Tunnel inverted arch steel bar and main bar limiting device

Abstract

The utility model discloses a tunnel inverted arch steel bar and main bar limiting device which comprises an adjusting piece and a support, the support is fixed to an inverted arch formwork, and the adjusting piece is arranged on the support and can be operated to adjust the position. The positions of the adjusting pieces are adjusted, and the inverted arch steel bars and the main bars are limited to set positions through the limiting ends of the adjusting pieces; inverted arch steel bars and main reinforcements are limited to set positions by adjusting the longitudinal adjusting pieces and the transverse adjusting pieces, so that the thickness of a steel bar protection layer and the distance between the main reinforcements are adjusted, the problem that the distance between the steel bar protection layer and the main reinforcements is insufficient is solved, and it can be guaranteed that the steel bars are located at the set positions; and the phenomenon of steel bar displacement caused by personnel treading or other interferences can be avoided, the operation is flexible, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the field of tunnel invert reinforcement protection layer, in particular to a tunnel invert reinforcement and main reinforcement limiting device. Background Art

[0002] In the large-scale construction of high-speed railway networks and highway networks, huge tunnel projects need to be built. During the construction of the steel protection layer and the main reinforcement spacing of the tunnel invert and the low side wall where the invert is higher than the filling top surface, insufficient phenomena often occur. The thickness of the steel protection layer and the estimated main reinforcement spacing are important sub-construction contents of the tunnel project, and play an extremely important role in the durability and stability of the tunnel lining concrete.

[0003] In the prior art, the steel bar limiting device is used to position the steel bar, which can ensure that the inverted arch steel bar has a certain thickness of the steel bar protective layer, and solves the problem of steel bar protective layer deviation. However, the steel bar limiting device cannot effectively limit the spacing of the main bars, and the main bars are prone to displacement during the construction process. The traditional steel bar protective layer and the main bar spacing are controlled by manually adjusting the steel bars, but they are easily trampled by humans during the construction and binding of the steel bars, and are also prone to displacement of the steel bars and deviation of the steel bar protective layer during the pouring of concrete. The manual adjustment operation is frequent and the construction progress is slow.

[0004] Therefore, it is necessary to improve the existing technology for controlling the steel bar protection layer and main bar spacing of the tunnel invert, so as to limit the spacing of the main bars and ensure that the steel bar protection layer of the short side wall or invert has sufficient thickness, thus solving the problem of insufficient steel bar protection layer and main bar spacing. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a tunnel invert reinforcement and main reinforcement limiting device, which can limit the spacing of the main reinforcements and ensure that the reinforcement protection layer of the short side wall or the invert has sufficient thickness, thereby solving the problem of insufficient reinforcement protection layer and main reinforcement spacing.

[0006] The utility model discloses a tunnel inverted arch reinforcement and main reinforcement limiting device, comprising an adjusting member and a bracket, wherein the bracket is fixed to the inverted arch formwork, the adjusting member is arranged on the bracket and can be operated in an adjusting position, and the inverted arch reinforcement and the main reinforcement are limited to the set position by adjusting the position of the adjusting member and by the limiting end of the adjusting member.

[0007] Furthermore, the adjusting member includes a longitudinal adjusting member and a transverse adjusting member. The longitudinal adjusting member is used to limit the set position of the inverted arch steel bar, thereby adjusting the thickness of the steel bar protective layer. The transverse adjusting member is used to limit the set position of the main steel bar, thereby adjusting the main steel bar spacing.

[0008] Furthermore, the longitudinal adjustment member and the transverse adjustment member both have an operable driving end and a limiting end for limiting the inverted arch reinforcement and the main reinforcement to a set position.

[0009] Furthermore, the bracket is provided with two limiting members for limiting the longitudinal adjusting member and the transverse adjusting member, so that the limiting end and the steel bar can be movably matched to be limited.

[0010] Furthermore, the longitudinal adjustment member can be movably connected to the bracket in a limited position along a direction perpendicular to the inverted arch formwork, and the transverse adjustment member can be movably connected to the bracket in a limited position along a direction parallel to the inverted arch formwork.

[0011] Furthermore, the longitudinal adjustment member and the transverse adjustment member both have a movable section connecting the driving end and the limiting end, the limiting member is sleeved on the movable section, and the limiting member cooperates with the movable section to limit the adjustment member.

[0012] Furthermore, the support comprises at least two supporting legs fixed at an angle on the inverted arch formwork, and the two supporting legs are arranged in an "eight" shape.

[0013] Furthermore, a limiting piece of the longitudinal adjustment piece is arranged at the top of the two legs in an "eight" shape, and a limiting piece of the transverse adjustment piece is arranged at the middle of the legs.

[0014] Furthermore, the limiting member is provided with an internal thread, the movable section is a screw rod with an external thread, and the external thread of the screw rod is matched with the internal thread of the limiting member.

[0015] Furthermore, the movement direction of the screw of the longitudinal adjustment member is perpendicular to the inverted arch formwork, the movement direction of the screw of the transverse adjustment member is parallel to the inverted arch formwork, and the driving end and the limiting end are respectively located at two axial ends of the screw.

[0016] The beneficial effects of the utility model are as follows: the tunnel inverted arch steel bar and main reinforcement limiting device of the utility model limits the inverted arch steel bar and the main reinforcement to the set position by adjusting the longitudinal adjustment member and the transverse adjustment member, thereby adjusting the thickness of the steel bar protective layer and the main reinforcement spacing, solving the problem of insufficient steel bar protective layer and main reinforcement spacing, not only ensuring that the steel bar is positioned at the set position, but also avoiding the phenomenon of steel bar displacement caused by human trampling or other interference, and having flexible operation and a wide range of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0018] Figure 1 It is a top view of the utility model;

[0019] Figure 2 It is a front view of the utility model.

[0020] Numbers in the figure: 1, inverted arch formwork; 2, longitudinal adjustment piece; 3, transverse adjustment piece; 4, driving end; 5, limit end; 6, limit piece; 7, movable section; 8, support foot; 9, gasket. DETAILED DESCRIPTION

[0021] Figure 1 It is a top view of the utility model. Figure 2 It is a front view, as shown in the figure, the utility model provides a tunnel inverted arch steel bar and main bar limiting device, including an adjusting member and a bracket, the bracket is fixed to the inverted arch template 1, the adjusting member is arranged on the bracket and can be operated to the adjusting position, the inverted arch steel bar and the main bar are limited to the set position by adjusting the position of the adjusting member and through the limiting end 5 of the adjusting member; the inverted arch is a reverse arch structure arranged at the bottom of the tunnel, which can effectively transfer the stratum pressure of the upper part of the tunnel to the underground through the tunnel side wall structure or the load on the road surface, and can also effectively resist the reaction force transmitted from the lower stratum of the tunnel, and the inverted arch template is a template specially used for making tunnel cement inverted arches, the mold is usually composed of multiple steel plates, which can be assembled and adjusted according to the shape and size of the tunnel, and the cement inverted arch is made by cast-in-place method. The construction environment on site is relatively complex, and the use of an inverted arch template with a high strength grade can help meet the construction needs.

[0022] like Figure 2 As shown, the bracket supports the adjusting member on the inverted arch formwork 1, and the adjusting member is arranged on the bracket, and the bracket is provided with a limiting member 6 for limiting the adjusting member; the position of the steel bar is adjusted by the movement of the adjusting member, and the steel bar is limited to a preset position by limiting the adjusting member by the limiting member 6. Compared with the existing construction method that relies on manual adjustment of the steel bar for control, this scheme is simple to operate, and the limitation of the steel bar can reduce the bundling standard of the steel bar, thereby achieving the effect of reducing costs.

[0023] In this embodiment, the adjusting member includes a longitudinal adjusting member 2 and a transverse adjusting member 3. The longitudinal adjusting member 2 is used to limit the set position of the inverted arch steel bar, thereby adjusting the thickness of the steel bar protective layer. The transverse adjusting member 3 is used to limit the set position of the main reinforcement, thereby adjusting the main reinforcement spacing. The longitudinal direction refers to the direction perpendicular to the inverted arch formwork, and the transverse direction refers to the direction parallel to the inverted arch formwork. Multiple different scales can be set on the longitudinal adjusting member 2 and the transverse adjusting member 3. The adjustment positions corresponding to the multiple different scales can be adjusted more quickly to adjust the position of the adjusting member, thereby adjusting the thickness of the steel bar protective layer and the main reinforcement spacing.

[0024] In this embodiment, the longitudinal adjustment member 2 and the transverse adjustment member 3 both have an operable driving end 4 and a limiting end 5 for limiting the arch reinforcement and the main reinforcement to a set position; the driving end 4 can be screwed with a rotating handle to drive the limiting end 5 of the adjustment member, and the position of the adjustment member is adjusted by threaded cooperation between the adjustment member and the limiting member 6. The specific content of the threaded cooperation between the adjustment member and the limiting member 6 is explained below; the adjustment member can also be matched with the limiting member by other mechanical methods such as snaps, which will not be repeated here.

[0025] In this embodiment, the bracket is provided with two limit members 6 for limiting the longitudinal adjustment member 2 and the transverse adjustment member 3, so that the limit end 5 and the steel bar can be limited and movably cooperated; the limit member 6 is sleeved on the longitudinal adjustment member 2 and the transverse adjustment member 3, the longitudinal adjustment member 2 can be limited and movably connected to the bracket along a direction perpendicular to the inverted arch formwork 1, and the transverse adjustment member 3 can be limited and movably connected to the bracket along a direction parallel to the inverted arch formwork 1.

[0026] In this embodiment, the longitudinal adjustment member 2 and the transverse adjustment member 3 both have an active section 7 connecting the driving end 4 and the limiting end 5, and the active section 7 is sleeved with the limiting member 6. The limiting member 6 cooperates with the active section 7 to limit the adjustment member; the limiting member 6 and the adjustment member can be connected by threads or other mechanical connection methods, which will not be repeated here.

[0027] In this embodiment, the bracket at least includes two legs 8 fixed at an angle on the inverted arch formwork 1, and the two legs 8 are arranged in an "eight" shape; only the structure of two legs 8 is shown in this scheme, but in actual use, the number of legs 8 can be increased or decreased as appropriate according to the construction conditions on site. Since the layout space of the inverted arch formwork 1 at the tunnel construction site is limited, the two legs 8 are supported and connected to the limiter 6 in an "eight" shape, which can simplify the support structure to the maximum within the limited space and maximize the supporting capacity. The structure is simple, and the force received by the legs 8 can be dispersed downward along the legs 8 to the inverted arch formwork 1. The legs 8 are connected to the inverted arch formwork 1 through gaskets 9. The legs 8 and the gaskets 9 can be connected by bolts or other mechanical connection methods, which will not be repeated here. Adding a connection method between the legs 8 and the gaskets 9 can further improve the connection reliability of the gaskets 9 and the inverted arch formwork 1.

[0028] In this embodiment, a limit piece of the longitudinal adjustment piece 2 is set at the top of the two supporting feet 8 in an "eight" shape, and a limit piece of the transverse adjustment piece 3 is set in the middle of the supporting feet; the longitudinal adjustment piece 2 and the transverse adjustment piece 3 are staggered and arranged on the bracket to ensure that the longitudinal adjustment piece 2 and the transverse adjustment piece 3 will not interfere with each other during use.

[0029] In this embodiment, the stopper 6 is provided with an internal thread, and the movable section 7 is a screw with an external thread, and the external thread of the screw is adapted to the internal thread of the stopper 6; the driving end 4 and the stopper end 5 are respectively located at the axial ends of the screw. Figure 1 As shown, the bottom end of the screw extends outward in a direction perpendicular to the axis of the screw to form a driving end 5. The driving end 5 is of a structure that is easy to screw manually, which can improve the smoothness of the screw rotation drive and is conducive to the screw rotation drive. The limiter 6 is a circular ring structure fixedly connected to the top of the two legs 1. The screw cooperates with the limiter 6 in a manner of being inserted into the screw hole, and the driving end 4 and the limiting end 5 are respectively located at the axial ends of the screw, which is conducive to the adjustment of the steel bar. Due to the cooperation between the thread and the screw, the torque generated by screwing the driving end 4 is converted into a thrust for pushing the steel bar, and a larger thrust can be generated with a smaller torque, which can save the labor intensity of on-site construction workers and improve the rationality and practicality of the use of the overall device.

[0030] In this embodiment, the movement direction of the screw of the longitudinal adjustment member is perpendicular to the inverted arch template 1, and the movement direction of the screw of the transverse adjustment member is parallel to the inverted arch template 1. The driving end 4 and the limiting end 5 are respectively located at the axial ends of the screw; in this scheme, multiple groups of tunnel inverted arch steel bars and main reinforcement limiting devices are arranged on the inverted arch template 1, so that the steel bars form a protective layer, the spacing between adjacent steel bars can be strictly controlled, and the phenomenon of displacement and deviation will not occur during the binding and concrete pouring of the steel bars at the construction site. By adjusting the telescopic length by screwing the screw, the thickness of the protective layer of the steel bars can be adjusted, and the application range is wide, which solves the problem of the thickness of the protective layer of the existing inverted arch top steel bars. In addition, by adopting this scheme, the precise positioning of the spacing of the main steel bars can be achieved through the transverse adjustment member 3. Since the material is ordinary, it can be made at the construction site, the manufacturing method is simple and the operation is convenient, which greatly improves the qualified rate of the protective layer of the tunnel inverted arch steel bars and prevents the spacing of the main bars from being offset; not only can the problem of the difficult control of the thickness of the protective layer of the inverted arch steel bars be solved, but also the precise positioning of the spacing of the main steel bars can be achieved, and the problem of insufficient protective layer of the steel bars can be solved from the source, and the operation is flexible and the application range is wide.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A tunnel invert reinforcement and main reinforcement limiting device, characterized in that: It comprises an adjusting member and a bracket, wherein the bracket is fixed to the inverted arch formwork, and the adjusting member is arranged on the bracket and can be operated at an adjusting position, and the inverted arch reinforcement and the main reinforcement are limited to a set position by adjusting the position of the adjusting member and by the limiting end of the adjusting member; The adjusting member includes a longitudinal adjusting member and a transverse adjusting member, wherein the longitudinal adjusting member is used to limit the set position of the inverted arch reinforcement, thereby adjusting the thickness of the reinforcement protective layer, and the transverse adjusting member is used to limit the set position of the main reinforcement, thereby adjusting the main reinforcement spacing; The longitudinal adjustment member and the transverse adjustment member both have an operable driving end and a limiting end for limiting the inverted arch reinforcement and the main reinforcement to a set position; The bracket is provided with two limiting pieces for limiting the longitudinal adjusting piece and the transverse adjusting piece, so that the limiting end and the steel bar can be movably matched in a limited manner.

2. The tunnel invert reinforcement and main reinforcement limiting device according to claim 1 is characterized in that: The longitudinal adjustment member can be movably connected to the bracket in a limited position along a direction perpendicular to the inverted arch template, and the transverse adjustment member can be movably connected to the bracket in a limited position along a direction parallel to the inverted arch template.

3. The tunnel invert reinforcement and main reinforcement limiting device according to claim 1 is characterized in that: The longitudinal adjustment member and the transverse adjustment member both have a movable section connecting the driving end and the limiting end, the movable section is sleeved with the limiting member, and the limiting member cooperates with the movable section to limit the adjustment member.

4. The tunnel invert reinforcement and main reinforcement limiting device according to claim 1, characterized in that: The support comprises at least two supporting legs fixed at an angle on the inverted arch formwork, and the two supporting legs are arranged in an "eight" shape.

5. The tunnel invert reinforcement and main reinforcement limiting device according to claim 4 is characterized in that: The top of the two legs in an "eight" shape is provided with a limit piece of the longitudinal adjustment piece, and the middle of the legs is provided with a limit piece of the transverse adjustment piece.

6. The tunnel invert reinforcement and main reinforcement limiting device according to claim 3 is characterized in that: The limiting member is provided with an internal thread, and the movable section is a screw rod with an external thread, and the external thread of the screw rod is matched with the internal thread of the limiting member.

7. The tunnel invert reinforcement and main reinforcement limiting device according to claim 3 is characterized in that: The moving direction of the screw of the longitudinal adjustment member is perpendicular to the inverted arch formwork, the moving direction of the screw of the transverse adjustment member is parallel to the inverted arch formwork, and the driving end and the limiting end are respectively located at the axial ends of the screw.

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