CN112814030A - End sealing door structure for immersed tunnel - Google Patents
End sealing door structure for immersed tunnel Download PDFInfo
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- CN112814030A CN112814030A CN202110012119.0A CN202110012119A CN112814030A CN 112814030 A CN112814030 A CN 112814030A CN 202110012119 A CN202110012119 A CN 202110012119A CN 112814030 A CN112814030 A CN 112814030A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/063—Tunnels submerged into, or built in, open water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Abstract
The invention provides an end sealing door structure for a immersed tunnel, which is formed by splicing a plurality of small-size end sealing small doors, wherein each small end sealing door is of a Z-shaped structure; two ends of the Z-shaped structure are called straight line parts, two adjacent straight line parts of the end seal wicket are positioned in the immersed tube, and one straight line part is positioned outside the immersed tube; preferably, the two straight line parts are sealed by a pressure-bearing rubber water stop belt. The end sealing door structure for the immersed tube tunnel adopts a mode that adjacent end sealing small doors of a Z-shaped structure are buckled in an internal and external crossing mode, so that the stability and integrity of the whole structure are ensured. This immersed tube tunnel end seals a door structure adopts the polylith mode of assembling, has reduced the steel construction processing degree of difficulty, and does not need high load hoisting equipment to install, has practiced thrift manpower and materials cost, reduces engineering cost, practices thrift engineering cycle, can realize the reutilization, practices thrift the cost.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to an end sealing door structure for a immersed tube tunnel.
Background
The immersed tube tunnel end sealing doors are arranged at two ends of each immersed tube, are temporary facilities in the process of floating transportation and sinking of the tube sections, and are used for taking the immersed tubes as a sealed box body so as to meet the requirements of floating transportation and sinking of the immersed tubes.
The existing immersed tube tunnel manufacturing scheme based on end sealing doors mainly comprises a concrete mode and a steel structure mode; in the concrete mode, because the end sealing door belongs to a post-cast disposal thin-wall body, the pouring of concrete is difficult, and particularly, the quality of a seam part of a wall top is difficult to ensure, so that special measures are required to be taken in construction engineering to protect the pouring quality of the concrete of the end sealing door, and the end sealing door has many defects, such as poor sealing effect, easy water seepage phenomenon, uneven surface of the reinforced concrete sealing door and the like; meanwhile, the concrete structure is troublesome in the dismantling process, the end sealing door is broken, and the concrete blocks are transported, which requires great manpower and material resources, and cannot be recycled for the second time.
With the continuous development of large immersed tube tunnel construction technologies such as a Hongzhao bridge and a deep-medium channel, the structural style of the steel structure end sealing door is more and more popular among domestic manufacturers. The steel structure end sealing door mode is adopted, the end sealing door can be processed and formed in a special steel structure factory, and the dimensional accuracy and the processing quality of the end sealing door can be guaranteed to the greatest extent; adopt steel construction end to seal a door type, decompose whole end seal door into a plurality of end seal wicket, then adopt high-quality welding to let each end seal wicket merge into a whole. Although the mode is safe and reliable, the quality requirement of the welding seam between the end sealing doors is very high, and the defect of the welding seam at a little point can not occur, so that the sealing performance of the whole structure is influenced. Therefore, after welding is finished, 100% detection needs to be carried out on the welding seam quality to ensure no error. The steel construction welding end that adopts at present seals a door structure and demolishs the in-process at the later stage and has certain hidden danger for adopt the electric welding cutting steel construction to seal a door, produce certain danger to near GINA waterstop easily, the performance and the safe state of GINA waterstop can all be influenced to burning things which may cause a fire disaster and welding slag and welded high temperature. Because the end-sealed door structure needs to be dismantled by adopting a flame cutting mode, although certain secondary recycling can be realized, a lot of manpower and material resources need to be spent in the recycling process.
In consideration of economy and safety, an end sealing door sealing technology capable of being reused is very important, at present, some projects are tried, and the large sealing and water stopping effect temporarily does not meet the expected requirement, mainly because the end sealing door structure is unreasonable and the sealing effect of a matched sealing water stopping belt cannot meet the actual requirement.
Under the condition, the rubber waterstop can realize secondary recycling, improve the safety of sealing and water stopping of the end sealing door and meet the requirement of sealing and water stopping of the end sealing door of the immersed tunnel, and is very urgent and important.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the end sealing door structure for the immersed tube tunnel, which replaces the structural mode that the conventional end sealing door cannot be reused and has poor sealing and water stopping effects, improves the sealing safety performance of the end sealing door of the immersed tube tunnel, and further promotes the development of project construction of the immersed tube tunnel.
Providing an end sealing door structure for a immersed tunnel, wherein the end sealing door is formed by splicing a plurality of small-size end sealing small doors, and the end sealing small doors are of a Z-shaped structure; two ends of the Z-shaped structure are called straight line parts, and two adjacent straight line parts of the end sealing small door are arranged in the immersed tube and outside the immersed tube.
Preferably, the end-sealing door is longitudinally divided into a plurality of small-sized end-sealing small doors, namely, the height of each end-sealing small door is higher than that of each end-sealing small door, and the sum of the widths of the end-sealing small doors is equal to that of the end-sealing doors.
Preferably, the two straight parts are sealed by a pressure-bearing rubber water stop belt; the pressure-bearing rubber waterstop comprises a waterstop body, and the body is provided with a corner protrusion and an arc protrusion.
Preferably, the number of the corner protrusions and the number of the arc protrusions are respectively at least 2.
Preferably, a through hole is opened in the arc-shaped protrusion.
Preferably, a strong magnet is installed in the water stop body.
Preferably, a hydrophilic sponge rubber strip is arranged between the corner protrusions and the arc protrusions.
Further preferably, the hydrophilic sponge rubber strip is fixed on the water stop belt body in a double-faced adhesive tape bonding mode.
Preferably, the corner protrusion comprises a square portion and a T-shaped portion, and the square portion is connected with the waterstop body. When the waterstop is installed, the waterstop is extruded into the gap between the two end sealing small doors, and the edge and corner protrusions are arranged in the shape with the chamfer angle, so that the installation is convenient.
Preferably, the joint of the end sealing small door and the end face of the immersed tube tunnel is also sealed by the pressure-bearing rubber water stop belt.
Preferably, vertical parts are arranged between two linear parts of the Z-shaped structure, and adjacent vertical parts are also sealed by the pressure-bearing rubber water stop belts.
Further preferably, the water stop belt of the vertical part is intersected with the water stop belt at the end face of the immersed tube tunnel to form an I shape; for the convenience of installation, the I-shaped vertical part is divided into two T-shaped parts. The T-shaped pressure-bearing rubber waterstop is formed by integrated vulcanization pouring.
The invention has the following beneficial effects:
the end sealing door structure for the immersed tunnel is formed by splicing a plurality of small-size end sealing small doors, is simple in structure and easy to process, adopts a Z-shaped structure, the straight line parts at two ends of the Z shape are working areas for installing and sealing pressure-bearing rubber water stops, and the adjacent end sealing small doors are buckled in an internal-external cross mode, so that the stability and the integrity of the whole structure are ensured; the multi-block assembly mode is adopted, the processing difficulty of a steel structure is reduced, high-load hoisting equipment is not needed for installation, the manpower and material resource cost is saved, the construction cost is reduced, and the construction period is saved. The number of the supporting main beams can be reduced and the process of the supporting main beams can be simplified by using the Z-shaped structure, and the supporting main beams are flexibly designed according to water pressure.
The pressure-bearing rubber water stop is further arranged, the pressure difference between the inside and the outside of the end seal door is gradually increased along with the slow sinking of the immersed tube tunnel, and the pressure difference between the outside water pressure and the inside water pressure further compresses the pressure-bearing rubber water stop, so that the sealing and the water stopping are realized.
Can realize secondary utilization and save cost. This immersed tube tunnel end sealing door warp and then form a big end sealing door wholly through compressing the waterstop under the water pressure effect, and after unloading the water pressure, this end sealing door is in the free contact state almost, disassembles easily, and can realize the secondary utilization in the true sense, has shortened construction cycle and has effectively practiced thrift construction cost for the construction of immersed tube tunnel.
The pressure-bearing rubber water stop belt is of an all-rubber product structure, the whole product is vulcanized and spliced in a factory, parameterization customization is carried out according to the actual size, and free length adjustment can be realized. The T-shaped special die is arranged at the joint of each end sealing small door and the end face of the immersed tube tunnel, so that the integrated vulcanization manufacturing of the pressure-bearing rubber waterstop is completed, the vulcanization quality of the waterstop is improved, and the actual installation of a product on site and the guarantee of a large sealing waterstop effect are facilitated.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic installation diagram (top view) of an end sealing door structure pressure-bearing rubber water stop for immersed tunnel;
FIG. 2 is a schematic view (top view) of a Z-shaped end-capped wicket;
FIG. 3 is a schematic sectional structure view (front view) of the end face and the end sealing door of the immersed tunnel;
FIG. 4 is a schematic structural diagram of a pressure-bearing rubber water stop;
FIG. 5 is a schematic diagram (top view) of a pressure-bearing rubber waterstop before use;
FIG. 6 is a schematic view (top view) of a pressure-bearing rubber waterstop during use;
1 is pressure-bearing formula rubber waterstop, 2 is the door clearance of sealing, 3 is left side end seal wicket, 4 is right side end seal wicket, 5 is immersed tube tunnel terminal surface, 6 is end seal door, 7 is T font pressure-bearing formula rubber waterstop, 8 is the straight line portion, 9 is vertical part, 1.1 is the arc arch, 1.2 is hydrophilic base sponge rubber strip, 1.3 is the edges and corners arch, 1.4 is the through-hole, 1.5 is strong magnet.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
Example 1
The pressure-bearing rubber water stop comprises a water stop body, wherein a corner protrusion 1.3 and an arc protrusion 1.1 are arranged on the body.
The number of the corner protrusions 1.3 and the number of the arc protrusions 1.1 are at least 2 respectively.
The arc-shaped bulge 1.1 is provided with a through hole 1.4.
And a strong magnet 1.5 is arranged in the water stop body.
Hydrophilic group sponge rubber strip 1.2 is installed between protruding 1.3 of edges and corners and the protruding 1.1 of arc.
The hydrophilic sponge rubber strip 1.2 is fixed on the water stop body in a double-faced adhesive tape bonding mode.
As shown in fig. 3, the angular protrusion 1.3 includes a square portion and a T-shaped portion, and the square portion is connected to the water stop body.
Example 2
Providing an end sealing door structure for a immersed tunnel, wherein the end sealing door is formed by splicing a plurality of small-size end sealing small doors, and the end sealing small doors are of a Z-shaped structure; two ends of the Z-shaped structure are called as linear parts 8, two adjacent linear parts 8 of the end sealing small doors (such as the left side end sealing small door 3 and the right side end sealing small door 4 in the figure 1) are positioned in the sunken tube, one is positioned outside the sunken tube, and the two linear parts 8 are sealed through the pressure-bearing rubber water stop belt 1.
The end sealing door is longitudinally divided into a plurality of small-size end sealing small doors, namely the height of each end sealing small door is higher than that of each end sealing door, and the sum of the widths of the end sealing small doors is equal to that of the end sealing doors.
As shown in figure 3, the pressure-bearing rubber water stop comprises a water stop body, wherein a corner protrusion 1.3 and an arc protrusion 1.1 are arranged on the body.
The number of the corner protrusions 1.3 and the number of the arc protrusions 1.1 are at least 2 respectively.
The arc-shaped bulge 1.1 is provided with a through hole 1.4.
And a strong magnet 1.5 is arranged in the water stop body.
Hydrophilic group sponge rubber strip 1.2 is installed between protruding 1.3 of edges and corners and the protruding 1.1 of arc.
The hydrophilic sponge rubber strip 1.2 is fixed on the water stop body in a double-faced adhesive tape bonding mode.
As shown in fig. 4, the angular protrusion 1.3 includes a square portion and a T-shaped portion, and the square portion is connected to the water stop body.
The joint of the end sealing small door and the end face 5 of the immersed tube tunnel is also sealed by the pressure-bearing rubber water stop belt 1.
Vertical parts 9 are arranged between two straight line parts 8 of the Z-shaped structure, and the adjacent vertical parts 9 are also sealed by the pressure-bearing rubber water stop belt 1.
As shown in fig. 3, the water stop of the vertical portion 9 intersects with the water stop at the end face 5 of the immersed tunnel to form an i shape; wherein the h-shaped vertical parts 9 are broken to form two T-shapes 7. A plurality of corner protrusions 1.3, arc protrusions 1.1, hydrophilic sponge rubber strips 1.2 and strong magnets 1.5 are arranged on the T-shaped pressure-bearing rubber water stop 7.
The T-shaped pressure-bearing rubber waterstop 7 is formed by integral vulcanization pouring.
As shown in fig. 1, the water stop strip according to the embodiment is applied to the door sealing gap 2 between the straight line part 3 and the straight line part 4, and achieves the function of sealing and stopping water of a construction joint.
As shown in fig. 5 and 6, the immersed tunnel end sealing door structure described in this embodiment adopts a Z-shaped structure, the straight line portions at the two ends of the Z-shaped structure are working areas for installing and sealing a pressure-bearing rubber water stop, and the adjacent end sealing small doors are fastened by means of inner and outer intersection, so that the stability and integrity of the whole structure are ensured. In the prior art, when the end-sealed door is installed, a support main beam needs to be installed to serve as a frame structure for installing the end-sealed door. The number of the supporting main beams can be reduced and the process of the supporting main beams can be simplified by adopting a Z-shaped structure, the supporting main beams are flexibly designed according to water pressure, and in the embodiment, the supporting main beams are arranged on one side, close to the inside of the tunnel, of the Z-shaped end sealing small door and are positioned in a non-contact water area, so that a sealing system does not need to be additionally arranged. The reduction and the simplification of supporting the girder are favorable to later stage to demolish and the reutilization.
As shown in fig. 4, 5 and 6, the pressure-bearing rubber waterstop of the present embodiment has five large sealing and waterstop systems, the 1 st and 2 nd seals are both corner protrusions 1.3, the corner protrusions 1.3 are beneficial to extruding the corner protrusions 1.3 under a small water pressure in the slow sinking process of the immersed tube tunnel, so as to meet the requirement of fast sealing of the end sealing door, and the corner protrusions 1.3 continue to be compressed slowly under the condition that the water pressure increases as the immersed tube sinks; the 4 th seal and the 5 th seal of the pressure-bearing rubber waterstop are arc-shaped bulges 1.1, and the contact area of the structures of the arc-shaped bulges 1.1 can be quickly increased under a compressed state, so that the initial linear contact is converted into large plane contact, and the sealing effect of the waterstop 1 is more reliable; meanwhile, the through hole 1.4 is additionally arranged at the lower part of the arc-shaped bulge 1.1, so that the vertical compression amount of the arc-shaped bulge 1.1 is increased, and the sealing and water stopping effect of the structure is better ensured; a hydrophilic group sponge rubber strip 1.2 is arranged between the 2 nd and 4 th sealing water stop systems of the pressure-bearing rubber water stop 1, the hydrophilic group sponge rubber strip 1.2 is fixed on the water stop body in a double faced adhesive tape bonding mode, and the hydrophilic group sponge rubber strip 1.2 can realize volume expansion under the condition of water contact, so that the stress area of the whole structure is increased, and the route of the sealing water stop is effectively prolonged; this hydrophilic base sponge rubber strip 1.2 is accomplishing the first time and is met water inflation back, and the usable equal sealing rod of later stage replaces, and then realizes the reutilization of waterstop.
The 1 st, 2 nd, 4 th and 5 th waterproof systems of the pressure-bearing rubber waterstop carry out corresponding water-stopping sealing efficacy according to the slow sinking of the immersed tube tunnel in succession, and the 3 rd waterproof system as follow-up guaranteed waterproof system not only has certain waterproof performance, can absorb the water source of infiltration in earlier stage simultaneously and handle, guarantees that the end seals the water-dripping of door and does not leak.
The bottom of the pressure-bearing rubber water stop 1 is provided with a strong magnet 1.5, the water stop is effectively fixed by the adsorption of the magnet to the steel plate, a special mounting plate is not required to be arranged for fixing, the water stop can be effectively pulled and moved between sections, the mounting quality of each section of the water stop is further ensured, and the key effect on the sealing performance is further realized. The arrangement of the powerful magnets 1.5 can be optimized according to the installation condition, particularly, the powerful magnets are arranged more densely at the corner positions, and the powerful magnets are arranged loosely at the straight line section positions at the bottom. And the laminating layer degree of each mounting position is ensured to meet the sealing requirement.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. An end sealing door structure for a immersed tunnel is formed by splicing a plurality of small-size end sealing small doors and is characterized in that the end sealing small doors are of a Z-shaped structure; two ends of the Z-shaped structure are called straight line parts, and two adjacent straight line parts of the end sealing small door are arranged in the immersed tube and outside the immersed tube.
2. The end-sealing door structure for immersed tube tunnel according to claim 1, wherein the end-sealing door is divided longitudinally into a plurality of small-sized end-sealing small doors, that is, the height of the end-sealing small door is higher than that of the end-sealing door, and the sum of the widths of the end-sealing small doors is equal to that of the end-sealing door.
3. The end sealing door structure for the immersed tunnel according to claim 1, wherein the two straight line parts are sealed by a pressure-bearing rubber water stop belt; the pressure-bearing rubber waterstop comprises a waterstop body, and the body is provided with a corner protrusion and an arc protrusion.
4. The end-sealing door structure for immersed tube tunnel according to claim 3, wherein the number of said corner projections and said arc projections is at least 2.
5. The end-sealing door structure for immersed tube tunnel according to claim 3, wherein said arc-shaped protrusion has a through hole formed therein.
6. The end-sealing door structure for immersed tube tunnel according to claim 3, wherein said water-stop body has a strong magnet installed therein.
7. The end-sealing door structure for immersed tube tunnel according to claim 3, wherein a hydrophilic group sponge rubber strip is installed between the corner protrusion and the arc protrusion.
8. The end-sealing door structure for immersed tube tunnels according to claim 7, wherein the hydrophilic sponge rubber strip is fixed on the water stop body by double-faced adhesive tape.
9. The end-sealing structure for immersed tube tunnel according to claim 3, wherein said angular protrusion comprises a square portion and a T-shaped portion, the square portion being connected with said water stop body.
10. The end-sealing door structure for the immersed tunnel according to claim 3, wherein the joint of the end-sealing small door and the end face of the immersed tunnel is also sealed by the pressure-bearing rubber water-stop belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110012119.0A CN112814030A (en) | 2021-01-06 | 2021-01-06 | End sealing door structure for immersed tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110012119.0A CN112814030A (en) | 2021-01-06 | 2021-01-06 | End sealing door structure for immersed tunnel |
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| Publication Number | Publication Date |
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| CN112814030A true CN112814030A (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110012119.0A Pending CN112814030A (en) | 2021-01-06 | 2021-01-06 | End sealing door structure for immersed tunnel |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345298A (en) * | 2011-11-11 | 2012-02-08 | 上海市隧道工程轨道交通设计研究院 | Reusable fabricated end seal structure for immersed tube tunnel |
| CN203066121U (en) * | 2013-02-27 | 2013-07-17 | 株洲时代新材料科技股份有限公司 | Camelback rubber waterstop for immersed tube tunnel |
| CN104947714A (en) * | 2015-04-24 | 2015-09-30 | 中国交通建设股份有限公司 | End sealing door structure for immersed tube tunnel |
| KR20160017266A (en) * | 2014-08-01 | 2016-02-16 | 한국철도기술연구원 | Connecting Structure of Submerged Floating Tunnel Unit |
| CN210660116U (en) * | 2019-06-04 | 2020-06-02 | 中南大学 | Shield segment structure |
| CN111894037A (en) * | 2020-06-18 | 2020-11-06 | 中交第二航务工程局有限公司 | Immersed tube prefabricated end seal door installation construction method |
-
2021
- 2021-01-06 CN CN202110012119.0A patent/CN112814030A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345298A (en) * | 2011-11-11 | 2012-02-08 | 上海市隧道工程轨道交通设计研究院 | Reusable fabricated end seal structure for immersed tube tunnel |
| CN203066121U (en) * | 2013-02-27 | 2013-07-17 | 株洲时代新材料科技股份有限公司 | Camelback rubber waterstop for immersed tube tunnel |
| KR20160017266A (en) * | 2014-08-01 | 2016-02-16 | 한국철도기술연구원 | Connecting Structure of Submerged Floating Tunnel Unit |
| CN104947714A (en) * | 2015-04-24 | 2015-09-30 | 中国交通建设股份有限公司 | End sealing door structure for immersed tube tunnel |
| CN210660116U (en) * | 2019-06-04 | 2020-06-02 | 中南大学 | Shield segment structure |
| CN111894037A (en) * | 2020-06-18 | 2020-11-06 | 中交第二航务工程局有限公司 | Immersed tube prefabricated end seal door installation construction method |
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Application publication date: 20210518 |