the first and second gears from disengaging from their respective inner grooves. The limiting mechanisms can be fixed columns, blocks, or other structures, or they can be located at the ends of strip blocks or guide grooves to restrict the movement of guide plates or guide rollers.

[0048] Furthermore, a controller 10 is installed on the side of the vertical support 2 facing away from the panel 1. The controller 10 includes component one and component two. Component one is suitable for controlling the synchronous extension or retraction of multiple sets of hydraulic rods 6; component two is suitable for controlling the opening and closing of the electrically controlled longitudinal motor 51 and transverse motor 41. Component one is a control component that controls the hydraulic circuit, such as controlling the opening and closing of the hydraulic pump in the hydraulic circuit. Figure 2The three sets of hydraulic rods shown have hydraulic pipes connected to both their input and output ends, and are connected to a hydraulic pump to drive the pump's opening and closing, thus synchronously controlling the extension or retraction of the three sets of hydraulic rods. Component two is a motor controller for controlling the transverse and longitudinal motors, which sets the opening and closing of multiple motors.

[0049] A construction method for a small sidewall construction device in a tunnel without an invert arch includes the following construction steps:

[0050] Before constructing the secondary lining sidewall 101 of the tunnel, the leveling layer 102 should be poured first.

[0051] Step 1: First, lay the longitudinal track 52 and operate the controller 10 so that the leveling layer side mold template system drives the second gear 53 to mesh with the toothed plate 54 in the longitudinal track 52 through the longitudinal motor 51, and moves longitudinally to the design position.

[0052] Step 2: Then, by operating the controller 10, the transverse motor 41 drives the first gear 44 in the transverse track 42 to mesh with the toothed plate 43, and transverse to the designed position.

[0053] Step 3: Finally, operate the controller 10 to start the hydraulic rod 6, so that the top support 7 is pushed to the surface of the tunnel initial support 100 to prevent the leveling layer side formwork from being squeezed and moved during the pouring of the leveling layer 102 concrete, so that the leveling layer 102 concrete can intrude into the secondary lining concrete.

[0054] Step 4: Install the end formwork. After the leveling layer 102 concrete is poured and the concrete strength reaches 2.5 MPa, remove the end formwork. When the concrete strength reaches 5 MPa, operate the controller 10 to start the hydraulic rod 6 and retract the hydraulic rod 6. The normal strength is 2.5 MPa, but since the side wall of the leveling layer is similar to a cantilever structure at this time, it is extended to 5 MPa.

[0055] Step 5: Then operate the controller 10 to drive the transverse motor 41 to drive the first gear 44 in the transverse track 42 to mesh with the toothed plate 43, and move transversely to the initial support 100 surface to a position that does not affect the longitudinal movement of the leveling layer side mold template system, thus completing the demolding.

[0056] Step 6, then operate the controller 10 to drive the leveling layer side formwork system to engage the toothed plate 54 with the second gear 53 through the longitudinal movement motor 51 in the longitudinal movement track 52, so that the leveling layer side formwork system moves to the construction position of the next cycle leveling layer 102 through the linkage of the longitudinal movement track 52 and the longitudinal movement motor 51.

[0057] Step 7: After the leveling layer side formwork system is removed, install the small side wall reinforcement and the reserved reinforcement of the secondary lining, install the small side wall end formwork, pour the small side wall concrete until it is flush with the leveling layer 102, and roughen the top surface of the small side wall 101 before constructing the secondary lining.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A construction method for a small sidewall construction device in a tunnel without an invert arch, characterized in that, The construction device includes a leveling layer side formwork mechanism, which includes a panel (1) and a vertical support (2), wherein the panel (1) is curved. The bottom of the leveling layer side mold template mechanism is equipped with a bottom support plate (3), and a transverse moving component (4) suitable for driving the leveling layer side mold template to move laterally is installed on the bottom support plate (3). The transverse moving component (4) includes a transverse moving motor (41) and a transverse moving track (42). The bottom of the bottom support plate (3) is equipped with a longitudinal moving component (5) suitable for driving the leveling layer side mold template to move longitudinally. The longitudinal moving component (5) includes a longitudinal moving motor (51) and a longitudinal moving track (52). The vertical support (2) has multiple sets of hydraulic rods (6) installed on the side facing away from the panel (1). The multiple sets of hydraulic rods (6) are arranged in parallel, and the output end of the hydraulic rods (6) is equipped with a top support (7). The top support (7) is suitable for supporting on the side wall of the primary support (100). A controller (10) is also installed on the side of the vertical support (2) facing away from the panel (1). It also includes the following construction steps: Before constructing the small sidewall (101) of the secondary lining of the tunnel, the leveling layer (102) should be poured first. Step 1: First, lay the longitudinal track (52), operate the controller (10), and make the leveling layer side mold template system drive the second gear (53) to mesh with the toothed plate (54) in the longitudinal track (52) through the longitudinal motor (51) to move longitudinally to the design position; Step 2, then by operating the controller (10), the transverse motor (41) drives the first gear (44) in the transverse track (42) to mesh with the toothed plate (43) and transverse to the designed position; Step 3, finally operate the controller (10) and start the hydraulic rod (6) to make the top support (7) push to the surface of the tunnel initial support (100) to prevent the leveling layer (102) concrete from being squeezed and moved during the pouring of the leveling layer (102) concrete, so that the leveling layer (102) concrete can penetrate the secondary lining concrete. Step 4, then install the end formwork. After the leveling layer (102) concrete is poured and the concrete strength reaches 2.5 MPa, remove the end formwork. When the concrete strength reaches 5 MPa, operate the controller (10) to start the hydraulic rod (6) and retract the hydraulic rod (6). Step 5, then operate the controller (10) to drive the first gear (44) in the transverse track (42) to mesh with the toothed plate (43) and move laterally to the initial support (100) surface to a position that does not affect the longitudinal movement of the leveling layer side mold template system, and complete the demolding; Step 6, then operate the controller (10) to drive the leveling layer side formwork system to engage the toothed plate two (54) through the longitudinal movement motor (51) in the longitudinal movement track (52), so that the leveling layer side formwork system moves to the construction position of the next cycle leveling layer (102) through the linkage of the longitudinal movement track (52) and the longitudinal movement motor (51). Step 7: After the leveling layer side formwork system is removed, install the small side wall reinforcement and the secondary lining reserved reinforcement, install the small side wall end formwork, pour the small side wall concrete until it is flush with the leveling layer (102), and roughen the top surface of the small side wall (101) before constructing the secondary lining.

2. The construction method of the tunnel arch-free area small sidewall construction device according to claim 1, characterized in that, The leveling layer side mold template mechanism also includes a horizontal brace (8) and a diagonal brace (9). The horizontal brace (8) and the diagonal brace (9) are both arranged between the vertical brace (2) and the panel (1). The two ends of the horizontal brace (8) are fixedly connected to the vertical brace (2) and the panel (1) respectively, and the two ends of the diagonal brace (9) are fixedly connected to the vertical brace (2) and the panel (1) respectively.

3. The construction method of the tunnel arch-free area small sidewall construction device according to claim 2, characterized in that, The transverse track (42) is fixed on the bottom support plate (3), and the output end of the transverse motor (41) is set downward and passes through the transverse support (8) located at the bottom of the leveling layer side mold template mechanism. The transverse track (42) is provided with an inner cavity groove, and a toothed plate (43) is provided in the inner cavity groove. The output end of the transverse motor (41) is located in the inner cavity groove and a first gear (44) is installed thereon. The first gear (44) meshes with the toothed plate (43). The transverse motor (41) is suitable for driving the leveling layer side template mechanism to move laterally.

4. The construction method of the tunnel arch-free area small sidewall construction device according to claim 3, characterized in that, Bending plates (45) are installed on both sides of the transverse track (42). The top of the bending plate (45) is fixedly connected to the cross brace (8). The bottom of the bending plate (45) is equipped with a guide roller (46). The two sides of the transverse track (42) are "C" shaped and the inner wall is provided with a guide groove. The guide roller (46) is installed in the guide groove.

5. The construction method of the tunnel arch-free area small sidewall construction device according to claim 4, characterized in that, The longitudinal track (52) is installed at the bottom of the bottom support plate (3), the body of the longitudinal motor (51) is installed on the bottom support plate (3), and the output shaft of the longitudinal motor (51) is adapted to pass through the bottom support plate (3) and a second gear (53) is installed in the longitudinal track (52). The longitudinal track (52) has an inner cavity groove and a toothed plate (54) is installed thereon, and the second gear (53) meshes with the toothed plate (54).

6. The construction method of the tunnel arch-free area small sidewall construction device according to claim 5, characterized in that, A guide plate (55) is installed in the inner cavity groove of the longitudinal track (52), and the upper end of the guide plate (55) is fixedly connected to the bottom support plate (3); The longitudinal track (52) is provided with a strip block (56), the guide plate (55) is "L" shaped, and the bottom of the guide plate (55) is adapted to fit against the bottom of the strip block (56).

7. The construction method of the tunnel arch-free area small sidewall construction device according to claim 6, characterized in that, The controller (10) includes component one and component two. Component one is adapted to control multiple sets of hydraulic rods (6) to extend or retract synchronously. Component two is adapted to control the opening and closing of the electric longitudinal motor (51) and the transverse motor (41).

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