CN205936665U - Waterproof structure of shield method tunnel segment bolt hole - Google Patents
Waterproof structure of shield method tunnel segment bolt hole Download PDFInfo
- Publication number
- CN205936665U CN205936665U CN201620925774.XU CN201620925774U CN205936665U CN 205936665 U CN205936665 U CN 205936665U CN 201620925774 U CN201620925774 U CN 201620925774U CN 205936665 U CN205936665 U CN 205936665U
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- bolt
- washer
- waterproof
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Abstract
The utility model discloses a waterproof structure of shield method tunnel segment bolt hole, including lieing in the bolt of bolt hole internal connection pipe piece, the bolt head that lies in the bolt and the bolt washer between the section of jurisdiction, lieing in a waterproof gasket between bolt washer and the section of jurisdiction, lieing in the 2nd waterproof gasket between bolt head and the bolt washer, the one side of a waterproof gasket and section of jurisdiction contact is the plane, and the one side that contacts with the bolt washer is equipped with the semi -circular arch of at least one ring, two terminal surfaces of the 2nd waterproof gasket are the plane. The utility model discloses can improve the waterproof pressure of bolt hole, can come the size of adjusting bolt pretightning force as required, through the contact stress who changes waterproof gasket and section of jurisdiction and bolt washer to realize different waterproof pressure requirements, and have better durability.
Description
Technical field
This utility model belongs to tunnel water proofing technical field, specifically a kind of shield tunnel segment bolt hole waterproof structure
Make.
Background technology
Shield tunnel is the structure being formed by polylith prefabricated pipe section on-site consolidation, is bolted between section of jurisdiction,
In order to prevent subsoil water from leaking in tunnel from segment joint, seam crossing is provided with waterproof sealing gasket outside section of jurisdiction,
Bolt arranges hydro-expansive rubber sealing ring, and carries out filleting in inner side, in the higher engineering of waterproof requirement, near connecing
It is also provided with second waterproof sealing gasket inside seam.In Practical Project, due to prefabricated pipe section quality, the assembled quality of construction, close
The impact of the factors such as packing sticking Quality, outer side seal pad seepage is very difficult to avoid completely, or even seepage is very in indivedual engineerings
Seriously.
When outer side seal pad occur seepage after, current may along bolt hole enter tunnel, therefore bolt hole be provided with anti-
Water constructs.But from《Certain crosses the percolating water analysis of causes of river Shield-bored tunnels section of jurisdiction and Treatment process》(Chinese architecture waterproof,
6th phase in 2015),《The shield tunnel percolating water analysis of causes and counter-measure》(urban architecture, the 8th phase in 2013) and《Shield
Structure treatment technology for tunnel seepage water process construction technology》Documents such as (urban architecture, o. 11ths in 2015) can be seen that segment bolt aperture and oozes
The phenomenon of leakage often occurs.
Duct pieces of shield tunnel link bolt hole waterproof is all using in bolt chamfering position setting triangular-section at present
The mode of water swelling rubber ring.Due to typically big than the diameter of bolt 6mm of diameter of bolt hole about, sealing ring water-swellable is backward
Bolt in the hole is extruded, and due to not having sidewise restraint, can not form the bulbs of pressure, therefore waterproof effect is very poor.In addition, hydro-expansive rubber
Material less stable under the conditions of long period of soaking, absorbent material easily runs off from the elastomer network of rubber, shows as growing
Before and after phase or repeatedly immersion, larger mass loss and physical property decline.That is commonly used at present water-swellable rubber
Expansive force can not be produced during the water-swellable that cushion rubber exists, not have due waterproof action, and stability and durability deficiency.
Utility model content
For problem present in background technology, the utility model proposes one kind is former from waterproof sealing gasket material and work
Reason, the aspect such as sealing gasket construction, sealing gasket installation site carry out comprehensive improvement, thus solving the not enough shield method of prior art
Tunnel duct piece bolt hole water proof structure.
For reaching above-mentioned purpose, the shield tunnel segment bolt hole water proof structure of this utility model design, including being located at
The bolt of bolt hole inner connection tube piece, the bolt washer being located between the bolt head of bolt and section of jurisdiction it is characterised in that：Also include
The first waterproof washer between bolt washer and section of jurisdiction, the second waterproof washer being located between bolt head and bolt washer；
The one side that described first waterproof washer is contacted with described section of jurisdiction is plane, and the one side contacting with bolt washer is provided with least one ring half
Circular protrusions；Two end faces of described second waterproof washer are plane.
Preferably, the internal diameter of described first waterproof washer is more than the internal diameter of bolt washer, and external diameter is not more than bolt washer
External diameter；The internal diameter with diameter greater than the first waterproof washer of described semi-cylindrical hill is less than the external diameter of bolt washer.
It is further preferred that described first waterproof washer is provided with multi-ring semi-cylindrical hill, adjacent two semi-circular projection
Diameter difference be 10～20mm.
Preferably, described first waterproof washer is made using ethylene propylene diene monomer (EPDM) material.
Preferably, described section of jurisdiction is provided with the stopper slot of accommodating described first waterproof washer.
It is further preferred that the depth of described stopper slot is 2～4mm.
Preferably, the internal diameter of described second waterproof washer is not less than the diameter of bolt, and external diameter is less than bolt head inscribed circle diameter.
Preferably, described second waterproof washer adopts neoprene or EP rubbers material.
The beneficial effects of the utility model are：1. bolt hole waterproofing pressure can be improved.Existing hydro-expansive rubber packing ring is prevented
Water mode, is met due to packing ring and can expand to bolt in the hole along the gap between bolt hole and bolt after water, expanded rubber is no
The bulbs of pressure can not be produced in the case of constraint, when there being hydraulic pressure effect, do not have waterproof effect.It is anti-that this utility model adopts
Water scheme is by the second waterproof between the first waterproof washer between section of jurisdiction and bolt washer and bolt head and bolt washer
Packing ring produces compression stress under bolt pretightening effect, thus realizing the waterproof purpose of bolt hole.2. the utility model proposes
Scheme, the size of regulating bolt pretightning force can be carried out as needed, by changing connecing of waterproof washer and section of jurisdiction and bolt washer
Tactile stress, thus realize different waterproofing pressures require.3. this utility model packing ring material and hydro-expansive rubber ratio have more
Good durability.
Brief description
Fig. 1 is assembling schematic diagram of the present utility model
Fig. 2 is the amplification explosive view at A in Fig. 1
Fig. 3 is the front view of this utility model first waterproof washer
Fig. 4 is the section B-B figure of Fig. 3
In figure：Bolt hole 1, section of jurisdiction 2, bolt 3, bolt head 4, bolt washer 5, the first waterproof washer 6 (semi-cylindrical hill
6.1), the second waterproof washer 7.
Specific embodiment
Below by Fig. 1～Fig. 4 and the mode of enumerating some alternative embodiments of the present utility model, to this utility model
Technical scheme (inclusion optimal technical scheme) be described in further detail, any technical characteristic in the present embodiment and appoint
What technical scheme does not all limit protection domain of the present utility model.
As depicted in figs. 1 and 2, the shield tunnel segment bolt hole water proof structure of utility model design, including positioned at spiral shell
The bolt 3 of keyhole 1 inner connection tube piece 2, the bolt washer 5 being located between the bolt head 4 of bolt 3 and section of jurisdiction 2, it is located at bolt washer
The first waterproof washer 6 between 5 and section of jurisdiction 2, the second waterproof washer 7 being located between bolt head 4 and bolt washer 5；Described
The one side that one waterproof washer 6 is contacted with described section of jurisdiction 2 is plane, and the one side contacting with bolt washer 5 is provided with least one ring semicircle
Shape projection 6.1；Two end faces of described second waterproof washer 7 are plane.
Again as shown in Fig. 2 the internal diameter of described first waterproof washer 6 is more than the internal diameter of bolt washer 5, external diameter is not more than bolt
The external diameter of packing ring；The internal diameter with diameter greater than the first waterproof washer 6 of described semi-cylindrical hill 6.1 is less than the external diameter of bolt washer 5.
As shown in Figure 3 and Figure 4, described first waterproof washer 6 is provided with multi-ring semi-cylindrical hill 6.1, and adjacent two and half
The difference of the diameter of circular protrusions 6.1 is 10～20mm.That is, being spaced apart 5 between adjacent two semi-cylindrical hills 6.1
～10mm.
Preferably, described first waterproof washer 6 is made using ethylene propylene diene monomer (EPDM) material.
Again as shown in Fig. 2 described section of jurisdiction 2 is provided with the stopper slot 8 of accommodating described first waterproof washer 6.Preferably, described
The depth of stopper slot 8 is 2～4mm.
Again as shown in Fig. 2 the internal diameter of described second waterproof washer 7 is not less than bolt 3 diameter, external diameter is less than in bolt head 4
Tangential circle diameter.
Preferably, described second waterproof washer 7 adopts neoprene or EP rubbers material.
Shield tunnel segment bolt hole waterproof construction side using above-mentioned shield tunnel segment bolt hole water proof structure
Method, comprises the following steps：
One) carry out stopper slot 8 during prefabricated pipe section 2 in the lump, adopt bonding agent before going into the well in section of jurisdiction 2 by the first waterproof washer
6 are pasted onto in stopper slot 8, and section of jurisdiction 2, in 12 hours that paste installing the first waterproof washer, must not send down-hole assembled, and must not
Contact with water；
Two), during segment assembly 2, successively the second waterproof washer 7 and bolt washer 5 are set on bolt 3, by bolt 3
Pretension carries out densification and then plays waterproof action to the first waterproof washer 6 and the second waterproof washer 7, and can pass through adjustment bolt 3
Pretightning force realizes the requirement of the different water pressure of opposing.
Preferably, step one) in binding agent adopt modified environment protection type polychloroprene tackifier, brushing binding agent on section of jurisdiction 2
Afterwards, cool put 10～15 minutes, when finger contact adhesion, then the first waterproof washer 6 is entirely attached to spacing on section of jurisdiction 2
In groove 8.
Claims (6)
1. a kind of shield tunnel segment bolt hole water proof structure, including the bolt positioned at bolt hole (1) inner connection tube piece (2)
(3), be located at bolt washer (5) between the bolt head (4) of bolt (3) and section of jurisdiction (2) it is characterised in that：Also include positioned at spiral shell
The first waterproof washer (6) between bolt packing ring (5) and section of jurisdiction (2), second being located between bolt head (4) and bolt washer (5)
Waterproof washer (7)；The one side that described first waterproof washer (6) is contacted with described section of jurisdiction (2) is plane, connects with bolt washer (5)
Tactile one side is provided with least one ring semi-cylindrical hill (6.1)；Two end faces of described second waterproof washer (7) are plane.
2. shield tunnel segment bolt hole water proof structure according to claim 1 it is characterised in that：Described first waterproof
The internal diameter of packing ring (6) is more than the internal diameter of bolt washer (5), and external diameter is not more than the external diameter of bolt washer (5)；Described semi-cylindrical hill
(6.1) the internal diameter with diameter greater than the first waterproof washer (6) is less than the external diameter of bolt washer (5).
3. according to the shield tunnel segment bolt hole water proof structure described in claim 2 it is characterised in that：Described first collision mat
Circle (6) is provided with multi-ring semi-cylindrical hill (6.1), and the difference of the adjacent diameter of two semi-circular projection (6.1) is 10～20mm.
4. according to the shield tunnel segment bolt hole water proof structure described in claim 1 it is characterised in that：On described section of jurisdiction (2)
It is provided with the stopper slot (8) of accommodating described first waterproof washer (6).
5. according to the shield tunnel segment bolt hole water proof structure described in claim 4 it is characterised in that：Described stopper slot (8)
Depth be 2～4mm.
6. according to the shield tunnel segment bolt hole water proof structure described in claim 1 it is characterised in that：Described second collision mat
The internal diameter of circle (7) is not less than bolt (3) diameter, and external diameter is less than bolt head (4) inscribed circle diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620925774.XU CN205936665U (en) | 2016-08-23 | 2016-08-23 | Waterproof structure of shield method tunnel segment bolt hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620925774.XU CN205936665U (en) | 2016-08-23 | 2016-08-23 | Waterproof structure of shield method tunnel segment bolt hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205936665U true CN205936665U (en) | 2017-02-08 |
Family
ID=57951144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620925774.XU Active CN205936665U (en) | 2016-08-23 | 2016-08-23 | Waterproof structure of shield method tunnel segment bolt hole |
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| CN (1) | CN205936665U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2016
- 2016-08-23 CN CN201620925774.XU patent/CN205936665U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106121688B (en) * | 2016-08-23 | 2019-02-26 | 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 |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |