Concrete segment repairing method

Abstract

The invention relates to the technical field of shield segment repairing, in particular to a concrete segment repairing method, which adopts block type steel pipe sheets including a first steel pipe sheet, a second steel pipe sheet, a third steel pipe sheet, a fourth steel pipe sheet, a fifth steel pipe sheet, a sixth steel pipe sheet, a seventh steel pipe sheet, an eighth steel pipe sheet and a ninth steel pipe sheet for repairing. Wherein the first steel pipe piece, the second steel pipe piece, the third steel pipe piece, the fourth steel pipe piece, the fifth steel pipe piece, the sixth steel pipe piece, the seventh steel pipe piece and the eighth steel pipe piece are processed into double-sided wedge-shaped blocks, the ninth steel pipe piece is processed into four-sided wedge-shaped blocks, and the steel pipe pieces are mutually fastened through matching of wedge-shaped structures. The method has the advantages that high-quality repair of the concrete duct piece is achieved, and the obvious reinforcing and supporting effect on the existing shield tunnel duct piece is achieved; the prefabrication degree is high, and the construction efficiency is improved; the structure is simple, reasonable, convenient to construct and suitable for popularization.

Description

Technical Field

[0001] The invention relates to the technical field of shield segment repair, and in particular to a concrete segment repair method. Background Art

[0002] At present, with the development of shield tunneling, more and more shield segment tunnel structures are being used. Such tunnel structures often use prefabricated reinforced concrete segment structures, which are assembled with staggered joints. With the operation of the tunnel structure, its structure will inevitably be damaged to a certain extent, especially when the tunnel structure is used as a mountain tunnel, where rock strata are often broken and the water head pressure is high, and the prefabricated shield segments are often deformed or even damaged.

[0003] Therefore, a repair method for such situations is urgently needed. Summary of the invention

[0004] The purpose of the present invention is to provide a method for repairing concrete pipe segments based on the above-mentioned deficiencies of the prior art, by setting a block-type steel pipe segment structure at the position to be repaired of the concrete pipe segment, and tightening the steel pipe segments through the wedge-shaped surface action between the steel pipe segments, thereby ensuring the connection performance between the steel pipe segment and the concrete pipe segment and improving the repair effect.

[0005] The purpose of the present invention is achieved by the following technical solutions: A method for repairing a concrete pipe segment, characterized in that the method comprises the following steps: Determine the repair area of ​​the concrete pipe segment to be repaired, and chisel away part of the normal concrete pipe segment around the repair area to form an embedding opening for embedding the segmented steel pipe segment; Constructing segmented steel pipe segments in the area to be repaired, the segmented steel pipe segments including a first steel pipe segment, a second steel pipe segment, a third steel pipe segment, a fourth steel pipe segment, a fifth steel pipe segment, a sixth steel pipe segment, a seventh steel pipe segment, an eighth steel pipe segment, and a ninth steel pipe segment; Installing the first steel segment, the second steel segment, the fourth steel segment and the fifth steel segment between the normal concrete segment and the concrete segment to be repaired; The third steel segment is installed between the first steel segment and the second steel segment, and the first and second steel segments are pressed against the normal concrete segments on both sides by the third steel segment; the sixth steel segment is installed between the fourth and fifth steel segments, and the fourth and fifth steel segments are pressed against the normal concrete segments on both sides by the sixth steel segment; Install the seventh steel segment between the first steel segment and the fourth steel segment, and use the seventh steel segment to press the first and fourth steel segments against the steel segment to be repaired; install the eighth steel segment between the second steel segment and the fifth steel segment, and use the eighth steel segment to press the second and fifth steel segments against the steel segment to be repaired; The ninth steel pipe segment is arranged at the center of each steel pipe segment, and the steel pipe segments around it are pressed tightly.

[0006] Embedded steel plates are respectively arranged on the first steel pipe segment, the second steel pipe segment, the fourth steel pipe segment and the fifth steel pipe segment, and the embedded steel plates correspond to the embedded openings on the concrete pipe segment to be repaired or the normal concrete pipe segment.

[0007] A tensioning structure is respectively provided at the third steel pipe segment, the sixth steel pipe segment, the seventh steel pipe segment and the eighth steel pipe segment. The tensioning structure includes a tensioning steel plate and a tensioning bolt, and the tensioning bolts are used to achieve the tightening of each steel pipe segment.

[0008] The third steel pipe segment, the sixth steel pipe segment, the seventh steel pipe segment and the eighth steel pipe segment are tightened in a clockwise order.

[0009] After all the steel pipe segments are installed, the steel pipe segments are connected with bolts.

[0010] After each steel pipe segment is tightened, it is welded to form an integral force-bearing structure.

[0011] Before processing each steel pipe segment, the area to be repaired is measured first, and then processing is carried out according to the measured dimensions. The welds between each steel pipe segment and the longitudinal seams of the segment are staggered.

[0012] The advantages of the present invention are: achieving high-quality repair of concrete segments, and playing a significant reinforcing and supporting role for existing shield tunnel segments; a high degree of prefabrication, improving construction efficiency; a simple and reasonable structure, convenient construction, and suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 Middle AA section view; Figure 3 for Figure 1 Middle BB section view. DETAILED DESCRIPTION

[0014] The features of the present invention and other related features are further described in detail below through embodiments in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art: like Figure 1-3As shown in the figure, the numbers 1-12 and Ⅰ-Ⅲ respectively represent: the first steel pipe segment 1, the second steel pipe segment 2, the third steel pipe segment 3, the fourth steel pipe segment 4, the fifth steel pipe segment 5, the sixth steel pipe segment 6, the seventh steel pipe segment 7, the eighth steel pipe segment 8, the ninth steel pipe segment 9, the embedded steel plate 10, the tensioning steel plate 11, the tensioning bolt 12; the first concrete pipe segment Ⅰ, the second concrete pipe segment Ⅱ, the third concrete pipe segment Ⅲ.

[0015] Example: Figures 1 to 3 As shown, the concrete segment repair method in this embodiment is used to repair the concrete segment to ensure its structural performance. Figure 1 For example, the first concrete segment I, the second concrete segment II, and the third concrete segment III are three-ring concrete segments that are adjacent and staggered. The first concrete segment I and the third concrete segment III are segments in normal condition and can be used normally, while the second concrete segment II located between the two is a segment to be repaired, which is partially damaged due to various adverse conditions. Therefore, the second concrete segment II is repaired.

[0016] like Figure 1 As shown, in this embodiment, a block-type steel pipe segment is used to repair a part of the second concrete pipe segment II. The block-type steel pipe segment includes a first steel pipe segment 1, a second steel pipe segment 2, a third steel pipe segment 3, a fourth steel pipe segment 4, a fifth steel pipe segment 5, a sixth steel pipe segment 6, a seventh steel pipe segment 7, an eighth steel pipe segment 8, and a ninth steel pipe segment 9. Among them, the first steel pipe segment 1, the second steel pipe segment 2, the third steel pipe segment 3, the fourth steel pipe segment 4, the fifth steel pipe segment 5, the sixth steel pipe segment 6, the seventh steel pipe segment 7, and the eighth steel pipe segment 8 are processed into double-sided wedge blocks, and the ninth steel pipe segment 9 is processed into a four-sided wedge block. The mutual fastening of the steel pipe segments is achieved through the cooperation of the wedge structure, and the steel pipe segments that play a reinforcing support role can be firmly installed in the repair position of the second concrete pipe segment II.

[0017] Specifically, combined Figures 1 to 3 As shown, the first steel segment 1, the second steel segment 2, the fourth steel segment 4 and the fifth steel segment 5 match the position to be repaired of the second concrete segment II. An embedded steel plate 10 is provided at the position of each steel segment adjacent to the concrete segment so that each steel segment can form an effective and stable connection with the concrete segment. Figure 1 As shown in the example, the first steel segment 1 and the fourth steel segment 4 are respectively provided with embedded steel plates embedded in the first concrete segment I and the second concrete segment II, and the second steel segment 2 and the fifth steel segment 5 are respectively provided with embedded steel plates embedded in the second concrete segment II and the third concrete segment III.

[0018] Combination Figure 1 and Figure 2As shown, the third steel pipe segment 3 is arranged between the first steel pipe segment 1 and the second steel pipe segment 2, and matching wedge structures are respectively arranged between the third steel pipe segment 3 and the first steel pipe segment 1 and between the third steel pipe segment 3 and the second steel pipe segment 2, so that the third steel pipe segment 3 can be inserted into the position between the first steel pipe segment 1 and the second steel pipe segment 2, and the first steel pipe segment 1 and the second steel pipe segment 2 can be pushed toward the positions of the first concrete pipe segment I and the third concrete pipe segment III on both sides respectively through the force transmitted by the wedge surface, thereby improving the connection performance between the first steel pipe segment 1 and the first concrete pipe segment I and the connection performance between the second concrete pipe segment II and the third concrete pipe segment III.

[0019] Similarly, the sixth steel segment 6 is arranged between the fourth steel segment 4 and the fifth steel segment 5, and matching wedge structures are respectively arranged between the sixth steel segment 6 and the fourth steel segment 4 and between the sixth steel segment 6 and the fifth steel segment 5 to improve the connection performance between the fourth steel segment 4 and the first concrete segment I and between the fifth steel segment 5 and the third concrete segment III.

[0020] At this time, the first steel pipe segment 1, the second steel pipe segment 2, the fourth steel pipe segment 4 and the fifth steel pipe segment 5 are effectively tightly connected with the corresponding first concrete pipe segment I or the third concrete pipe segment III.

[0021] The seventh steel pipe segment 7 is arranged between the first steel pipe segment 1 and the fourth steel pipe segment 4, and matching wedge structures are respectively arranged between the seventh steel pipe segment 7 and the first steel pipe segment 1 and between the seventh steel pipe segment 7 and the fourth steel pipe segment 4, so that the seventh steel pipe segment 7 can be inserted into the position between the first steel pipe segment 1 and the fourth steel pipe segment 4, and the first steel pipe segment 1 and the fourth steel pipe segment 4 can be pushed toward the position of the second concrete pipe segment II on both sides through the force transmitted by the wedge surface, thereby improving the connection performance between the first steel pipe segment 1, the fourth steel pipe segment 4 and the second concrete pipe segment II.

[0022] Similarly, the eighth steel pipe segment 8 is arranged between the second steel pipe segment 2 and the fifth steel pipe segment 5, and matching wedge structures are arranged between the eighth steel pipe segment 8 and the second steel pipe segment 2 and between the eighth steel pipe segment 8 and the fifth steel pipe segment 5, respectively, to improve the connection performance between the second steel pipe segment 2, the fifth steel pipe segment 5 and the second concrete pipe segment II.

[0023] At this time, the first steel pipe segment 1, the second steel pipe segment 2, the fourth steel pipe segment 4 and the fifth steel pipe segment 5 are effectively tightened and connected with the corresponding first concrete pipe segment I or third concrete pipe segment III in one direction by using the pushing effect of the third concrete pipe segment 3 and the sixth steel pipe segment 5, and are effectively tightened and connected with the second concrete pipe segment II in the other direction by using the tightening effect of the seventh steel pipe segment 7 and the eighth steel pipe segment 8.

[0024] The ninth steel pipe segment 9 with a four-sided wedge-shaped structure is arranged at the center of each steel pipe segment, and wedge-shaped surfaces are formed around it and cooperate with the adjacent steel pipe segments, so that the ninth steel pipe segment 9 can tighten the steel pipe segments around it, especially the third steel pipe segment 3, the sixth steel pipe segment 6, the seventh steel pipe segment 7, and the eighth steel pipe segment 8, so that the block-type steel pipe segments can be firmly installed at the repair position of the second concrete pipe segment II.

[0025] Combination Figure 2 and Figure 3 As shown, in order to further improve the tightening effect of the third steel pipe segment 3, the sixth steel pipe segment 6, the seventh steel pipe segment 7 and the eighth steel pipe segment 8 on the corresponding remaining steel pipe segments, the third steel pipe segment 3, the sixth steel pipe segment 6, the seventh steel pipe segment 7 and the eighth steel pipe segment 8 are respectively provided with tensioning structures.

[0026] by Figure 2 For example, the tensioning structure includes a tensioning steel plate 11 and a tensioning bolt 12, wherein the tensioning steel plate 11 is located between the first steel pipe segment 1 and the second steel pipe segment 2 on both sides. Since the first steel pipe segment 1 and the second steel pipe segment 2 both have embedded steel plates 10, the first concrete pipe segment I and the third concrete pipe segment III provide a reaction force when the third steel pipe segment 3 is inserted and tightened. The third steel pipe segment 3 can be firmly inserted between the first steel pipe segment 1 and the second steel pipe segment 2 through the tensioning bolt 12, thereby improving the tightening effect. The sixth steel pipe segment 6 is similar to the third steel pipe segment 3.

[0027] by Figure 3 For example, the eighth steel tube segment 8 also improves the tensioning effect between the second steel tube segment 2 and the fifth steel tube segment 5 on both sides through the tensioning structure composed of the tensioning steel plate 11 and the tensioning bolts 12. The seventh steel tube segment 7 and the eighth steel tube segment 8 are the same.

[0028] When applied, this embodiment includes the following process: The steel pipe segments are installed in blocks, and the installation order is first the upper and lower sides (the first steel pipe segment 1, the second steel pipe segment 2, the third steel pipe segment 3, the fourth steel pipe segment 4, the fifth steel pipe segment 5, the sixth steel pipe segment 6), and then the middle (the seventh steel pipe segment 7, the eighth steel pipe segment 8, and the ninth steel pipe segment 9). After all the steel pipe segments are installed, the steel pipe segment bolts are connected, and the tensioning bolts 12 of the third steel pipe segment 3, the seventh steel pipe segment 7, the sixth steel pipe segment 6, and the eighth steel pipe segment 8 are tightened in clockwise order, and the torque is stopped when it reaches 500N.m. During the tightening process, the steel pipe segments are knocked and vibrated, and after tightening, the joints are welded as a whole to ensure that a good force system is formed inside, which plays a role in strengthening and supporting the tunnel. CO2 gas shielded welding is used for welding, and groove welding is used for steel plate welding. After each steel pipe segment is tightened, it is welded to form an overall force structure.

[0029] In the specific implementation of this embodiment: before processing the block-type steel pipe segments, the area where the steel pipe segments need to be installed is first measured, and then processing is performed according to the measured dimensions. The welds between the steel plates and the longitudinal seams of the pipe segments are staggered to ensure anti-seepage performance.

[0030] Although the above embodiments have described in detail the concepts and embodiments of the present invention with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and changes can still be made to the present invention without departing from the scope of the claims, so they are not described one by one here.

Claims

1. A method for repairing a concrete segment, characterized in that: The repair method includes the following steps: Determine the repair area of ​​the concrete pipe segment to be repaired, and chisel away part of the normal concrete pipe segment around the repair area to form an embedding opening for embedding the segmented steel pipe segment; Constructing segmented steel pipe segments in the area to be repaired, the segmented steel pipe segments including a first steel pipe segment, a second steel pipe segment, a third steel pipe segment, a fourth steel pipe segment, a fifth steel pipe segment, a sixth steel pipe segment, a seventh steel pipe segment, an eighth steel pipe segment, and a ninth steel pipe segment; Installing the first steel segment, the second steel segment, the fourth steel segment and the fifth steel segment between the normal concrete segment and the concrete segment to be repaired; The third steel segment is installed between the first steel segment and the second steel segment, and the first and second steel segments are pressed against the normal concrete segments on both sides by the third steel segment; the sixth steel segment is installed between the fourth and fifth steel segments, and the fourth and fifth steel segments are pressed against the normal concrete segments on both sides by the sixth steel segment; Install the seventh steel segment between the first steel segment and the fourth steel segment, and use the seventh steel segment to press the first and fourth steel segments against the steel segment to be repaired; install the eighth steel segment between the second steel segment and the fifth steel segment, and use the eighth steel segment to press the second and fifth steel segments against the steel segment to be repaired; The ninth steel pipe segment is arranged at the center of each steel pipe segment, and the steel pipe segments around it are pressed tightly.

2. A method for repairing a concrete pipe segment according to claim 1, characterized in that: Embedded steel plates are respectively arranged on the first steel pipe segment, the second steel pipe segment, the fourth steel pipe segment and the fifth steel pipe segment, and the embedded steel plates correspond to the embedded openings on the concrete pipe segment to be repaired or the normal concrete pipe segment.

3. A method for repairing a concrete pipe segment according to claim 1, characterized in that: A tensioning structure is respectively provided at the third steel pipe segment, the sixth steel pipe segment, the seventh steel pipe segment and the eighth steel pipe segment. The tensioning structure includes a tensioning steel plate and a tensioning bolt, and the tensioning bolts are used to achieve the tightening of each steel pipe segment.

4. A method for repairing a concrete pipe segment according to claim 3, characterized in that: The third steel pipe segment, the sixth steel pipe segment, the seventh steel pipe segment and the eighth steel pipe segment are tightened in a clockwise order.

5. A method for repairing a concrete pipe segment according to claim 1, characterized in that: After all the steel pipe segments are installed, the steel pipe segments are connected with bolts.

6. A method for repairing a concrete pipe segment according to claim 1, characterized in that: After each steel pipe segment is tightened, it is welded to form an integral force-bearing structure.

7. A method for repairing a concrete pipe segment according to claim 1, characterized in that: Before processing each steel pipe segment, the area to be repaired is measured first, and then processing is carried out according to the measured dimensions. The welds between each steel pipe segment and the longitudinal seams of the segment are staggered.

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