CN110318778B - A waterproof sealing pad for reducing friction deformation and a waterproof structure for shield segment - Google Patents
A waterproof sealing pad for reducing friction deformation and a waterproof structure for shield segment Download PDFInfo
- Publication number
- CN110318778B CN110318778B CN201910699414.0A CN201910699414A CN110318778B CN 110318778 B CN110318778 B CN 110318778B CN 201910699414 A CN201910699414 A CN 201910699414A CN 110318778 B CN110318778 B CN 110318778B
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- CN
- China
- Prior art keywords
- sealing gasket
- waterproof
- holes
- deformation
- gasket body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 89
- 238000001125 extrusion Methods 0.000 claims abstract description 22
- 230000002787 reinforcement Effects 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 27
- 239000003831 antifriction material Substances 0.000 claims description 10
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- 210000003205 muscle Anatomy 0.000 description 4
- 230000005641 tunneling Effects 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- 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 invention belongs to the technical field of civil engineering, and particularly relates to a duct piece waterproof sealing gasket for reducing friction deformation. The invention also provides a shield segment waterproof structure, wherein waterproof grooves of two shield segments are oppositely arranged; sealing gaskets are arranged in each waterproof groove, and at least one sealing gasket is the duct piece waterproof sealing gasket for reducing friction deformation; the extrusion end of the sealing gasket body on the shield segment provided with the segment waterproof sealing gasket for reducing friction deformation is mutually extruded and sealed with the extrusion end of the sealing gasket on the other shield segment. According to the invention, the reinforcement mode is adopted in the existing sealing gasket body, so that the deformation resistance of the sealing gasket under the action of friction force is improved, the deformation of the sealing gasket under the action of friction force of a contact surface is effectively reduced, the dislocation phenomenon is effectively relieved, and the waterproof capability of the formed shield tunnel is remarkably improved.
Description
Technical Field
The invention belongs to the technical field of civil engineering, and particularly relates to a duct piece waterproof sealing gasket for reducing friction deformation and a shield duct piece waterproof structure.
Background
At present, ethylene propylene diene monomer rubber or neoprene rubber is generally used for the waterproof elastic sealing gasket of the shield segment structure. In the pipe piece assembling process, under the action of the rotating torque of the pipe piece assembling machine, the sealing gasket of the pipe piece longitudinal joint is compacted, the pipe piece structure longitudinally slides to be in place under the action of jack thrust, and then the pipe piece is locked by adopting a connecting bolt, so that the pipe piece assembling is completed. In the assembling process, great friction exists between the contact surfaces of the sealed gaskets of the extruded longitudinal seams, the gaskets of the assembled duct pieces can displace in opposite directions to the tunneling direction of the shield under the action of the friction, and the gaskets of the assembled duct pieces can displace in accordance with the tunneling direction of the shield under the action of the friction, so that the sealed gaskets of the longitudinal seams at the corners of the duct pieces are generally staggered in the assembling process, the phenomenon can not be completely eliminated even in a mode of brushing drag reducer, the waterproof capability of the duct piece structure is weakened, and even corner water leakage occurs, and the durability and the normal service performance of the shield tunnel are influenced.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the duct piece waterproof sealing gasket and the shield duct piece waterproof structure for reducing friction deformation, and the sealing gasket is improved in deformation resistance under the action of friction force in a reinforcement mode in the existing sealing gasket body, so that the deformation of the sealing gasket under the action of friction force of a contact surface is effectively reduced, the dislocation phenomenon is effectively relieved, and the waterproof capability of a formed shield tunnel is remarkably improved.
In order to achieve the above purpose, the technical scheme of the invention is that the duct piece waterproof gasket for reducing friction deformation comprises a gasket body, wherein the gasket body is provided with a mounting end which can extend into a waterproof groove of a shield duct piece and an extrusion end which can be matched and extruded with a gasket of another shield duct piece, and a reinforcement material is arranged in the gasket body.
Further, the reinforcement material is disposed inside the extrusion end of the gasket body.
Further, the reinforcement material includes longitudinal ribs provided along a length direction of the gasket body.
Further, the plurality of longitudinal ribs are arranged at intervals along the width direction of the sealing gasket body.
Still further, the reinforcement material still includes along the many horizontal muscle that the length direction interval of sealed pad body set up, and many horizontal muscle are connected with many indulge muscle and are formed network structure.
Further, the reinforced material is a high elastic modulus material.
Further, a groove with an opening facing the shield segment is formed in one side, attached to the bottom surface of the waterproof groove, of the sealing gasket body.
Still further, be equipped with a plurality of through-holes in the sealing pad body, the through-hole is followed the length direction of sealing pad body arranges, just the through-hole is located add muscle material with between the recess.
Further, the through hole comprises a plurality of first holes and a plurality of second holes, and the second holes are arranged above the adjacent two first holes.
Further, a third hole is arranged above the outer sides of the first holes on both sides.
The invention also provides a shield segment waterproof structure, which comprises two shield segments, wherein waterproof grooves of the two shield segments are oppositely arranged; sealing gaskets are arranged in each waterproof groove, and at least one sealing gasket is the duct piece waterproof sealing gasket for reducing friction deformation; and the extrusion end of the sealing gasket body on the shield segment provided with the segment waterproof sealing gasket for reducing friction deformation is mutually extruded and sealed with the extrusion end of the sealing gasket on the other shield segment.
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the invention, the reinforcement mode is adopted in the existing sealing gasket body, so that the deformation resistance of the sealing gasket under the action of friction force is improved, the deformation of the sealing gasket under the action of friction force of a contact surface is effectively reduced, the dislocation phenomenon is effectively relieved, and the waterproof capability of a formed shield tunnel is remarkably improved;
(2) According to the duct piece waterproof sealing gasket provided by the invention, the reinforced material is added in the extrusion end of the sealing gasket body for being matched and extruded with the sealing gasket of another shield duct piece, so that when the duct piece structure slides in the longitudinal direction, the deformation of the sealing gasket body is reduced, and the dislocation is relieved;
(3) The reinforced material in the sealing gasket body of the duct piece waterproof sealing gasket provided by the invention comprises longitudinal ribs arranged along the length direction of the sealing gasket body, and the longitudinal ribs are consistent with the sliding direction of the duct piece structure, so that the deformation of the sealing gasket body is reduced.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of a conventional waterproof gasket;
FIG. 2 is a cross-sectional view of a segment waterproof gasket with reduced frictional deformation according to an embodiment of the present invention;
in the figure: 1. the sealing gasket comprises a sealing gasket body 2, a reinforced material 3, a groove 4, a first hole 5, a second hole 6 and a third hole.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second" may include one or more such features, either explicitly or implicitly; in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
As shown in fig. 2, an embodiment of the present invention provides a duct piece waterproof gasket for reducing friction deformation, which includes a gasket body 1, the gasket body 1 has a mounting end capable of extending into a waterproof groove of a shield duct piece and an extrusion end capable of being extruded in cooperation with a gasket of another shield duct piece, and a reinforcement material 2 is provided in the gasket body 1. According to the embodiment, the reinforcement mode is adopted in the existing sealing gasket body, the deformation resistance of the sealing gasket under the action of friction force is improved, the deformation of the sealing gasket under the action of the friction force of the contact surface is effectively reduced, the dislocation phenomenon is effectively relieved, and the waterproof capacity of the formed shield tunnel is remarkably improved.
Further, the reinforcement material 2 is disposed inside the pressing end of the gasket body 1. The installation end of the sealing gasket body 1 of this embodiment is set up relatively with the extrusion end, through the inside increase reinforcement material at the extrusion end for when the section of jurisdiction structure slides in longitudinal direction, the deformation of sealing gasket body reduces, thereby alleviates the wrong platform.
Further, the reinforcement material 2 includes longitudinal ribs provided along the longitudinal direction of the gasket body 1. Further, the plurality of longitudinal ribs are arranged at intervals along the width direction of the sealing gasket body 1, as shown in fig. 2, and the number of specific longitudinal ribs is set according to actual needs. The longitudinal ribs arranged in the sealing gasket body along the length direction of the sealing gasket body are consistent with the sliding direction of the duct piece structure, so that the deformation of the sealing gasket body is reduced.
Still further, the reinforcement material 2 further includes a plurality of transverse ribs disposed at intervals along the length direction of the gasket body 1, and the plurality of transverse ribs and the plurality of longitudinal ribs are connected to form a mesh structure. The embodiment can also connect a plurality of longitudinal ribs into a whole through the transverse ribs by additionally arranging the transverse ribs, so that the whole deformation resistance is improved.
Further, the reinforced material 2 is a high elastic modulus material; the reinforced material 2 in this embodiment is a material with a modulus of elasticity greater than that of rubber, and may be steel bars, nylon ropes or other materials with a high modulus of elasticity.
Further, the mounting end of the gasket body 1 is provided with a groove 3 with an opening facing away from the extrusion end. The connecting line of the middle points of the upper side and the lower side of the cross section of the sealing gasket body 1 in this embodiment is the symmetry axis of the sealing gasket body 1, and a plurality of grooves 3 are symmetrically distributed on two sides of the symmetry axis, as shown in fig. 2, four U-shaped grooves 3 with openings facing the shield segment are arranged on one side of the sealing gasket body 1, which is attached to the bottom surface of the waterproof groove, and two grooves 3 are arranged on each side of the symmetry axis.
Further, a plurality of through holes are arranged in the sealing gasket body 1, the through holes are arranged at intervals along the length direction of the sealing gasket body 1, and the through holes are positioned between the antifriction material layer and the groove 3; the plurality of through holes of the present embodiment are symmetrical with respect to the symmetry axis. Further, the through hole comprises a plurality of first holes 4 and a plurality of second holes 5, and the second holes 5 are arranged above the adjacent two first holes 4; and a third hole 6 is arranged above the outer sides of the first holes 4 on two sides. As shown in fig. 2, three first holes 4, two second holes 5 and two third holes 6 are provided in the gasket body 1 of the present embodiment, the two second holes 5 are respectively located above the first holes 4 in the middle and the first holes 4 on both sides thereof, the first holes 4 in the middle are symmetrical about the symmetry axis, and the third holes 6 are located outside the first holes 4 on both sides.
Further, the cross section of the first hole 4 is triangular, and the cross section of the second hole 5 is inverted triangular. As shown in fig. 2, the first holes 4 and the second holes 5 are the same in size, the second holes 5 are located right above between two adjacent first holes 4, and the bottoms of the second holes 5 are inserted between the two first holes 4. The cross section of the third hole 6 in this embodiment is irregularly elliptical, and the size of the third hole 6 is smaller than the first hole 4 and the second hole 5, as shown in fig. 2.
The extrusion end of the sealing gasket body 1 of the duct piece waterproof sealing gasket of the embodiment is used for being matched with the extrusion end face of the sealing gasket of another shield duct piece, and an antifriction material layer can be further arranged on the extrusion end face, so that friction coefficient between contact surfaces of the duct piece waterproof sealing gasket is effectively reduced, dislocation phenomenon is further relieved, and waterproof capacity of a formed shield tunnel is remarkably improved. The thickness of the antifriction material layer is 0.1-1 mm, and the antifriction material layer can be a sheet made of polytetrafluoroethylene or a sheet made of a polymer material with the same or similar friction coefficient as the polytetrafluoroethylene sheet. In this embodiment, the antifriction material layer may be fixed on the upper surface of the sealing gasket body 1 in various manners, preferably, the antifriction material layer and the sealing gasket body 1 are vulcanized synchronously and formed at one time, or the antifriction material layer is adhered to the surface of the sealing gasket body 1, so that friction force between the duct piece waterproof sealing gasket and the duct piece waterproof sealing gasket is reduced, the duct piece structure is facilitated to slide in place along the longitudinal direction, and the sealing gasket body 1 is prevented from being dislocated in the assembling process.
The invention also provides a shield segment waterproof structure, which comprises two shield segments, wherein waterproof grooves of the two shield segments are oppositely arranged; sealing gaskets are arranged in each waterproof groove, and at least one sealing gasket is the duct piece waterproof sealing gasket for reducing friction deformation; the extrusion end of the sealing gasket body 1 on the shield segment provided with the segment waterproof sealing gasket for reducing friction deformation is mutually extrusion sealed with the extrusion end of the sealing gasket on the other shield segment. The duct piece waterproof gasket of the embodiment can be matched with a common gasket or a gasket for reducing friction deformation provided by the embodiment.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (5)
1. The utility model provides a reduce waterproof sealed pad of section of jurisdiction of friction deformation, includes sealed pad body, sealed pad body has the installation end that can stretch into the waterproof slot of shield segment and can cooperate extruded extrusion end, its characterized in that with the sealed pad of another shield segment: the sealing gasket body is internally provided with a reinforced material, and the reinforced material is a high-elastic modulus material with elastic modulus larger than that of rubber; an antifriction material layer is arranged on the end face of the extrusion end of the sealing gasket body;
the reinforced material is arranged in the extrusion end of the sealing gasket body;
The thickness of the antifriction material layer is 0.1-1mm, and the antifriction material layer is made of polytetrafluoroethylene;
a groove with an opening facing the shield segment is formed in one side, which is attached to the bottom surface of the waterproof groove, of the sealing gasket body;
The sealing gasket body is internally provided with a plurality of through holes, the through holes are arranged along the length direction of the sealing gasket body, and the through holes are positioned between the reinforcement material and the grooves;
the through hole comprises a plurality of first holes and a plurality of second holes, and the second holes are arranged above the adjacent two first holes;
The cross section of the first hole is triangular, the cross section of the second hole is inverted triangular, the sizes of the first hole and the second hole are the same, the second hole is positioned right above the space between two adjacent first holes, and the bottom of the second hole is inserted between the two first holes.
2. A segment waterproof gasket for reducing frictional deformation as set forth in claim 1, wherein: the reinforced material comprises longitudinal ribs arranged along the length direction of the sealing gasket body.
3. A segment waterproof gasket for reducing frictional deformation as set forth in claim 2, wherein: the sealing gasket comprises a sealing gasket body, wherein a plurality of longitudinal ribs are arranged along the width direction of the sealing gasket body at intervals.
4. A duct piece waterproof gasket for reducing frictional deformation as set forth in claim 3, wherein: the reinforced material further comprises a plurality of transverse ribs which are arranged at intervals along the length direction of the sealing gasket body, and the transverse ribs are connected with the longitudinal ribs to form a net structure.
5. The utility model provides a shield constructs section of jurisdiction waterproof construction which characterized in that: the waterproof grooves of the two shield segments are oppositely arranged; a sealing gasket is arranged in each waterproof groove, and at least one sealing gasket is a duct piece waterproof sealing gasket for reducing friction deformation according to any one of claims 1-4; and the extrusion end of the sealing gasket body on the shield segment provided with the segment waterproof sealing gasket for reducing friction deformation is mutually extruded and sealed with the extrusion end of the sealing gasket on the other shield segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910699414.0A CN110318778B (en) | 2019-07-31 | 2019-07-31 | A waterproof sealing pad for reducing friction deformation and a waterproof structure for shield segment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910699414.0A CN110318778B (en) | 2019-07-31 | 2019-07-31 | A waterproof sealing pad for reducing friction deformation and a waterproof structure for shield segment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110318778A CN110318778A (en) | 2019-10-11 |
| CN110318778B true CN110318778B (en) | 2024-11-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910699414.0A Active CN110318778B (en) | 2019-07-31 | 2019-07-31 | A waterproof sealing pad for reducing friction deformation and a waterproof structure for shield segment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110318778B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112127919B (en) * | 2020-07-24 | 2024-12-06 | 西南交通大学 | A waterproof structure for shield tunnel segment joints compatible with large misalignment |
| CN114526097B (en) * | 2022-03-07 | 2025-03-28 | 广西大学 | A compressible waterproof seal for tunnel lining joints |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993014297A1 (en) * | 1992-01-06 | 1993-07-22 | Dätwyler Ag Schweizerische Kabel-, Gummi- Und Kunststoffwerke | Process for preventing a profiled jointing strip from moving in relation to a tunnel structural component and profiled jointing strip produced thereby |
| CN203891898U (en) * | 2014-04-04 | 2014-10-22 | 北京城建设计发展集团股份有限公司 | Ribbed strengthened waterproof rubber gasket |
| CN211287701U (en) * | 2019-07-31 | 2020-08-18 | 中铁第四勘察设计院集团有限公司 | Segment waterproof sealing gasket and shield segment waterproof structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317448A (en) * | 2014-07-15 | 2016-02-10 | 中交第二公路勘察设计研究院有限公司 | Elastic sealing gasket for shield tunnel duct pipe seam |
| CN107701201A (en) * | 2017-10-30 | 2018-02-16 | 西南石油大学 | A kind of duct pieces of shield tunnel sealing gasket |
| CN207598255U (en) * | 2017-12-25 | 2018-07-10 | 衡水市华北塑胶有限责任公司 | A kind of duct pieces of shield tunnel seam elastic sealing gasket |
-
2019
- 2019-07-31 CN CN201910699414.0A patent/CN110318778B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993014297A1 (en) * | 1992-01-06 | 1993-07-22 | Dätwyler Ag Schweizerische Kabel-, Gummi- Und Kunststoffwerke | Process for preventing a profiled jointing strip from moving in relation to a tunnel structural component and profiled jointing strip produced thereby |
| CN203891898U (en) * | 2014-04-04 | 2014-10-22 | 北京城建设计发展集团股份有限公司 | Ribbed strengthened waterproof rubber gasket |
| CN211287701U (en) * | 2019-07-31 | 2020-08-18 | 中铁第四勘察设计院集团有限公司 | Segment waterproof sealing gasket and shield segment waterproof structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110318778A (en) | 2019-10-11 |
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