Flexible slab staggering prevention prefabricated assembled concrete mid-partition wall structure

Abstract

The utility model relates to the technical field of tunnel construction, in particular to a flexible slab staggering prevention prefabricated assembled concrete mid-partition wall structure, which is characterized in that flexible connecting structures are arranged on two sides of the top of a mid-partition wall section, and each flexible connecting structure comprises a limiting plate; the limiting plate is fixedly connected with the duct piece, a gap is formed among the top of the middle partition wall, the inner wall of the duct piece and the limiting plate, and the gap is filled with a flexible filling layer; matched bosses are arranged at the adjacent positions of every two adjacent mid-partition wall sections, the adjacent mid-partition wall sections are fixedly connected into a whole through connecting bolts penetrating through the bosses, and L-shaped slab staggering prevention structures are arranged at the bottoms of the mid-partition wall sections. The partition wall unit has the advantages that the partition wall unit is suitable for splicing a plurality of partition wall units according to different requirements of a large-diameter shield tunnel, the construction speed is high, labor force is saved, and the stress safety of duct pieces is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a flexible anti-misalignment prefabricated assembled concrete middle partition wall structure. Background Art

[0002] At present, my country's tunnel industry is booming, and the proportion of deep-buried and large-diameter shield tunnels is gradually increasing. At present, the tunnel partition wall structure mainly adopts a construction method that combines the lower part with the opening piece and cast-in-place reinforcement connection and the upper part prefabrication. The tunnel segment and the partition wall are connected by rigid connection, and the partition walls are connected by concave-convex structure. The traditional method requires the completion of the preliminary construction and a certain strength before subsequent construction can be carried out. It generally requires a long construction period, a large amount of manpower investment, and poor construction conditions. After the tunnel converges and deforms, the rigid connection has the problem of complex force between the partition wall and the segment, which affects the safety of the segment. The concave-convex tenon connection has problems such as difficulty in later maintenance and replacement of the partition wall.

[0003] At present, prefabricated and assembled structures have been widely promoted in the field of construction. Among them, Chinese patent CN202210999754.7 discloses a structure and construction method for rigid connection between the middle partition wall and the pipe segment of a tunnel; CN202223190116.5 discloses a fully prefabricated internal structure of a large-section shield tunnel, which is implemented in the Shanghai Airport Link Line; however, the above patents disclose a semi-rigid connection structure between the tunnel and the middle partition wall, and do not disclose the longitudinal connection structure of the tunnel. There are still problems with the connection safety between the middle partition wall and the pipe segment, the difficulty of construction due to large misalignment of the opening parts during the construction of the middle partition wall, and the maintenance, repair and replacement of the middle partition wall in the later stage. Summary of the invention

[0004] The purpose of the utility model is to provide a flexible anti-misalignment prefabricated assembled concrete middle partition wall structure based on the above-mentioned deficiencies of the prior art, by setting a flexible connection structure between the tunnel and the middle partition wall, a tunnel longitudinal connection structure and a lower anti-misalignment structure, to achieve flexible splicing of the prefabricated concrete middle partition wall and anti-misalignment.

[0005] The purpose of this utility model is achieved by the following technical solutions:

[0006] A flexible prefabricated assembled concrete middle partition wall structure with anti-misalignment, comprising a plurality of middle partition wall segments arranged longitudinally along a tunnel, wherein each of the middle partition wall segments is connected to a pipe segment respectively, and adjacent middle partition wall segments are connected to each other, and are characterized in that: flexible connection structures are arranged on both sides of the top of the middle partition wall segment, and the flexible connection structure comprises a limiting plate, which is fixedly connected to the pipe segment and forms a gap between the top of the middle partition wall, the inner wall of the pipe segment and the limiting plate, and the gap is filled with a flexible filling layer; matching bosses are arranged at the adjacent positions of two adjacent middle partition wall segments, and the adjacent middle partition wall segments are fixedly connected to form a whole by connecting bolts passing through the bosses, and an L-shaped anti-misalignment structure is arranged at the bottom of the middle partition wall segment.

[0007] An embedded steel sleeve is arranged on the pipe segment along the longitudinal direction of the tunnel outside the middle partition wall, and the limit plate is fixedly connected to the embedded steel sleeve through the cooperation of connecting bolts and connecting nuts.

[0008] The limiting plate is provided with a reinforcing structure, and both ends of the reinforcing structure are connected to the limiting plate.

[0009] The boss is provided with a middle partition wall connection hole and a middle partition wall bolt hole, the middle partition wall connection hole passes through the boss, and the middle partition wall bolt hole is communicated with the middle partition wall connection hole and is a countersunk structure.

[0010] The middle partition wall connection holes and the middle partition wall bolt holes are arranged horizontally or vertically.

[0011] The utility model has the advantages of being suitable for splicing a plurality of partition wall units in a large-diameter shield tunnel according to different requirements, having a fast construction speed, saving labor, and being beneficial to the safety of the force on the pipe segments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is an enlarged view of the flexible connection structure in the utility model;

[0014] Figure 3 A bottom view of the connection between the flexible connection structure and the pipe segment in the utility model;

[0015] Figure 4 It is a side view of the longitudinal connection structure in the utility model;

[0016] Figure 5 It is a top view of the longitudinal connection structure of the utility model;

[0017] Figure 6 This is a large-scale drawing of the opening of the first middle partition wall in the longitudinal connection structure of the utility model;

[0018] Figure 7 This is a large-scale drawing of the opening of the second middle partition wall in the longitudinal connection structure of the utility model. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the features of the present invention and other related features through embodiments in conjunction with the accompanying drawings to facilitate understanding by technicians in the same industry:

[0020] like Figure 1-7 As shown, the marks in the figure respectively represent: flexible connection structure 1, middle partition wall 2, pipe segment 3, limit plate 11, reinforcement structure 12, connecting bolt 13, connecting nut 14, flexible filling layer 15, first middle partition wall 21, first middle partition wall boss 211, first middle partition wall connecting hole 212, first middle partition wall bolt hole 213, middle partition wall connecting bolt 214, middle partition wall connecting nut 215, second middle partition wall 22, second middle partition wall boss 221, second middle partition wall connecting hole 222, second middle partition wall bolt hole 223, first middle partition wall L-shaped anti-misalignment structure 23, second middle partition wall L-shaped anti-misalignment structure 24.

[0021] Example: Figures 1 to 7 As shown, the flexible anti-misalignment platform prefabricated assembled concrete middle partition wall structure in this embodiment includes a prefabricated concrete middle partition wall 2 for assembling inside the tunnel segment. The prefabricated concrete middle partition wall 2 is arranged in sections along the longitudinal direction of the tunnel, that is, along the longitudinal direction of the tunnel, the middle partition wall 2 is composed of a number of prefabricated concrete middle partition wall segments.

[0022] In this embodiment, if Figure 1 As shown, there is a flexible connection structure 1 between the middle partition wall 2 and the pipe segment 3. The flexible connection structure 1 is arranged along the longitudinal direction of the tunnel and is fixedly connected to the pipe segment 3 and is located outside the buffer space above the middle partition wall 2. Figure 2 As shown, the limit plate 11 is connected to the pipe segment 3 by bolt connection bolts 13 on both sides of the top of the middle partition wall 2. A flexible filling layer 15 is provided between the gap formed by the top of the middle partition wall 2, the pipe segment 3 and the limit plate 11 to buffer the effect between the tunnel convergence deformation and the middle partition wall 2; the flexible filling layer 15 can preferably be made of rock wool to effectively solve the deformation and disaster prevention problems.

[0023] In this embodiment, if Figure 2 As shown, a reinforcing structure 12 is provided on the limit plate 11 and arranged at a fixed interval along the longitudinal direction of the tunnel. Both ends of the reinforcing structure 12 are reliably connected to the limit plate 11 to improve the strength of the limit plate 11, thereby increasing the connection performance between the middle partition wall 2 and the pipe segment 3.

[0024] In this embodiment, if Figure 3As shown, embedded steel sleeves are arranged at equal intervals on the pipe segments 3 along the longitudinal direction of the line on the outside of the middle partition wall 2. The reliable connection between the limit plate 11 and the pipe segment 3 can be ensured by passing the connecting bolts 13 through the limit plate 11 and screwing them into the embedded steel sleeves, and then installing the connecting nuts 14.

[0025] Combination Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, this embodiment takes two adjacent middle partition wall segments, the first middle partition wall 21 and the second middle partition wall 22, as examples to illustrate the longitudinal connection structure between the middle partition walls.

[0026] A first middle partition wall boss 211 and a second middle partition wall boss 221 are respectively arranged vertically on both sides of the first middle partition wall 21 and the second middle partition wall 22. The first middle partition wall boss 211 and the second middle partition wall boss 222 are opposite to each other and can be overlapped, which can effectively solve the convenience of later maintenance and replacement of the middle partition wall 2.

[0027] A first middle partition wall connecting hole 212 and a first middle partition wall bolt hole 213 are provided on the first middle partition wall boss 211, and a matching second middle partition wall connecting hole 222 and a second middle partition wall bolt hole 223 are provided on the second middle partition wall boss 221. The first middle partition wall 21 and the second middle partition wall 22 are reliably connected by connecting bolts 214 and connecting nuts 215 to form a whole.

[0028] In this embodiment, the first middle partition wall connection hole 212 and the second middle partition wall connection hole 222 are implemented in the form of embedded sleeves, that is, embedded sleeves are set at the designed position during the prefabrication process of the first middle partition wall 21 and the second middle partition wall 22, and the interior of the embedded sleeves forms connection holes.

[0029] Combination Figure 6 and Figure 7 As shown, in this embodiment, the first middle partition wall connection hole 212 and the first middle partition wall bolt hole 213 are arranged horizontally, while the second middle partition wall connection hole 222 and the second middle partition wall bolt hole 223 are arranged vertically. In this way, when bolt connection is performed, the vertical height adjustment between the middle partition wall segments can be facilitated to improve the installation accuracy.

[0030] like Figure 4 As shown, a first middle partition wall L-shaped anti-misalignment structure 23 is set at the bottom of the first middle partition wall, and a second middle partition wall L-shaped anti-misalignment structure 24 is set at the bottom of the second middle partition wall. The L-shaped anti-misalignment structure can effectively avoid the problem that the middle partition wall cannot be installed after the opening piece is misaligned to a large extent.

[0031] Although the above embodiments have described the concepts and embodiments of the purpose of the utility model in detail with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the utility model without departing from the scope of the claims, so they are not described one by one here.

Claims

1. A flexible anti-misalignment prefabricated assembled concrete middle partition wall structure, comprising a plurality of middle partition wall segments arranged along the longitudinal direction of the tunnel, each of the middle partition wall segments is connected to the pipe segment, and adjacent middle partition wall segments are connected, characterized in that: Flexible connection structures are provided on both sides of the top of the middle partition wall segment, and the flexible connection structure includes a limit plate, which is fixedly connected to the pipe segment and forms a gap between the top of the middle partition wall, the inner wall of the pipe segment and the limit plate, and the gap is filled with a flexible filling layer; matching bosses are provided at the adjacent positions of two adjacent middle partition wall segments, and the adjacent middle partition wall segments are fixedly connected to form a whole by connecting bolts passing through the bosses, and an L-shaped anti-misalignment structure is provided at the bottom of the middle partition wall segment.

2. According to claim 1, a flexible anti-misalignment prefabricated assembled concrete partition wall structure is characterized by: An embedded steel sleeve is arranged on the pipe segment along the longitudinal direction of the tunnel outside the middle partition wall, and the limit plate is fixedly connected to the embedded steel sleeve through the cooperation of connecting bolts and connecting nuts.

3. A flexible anti-misalignment prefabricated assembled concrete partition wall structure according to claim 1 or 2, characterized in that: The limiting plate is provided with a reinforcement structure, and both ends of the reinforcement structure are connected to the limiting plate.

4. The flexible anti-misalignment prefabricated assembled concrete partition wall structure according to claim 1 is characterized by: The boss is provided with a middle partition wall connection hole and a middle partition wall bolt hole, the middle partition wall connection hole passes through the boss, and the middle partition wall bolt hole is communicated with the middle partition wall connection hole and is a countersunk structure.

5. The flexible anti-misalignment prefabricated assembled concrete partition wall structure according to claim 4 is characterized by: The middle partition wall connection holes and the middle partition wall bolt holes are arranged horizontally or vertically.

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