CN203347801U - Large-section tunnel cross section structure - Google Patents
Large-section tunnel cross section structure Download PDFInfo
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- CN203347801U CN203347801U CN 201320365557 CN201320365557U CN203347801U CN 203347801 U CN203347801 U CN 203347801U CN 201320365557 CN201320365557 CN 201320365557 CN 201320365557 U CN201320365557 U CN 201320365557U CN 203347801 U CN203347801 U CN 203347801U
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Abstract
The utility model discloses a large-section tunnel cross section structure which comprises a top inverted arch, a bottom inverted arch, a left side arch, a right side arch and four corners. The top inverted arch and the bottom inverted arch are vertically, oppositely and symmetrically arranged, the left side arch and the right side arch are horizontally, oppositely and symmetrically arranged, the top inverted arch, the bottom inverted arch, the left side arch, the right side arch and the four corners are all inferior arc sections, the two ends of the bottom inverted arch are respectively in reversed-round connection with the lower end of the left side arch and the lower end of the right side arch through the corners, the chord length of the top inverted arch and the chord length of the bottom inverted arch are larger than the chord length of the left side arch and the chord length of the right side arch, and the curvature of the left side arch and the curvature of the right side arch are larger than the curvature of the top inverted arch and the curvature of the bottom inverted arch. The large-section tunnel cross section structure integrates a shield tunnel section form and an open-excavation tunnel section form. A plurality of sections of arches of different curvatures are matched to form the similar-rectangular cross section, so that the defects of traditional section shield tunnel are overcome on the premise of meeting the using functions of a tunnel.
Description
Technical field
The utility model relates to the tunnel structure technical field, relates in particular to a kind of large cross-section tunnel cross-sectional configuration.
Background technology
In soft clay area, traditional shield tunnel is completed by single circle shield machine construction, and its section form is circular.Along with people, to underground road, the current continuous lifting required of track traffic, shield structure scale constantly increases, and almost all adopts the circular cross section form.Although the shield tunnel technology maturation of circular cross section, but still exist following not enough: effective usable floor area of (1) circular cross section is little, can't take full advantage of structure section; (2) earth volume that the shield structure produces in digging process is large, has directly increased the construction costs in tunnel; (3) the shield tunnel buried depth is shield structure diameter at 1.0D(D) left and right, increased the secretly cutting depth of the section of burying of shield machine working shaft, open cut, indirectly improved engineering risk and cost.
Along with scientific and technical development, a kind of rectangular shield tunnel engineering method that is applicable to soft clay area has obtained deep research both at home and abroad.Existing rectangular shield tunnel can take full advantage of structure section, effectively reduces edpth of tunnel and cost.But existing rectangular shield tunnel exists following not enough:
(1) the rectangular cross section stress performance is poor, and cross section internal force is large;
(2) existing rectangular cross section size is less, can't meet the needs of urban economy development and urban construction, can't in underground Municipal Road Engineering, use especially;
Therefore, those skilled in the art is devoted to develop a kind of large cross-section tunnel cross-sectional configuration, for the characteristics in roads and tunnels structure cross section and the stress characteristic of underground structure, the form of fracture in comprehensive shield tunnel and open cut tunnel, go out the cross section of similar rectangle with the circular fitting of multistage different curvature, realize can also overcoming the defect that traditional shield tunnel exists under the prerequisite that meets tunnel use function.
The utility model content
Because the above-mentioned defect of prior art, the utility model provides a kind of large cross-section tunnel cross-sectional configuration, realization is for the characteristics in roads and tunnels structure cross section and the stress characteristic of underground structure, the form of fracture in comprehensive shield tunnel and open cut tunnel, go out the cross section of similar rectangle with the circular fitting of multistage different curvature, realize can also overcoming the defect that traditional shield tunnel exists under the prerequisite that meets tunnel use function.
For achieving the above object, the utility model provides a kind of large cross-section tunnel cross-sectional configuration, comprise symmetrically arranged in opposite directions top inverted arch and end inverted arch up and down, left and right symmetrically arranged in opposite directions left side arch and the right arch, and four bights, described top inverted arch, end inverted arch, left side arch, the right arch and four bights are minor segment, the both ends of described top inverted arch are connected to respectively two upper ends of described left side arch and the right arch by a described bight rounding, the both ends of inverted arch of the described end are connected to respectively two bottoms of described left side arch and the right arch by a described bight rounding, the chord length of described top inverted arch and end inverted arch is greater than the chord length of described left side arch and the right arch, and the curvature of described left side arch and the right arch is greater than the curvature of described top inverted arch and end inverted arch, described top inverted arch, end inverted arch, left side arch, the right arch and four bights enclose and form a Central Symmetry and axisymmetric shaped face.
Preferably, the intrados radius of curvature of described top inverted arch and end inverted arch is not less than 15000mm, the intrados radius of curvature of described left side arch and the right arch is not less than 5000mm, maximum clear height between described top inverted arch and end inverted arch is not less than 6000mm, and the maximum clear span between described left side arch and the right arch is not less than 9500mm.
Preferably, the intrados radius of curvature in described bight is 1200mm～1800mm.
Preferably, the section thickness in described top inverted arch, end inverted arch, left side arch, the right arch and four bights is all equal, and described gauge is 400mm～600mm.
The beneficial effect of the utility model large cross-section tunnel cross-sectional configuration is as follows:
1, the utility model is constructed the cross section of flat class rectangle, effectively raises utilization rate.
2, cross sectional area reduces, and the earth volume that in construction, excavation produces reduces, and is conducive to reduce cost.
3, the height in same specification cross section is less than circle, therefore its buried depth can reduce, the secretly corresponding minimizing of the structural excavation degree of depth such as the section of burying of active well and open cut, increased engineering safety, and obvious economic benefits are arranged.
4, cross-sectional outling adopts bight rounding form to avoid the on the corner excessive defect of structural internal force of large section, has continued the uniform advantage of circular cross section structure stress.
Technique effect below with reference to accompanying drawing to design of the present utility model, concrete structure and generation is described further, to understand fully the purpose of this utility model, feature and effect.
The accompanying drawing explanation
The schematic diagram of the large cross-section tunnel cross-sectional configuration that Fig. 1 is the present embodiment.
The specific embodiment
The schematic diagram of the large cross-section tunnel cross-sectional configuration that Fig. 1 is the present embodiment.As shown in Figure 1, a kind of large cross-section tunnel cross-sectional configuration of a specific embodiment of the present utility model, comprise symmetrically arranged in opposite directions top inverted arch 1 and end inverted arch 2, left and right symmetrically arranged in opposite directions left side arch 3 and 4 and four bights 5 of arch, the right up and down, top inverted arch 1, end inverted arch 2, left side arch 3,4 and four bights 5 of arch, the right are minor segment, the both ends of top inverted arch 1 are connected to respectively two upper ends of left side arch 3 and the right arch 4 by bight 5 roundings, the both ends of end inverted arch 2 are connected to respectively two bottoms of left side arch 3 and the right arch 4 by bight 5 roundings; The chord length of top inverted arch 1 and end inverted arch 2 is greater than the chord length of left side arch 3 and the right arch 4, and the curvature of left side arch 3 and the right arch 4 is greater than the curvature of top inverted arch 1 and end inverted arch 2; Top inverted arch 1, end inverted arch 2, left side arch 3,4 and four bights 5 of arch, the right enclose and form a Central Symmetry and axisymmetric shaped face.
Concrete, as shown in the figure, the top inverted arch 1 of the present embodiment and intrados radius of curvature R 1 and the R2 of end inverted arch 2 are not less than 15000mm, intrados radius of curvature R 3 and the R4 of left side arch 3 and the right arch 4 are not less than 5000mm, maximum clear height H1 between top inverted arch 1 and end inverted arch 2 is not less than 6000mm, and the maximum clear span H2 between left side arch 3 and the right arch 4 is not less than 9500mm.The intrados radius of curvature R 5 in bight 5 is 1200mm～1800mm.The section thickness in described top inverted arch, end inverted arch, left side arch, the right arch and four bights is all equal, and described gauge is 400mm～600mm.
Exemplary, as shown in the figure, the top inverted arch 1 of the present embodiment and intrados radius of curvature R 1 and the R2 of end inverted arch 2 are 15000mm, intrados radius of curvature R 3 and the R4 of left side arch 3 and the right arch 4 are 5000mm, maximum clear height H1 between top inverted arch 1 and end inverted arch 2 is 6000mm, maximum clear span H2 between left side arch 3 and the right arch 4 is 9500mm, finally by adopting the bight 5 that four radius of curvature R 5 are 1500mm to connect each adjacent end portion, make arc surface be smoothly connected, meet the demand of current requirement and structural safety simultaneously.The section thickness in the top inverted arch of the present embodiment, end inverted arch, left side arch, the right arch and four bights is 500mm, and above-mentioned parts can be that integrated formed structure is constructed the shaped face profile, also can be by a plurality of pipe sheet assembling moulding.
Certainly, in other specific embodiments, can also be according to specific needs, select the circular arc (top inverted arch, end inverted arch, left side arch, the right arch and four bights) of different curvature and size to carry out matching, realize can also overcoming the defect that the circular cross section shield tunnel exists under the prerequisite that meets tunnel use function.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without creative work.Therefore, all technician in the art comply with design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in the determined protection domain by claims.
Claims (4)
1. a large cross-section tunnel cross-sectional configuration, it is characterized in that: comprise symmetrically arranged in opposite directions top inverted arch and end inverted arch, left and right symmetrically arranged in opposite directions left side arch and the right arch and four bights up and down, described top inverted arch, end inverted arch, left side arch, the right arch and four bights are minor segment, the both ends of described top inverted arch are connected to respectively two upper ends of described left side arch and the right arch by a described bight rounding, the both ends of inverted arch of the described end are connected to respectively two bottoms of described left side arch and the right arch by a described bight rounding; The chord length of described top inverted arch and end inverted arch is greater than the chord length of described left side arch and the right arch, and the curvature of described left side arch and the right arch is greater than the curvature of described top inverted arch and end inverted arch; Described top inverted arch, end inverted arch, left side arch, the right arch and four bights enclose and form a Central Symmetry and axisymmetric shaped face.
2. large cross-section tunnel cross-sectional configuration as claimed in claim 1, it is characterized in that: the intrados radius of curvature of described top inverted arch and end inverted arch is not less than 15000mm, the intrados radius of curvature of described left side arch and the right arch is not less than 5000mm, maximum clear height between described top inverted arch and end inverted arch is not less than 6000mm, and the maximum clear span between described left side arch and the right arch is not less than 9500mm.
3. large cross-section tunnel cross-sectional configuration as claimed in claim 2, it is characterized in that: the intrados radius of curvature in described bight is 1200mm～1800mm.
4. described large cross-section tunnel cross-sectional configuration as arbitrary as claims 1 to 3 is characterized in that: the section thickness in described top inverted arch, end inverted arch, left side arch, the right arch and four bights all equates, described gauge is 400mm～600mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320365557 CN203347801U (en) | 2013-06-24 | 2013-06-24 | Large-section tunnel cross section structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320365557 CN203347801U (en) | 2013-06-24 | 2013-06-24 | Large-section tunnel cross section structure |
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| Publication Number | Publication Date |
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| CN203347801U true CN203347801U (en) | 2013-12-18 |
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| CN 201320365557 Expired - Fee Related CN203347801U (en) | 2013-06-24 | 2013-06-24 | Large-section tunnel cross section structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329097A (en) * | 2014-10-20 | 2015-02-04 | 上海市城市建设设计研究总院 | Cross section structure for rectangular shield tunnel |
| CN106157182A (en) * | 2016-07-07 | 2016-11-23 | 云南省交通规划设计研究院 | A kind of decision method of vcehicular tunnel inverted arch mass defect degree |
| CN110700852A (en) * | 2019-10-14 | 2020-01-17 | 中铁第四勘察设计院集团有限公司 | Single-hole double-line mine method tunnel section with mid-partition wall designed by urban D-type vehicle clearance |
| CN110700851A (en) * | 2019-10-14 | 2020-01-17 | 中铁第四勘察设计院集团有限公司 | Single-hole double-line jet fan tunnel section based on urban D-type vehicle clearance design |
| CN110714778A (en) * | 2019-10-14 | 2020-01-21 | 中铁第四勘察设计院集团有限公司 | Single-hole double-line mine method tunnel section with urban D-type vehicle clearance design and without mid-partition wall |
-
2013
- 2013-06-24 CN CN 201320365557 patent/CN203347801U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329097A (en) * | 2014-10-20 | 2015-02-04 | 上海市城市建设设计研究总院 | Cross section structure for rectangular shield tunnel |
| CN106157182A (en) * | 2016-07-07 | 2016-11-23 | 云南省交通规划设计研究院 | A kind of decision method of vcehicular tunnel inverted arch mass defect degree |
| CN106157182B (en) * | 2016-07-07 | 2021-03-23 | 云南省交通规划设计研究院有限公司 | Method for judging quality defect degree of inverted arch of highway tunnel |
| CN110700852A (en) * | 2019-10-14 | 2020-01-17 | 中铁第四勘察设计院集团有限公司 | Single-hole double-line mine method tunnel section with mid-partition wall designed by urban D-type vehicle clearance |
| CN110700851A (en) * | 2019-10-14 | 2020-01-17 | 中铁第四勘察设计院集团有限公司 | Single-hole double-line jet fan tunnel section based on urban D-type vehicle clearance design |
| CN110714778A (en) * | 2019-10-14 | 2020-01-21 | 中铁第四勘察设计院集团有限公司 | Single-hole double-line mine method tunnel section with urban D-type vehicle clearance design and without mid-partition wall |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 |