CN2213846Y - Underwater tunnel bridge member - Google Patents
Underwater tunnel bridge member Download PDFInfo
- Publication number
- CN2213846Y CN2213846Y CN 94220932 CN94220932U CN2213846Y CN 2213846 Y CN2213846 Y CN 2213846Y CN 94220932 CN94220932 CN 94220932 CN 94220932 U CN94220932 U CN 94220932U CN 2213846 Y CN2213846 Y CN 2213846Y
- Authority
- CN
- China
- Prior art keywords
- bridge member
- tunnel bridge
- underwater tunnel
- thickness
- underwater
- 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.)
- Expired - Fee Related
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model relates to an underwater tunnel bridge member which is characterized in that the cross section of the underwater tunnel bridge member presents a shuttle shape; the slope angle of an oblique side wall is 45 to 60 DEG; the inner circumference of the underwater tunnel bridge member is elliptical, and the ratio of a long axis and a short axis is 2: 1; the thickness of an arch crown is one twelfth of the maximum clear span; the thickness of a bottom plate is larger than the thickness of the arch crown; a composite structure layer is an externally covered steel plate; the main body of the underwater tunnel bridge member is dense concrete; a fiber concrete layer and a flexible waterproof layer are arranged between the externally covered steel plate and the dense concrete. The utility model has the advantages that the section of the underwater tunnel bridge member simulates the shape of a deepwater portunid and has high stability and strong shock resistance capability; the engineering work load of underwater construction is less, and the underwater tunnel bridge member is suitable for passing through the crushed zone of submarine dislocation. The utility model is suitable for the construction of an underwater tunnel which crosses a river or a sea.
Description
The utility model belongs to tunnel and lining cutting thereof, particularly a kind of structural element that is used for submerged tunnel.
The submerged tunnel structure needs the receiving waters static pressure and impacts dynamic pressure, and disaster influence such as seismic sea wave, requires the sink amount must not hinder the navigation channel, to the excavation and the cleaning of foundation ditch, and the structural concrete irrigation amount, should reducing as far as possible, the construction period should shorten as far as possible.
At present, general submerged tunnel job practices has mine blasting hidden construction process, shield construction, sink construction method both at home and abroad.The mine blasting hidden construction process is applicable to that formation matrix is stable, the situation that edpth of tunnel is bigger, and the suitable stratum of shield construction ground is softer, and shallow tunnel, sink construction method are suitable for stratum weakness, situation that water body is more shallow.At different job practicess, different structures is arranged, immersed tube method can be adopted prefabricated structural element, and the member transportation by driving is in place to on-the-spot sedimentation, connects into integral body.Existing submerged tunnel structural element pattern is a rectangular cross section, the middle part is provided with the single hole two-way traffic, or the diplopore two-way traffic, and pass is circle or three-centred arch shape, relatively poor for side knock under water and the defensive ability/resistance ability that washes away, the expense of deep-cutting construction operation in the torrent of profundal zone is higher simultaneously.
The purpose of this utility model is, designs a kind of submerged tunnel bridge construction member of fusiformis section, to improve its underwater impact resistance, reduces the construction operation expense, improves the stability of structural element, satisfies the needs that submerged tunnel is built in the deepwater field.
Submerged tunnel bridge member of the present utility model is made up of vault, base plate and abutment wall, it is characterized in that, the cross section is fusiformis, and the slope angle of oblique abutment wall should not be greater than 60 degree, and preferably 45 spend, interior territory is an ellipse, major axis is 2:1 with the minor axis ratio, and vault thickness is got 1/12 of maximum clear span, and base plate thickness is greater than vault thickness, composite construction layer is an encased steel plate, main body is a dense concrete, between encased steel plate and dense concrete, is provided with fibrous concrete layer and flexible waterproof layer.
Above-mentioned fibrous concrete is steel fibrous concrete or glass concrete, and thickness is 120～150 millimeters, plays the topping effect.
Above-mentioned flexible waterproof layer is the tension tar felt or the neoprene sheet of 5～10 millimeters thick.
Using method of the present utility model is, utilize the straightway road foundation of the outer certain distance of tunnel portal, build the aspect waters, road surface of the gradient 3.5%, prefabricated submerged tunnel bridge member on this highway section, but continuous placing submerged tunnel bridge number of components joint is done hard and soft movable joint, composite construction layer, apply prestressing force, maintenance and quality inspection, the termination of shutoff first segment member.Base plate soft backfill layer following or side wall is to mix 30～40% foam grain in the mortar.Start water pump, it is in place to adopt " water cushion method " to guide push-and-pull with member, enters the changeover portion waters through ramp, is located in the waters.Narrower as the waters, can a push-and-pull in place to the opposite bank, remove underwater work joint operation from." water cushion method " be utilize the suspending power of water jets under high pressure, on the ramp sliding push-pull member method in place, " immersed tunnelling method " has more advantages.
The utility model has the advantages that submerged tunnel bridge member section adopts the swimming crab shape in the residence of a specified duration of survive in the turbulent flow of deep-sea, have the ability that torrent in the anti-water is surged and impacted superpressure; The fusiformis structure has bigger longitudinal stability and lateral stability coefficient, the phenomenon of can not toppling in any case; The member depth of burying is more flexible, can reduce riverbed excavating foundation trench amount according to hydrogeological conditions as far as possible, hides at riverbed surface; Suitable fault belt region by the river bed; Its " bridge-type section " is when can be used for crossing over narrow river valley, trench, with its elliptical aperture steam supply car, the current usefulness of electric locomotive.The utility model is applicable to the submerged tunnel construction when crossing over river, river, lake, sea.
Below in conjunction with drawings and Examples, the utility model is further described.
Fig. 1 is a submerged tunnel bridge member organigram
Fig. 2 is A-A section, the composite construction cross-section structure schematic diagram of Fig. 1
Fig. 3 is that submerged tunnel bridge member is as tunnel bridge, leap zone of fracture schematic diagram
As seen from the figure, submerged tunnel bridge member of the present utility model, form by vault 1, base plate 2 and abutment wall 3, it is characterized in that, the cross section is fusiformis, the slope angle 4 of oblique abutment wall should not be greater than 60 degree, preferably 45 spend, and interior territory is an ellipse, and major axis is 2:1 with the minor axis ratio, vault thickness is got 1/12 of maximum clear span, base plate thickness is greater than vault thickness, and composite construction layer is an encased steel plate 5, and main body is a dense concrete, between encased steel plate and dense concrete 8, be provided with fibrous concrete layer 6 and flexible waterproof layer 7.
Claims (3)
1, a kind of submerged tunnel bridge member is made up of vault, base plate and abutment wall, it is characterized in that, the cross section is fusiformis, the slope angle of oblique abutment wall is 45～60 degree, and interior territory is an ellipse, and major axis is 2: 1 with the minor axis ratio, vault thickness is got 1/12 of maximum clear span, base plate thickness is greater than vault thickness, and composite construction layer is an encased steel plate, and main body is a dense concrete, between encased steel plate and dense concrete, be provided with fibrous concrete layer and flexible waterproof layer.
2, submerged tunnel bridge member as claimed in claim 1 is characterized in that, fibrous concrete is a steel fibrous concrete, and thickness is 120～150 millimeters.
3, submerged tunnel bridge member as claimed in claim 1 is characterized in that, flexible waterproof layer is the tension tar felt of 5～10 millimeters thick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94220932 CN2213846Y (en) | 1994-09-15 | 1994-09-15 | Underwater tunnel bridge member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94220932 CN2213846Y (en) | 1994-09-15 | 1994-09-15 | Underwater tunnel bridge member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2213846Y true CN2213846Y (en) | 1995-11-29 |
Family
ID=33835382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94220932 Expired - Fee Related CN2213846Y (en) | 1994-09-15 | 1994-09-15 | Underwater tunnel bridge member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2213846Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060774A (en) * | 2017-05-08 | 2017-08-18 | 重庆电讯职业学院 | A kind of anti-tunnel portal wall damage device and construction method |
| CN113392564A (en) * | 2021-06-29 | 2021-09-14 | 石家庄铁道大学 | Design method of pipe curtain prefabricated structure biasing component |
-
1994
- 1994-09-15 CN CN 94220932 patent/CN2213846Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060774A (en) * | 2017-05-08 | 2017-08-18 | 重庆电讯职业学院 | A kind of anti-tunnel portal wall damage device and construction method |
| CN107060774B (en) * | 2017-05-08 | 2018-12-18 | 重庆电讯职业学院 | A kind of anti-tunnel portal wall damage device and construction method |
| CN113392564A (en) * | 2021-06-29 | 2021-09-14 | 石家庄铁道大学 | Design method of pipe curtain prefabricated structure biasing component |
| CN113392564B (en) * | 2021-06-29 | 2022-09-30 | 石家庄铁道大学 | Design method of pipe curtain prefabricated structure biasing component |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |