CN217518661U - Shield tunnel composite duct piece - Google Patents
Shield tunnel composite duct piece Download PDFInfo
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- CN217518661U CN217518661U CN202221469867.8U CN202221469867U CN217518661U CN 217518661 U CN217518661 U CN 217518661U CN 202221469867 U CN202221469867 U CN 202221469867U CN 217518661 U CN217518661 U CN 217518661U
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- concrete
- steel pipe
- shield tunnel
- reinforced concrete
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- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 56
- 239000010959 steel Substances 0.000 claims abstract description 56
- 239000004567 concrete Substances 0.000 claims abstract description 50
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 35
- 238000003780 insertion Methods 0.000 claims description 13
- 230000037431 insertion Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The application relates to the technical field of shield tunnel construction, in particular to a shield tunnel composite duct piece which comprises a plurality of arc-shaped reinforced concrete duct pieces, wherein a steel pipe concrete member is pre-embedded in each reinforced concrete duct piece; the steel pipe concrete member is formed by pouring concrete in an arc-shaped steel pipe, and the surface of the steel pipe concrete member is provided with corrugations; the reinforced concrete segments are sequentially connected in pairs along the arc length direction, so that the concrete-filled steel tube member forms a pressure bearing ring; the concrete-filled steel tube member is provided with a one-way plug connector and a pin at two ends along the arc length direction; every two steel pipe concrete work members are clamped and fixed with the pin through the plug connectors along the arc length direction; every two reinforced concrete segments are fixedly connected through bolts along the arc length direction, the composite segments can effectively solve the problem that the shield tunnel is easy to damage and lose efficacy under complex geological conditions, and reduce the risks of tunnel engineering in the process of construction and service.
Description
Technical Field
The application relates to the technical field of shield tunnel construction, in particular to a composite duct piece of a shield tunnel.
Background
With the continuous development of tunnel construction equipment, shield construction becomes a first-choice technology leading tunnel engineering to develop towards large burial depth, large section, long distance and the like, but many projects are under complicated geological conditions, such as weak surrounding rock and breakage, which cause low strength, poor self-bearing capacity, large rheological property and difficult control of stability; the water-bearing composite material passes through a water area or a sea area and bears higher water pressure and the like; particularly, when the lining segment is located in coastal earthquake sub-areas, earthquake activities are frequent, mountains are on the verge of the sea, and geological conditions are extremely complex, so that tunnel engineering has higher risks in the process of construction and service, but in recent years, with more and more shield tunnels being built, part of tunnels are even located in high earthquake intensity areas with the temperature of more than 7 ℃, the traditional lining segment cannot meet the requirements of safety and durability of underwater shield tunnels under the working condition of high intensity earthquakes, and anti-seismic measures must be taken.
At present, the anti-seismic method and measure of the shield tunnel at home and abroad mainly aim at soft strata, namely, the foundation reinforcement is carried out on the soft strata along the line, and the seismic response of the shield tunnel (mainly reducing the seismic displacement of the shield tunnel) is reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the application provides the composite duct piece of the shield tunnel, which can effectively solve the problem that the shield tunnel is easy to damage and lose efficacy under complex geological conditions and reduce the risks of tunnel engineering in the process of construction and service. The following technical scheme is adopted:
a shield tunnel composite segment comprises a plurality of arc reinforced concrete segments, wherein a reinforced concrete member is pre-embedded in each reinforced concrete segment;
the steel pipe concrete member is formed by pouring concrete in an arc-shaped steel pipe, and the surface of the steel pipe concrete member is provided with corrugations;
the reinforced concrete segments are sequentially connected in pairs along the arc length direction, so that the concrete-filled steel tube member forms a pressure bearing ring;
the concrete-filled steel tube member is provided with a one-way plug connector and a pin at two ends along the arc length direction;
every two steel pipe concrete work members are clamped and fixed with the pin through the plug connectors along the arc length direction;
every two reinforced concrete segments are fixedly connected along the arc length direction through bolts.
Optionally, the plug comprises an elastic wedge, a spring and a sleeve;
the sleeve is fixed at one end of the concrete filled steel tube component along the opening outwards, and the spring is arranged in the sleeve;
the sleeve pipe expands the diameter gradually inwards along the opening to form a horn-shaped sliding chamber, and the wedge block is slidably installed in the chamber.
Optionally, the pin is gradually reduced along the joint thereof towards the direction of the concrete-filled steel tube member to form a flared joint;
sliding the pin against the wedge in an insertion direction to cause the wedge to move in the insertion direction against the chamber wall and expand radially;
the spring bears against the wedge against the direction of insertion such that the wedge moves against the chamber wall against the direction of insertion and engages the pin to retain the plug.
Optionally, a water-stopping sealing gasket is arranged at the joint of every two reinforced concrete segments.
Optionally, a positioning rod is arranged at the joint of every two reinforced concrete segments.
Optionally, the longitudinal section of the reinforced concrete segment is provided with a plurality of longitudinal joints.
Optionally, the outer surface of the arc-shaped steel pipe is provided with corrugations.
Optionally, the inner and outer surfaces of the arc-shaped steel pipe are provided with corrugations.
Optionally, the arc lengths of the reinforced concrete pipe piece and the reinforced concrete pipe member are equal.
To sum up, the present application includes the following beneficial effects:
1. the utility model discloses a pre-buried arc steel pipe concrete component in reinforced concrete pipe, at the inside cast concrete of steel pipe, the steel pipe provides the restraint for inside concrete, and inside concrete provides the support for the steel pipe for convex steel pipe concrete structure has higher bearing capacity, after the concatenation, has formed the annular skeleton of steel pipe concrete of high strength in the lining cutting structure.
2. The utility model discloses an in introducing the section of jurisdiction design to the steel core concrete structure, combine to improve the rigidity and the bearing capacity of shield tunnel section of jurisdiction arc steel core concrete component and reinforced concrete section of jurisdiction to form complete steel core concrete bearing ring through the splicing of steel core concrete component, improve the whole mechanical properties of lining cutting structure, with the stability needs of the lining cutting structure under the adaptation complicated geological conditions.
3. The utility model discloses a built-in grafting structure and traditional bolt form jointly the concatenation technique together, have combined the fast advantage of grafting structure construction speed and the good characteristics of bolted connection stability, unite the rigidity in order to improve the section of jurisdiction seam through two kinds of modes, therefore improve the stability of lining cutting structure, play prevention section of jurisdiction lining cutting structure catastrophe and disease.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present embodiment;
fig. 2 is a schematic diagram of the plugging structure of the present embodiment.
Description of reference numerals: 1. a reinforced concrete segment; 2. a water-stopping sealing gasket; 3. a positioning rod; 4. a longitudinal interface; 5. a sleeve; 6. a bolt; 7. a concrete filled steel tubular member; 8. a pin; 9. a wedge block; 10. a spring.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses compound section of jurisdiction of shield tunnel, mainly splice two liang in proper order along the arc length direction by a plurality of arc reinforced concrete sections of jurisdiction 1 and form, as shown in figure 1, pre-buried concrete filled steel tube component 7 in every reinforced concrete section of jurisdiction 1, reinforced concrete section of jurisdiction 1 all adopts convex structure with concrete filled steel tube component 7, the two arc lengths equal, concrete filled steel tube component 7 comprises the interior concreting of arc steel pipe, the steel pipe provides the restraint for inside concrete, inside concrete provides the support for the steel pipe, make circular arc shaped concrete filled steel tube skeleton be about 2 times of the reinforced concrete structure bearing capacity with the cross-section, thereby improve the intensity and the deformability of concrete.
The outer surface of the arc-shaped steel pipe is provided with corrugations, or the inner surface and the outer surface of the arc-shaped steel pipe are provided with corrugations, the steel pipe with the corrugated structure is adopted, the viscosity of concrete pouring can be increased, the influence of transient earthquake response on the tunnel structure is reduced, and the safety stability and the durability of the tunnel structure are improved.
One-way bayonet joint and pin 8 are established respectively at the both ends of steel pipe concrete component 7, bayonet joint and pin 8 clearance fit joint, per two steel pipe concrete worker component passes through the bayonet joint and is fixed with pin 8 joint, and two liang of concrete component 7 of a plurality of steel pipe connect gradually along the arc length direction to form the bearing ring, per two reinforced concrete section of jurisdiction 1 is connected fixedly through bolt 6, and the seam crossing of per two reinforced concrete section of jurisdiction 1 is equipped with positioning rod 3, makes things convenient for the concatenation location, and the seam crossing of per two sections of jurisdiction adopts grafting structure and traditional bolt 6 to connect combined action, and the rigidity of seam also improves by a wide margin, therefore improves lining cutting structure's stability.
The joint of every two segments adopts a waterproof structure, a water-stopping sealing gasket 2 is arranged at the joint, and a plurality of longitudinal joints 4 are arranged on the longitudinal sections of the reinforced concrete segments 1 and can be used for longitudinal splicing to form a complete tunnel lining structure.
As shown in FIG. 2, the detailed structure of the one-way connector of the present invention mainly includes an elastic wedge 9, a spring 10 and a sleeve 5, the sleeve 5 is fixed at one end of the concrete filled steel tube member 7 along the opening, the sleeve 5 is gradually expanded along the opening inwards to form a horn-shaped sliding chamber, the elastic wedge 9 is slidably mounted in the sliding chamber, the spring 10 is built in the sleeve 5, both ends of the spring are respectively abutted against the bottom of the sleeve 5 and the elastic wedge 9, the elastic wedge 9 can press the spring 10 to slide along the wall of the sliding chamber, the shape of the elastic wedge 9 is limited by the horn-shaped sliding chamber, and the elastic wedge 9 can be expanded along the expanding direction of the chamber.
The pin 8 is gradually reduced along the joint thereof towards the steel pipe concrete member 7 to form a horn-shaped joint, form clearance fit with the trumpet-shaped sliding chamber, the pin 8 resists against the elastic wedge block 9 to slide along the insertion direction, so that the elastic wedges 9 move in the direction of insertion against the wall of the chamber and expand radially, giving way to the pins 8, when the opening formed by the expansion of the side of the elastic wedge 9 abutted against the pin 8 is the same as the joint of the pin 8, the pin 8 can be inserted into the elastic wedge 9, the elastic wedge 9 loses the abutting force, under the action of the spring 10, moving against the direction of insertion, so that the elastic wedges 9 move against the wall of the sliding chamber against the direction of insertion in the gap formed by the pin 8 and the sliding chamber, and the pin 8 is in interference fit with the pin to clamp the plug, and the pin 8 cannot be pulled out against the insertion direction at the moment, so that the splicing and fixing effects are achieved.
The utility model discloses an operating mechanism is that, reinforced concrete segment 1 has higher intensity and rigidity, and the arc corrugated steel pipe concrete component 7 of its built-in pegs graft through sleeve and pin 8 and forms complete steel pipe concrete bearing ring structure for the whole mechanical properties of lining cutting structure is strengthened, ensures tunnel lining cutting structure's overall stability.
And the splicing structure shown in figure 2 is adopted to improve the splicing efficiency of the lining segment in the construction process of the lining segment, so that the advantages of high construction speed, high precision, high industrialization and standardization degree and the like of the shield tunnel are fully exerted, and meanwhile, the joint splicing is formed to ensure the rigidity and the strength of the joint by adopting the joint action of the bolt 6.
The utility model provides a technique is reinforceed to compound section of jurisdiction and bearing ring can improve intensity, rigidity and the overall stability of section of jurisdiction lining structure of shield tunnel lining section of jurisdiction by a wide margin, especially under the individual layer lining condition, can effectively reduce section of jurisdiction seam and open volume and structural deformation to reduce the emergence of shield tunnel disease and calamity.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a shield tunnel composite segment which characterized in that: the reinforced concrete pipe comprises a plurality of arc-shaped reinforced concrete pipe segments, wherein steel pipe concrete members are embedded in the reinforced concrete pipe segments;
the steel pipe concrete member is formed by pouring concrete in an arc-shaped steel pipe, and the surface of the steel pipe concrete member is provided with corrugations;
the reinforced concrete segments are sequentially connected in pairs along the arc length direction, so that the concrete-filled steel tube member forms a pressure bearing ring;
the concrete-filled steel tube member is provided with a one-way plug connector and a pin at two ends along the arc length direction;
every two steel pipe concrete working members are clamped and fixed with the pin through the plug connectors along the arc length direction;
every two reinforced concrete segments are fixedly connected along the arc length direction through bolts.
2. The shield tunnel composite segment of claim 1, which is characterized in that: the plug comprises an elastic wedge block, a spring and a sleeve;
the sleeve is fixed at one end of the concrete filled steel tube component along the opening outwards, and the spring is arranged in the sleeve;
the sleeve pipe expands the diameter gradually inwards along the opening to form a horn-shaped sliding chamber, and the wedge block is slidably installed in the chamber.
3. The shield tunnel composite segment of claim 2, wherein: the pin is gradually reduced along the direction of the joint of the pin towards the concrete filled steel tube member to form a horn-shaped joint;
sliding the pin against the wedge in an insertion direction to cause the wedge to move in the insertion direction against the chamber wall and expand radially;
the spring bears against the wedge against the direction of insertion such that the wedge moves against the chamber wall against the direction of insertion and engages the pin to retain the plug.
4. The shield tunnel composite segment of claim 1, which is characterized in that: and a water-stopping sealing gasket is arranged at the joint of every two reinforced concrete segments.
5. The shield tunnel composite segment of claim 1, which is characterized in that: and a positioning rod is arranged at the joint of every two reinforced concrete segments.
6. The shield tunnel composite segment of claim 1, which is characterized in that: the longitudinal section of the reinforced concrete segment is provided with a plurality of longitudinal connectors.
7. The shield tunnel composite segment of claim 1, which is characterized in that: the outer surface of the arc-shaped steel pipe is provided with corrugations.
8. The shield tunnel composite segment of claim 1, which is characterized in that: the inner surface and the outer surface of the arc-shaped steel pipe are both provided with ripples.
9. The shield tunnel composite segment of claim 1, which is characterized in that: the arc lengths of the reinforced concrete segment and the reinforced concrete member are equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221469867.8U CN217518661U (en) | 2022-06-13 | 2022-06-13 | Shield tunnel composite duct piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221469867.8U CN217518661U (en) | 2022-06-13 | 2022-06-13 | Shield tunnel composite duct piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217518661U true CN217518661U (en) | 2022-09-30 |
Family
ID=83391905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221469867.8U Expired - Fee Related CN217518661U (en) | 2022-06-13 | 2022-06-13 | Shield tunnel composite duct piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217518661U (en) |
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2022
- 2022-06-13 CN CN202221469867.8U patent/CN217518661U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220930 |