CN114810134A - Connecting structure of shield segments of earthquake active fault zone and implementation method - Google Patents
Connecting structure of shield segments of earthquake active fault zone and implementation method Download PDFInfo
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- CN114810134A CN114810134A CN202210322248.4A CN202210322248A CN114810134A CN 114810134 A CN114810134 A CN 114810134A CN 202210322248 A CN202210322248 A CN 202210322248A CN 114810134 A CN114810134 A CN 114810134A
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- 229910000831 Steel Inorganic materials 0.000 claims description 11
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- 230000009471 action Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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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
- E21D11/04—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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Abstract
The invention provides a shield segment connecting structure of an earthquake active fault zone, which comprises a plurality of shield segments positioned in the earthquake active fault zone, wherein adjacent shield segments are connected through inclined bolts and straight bolts along the length direction of a shield tunnel, and the inclined bolts and the straight bolts are distributed at intervals along the circumferential direction of the shield tunnel. The invention also provides an implementation method of the shield segment connecting structure of the earthquake active fault zone. According to the shield segment connecting structure for the earthquake active fault zone, provided by the invention, the straight bolt connection is additionally arranged in the segment, so that the connecting strength of the joint is increased, the impact force generated by fault dislocation under the action of a strong earthquake can be effectively resisted, and the deformation resistance of the segment in the active fault influence zone is improved.
Description
Technical Field
The invention relates to the field of tunnel engineering, in particular to a shield segment connecting structure of an earthquake active fault zone and an implementation method.
Background
With the rapid development of economy and society in China, large underwater tunnel engineering enters a rapid development period, shield tunnels are widely applied due to the characteristics of safety, rapidness, science and technology and the like, the construction of the shield tunnels is gradually increased, and the construction conditions are more and more complex. In general, shield tunnel segment structure need not to take special antidetonation measure. However, in recent years, with the increasing number of shield tunnels built, part of the tunnels are even positioned in high seismic intensity areas of 8 degrees or above and active fault zones. The common bolt connection can not meet the requirements of safety and durability of the shield tunnel under the action of strong earthquake in complex geology and high-intensity earthquake areas, and special anti-seismic measures must be adopted.
At present, the anti-seismic method and measure of the shield tunnel at home and abroad mainly aim at the weak stratum, namely, the foundation reinforcement is carried out on the weak stratum along the line, and the seismic response of the shield tunnel (mainly reducing the seismic displacement of the shield tunnel) is reduced.
Therefore, there is a need to design a new connecting structure of shield segments for earthquake active fault zone and an implementation method thereof, so as to overcome the above problems.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a shield segment connecting structure of an earthquake active fault zone and an implementation method thereof, on one hand, a high-strength pull rod (bolt) is added in a segment structure to resist fault dislocation pulling force; on the other hand, the material of the pull rod (bolt) has stronger elasticity, and partial stretching deformation is eliminated by utilizing the elasticity characteristic of the pull rod (bolt), so that the bolt is prevented from being broken and damaged. The present invention solves at least some of the problems of the prior art.
The invention is realized by the following steps:
the invention provides a shield segment connecting structure of an earthquake active fault zone, which comprises a plurality of shield segments positioned in the earthquake active fault zone, wherein adjacent shield segments are connected through inclined bolts and straight bolts along the length direction of a shield tunnel, and the inclined bolts and the straight bolts are distributed at intervals along the circumferential direction of the shield tunnel.
Furthermore, along the circumferential direction of the shield tunnel, oblique bolts are arranged on two sides of the straight bolts.
Further, the inclined bolts are high-strength inclined bolts with elasticity, and the straight bolts are high-strength straight bolts with elasticity.
Further, along shield tunnel length direction, the both ends of shield pipe piece all are equipped with the straight bolt through hole that supplies straight bolt to run through, still be equipped with straight bolt hand hole on the shield pipe piece, two straight bolt through hole and one the straight bolt hand hole corresponds and sets up side by side, two the straight bolt through hole all communicates with the straight bolt hand hole that corresponds, and straight bolt stretches into in the straight bolt hand hole and through straight bolt nut fixed connection.
Furthermore, a pre-buried steel plate is arranged in the pipe piece at the hand hole of the straight bolt.
Further, oblique bolt hand hole, the oblique bolt through hole that supplies oblique bolt to run through have been seted up to the one end of shield structure section of jurisdiction, oblique bolt through hole with oblique bolt hand hole one-to-one, oblique bolt through hole and the oblique bolt hand hole intercommunication that corresponds, the other end of shield structure section of jurisdiction is equipped with oblique bolt embedded nut, and oblique bolt embedded nut is used for the fixed oblique bolt of wearing out from the oblique bolt through hole of adjacent shield structure section of jurisdiction.
The invention also provides an implementation method of the shield segment connecting structure of the earthquake active fault zone, which comprises the following steps: comprises that
S1, butting adjacent rings of shield segments through circular seams;
s2, penetrating a straight bolt through the straight bolt through holes of the two adjacent rings, and penetrating an inclined bolt through the inclined bolt through hole from an inclined bolt hand hole to be screwed into the inclined bolt embedded nut;
s3, fixing two ends of the straight bolt in the straight bolt hand holes of two adjacent rings respectively by adopting a straight bolt nut, and fastening the oblique bolt through the oblique bolt embedded nut to realize effective connection of the adjacent rings of the shield segment.
The invention has the following beneficial effects:
1. according to the shield segment connecting structure for the earthquake active fault zone, provided by the invention, the straight bolt connection is additionally arranged in the segment, so that the connecting strength of the joint is increased, the impact force generated by fault dislocation under the action of a strong earthquake can be effectively resisted, and the deformation resistance of the segment in the active fault influence zone is improved.
2. According to the shield segment connecting structure for the earthquake movable fault zone, the bolts are made of high-strength steel with high elasticity, connection rigidity is improved, and meanwhile, partial stretching deformation is eliminated by using the elastic characteristics of the bolts, so that the influence of dislocation of the fault zone is weakened, the bolts are prevented from being broken and damaged, and the overall stability of the segment is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a view of a bolt hole arrangement provided by an embodiment of the present invention;
FIG. 2 is a diagram of a tube sheet connection configuration provided by an embodiment of the present invention;
FIG. 3 is an enlarged view of the left half of FIG. 2 according to an embodiment of the present invention;
FIG. 4 is a schematic view of a circumferential seam skew bolt connection provided in accordance with an embodiment of the present invention;
fig. 5 is a schematic view of a straight circular seam bolt connection provided in an embodiment of the present invention.
The labels in the figure are: 1-shield segment, 2-high-strength oblique bolt, 3-high-strength straight bolt, 4-oblique bolt washer, 5-straight bolt washer, 6-oblique bolt embedded nut, 7-straight bolt nut, 8-oblique bolt through hole, 9-straight bolt through hole, 10-oblique bolt hand hole, 11-straight bolt hand hole, 12-circular seam, 13-oblique bolt hexagon head, 14-embedded steel plate and 15-longitudinal seam.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-5, an embodiment of the present invention provides a shield segment connection structure for an earthquake active fault zone, which includes a plurality of shield segments 1 located in the earthquake active fault zone, wherein, along the length direction of a shield tunnel (longitudinal direction of the shield tunnel), adjacent shield segments 1 are connected by high-strength oblique bolts 2 and high-strength straight bolts 3, and the high-strength oblique bolts 2 and the high-strength straight bolts 3 are distributed at intervals along the circumferential direction of the shield tunnel (circumferential direction of the shield tunnel). According to the shield segment connecting structure for the earthquake active fault zone, provided by the invention, the straight bolt connection is additionally arranged in the segment, so that the connecting strength of the joint is increased, the impact force generated by fault dislocation under the action of a strong earthquake can be effectively resisted, and the deformation resistance of the segment in the active fault influence zone is improved. According to the shield segment connecting structure for the earthquake movable fault zone, provided by the invention, the bolts are made of high-strength steel with strong elasticity, so that the connection rigidity is increased, and meanwhile, the elastic characteristics of the bolts are utilized to eliminate partial stretching deformation, further, the influence of the dislocation of the fault zone is weakened, the bolts are prevented from being broken and damaged, and the overall stability of the segment is improved
And high-strength oblique bolts 2 are arranged on two sides of the high-strength straight bolt 3 along the circumferential direction of the shield tunnel.
Along shield tunnel length direction, the both ends of shield section of jurisdiction 1 all are equipped with the straight bolt through hole 9 that the straight bolt of high strength 3 runs through, still be equipped with straight bolt hand hole 11, two on the shield section of jurisdiction 1 straight bolt through hole 9 and one straight bolt hand hole 11 corresponds and sets up side by side, two straight bolt through hole 9 all communicates with the straight bolt hand hole 11 that corresponds, and the straight bolt of high strength 3 stretches into in the straight bolt hand hole 11 and through straight bolt nut 7 fixed connection. The segment at the position of the straight bolt hand hole 11 is internally provided with an embedded steel plate 14. The straight bolt washer 5 is arranged between the straight bolt nut 7 and the shield segment 1. The through holes 9 of the straight bolts are reserved holes, so that the high-strength straight bolts 3 can conveniently penetrate through and connect two adjacent pipe pieces.
Oblique bolt hand hole 10, the oblique bolt through hole 8 that high strength oblique bolt 2 runs through are seted up to shield segment 1's one end, oblique bolt through hole 8 with oblique bolt hand hole 10 one-to-one, oblique bolt through hole 8 communicates with the oblique bolt hand hole 10 that corresponds, shield segment 1's the other end is equipped with oblique bolt embedded nut 6, and oblique bolt embedded nut 6 is used for fixing the high strength oblique bolt 2 of wearing out from the oblique bolt through hole 8 of adjacent shield segment, and oblique bolt hexagon head 13 is located oblique bolt hand hole 10, and oblique bolt packing ring 4 sets up between oblique bolt hexagon head 13 and shield segment 1. The inclined bolt through hole 8 is a reserved hole, so that the high-strength inclined bolt 2 can conveniently penetrate through and connect two adjacent pipe pieces.
The embodiment of the invention provides an implementation method of a shield segment connecting structure of an earthquake active fault zone, which comprises the following steps:
s1, abutting adjacent rings of shield segments through a circular seam 12;
s2, penetrating the high-strength straight bolt 3 through the straight bolt through holes 9 of the two adjacent rings, and penetrating the high-strength oblique bolt 2 through the oblique bolt through hole 8 from the oblique bolt hand hole 10 to be screwed into the oblique bolt embedded nut 6;
s3, fixing the two ends of the high-strength straight bolt 3 in the straight bolt hand holes 11 of the two adjacent rings respectively by adopting the straight bolt nut 7, and fastening the high-strength oblique bolt 2 through the oblique bolt embedded nut 6 to realize the effective connection of the adjacent rings of the shield segment.
The invention provides a shield segment connecting structure of an earthquake movable fault zone, which comprises a shield segment 1, high-strength inclined bolts 2, high-strength straight bolts 3, inclined bolt washers 4, straight bolt washers 5, inclined bolt embedded nuts 6, straight bolt nuts 7, inclined bolt through holes 8, straight bolt through holes 9, inclined bolt hand holes 10, straight bolt hand holes 11, annular seams 12, inclined bolt hexagonal heads 13, embedded steel plates 14 and longitudinal seams 15.
The shield structure section of jurisdiction 1 is bolt hole through structure, and two adjacent ring canal pieces of activity fault influence district section vertically pass through high strength oblique bolt 2 and high strength straight bolt 3 and connect, and at circumferential weld 12 department, high strength straight bolt 3 passes straight bolt through hole 9 and stretches into and passes through straight bolt nut 7 fixed connection in the straight bolt hand hole 11, and high strength oblique bolt 2 passes oblique bolt hand hole 10 in proper order, oblique bolt through hole 8 and with the pre-buried oblique bolt in adjacent section of jurisdiction pre-buried nut 6 fixed connection.
The material of high strength oblique bolt 2 with the material of high strength straight bolt 3 is the high strength steel that has stronger elasticity, and every ring of 12 junctions in circumferential weld sets up high strength oblique bolt 2 and high strength straight bolt 3. The inclined bolt washer 4 and the straight bolt washer 5 are both steel washers, the inclined bolt washer 4 is arranged between the inclined bolt hexagon head 13 and the shield segment 1, and the straight bolt washer 5 is arranged between the straight bolt nut 7 and the shield segment 1. The straight bolt nut 7 is a common steel nut.
The inclined bolt through hole 8 and the straight bolt through hole 9 are reserved holes for the high-strength inclined bolt 2 and the high-strength straight bolt 3 to penetrate through conveniently, and the inclined bolt through hole 8 is a cylindrical reserved hole with a small lower part and a large joint; the straight bolt hole 9 is a through reserved hole with the same size as the whole ring.
Meanwhile, the invention provides an implementation process of the shield segment connecting structure of the earthquake active fault zone, which comprises the following steps:
s1: adjacent rings of shield segments are butted by a circumferential seam 12.
S2: the high-strength oblique bolt 2 is sleeved into the oblique bolt washer 4, penetrates through the oblique bolt through hole 8 from the oblique bolt hand hole 10 and is screwed into the oblique bolt embedded nut 6, and then the connection of the two ring pipe pieces is achieved.
S3: the method comprises the steps of enabling high-strength straight bolts 3 to penetrate into a shield segment 1 from the foremost side of the shield segment 1 to adjacent ring straight bolts through straight bolt through holes 9 to reserve hand holes 11, respectively sleeving straight bolt washers 5 at two ends of each high-strength straight bolt 3, and then respectively screwing the high-strength straight bolts 3 at the straight bolt hand holes 11 by using straight bolt nuts 7 (pre-embedded steel plates 14 are arranged in the segments at the straight bolt hand holes 11).
S4: the high-strength oblique bolts 2 are fastened through the oblique bolt embedded nuts 6, the high-strength straight bolts 3 are fastened through the straight bolt nuts 7, so that the design requirements are met, and the effective connection of the adjacent rings of the shield segment 1 is realized.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides an earthquake activity fault zone shield constructs section of jurisdiction connection structure which characterized in that: the shield tunnel comprises a plurality of shield segments located in earthquake active fault zones, wherein adjacent shield segments are connected through oblique bolts and straight bolts along the length direction of the shield tunnel, and the oblique bolts and the straight bolts are distributed at intervals along the circumferential direction of the shield tunnel.
2. The seismic active fault zone shield segment connection structure of claim 1, wherein: and oblique bolts are arranged on two sides of the straight bolts along the circumferential direction of the shield tunnel.
3. The seismic active fault zone shield segment connection structure of claim 1, wherein: the inclined bolts are high-strength elastic inclined bolts, and the straight bolts are high-strength elastic straight bolts.
4. The seismic active fault zone shield segment connection structure of claim 1, wherein: along shield tunnel length direction, the both ends of shield pipe piece all are equipped with the straight bolt through hole that supplies straight bolt to run through, still be equipped with straight bolt hand hole on the shield pipe piece, two straight bolt through hole and one the straight bolt hand hole corresponds and sets up side by side, two the straight bolt through hole all communicates with the straight bolt hand hole that corresponds, and straight bolt stretches into in the straight bolt hand hole and through straight bolt nut fixed connection.
5. The seismic active fault zone shield segment connection structure of claim 4, wherein: the pipe piece at the hand hole of the straight bolt is internally provided with an embedded steel plate.
6. The seismic active fault zone shield segment connection structure of claim 1, wherein: oblique bolt hand hole, the oblique bolt through hole that supplies oblique bolt to run through are seted up to the one end of shield section of jurisdiction, oblique bolt through hole with oblique bolt hand hole one-to-one, oblique bolt through hole and the oblique bolt hand hole intercommunication that corresponds, the other end of shield section of jurisdiction is equipped with oblique bolt embedded nut, and oblique bolt embedded nut is used for the fixed oblique bolt of wearing out from the oblique bolt through hole of adjacent shield section of jurisdiction.
7. An implementation method of a shield segment connecting structure of an earthquake active fault zone is characterized in that: comprises that
S1, butting adjacent rings of shield segments through circular seams;
s2, penetrating a straight bolt through the straight bolt through holes of the two adjacent rings, and penetrating an inclined bolt through the inclined bolt through hole from an inclined bolt hand hole to be screwed into the inclined bolt embedded nut;
s3, fixing two ends of the straight bolt in the straight bolt hand holes of two adjacent rings respectively by adopting a straight bolt nut, and fastening the oblique bolt through the oblique bolt embedded nut to realize effective connection of the adjacent rings of the shield segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210322248.4A CN114810134A (en) | 2022-03-29 | 2022-03-29 | Connecting structure of shield segments of earthquake active fault zone and implementation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210322248.4A CN114810134A (en) | 2022-03-29 | 2022-03-29 | Connecting structure of shield segments of earthquake active fault zone and implementation method |
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| CN114810134A true CN114810134A (en) | 2022-07-29 |
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| CN202210322248.4A Pending CN114810134A (en) | 2022-03-29 | 2022-03-29 | Connecting structure of shield segments of earthquake active fault zone and implementation method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002147182A (en) * | 2000-11-14 | 2002-05-22 | Penta Ocean Constr Co Ltd | Structure for preventing dropout of assembling bolt for segment equipped with tenon |
| JP2006316590A (en) * | 2005-05-16 | 2006-11-24 | Kumagai Gumi Co Ltd | Segment and joint structure of segments |
| CN206329602U (en) * | 2016-11-26 | 2017-07-14 | 安徽铁创新材料科技有限公司 | A kind of novel segment bolt |
| CN109736837A (en) * | 2019-01-29 | 2019-05-10 | 天津大学 | A kind of deformable tube strip terminal for tunnel antidetonation |
| CN110318776A (en) * | 2019-07-05 | 2019-10-11 | 甘肃省交通规划勘察设计院股份有限公司 | Method for tunnel construction based on inverted arch and inverted arch filled layer substitution steel-concrete combined structure |
| CN113503168A (en) * | 2021-06-21 | 2021-10-15 | 上海市城市建设设计研究总院（集团）有限公司 | Longitudinal joint structure of shield tunnel in high-intensity earthquake active fault area |
| CN214887092U (en) * | 2020-12-11 | 2021-11-26 | 北京市市政工程设计研究总院有限公司 | Shield tunnel main body lining segment bolted connection's protruding terminal surface structure |
-
2022
- 2022-03-29 CN CN202210322248.4A patent/CN114810134A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002147182A (en) * | 2000-11-14 | 2002-05-22 | Penta Ocean Constr Co Ltd | Structure for preventing dropout of assembling bolt for segment equipped with tenon |
| JP2006316590A (en) * | 2005-05-16 | 2006-11-24 | Kumagai Gumi Co Ltd | Segment and joint structure of segments |
| CN206329602U (en) * | 2016-11-26 | 2017-07-14 | 安徽铁创新材料科技有限公司 | A kind of novel segment bolt |
| CN109736837A (en) * | 2019-01-29 | 2019-05-10 | 天津大学 | A kind of deformable tube strip terminal for tunnel antidetonation |
| CN110318776A (en) * | 2019-07-05 | 2019-10-11 | 甘肃省交通规划勘察设计院股份有限公司 | Method for tunnel construction based on inverted arch and inverted arch filled layer substitution steel-concrete combined structure |
| CN214887092U (en) * | 2020-12-11 | 2021-11-26 | 北京市市政工程设计研究总院有限公司 | Shield tunnel main body lining segment bolted connection's protruding terminal surface structure |
| CN113503168A (en) * | 2021-06-21 | 2021-10-15 | 上海市城市建设设计研究总院（集团）有限公司 | Longitudinal joint structure of shield tunnel in high-intensity earthquake active fault area |
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