Tunnel segment assembling and leveling device
By setting wedge grooves and leveling steel sheets in the tunnel pipe sheet assembly, adjusting the inlay depth and angle of the K-block, the problems of pipe sheet misplaced and assembly difficulties are solved, and a more stable tunnel structure and higher construction quality are achieved. .
Patent Information
- Application Number
- CN202420281461.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-06
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-02-06
AI Technical Summary
In the existing shield tunnel pipe sheet assembly technology, the pipe sheet is incorrectly formed, difficulty assembled and waterproof hidden dangers lead to unstable tunnel structure, affecting construction and operation.
A tunnel pipe sheet assembly leveling device is designed. By setting wedge grooves around the capping block (K block), and using leveling steel sheets and connectors, the insertion depth and angle of the K block are adjusted to ensure smooth connection with the surrounding pipe sheets.
It effectively reduces the wrong stage of the pipe sheet, ensures the flat curve surface of the pipe sheet, improves the construction quality, reduces construction costs, and is suitable for different types of tunnel pipe sheets and locations.
Smart Images
Figure CN222162625U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tunnel segment assembly, in particular to a tunnel segment assembly leveling device. Background Art
[0002] Tunnel segments are the main assembly components of shield construction, and the assembly position of the capping block (hereinafter referred to as K block) affects the change of tunnel line shape. During the tunnel construction process, the K block, as the last segment to be assembled, needs to be embedded in the same position as the adjacent segments and fit tightly, keep the inner arc surface of the same ring segment flat, prevent the segments from misalignment, and ensure the overall stability of the tunnel lining structure.
[0003] However, the existing shield tunnel segment assembly technology still has some defects, especially the problems of segment cracking, assembly difficulties and waterproofing hidden dangers caused by misalignment have a significant impact on construction and operation, and have become technical problems that plague shield tunnel construction and maintenance. There are many factors that cause the shield tunnel segment to misalign, among which the main one is that after the segment is assembled, it is directly subjected to the top force of the shield jack, forcing it to compress backwards, and due to the uneven top force of the whole ring, it causes different longitudinal displacements between the segments. Utility Model Content
[0004] In order to overcome the problems existing in the above prior art, the purpose of the utility model is to provide a tunnel segment assembly leveling device, which sets wedge-shaped grooves on the segments around the capping block (K block), fixes the device in the wedge-shaped grooves, and adjusts the leveling steel sheet to make the K block embedded in a suitable depth, so as to smoothly connect with the surrounding segments, so as to achieve a more simplified and effective installation of the tunnel segments.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A tunnel segment assembly and leveling device comprises a base plate 5, on which a connecting piece 3 is arranged, the top of the connecting piece 3 is connected to one end of a leveling steel sheet 1 through a connecting bolt 2, and the leveling steel sheet 1 rotates around the connecting bolt 2 to adjust the angle, and the other end of the leveling steel sheet 1 is connected to the surface of a K block 6 after adjusting the angle.
[0007] A plurality of wedge-shaped grooves 7 are arranged on the pipe segments around the K block 6, and the wedge-shaped grooves 7 are symmetrically distributed with the wedge-shaped grooves inside the K block 6. There are fastening bolts 4 in the wedge-shaped grooves 7, and the fastening bolts 4 are aligned with the bolt holes reserved in the device bottom plate 5.
[0008] The bottom plate 5 is a square steel plate, which is welded and fixed to the connecting piece 3, and the lower opening is connected and fixed to the fastening bolt 4 in the wedge-shaped groove 7.
[0009] The connecting bolt 2 is a hexagonal bolt.
[0010] The leveling steel sheet 1 is adjusted in angle by the connecting bolts 2 of the connecting piece 3, and is in direct contact with the K block 6, so that the K block 6 is fixed to a suitable embedding depth, ensuring that the K block 6 is smoothly connected to the adjacent pipe segment.
[0011] Beneficial effects of the utility model:
[0012] 1. The utility model provides an installation and positioning device for a tunnel segment K block, especially an embedding position of the K block, which effectively connects the K block with the surrounding segments smoothly and ensures that the inner arc surface of the segment is flat.
[0013] 2. By setting wedge-shaped grooves and using segment leveling steel sheets, the utility model achieves a smoother and more reliable segment connection, significantly reduces the annular seam misalignment caused by segment grouting, controls the floating of the segments, thereby ensuring the coordinated adjustment of the segment posture, shield machine posture and tunnel design axis, and ensuring the quality of shield construction.
[0014] 3. The device has a simple structure, and most of the components are bolted together for easy operation; it is low-cost and not easy to damage, and will not affect the segment structure, making it economical and practical during construction. The device is suitable for assembling various types of tunnel segments and K blocks at different positions. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 Schematic diagram of K block positioning.
[0016] Figure 2 Schematic diagram of the front and side of the leveling device.
[0017] Figure 3 This is the working principle diagram of the leveling device. DETAILED DESCRIPTION
[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0019] like Figure 1 As shown, the device includes a base plate 5, a connecting piece 3 and a leveling steel sheet 1, wherein the connecting piece 3 is connected to the leveling steel sheet 1 by a connecting bolt 2, and the leveling steel sheet 1 can freely adjust the angle until it is tightly fastened to the surface of the K block 6; the connecting piece 3 and the base plate 5 are welded and cast in the factory, and bolt holes are reserved on the base plate 5, which is fixed in the wedge groove 7 by fastening bolts 4.
[0020] The connecting piece 3 and the bottom plate 5 are welded in advance and fixed in a suitable position by the bottom plate 5. The connecting piece 3 and the leveling steel sheet 1 are connected by hexagonal bolts.
[0021] like Figure 2 As shown, six wedge-shaped grooves 7 are arranged on the pipe segments around the K block 6 and are opposite to the inside of the K block. The specific shape and position are shown in the figure. There are fastening bolts 4 inside. They are aligned with the reserved bolt holes on the bottom plate 5 of the device, and the nuts are tightened with a wrench to fix them in the wedge-shaped grooves 7.
[0022] like Figure 3 As shown, after the device is fixed in the wedge-shaped groove 7, the leveling steel sheet 1 is pressed while tightening the connecting bolts 2 on the connecting piece 3, and the angle of the leveling steel sheet 1 is fixed so that it is close to the inner arc surface of the pipe segment. Through the six leveling steel sheets 1, the K block 6 is smoothly connected to the inner arc surfaces of the surrounding pipe segments, and the hidden danger of misalignment when assembling the K block is controlled.
[0023] The working principle of this utility model:
[0024] First, fix the bottom plate 5 in the wedge-shaped groove 7 around the K block 6 by fastening bolts, and adjust the connecting piece 3 and the leveling steel plate 1 to the vertical direction along the inner arc surface of the tunnel so that the device does not affect the assembly of the segments; after the overlap positioning of the K block 6 is completed, place one side of the leveling steel plate 1 close to the inner arc surface of the shield tunnel, apply pressure to the leveling steel plate 1 along the normal direction of the K block, and tighten the nut with a wrench until the leveling steel plate 1 is tightly buckled on the K block 6, ensuring that the levelness of the K block 6 and the surrounding segments is maintained within the required range, and no segment misalignment will occur due to grouting.
Claims
1. A tunnel segment assembly and leveling device, characterized in that: The invention comprises a bottom plate (5), a connecting piece (3) is arranged on the bottom plate (5), the top of the connecting piece (3) is connected to one end of a leveling steel sheet (1) via a connecting bolt (2), the leveling steel sheet (1) rotates around the connecting bolt (2) to adjust the angle, and the other end of the leveling steel sheet (1) is connected to the surface of a K block (6) after adjusting the angle.
2. A tunnel segment assembly and leveling device according to claim 1, characterized in that: A plurality of wedge-shaped grooves (7) are arranged on the pipe segments around the K block (6), the wedge-shaped grooves (7) are symmetrically distributed with the wedge-shaped grooves inside the K block (6), there are fastening bolts (4) in the wedge-shaped grooves (7), and the fastening bolts (4) are aligned with the bolt holes reserved on the device bottom plate (5).
3. The tunnel segment assembly and leveling device according to claim 1, characterized in that: The bottom plate (5) is a square steel plate, which is welded and fixed to the connecting piece (3), and has a hole at the bottom that is connected and fixed to the wedge-shaped groove (7) by a fastening bolt (4).
4. The tunnel segment assembly and leveling device according to claim 1, characterized in that: The connecting bolt (2) is a hexagonal bolt.