CN203856477U - Novel spatial-structure urban tunnel formed by down digging and extension of existing tunnel - Google Patents
Novel spatial-structure urban tunnel formed by down digging and extension of existing tunnel Download PDFInfo
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- CN203856477U CN203856477U CN201420258268.0U CN201420258268U CN203856477U CN 203856477 U CN203856477 U CN 203856477U CN 201420258268 U CN201420258268 U CN 201420258268U CN 203856477 U CN203856477 U CN 203856477U
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Abstract
The utility model discloses a novel spatial-structure urban tunnel formed by down digging and extension of an existing tunnel. The novel spatial-structure urban tunnel comprises an existing tunnel cavern and a down-extension cavern, a reinforced concrete panel serving as a lane is cast between the existing tunnel cavern and the down-extension cavern, anchor rods are added at the position from an original hance and a skewback of the existing tunnel cavern, a secondary waterproof layer and a ternary lining are added on the inner side of an existing secondary lining of the existing tunnel carven sequentially, down-extension cavern shotcreting supports, down-extension cavern waterproof layers and down-extension cavern secondary linings are arranged on the side walls of the down-extension cavern sequentially, a down-extension cavern inverted arch is arranged at the bottom of the down-extension cavern, and a vertical wall is arranged in the transverse middle of the down-extension cavern. The urban tunnel is scientific and reasonable in structural design, safe and reliable, the added down-extension cavern is used for pipe network layout of municipal construction and the like under the condition that the structural performance of the tunnel is unaffected, and the problems encountered in municipal construction at present are solved effectively.
Description
Technical field
The utility model belongs to construction of tunnel technical field, has been specifically related to a kind of novel solid structure city tunnel that existing tunnel is improved to design.
Background technology
Along with the develop rapidly of Chinese national economy, the paces of urbanization are accelerated day by day, and resident's sum constantly increases, and original heat distribution pipeline and city planting ductwork can not meet the demand of resident living.Usually there is heat supply, water supply, power supply, for phenomenons such as unsaturated vapor, impeded drainage, communication network are not smooth, have a strong impact on resident's daily life and the brand image in city, the development in restriction city.For this reason, have to consider original heat distribution pipeline and city planting ductwork etc. to carry out reorganization and expansion, to alleviate the pressure of growing tension, improve quality of residents'life, promote City Brands image.
But in Process of Urban Development, resident house gathers along the street, the enlarging of heat distribution pipeline and city planting ductwork etc. is limited by landform, can only below original road, bridge, tunnel, excavate enlarging, particularly below tunnel, excavate enlarging, will existing tunnel structure be caused to larger interference.
Because existing tunnel section is less, narrow space, complex structure, enlarging difficulty is very big, extremely easily causes lining cutting cracking damaged, even subsides.Therefore, study a kind of safe and reasonable and utilize reliably that under existing tunnel, to dig the novel solid structure city tunnel of enlarging significant.
Summary of the invention
The purpose of this utility model is to provide a kind of scientific and reasonable for structure, safe and reliable structure of utilizing existing tunnel to dig the novel solid structure city tunnel that enlarging forms under carrying out.This city tunnel in the impregnable situation of structural safety of existing tunnel, under dig enlarging Chu Xiakuo cavern, arrange etc. for the pipe network of urban construction, efficiently solve the problem that current urban construction runs into.
To achieve these goals, the utility model has adopted following technical scheme:
Utilizing under existing tunnel and dig the novel solid structure city tunnel that enlarging forms, is under existing tunnel is carried out, to dig the city tunnel that enlarging forms, and comprises He Xiakuo cavern of existing tunnel cavern; Wherein, between He Xiakuo cavern of existing tunnel cavern, built steel concrete panel, as runway; Former haunch to arch springing place in existing tunnel cavern has additional anchor pole, sets up successively waterproofing course and for the third time lining cutting for the second time in the existing secondary lining inner side of existing tunnel cavern; On the sidewall of Xia Kuo cavern, be provided with successively Xia Kuo cavern bolt-spary supports, Xia Kuo cavern waterproofing course and Xia Kuo cavern secondary lining; Be provided with Xia Kuo cavern inverted arch in the bottom of Xia Kuo cavern; In Xia Kuo cavern, lateral mid-point is provided with wall, and the upper and lower end of wall is connected with steel concrete panel, Xia Kuo cavern inverted arch respectively.
City tunnel of the present utility model is not debasing the standard, is not reducing use function, do not affecting under the prerequisite of structural safety, by set up anchor pole and lining cutting for the third time in existing tunnel, can prevent from causing in lower expansion process existing tunnel stress concentrate or be out of shape excessive and cause structural damage, ensure structural safety; Set up waterproofing course simultaneously, improved waterproof effect; Lateral mid-point in Xia Kuo cavern is built wall, is conducive to improve stability and the globality of road surface running vehicle guidance tape, guarantees structural safety; Tunnel road surface adopts steel concrete panel, has improved rigidity and the stability of structure, guarantees structural safety.
Further illustrate as of the present utility model, the waterproofing course for the second time in above-described existing tunnel cavern is connected with Xia Kuo cavern waterproofing course, and Xia Kuo cavern waterproofing course extends to Xia Kuo cavern bottom side to gutter place, the effective waterproofing system of formation sealing.Can effectively avoid setting up anchor pole like this time, cause existing waterproof and water drainage system is damaged and the percolating water that produces, affect attractive in appearance and safety.
Further illustrate as of the present utility model, the lining cutting for the third time in above-described existing tunnel cavern and Xia Kuo cavern secondary lining are connected to form entirety, jointly bear the load in tunnel.Be conducive to like this improve structural stability and globality, while avoiding setting up anchor pole, cause honeycomb breakage, affect attractive in appearance and safety.
Compared with prior art, the beneficial effect the utlity model has:
1. not debasing the standard, do not reduce under the prerequisite that uses function, excavate enlarging below existing tunnel, form stereochemical structure pattern, the Xia Kuo cavern newly building up can be for urban construction, efficiently solves the problem that in current urban construction, pipe network is arranged; And the utility model is compared with traditional newly-increased cavern or side enlarging, effectively conserve space, reduces and takes up an area, and reduces scale, saves and invests.
2. compared with side enlarging, this pattern is dwindled tunnel span, reduces the ratio of width to height, closer to circular configuration, is more conducive to improve structure stress, reduces supporting intensity, saves investment.
3. set up anchor pole at former haunch and arch springing, prevent that existing tunnel stress from concentrating or being out of shape excessive and causing structural damage.
4. set up waterproofing course to extending tunnel bottom lateral row ditch place in existing tunnel secondary lining inner side, can form complete effective waterproof and water drainage system, while avoiding setting up anchor pole, cause existing waterproof and water drainage system is damaged and the percolating water that produces, affect attractive in appearance and safety.
5. in the newly-increased lining cutting for the third time of existing tunnel, be conducive to improve structural stability and globality, while avoiding setting up anchor pole, cause honeycomb breakage, affect attractive in appearance and safety.
6. build wall in the lateral mid-point of Xia Kuo cavern, be conducive to improve stability and the globality of road surface running vehicle guidance tape, guarantee structural safety.
7. road structure adopts armored concrete slab, is conducive to improve rigidity and the stability of structure, guarantees structural safety.
8. under the existing tunnel in uninterrupted traffic situation of the present invention, dig enlarging construction method and can be applied to other field, can be applicable to heat distribution pipeline, city planting ductwork, air defense take refuge cavern, motor vehicle and bicycle and sidewalk enlarging etc. simultaneously, applied range, has wide application value.
Brief description of the drawings
Fig. 1 is the cross section structure schematic diagram of existing tunnel in prior art.
Fig. 2 is the cross section structure schematic diagram of the utility model one embodiment.
Reference numeral: 1-anchor pole, 2-is waterproofing course for the second time, and 3-is lining cutting for the third time, 4-Xia Kuo cavern bolt-spary supports, 5-Xia Kuo cavern waterproofing course, 6-Xia Kuo cavern secondary lining, 7-Xia Kuo cavern inverted arch, 8-wall, 9-steel concrete panel.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further illustrated, but protection domain of the present utility model is not only confined to following examples.
Embodiment:
As shown in Figure 2, a kind of utilization under existing tunnel dug the novel solid structure city tunnel that enlarging forms, and is under existing tunnel is carried out, to dig the city tunnel that enlarging forms, and comprises He Xiakuo cavern of existing tunnel cavern; Wherein, between He Xiakuo cavern of existing tunnel cavern, built steel concrete panel 9, as runway; Former haunch to arch springing place in existing tunnel cavern has additional anchor pole 1, sets up successively waterproofing course 2 and lining cutting for the third time 3 for the second time in the existing secondary lining inner side of existing tunnel cavern; On the sidewall of Xia Kuo cavern, be provided with successively Xia Kuo cavern bolt-spary supports 4, Xia Kuo cavern waterproofing course 5 and Xia Kuo cavern secondary lining 6; Be provided with Xia Kuo cavern inverted arch 7 in the bottom of Xia Kuo cavern; In Xia Kuo cavern, lateral mid-point is provided with wall 8, and the upper and lower end of wall 8 is connected with steel concrete panel 9, Xia Kuo cavern inverted arch 7 respectively.Waterproofing course for the second time 2 in described existing tunnel cavern is connected with Xia Kuo cavern waterproofing course 5, and Xia Kuo cavern waterproofing course 5 extends to Xia Kuo cavern bottom side to gutter place, form the effective waterproofing system of sealing, while avoiding setting up anchor pole 1, cause existing waterproof and water drainage system is damaged and the percolating water that produces, affect attractive in appearance and safety.Lining cutting for the third time 3 in described existing tunnel cavern is connected to form entirety with Xia Kuo cavern secondary lining 6, jointly bears the load in tunnel, is conducive to improve structural stability and the globality of city tunnel.
This city tunnel in the impregnable situation of structural safety of existing tunnel, under dig enlarging Chu Xiakuo cavern, arrange etc. for the pipe network of urban construction, efficiently solve the problem that current urban construction runs into.
Claims (3)
1. utilizing under existing tunnel and dig the novel solid structure city tunnel that enlarging forms, is under existing tunnel is carried out, to dig the city tunnel that enlarging forms, and comprises He Xiakuo cavern of existing tunnel cavern; It is characterized in that: between He Xiakuo cavern of existing tunnel cavern, built steel concrete panel (9), as runway; Former haunch to arch springing place in existing tunnel cavern has additional anchor pole (1), sets up successively waterproofing course (2) and lining cutting for the third time (3) for the second time in the existing secondary lining inner side of existing tunnel cavern; On the sidewall of Xia Kuo cavern, be provided with successively Xia Kuo cavern bolt-spary supports (4), Xia Kuo cavern waterproofing course (5) and Xia Kuo cavern secondary lining (6); Be provided with Xia Kuo cavern inverted arch (7) in the bottom of Xia Kuo cavern; Be provided with wall (8) in Xia Kuo cavern lateral mid-point, the upper and lower end of wall (8) is connected with steel concrete panel (9), Xia Kuo cavern inverted arch (7) respectively.
2. according to claim 1 utilization under existing tunnel dug and extended the novel solid structure city tunnel forming, it is characterized in that: the waterproofing course for the second time (2) in described existing tunnel cavern is connected with Xia Kuo cavern waterproofing course (5), and Xia Kuo cavern waterproofing course (5) extends to Xia Kuo cavern bottom side to gutter place, form the effective waterproofing system of sealing.
3. according to claim 1 utilization under existing tunnel dug and extended the novel solid structure city tunnel forming, it is characterized in that: the lining cutting for the third time (3) in described existing tunnel cavern is connected to form entirety with Xia Kuo cavern secondary lining (6), jointly bears the load in tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420258268.0U CN203856477U (en) | 2014-05-20 | 2014-05-20 | Novel spatial-structure urban tunnel formed by down digging and extension of existing tunnel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420258268.0U CN203856477U (en) | 2014-05-20 | 2014-05-20 | Novel spatial-structure urban tunnel formed by down digging and extension of existing tunnel |
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| CN203856477U true CN203856477U (en) | 2014-10-01 |
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| CN201420258268.0U Active CN203856477U (en) | 2014-05-20 | 2014-05-20 | Novel spatial-structure urban tunnel formed by down digging and extension of existing tunnel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587324A (en) * | 2015-12-29 | 2016-05-18 | 中铁五局集团有限公司 | Construction method for expanding excavation of steel grid support section at tunnel entrance |
| CN111472389A (en) * | 2020-05-06 | 2020-07-31 | 中车建设工程有限公司 | Open excavation construction method and structure for rebuilding existing tunnel into double-layer tunnel |
-
2014
- 2014-05-20 CN CN201420258268.0U patent/CN203856477U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587324A (en) * | 2015-12-29 | 2016-05-18 | 中铁五局集团有限公司 | Construction method for expanding excavation of steel grid support section at tunnel entrance |
| CN105587324B (en) * | 2015-12-29 | 2017-11-24 | 中铁五局集团有限公司 | Dig the construction method of tunnel portal section supporting steel grating section |
| CN111472389A (en) * | 2020-05-06 | 2020-07-31 | 中车建设工程有限公司 | Open excavation construction method and structure for rebuilding existing tunnel into double-layer tunnel |
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