CN203891071U - Road structure of immersed tube tunnels - Google Patents
Road structure of immersed tube tunnels Download PDFInfo
- Publication number
- CN203891071U CN203891071U CN201420273032.4U CN201420273032U CN203891071U CN 203891071 U CN203891071 U CN 203891071U CN 201420273032 U CN201420273032 U CN 201420273032U CN 203891071 U CN203891071 U CN 203891071U
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- immersed tube
- road structure
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- mixture layer
- bituminous mixture
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Abstract
The utility model relates to a road structure of immersed tube tunnels. The road structure comprises a concrete pressure weight layer, a steel fiber reinforced concrete base layer, a lower asphalt mixture layer and an upper asphalt mixture layer. The structures of the four layers are sequentially paved along the direction from immersed tubes to a road surface, and grooves with certain widths are formed in joints of tube joint sections of the immersed tube tunnels by means of cutting after the steel fiber concrete base layer and the lower asphalt mixture layer are completely paved, and the grooves are filled with TST aggregate elastic materials, so that TST aggregate elastic expansion joints can be formed; upper-layer asphalt mixtures are paved on the grooves after the grooves are completely filled with the TST aggregate elastic materials. The road structure has the advantages that the road structure is excellent in deformation adaptability, cracks at joints of the joint sections of the immersed tube tunnels can be reduced, and excellent flatness of the road surface can be guaranteed.
Description
Technical field
The utility model relates to a kind of road structure, is specifically related to a kind of immersed tube tunnel road structure.
Background technology
Submerged tunnel, through the development of more than 100 years, has formed four kinds of typical construction methods such as Mining Method, shield method, cofferdam cut and cover method and immersed tunnelling method.Wherein,, first shift to an earlier date prefabricated tunnel pipeline section when the subaqueous tunnel of immersed tunnelling method construction, be then fixed on accordingly under water and couple together.Immersed tube tunnel has numerous advantages, for example it is lower to foundation requirement, be specially adapted to soft base, riverbed or sea bed compared with simple and easy in the project site of carrying out foundation trench excavation with dredging plant waterborne: buried depth is little, and the tunnel line overall length including linkage section significantly shortens compared with Mining Method and shield tunnel; Immersed tube tunnel end surface shape can be justified can be square, selects flexibly; Each operation such as is mated formation in foundation trench excavation, prefabrication of tube section, floating and sinking and inside can parallel operations, and interfering with each other less, pipeline section quality is easy to control, short construction period etc.Therefore immersed tube tunnel from the date of birth, is more and more favored.
Finally being formed by connecting because immersed tube tunnel has a section prefabricated tube section, for adapting to foundation deformation under operation and earthquake operating mode, is flexible joint between tube coupling; The default dual flexible water stop of transverse joint between sections (immersed tube tunnel tube coupling segmental joints) and shear connector, be out of shape to meet sections the Shear transfer and the Mi Shui requirement that cause; Therefore can there is longitudinal strain in sinking tunnel section joint, and distortion size is difference to some extent with different situations, and generally, in 0～5cm, the malformation of sections joint causes road surface to be ftractureed the most at last, thereby causes surface evenness reduction.In current domestic and foreign literature, have no the special disposal of carrying out that sinking tunnel section joint road structure is arranged to stress absorbing layer and shrinkage joint, therefore, for ensureing surface evenness, reducing cracking, need to process the pavement joint at sinking tunnel section place.
Summary of the invention
For existing sinking tunnel section joint, longitudinal strain causes road surface to occur the problem of cracking, the purpose of this utility model is to provide a kind of immersed tube tunnel road structure, and the treatment technology that this road structure stresses to improve immersed tube tunnel tube coupling segmental joints road surface is to ensure sections joint surface evenness, to reduce cracking.
For this reason, the immersed tube tunnel road structure that the utility model provides comprises concrete ballast layer, steel fibrous concrete basic unit, lower bituminous mixture layer and upper bituminous mixture layer, and this four-layer structure according to immersed tube to road surface direction successively making,
In described steel fibrous concrete basic unit and lower bituminous mixture layer, be provided with the flexible belt of seam, the flexible belt of this seam is positioned at immersed tube tunnel tube coupling segmental joints top.
Preferably, the axial cross section of the flexible belt of described seam is rectangle.
Preferably, the width of the flexible belt of described seam is 40cm～60cm.
Preferably, between described lower bituminous mixture layer and steel fibrous concrete basic unit, making has stress absorbing layer.
Preferably, the making thickness of described upper bituminous mixture layer is 4cm～5cm.
Preferably, the making thickness of described lower bituminous mixture layer is 6cm～8cm.
Preferably, the making thickness of described steel fibrous concrete basic unit is 18cm～20cm.
Preferably, the making thickness of described stress absorbing layer is 1cm～2cm.
The utility model compared with prior art has the following advantages:
The immersed tube joint of road structure of the present utility model has adopted TST rubble elastomeric material to have larger deformability, there is elastic recovery capability well, can meet the requirement of seam crossing distortion stroke, the continuous making of upper strata bituminous mixture SMA-13, thus guarantee that road surface has good planeness and non-deformability.
Brief description of the drawings
Below in conjunction with embodiment and accompanying drawing, the utility model will be further described.
Fig. 1 is structure reference view of the present utility model;
Bituminous mixture layer under the upper bituminous mixture layer of each coded representation: 1-, 2-, 3-steel fibrous concrete basic unit, 4-stress absorbing layer, 5-concrete ballast layer, the flexible belt of 6-seam, 7-immersed tube tunnel, 8-immersed tube tunnel tube coupling segmental joints in figure.
Detailed description of the invention
The axial of immersed tube, the i.e. direction of traffic of road of axially referring to described in the utility model.
Thickness described in the utility model refers to along immersed tube thickness radially.
Width described in the utility model refers to the width axial along immersed tube.
The utility model immersed tube tunnel road structure comprises layers of asphalt mixture surface course, be respectively: upper bituminous mixture layer 1 and lower bituminous mixture layer 2, it is the SMA-13 material making of 13mm that upper bituminous mixture layer 1 adopts nominal maximum particle diameter, and making thickness is 4cm～5cm; It is the SMA-20 material making of 19mm that lower bituminous mixture layer 2 adopts nominal maximum particle diameter, and making thickness is 6cm～8cm, to meet the demand of road surface supporting capacity.
The material of steel fibrous concrete basic unit 3 is steel fibrous concrete, and thickness is 18cm～20cm; Steel fibrous concrete material due to admixture in concrete material steel fibre, thereby there is the performance of better opposing stretching and resistance to deformation, the crack that can effectively reduce basic unit.
Between lower bituminous mixture layer 2 and steel fibrous concrete basic unit 3, be provided with stress absorbing layer 4, described stress absorption layer thickness is 1cm～2cm.Its effect is mainly the stress state of improving between basic unit and lower floor's bituminous mixture, and in the time that part crack appears in basic unit, stress absorbing layer can effectively stop basic crack to lower floor's bituminous mixture development.
Steel fibrous concrete basic unit 3 is concrete ballast layer 5 below, the part that this layer is tunnel structure.
In Fig. 1, immersed tube tunnel tube coupling segmental joints 8 is in the effect of external force load, and axial displacement can occur two adjacent tube couplings.Sections joint pavement joint processing scheme of the present utility model is the part on immersed tube tunnel road surface, concrete installation position is positioned at immersed tube tunnel tube coupling segmental joints 8 places, immersed tube tunnel road surface is after tunnel structure has been constructed, making tunnel internal bottom for vehicle and the current layer structure of personnel.
Work progress is as follows:
After immersed tube tunnel 7 has been constructed, start at the bottom of immersed tube tunnel paving structure, construct according to the making order of steel fibrous concrete basic unit 3, stress absorbing layer 4 and lower bituminous mixture layer 2.
After steel fibrous concrete basic unit 3, stress absorbing layer 4 and lower bituminous mixture layer 2 making complete, at immersed tube tunnel tube coupling segmental joints 8 places, steel fibrous concrete and lower bituminous mixture layer 2 are slotted, groove width is 40cm～60cm, the degree of depth is with the gross thickness of lower bituminous mixture layer 2 and steel fibrous concrete basic unit 3 and 2cm stress absorbing layer 4, fill TST rubble elastomeric material at fluting place and form the flexible belt 6 of seam, specifically by after elastic-plastic material TST heat fused, pour in the rubble through cleaning heating, formed TST rubble elastic expansion joint; After completing TST rubble elastomeric material and filling, then making upper layer bituminous mixture SMA-13 thereon.
Sections joint treatment of road surfaces scheme of the present utility model has adopted elastic recovery capability good, can adapt to the TST rubble elastomeric material of moderate finite deformation, has strengthened the ability at ground surface material opposing sections joint distortion place; Upper strata bituminous mixture paves continuously on the other hand, has ensured that road surface has good continuity and planeness.
Claims (8)
1. an immersed tube tunnel road structure, is characterized in that, comprises concrete ballast layer, steel fibrous concrete basic unit, lower bituminous mixture layer and upper bituminous mixture layer, and this four-layer structure according to immersed tube to road surface direction successively making; In described steel fibrous concrete basic unit and lower bituminous mixture layer, be provided with the flexible belt of seam, the flexible belt of this seam is positioned at immersed tube tunnel tube coupling segmental joints top.
2. immersed tube tunnel road structure as claimed in claim 1, is characterized in that, the axial cross section of the flexible belt of described seam is rectangle.
3. immersed tube tunnel road structure as claimed in claim 1, is characterized in that, the width of the flexible belt of described seam is 40cm～60cm.
4. immersed tube tunnel road structure as claimed in claim 1, is characterized in that, between described lower bituminous mixture layer and steel fibrous concrete basic unit, making has stress absorbing layer.
5. immersed tube tunnel road structure as claimed in claim 1, is characterized in that, the making thickness of described upper bituminous mixture layer is 4cm～5cm.
6. immersed tube tunnel road structure as claimed in claim 1, is characterized in that, the making thickness of described lower bituminous mixture layer is 6cm～8cm.
7. immersed tube tunnel road structure as claimed in claim 1, is characterized in that, the making thickness of described steel fibrous concrete basic unit is 18cm～20cm.
8. immersed tube tunnel road structure as claimed in claim 4, is characterized in that, the making thickness of described stress absorbing layer is 1cm～2cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420273032.4U CN203891071U (en) | 2014-05-26 | 2014-05-26 | Road structure of immersed tube tunnels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420273032.4U CN203891071U (en) | 2014-05-26 | 2014-05-26 | Road structure of immersed tube tunnels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203891071U true CN203891071U (en) | 2014-10-22 |
Family
ID=51717492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420273032.4U Expired - Fee Related CN203891071U (en) | 2014-05-26 | 2014-05-26 | Road structure of immersed tube tunnels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203891071U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104652482A (en) * | 2015-02-16 | 2015-05-27 | 中交一航局第二工程有限公司 | Immersed tube joint mounting and dismounting device for sea bottom immersed tube tunnel |
| CN105839671A (en) * | 2016-05-23 | 2016-08-10 | 南昌市政公用投资控股有限责任公司 | Floating layer structure of dock bottom of dry dock of immersed tube tunnel |
| CN109868839A (en) * | 2019-03-26 | 2019-06-11 | 林城 | A kind of immersed tube tunnel and its construction method |
-
2014
- 2014-05-26 CN CN201420273032.4U patent/CN203891071U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104652482A (en) * | 2015-02-16 | 2015-05-27 | 中交一航局第二工程有限公司 | Immersed tube joint mounting and dismounting device for sea bottom immersed tube tunnel |
| CN105839671A (en) * | 2016-05-23 | 2016-08-10 | 南昌市政公用投资控股有限责任公司 | Floating layer structure of dock bottom of dry dock of immersed tube tunnel |
| CN109868839A (en) * | 2019-03-26 | 2019-06-11 | 林城 | A kind of immersed tube tunnel and its construction method |
| CN109868839B (en) * | 2019-03-26 | 2024-04-19 | 林城 | Immersed tube tunnel and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20160526 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |