CN203008929U - Subway double-line undermining method tunnel lining structure - Google Patents
Subway double-line undermining method tunnel lining structure Download PDFInfo
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- CN203008929U CN203008929U CN 201220730174 CN201220730174U CN203008929U CN 203008929 U CN203008929 U CN 203008929U CN 201220730174 CN201220730174 CN 201220730174 CN 201220730174 U CN201220730174 U CN 201220730174U CN 203008929 U CN203008929 U CN 203008929U
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- section
- arch
- lining
- subway
- lining structure
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Abstract
The utility model discloses a subway double-line undermining method tunnel lining structure which comprises an arch crown and an arch bottom, wherein the arch crown and the arch bottom are connected in an end-to-end mode, the cross section of the arch crown is in a semicircle shape, the cross section of the arch bottom is in a semi-oval shape, and both the arch crown and the arch bottom are a composite type lining which is formed by a preliminary bracing and a secondary lining. Due to the fact that structural styles of the cross section of the tunnel lining are optimized, structural stress of an operation period is improved, the lining structure can bear water and soil load and other additional loads, the size of the cross section of the structure can be reduced as much as possible, the quantity of reinforcement of the lining structure can be decreased, and construction cost is reduced.
Description
Technical field
The utility model relates to tunnel-like, refers to particularly a kind of subway two-wire hidden construction process tunnel lining structure.
Background technology
Subway tunnel must first excavate out corresponding space when construction, then build therein lining cutting.Following characteristics are arranged: 1. be subjected to the impact of engineering geology and hydrogeological conditions larger during constructing tunnel; 2. work under hard conditions, work plane is few and narrow, poor working environment; 3. hidden construction process Construction on Ground impact is less, but embeddingly may cause land subsidence when more shallow; 4. there are a large amount of roach, rubble to deal carefully with.
The selection of job practices should be take geology, landform and ambient conditions and buried depth as Main Basis, and wherein having material to job practices is buried depth.Embedding more shallow engineering is first dug foundation ditch or trench from ground during construction, build backfill again after lining cutting, Here it is cut and cover method.
After buried depth surpassed certain limit, cut and cover method was no longer applicable, and will use hidden construction process instead.Hidden construction process is under given conditions, does not excavate ground, all at the underground method for tunnel construction that excavates and build liner structure.Hidden construction process mainly comprises: drilling and blasting method, shield method, tunnel boring machine method, shallow burial hidden digging, pipe jacking method, immersed tunnelling method etc.Wherein especially use comparatively extensive with shallow burial hidden digging and shield method.
Subway two-wire hidden construction process tunnel adopts the u-shaped cross-section structural shape usually, and this section vault is comprised of multi-section circular arc, and section is more flat, under the water and soil load action, can cause operation phase structure stress unfavorable.If satisfy the requirement of structure stress, general increasing cross dimensions and the increasing structural reinforcement of needing.Do like this, not only can increase difficulty of construction, and can increase construction costs.
Summary of the invention
The purpose of this utility model will overcome the existing deficiency of prior art exactly, and the subway two-wire hidden construction process tunnel lining structure that a kind of structure stress is even, construction costs is lower is provided.
For achieving the above object, the subway two-wire hidden construction process tunnel lining structure that the utility model is designed comprises end to end vault and encircles at the end that the section of vault is semicircle, the section at the arch end is half elliptic, and vault and the arch end consist of composite lining by preliminary bracing and secondary lining.
In such scheme, also be provided with mid-board in the tunnel.Like this, tunnel lining structure is stressed more firm.
Preferably, the semicircular diameter of vault section equals to encircle the half elliptic major axis of end section.Like this, satisfying under the structure stress requirement, the structure section size is minimum, and the liner structure quantity of reinforcement is minimum.
The beneficial effects of the utility model are: by optimizing the tunnel lining section configuration, improve operation phase structure stress, both guaranteed that liner structure can bear the effect of water and soil load and other imposed load, reduce as far as possible again the structure section size and reduce the liner structure quantity of reinforcement, reduce construction costs.Form of fracture of the present utility model can be widely used in subway two-wire hidden construction process tunnel structure.
Description of drawings
Fig. 1 is the structural representation that subway two-wire hidden construction process tunnel lining structure is installed.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Subway two-wire hidden construction process tunnel lining structure as shown in Figure 1 comprises end to end vault 1 and encircles at the end 2, also is provided with mid-board 5 in the tunnel.The section of vault 1 is semicircle, and the section that encircles the end 2 is half elliptic.The semicircular diameter of vault 1 section equals the half elliptic major axis of 2 sections at the bottom of described arch.Vault 1 and the arch end 2, consist of composite linings by preliminary bracing 3 and secondary lining 4.
During the construction of subway two-wire bored tunnel, first During Initial Stage Construction supporting 3; When possessing the execution conditions of secondary lining 4, carry out Second Lining Construction, fill at the bottom of the secondary liner structure at the construction arch end 2 and tunnel, then utilize the secondary liner structure of formwork jumbo construction vault 1; When Second Lining Construction is completed or possess the condition of construction mid-board 5, carry out mid-board 5 constructions.
The utility model is by optimizing tunnel lining section structure and secondary liner structure form, improve operation phase structure stress, both guaranteed that liner structure can bear the effect of water and soil load and other imposed load, reduce as far as possible again the structure section size and reduce the liner structure quantity of reinforcement, reduce construction costs.Form of fracture of the present utility model can be widely used in subway two-wire hidden construction process tunnel structure.
Claims (3)
1. subway two-wire hidden construction process tunnel lining structure, comprise end to end vault (1) and encircle at the end (2), it is characterized in that: the section of described vault (1) is for semicircle, at the bottom of described arch, the section of (2) is half elliptic, and described vault (1) and the arch end (2) consist of composite lining by preliminary bracing (3) and secondary lining (4).
2. subway two-wire hidden construction process tunnel lining structure according to claim 1, is characterized in that: also be provided with mid-board (5) in described tunnel.
3. subway two-wire hidden construction process tunnel lining structure according to claim 1, is characterized in that: the half elliptic major axis of (2) section at the bottom of the semicircular diameter of described vault (1) section equals described arch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220730174 CN203008929U (en) | 2012-12-26 | 2012-12-26 | Subway double-line undermining method tunnel lining structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220730174 CN203008929U (en) | 2012-12-26 | 2012-12-26 | Subway double-line undermining method tunnel lining structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203008929U true CN203008929U (en) | 2013-06-19 |
Family
ID=48600535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220730174 Expired - Lifetime CN203008929U (en) | 2012-12-26 | 2012-12-26 | Subway double-line undermining method tunnel lining structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203008929U (en) |
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2012
- 2012-12-26 CN CN 201220730174 patent/CN203008929U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180521 Address after: 650206 Kunming, Guandu, Yunnan province Guandu town Guangfu Road 5349, Yinhai Cherry Blossom happiness square F Co-patentee after: CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP Co.,Ltd. Patentee after: CHINA RAILWAY SIYUAN GROUP SOUTHWEST SURVEY AND DESIGN Co.,Ltd. Address before: 430063 No. 745, Ping Yuan Road, Yangyuan, Wuchang, Wuhan, Hubei Patentee before: CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |