Modular shield launching counterforce frame and construction method thereof

Abstract

The application discloses a modular shield launching counterforce frame and a construction method thereof. The shield launching counterforce frame comprises a lower supporting beam, a stand column, an upper supporting beam, a counter support rod and a back support. Each component is designed in a modular manner and can be repeatedly used by being assembled and disassembled, so that the shield launching counterforce frame is convenient to operate, low in cost and convenient to construct. The shield launching counterforce frame is a novel scalable modular shield launching counterforce frame. In use, first, the size of a ring frame of the shield launching counterforce frame and the positions of each component are designed according to a shield machine used in a construction project; then, each module of the device is assembled and welded and fixed at corresponding positions in a construction site according to the design; and after shield method construction is completed, the shield launching counterforce frame is disassembled for circulation. The shield launching counterforce frame solves the problem of poor reusability of existing shield machine launching counterforce frames.

Description

Technical Field

[0001] This invention relates to the field of tunnel boring machine (TBM) construction technology, specifically to a modular TBM launching reaction frame and its construction method. Background Technology

[0002] Currently, most underground tunnel projects use the shield tunneling method, which requires a shield launching reaction frame during shield launching. Existing shield launching reaction frames have fixed dimensions, only suitable for projects using a specific shield machine with a fixed diameter, making reuse difficult. This not only increases construction costs and causes significant waste, but also makes storage and transportation of the equipment challenging. To address these issues, this invention aims to achieve scalability in the dimensions of the shield launching reaction frame, improve its applicability and reusability, reduce construction costs, and facilitate storage and transportation. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, a modular shield tunneling machine launching reaction frame and its construction method are provided to solve the problem of poor reusability of existing shield tunneling machine launching reaction frames.

[0004] To achieve the above objectives, a modular shield tunneling initiation reaction frame is provided, comprising:

[0005] The lower support beam has a plurality of first insertion holes on its upper part, and the plurality of first insertion holes are spaced apart along the length direction of the lower support beam.

[0006] Two opposing columns are provided, with a first connector formed at the bottom of each column. The first connector is detachably inserted into a first hole at the end of the lower support beam. Multiple second holes are provided on opposite sides of the two columns, and the multiple second holes are spaced apart along the height direction of the columns.

[0007] The upper support beam includes two coaxially arranged beam segments, each beam segment having a facing end and a back-to-back end. The back-to-back ends of the two beam segments form second connectors, which are respectively inserted into a second insertion hole at the top of the column. One beam segment has a socket notch at its facing end, and the other beam segment has a third connector at its facing end. The third connector is adjustablely inserted into the socket notch. The bottom of each beam segment has multiple third insertion holes, which are arranged along the length of the beam segment.

[0008] At least four supporting rods are provided, one end of which is detachably inserted into the second insertion hole of the column, and the other end of which is detachably inserted into the first insertion hole of the lower support beam or the third insertion hole of the beam segment. The supporting rods are respectively provided between the beam segment and the column, and between the lower support beam and the column. The at least four supporting rods, the column, the lower support beam and the upper support beam form an annular frame for supporting the tunnel boring machine. The size of the annular frame is adapted to the outer diameter of the tunnel boring machine.

[0009] Back bracing is provided between the outside of the column, away from the tunnel boring machine, and the ground.

[0010] Furthermore, the column includes a thicker diameter section and a thinner diameter section connected to the thicker diameter section. The thinner diameter section is located above the thicker diameter section. The thicker diameter section and the thinner diameter section are respectively provided with a plurality of second insertion holes. One end of the support rod inserted into the third insertion hole is inserted into the third insertion hole of the thinner diameter section, and one end of the support rod inserted into the first insertion hole is inserted into the third insertion hole of the thicker diameter section.

[0011] Furthermore, the narrow diameter section is disposed on one side of the upper end face of the thick diameter section, and the narrow diameter sections of the two columns extend opposite to each other on the side away from the tunnel boring machine to form supporting flanges. The supporting flanges are supported by the supporting rods, and the supporting flanges are connected to the other side of the upper end face of the thick diameter section.

[0012] Furthermore, the upper support beam also includes a sleeve, which is movably fitted onto the outside of the opposite ends of the two beam segments.

[0013] Furthermore, the side wall of the socket notch facing the tunnel boring machine has multiple wall holes, which are spaced apart along the length of the beam segment. The third connector forms a limiting block, which is detachably embedded in one of the wall holes.

[0014] Furthermore, a fourth connector is formed at each end of the support rod, and the shape of the fourth connector is adapted to the shape of the first socket.

[0015] Furthermore, each of the columns is provided with a back support at its middle and top.

[0016] This invention provides a construction method for a modular shield tunneling starting reaction frame, comprising the following steps:

[0017] The lower support beam is installed on the ground inside the shield tunneling starting shaft;

[0018] A pair of support rods are detachably inserted into the two second insertion holes of the two columns respectively;

[0019] The first connectors of the two columns are detachably inserted into a first hole at each end of the lower support beam, so that the distance between the two columns is adapted to the outer diameter of the tunnel boring machine, and the lower support rods of the columns are inserted into a first hole of the lower support beam.

[0020] An upper support beam is positioned between the upper ends of the two columns. The length of the upper support beam is adjusted by adjusting the position of the third connector of the upper support beam in the socket notch. This allows the second connectors of the upper support beam segments to be detachably inserted into a second socket at the upper end of each of the two columns. At least four support rods, the columns, the lower support beam, and the upper support beam form an annular frame. The size of the annular frame is adapted to the outer diameter of the tunnel boring machine.

[0021] A back brace is installed between the outside of the column, away from the tunnel boring machine, and the ground, with the back brace supporting the outside of the column.

[0022] The beneficial effects of this invention are as follows: The modular shield tunneling starting reaction frame of this invention includes a lower support beam, columns, an upper support beam, counter-struts, and back braces. Each component adopts a modular design, allowing for reusability through assembly and disassembly. It is convenient to operate, low in cost, and easy to construct, representing a novel type of retractable modular shield tunneling starting reaction frame. In use, the size of the annular frame and the position of each component of the modular shield tunneling starting reaction frame are first designed according to the shield machine used in the construction project. Then, the modules are assembled and welded to the corresponding positions on the construction site according to the design. After the shield tunneling construction is completed, the modular shield tunneling starting reaction frame is disassembled for reuse. Compared to existing technologies, the modular shield tunneling starting reaction frame of this invention has a reasonable structural design. By incorporating modular square frame components, it achieves the rescalability of the shield tunneling starting reaction frame size, improves the applicability of the reaction frame's dimensions, allows for reusability, reduces construction costs, and facilitates the storage and transportation of the device. Attached Figure Description

[0023] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the modular shield tunneling starting reaction frame according to an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the structure of the column according to an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the upper support beam according to an embodiment of the present invention.

[0027] Figure 4This is a schematic diagram of the elongated state of the upper support beam in an embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram illustrating the usage state of the modular shield tunneling starting reaction frame according to an embodiment of the present invention. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] Reference Figures 1 to 5 As shown, the present invention provides a modular shield tunneling starting reaction frame, comprising: a lower support beam 1, a column 2, an upper support beam 3, a counterspan 4, and a back brace 5.

[0032] The lower support beam 1 is a rectangular beam with a rectangular cross-section. Multiple first insertion holes are provided on the upper part of the lower support beam 1. These first insertion holes are spaced apart along the length of the lower support beam 1. Specifically, the first insertion holes are located on the upper surface of the lower support beam. The multiple first insertion holes are evenly spaced.

[0033] Two columns 2 are arranged opposite each other. A first connector is formed at the bottom end of each column 2. The shape of the first connector is adapted to the shape of a first insertion hole. The first connector is detachably inserted into a first insertion hole at the end of the lower support beam 1. The distance between the two columns is adapted to the outer diameter of the tunnel boring machine. Multiple second insertion holes are respectively opened on opposite sides of the two columns 2. The multiple second insertion holes are spaced apart along the height direction of the columns 2.

[0034] The upper support beam 3 comprises two beam segments 31. The two beam segments 31 are coaxially arranged. Each beam segment 31 has an opposite end and a back end. A socket notch is formed at the opposite end of one beam segment 31. A third connector 33 is formed at the opposite end of the other beam segment 31. The third connector 33 is adjustablely inserted into the socket notch. The depth direction of the socket notch is aligned with the length direction of the beam segment. The third connector can move along the length direction of the beam segment.

[0035] In this embodiment, the beam segment has one side facing the tunnel boring machine and another side facing away from the tunnel boring machine. A socket notch is provided on the side of the beam segment facing the tunnel boring machine.

[0036] The opposing ends of the two beam segments 31 are provided with second connectors 32. The shape of the second connectors is adapted to the shape of the second insertion holes. The second connectors 32 of the two beam segments 31 are respectively inserted into a second insertion hole at the top of the column 2. Multiple third insertion holes are formed at the bottom of each beam segment 31. The multiple third insertion holes are arranged along the length of the beam segment 31.

[0037] In this embodiment, there are multiple, but at least four, support rods. The support rods are located inside the frame structure formed by the column, upper support beam, and lower support beam. One end of the support rod 4 is detachably inserted into the second insertion hole of the column 2. The other end of the support rod 4 is detachably inserted into the first insertion hole of the lower support beam 1 or the third insertion hole of the beam segment 31. Support rods 4 are respectively installed between the beam segment 31 and the column 2, and between the lower support beam 1 and the column 2. At least four support rods 4, together with the column 2, lower support beam 1, and upper support beam 3, form an annular frame for supporting the tunnel boring machine 6. The size of the annular frame is adapted to the outer diameter of the tunnel boring machine 6.

[0038] See Figure 5 During use, the annular frame is supported at the tail of the tunnel boring machine (TBM) and is placed between the TBM and the annular frame after the TBM assembles the tunnel segments 7 into a ring. The annular frame provides reaction force to the TBM.

[0039] Back brace 5 is positioned between the outside of column 2, away from the tunnel boring machine 6, and the ground.

[0040] As a preferred implementation method, see [reference]. Figure 4 The column 2 includes a thicker diameter section 31 and a thinner diameter section 32. The outer diameter of the thicker diameter section is larger than that of the thinner diameter section. The thinner diameter section 32 is connected to the thicker diameter section 31 and is located on the upper part of the thicker diameter section 31. Both the thicker diameter section 31 and the thinner diameter section 32 have multiple second insertion holes. One end of the support rod 4, which is inserted into a third insertion hole, is inserted into the third insertion hole of the thinner diameter section 32. One end of the support rod 4, which is inserted into a first insertion hole, is inserted into the third insertion hole of the thicker diameter section 31.

[0041] In this embodiment, the narrower diameter section 32 is disposed on one side of the upper end face of the wider diameter section 31. (See reference...) Figure 2 The narrow-diameter sections 32 of the two columns 2 extend opposite to the shield machine 6 to form supporting flanges 33. The supporting flanges 33 are supported by the struts 4. The supporting flanges 33 are connected to the other side of the upper end face of the thick-diameter section 31.

[0042] See Figure 3 and Figure 4 In some embodiments, the upper support beam 3 further includes a sleeve. The sleeve is movably fitted onto the outside of the opposite ends of the two beam segments 31. In this embodiment, the cross-section of the beam segment is rectangular. The inner cavity shape of the sleeve is adapted to the shape of the cross-section of the beam segment. The sleeve is movable along the length of the beam segment.

[0043] In a preferred embodiment, the sidewall of the socket notch facing the tunnel boring machine 6 has multiple wall holes. These wall holes are spaced apart along the length of the beam segment 31. The third connector 33 has a limiting block. The limiting block is detachably embedded in one of the wall holes.

[0044] After determining the distance between the two columns based on the outer diameter of the tunnel boring machine, the length of the upper support beam was also determined. A limiting block was then inserted into a corresponding hole in the wall, ensuring the length of the upper support beam matched the distance between the two columns. After the limiting block was inserted into the wall hole, the sleeve was slid to the opposite ends of the two beam segments and wrapped around them. After the upper support beam was installed on the two columns, a back brace was installed between the sleeve and the ground.

[0045] In this embodiment, there are multiple back supports. Specifically, each column 2 is provided with a back support 5 at its middle and top. The casing is supported by back supports between itself and the ground of the launching well.

[0046] A base plate is installed at each end of the back support. The back support is inclined. The base plate at the upper end of the back support is detachably connected to the column or the sleeve, and the base plate at the lower end of the back support is installed to the ground of the launching well by anchors.

[0047] See Figure 2 In this embodiment, there are various length specifications for the support rods. Based on the outer diameter of the tunnel boring machine, different lengths of support rods are determined. A fourth connector 41 is formed at each end of the support rod 4. The shape of the fourth connector 41 is adapted to the shape of the first insertion hole.

[0048] After the struts are installed, the four struts, the lower support beam, and the upper support beam form a ring frame. The outer diameter of the ring frame is adapted to the outer diameter of the tunnel boring machine (TBM) so that the ring frame can support the TBM and provide it with reaction force.

[0049] This invention provides a construction method for a modular shield tunneling starting reaction frame, comprising the following steps:

[0050] S1. Install the lower support beam 1 on the ground inside the shield tunneling starting shaft.

[0051] S2. A pair of support rods 4 are detachably inserted into the two second holes of the two columns 2 respectively.

[0052] S3. The first connectors of the two columns 2 are detachably inserted into the first holes at both ends of the lower support beam 1, so that the distance between the two columns 2 is adapted to the outer diameter of the tunnel boring machine 6, and the lower support rods 4 of the columns 2 are inserted into the first holes of the lower support beam 1.

[0053] S4. The upper support beam 3 is set between the upper ends of the two columns 2. The length of the upper support beam 3 is adjusted by adjusting the position of the third connector 33 of the upper support beam 3 in the socket notch, so that the second connector 32 of the beam segment 31 of the upper support beam 3 is detachably inserted into a second socket at the upper end of the two columns 2, so that at least four support rods 4, the columns 2, the lower support beam 1 and the upper support beam 3 form an annular frame, the size of which is adapted to the outer diameter of the shield machine 6.

[0054] S5. Install a back support 5 between the outside of the column 2 away from the shield machine 6 and the ground. The back support 5 supports the outside of the column 2.

[0055] The modular shield tunneling starting reaction frame of the present invention includes a lower support beam, a column, an upper support beam, a countersupplier, and a back brace. Each component adopts a modular design, can be reused through assembly and disassembly, is easy to operate, has low cost, and is convenient to construct. It is a new type of telescopic modular shield tunneling starting reaction frame.

[0056] When in use, firstly, the size of the annular frame of the modular shield launching reaction frame of this invention and the position of each component are designed according to the shield machine used in the construction project. Then, the modules of the device are assembled and welded and fixed at the corresponding positions on the construction site according to the design. After the shield tunneling construction is completed, the modular shield launching reaction frame of this invention is disassembled for reuse.

[0057] Compared with existing technologies, the modular shield tunneling starting reaction frame structure of the present invention has a reasonable design. By adding modular square structure components, it realizes the scalability of the shield tunneling starting reaction frame size, improves the applicability of the reaction frame size, is reusable, reduces construction costs, and facilitates the storage and transportation of the device.

[0058] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A modular shield tunneling machine launching reaction frame, characterized in that, include: The lower support beam has a plurality of first insertion holes on its upper part, and the plurality of first insertion holes are spaced apart along the length direction of the lower support beam. Two opposing columns are provided, with a first connector formed at the bottom of each column. The first connector is detachably inserted into a first hole at the end of the lower support beam. Multiple second holes are provided on opposite sides of the two columns, and the multiple second holes are spaced apart along the height direction of the columns. The upper support beam includes two coaxially arranged beam segments, each beam segment having a facing end and a back-to-back end. The back-to-back ends of the two beam segments form second connectors, which are respectively inserted into a second insertion hole at the top of the column. The facing end of one beam segment forms a socket notch, and the facing end of the other beam segment forms a third connector, which is adjustablely inserted into the socket notch. The bottom of the beam segment forms multiple third insertion holes, which are arranged along the length of the beam segment. At least four supporting rods are provided, one end of which is detachably inserted into the second insertion hole of the column, and the other end of which is detachably inserted into the first insertion hole of the lower support beam or the third insertion hole of the beam segment. The supporting rods are respectively provided between the beam segment and the column, and between the lower support beam and the column. The at least four supporting rods, the column, the lower support beam and the upper support beam form an annular frame for supporting the tunnel boring machine. The size of the annular frame is adapted to the outer diameter of the tunnel boring machine. Back brace, which is placed between the outer side of the column away from the tunnel boring machine and the ground; The column includes a thicker diameter section and a thinner diameter section connected to the thicker diameter section. The thinner diameter section is located on the upper part of the thicker diameter section. The thicker diameter section and the thinner diameter section are respectively provided with a plurality of second insertion holes. One end of the support rod inserted into the third insertion hole is inserted into the third insertion hole of the thinner diameter section, and one end of the support rod inserted into the first insertion hole is inserted into the third insertion hole of the thicker diameter section.

2. The modular shield tunneling starting reaction frame according to claim 1, characterized in that, The narrow diameter section is located on one side of the upper end face of the thick diameter section. The narrow diameter sections of the two columns extend opposite to each other on the side away from the tunnel boring machine to form supporting flanges. The supporting flanges are supported by the supporting rods and connected to the other side of the upper end face of the thick diameter section.

3. The modular shield tunneling starting reaction frame according to claim 1, characterized in that, The upper support beam also includes a sleeve, which is movably fitted onto the outside of the opposite ends of the two beam segments.

4. The modular shield tunneling starting reaction frame according to claim 3, characterized in that, The side wall of the socket notch facing the tunnel boring machine has multiple wall holes, which are spaced apart along the length of the beam segment. The third connector forms a limiting block, which is detachably embedded in one of the wall holes.

5. The modular shield tunneling starting reaction frame according to claim 1, characterized in that, The two ends of the support rod are respectively formed with a fourth connector, and the shape of the fourth connector is adapted to the shape of the first socket.

6. The modular shield tunneling starting reaction frame according to claim 1, characterized in that, Each of the columns is provided with a back support at its middle and top.

7. A construction method for a modular shield tunneling starting reaction frame as described in any one of claims 1 to 6, characterized in that, Includes the following steps: The lower support beam is installed on the ground inside the shield tunneling starting shaft; A pair of support rods are detachably inserted into the two second insertion holes of the two columns respectively; The first connectors of the two columns are detachably inserted into a first hole at each end of the lower support beam, so that the distance between the two columns is adapted to the outer diameter of the tunnel boring machine, and the lower support rods of the columns are inserted into a first hole of the lower support beam. An upper support beam is positioned between the upper ends of the two columns. The length of the upper support beam is adjusted by adjusting the position of the third connector of the upper support beam in the socket notch. This allows the second connectors of the upper support beam segments to be detachably inserted into a second socket at the upper end of each of the two columns. At least four support rods, the columns, the lower support beam, and the upper support beam form an annular frame. The size of the annular frame is adapted to the outer diameter of the tunnel boring machine. A back brace is installed between the outside of the column, away from the tunnel boring machine, and the ground, with the back brace supporting the outside of the column.

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