A shield launching inverted force frame support system

Abstract

The application discloses a shield machine hole starting special-shaped counterforce support system, which comprises an upper half support ring, the upper half support ring is detachably connected with a lower half support ring, the upper half support ring and the lower half support ring jointly form a circular support ring, the back surface of the lower half support ring is connected with a counterforce support frame, and the back surface of the upper half support ring is provided with a plurality of top inclined braces in the circumferential direction, the back surfaces of the two side connecting positions of the upper half support ring and the lower half support ring are both provided with side inclined braces, and the back surface of the counterforce support frame is provided with a bottom inclined brace. The special-shaped counterforce support frame is simple in manufacture, convenient to install and reusable. During shield starting, the stress conditions of each part of the counterforce support frame are monitored, the performance of the counterforce support frame is good, and no deformation, welding-off, displacement and other phenomena occur, so that the node target of shield construction can be completed on schedule, with quality and quantity. The successful application of the special-shaped counterforce support frame provides solid and reliable basis for starting of the shield machine under the same or similar working conditions.

Description

Technical Field

[0001] This application belongs to the technical field of tunnel construction equipment, specifically relating to a shield tunneling machine in-tunnel starting irregular reaction frame support system. Background Technology

[0002] The reaction frame provides reaction force for the tunnel boring machine (TBM) launch and is a key element for successful TBM launch. Its structural form varies depending on the working conditions. In the confined space of a tunnel, conventional reaction frame designs cannot take advantage of the convenient hoisting conditions and environment of subway station shafts for installation. The installation process is fixed, making it impossible to organize cross-construction, resulting in slow construction speed, long construction time, and difficulty in guaranteeing the TBM launch schedule. Utility Model Content

[0003] The purpose of this application is to provide a special-shaped reaction frame support system for tunnel boring machine (TBM) in-tunnel launching. It makes full use of the surrounding environment in the limited space, is flexible and adaptable, and is highly targeted. The TBM launching preparation work can be carried out simultaneously in the tunnel, at the shaft opening, and on the ground without interference. It can better fit the actual construction conditions on site, increase the operability of construction, and ensure that the TBM launching work is completed on schedule, safely and smoothly.

[0004] The objective of this application is achieved through the following technical solution:

[0005] A shield tunneling machine in-tunnel starting irregular reaction frame support system includes an upper half support ring, which is detachably connected to a lower half support ring. The upper half support ring and the lower half support ring together form a circular support ring. The back of the lower half support ring is connected to the reaction frame. Several top diagonal braces are arranged along the circumference on the back of the upper half support ring. Side diagonal braces are arranged on the back of both sides of the connection between the upper half support ring and the lower half support ring. Bottom diagonal braces are arranged on the back of the reaction frame.

[0006] Furthermore, both the upper and lower support rings are box-shaped structures formed by welding the front and back panels, outer and inner peripheral plates of the support ring, with ribs welded inside the box-shaped structure.

[0007] Furthermore, the upper support ring is connected to the lower support ring via a flange and bolts.

[0008] Furthermore, the reaction support has a concave structure.

[0009] Furthermore, the reaction support includes a support vertical rod, a support horizontal rod, and a support diagonal rod. The two ends of the support horizontal rod are respectively connected to the support vertical rod to form a concave structure, and a support diagonal rod is provided between the support vertical rod and the support horizontal rod.

[0010] Furthermore, the vertical support rods, horizontal support rods, and diagonal support rods are all box-shaped structures formed by welding the front panel, back panel, outer side panel, and inner side panel of the rod, and the box-shaped structure has ribs welded inside.

[0011] Furthermore, both the top and side diagonal braces are H-beams with welded ribs on both sides.

[0012] Furthermore, the top diagonal brace is welded to the upper half support ring, the side diagonal brace is welded to the upper half support ring and the lower half support ring, and the bottom diagonal brace is welded to the reaction support frame.

[0013] Furthermore, the bottom diagonal brace includes a first support rod, a second support rod, a third support rod, and a bottom plate diagonal brace. The first support rod, the second support rod, the third support rod, and the bottom plate diagonal brace are arranged on both sides of the reaction support frame. The first support rod is located on the outermost side of the reaction support frame. The second support rod is located inward relative to the first support rod and lower than the first support rod. The third support rod is located inward relative to the second support rod and lower than the second support rod. The bottom plate diagonal brace is located in the middle of the reaction support frame.

[0014] Furthermore, the first, second, and third struts are all H-beams with welded ribs on both sides, and the bottom plate diagonal brace is a right-angled trapezoidal box structure formed by welding the front panel, left side, right side, top panel, bottom panel, and diagonal panel.

[0015] The beneficial effects of this application are:

[0016] (1) Social Benefit Prediction Analysis: This special-shaped reaction frame is simple to manufacture, easy to install, and reusable. During the shield tunneling launch, the stress on various parts of the reaction frame was monitored, and its performance was good. No deformation, weld failure, displacement, or other phenomena were observed, ensuring that the shield tunneling construction could complete the node targets on schedule, with quality, and in quantity. The successful application of the special-shaped reaction frame provides a solid and reliable basis for the subsequent launch of shield machines under the same or similar working conditions.

[0017] (2) Economic benefit prediction analysis: Compared with the traditional reaction frame, the special-shaped reaction frame uses 30mm thick steel plates, which saves 26t of total material usage, saves RMB159,120 in costs, saves RMB12,000 in machine shift fees, and saves a total of RMB171,120.

[0018] The aforementioned main solution and its various further alternatives can be freely combined to form multiple solutions, all of which are solutions that can be adopted and claimed in this application; furthermore, the (non-conflicting alternatives) can also be freely combined with each other and with other alternatives. Those skilled in the art, after understanding this solution, will realize from the prior art and common general knowledge that there are many combinations, all of which are technical solutions to be protected in this application, and will not be exhaustively listed here. Attached Figure Description

[0019] Figure 1This is a front view of the structure of this application.

[0020] Figure 2 This is a side view of the structure of this application.

[0021] Figure 3 This is a schematic diagram of the upper or lower support ring of this application.

[0022] Figure 4 This is a structural schematic diagram of the reaction brace of this application.

[0023] Figure 5 This is a structural diagram of the top, side, and bottom diagonal braces of this application.

[0024] Figure 6 This is a structural schematic diagram of the base plate diagonal brace of this application.

[0025] In the diagram: 1-Upper half support ring, 2-Lower half support ring, 3-Reaction support frame, 4-Top diagonal brace, 5-Side diagonal brace, 6-Bottom diagonal brace; 301-Vertical support frame, 302-Horizontal support frame, 303-Diagonal support frame, 601-First support rod, 602-Second support rod, 603-Third support rod, 604-Bottom plate diagonal brace. Detailed Implementation

[0026] The present application will be further described below with reference to specific embodiments and accompanying drawings.

[0027] Example

[0028] refer to Figures 1-6 As shown, a shield tunneling machine in-tunnel starting irregular reaction frame support system includes an upper half support ring 1, a lower half support ring 2, a reaction frame 3, a top inclined brace 4, a side inclined brace 5, and a bottom inclined brace 6.

[0029] The upper support ring 1 and the lower support ring 2 are detachably connected. Together, they form a circular support ring, which provides reaction support to the tunnel boring machine, achieving the initial jacking effect. The detachable connection between the upper support ring 1 and the lower support ring 2 facilitates construction operations.

[0030] Several top diagonal braces 4 are arranged along the circumferential direction on the back of the upper half support ring 1. The top diagonal braces 4 act on the embedded plate of the secondary lining, providing reaction force support for the upper half support ring 1. Side diagonal braces 5 are arranged on the back of the connection between the upper half support ring 1 and the lower half support ring 2 on both sides. The side diagonal braces 5 act on the embedded plate of the secondary lining, providing reaction force support for the connection between the two side support rings.

[0031] The back of the lower half support ring 2 is connected to the reaction support frame 3. The back of the reaction support frame 3 is provided with a bottom diagonal brace 6. That is, the force of the lower half support ring 2 is first transmitted to the reaction support frame 3, and then acts on the bottom embedded plate through the bottom diagonal brace 6, providing a reaction support for the lower half support ring 2.

[0032] Both the upper support ring 1 and the lower support ring 2 are box-shaped (rectangular) structures formed by welding the front and back panels, outer and inner circumferential plates of the support ring. The box-shaped structure has ribs welded inside to increase overall rigidity. Specifically, the outer side of the box-shaped structure is made of 30mm thick Q235 steel plate and welded, and the inside is reinforced with 20mm thick ribs.

[0033] The upper support ring 1 is connected to the lower support ring 2 by flanges and bolts. Both ends of the upper support ring 1 and the lower support ring 2 are welded with flange plates, and the two support rings are detachably connected by the flange plates.

[0034] The reaction support 3 has a concave structure to match the arc structure of the lower half support ring 2, ensuring the transmission of force and providing effective and reliable support for the lower half support ring 2.

[0035] The reaction support 3 includes a vertical support rod 301, a horizontal support rod 302, and a diagonal support rod 303. The two ends of the horizontal support rod 302 are connected to the vertical support rod 301, forming a concave structure. The upper end of the vertical support rod 301 is welded and fixed to the end of the lower half-support ring 2, and the middle part of the horizontal support rod 302 is welded and fixed to the middle part of the lower half-support ring 2. A diagonal support rod 303 is provided between the vertical support rod 301 and the horizontal support rod 302 to enhance overall rigidity. The diagonal support rod 303 is welded and fixed to the arc segment between the end and the middle of the lower half-support ring 2.

[0036] The vertical support 301, horizontal support 302, and diagonal support 303 are all box-type (rectangular) structures formed by welding the front panel, back panel, outer side panel, and inner side panel of the support. The box-type structure has ribs welded inside. Specifically, the outer side of the box-type structure is made of 30mm thick Q235 steel plate and welded, and the inside is reinforced with 20mm thick ribs.

[0037] The top diagonal brace 4 and the side diagonal brace 5 are arranged radially at an inclination to transfer the force of the support ring to the outer circumference. The ends of the top diagonal brace 4 and the side diagonal brace 5 extend outward relative to the upper half of the support ring 1, so as to transfer the force outward, that is, to the arched lining structure above the tunnel.

[0038] Both the top diagonal brace 4 and the side diagonal brace 5 are H-beams with welded ribs on both sides and openings. Specifically, the eight top diagonal braces 4 are made of H400 steel, with 20mm thick ribs welded to both sides of the openings to increase overall rigidity. The side diagonal braces (at positions 3 and 9) are all made of H300 steel, with 20mm thick ribs welded to both sides of the openings to increase overall rigidity.

[0039] The top diagonal brace 4 is welded to the upper half support ring 1, specifically to the back plate of the upper half support ring 1. The side diagonal brace 5 is welded to the upper half support ring 1 and the lower half support ring 2, specifically to the back plates of the upper half support ring 1 and the lower half support ring 2. The bottom diagonal brace 6 is welded to the reaction support frame 3, specifically to the back plate of the support frame vertical rod 301, the support frame horizontal rod 302, or the support frame diagonal rod 303.

[0040] The bottom diagonal brace 6 includes a first support rod 601, a second support rod 602, a third support rod 603, and a bottom plate diagonal brace 604. The first support rod 601, the second support rod 602, the third support rod 603, and the bottom plate diagonal brace 604 are arranged on both sides of the reaction support frame 3. The first support rod 601 is located on the outermost side of the reaction support frame 3. The second support rod 602 is located inward relative to the first support rod 601 and lower than the first support rod 601. The third support rod 603 is located inward relative to the second support rod 602 and lower than the second support rod 602. The bottom plate diagonal brace 604 is located in the middle of the reaction support frame 3.

[0041] The support lengths of the first strut 601, the second strut 602, and the third strut 603 gradually change from long to short. Through the arrangement of multiple struts from the outside to the inside, from high to low, and from long to short, a stable and reliable support is achieved for the reaction support frame 3, ensuring the stability of the lower support.

[0042] The first strut 601, the second strut 602, and the third strut 603 are all H-beams with welded ribs on both sides and openings. There is one strut on each side, specifically made of H300 steel. 20mm thick ribs are welded to both sides of the openings to increase overall rigidity. The bottom plate diagonal brace 604 is a right-angled trapezoidal box structure formed by welding the front panel, left side panel, right side panel, top panel, bottom panel, and diagonal panel. It is specifically made of 20mm and 30mm thick Q235 steel plates.

[0043] The foregoing basic examples and their further alternative examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed in this application. In the scheme of this application, each alternative example can be arbitrarily combined with any other basic example and alternative example.

[0044] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A shield tunneling machine in-tunnel launching irregular reaction frame support system, comprising an upper support ring (1), characterized in that: The upper half support ring (1) and the lower half support ring (2) are detachably connected. The upper half support ring (1) and the lower half support ring (2) together form a circular support ring. The back of the lower half support ring (2) is connected to the reaction support frame (3). Several top diagonal braces (4) are arranged on the back of the upper half support ring (1) along the circumferential direction. Side diagonal braces (5) are arranged on the back of the connection points on both sides of the upper half support ring (1) and the lower half support ring (2). Bottom diagonal braces (6) are arranged on the back of the reaction support frame (3).

2. The shield tunneling machine in-tunnel launching irregular reaction frame support system according to claim 1, characterized in that: The upper half support ring (1) and the lower half support ring (2) are both box-shaped structures formed by welding the front panel, back panel, outer peripheral plate and inner peripheral plate of the support ring. Ribs are welded inside the box-shaped structure.

3. The shield tunneling machine in-tunnel launching irregular reaction frame support system according to claim 1 or 2, characterized in that: The upper support ring (1) is connected to the lower support ring (2) by a flange and bolts.

4. The shield tunneling machine in-tunnel launching irregular reaction frame support system according to claim 1, characterized in that: The reaction support (3) is a concave structure.

5. The shield tunneling machine in-tunnel launching irregular reaction frame support system according to claim 1 or 4, characterized in that: The reaction support (3) includes a support vertical rod (301), a support horizontal rod (302) and a support diagonal rod (303). The two ends of the support horizontal rod (302) are respectively connected to the support vertical rod (301) and form a concave structure. The support diagonal rod (303) is provided between the support vertical rod (301) and the support horizontal rod (302).

6. The shield tunneling machine in-tunnel launching irregular reaction frame support system according to claim 5, characterized in that: The vertical support rod (301), horizontal support rod (302), and diagonal support rod (303) are all box-shaped structures formed by welding the front panel, back panel, outer side panel, and inner side panel of the rod. Ribs are welded inside the box-shaped structure.

7. The shield tunneling machine in-tunnel launching irregular reaction frame support system according to claim 1, characterized in that: The top diagonal brace (4) and the side diagonal brace (5) are both H-beams with welded ribs on both sides.

8. The shield tunneling machine in-tunnel launching irregular reaction frame support system according to claim 1 or 7, characterized in that: The top diagonal brace (4) is welded to the upper half support ring (1), the side diagonal brace (5) is welded to the upper half support ring (1) and the lower half support ring (2), and the bottom diagonal brace (6) is welded to the reaction support frame (3).

9. The shield tunneling machine in-tunnel launching irregular reaction frame support system according to claim 1 or 4, characterized in that: The bottom diagonal brace (6) includes a first support rod (601), a second support rod (602), a third support rod (603), and a bottom plate diagonal brace (604). The first support rod (601), the second support rod (602), the third support rod (603), and the bottom plate diagonal brace (604) are arranged on both sides of the reaction support frame (3). The first support rod (601) is located on the outermost side of the reaction support frame (3). The second support rod (602) is located inward relative to the first support rod (601) and lower than the first support rod (601). The third support rod (603) is located inward relative to the second support rod (602) and lower than the second support rod (602). The bottom plate diagonal brace (604) is located in the middle of the reaction support frame (3).

10. The shield tunneling machine in-tunnel launching irregular reaction frame support system according to claim 9, characterized in that: The first support rod (601), the second support rod (602), and the third support rod (603) are all H-shaped steels with welded ribs on both sides. The bottom plate diagonal brace (604) is a right-angled trapezoidal box structure formed by welding the front panel, left side, right side, top panel, bottom panel, and diagonal panel.

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