Novel shield segment bolt hole waterproof device

Abstract

The utility model discloses a novel shield segment bolt hole waterproof device, and relates to the technical field of shield segment waterproofing. The device comprises a pipe piece, a sealing gasket and a hollow screw rod, a bolt hole is formed in the pipe piece, and the bolt hole and the hollow screw rod are used for splicing the shield pipe piece and the adjacent shield pipe piece; nuts are arranged at the two ends of the hollow screw rod; any end of the hollow screw rod is provided with a rubber plug; the sealing gasket is arranged between the connected pipe pieces; caulking seams are formed in the sides, close to the tunnel, of the connected pipe pieces. By the adoption of the novel shield segment bolt hole waterproof device, underground water can be effectively prevented from permeating into a tunnel along the surface of the screw through the nut, and the hidden danger of water seepage caused by a gap between the screw and the bolt hole is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the shield segment waterproof field, concretely to a new -type shield segment bolt hole waterproof device. BACKGROUND

[0002] With the urbanization process accelerates, underground space is paid more and more attention and develops rapidly. Shield method is the most common method in underground engineering construction. Shield tunnel is an underground passage built by shield method, and is widely used in urban subway, railway, highway, municipal pipeline engineering and other engineering because of its obvious advantages, and provides important support for urban traffic development and infrastructure construction. Shield tunnel is an assembled structure connected by segments and bolts. The most worried thing of underground engineering is leakage problem. In the research and design of shield tunnel waterproof, in addition to the adjacent segment joint, the bolt hole is also a potential water seepage point, and the current waterproof research and measures for the bolt hole are not many.

[0003] Before the utility model, the Chinese authorized utility model patent "shield tunnel segment bolt hole waterproof structure" (patent application number: 202320200630.8) discloses a bolt hole waterproof structure including shield tunnel segment, bolt, washer, nut, first waterproof sealing sleeve, first waterproof sealing pad and second waterproof sealing pad, etc. The first waterproof sealing pad structure and the second waterproof sealing pad are filled into the connecting hole by rotating the nut, the gap in the bolt hole is filled, and the waterproof effect is improved. But this technology does not fully consider the aging of the waterproof sealing pad and the loosening of the bolt which may occur in the later period, and also does not fundamentally solve the water seepage hidden danger existing between the screw rod and the bolt hole. There is certain limitation in engineering application.

[0004] Therefore, it is particularly necessary to provide a new type of shield segment bolt hole waterproof device which can effectively prevent underground water from penetrating into the tunnel along the screw rod surface through the nut. UTILITY MODEL CONTENTS

[0005] The utility model discloses a new type of shield segment bolt hole waterproof device, which can effectively prevent underground water from penetrating into the tunnel along the screw rod surface through the nut, and solve the water seepage hidden danger existing between the screw rod and the bolt hole.

[0006] To achieve the above technical purposes and effects, the utility model realizes the following technical scheme:

[0007] The utility model provides a new type shield segment bolt hole waterproof device, including segment, sealing gasket, hollow screw, the segment is provided with bolt hole, the bolt hole and hollow screw splice the shield segment with adjacent shield segment, the hollow screw is provided with nut at both ends, the hollow screw is equipped with rubber plug any end, the sealing gasket is set up between the segment, and the segment is set up caulking near the tunnel.

[0008] Preferably, the hollow screw is uniformly provided with several grouting holes.

[0009] Preferably, the hollow screw is uniformly provided with several grouting holes.

[0010] Preferably, the hollow screw is uniformly provided with several grouting holes.

[0011] Preferably, the hollow screw is uniformly provided with several grouting holes.

[0012] The utility model discloses a new type shield segment bolt hole waterproof device, and its working steps are as follows:

[0013] S1, preparation: the on-site construction personnel clean up the garbage and accumulated water of shield tail installation part, check whether the model and quality of segment are consistent with design document, and whether the pasting of sealing gasket meets the standard requirement;

[0014] S2, segment transportation: hoist segment from ground to shield machine, and transport segment to the designated position through transportation equipment;

[0015] S3, segment assembly: first from bottom, according to the principle of " first splicing standard block, then splicing adjacent block, finally top block", carry out splicing, and always measure in the splicing process, to ensure that segment flatness, advance quantity and ovality meet the design requirement;

[0016] S4, bolt connection and grouting: after segment assembly, promptly tighten longitudinal and annular bolt, utilize grouting machine to carry out pressure grouting through hollow screw, and the slurry fills along hollow screw first, then flows to the gap between hollow screw and bolt hole through the grouting hole of hollow screw body under the grouting pressure, fills the groove on segment simultaneously, when grouting quantity or grouting pressure reaches the design requirement, stop grouting and plug rubber plug, at this moment, the bolt hole after grouting is filled densely, and from inside to outside, it is slurry, hollow screw, EPDM rubber pad, slurry, segment.

[0017] Therefore, the utility model provides a new type shield segment bolt hole waterproof device, and its beneficial effects are as follows:

[0018] (1) The utility model discloses a hollow screw rod is carried out compaction grouting, has guaranteed the filling of the gap between screw rod and bolt hole, has fundamentally solved the water seepage hidden danger of the gap between screw rod and bolt hole.

[0019] (2) The utility model discloses a hollow screw rod body is provided with a EPDM pad, and the waterproof structure keeps certain toughness to adapt to the displacement between segments in later operation.

[0020] The technical scheme of the utility model will be described further in detail below with the drawings and embodiments. DRAWINGS

[0021] Figure 1 It is the overall structure schematic diagram of a novel shield segment bolt hole waterproof device.

[0022] REFERENCE NUMERALS

[0023] 1, segment;2, nut;3, bolt hole;4, recess;5, caulking;6, sealing pad;7, grouting hole;8, EPDM pad;9, rubber plug;10, hollow screw rod;11, grouting machine. DETAILED DESCRIPTION

[0024] In the description of the utility model, it is understood that the orientation or position relation indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like is the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore it can not be understood as a limitation to the utility model.

[0025] Unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as the usual meaning understood by the person skilled in the art in the field to which the present application belongs.

[0026] As Figure 1 shown, the utility model provides a novel shield segment bolt hole waterproof device, including segment 1, sealing pad 6, hollow screw rod 10, the bolt hole 3 of being provided in segment 1, recess 4 is provided in the inside of bolt hole 3 in segment 1, the design of recess makes segment installation and disassembly more convenient and fast, improves construction efficiency, can further enhance the overall structural strength of segment in the specific construction process, resists external pressure and deformation.

[0027] Bolt hole 3 and hollow screw rod 10 splice shield segment and adjacent shield segment, and the two ends of hollow screw rod 10 are provided with nut 2, and bolt hole provides accurate position for the penetration of bolt, ensures that shield segment can be accurately aligned, avoids splicing deviation.

[0028] The bolt hole and the hollow screw rod ensure the firm connection between the segments, the hollow screw rod being a special form of the bolt, the hollow design of the hollow screw rod being capable of better transmitting torque when being tightened, so that the connection between the segments is more firm and reliable; the hollow screw rod 10 is provided with a rubber plug 9 at any end, a plurality of grouting holes 7 are uniformly arranged on the whole body of the hollow screw rod 10, and a three-element ethylene propylene rubber pad 8 is arranged at the grouting hole 7 of the whole body of the hollow screw rod 10, so that the seepage of underground water or other liquid into the joint between the segments is effectively prevented, and the waterproof performance of the tunnel is improved; the three-element ethylene propylene rubber pad and the inner side of the bolt hole have a gap, and the gap is filled with slurry in the later period; the grouting hole 7 and the groove 4 are arranged in a staggered manner along the circumferential direction of the bolt hole 3; the sealing pad 6 is arranged between the connected segments 1; and the connected segments 1 are provided with a caulking 5 close to the tunnel.

[0029] The specific working steps of the embodiment of the novel shield segment bolt hole waterproof device are as follows:

[0030] S1, preparation work: the site construction personnel clean up the garbage and accumulated water at the shield tail mounting position, check whether the type and quality of the segment are consistent with the design file, and whether the pasting of the sealing pad meets the specification requirements;

[0031] S2, segment transportation: the segment is hoisted from the ground to the shield machine, and the segment is transported to the designated position by the transportation equipment;

[0032] S3, segment assembly: starting from the bottom, the segments are spliced according to the principle of "splicing standard blocks first, then splicing adjacent blocks, and finally splicing top blocks", and measurement is performed at all times during the splicing process to ensure that the flatness, advance amount and ellipticity of the segments meet the design requirements;

[0033] S4, bolt connection and grouting: after the segment assembly is completed, the longitudinal and circumferential bolts are tightened in time, the grouting machine 11 is used to perform pressure grouting through the hollow screw rod 10, the slurry is first filled along the hollow screw rod 10, and then flows to the gap between the hollow screw rod 10 and the bolt hole 3 through the grouting hole 7 of the body of the hollow screw rod 10 under the grouting pressure, simultaneously fills the groove 4 on the segment, and when the grouting amount or grouting pressure reaches the design requirement, the grouting is stopped and the rubber plug 9 is plugged.

[0034] At this time, the bolt hole 3 is filled densely, and from inside to outside, there are slurry, hollow screw rod 10, three-element ethylene propylene rubber pad 8, slurry and segment 1.

[0035] Therefore, the novel shield segment bolt hole waterproof device fundamentally solves the seepage hidden danger existing between the screw rod and the bolt hole, and the waterproof structure is kept a certain toughness to adapt to the possible displacement between the segments in the later operation by pre-arranging a three-element ethylene propylene rubber pad on the body of the hollow screw rod.

[0036] It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application but not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can still be modified or replaced equivalently, and these modifications or equivalent replacements should not make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present application.

Claims

1. A new type of shield segment bolt hole waterproofing device, characterized in that, The utility model relates to a shield segment, sealing gasket and hollow screw, the bolt hole is arranged in the segment, the bolt hole and hollow screw splice the shield segment with adjacent shield segment, the hollow screw is provided with nut at both ends, the hollow screw is provided with rubber plug at either end, the sealing gasket is arranged between the connected segment, and the connected segment is provided with caulking near the tunnel.

2. The new bolt hole waterproofing device for shield segment according to claim 1, characterized in that, The hollow screw is uniformly provided with a plurality of grouting holes.

3. The new bolt hole waterproofing device for shield segment according to claim 2, characterized in that, The hollow screw is provided with a three-element ethylene-propylene rubber pad except the grouting hole.

4. The new bolt hole waterproofing device for shield segment according to claim 2, characterized in that, The bolt hole in the segment is provided with a groove.

5. The new bolt hole waterproofing device for shield segment according to claim 4, characterized in that, The grouting hole and the groove are provided with a plurality of grouting holes and grooves, and the grouting holes and grooves are arranged in the circumferential direction of the bolt hole.

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