Shield counter-force frame

Abstract

The utility model discloses a shield counter-force frame, which comprises a main frame assembly, a plurality of first supports, a plurality of second supports, a plurality of first connecting rods, a plurality of second connecting rods, a plurality of second connecting rods and a plurality of second connecting rods, the anchoring part is fixedly connected with the second support; the two inclined strut assemblies are arranged on the first support of the main frame assembly and the bottom plate on one side of the shield launching well outlet. Each inclined strut assembly comprises two parallel inclined struts and a plurality of channel steel connecting rods arranged between the two inclined struts; the embedded part assembly comprises four first embedded parts, two second embedded parts and two third embedded parts, and the four first embedded parts and the two second embedded parts are all embedded in a bottom plate on one side of a shield launching well outlet; the two third embedded parts are embedded in the side wall of one side of the shield launching well outlet. The shield counter-force frame can be conveniently, efficiently and accurately installed in a shield starting well with a limited space, and meanwhile the structural performance of the counter-force frame after installation can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of shield tunneling equipment technology, and in particular to a shield reaction frame. Background Technology

[0002] In shield tunnel construction, the initial stage of the shield machine is crucial. As a key structure that provides the initial propulsion reaction force for the shield machine, the performance of the reaction frame directly affects the safety and efficiency of shield construction.

[0003] However, in some space-constrained shield tunneling launch shaft environments, traditional reaction frame structures have revealed numerous problems, as follows:

[0004] On the one hand, conventional reaction frames are large in size and difficult to install in a limited space, often requiring a lot of manpower and time, and may not be able to be accurately positioned, affecting the construction progress;

[0005] On the other hand, due to the complex working conditions in a limited space, such as uneven ground pressure and limited operating space, traditional reaction frames are unable to provide stable, uniform and reliable reaction forces, which can easily lead to loss of control of the tunnel boring machine's starting attitude, increasing construction risks and costs.

[0006] Therefore, developing a reaction frame structure that can be easily and efficiently installed in the limited space of the shield tunneling starting shaft, while ensuring the performance of the reaction frame structure after installation, has become a key research direction for those skilled in the art. Utility Model Content

[0007] The purpose of this utility model is to provide a shield reaction frame to solve the problem that traditional reaction frame structures are difficult to install and cannot guarantee the performance of the reaction frame structure when the space environment of the shield launching shaft is limited.

[0008] To address the aforementioned technical problems, this utility model provides a shield tunneling reaction frame, comprising: a main frame assembly including: two parallel first supports and a second support vertically disposed between the two first supports; an anchoring component fixedly connected to the second support; two diagonal bracing assemblies respectively disposed on the first support of the main frame assembly and on the bottom plate on one side of the shield tunneling shaft exit; each diagonal bracing assembly including: two parallel diagonal braces and several channel steel connecting rods disposed between the two diagonal braces; and a pre-embedded component assembly including: four first pre-embedded components, two second pre-embedded components, and two third pre-embedded components. The four first pre-embedded components and the two second pre-embedded components are all pre-embedded on the bottom plate on one side of the shield tunneling shaft exit, for establishing the connection between the diagonal braces and the first supports and the bottom plate; the two third pre-embedded components are pre-embedded on the side wall on one side of the shield tunneling shaft exit, for establishing the connection between the anchoring component and the side wall.

[0009] Optionally, the shield reaction frame also includes a crossbeam, which is set on the side wall of the shield launching shaft exit and is fixedly connected to the anchoring components and the third embedded component.

[0010] Optionally, in the shield reaction frame, the second support includes: two I-beams arranged side by side and steel plates welded and fixed to the upper and lower flanges of the two I-beams respectively.

[0011] Optionally, in the shield reaction frame, the I-beam is a 50B I-beam.

[0012] Optionally, in the aforementioned shield reaction frame, several channel steel connecting rods and two diagonal braces together form multiple triangular units.

[0013] Optionally, in the shield reaction frame, the diagonal bracing and anchoring components are both made of 406 steel pipe, and the first support is made of 540 steel pipe.

[0014] Optionally, in the shield reaction frame, each first embedded part includes: a steel plate and several anchor bars vertically fixed to one side of the steel plate, wherein the steel plate has a size of 1000mm*1000mm*20mm.

[0015] Optionally, in the shield reaction frame, each second embedded part includes: a steel plate and several anchor bars vertically fixed to one side of the steel plate, wherein the steel plate has dimensions of 800mm*800mm*20mm.

[0016] Optionally, in the shield reaction frame, each third embedded part includes: a steel plate and several anchor bars vertically fixed to one side of the steel plate, wherein the steel plate has dimensions of 800mm*800mm*20mm.

[0017] Optionally, in the aforementioned shield reaction frame, the diagonal brace forms a 30° angle with the plane of the base plate.

[0018] The shield reaction frame provided by this utility model has at least the following beneficial effects:

[0019] 1) Compared with the traditional method of setting horizontal steel supports in the launching shaft to directly support the rear wall, the components of the shield reaction frame of this utility model are designed in combination with the limited space on the exit side of the shield launching shaft. For example, the pre-embedded components facilitate the subsequent installation and fixing of each component in the corresponding position. This allows it to closely fit the actual size and working conditions of the shield launching shaft in the limited space, solving the problem of difficult installation of traditional reaction frames in limited space and improving the applicability and construction efficiency of the shield reaction frame.

[0020] 2) The inclined brace of the shield reaction frame of this utility model is set on the bottom plate on one side of the shield launching shaft exit. It does not require much support space, effectively saves the space required for support, and improves construction efficiency.

[0021] 3) The shield reaction frame of this utility model does not require horizontal support or multiple diagonal braces. It only requires two diagonal brace components. By setting several channel steel connecting rods between the two diagonal braces, it not only saves construction costs but also greatly improves the stability of the overall structure. Attached Figure Description

[0022] Figure 1 This is a side view of the shield reaction frame in one embodiment of the present invention;

[0023] Figure 2 This is a front view of the shield reaction frame in one embodiment of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the second support in one embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the first embedded part in one embodiment of the present utility model;

[0026] Figure 5 This is a schematic diagram of the second embedded part in one embodiment of the present invention.

[0027] In the picture:

[0028] 1-First embedded part; 2-Second embedded part; 3-Diagonal brace; 4-First support; 5-Channel steel connecting rod; 6-Second support; 7-Anchoring component; 8-Third embedded part. Detailed Implementation

[0029] The shield reaction frame proposed in this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0031] In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of a utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In utility models, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the utility model according to the specific circumstances.

[0034] Please refer to Figure 1 and Figure 2 The shield reaction frame includes: a main frame assembly, an anchoring component 7, two diagonal brace assemblies, and a pre-embedded component assembly; wherein, the main frame assembly includes: two parallel first supports 4 and a second support 6 vertically arranged between the two first supports 4; the anchoring component 7 is fixedly connected to the second support 6; the two diagonal brace assemblies are respectively arranged on the first support 4 of the main frame assembly and on the bottom plate on one side of the shield launching shaft exit; each diagonal brace assembly includes: two parallel diagonal braces 3 and several channel steel connecting rods 5 arranged between the two diagonal braces 3; the pre-embedded component assembly includes: four first pre-embedded parts 1, two second pre-embedded parts 2 and two third pre-embedded parts 8, the four first pre-embedded parts 1 and the two second pre-embedded parts 2 are all pre-embedded on the bottom plate on one side of the shield launching shaft exit, for establishing the connection between the diagonal braces and the first supports 4 and the bottom plate; the two third pre-embedded parts 8 are pre-embedded on the side wall on one side of the shield launching shaft exit, for establishing the connection between the anchoring component 7 and the side wall.

[0035] The shield reaction frame also includes a crossbeam, which is set on the side wall of the shield launching shaft exit and is fixedly connected to the anchoring component 7 and the third embedded part 8. The crossbeam, the anchoring component 7 and the third embedded part 8 together constitute the crossbeam anchoring system, thereby further enhancing the stability, load-bearing capacity and seismic performance of the shield reaction frame after installation, so as to distribute the load, reduce deformation and improve the overall performance of the structure.

[0036] To improve the stability of the support assembly, the specific layout of the support assembly is designed so that several channel steel connecting rods 5 and two diagonal braces 3 together form multiple triangular units, each triangle constituting a stable structure. Preferably, the diagonal braces form a 30° angle with the plane of the base plate.

[0037] Please refer to Figure 3 The second support 6 includes: two I-beams arranged side by side (i.e., double I-beams) and steel plates welded and fixed to the upper and lower flanges of the two I-beams respectively. In this embodiment, the I-beams are preferably 50B I-beams, with a 20mm steel plate welded to each of their upper and lower flanges.

[0038] In this embodiment, the diagonal brace 3 and the anchoring component 7 are both 406 steel pipes, and the first support 4 is a 540 steel pipe.

[0039] Please refer to Figure 4 and Figure 5 Each first embedded part 1 includes: a steel plate and several anchor bars vertically fixed to one side of the steel plate, wherein the steel plate has a size of 1000mm*1000mm*20mm; each second embedded part 2 includes: a steel plate and several anchor bars vertically fixed to one side of the steel plate, wherein the steel plate has a size of 800mm*800mm*20mm; each third embedded part 8 includes: a steel plate and several anchor bars vertically fixed to one side of the steel plate, wherein the steel plate has a size of 800mm*800mm*20mm.

[0040] Specifically, to better understand the shield reaction frame of this utility model, the following explanation will be based on its actual application during construction:

[0041] Before the shield tunneling commences construction, based on the actual dimensions and geological conditions of the confined space shield tunneling launch shaft, first embedded parts 1, 2, and 8 are installed during the pouring stage on one side of the launch shaft exit. The shield reaction frame of this invention is then assembled on-site. The various components of the main frame assembly are bolted together on the ground according to design requirements, and stiffening ribs are installed at the connection points to ensure the overall strength and stability of the assembled main frame. Then, the diagonal brace 3 and the first support 4 are connected to the first and second embedded parts 2, and connected to the anchoring components 7 in the crossbeam anchoring system via the second support 6. Finally, several channel steel connecting rods 5 are arranged between two adjacent diagonal braces 3 on the same side according to the actual project launch force design requirements.

[0042] It is understood that the above examples are merely examples listed to better understand the technical solutions of the embodiments of this application, and are not intended to be the only limitation on the embodiments.

[0043] Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by this application.

[0044] Compared with traditional reaction frames, the shield reaction frame provided by this utility model has at least the following advantages: 1) Compared with the traditional method of setting horizontal steel supports in the launching shaft to directly support the rear wall, each component of the shield reaction frame of this utility model is designed in combination with the limited space on the side of the shield launching shaft exit. For example, the pre-embedding of pre-embedded components makes it easier for subsequent components to be installed and fixed in the corresponding positions. This allows it to closely fit the actual size and working conditions of the shield launching shaft in the limited space, solving the problem of difficult installation of traditional reaction frames in limited spaces and improving the applicability and construction efficiency of the shield reaction frame.

[0045] 2) The inclined brace of the shield reaction frame of this utility model is set on the bottom plate on one side of the shield launching shaft exit. It does not require much support space, effectively saves the space required for support, and improves construction efficiency.

[0046] 3) The shield reaction frame of this utility model does not require horizontal support or multiple diagonal braces. It only requires two diagonal brace components. By setting several channel steel connecting rods between the two diagonal braces, it not only saves construction costs but also greatly improves the stability of the overall structure.

[0047] Obviously, those skilled in the art can make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Therefore, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model also intends to include these modifications and variations.

Claims

1. A shield reaction frame, characterized in that, The utility model relates to a shield launching shaft exit opening side anchor structure, comprising: a main frame assembly, comprising two mutually parallel first supports (4) and a second support (6) vertically arranged between the two first supports (4); an anchoring component (7) fixedly connected with the second support (6); two inclined support assemblies, each arranged on the bottom plate on one side of the shield launching shaft exit opening; each inclined support assembly comprises two mutually parallel inclined supports (3) and a plurality of channel steel connecting rods (5) arranged between the two inclined supports (3); a pre-embedded component assembly, comprising four first pre-embedded components (1), two second pre-embedded components (2), and two third pre-embedded components (8); the four first pre-embedded components (1) and the two second pre-embedded components (2) are pre-embedded on the bottom plate on one side of the shield launching shaft exit opening, and are used to establish the connection between the inclined supports and the first supports (4) and the bottom plate; the two third pre-embedded components (8) are pre-embedded on the side wall on one side of the shield launching shaft exit opening, and are used to establish the connection between the anchoring component (7) and the side wall.

2. The shield reaction frame according to claim 1, wherein Further comprising: a cross beam arranged on the side wall on one side of the shield launching shaft exit opening and fixedly connected with the anchoring component (7) and the third pre-embedded component (8).

3. The shield reaction frame according to claim 1, wherein, The second support (6) comprises two side-by-side arranged I-beams and steel plates respectively welded and fixed on the upper and lower flanges of the two I-beams.

4. The shield reaction frame according to claim 3, wherein, The I-beam is a 50B I-beam.

5. The shield reaction frame according to claim 1, wherein, The plurality of channel steel connecting rods (5) and the two inclined supports (3) jointly form a plurality of triangular units.

6. The shield reaction frame of claim 1, wherein, The inclined support (3) and the anchoring component (7) are both 406 steel pipes, and the first support (4) is a 540 steel pipe.

7. The shield reaction frame according to any one of claims 1 to 6, wherein Each first pre-embedded component (1) comprises a steel plate and a plurality of anchoring bars vertically fixed on one side of the steel plate, wherein the size of the steel plate is 1000mm*1000mm*20mm.

8. The shield reaction frame according to any one of claims 1 to 6, wherein Each second pre-embedded component (2) comprises a steel plate and a plurality of anchoring bars vertically fixed on one side of the steel plate, wherein the size of the steel plate is 800mm*800mm*20mm.

9. The shield reaction frame according to any one of claims 1 to 6, wherein Each third pre-embedded component (8) comprises a steel plate and a plurality of anchoring bars vertically fixed on one side of the steel plate, wherein the size of the steel plate is 800mm*800mm*20mm.

10. The shield reaction frame according to any one of claims 1 to 6, wherein The inclined support and the plane of the bottom plate form a 30° included angle.

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