CN206941603U - The cunicular foundation pit supporting construction of foundation pit side-wall - Google Patents
The cunicular foundation pit supporting construction of foundation pit side-wall Download PDFInfo
- Publication number
- CN206941603U CN206941603U CN201720576526.3U CN201720576526U CN206941603U CN 206941603 U CN206941603 U CN 206941603U CN 201720576526 U CN201720576526 U CN 201720576526U CN 206941603 U CN206941603 U CN 206941603U
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- CN
- China
- Prior art keywords
- foundation pit
- prestress anchorage
- anchorage cable
- support pile
- wall
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- 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.)
- Withdrawn - After Issue
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
It the utility model is related to pattern foundation pit supporting structure field, disclose the cunicular foundation pit supporting construction of foundation pit side-wall, including the support pile embedded in the rock-soil layer close to foundation pit side-wall and multiple prestress anchorage cables being respectively arranged above and below tunnel, prestress anchorage cable includes the outer anchor section for being anchored at the Anchoring part of rock-soil layer and freely stretching, the end of outer anchor section connection Anchoring part, the Anchoring part of prestress anchorage cable obliquely arranges that the outer anchor section of prestress anchorage cable is connected with support pile.When carrying out foundation pit supporting project, prestress anchorage cable is respectively arranged with above and below tunnel, so as to be anchored to rock-soil layer above and below tunnel；Support pile is embedded in the rock-soil layer close to foundation pit side-wall, and support pile can bear lateral thrust；Support pile coordinates with tunnel upper and the prestress anchorage cable of lower section plays support action, this support pattern, reduces engineering support cost, while form of construction work is simple and efficient, so as to reduce the duration of engineering.
Description
Technical field
It the utility model is related to foundation pit supporting construction field, the more particularly to cunicular foundation pit supporting construction of foundation pit side-wall.
Background technology
Pattern foundation pit supporting structure is to ensure the safety of Underground Construction and foundation ditch surrounding enviroment, to foundation pit side-wall and surrounding enviroment
Supporting and retaining system, reinforcing and the safeguard measure of use.
At present, pattern foundation pit supporting structure largely adds the supporting scheme of prestress anchorage cable using drilling campshed, when pattern foundation pit supporting structure is met
When having tunnel to foundation pit side-wall, then can not construct prestress anchorage cable, cause design for change scheme of having to.
In the prior art, typically it is changed to drilling campshed and adds inner support scheme, still, inner support scheme cost mistake
Height, and inconvenience of constructing, cause the duration longer.
Utility model content
The purpose of this utility model is to provide foundation pit side-wall cunicular foundation pit supporting construction, it is intended to solves prior art
Middle pattern foundation pit supporting structure runs into tunnel and passed through, and causes the problem of supporting cost is too high, construction is inconvenient, the duration is longer.
The utility model is achieved in that the cunicular foundation pit supporting construction of foundation pit side-wall, including embedded in close to foundation ditch
The support pile of the rock-soil layer of side wall and multiple prestress anchorage cables being respectively arranged above and below tunnel, the prestressing force
Anchor cable includes the outer anchor section for being anchored at the Anchoring part of rock-soil layer and freely stretching, and the outer anchor section connects the end of the Anchoring part
Portion, the Anchoring part of the prestress anchorage cable obliquely arrange that the outer anchor section of the prestress anchorage cable is connected with the support pile.
Further, it is downwardly inclined arrangement along foundation ditch to the bearing of trend of rock-soil layer, the prestress anchorage cable；It is the multiple
Prestress anchorage cable includes high inclination-angle prestress anchorage cable and small inclination prestress anchorage cable, the inclination of the high inclination-angle prestress anchorage cable
Angle is more than the angle of inclination of the small inclination prestress anchorage cable.
Further, the small inclination prestress anchorage cable is arranged in tunnel upper, the high inclination-angle prestress anchorage cable arrangement
Below tunnel.
Further, the outer anchor section passes through the support pile, extends to outside the support pile.
Further, the part that the outer anchor section is extended to outside the support pile is connected with outer anchor head, and the outer anchor head supports
The support pile is connected on towards on the surface of foundation ditch.
Compared with prior art, when carrying out foundation pit supporting project, the present invention is set respectively above and below tunnel
Prestress anchorage cable, by applying prestressing force, tunnel upper and lower section ground are anchored, and prestress anchorage cable is mutual not up and down
Influence its anchoring effect；Support pile is embedded in the rock-soil layer close to foundation pit side-wall, and support pile can bear lateral thrust, support pile and tunnel
Prestress anchorage cable above and below road is combined, and reaches the purpose of pattern foundation pit supporting structure.Combined by prestress anchorage cable with support pile
Support pattern, reduce supporting cost, form of construction work is simple and efficient, so as to reduce the duration of engineering.
Brief description of the drawings
Fig. 1 is the cunicular foundation pit supporting construction schematic front view of foundation pit side-wall that the utility model embodiment provides.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
Same or analogous label corresponds to same or analogous part in the accompanying drawing of the present embodiment；Retouched of the present utility model
In stating, it is to be understood that if it is based on accompanying drawing to have the orientation of the instructions such as term " on ", " under ", "left", "right" or position relationship
Shown orientation or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply institute
The device or element of finger must have specific orientation, with specific azimuth configuration and operation, therefore position is closed described in accompanying drawing
Term the being given for example only property explanation of system, it is impossible to the limitation to this patent is interpreted as, for one of ordinary skill in the art
Speech, the concrete meaning of above-mentioned term can be understood as the case may be.
Realization of the present utility model is described in detail below in conjunction with specific embodiment.
Shown in reference picture 1, preferred embodiment is provided for the utility model.
Foundation pit side-wall has the foundation pit supporting construction in tunnel 20, including support pile 10 and multiple prestress anchorage cables, support pile
10 can bear the safety of lateral thrust, protection path 20 and base pit engineering, and prestress anchorage cable can apply pressure to rock stratum, so as to right
Unstable rock mass is anchored.
Prestress anchorage cable is anchored at the outer anchor section 50 that the Anchoring part 40 of rock-soil layer and the other end freely stretch including one end, branch
Fender pile 10 is embedded in the rock-soil layer close to foundation ditch bottom, can be to carrying out supporting around foundation ditch bottom and foundation ditch bottom, because foundation pit side-wall has tunnel
Road 20, so prestressing force cannot pass through tunnel 20, the safety of tunnel 20 is otherwise influenced whether, so multiple prestress anchorage cables distinguish cloth
It is placed in above and below tunnel 20.
In order to increase the anchoring effect of prestress anchorage cable and scope, prestress anchorage cable Anchoring part 40 inclines along the radial direction of support pile 10
Tiltedly it is anchored at competent bed, the outer extension of anchor section 50 connection support pile 10, can be compared with so on the premise of the safety of tunnel 20 is not influenceed
The anchoring scope of big increase prestress anchorage cable.
In practical work process, support pile 10 is embedded in the rock-soil layer close to foundation pit side-wall, and support pile 10 can bear transverse direction
The safety of thrust, protection path 20 and base pit engineering；Prestress anchorage cable, prestressing force are set respectively above and below tunnel 20
The Anchoring part 40 of anchor cable is anchored at hard rock-soil layer, and outer anchor section 50 is extended from by tensioning to opposite direction, when to prestress anchorage cable
When applying prestressing force, prestress anchorage cable anchors to unstable rock mass above and below tunnel 20, upper and lower prestress anchorage cable
It is combined with support pile 10, so as to there is the foundation ditch in tunnel 20 to carry out supporting to foundation pit side-wall.
In order to strengthen the anchoring effect of prestress anchorage cable, multiple prestress anchorage cables include high inclination-angle prestress anchorage cable 70 and
Small inclination prestress anchorage cable 60, the angle of inclination that high inclination-angle prestress anchorage cable 70 is formed with support pile 10 are more than small inclination prestressing force
Anchor cable 60；Because foundation pit side-wall has tunnel 20, prestress anchorage cable cannot pass through tunnel 20, otherwise can influence tunnel 20 and pacify
Entirely, therefore, small inclination prestress anchorage cable 60 is arranged at the top of tunnel 20, and the Anchoring part 40 of small inclination prestress anchorage cable 60 is anchored at
Hard rock-soil layer, outer anchor section 50 are extended from being connected to support pile 10 by tensioning to opposite direction, and high inclination-angle prestress anchorage cable 70 is set
The lower section of tunnel 20 is placed in, the Anchoring part 40 of high inclination-angle prestress anchorage cable 70 is anchored at hard rock-soil layer, and outer anchor section 50 is freely opened
Drawing is connected to support pile 10, and small inclination prestress anchorage cable 60 cooperates with high inclination-angle prestress anchorage cable 70, makes tunnel 20
Prestress anchorage cable spacing is smaller up and down at position, increases its anchoring effect.
In the present embodiment, support pile 10 is provided with outer anchor head 30, and outer anchor head 30 is connected to the support pile 10 close to foundation ditch bottom
The surface of side, it is more firm that outer anchor head 30 can be such that prestress anchorage cable is connected with support pile 10, and prestressing force will not arbitrarily be offset,
So as to influence the anchoring effect of prestress anchorage cable.
In the present embodiment, the Anchoring part 40 of high inclination-angle prestress anchorage cable 70 is anchored at the rock-soil layer of fastening, high inclination-angle prestressing force
The outer anchor section 50 of anchor cable 70 extends outwardly through support pile 10 and is attached with outer anchor head 30, anchor in small inclination prestress anchorage cable 60
The rock-soil layer that section 40 is anchored at fastening, the outer anchor section 50 of small inclination prestress anchorage cable 60 pass through support pile 10 and with the outer anchor head 30
It is attached, the benefit so set is to make small inclination prestress anchorage cable 60 and high inclination-angle prestress anchorage cable 70 and support pile 10
More consolidating for connection, makes its difficult for drop-off and loosens, increase integrally-built service life, and extend total uses the longevity
Life.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (5)
1. the cunicular foundation pit supporting construction of foundation pit side-wall, it is characterised in that including embedded in the rock-soil layer close to foundation pit side-wall
Support pile and multiple prestress anchorage cables being respectively arranged above and below tunnel, the prestress anchorage cable include being anchored at
The Anchoring part of rock-soil layer and the outer anchor section freely stretched, the outer anchor section connect the end of the Anchoring part, the prestressed anchor
The Anchoring part of rope obliquely arranges that the outer anchor section of the prestress anchorage cable is connected with the support pile.
2. the cunicular foundation pit supporting construction of foundation pit side-wall as claimed in claim 1, it is characterised in that along foundation ditch to rock-soil layer
Bearing of trend, the prestress anchorage cable is downwardly inclined arrangement；The multiple prestress anchorage cable includes high inclination-angle prestress anchorage cable
And small inclination prestress anchorage cable, the angle of inclination of the high inclination-angle prestress anchorage cable are more than the small inclination prestress anchorage cable
Angle of inclination.
3. the cunicular foundation pit supporting construction of foundation pit side-wall as claimed in claim 2, it is characterised in that the small inclination in advance should
Power anchor cable is arranged in tunnel upper, and the high inclination-angle prestress anchorage cable is arranged in below tunnel.
4. the cunicular foundation pit supporting construction of foundation pit side-wall as described in claim 1-3 any one, it is characterised in that described
Outer anchor section passes through the support pile, extends to outside the support pile.
5. the cunicular foundation pit supporting construction of foundation pit side-wall as claimed in claim 4, it is characterised in that the outer anchor section extension
Outer anchor head is connected with to the part outside the support pile, and the outer anchor head is connected to the support pile towards on the surface of foundation ditch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720576526.3U CN206941603U (en) | 2017-05-23 | 2017-05-23 | The cunicular foundation pit supporting construction of foundation pit side-wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720576526.3U CN206941603U (en) | 2017-05-23 | 2017-05-23 | The cunicular foundation pit supporting construction of foundation pit side-wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206941603U true CN206941603U (en) | 2018-01-30 |
Family
ID=61361013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720576526.3U Withdrawn - After Issue CN206941603U (en) | 2017-05-23 | 2017-05-23 | The cunicular foundation pit supporting construction of foundation pit side-wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206941603U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968258A (en) * | 2017-05-23 | 2017-07-21 | 深圳宏业基岩土科技股份有限公司 | The cunicular foundation pit supporting construction of foundation pit side-wall |
-
2017
- 2017-05-23 CN CN201720576526.3U patent/CN206941603U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968258A (en) * | 2017-05-23 | 2017-07-21 | 深圳宏业基岩土科技股份有限公司 | The cunicular foundation pit supporting construction of foundation pit side-wall |
| CN106968258B (en) * | 2017-05-23 | 2020-04-28 | 深圳宏业基岩土科技股份有限公司 | Foundation pit supporting structure with tunnel on side wall of foundation pit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180130 Effective date of abandoning: 20200428 |