Binding and positioning device for concrete cross brace reinforcing steel bars of open cut tunnel

Abstract

The utility model discloses an open cut tunnel concrete cross arm steel bar binding and positioning device. The four supporting frames are all perpendicular to the ground plane. The two stress cross braces are parallel to each other, one stress cross brace is vertically arranged between the two supporting frames, and the other stress cross brace is vertically arranged between the other two supporting frames; the two first stress rods are arranged at intervals in the length direction of the stress cross braces, and the first stress rods are vertically arranged between the two stress cross braces; the four hydraulic systems are arranged on the supporting frames correspondingly. The two second stress rods are arranged in parallel with the first stress rod, one second stress rod is arranged above the two hydraulic systems, the other second stress rod is arranged on the tops of the other two hydraulic systems, and the two second stress rods are configured to unload force from the first stress rod after steel bars are bound. Therefore, by means of the device, constructors can conveniently adjust the distance and the angle between the reinforcing meshes, the reinforcing meshes can be bound one by one, and the bound reinforcing meshes are free of dead angles.

Description

Technical Field

[0001] This application relates to the technical field of open-cut tunnel construction, and in particular to a positioning device for binding the steel bars of the concrete cross braces of an open-cut tunnel. Background Art

[0002] The concrete cross braces of an open-cut tunnel refer to the concrete support structures arranged on both sides of the tunnel during the construction of an open-cut tunnel to ensure the stability and safety of the tunnel structure. The main function of the concrete cross braces is to bear the earth pressure and groundwater pressure generated during the tunnel excavation process, preventing the tunnel structure from deforming and collapsing. At the same time, the concrete cross braces can also improve the stress state around the tunnel and enhance the stability of the surrounding rock. The binding of the steel bars of the concrete cross braces of an open-cut tunnel is an important link in strengthening the concrete cross brace structure during the construction of an open-cut tunnel. The quality of the steel bar binding is directly related to the strength and stability of the concrete cross braces and has an important impact on the stability and safety of the tunnel structure.

[0003] Currently, the construction standards have increasingly strict requirements for the quality of project construction. Using positioning steel bars to position the steel bars to be bound is an indispensable construction process in the existing technology of binding the steel bars of the concrete cross braces of an open-cut tunnel. However, using positioning steel bars to position the steel bars to be bound has the following technical problems during the construction process: it is very difficult for construction workers to adjust the spacing and angle of the steel bar mesh during the binding process, and there will be many dead corners, thus not meeting the construction standards; when using positioning steel bars to position the steel bars to be bound, the positioning steel bars will bear the weight of other bound steel bars, often causing deformation of the positioning steel bars and affecting the quality of the steel bar binding. Summary of the Utility Model

[0004] The embodiments of this application provide a positioning device for binding the steel bars of the concrete cross braces of an open-cut tunnel, solving the technical problems of long construction period, potential safety hazards to construction workers, and ineffective guarantee of the quality of the steel bar binding in the existing technology.

[0005] The embodiment of the present application provides an open-cut tunnel concrete cross strut steel bar binding and positioning device, which includes four support frames, at least two stress cross struts, at least two first stress bars, at least two second stress bars and four hydraulic systems; the four support frames are all perpendicular to the ground plane, and their projections on the ground plane are in a quadrilateral structure; at least two of the stress cross struts are parallel to each other, one of the stress cross struts is vertically arranged between two of the support frames, and the other stress cross strut is vertically arranged between the remaining two support frames; at least two of the first stress bars are arranged at intervals along the length direction of the stress cross strut, and the first stress bar is vertically arranged between the two stress cross struts for hanging the steel bar mesh; the four hydraulic systems are respectively arranged on each support frame and face one side of the steel bar mesh; at least two of the second stress bars are respectively arranged parallel to the first stress bar, one of the second stress bars is arranged above two of the hydraulic systems, and the other second stress bar is arranged on the tops of the remaining two hydraulic systems. At least two of the second stress bars are configured to unload force on the first stress bar after the steel bar mesh is bound.

[0006] In a possible implementation manner, the hydraulic system includes a hydraulic support base and a jack; the hydraulic support base is arranged on the support frame and faces one side of the steel bar mesh; the jack is fixedly arranged on the top of the hydraulic support base; the second stress bar is arranged on the top of the jack.

[0007] In a possible implementation manner, the support frame includes: a support seat; a column arranged on the top of the support seat; the hydraulic system is arranged on the column; the first stress bar is vertically arranged on the column.

[0008] In a possible implementation manner, the cross section of the support seat is triangular or trapezoidal.

[0009] In a possible implementation manner, the column includes an upper column body, a lower column body and a fastener; at least one first fixing hole is arranged on the upper column body; a plurality of second fixing holes are arranged on the lower column body and are spaced along the height direction of the lower column body, and the second fixing holes correspond to the first fixing holes; the lower column body is sleeved on the inner wall of the upper column body, and the lower column body is slidably connected to the upper column body; the upper column body and the lower column body are fixedly connected by the first fixing hole and the second fixing hole with the fastener; the upper column body is provided with the stress cross strut and the hydraulic system; the lower column body is arranged on the top of the support seat.

[0010] In a possible implementation manner, it further includes a plurality of fixed connecting rods; the plurality of fixed connecting rods are respectively arranged on each support frame.

[0011] In a possible implementation, the fixed connecting rod member is a back rib angle steel.

[0012] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects:

[0013] In the embodiments of the present application, four support frames and at least two stress-bearing cross braces are adopted. The first stress-bearing rod reinforcing mesh passes through the reinforcing mesh, and the reinforcing mesh is suspended, and then steel bar binding is carried out. First, the first stress-bearing rod has the function of guiding and positioning the reinforcing mesh. Secondly, during the binding process, each reinforcing mesh can move freely on the first stress-bearing rod, which is convenient for construction workers to adjust the spacing and angle between the reinforcing meshes, and the reinforcing meshes can also be bound one by one, so that there are no dead corners in the bound reinforcing mesh. Secondly, four hydraulic systems and the second stress-bearing rod are used to unload the force on the first stress-bearing rod, and the second stress-bearing rod is used to temporarily support the bound reinforcing mesh. During this process, formwork is supported under the bound reinforcing mesh and cushions are placed. Finally, the gravity of the bound steel bars is unloaded onto the cushions through the cooperation of the four hydraulic systems and the second stress-bearing rod. Since there is no participation of positioning steel bars in the whole process, the positioning steel bars are avoided from being deformed due to load.

[0014] In summary, the embodiments of the present application not only reduce the construction procedures, but also improve the quality requirements for the binding of steel bars, making the project quality more in line with the construction standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments of the present application or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a structural schematic diagram of an open-cut tunnel concrete cross brace steel bar binding and positioning device provided by the embodiments of the present application;

[0017] Figure 2 It is a left view of an open-cut tunnel concrete cross brace steel bar binding and positioning device provided by the embodiments of the present application;

[0018] Figure 3 It is a structural schematic diagram of a column provided by the embodiments of the present application.

[0019] Reference numerals: 1 - support frame; 11 - support base; 12 - column; 121 - upper column body; 1211 - first fixing hole; 122 - lower column body; 1221 - second fixing hole; 2 - stress cross brace; 3 - first stress rod; 4 - hydraulic system; 41 - hydraulic support base; 42 - jack; 5 - fixed connecting member; 6 - second stress rod. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0021] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. The terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0022] As Figure 1 and Figure 2As shown in the figure, the open-cut tunnel concrete cross strut steel bar binding and positioning device provided by the embodiment of the present application includes four support frames 1, at least two stress cross struts 2, at least two first stress bars 3, at least two second stress bars 6, and four hydraulic systems 4. The four support frames 1 are all perpendicular to the ground plane, and their projections on the ground plane are in a quadrilateral structure. At least two stress cross struts 2 are parallel to each other, one stress cross strut 2 is vertically arranged between two of the support frames 1, and the other stress cross strut 2 is vertically arranged between the remaining two support frames 1. At least two first stress bars 3 are arranged at intervals along the length direction of the stress cross strut 2, and the first stress bars 3 are vertically arranged between the two stress cross struts 2 for hanging the steel bar mesh. The four hydraulic systems 4 are respectively arranged on each support frame 1 and face the side of the steel bar mesh. At least two second stress bars 6 are respectively arranged in parallel with the first stress bars 3, one second stress bar 6 is arranged above two of the hydraulic systems 4, and the other second stress bar 6 is arranged on the tops of the remaining two hydraulic systems 4. At least two second stress bars 6 are configured to unload the force on the first stress bars 3 after the steel bar mesh is bound.

[0023] In the embodiment of the present application, by adopting four support frames 1 and at least two stress cross struts 2, in cooperation with the first stress bars 3, the steel bar mesh passes through the steel bar mesh and the steel bar mesh is suspended, and then the steel bars are bound. First, the first stress bars 3 have the function of guiding and positioning the steel bar mesh; secondly, during the binding process, each steel bar mesh can move freely on the first stress bars 3, which is convenient for construction workers to adjust the spacing and angle between the steel bar meshes, and the steel bar meshes can also be bound one by one, so that there are no dead corners in the bound steel bar mesh. Secondly, four hydraulic systems 4 and the second stress bars 6 are used to unload the force on the first stress bars 3, and the bound steel bar mesh is temporarily supported by the second stress bars 6. During this process, formwork is supported under the bound steel bar mesh and cushions are placed. Finally, through the cooperation of the four hydraulic systems 4 and the second stress bars 6, the gravity of the bound steel bars is unloaded onto the cushions. Since there is no participation of positioning steel bars in the whole process, the positioning steel bars are prevented from deforming due to the load.

[0024] As Figure 1 and Figure 2 As shown in the figure, for the open-cut tunnel concrete cross strut steel bar binding and positioning device provided by the embodiment of the present application, the hydraulic system 4 includes a hydraulic support base 41 and a jack 42. The hydraulic support base 41 is arranged on the support frame 1 and faces the side of the steel bar mesh. A jack 42 is fixedly arranged on the top of the hydraulic support base 41. The second stress bar 6 is arranged on the top of the jack 42.

[0025] In the embodiment of the present application, the hydraulic system 4 includes a hydraulic support base 41 and a jack 42. The hydraulic support base 41 is a square steel welded to the support frame 1. During use, the jack 42 can drive the second force-bearing rod 6 to lift the completed steel bar mesh, helping the first force-bearing rod 3 to unload the force, and then the first force-bearing rod 3 is removed; and through the temporary support effect, a cushion layer is arranged under the completed steel bar mesh.

[0026] As Figure 1 , Figure 2 and Figure 3 shown, for the open-cut tunnel concrete cross-brace steel bar binding and positioning device provided by the embodiment of the present application, the support frame 1 includes: a support base 11. A column 12 is arranged on the top of the support base 11. The hydraulic system 4 is arranged on the column 12. The first force-bearing rod 3 is vertically arranged on the column 12.

[0027] In the embodiment of the present application, to ensure the stability of the support frame 1 and ensure construction safety, the stability of the support frame 1 is enhanced by arranging the column 12 of the support frame 1 on the support base 11.

[0028] For the open-cut tunnel concrete cross-brace steel bar binding and positioning device provided by the embodiment of the present application, the cross-section of the support base 11 is triangular or trapezoidal.

[0029] In the embodiment of the present application, the cross-section of the support base 11 is triangular or trapezoidal, which is not only simple in structure and convenient for processing, but also has stability, improving the stability of the entire open-cut tunnel concrete cross-brace steel bar binding and positioning device.

[0030] As Figure 3 shown, for the open-cut tunnel concrete cross-brace steel bar binding and positioning device provided by the embodiment of the present application, the column 12 includes an upper column body 121, a lower column body 122 and a fastener. The upper column body 121 is provided with at least one first fixing hole 1211. The lower column body 122 is provided with a plurality of second fixing holes 1221, which are spaced along the height direction of the lower column body 122, and the second fixing holes 1221 correspond to the first fixing holes 1211. The lower column body 122 is sleeved on the inner wall of the upper column body 121, and the lower column body 122 is slidably connected to the upper column body 121. The upper column body 121 and the lower column body 122 are fixedly connected by fasteners through the first fixing holes 1211 and the second fixing holes 1221. The upper column body 121 is provided with a force-bearing cross-brace 2 and a hydraulic system 4. The lower column body 122 is arranged on the top of the support base 11.

[0031] In the embodiment of the present application, the column 12 is divided into an upper column body 121 and a lower column body 122. Two bolt holes are provided on the upper column body 121, and several bolt holes corresponding to the two bolt holes on the upper column body 121 are provided on the lower column body 122. The upper column body 121 and the lower column body 122 are fixedly connected by two bolts through the bolt holes. To ensure the stable connection between the upper column body 121 and the lower column body 122, this technical feature enables the height of the column 12 to be adjusted, so that the support frame 1 is applicable to application environments of different heights.

[0032] As Figure 1 , Figure 2 and Figure 3 shown, the open-cut tunnel concrete cross brace steel bar binding and positioning device provided by the embodiment of the present application further includes a plurality of fixed connecting members 5. The plurality of fixed connecting members 5 are respectively arranged on each support frame 1.

[0033] In the embodiment of the present application, by arranging the fixed connecting members 5 on each support frame 1, the support frames 1 are fixedly connected together, enhancing the integrity and safety of the open-cut tunnel concrete cross brace steel bar binding and positioning device.

[0034] As Figure 1 , Figure 2 and Figure 3 shown, for the open-cut tunnel concrete cross brace steel bar binding and positioning device provided by the embodiment of the present application, the fixed connecting member 5 is a back rib angle steel.

[0035] In the embodiment of the present application, the back rib angle steel is used as the fixed connecting member 5 because the angle steel has strong bending resistance and a simple structure. It makes the installation of the steel bar binding and positioning device simple and has strong integrity.

[0036] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, reference can be made to each other. The key points of each embodiment are the differences from other embodiments.

[0037] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application.

Claims

1. An open-cut tunnel concrete cross strut steel bar binding and positioning device, characterized in that It includes four support frames (1), at least two stress-bearing cross braces (2), at least two first stress-bearing rods (3), at least two second stress-bearing rods (6) and four hydraulic systems (4); The four support frames (1) are all perpendicular to the ground plane, and their projections on the ground plane are in a quadrilateral structure; At least two of the stress-bearing cross braces (2) are parallel to each other. One of the stress-bearing cross braces (2) is vertically arranged between two of the support frames (1), and the other stress-bearing cross brace (2) is vertically arranged between the remaining two support frames (1); At least two of the first stress-bearing rods (3) are arranged at intervals along the length direction of the stress-bearing cross brace (2). The first stress-bearing rod (3) is vertically arranged between the two stress-bearing cross braces (2) and is used for hanging the steel mesh; The four hydraulic systems (4) are respectively arranged on each support frame (1) and face the side of the steel mesh; At least two of the second stress-bearing rods (6) are respectively arranged in parallel with the first stress-bearing rod (3); One of the second stress-bearing rods (6) is arranged above two of the hydraulic systems (4), and the other second stress-bearing rod (6) is arranged on the tops of the remaining two hydraulic systems (4). At least two of the second stress-bearing rods (6) are configured to unload force on the first stress-bearing rod (3) after the steel mesh is tied up; 2. The open-cut tunnel concrete cross strut steel bar binding and positioning device according to claim 1, wherein, The hydraulic system (4) includes a hydraulic support base (41) and a jack (42); The hydraulic support base (41) is arranged on the support frame (1) and faces the side of the steel mesh; The jack (42) is fixedly arranged on the top of the hydraulic support base (41); The second stress-bearing rod (6) is arranged on the top of the jack (42); 3. The open-cut tunnel concrete cross strut steel bar binding and positioning device according to any one of claims 1 or 2, characterized in that The support frame (1) includes: A support seat (11); A column (12) arranged on the top of the support seat (11); The hydraulic system (4) is arranged on the column (12); The first stress-bearing rod (3) is vertically arranged on the column (12); 4. The open-cut tunnel concrete cross strut steel bar binding and positioning device according to claim 3, wherein, The cross section of the support seat (11) is triangular or trapezoidal; 5. The open-cut tunnel concrete cross strut steel bar binding and positioning device according to claim 3, characterized in that, The column (12) includes an upper column body (121), a lower column body (122) and a fastener; The upper column body (121) is provided with at least one first fixing hole (1211); The lower column body (122) is provided with a plurality of second fixing holes (1221), which are distributed at intervals along the height direction of the lower column body (122), and the second fixing holes (1221) correspond to the first fixing holes (1211); The lower column body (122) is sleeved on the inner wall of the upper column body (121), and the lower column body (122) is slidably connected to the upper column body (121); The upper column body (121) and the lower column body (122) are fixedly connected by a fastener through the first fixing hole (1211) and the second fixing hole (1221); The upper column body (121) is provided with the stress-bearing cross brace (2) and is provided with the hydraulic system (4); The lower column body (122) is arranged on the top of the support seat (11); 6. The open-cut tunnel concrete cross strut steel bar binding and positioning device according to claim 1, characterized in that, It also includes a plurality of fixed connecting members (5); A plurality of the fixed connecting rod members (5) are respectively arranged on each of the support frames (1).

7. The open-cut tunnel concrete cross strut steel bar binding and positioning device according to claim 6, characterized in that, The fixed connecting rod member (5) is a back rib angle steel.

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