CN206418506U - A kind of foundation pit supporting construction - Google Patents
A kind of foundation pit supporting construction Download PDFInfo
- Publication number
- CN206418506U CN206418506U CN201720025498.6U CN201720025498U CN206418506U CN 206418506 U CN206418506 U CN 206418506U CN 201720025498 U CN201720025498 U CN 201720025498U CN 206418506 U CN206418506 U CN 206418506U
- Authority
- CN
- China
- Prior art keywords
- pin
- wall
- bar
- anchor cable
- foundation pit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A kind of foundation pit supporting construction, it includes hanging pin wall, prestressing force lock pin anchor cable and bar-mat reinforcement, poured into a mould by armored concrete hung described in two formed pin wall wall bottom be vertically embedded into below micro- decomposed rock of foundation ditch be more than 1 meter, the pin coping that hangs sets up Guan Liang, and the concrete beam being erected in the Guan Liang connects two and hangs pin wall；Pin wall is hung described in two higher than the anchor cable waist rail that 20 degree diagonally downward are respectively equipped with 0.5 meter of wall bottom, prestressing force lock pin anchor cable one end is located at the anchor cable waist rail and the junction for hanging pin wall, and other end stretch-draw anchor is in micro- decomposed rock；Bar-mat reinforcement is laid on the gentle breeze rock of pin within the walls in described hang, the bar-mat reinforcement is provided with gunite concrete surface layer on multiple soil nailings, and the bar-mat reinforcement.
Description
Technical field
The utility model be related to underground subway station design and construction technical field, be especially adapted for use in micro- weathered rock it is shallow,
A kind of foundation pit supporting construction under the high special geologic condition of rock strength.
Background technology
With social development and progress, the acceleration of urbanization, the continuous expansion of urban area, urban population expands rapidly,
Height plus crowd is assembled inhabitation and handled official business, and soil is used as a kind of aobvious anxiety of non-renewable resource day, traffic above-ground congestion
Problem is increasingly fierce, the exploitation of Underground Rail Transit and the effective development direction for turning city alleviation traffic above-ground pressure into.
Particularly in the routine work and life of provincial capital of China and a line super-large city, Underground Rail Transit plays Economization on land
Resource, reduces traffic above-ground pressure, shortens the time that residence is needed with office space of being to and from.The development of Underground Rail Transit is built
If not only efficiently solving above-mentioned contradiction, and the discharge capacity of vehicle exhaust is reduced, Urban population is improved indirectly
Live and work quality.
Subway station is essential part in Underground Rail Transit, realizes crowd in underground and ground
Produce into.Subway station is typically embedded in below ground, and construction has cut and cover method, cap excavation method, shallow burial hidden digging, shield method and this is several
The combination of the method for kind and version.Cut and cover method is the more commonly used one kind, in open-cut station firstly the need of design and construction
Foundation pit supporting construction.Prior art is typically using diaphragm wall or the supporting construction of bored concrete pile and inner support.But for gentle breeze rock
Layer shallower, rock strength it is higher when, using above-mentioned support form there are problems that difficulty of construction it is big, long in time limit,.
The content of the invention
The purpose of this utility model is to overcome drawbacks described above, is reducing engineering time and difficulty and reducing cost simultaneously
Improve the security performance of supporting construction.Foundation pit supporting construction of the present utility model is more easy to construction, economic benefit and become apparent from, and energy
Effectively shorten the construction period.Supporting construction greatly reduces broken rock amount, and use prestressing force by refining analysis and field monitoring
Anchor cable lock pin reduces foundation pit deformation, lifts the security of supporting construction.
The purpose of this utility model is to be achieved by the following technical programs.
A kind of foundation pit supporting construction, it includes hanging pin wall, prestressing force lock pin anchor cable and bar-mat reinforcement, wherein,
Poured into a mould as armored concrete and the wall bottom of pin wall is hung described in two formed be vertically embedded into below micro- decomposed rock of foundation ditch
More than 1 meter, the pin coping that hangs sets up Guan Liang, and pin wall is hung in the concrete beam connection being erected in the Guan Liang.
Hung described in two pin wall higher than the anchor cable waist rail that 20 degree diagonally downward are respectively equipped with 0.5 meter of wall bottom, prestressing force
Lock pin anchor cable one end is located at the anchor cable waist rail and the junction for hanging pin wall, and other end stretch-draw anchor is in micro- decomposed rock.
Bar-mat reinforcement is laid on the gentle breeze rock of pin within the walls in described hang, the bar-mat reinforcement is provided with multiple soil nailings, and the steel
The online gunite concrete surface layer of muscle.
The utility model is exclusively used in that gentle breeze rock stratum is shallower, rock strength is higher, rock is more completely special there is provided one kind
Foundation pit supporting construction under geological conditions, hangs pin wall and is put outside no less than 1.2 meters from agent structure outside, it is therefore an objective to met outside wall bottom
There are 1.2 meters of rocks side as the construction measure for preventing foundation from being moved into foundation ditch.The Guan Liang on wall top and the reinforcing bar being attached thereto are mixed
Solidifying soil support is to ensure that the deformation at the top of foundation ditch meets construction and code requirement.The prestressing force lock pin anchor cable and anchor cable waist rail are
For the fixed effect for hanging pin wall bottom.
The utility model is realized micro- weathered rock is shallower, rock strength is higher, the more complete special geology bar of rock
Metro station excavation supporting under part, broken rock amount when reducing traditional foundation pit supporting construction construction, when reducing construction
Difficulty, the cost for reducing pattern foundation pit supporting structure, the duration of pattern foundation pit supporting structure is shortened, while also ensure that in main structure construction
Excavation of foundation pit security reliability.Reach that the safe, economic, efficient etc. of under special geologic condition underground station engineering construction will
Summation purpose.
The utility model can use measure further below：Using the lock pin anchor cable system of recoverable, protection is reached
Environment, the purpose further economized on resources.
It is highly consistent for station both sides scar, it can be arranged along the bigger region of mileage direction scope using above-mentioned optimization
Apply.
Further, the thickness of pin wall is hung at least above 0.5 meter.
Further, supporting surface of the Guan Liang provided with support concrete beam.
Preferably, two prestressing force lock pin anchor cables are symmetrical set, and the soil nailing tilts down 15 degree of insertion institutes
State in micro- decomposed rock.
It is highly preferred that hanging setting soil nailing+gunite concrete surface layer on the gentle breeze rock of pin within the walls described.
The utility model has the advantages that.
This supporting construction implements simple, workable, and reliability is high.Hanging pin supporting construction, need not to abolish wall bottom largely high
Intensity rock, takes the measure such as wall top inner support and lock pin anchor cable ensure that and hangs the safe and reliable of pin wall.
Cost saving, hangs hanging pin wall and need to only be embedded in below gentle breeze scar 1 meter in pin wall supporting construction, without extending
The following build-in in foundation ditch bottom, reduces the grooving of diaphragm wall, has shortened the length of diaphragm wall, so as to save construction costs.
Shorten the duration, because gentle breeze rock intensity it is higher when, can not using general grooving machinery such as more than 50MPa
Construction, even if using Double-wheel milling equipment, one day broken rock amount only 0.3m or so, and greatly reduce broken rock using pin wall section is hung
Amount, so as to reach the purpose for shortening the duration.
Brief description of the drawings
Fig. 1 is foundation pit supporting construction schematic diagram of the present utility model.
Embodiment
Fig. 1 is foundation pit supporting construction schematic diagram of the present utility model.Referring to Fig. 1, a kind of foundation pit supporting construction, it includes hanging
Pin wall 1, prestressing force lock pin anchor cable 4 and bar-mat reinforcement 7.
Poured into a mould as armored concrete and the wall bottom of pin wall 1 is hung described in two formed be vertically embedded into below micro- decomposed rock of foundation ditch
At 1 meter, the top for hanging pin wall 1 sets up Guan Liang 2, and the concrete beam 3 being erected in the Guan Liang 2 connects two and hung
Pin wall 1.
Pin wall 1 is hung described in two higher than the anchor cable waist rail 5 that 20 degree diagonally downward are respectively equipped with 0.5 meter of wall bottom, prestressing force
The one end of lock pin anchor cable 4 is located at the anchor cable waist rail 5 and the junction for hanging pin wall 1, and other end stretch-draw anchor is in micro- decomposed rock
In.
Bar-mat reinforcement 7 is laid on the gentle breeze rock hung in pin wall 1, the bar-mat reinforcement is provided with multiple soil nailings 8, and described
Gunite concrete surface layer 6 is sprayed on bar-mat reinforcement 7.
The utility model is exclusively used in that gentle breeze scar is shallower, and rock strength is higher, the supporting construction of the more complete foundation ditch of rock,
Hang pin wall concrete strength to reach after design requirement below excavation of foundation pit to Guan Liang face at 0.5m, the reinforcement placing coagulation at Guan Liang
Native crossbeam, then sets anchor cable waist rail, drilling construction prestress anchorage cable and tensioning anchor after anchor cable waist rail reaches concrete strength
Gu.At the absolute altitude of foundation ditch bottom, bar-mat reinforcement is configured to both sides gentle breeze scar and drill setting soil nailing and injection facing concrete
Protection.
The utility model realizes that gentle breeze scar is shallower, and rock strength is higher, pattern foundation pit supporting structure when rock is more complete, shortens
The foundation pit construction duration, the investment of pattern foundation pit supporting structure is reduced, and safely and reliably ensure the safety during whole station construction.
According to one embodiment of the present utility model, the thickness of pin wall 1 is hung at least above 0.5 meter.
According to another embodiment of the present utility model, supporting surface of the Guan Liang 2 provided with support concrete beam.
According to one embodiment of the present utility model, two prestressing force lock pin anchor cables 4 are symmetrical set.
According to another embodiment of the present utility model, the soil nailing 8 is tilted down in 15 degree of insertion micro- decomposed rocks.
Although embodiment of the present utility model is described above in association with accompanying drawing, the utility model does not limit to
In above-mentioned specific embodiments and applications field, above-mentioned specific embodiment be only it is schematical, guiding, without
It is restricted.One of ordinary skill in the art is under the enlightenment of this specification and is not departing from the utility model claim
In the case of the scope protected, the form of many kinds can also be made, these belong to the row of the utility model protection.
Claims (5)
1. a kind of foundation pit supporting construction, it includes hanging pin wall, prestressing force lock pin anchor cable and bar-mat reinforcement, wherein,
Poured into a mould as armored concrete hung described in two formed pin wall wall bottom be vertically embedded into below micro- decomposed rock of foundation ditch be more than 1
At rice, the pin coping that hangs sets up Guan Liang, and the concrete beam being erected in the Guan Liang connects two and hangs pin wall；
Pin wall is hung described in two higher than the anchor cable waist rail that 20 degree diagonally downward are respectively equipped with 0.5 meter of wall bottom, prestressing force lock pin anchor
Suo Yiduan is located at the anchor cable waist rail and the junction for hanging pin wall, and other end stretch-draw anchor is in micro- decomposed rock；
Bar-mat reinforcement is laid on the gentle breeze rock of pin within the walls in described hang, the bar-mat reinforcement is provided with multiple soil nailings, and the bar-mat reinforcement
Upper gunite concrete.
2. foundation pit supporting construction according to claim 1, it is characterised in that：The thickness of pin wall is hung at least above 0.5 meter.
3. foundation pit supporting construction according to claim 1, it is characterised in that：The Guan Liang is provided with support concrete beam
Supporting surface.
4. foundation pit supporting construction according to claim 1, it is characterised in that：Two prestressing force lock pin anchor cable or so pair
Claim to set.
5. foundation pit supporting construction according to claim 1, it is characterised in that：It is described that the soil nailing tilts down 15 degree of insertions
In micro- decomposed rock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720025498.6U CN206418506U (en) | 2017-01-10 | 2017-01-10 | A kind of foundation pit supporting construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720025498.6U CN206418506U (en) | 2017-01-10 | 2017-01-10 | A kind of foundation pit supporting construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206418506U true CN206418506U (en) | 2017-08-18 |
Family
ID=59574971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720025498.6U Expired - Fee Related CN206418506U (en) | 2017-01-10 | 2017-01-10 | A kind of foundation pit supporting construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206418506U (en) |
-
2017
- 2017-01-10 CN CN201720025498.6U patent/CN206418506U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170818 Termination date: 20200110 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |