CN208380592U - On the contignation across existing proximity tunnel - Google Patents
On the contignation across existing proximity tunnel Download PDFInfo
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- CN208380592U CN208380592U CN201820740174.5U CN201820740174U CN208380592U CN 208380592 U CN208380592 U CN 208380592U CN 201820740174 U CN201820740174 U CN 201820740174U CN 208380592 U CN208380592 U CN 208380592U
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Abstract
The utility model provides the contignation across existing proximity tunnel on a kind of.Contignation include include at least two armored concrete stringers and positioned at existing proximity tunnel top two sides non-proximity region two support constructions, wherein proximity region of the armored concrete stringer across the top in existing proximity tunnel, the molding of armored concrete stringer one-time-concreting, the both ends of armored concrete stringer are affixed by reinforced concrete structure with two support constructions respectively.The load of existing proximity tunnel upper proximity region newly built tunnels can be transferred to the non-proximity region of existing proximity tunnel upper two sides using the contignation in the utility model through armored concrete stringer, it avoids load from directly acting on the cracking on existing proximity tunnel and causing existing proximity tunnel, ensure that the safe operation in existing proximity tunnel.
Description
Technical field
The utility model relates to constructing tunnel field more particularly to it is a kind of on the contignation across existing proximity tunnel.
Background technique
Continuous development with Construction of Urban Rail Traffic and the reduction increasingly using land resource, build in city tunnel
If middle Multiple tunnel crossings on different level phenomenon is increasing, is constructing and runing how process middle and upper part newly built tunnels ensure that lower part is first built
The structure in existing proximity tunnel is the significant challenge that current Tunnel Engineering technical staff faces safely.Currently, to ensure newly-built tunnel
Road smoothly on across existing proximity tunnel, in proximity weakness zone to taking branch's mechanical excavation to add with folder rock slip casting newly built tunnels more
The construction technology of solid phase binding, to reduce the disturbance excavated to the existing proximity tunnel of country rock and lower part.But proximity region two serves as a contrast
Still continue the design and construction method in non-proximity region, traditional inverted arch or floor structure are especially still used in newly built tunnels bottom
Form thereby results in top newly built tunnels load (including dead load, part pressure from surrounding rock and construction, operation phase vehicular load)
It will bear directly against the folder petrosa position between upper and lower tunnel；When folder rock is relatively thin, bearing capacity is low, which can further make
For the existing proximity tunnel in lower part, it is be easy to cause the cracking in existing proximity tunnel, influences the safe operation in existing proximity tunnel.
Utility model content
In view of the foregoing, the utility model provides the contignation across existing proximity tunnel on a kind of, passes through beam slab
Newly built tunnels are acted on the non-proximity area of the load transmission on existing proximity tunnel to existing proximity tunnel upper two sides by structure
The protection to existing proximity tunnel is realized in domain.
To achieve the above object, the utility model discloses the contignations across existing proximity tunnel on a kind of, comprising:
At least two armored concrete stringers, proximity area of the armored concrete stringer across the top in existing proximity tunnel
Domain, the armored concrete stringer one-time-concreting molding；
Two support constructions positioned at the non-proximity region of the top two sides in existing proximity tunnel, the support construction are reinforcing bar
Concrete structure, the both ends of the armored concrete stringer are affixed by armored concrete with two support constructions respectively.
The utility model has the beneficial effects that: by by armored concrete stringer across the close of existing proximity tunnel upper
Region is connect, and it is affixed with the support construction in the non-proximity region for being located at existing proximity tunnel upper two sides, can will act on
Load (or active force) on armored concrete stringer is transferred in support construction, and then avoids existing proximity tunnel upper proximity
The load of region newly built tunnels directly acts on existing proximity tunnel, plays protective effect to existing proximity tunnel, effectively protects
The operation security in existing proximity tunnel is demonstrate,proved.
Contignation across existing proximity tunnel on the utility model is a kind of further improvement lies in that, further include with it is described
The molding reinforced concrete beams of armored concrete stringer formed by integrally casting.
The further improvement of contignation across existing proximity tunnel on the utility model is a kind of is, including multiple
Every the reinforced concrete beams of setting.
Contignation across existing proximity tunnel on the utility model is a kind of further improvement lies in that, further include being fixed in
The bottom plate of the armored concrete stringer, the armored concrete stringer, which is reserved with, connects a batch reinforcing bar, and the bottom plate is connect by described
Stubble reinforcing bar is fixed in the armored concrete stringer.
The further improvement of contignation across existing proximity tunnel on the utility model is a kind of is that the bottom plate is
Reinforced concrete structure.
Detailed description of the invention
Fig. 1 is the plan view in the utility model between newly built tunnels and existing proximity tunnel.
Fig. 2 is proximity region newly built tunnels schematic cross-sectional view in the utility model.
Fig. 3 is the existing proximity tunnel cross section schematic diagram in proximity region in the utility model.
Specific embodiment
For the benefit of to the understanding of the utility model, it is illustrated with reference to the accompanying drawings and embodiments.
Refering to fig. 1 to Fig. 3 it is found that the utility model discloses the contignations across existing proximity tunnel on a kind of, including
Two support constructions at least two armored concrete stringers 3 and the non-proximity region positioned at the top two sides in existing proximity tunnel 1 (are wrapped
Include the inverted arch structure 22 of construction section and to be onstructed section of inverted arch structure 23), wherein armored concrete stringer 3 is across existing proximity
The proximity region of the top in tunnel 1, the molding of 3 one-time-concreting of armored concrete stringer, support construction is reinforced concrete structure, steel
The both ends of reinforced concrete stringer 3 are affixed by armored concrete with two support constructions respectively.In the present embodiment, by the way that reinforcing bar is mixed
Proximity region of the solidifying soil stringer 3 across existing proximity tunnel 1 above, and by its with positioned at existing 1 top two sides of proximity tunnel
The support construction in non-proximity region is affixed, and its object is to the load transmissions that will act on armored concrete stringer 3 to support
In structure, the load of existing proximity tunnel upper proximity region newly built tunnels is avoided to directly act on existing proximity tunnel 1, it is right
Existing proximity tunnel 1 plays protective effect, and the operation security in existing proximity tunnel 1 has been effectively ensured；Armored concrete stringer 3
Using the molding construction technology of one-time-concreting, construction joint can be generated to avoid due to using section construction, improve armored concrete
The structural strength of stringer 3.In the present embodiment, connected between armored concrete stringer 3 and support construction by armored concrete, it can
To guarantee bonding strength between the two.In actual use, armored concrete stringer 3 is support on two linings 21 of newly built tunnels 2
Bottom, will be in the load transmission to support construction of newly built tunnels 2 by armored concrete stringer 3.
Further, further include and the molding reinforced concrete beams 4 of 3 formed by integrally casting of armored concrete stringer.This implementation
In example, armored concrete stringer 3 and reinforced concrete beams 4 use the molding construction technology of formed by integrally casting, can be to avoid reinforcing bar
The junction of concrete stringer 3 and reinforced concrete beams 4 generates construction joint, and the structure that contignation entirety is effectively ensured is strong
Degree.Further, including multiple spaced reinforced concrete beams 4, the structural strength of contignation is further increased.
Preferably, including three reinforced concrete beams 4, it is connected to 3 both ends of armored concrete stringer and midpoint position.This implementation
In example, reinforced concrete beams 4 also use the molding construction technology of formed by integrally casting, avoid producing due to using section construction in beam body
Raw construction joint, improves the structural strength of reinforced concrete beams 4.
It further, further include the bottom plate 5 for being fixed in armored concrete stringer 3, armored concrete stringer 3, which is reserved with, connects stubble
Reinforcing bar, bottom plate 5 are fixed in armored concrete stringer 3 by connecing a batch reinforcing bar.The effect of bottom plate is vehicle in later period newly built tunnels 2
And the passage of pedestrian, and the load that will act on bottom plate 5 is transferred to the non-proximity area of existing 1 two sides of proximity tunnel through stringer 3
Domain is further ensured that the safe operation in the existing proximity tunnel 1 of lower part.In the present embodiment, bottom plate 5 is reinforced concrete structure.
In the utility model, bottom plate 5 is fixed in reinforced concrete beams 4 and armored concrete stringer 3 simultaneously；Wherein, armored concrete
Crossbeam 4 is reserved with the bonding strength for connecing a batch reinforcing bar, guaranteeing between the two for affixed bottom plate 5.
As shown in figure 3, two support constructions include (i.e. separate positioned at existing 1 upper right of proximity tunnel in the utility model
The side of face) non-proximity region construction section and be located at existing 1 upper left of proximity tunnel (i.e. close to face
Side) non-to be onstructed section for connecing region, the direction of right-to-left is the excavation direction of newly built tunnels in Fig. 3.Wherein, two support knot
Structure is respectively the inverted arch structure 22 of construction section and to be onstructed section of inverted arch structure 23；Further, the inverted arch knot of construction section
Structure 22 is reserved with for connecing a batch reinforcing bar with what contignation (including armored concrete stringer 3 and reinforced concrete beams 4) was connect.
In the utility model, support construction is fixed in armored concrete stringer 3 and reinforced concrete beams 4 simultaneously.
In the utility model, the vertical range between newly built tunnels 2 and 1 liang of existing proximity tunnel tunnel floor is H, is created
2 section width of tunnel is B, and the length L of armored concrete stringer 3 is greater than or equal to B+2H.
In the utility model, armored concrete stringer 3, reinforced concrete beams 4 and bottom plate 5 form a complete power transmission
System, and eventually by armored concrete stringer 3 by the load of existing 1 top proximity region newly built tunnels 2 of proximity tunnel (including
Dead load, part pressure from surrounding rock and the construction of newly built tunnels 2, operation phase vehicular load) it is transferred to existing 1 top of proximity tunnel
The non-proximity region of two sides avoids directly acting on existing proximity tunnel 1, guarantees the safe operation in existing proximity tunnel 1.
The beneficial effect of contignation across existing proximity tunnel on the utility model is a kind of includes:
1. passing through two supports that armored concrete stringer is connected to the non-proximity region of two sides above existing newly built tunnels
Structure, can be by the load transmission of existing proximity tunnel upper proximity region newly built tunnels to existing proximity tunnel upper two sides
Non- proximity region avoids above-mentioned load from directly acting on existing proximity tunnel and causes the cracking in existing proximity tunnel, guarantees both
There is the safe operation in proximity tunnel.
2. by forming and passing through armored concrete for armored concrete stringer and reinforced concrete beams formed by integrally casting
It realizes the connection between armored concrete stringer (reinforced concrete beams) and support construction, constitutes a stable force transferring structure；
It, can be to avoid armored concrete stringer and reinforcing bar by forming armored concrete stringer and reinforced concrete beams formed by integrally casting
Concrete beam junction generates construction joint, guarantees the structural strength of contignation entirety；It is molding by using one-time-concreting
Construction method realize reinforced concrete beams and armored concrete stringer construction can to avoid due to using section construction in beam
Body generates construction joint.Bottom plate may further ensure that the structural strength of contignation entirety using reinforced concrete structure.
3. structure is simple, convenient for construction.
It in conjunction with attached drawing and applies example above the utility model is described in detail, those skilled in the art can root
Many variations example is made to the utility model according to above description.Thus, certain details in embodiment should not constitute practical to this
Novel restriction, the utility model will be using the ranges that the appended claims define as the protection scope of the utility model.
Claims (5)
1. the contignation across existing proximity tunnel on a kind of characterized by comprising
At least two armored concrete stringers, the armored concrete stringer across the proximity region of the top in existing proximity tunnel,
The armored concrete stringer one-time-concreting molding；
Two support constructions positioned at the non-proximity region of the top two sides in existing proximity tunnel, the support construction are reinforced concrete
Soil structure, the both ends of the armored concrete stringer are affixed by armored concrete with two support constructions respectively.
2. the contignation across existing proximity tunnel on according to claim 1, it is characterised in that: further include and the steel
The molding reinforced concrete beams of reinforced concrete stringer formed by integrally casting.
3. the contignation across existing proximity tunnel on according to claim 2, it is characterised in that: set including multiple intervals
The reinforced concrete beams set.
4. the contignation across existing proximity tunnel on according to claim 1, it is characterised in that: further include being fixed in institute
The bottom plate of armored concrete stringer is stated, the armored concrete stringer, which is reserved with, connects a batch reinforcing bar, and the bottom plate connects stubble by described
Reinforcing bar is fixed in the armored concrete stringer.
5. the contignation across existing proximity tunnel on according to claim 4, it is characterised in that: the bottom plate is reinforcing bar
Concrete structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820740174.5U CN208380592U (en) | 2018-05-18 | 2018-05-18 | On the contignation across existing proximity tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820740174.5U CN208380592U (en) | 2018-05-18 | 2018-05-18 | On the contignation across existing proximity tunnel |
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| CN208380592U true CN208380592U (en) | 2019-01-15 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424982A (en) * | 2019-07-02 | 2019-11-08 | 中国建筑第八工程局有限公司 | The reinforcement means of proximity lamination tunnel folder rock |
| CN112329107A (en) * | 2020-11-05 | 2021-02-05 | 中铁二院工程集团有限责任公司 | Bridge span type bearing structure of cross tunnel proximity region and calculation method |
| CN112942300A (en) * | 2021-02-07 | 2021-06-11 | 杭州市市政工程集团有限公司 | Reinforcing structure of soil body above existing tunnel and construction method thereof |
| CN113374496A (en) * | 2021-06-23 | 2021-09-10 | 上海隧道工程有限公司 | Upper-crossing tunnel structure and construction method |
| CN114033389A (en) * | 2021-10-28 | 2022-02-11 | 中国建筑土木建设有限公司 | Construction method of mountain city tunnel crossing existing railway |
-
2018
- 2018-05-18 CN CN201820740174.5U patent/CN208380592U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424982A (en) * | 2019-07-02 | 2019-11-08 | 中国建筑第八工程局有限公司 | The reinforcement means of proximity lamination tunnel folder rock |
| CN112329107A (en) * | 2020-11-05 | 2021-02-05 | 中铁二院工程集团有限责任公司 | Bridge span type bearing structure of cross tunnel proximity region and calculation method |
| CN112329107B (en) * | 2020-11-05 | 2022-05-06 | 中铁二院工程集团有限责任公司 | Bridge span type bearing structure of cross tunnel proximity region and calculation method |
| CN112942300A (en) * | 2021-02-07 | 2021-06-11 | 杭州市市政工程集团有限公司 | Reinforcing structure of soil body above existing tunnel and construction method thereof |
| CN113374496A (en) * | 2021-06-23 | 2021-09-10 | 上海隧道工程有限公司 | Upper-crossing tunnel structure and construction method |
| CN114033389A (en) * | 2021-10-28 | 2022-02-11 | 中国建筑土木建设有限公司 | Construction method of mountain city tunnel crossing existing railway |
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