A reaction frame

Abstract

The present invention discloses a reaction frame, which belongs to the field of building construction technology, and includes a first column, a second column, a bottom arc-shaped guide platform and a support ring. The first column is arranged in the vertical direction and is a reinforced concrete structure, and a corbel is arranged on the side of the first column; the second column is arranged in parallel and spaced relation with the first column and is a reinforced concrete structure, and a plate support is arranged on the side of the second column; the bottom arc-shaped guide platform is a plain concrete structure, and an arc-shaped concave surface is arranged on the upper surface of the bottom arc-shaped guide platform, the first column passes through the bottom arc-shaped guide platform in the vertical direction and is located on one side of the bottom arc-shaped guide platform, and the second column is connected to the other side of the bottom arc-shaped guide platform; the lower surface of the support ring is arranged in contact with the arc-shaped concave surface, and the support ring is clamped between the first column and the second column; the support ring is configured to be connected to the negative ring segment. The present invention has a low cost.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a reaction frame. Background Art

[0002] In shield construction, the reaction frame is an indispensable device that provides reaction force for the shield machine during the initial start of the shield.

[0003] In the prior art, the reaction frame is usually made of steel structure. However, the starting thrust of a 15-meter-diameter shield machine in a composite stratum is about 6,000 tons. If a steel structure reaction frame is used, due to the low rigidity of the steel structure, in order to control deformation, the structure size of the reaction frame is relatively large, the weight reaches 350 tons, and the cost is expensive. Summary of the invention

[0004] The object of the present invention is to provide a reaction frame to solve the technical problem in the prior art that the reaction frame is too large in size and adopts a steel structure, which leads to high cost.

[0005] As conceived above, the technical solution adopted by the present invention is:

[0006] A reaction frame, comprising:

[0007] The first column is arranged in the vertical direction and is a reinforced concrete structure, and a corbel is arranged on the side of the first column;

[0008] A second column is arranged parallel to and spaced from the first column, and is a reinforced concrete structure, and a plate support is arranged on the side of the second column;

[0009] The bottom arc-shaped guide platform is a plain concrete structure, the upper surface of the bottom arc-shaped guide platform is provided with an arc-shaped concave surface, the first column passes through the bottom arc-shaped guide platform in the vertical direction and is located on one side of the bottom arc-shaped guide platform, and the second column is connected to the other side of the bottom arc-shaped guide platform;

[0010] A support ring, the lower surface of which is fitted and connected to the arc-shaped concave surface, and the support ring is sandwiched between the first column and the second column, and the opposite sides of the support ring are respectively connected to the first column and the second column;

[0011] The reaction frame is configured as follows: the lower end of the first column is connected to the structural bottom plate of the launching well, the upper end of the first column is connected to the middle plate of the launching well, the lower end of the second column is connected to the structural bottom plate of the launching well, the upper end of the second column is connected to the middle plate of the launching well, the corbel and the plate support are both connected to the side wall of the launching well, and the support ring is configured to be connected to the negative ring segment.

[0012] Optionally, the reaction frame further includes a top crossbeam, one end of which is connected to the first column, and the other end of which is connected to the second column, the top crossbeam is configured to be connected to the middle plate, and the top of the support ring is connected to the top crossbeam.

[0013] Optionally, one end of the top cross beam is connected to the first column via a first oblique beam, and the other end is connected to the second column via a second oblique beam.

[0014] Optionally, both ends of the first oblique beam are haunch beams, and both ends of the second oblique beam are haunch beams.

[0015] Optionally, the reaction frame further includes:

[0016] a third oblique beam, the upper end of which is connected to the first column, the angle between the third oblique beam and the first column is an acute angle and the third oblique beam is located between the first column and the second column, and the lower end of the third oblique beam is configured to be connected to the structural bottom plate;

[0017] A fourth oblique beam, the upper end of which is connected to the first column, the angle between the fourth oblique beam and the second column is an acute angle and the fourth oblique beam is located between the first column and the second column, and the lower end of the fourth oblique beam is configured to be connected to the structural base plate.

[0018] Optionally, a plurality of square embedded steel plates are embedded in the support ring at equal intervals along the circumference of the support ring, a steel pipe is welded to the end face of each of the square embedded steel plates, and the steel pipe is configured to be connected to the negative ring segment.

[0019] Optionally, twenty-eight square embedded steel plates are embedded in the support ring at equal intervals.

[0020] Optionally, the plate support is a reinforced concrete structure.

[0021] Optionally, the corbel is a reinforced concrete structure.

[0022] Optionally, the thickness of the steel bar protective layer of the reinforced concrete structure is 30 cm.

[0023] When in use, the reaction frame proposed by the present invention is installed at the position of the starting shaft, the first column is connected to a side wall of the starting shaft through a corbel, and the second column is connected to the other side wall of the starting shaft through a plate support. The corbel is connected to a side wall of the starting shaft to provide a reaction force to the first column, thereby providing a reaction force to one side of the support ring; the plate support is connected to the other side wall of the starting shaft to provide a reaction force to the second column, thereby providing a reaction force to the other side of the support ring; the bottom arc guide platform provides a reaction force for the bottom of the support ring, thereby ensuring that the support ring can be connected to the shield jack through the negative ring segment, thereby ensuring that the support ring can stably provide a forward propulsion force to the shield machine. At the same time, in this embodiment, the first column and the second column of the reaction frame are both reinforced concrete structures, and the bottom arc guide platform is a plain concrete structure, which has a lower manufacturing cost than a steel structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0025] Figure 1 is a schematic diagram of a reaction frame provided by an embodiment of the present invention;

[0026] Figure 2 is a front elevation view of the reaction frame provided by an embodiment of the present invention when it is in the launching well;

[0027] Figure 3 It is a side elevation view of the reaction frame provided by an embodiment of the present invention when it is in the launching well.

[0028] In the figure:

[0029] 1. First column; 11. Corbel;

[0030] 2. Second column; 21. Plate support;

[0031] 3. Bottom curved guide platform;

[0032] 4. Support ring; 41. Steel pipe;

[0033] 5. top cross beam; 51. first oblique beam; 52. second oblique beam;

[0034] 61. the third oblique beam; 62. the fourth oblique beam;

[0035] 9. Starting well; 91. Structural bottom plate; 92. Middle plate. DETAILED DESCRIPTION

[0036] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, not all.

[0037] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] See also Figure 1-Figure 3 This embodiment provides a reaction frame, which is installed in the starting shaft 9 and can be applied to a 15-meter large-diameter shield machine with a low cost.

[0040] Specifically, in this embodiment, the launch shaft 9 includes two spaced and oppositely arranged side walls, a structural bottom plate 91 and a middle plate 92. The two ends of the structural bottom plate 91 are respectively connected to the lower ends of the two side walls, and the middle plate 92 is arranged above the structural bottom plate 91 in parallel and spaced.

[0041] Specifically, in this embodiment, the reaction frame includes a first column 1 , a second column 2 , a bottom arc-shaped guide platform 3 and a support ring 4 .

[0042] The first column 1 is arranged along the vertical direction and is a reinforced concrete structure. A corbel 11 is arranged on the side of the first column 1 .

[0043] The second column 2 is arranged in parallel with the first column 1 and is spaced apart from each other. The second column 2 is a reinforced concrete structure. A plate support 21 is arranged on the side of the second column 2 .

[0044] The bottom arc guide platform 3 is a plain concrete structure, and an arc-shaped concave surface is arranged on the upper surface of the bottom arc guide platform 3 . The first column 1 passes through the bottom arc guide platform 3 in the vertical direction and is located on one side of the bottom arc guide platform 3 , and the second column 2 is connected to the other side of the bottom arc guide platform 3 .

[0045] The lower surface of the support ring 4 is fitted and connected with the arc-shaped concave surface, and the support ring 4 is sandwiched between the first column 1 and the second column 2. The opposite sides of the support ring 4 are connected with the first column 1 and the second column 2 respectively.

[0046] The reaction frame is configured as follows: the lower end of the first column 1 is connected to the structural bottom plate 91 of the starting shaft 9, the upper end of the first column 1 is connected to the middle plate 92 of the starting shaft 9, the lower end of the second column 2 is connected to the structural bottom plate 91 of the starting shaft 9, the upper end of the second column 2 is connected to the middle plate 92 of the starting shaft 9, the corbel 11 and the plate support 21 are both connected to the side wall of the starting shaft 9, and the support ring 4 is configured to be connected to the shield jack through the negative ring segment.

[0047] When in use, the reaction frame provided in this embodiment is installed at the position of the starting shaft 9, the first column 1 is connected to one side wall of the starting shaft 9 through the corbel 11, and the second column 2 is connected to the other side wall of the starting shaft 9 through the plate support 21. The corbel 11 is connected to one side wall of the starting shaft 9 to provide a reaction force to the first column 1, thereby providing a reaction force to one side of the support ring 4; the plate support 21 is connected to the other side wall of the starting shaft 9 to provide a reaction force to the second column 2, thereby providing a reaction force to the other side of the support ring 4; the bottom arc guide platform 3 provides a reaction force for the bottom of the support ring 4, thereby ensuring that the support ring 4 can be connected to the shield jack through the negative ring segment, thereby ensuring that the support ring 4 can stably provide a forward propulsion force to the shield machine. At the same time, in this embodiment, the first column 1 and the second column 2 of the reaction frame are both reinforced concrete structures, and the bottom arc guide platform 3 is a plain concrete structure, which has a lower manufacturing cost than a steel structure.

[0048] Preferably, in this embodiment, the plate support 21 is a reinforced concrete structure. The corbel 11 is a reinforced concrete structure.

[0049] Specifically, in this embodiment, the thickness of the plate support 21 is 500 mm, and a double-layer bidirectional φ16@150 steel mesh is configured, and the anchoring length of the steel bars to the bottom plate, side wall, and beam is 35 d.

[0050] Specifically, in this embodiment, the reinforcement of the corbel 11 in the force-bearing direction is φ28@150, and the reinforcement in other directions is φ16@150.

[0051] Furthermore, a φ16@300 bidirectional dowel bar is arranged at a position 5 meters behind the reaction frame, and the height of the dowel bar is the same as the height of the bottom arc guide platform 3.

[0052] Optionally, in this embodiment, C35 concrete is used as concrete, and the thickness of the steel bar protective layer of all reinforced concrete structures is 30 cm.

[0053] Furthermore, in this embodiment, the reaction frame also includes a top crossbeam 5, one end of the top crossbeam 5 is connected to the first column 1, and the other end is connected to the second column 2, the top crossbeam 5 is configured to be connected to the middle plate 92, and the top of the support ring 4 is connected to the top crossbeam 5.

[0054] Specifically, one end of the top cross beam 5 is connected to the first column 1 through the first oblique beam 51, and the other end is connected to the second column 2 through the second oblique beam 52. Preferably, both ends of the first oblique beam 51 are axillary beams, and both ends of the second oblique beam 52 are axillary beams.

[0055] Specifically, in this embodiment, five steel bars with a diameter of 25 mm are arranged above and below the corners of the first inclined beam 51 and the second inclined beam 52, seven waist bars with a diameter of 14 mm are arranged on the side, and open stirrups are arranged on the side and welded to the beam stirrups, and the steel bar anchorage length is 35d.

[0056] Furthermore, in this embodiment, the reaction frame also includes a third oblique beam 61 and a fourth oblique beam 62 .

[0057] The upper end of the third oblique beam 61 is connected to the first column 1 , the angle between the third oblique beam 61 and the first column 1 is an acute angle and the third oblique beam 61 is located between the first column 1 and the second column 2 , and the lower end of the third oblique beam 61 is configured to be connected to the structural base plate 91 .

[0058] The upper end of the fourth oblique beam 62 is connected to the first column 1 , the angle between the fourth oblique beam 62 and the second column 2 is an acute angle and the fourth oblique beam 62 is located between the first column 1 and the second column 2 , and the lower end of the fourth oblique beam 62 is configured to be connected to the structural base plate 91 .

[0059] By providing the first oblique beam 51 , the second oblique beam 52 , the third oblique beam 61 and the fourth oblique beam 62 , the structural stability of the reaction frame is further improved.

[0060] Furthermore, in this embodiment, a plurality of square embedded steel plates are embedded in the support ring 4 at equal intervals along the circumference of the support ring 4 , and a steel pipe 41 is welded to the end face of each square embedded steel plate, and the steel pipe 41 is configured to be connected to the negative ring segment.

[0061] Specifically, in this embodiment, twenty-eight square embedded steel plates are equally spaced in the support ring 4, and the diameter of the square embedded steel plates is 55 cm. A steel pipe 41 with a diameter of 40 cm is welded to the end face of each square embedded steel plate, and the negative ring segment is connected to the reaction frame through the steel pipe 41. The 28 steel pipes 41 form 28 fulcrums corresponding to the shield jack.

[0062] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A reaction frame, characterized in that: include: A first column (1) is arranged in a vertical direction and is a reinforced concrete structure, wherein a corbel (11) is arranged on the side of the first column (1); A second column (2) is arranged in parallel with and spaced from the first column (1), and is a reinforced concrete structure, and a plate support (21) is arranged on the side of the second column (2); The bottom arc-shaped guide platform (3) is a plain concrete structure, the upper surface of the bottom arc-shaped guide platform (3) is provided with an arc-shaped concave surface, the first column (1) passes through the bottom arc-shaped guide platform (3) in a vertical direction and is located on one side of the bottom arc-shaped guide platform (3), and the second column (2) is connected to the other side of the bottom arc-shaped guide platform (3); A support ring (4), the lower surface of which is fitted and connected to the arc-shaped concave surface, and the support ring (4) is sandwiched between the first column (1) and the second column (2), and the opposite sides of the support ring (4) are respectively connected to the first column (1) and the second column (2); The reaction frame is configured as follows: the lower end of the first column (1) is connected to the structural bottom plate (91) of the launch shaft (9), the upper end of the first column (1) is connected to the middle plate (92) of the launch shaft (9), the lower end of the second column (2) is connected to the structural bottom plate (91) of the launch shaft (9), the upper end of the second column (2) is connected to the middle plate (92) of the launch shaft (9), the bracket (11) and the plate support (21) are both connected to the side wall of the launch shaft (9), and the support ring (4) is configured to be connected to the negative ring segment; The plate support (21) is a reinforced concrete structure; The corbel (11) is a reinforced concrete structure.

2. The reaction frame according to claim 1, characterized in that: The reaction frame further comprises a top crossbeam (5), one end of the top crossbeam (5) being connected to the first column (1), and the other end being connected to the second column (2), the top crossbeam (5) being configured to be connected to the middle plate (92), and the top of the support ring (4) being connected to the top crossbeam (5).

3. The reaction frame according to claim 2, characterized in that: One end of the top cross beam (5) is connected to the first upright column (1) via a first oblique beam (51), and the other end is connected to the second upright column (2) via a second oblique beam (52).

4. The reaction frame according to claim 3, characterized in that: Both ends of the first oblique beam (51) are haunch beams, and both ends of the second oblique beam (52) are haunch beams.

5. The reaction frame according to claim 1, characterized in that: The reaction frame also includes: a third oblique beam (61), the upper end of which is connected to the first column (1), the angle between the third oblique beam (61) and the first column (1) is an acute angle, and the third oblique beam (61) is located between the first column (1) and the second column (2), and the lower end of the third oblique beam (61) is configured to be connected to the structural bottom plate (91); A fourth oblique beam (62), the upper end of which is connected to the first column (1), the angle between the fourth oblique beam (62) and the second column (2) is an acute angle and the fourth oblique beam (62) is located between the first column (1) and the second column (2), and the lower end of the fourth oblique beam (62) is configured to be connected to the structural base plate (91).

6. The reaction frame according to any one of claims 1 to 5, characterized in that: A plurality of square embedded steel plates are embedded in the support ring (4) at equal intervals along the circumference of the support ring (4), a steel pipe (41) is welded to the end face of each of the square embedded steel plates, and the steel pipe (41) is configured to be connected to the negative ring segment.

7. The reaction frame according to claim 6, characterized in that: Twenty-eight square embedded steel plates are embedded in the support ring (4) at equal intervals.

8. The reaction frame according to any one of claims 1 to 5, characterized in that: The thickness of the steel bar protective layer of the reinforced concrete structure is 30 cm.

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