Starting reaction frame structure for tube push bench

Abstract

The utility model relates to a starting reaction frame structure for a tube push bench. The starting reaction frame structure comprises a foundation ground, a side wall is arranged on the foundation ground and used for supporting the jack; a plurality of inclined struts are further included. A plurality of anchoring parts are evenly distributed on the left side and the right side of the foundation ground in the tunneling direction of the pipe jacking machine. One end of the inclined strut is fixed to the side wall, the other end of the inclined strut is fixed to the anchoring part, and the inclined strut is used for pulling the side wall. The device has the advantages of simple structure, convenience in construction, space saving, cost reduction and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to an initial reaction frame structure for a pipe jacking machine. Background Art

[0002] Compared with shield machines, pipe jacking machines have the advantages of high flexibility, fast construction speed and low cost, so they are widely used in the construction of subway underground tunnels.

[0003] During the excavation process of the pipe jacking machine, it is usually pushed forward by a jack. In order to support the jack, a reaction frame needs to be built. At present, the conventional practice of the reaction frame is to build a back wall. In order to ensure that the bearing capacity of the back wall meets the design requirements, the foundation reinforcement or soil reinforcement treatment is carried out at the back wall position outside the structure to support the back wall to enhance the thrust of the jack. However, this structure causes the overall thickness to be large and occupies more space. In places where space is limited, it will restrict construction and even bring inconvenience to construction, thereby affecting the construction progress. Utility Model Content

[0004] To this end, the utility model provides an initial reaction frame structure for a pipe jacking machine, which mainly solves the technical problem that the reaction frame in the prior art adopts the method of applying foundation reinforcement or soil reinforcement treatment at the back wall position on the outer side of the structure, which occupies a large space and restricts construction in occasions with limited space, and even brings inconvenience to construction, thereby affecting the construction progress.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A starting reaction frame structure for a pipe jacking machine comprises a base ground; the base ground is provided with side walls for supporting a jack; and also comprises a plurality of diagonal braces; a plurality of anchors are evenly distributed on the left and right sides of the base ground along the excavation direction of the pipe jacking machine; one end of the diagonal brace is fixed to the side wall, and the other end is fixed to the anchor, for pulling the side wall.

[0007] Preferably, a steel plate is provided on the side of the side wall facing the pipe jacking machine, and the jack is arranged on the steel plate.

[0008] Preferably, a plurality of pre-embedded anchor bars are provided on the bottom surface of the anchor member; the pre-embedded anchor bars are pre-embedded in the foundation ground.

[0009] Preferably, a vertical pole is provided on the foundation ground on the left side of the anchor member close to the side of the pipe jacking machine; a cross bar is provided between the top of the vertical pole and the steel plate; and the diagonal brace crossing the cross bar is fixedly connected to the cross bar.

[0010] Preferably, the vertical poles are arranged vertically; and the horizontal poles are arranged horizontally.

[0011] Preferably, it also includes an oblique rod; one end of the oblique rod is connected to the top of the vertical rod, and the other end is inclined toward one side of the steel plate and connected to the basic ground; the oblique brace crossing the oblique rod is fixedly connected to the oblique rod.

[0012] Preferably, the angle between the inclined rod and the base ground is 45°.

[0013] The utility model has at least the following beneficial effects:

[0014] It is provided with a plurality of diagonal braces, and a plurality of anchors are evenly distributed on the left and right sides of the foundation ground along the excavation direction of the pipe jacking machine. One end of the diagonal brace is fixed on the side wall, and the other end is fixed on the anchor. The diagonal brace pulls the side wall without the need to cast reinforced concrete reinforcement beams, thus saving space. The diagonal brace can be reused, saving costs and avoiding material waste.

[0015] It can be seen that the starting reaction frame structure for a pipe jacking machine of the utility model has the advantages of simple structure, convenient construction, space saving, cost reduction, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly explain the prior art and the present invention, the following briefly introduces the drawings required for describing the prior art and the present invention. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other drawings can be derived from the provided drawings without creative work.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0018] Figure 1 It is a front cross-sectional view of an initial reaction frame structure for a pipe jacking machine according to the utility model;

[0019] Figure 2 It is a horizontal cross-sectional view of an initial reaction frame structure for a pipe jacking machine according to the utility model;

[0020] Figure 3 The utility model is an accessory of the initial reaction frame structure for the pipe jacking machine Figure 2 AA section view;

[0021] Description of reference numerals:

[0022] 1. Side wall; 2. Foundation ground; 3. Steel plate; 4. Diagonal brace; 5. Cross bar; 6. Vertical pole; 7. Diagonal rod; 8. Anchor; 9. Embedded anchor bar; 10. Jack. DETAILED DESCRIPTION

[0023] The present application is further described below in detail through specific embodiments in conjunction with the accompanying drawings.

[0024] In the description of this application: unless otherwise specified, the meaning of "plurality" is two or more. The terms "first", "second", "third", etc. in this application are intended to distinguish the objects referred to, and do not have special meanings in terms of technical connotations (for example, they should not be understood as emphasizing the importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0025] The terms such as "upper", "lower", "left", "right", "middle", etc. used in this application are usually used to facilitate intuitive understanding by comparing with the accompanying drawings, and are not absolute limitations on the positional relationship in the actual product. Without departing from the technical concept disclosed in this application, changes in these relative positional relationships should also be regarded as the scope of this application.

[0026] The utility model provides an initial reaction frame structure for a pipe jacking machine, such as Figures 1 to 3 As shown, it includes a foundation ground 2, and a side wall 1 is provided on the foundation ground 2. Both the foundation ground 2 and the side wall 1 are cast with reinforced concrete, and the side wall 1 is used to support the jack. In order to enhance the anti-thrust strength of the side wall 1, it also includes a plurality of diagonal braces 4. A plurality of anchors 8 are evenly distributed on the left and right sides of the foundation ground 2 along the excavation direction of the pipe jacking machine. One end of the diagonal brace 4 is fixed on the side wall 1, and the other end is fixed on the anchor 8. When the jack pushes the pipe jacking machine forward, the diagonal brace 4 pulls the side wall 1, thereby enhancing the anti-thrust strength of the side wall 1. It is not necessary to cast a reinforced concrete reinforcement beam on the side of the side wall 1 away from the jack, thereby reducing the overall structural thickness, saving space, and facilitating construction.

[0027] Preferably, in order to prevent the jack from damaging the side wall 1 and to disperse the thrust of the jack on the side wall 1 , a steel plate 3 is provided on the side of the side wall 1 facing the pipe jacking machine, and the jack is arranged on the steel plate 3 .

[0028] Preferably, in order to enhance the stability of the anchor 8 and withstand a greater tensile force from the diagonal brace 4 , a plurality of pre-embedded anchor bars 9 are provided on the bottom surface of the anchor 8 . When the foundation ground 2 is poured, the pre-embedded anchor bars 9 are first embedded in the foundation ground 2 .

[0029] Preferably, in order to enhance the overall strength of the structure of the present application, a vertical pole 6 is provided on the foundation ground 2 on the left side of the anchor 8 close to the side of the pipe jacking machine, a cross bar 5 is provided between the top of the vertical pole 6 and the steel plate 3, and the diagonal brace 4 crossing the cross bar 5 is fixedly connected to the cross bar 5, so that the multiple cross bars 5 are a whole, and the pulling force will be more evenly distributed on the side wall 1; preferably, the vertical pole 6 is vertically arranged and the cross bar 5 is horizontally arranged; further preferably, it also includes an oblique rod 7, one end of the oblique rod 7 is connected to the top of the vertical pole 6, and the other end is inclined toward one side of the steel plate 3 and connected to the foundation ground 2, the oblique brace 4 crossing the oblique rod 7 is fixedly connected to the oblique rod 7, and at the same time, the angle between the oblique rod 7 and the foundation ground 2 is 45°. Such a design makes the multiple cross bars 5 a whole, the pulling force is evenly distributed on the side wall 1, the pulling strength will be higher, and the overall stability will be higher.

[0030] During construction: first pour the reinforced concrete foundation ground and side walls, and at the same time pre-embed anchors in the foundation ground, and bury the pre-embedded anchor bars in the foundation ground; then fix the diagonal braces on the installed side walls and anchors in turn; then install the vertical poles and horizontal poles, and fix the diagonal braces and horizontal poles that cross the horizontal poles together; finally install the diagonal poles, and fix the diagonal braces and diagonal poles that cross the diagonal poles together. The construction is reduced, and does not require a large space, saving space.

[0031] The above is a relatively specific and detailed description of the present application through general description and specific embodiments. It should be understood that, based on the technical concept of the present application, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not deviate from the technical concept of the present application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the scope of protection of the claims of the present application.

Claims

1. A starting reaction frame structure for a pipe jacking machine, comprising a base ground (2); the base ground (2) is provided with a side wall (1) for supporting a jack, characterized in that: It also includes a plurality of diagonal braces (4); a plurality of anchors (8) are evenly distributed on the left and right sides of the foundation ground (2) along the excavation direction of the pipe jacking machine; one end of the diagonal brace (4) is fixed to the side wall (1), and the other end is fixed to the anchor (8), and is used to pull the side wall (1).

2. The starting reaction frame structure for a pipe jacking machine according to claim 1, characterized in that: A steel plate (3) is provided on the side of the side wall (1) facing the pipe jacking machine, and the jack is arranged on the steel plate (3).

3. The starting reaction frame structure for a pipe jacking machine according to claim 1, characterized in that: The bottom surface of the anchor member (8) is provided with a plurality of pre-buried anchor bars (9); the pre-buried anchor bars (9) are pre-buried in the foundation ground (2).

4. The starting reaction frame structure for a pipe jacking machine according to claim 2, characterized in that: A vertical pole (6) is provided on the foundation ground (2) on the left side of the anchor (8) close to the pipe jacking machine; a horizontal pole (5) is provided between the top of the vertical pole (6) and the steel plate (3); and the diagonal brace (4) intersecting the horizontal pole (5) is fixedly connected to the horizontal pole (5).

5. The starting reaction frame structure for a pipe jacking machine according to claim 4, characterized in that: The vertical rod (6) is arranged vertically; and the horizontal rod (5) is arranged horizontally.

6. The starting reaction frame structure for a pipe jacking machine according to claim 4, characterized in that: It also includes an inclined rod (7); one end of the inclined rod (7) is connected to the top of the vertical rod (6), and the other end is inclined toward one side of the steel plate (3) and connected to the base ground (2); the inclined brace (4) intersecting the inclined rod (7) is fixedly connected to the inclined rod (7).

7. The starting reaction frame structure for a pipe jacking machine according to claim 6, characterized in that: The angle between the inclined rod (7) and the base ground (2) is 45°.

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