CN112761683A - Inclined bolt hole waterproof structure of high-water-head shield tunnel segment - Google Patents
Inclined bolt hole waterproof structure of high-water-head shield tunnel segment Download PDFInfo
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- CN112761683A CN112761683A CN202110156092.2A CN202110156092A CN112761683A CN 112761683 A CN112761683 A CN 112761683A CN 202110156092 A CN202110156092 A CN 202110156092A CN 112761683 A CN112761683 A CN 112761683A
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- waterproof
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- waterproof groove
- bolt hole
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- 229920001971 elastomer Polymers 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000010276 construction Methods 0.000 claims abstract description 8
- 229920002943 EPDM rubber Polymers 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007175 bidirectional communication Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/385—Sealing means positioned between adjacent lining members
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/083—Methods or devices for joining adjacent concrete segments
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model provides a high water head shield tunnel segment's oblique bolt hole waterproof construction which characterized in that: the socket section of the inclined bolt hole is prefabricated into a first concave waterproof groove at the joint part of the first duct piece; the first waterproof groove is in a round table shape with a large outer part and a small inner part, and the bottom surface of the first waterproof groove close to the inner side is in a semi-water-drop-shaped curved surface; the straight-through section of the inclined bolt hole is prefabricated into a concave waterproof groove II at the joint part of the duct piece II; the waterproof groove II is in a round table shape with a large outer part and a small inner part, and the bottom surface of the waterproof groove II close to the inner side is a plane; the first waterproof groove is tightly adhered to one side of the bolt rubber pad, the other side of the bolt rubber pad is tightly embedded in the second waterproof groove of the second duct piece, and the inclined bolt penetrates through the through hole of the bolt rubber pad. The waterproof structure can effectively improve the waterproof performance of the high-water-head shield tunnel, better ensure the safe and reliable operation of the shield tunnel, and has simple structure and convenient installation.
Description
Technical Field
The invention relates to a shield tunnel segment inclined bolt hole waterproof structure.
Background
In recent years, urban rail transit networks in China are continuously improved, and the construction of subway tunnels is hot. The shield tunnel is widely adopted in the current subway tunnel engineering due to the advantages of high mechanization degree, quick construction, small environmental influence and the like. The lining structure of the shield tunnel is characterized in that arc-shaped duct pieces are spliced into duct piece rings along the circumferential direction through bolts, and the duct piece rings are longitudinally spliced through inter-ring bolts to form the tunnel lining. Therefore, seams exist between the segments of the shield tunnel in both circumferential direction and longitudinal direction; and a gap exists between the bolt and the oblique bolt hole. The shield tunnel is buried underground and surrounded by underground water, and the seams and gaps of the segment lining structure easily cause water leakage of the tunnel, so that the shield tunnel becomes a main disease influencing the safe operation of the shield tunnel.
The inclined bolt is a common joint form for assembling shield segments at present, and is different from the characteristic of bidirectional communication of a straight inclined bolt and a bent inclined bolt, one end of the inclined bolt is a closed threaded section, and the other end of the inclined bolt is a socket section of an inner arc surface of a straight tube segment ring, so that the socket section of the inner arc surface of the straight tube segment ring is a focus of water leakage. For the inclined bolt high-water-head shield tunnel with abundant underground water and high water pressure, the joint waterproof structure is that two waterproof sealing gaskets are arranged inside and outside the joint of the pipe piece; meanwhile, the inclined bolt holes between the two waterproof sealing gaskets need to be subjected to waterproof treatment. The existing method for waterproof treatment of the inclined bolt hole is to use a grouting method to plug and waterproof the gap between the socket section of the inclined bolt hole and the bolt. The operation is troublesome, the waterproof effect is achieved only after grouting is finished, and water seepage before grouting can hinder construction operation and influence the construction progress of the shield tunnel; and the concrete formed after the slurry is cured has the seepage-proofing performance to be improved, and the waterproof effect of the tunnel is poor. The oblique bolt holes are subjected to waterproof treatment, and waterproof gaskets can be arranged at the nuts at the end parts of the oblique bolts to carry out waterproof plugging on the oblique bolt holes; but because the waterproof gasket has small volume and thin thickness, the waterproof capability of the waterproof gasket is far lower than that of the two sealing gaskets; and in the bolted connection assembling process of the duct piece, the gasket is easily damaged due to dynamic friction and dynamic pressure when the nut is twisted. The high-head shield tunnel is high in water pressure, and the outer waterproof sealing gasket is easy to waterproof and lose efficacy due to factors such as segment construction errors and the like; in case outer waterproof sealing gasket became invalid, the rivers in the tunnel outside passed through the seam, and the gap of rethread inclined bolt hole socket section and bolt, the seepage gets into inside the tunnel, makes the inner waterproof sealing gasket of section of jurisdiction can't exert its due waterproof effect, leads to the waterproof performance in tunnel poor.
Disclosure of Invention
The invention aims to provide a water-proof structure for an inclined bolt hole of a high-head shield tunnel segment, which can effectively improve the water-proof performance of the high-head shield tunnel, better ensure the safe and reliable operation of the shield tunnel, and has simple structure and convenient installation.
The invention realizes the technical scheme that the invention adopts a high-water-head shield tunnel segment inclined bolt hole waterproof structure, which comprises a segment I and a segment II which are adjacent, wherein the inclined bolt hole is composed of a non-threaded socket section penetrating through the segment I, a non-threaded through section in the segment II and a threaded section with internal threads in the segment II, an inclined bolt is inserted into the inclined bolt hole, and the external threads at the front end of the inclined bolt are matched with the internal threads of the threaded section, and the invention is characterized in that:
the socket section of the inclined bolt hole is prefabricated into a first concave waterproof groove at the joint part of the first duct piece; the first waterproof groove is in a round table shape with a large outer part and a small inner part, and the bottom surface of the first waterproof groove close to the inner side is in a semi-water-drop-shaped curved surface; the straight-through section of the inclined bolt hole is prefabricated into a concave waterproof groove II at the joint part of the duct piece II; the waterproof groove II is in a round table shape with a large outer part and a small inner part, and the bottom surface of the waterproof groove II close to the inner side is a plane;
the first waterproof groove is tightly adhered to one side of the bolt rubber pad, the other side of the bolt rubber pad is tightly embedded in the second waterproof groove of the second duct piece, and the inclined bolt penetrates through the through hole of the bolt rubber pad.
The using method and the working principle of the invention are as follows:
the water drop-shaped end of the bolt rubber pad is tightly adhered to a first waterproof groove of the first duct piece by waterproof glue, the first duct piece and a second duct piece are aligned and tensioned, and then the inclined bolt firstly passes through a socket section of an inclined bolt hole on the inner surface of the first duct piece and then passes through a through hole of the bolt rubber pad and then passes through a straight section of the inclined bolt hole of the second duct piece to reach a thread section of the inclined bolt hole; finally, screwing a nut at the rear end of the inclined bolt to enable the external thread of the inclined bolt to be tightly matched with the internal thread of the thread section; namely, the assembly and fixation of the duct piece I and the duct piece II are completed. Meanwhile, the bolt rubber pad is compressed in the circumferential direction and expanded in the radial direction of the tunnel, so that two side faces of the bolt rubber pad are respectively tightly abutted to the water-drop-shaped face of the first waterproof groove and the plane of the second waterproof groove to form a compacted sealing face, and the bolt rubber pad is completely compacted and waterproof-sealed between a segment joint and a gap of the inclined bolt hole.
Compared with the prior art, the invention has the beneficial effects that:
firstly, bolt rubber pads, a first waterproof groove and a second waterproof groove are additionally arranged at the joint of two adjacent duct pieces; when two adjacent duct pieces are assembled and fixed by adopting oblique bolts, the bolt rubber pads are compacted and sealed at the duct piece joint and the gap between the oblique bolt holes. When the outer channel waterproof sealing gasket close to the outer side (outer arc surface) of the duct piece is broken through by high head water pressure, water flowing into the joint of the duct piece is blocked by the inner channel waterproof sealing gasket and cannot directly leak into the tunnel; and the water is blocked by the bolt rubber pad, and cannot seep into the socket section of the inclined bolt hole and then seep into the tunnel through the socket section. Because the bolt rubber pad is thick and wide round platform shape, both sides are embedded in the special prefabricated waterproof groove one, two, its is bulky, and elasticity is strong, and what receive in the process of assembling is the static pressure, and is not fragile to promote tunnel waterproof reliability by a wide margin, waterproof performance is good.
And secondly, the matching surface of the bolt rubber pad and the waterproof groove I is a water-drop-shaped curved surface, so that the position with the largest stress is exactly the thickest part of the water-drop-shaped curved surface of the bolt rubber pad when the inclined bolt holes are assembled, the compressive strength and the extrusion stress of the bolt rubber pad are improved, the sealing contact surface of the bolt rubber pad and the inclined bolt holes is firmer, and the sealing waterproof effect is better.
Compared with a bolt hole grouting method, the method has the advantages that the bolt rubber pad is used for plugging the oblique bolt hole at the joint, the expected waterproof effect can be achieved immediately after the segment is installed, the operation is simple and convenient, the assembly time is saved, and the construction speed is accelerated; and the bolt rubber pad has good anti-seepage performance, and the waterproof performance of the tunnel is also improved.
Further, a bolt waterproof gasket is arranged at the nut at the rear end of the oblique bolt.
Therefore, the waterproof effect of the shield tunnel is further ensured.
Furthermore, the bolt rubber pad is made of ethylene propylene diene monomer.
The ethylene propylene diene monomer rubber has good elasticity and high strength, and the rubber pad prepared from the ethylene propylene diene monomer rubber has good compression resistance and waterproof performance and long service life.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic cross-sectional view of a segment before assembling;
FIG. 2 is a schematic left-side view (A direction) of the structure of FIG. 1;
fig. 3 is a schematic cross-sectional view of the assembled duct pieces according to the first embodiment.
In the figure, the reference numeral 3a denotes an outer waterproof gasket of the duct piece, and 3b denotes an inner waterproof gasket of the duct piece.
Detailed Description
Example one
As shown in fig. 1 to 3, a specific embodiment of the present invention is a water-proof structure for a diagonal bolt hole of a high-head shield tunnel segment, which includes a segment one 1 and a segment two 2 that are adjacent to each other, the diagonal bolt hole is composed of a threadless socket section 4a that penetrates the segment one 1, a threadless through section 4b in the segment two 2, and a threaded section 4c that has an internal thread in the segment two 2, a diagonal bolt 5 is inserted into the diagonal bolt hole, and an external thread at the front end of the diagonal bolt 5 is matched with the internal thread of the threaded section 4b, and the water-proof structure is characterized in that:
the socket section 4a of the inclined bolt hole is prefabricated into a concave waterproof groove I6 a at the joint part of the duct piece I1; the waterproof groove I6 a is in a round table shape with a large outer part and a small inner part, and the bottom surface of the waterproof groove I6 a close to the inner side is in a semi-water-drop-shaped curved surface; a straight-through section 4b of the inclined bolt hole is prefabricated into a concave waterproof groove II 6b at the joint part of the duct piece II 2; the waterproof groove II 6b is in a circular truncated cone shape with a large outer part and a small inner part, and the bottom surface of the waterproof groove II 6b close to the inner side is a plane;
the first waterproof groove 6a is tightly adhered to one side of the bolt rubber pad 7, the other side of the bolt rubber pad 7 is tightly embedded in the second waterproof groove 6b of the second duct piece 2, and the inclined bolt 5 penetrates through the through hole 7a of the bolt rubber pad 7.
In this example, a bolt waterproof washer 5a is provided at the nut at the rear end of the oblique bolt 5.
The bolt rubber pad 7 of this example is made of ethylene propylene diene monomer.
Claims (3)
1. The utility model provides a high water head shield tunnel section of jurisdiction's oblique bolt hole waterproof construction, including adjacent section of jurisdiction one (1) and section of jurisdiction two (2), the oblique bolt hole is by running through unthreaded socket section (4a) of section of jurisdiction one (1), unthreaded direct section (4b) in section of jurisdiction two (2) and have internal screw thread section (4c) in section of jurisdiction two (2) to constitute, oblique bolt (5) insert the oblique bolt hole, and the external screw thread of oblique bolt (5) front end and the interior screw-thread fit of screw thread section (4b), its characterized in that:
the socket section (4a) of the inclined bolt hole is prefabricated into a first concave waterproof groove (6a) at the joint part of the duct piece I (1); the first waterproof groove (6a) is in a round table shape with a large outer part and a small inner part, and the bottom surface of the first waterproof groove (6a) close to the inner side is in a semi-water-drop-shaped curved surface; a straight-through section (4b) of the inclined bolt hole is prefabricated into a second concave waterproof groove (6b) at the joint part of the second duct piece (2); the waterproof groove II (6b) is in a circular truncated cone shape with a large outer side and a small inner side, and the bottom surface of the waterproof groove II (6b) close to the inner side is a plane;
the waterproof groove I (6a) is tightly adhered to one side of the bolt rubber pad (7), the other side of the bolt rubber pad (7) is tightly embedded into the waterproof groove II (6b) of the duct piece II (2), and the inclined bolt (5) penetrates through the through hole (7a) of the bolt rubber pad (7).
2. The inclined bolt hole waterproof structure of the high head shield tunnel segment as claimed in claim 1, wherein: and a bolt waterproof gasket (5a) is arranged at the nut at the rear end of the inclined bolt (5).
3. The inclined bolt hole waterproof structure of the high head shield tunnel segment as claimed in claim 1, wherein: the bolt rubber pad (7) is made of ethylene propylene diene monomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110156092.2A CN112761683A (en) | 2021-02-04 | 2021-02-04 | Inclined bolt hole waterproof structure of high-water-head shield tunnel segment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110156092.2A CN112761683A (en) | 2021-02-04 | 2021-02-04 | Inclined bolt hole waterproof structure of high-water-head shield tunnel segment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112761683A true CN112761683A (en) | 2021-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110156092.2A Pending CN112761683A (en) | 2021-02-04 | 2021-02-04 | Inclined bolt hole waterproof structure of high-water-head shield tunnel segment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112761683A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294172A (en) * | 2021-06-08 | 2021-08-24 | 中铁隧道勘测设计院有限公司 | High-water-pressure-resistant shield segment bolt hole combined type sealing structure |
| CN113653511A (en) * | 2021-09-01 | 2021-11-16 | 珠海华发城市研究院有限公司 | Leaking stoppage and grouting method for shield tunnel joint |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0274799A (en) * | 1988-09-09 | 1990-03-14 | Yoshiaki Nakajima | Cut-off structure, construction method therefor and unit segment for cut-off |
| JP2002030892A (en) * | 2000-07-13 | 2002-01-31 | Ohbayashi Corp | Segment |
| KR20040108305A (en) * | 2003-07-07 | 2004-12-23 | 이광주 | Water Tight Bolt For Tunnel Segment Assembling |
| CN101380789A (en) * | 2008-10-13 | 2009-03-11 | 马英 | Sealing mechanism of hub cap die and sealing method |
| CN203271763U (en) * | 2013-02-07 | 2013-11-06 | 广东省水利电力勘测设计研究院 | Lining segment for sea-crossing shield tunnel |
| CN203856484U (en) * | 2014-05-23 | 2014-10-01 | 常州工程职业技术学院 | Tunnel segment sealing structure |
| CN106050275A (en) * | 2016-07-13 | 2016-10-26 | 同济大学 | Sealing waterproof device for bolt hole of shield tunnel duct pieces |
| CN106121688A (en) * | 2016-08-23 | 2016-11-16 | 中铁第四勘察设计院集团有限公司 | A kind of shield tunnel segment bolt hole water proof structure and construction method |
| CN110185468A (en) * | 2019-07-05 | 2019-08-30 | 东北大学 | A kind of duct pieces of shield tunnel contact surface bolt hole package water-tight device |
| CN110805460A (en) * | 2019-10-10 | 2020-02-18 | 天津大学前沿技术研究院有限公司 | Waterproof sealing method for bolt hole of shield tunnel segment |
-
2021
- 2021-02-04 CN CN202110156092.2A patent/CN112761683A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0274799A (en) * | 1988-09-09 | 1990-03-14 | Yoshiaki Nakajima | Cut-off structure, construction method therefor and unit segment for cut-off |
| JP2002030892A (en) * | 2000-07-13 | 2002-01-31 | Ohbayashi Corp | Segment |
| KR20040108305A (en) * | 2003-07-07 | 2004-12-23 | 이광주 | Water Tight Bolt For Tunnel Segment Assembling |
| CN101380789A (en) * | 2008-10-13 | 2009-03-11 | 马英 | Sealing mechanism of hub cap die and sealing method |
| CN203271763U (en) * | 2013-02-07 | 2013-11-06 | 广东省水利电力勘测设计研究院 | Lining segment for sea-crossing shield tunnel |
| CN203856484U (en) * | 2014-05-23 | 2014-10-01 | 常州工程职业技术学院 | Tunnel segment sealing structure |
| CN106050275A (en) * | 2016-07-13 | 2016-10-26 | 同济大学 | Sealing waterproof device for bolt hole of shield tunnel duct pieces |
| CN106121688A (en) * | 2016-08-23 | 2016-11-16 | 中铁第四勘察设计院集团有限公司 | A kind of shield tunnel segment bolt hole water proof structure and construction method |
| CN110185468A (en) * | 2019-07-05 | 2019-08-30 | 东北大学 | A kind of duct pieces of shield tunnel contact surface bolt hole package water-tight device |
| CN110805460A (en) * | 2019-10-10 | 2020-02-18 | 天津大学前沿技术研究院有限公司 | Waterproof sealing method for bolt hole of shield tunnel segment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294172A (en) * | 2021-06-08 | 2021-08-24 | 中铁隧道勘测设计院有限公司 | High-water-pressure-resistant shield segment bolt hole combined type sealing structure |
| CN113653511A (en) * | 2021-09-01 | 2021-11-16 | 珠海华发城市研究院有限公司 | Leaking stoppage and grouting method for shield tunnel joint |
| CN113653511B (en) * | 2021-09-01 | 2023-12-29 | 珠海华发城市研究院有限公司 | Shield tunnel joint plugging grouting method |
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Application publication date: 20210507 |
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| RJ01 | Rejection of invention patent application after publication |