CN209144808U - Prestressed anchor cable stress protection device under fill condition - Google Patents
Prestressed anchor cable stress protection device under fill condition Download PDFInfo
- Publication number
- CN209144808U CN209144808U CN201821505696.3U CN201821505696U CN209144808U CN 209144808 U CN209144808 U CN 209144808U CN 201821505696 U CN201821505696 U CN 201821505696U CN 209144808 U CN209144808 U CN 209144808U
- Authority
- CN
- China
- Prior art keywords
- anchorage cable
- steel bushing
- prestress anchorage
- steel
- device under
- 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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- Piles And Underground Anchors (AREA)
Abstract
The utility model provides a prestressed anchorage cable atress protection device under fill condition. The device comprises a steel pipe and a steel column assembly. The stranded steel strands are arranged in the steel sleeve along the axis direction and attached to the inner surface of the lower portion of the steel sleeve. The steel column is embedded and fixed in the bedrock and used for supporting the steel sleeve, preventing the middle section of the steel sleeve from generating excessive deformation and simultaneously preventing the steel sleeve from settling along with the filled soil. The utility model discloses protection device can rationally effectively protect prestressed anchorage cable free section, reserves steel sleeve settlement space, avoids steel sleeve and prestressed anchorage cable contact to make prestressed anchorage cable free section not receive horizontal shearing force, can let prestressed anchorage cable normal work under the fill condition, guarantee engineering safety and stability, have simple structure and the good characteristics of economic effect.
Description
Technical field
The utility model relates to construction field, in particular to a kind of prestress anchorage cable protective device.
Background technique
Prestress anchorage cable is the firm Rock And Soil that takes a proactive approach, by drilling through soft stratum or sliding surface, one
End is anchored in hard rock stratum and (claims Inner bolt head), then tensioning is carried out in another free end (claiming outer anchor head), thus to rock
Layer applies pressure and anchors to unstable rock mass.
Currently, prestress anchorage cable usually applies to finally carry out pre- in excavation and cart-away, directly drilling prestressed anchor cable
Tensioning.But in some architectural environment side slopes, supporting is usually carried out in such a way that pile plate wall is combined with prestress anchorage cable and is set
Meter usually exists to meet design ground elevation and needs the case where backfilling, at this time the exposure of prestress anchorage cable free segment a part
In embankment region, if untreated, compacting process and natural subsidence after banketing can generate Transverse Shear to prestress anchorage cable
Shear force influences the stress of prestress anchorage cable, makes its cisco unity malfunction, be easy to cause engineering harm.
The stressing influence to be banketed in order to prevent to prestress anchorage cable, prestress anchorage cable free segment banket region setting coagulation
Soil protection pier, by prestress anchorage cable and completely isolated, the guarantee normal stress of prestress anchorage cable of banketing.But the technical costs compared with
Height, the construction time is long, especially encounter basement rock position (protection pier pier bottom) apart from prestress anchorage cable farther out when, concrete protective pier
The scale of construction is very big, increases unnecessary project amount and cost.
Utility model content
It is existing to solve the purpose of the utility model is to provide prestress anchorage cable force-bearing protecting device under the conditions of a kind of embankment
The problem of technology.
To realize the utility model aim and the technical solution adopted is that such, prestress anchorage cable under the conditions of a kind of embankment
Force-bearing protecting device, including the steel bushing and several support columns being set on the outside of prestress anchorage cable.
The prestress anchorage cable includes the anchoring section, free segment and tensioning section being made of several steel strand wires.The anchoring section
It is mounted in stable basement rock.The tensioning section is anchored on breast boards.The free segment is embedded in fill stratum.The steel bushing
Free segment and fill stratum are completely cut off.
The support column is arranged in below steel bushing.The support column is uniformly laid along the length direction of steel bushing.It is described
The lower end of support column is mounted in stable basement rock, and upper end is fixedly connected by connecting elements with steel bushing.
Further, the diameter of the free segment is d.The internal diameter of the steel bushing is D.Wherein, d=2/3D.The freedom
Section is located at the lower part of steel bushing tube inner chamber.
Further, the section of the support column is circle.The support column diameter is l.Between adjacent two support columns
Spacing is 12~15l.
Further, the connecting elements generally blocks.The upper surface of the connecting elements is fixedly connected with steel bushing,
Lower surface is fixedly connected with the upper surface of support column.
Further, depth is not less than 500mm in the stable basement rock of steel bushing insertion.
Having the technical effect that for the utility model is unquestionable:
1. guaranteeing that prestress anchorage cable free segment not by cross shear, can be played normally under embankment engineering specifications
Prestressing force effect generates fastening effect to the soil body；
2. easy for construction simple, the duration is shortened, and project cost reduces.
Detailed description of the invention
Fig. 1 is apparatus structure schematic diagram；
Fig. 2 is device cross-sectional view；
Fig. 3 is device side view；
Fig. 4 is connecting elements schematic diagram.
In figure: prestress anchorage cable 1, free segment 102, tensioning section 103, stablizes basement rock 2, breast boards 3, bankets anchoring section 101
Layer 4, steel bushing 5, support column 6, connecting elements 7.
Specific embodiment
Below with reference to embodiment, the utility model is described in further detail, but should not be construed the above-mentioned master of the utility model
Topic range is only limitted to following embodiments.It is common according to this field in the case where not departing from the above-mentioned technical idea of the utility model
Technological know-how and customary means make various replacements and change, should all include within the protection scope of the present utility model.
Embodiment 1:
Referring to Fig. 1, the present embodiment discloses prestress anchorage cable force-bearing protecting device under the conditions of a kind of embankment, including is set in pre-
The steel bushing 5 and support column 6 in 1 outside of stress anchor cable.
The prestress anchorage cable 1 includes anchoring section 101, free segment 102 and tensioning section 103.The prestress anchorage cable 1 tilts
Arrangement.The anchoring section 101 is mounted in stable basement rock 2.The tensioning section 103 is anchored on breast boards 3.The free segment
102 are embedded in fill stratum 4.The steel bushing 5 completely cuts off free segment 102 and fill stratum 4, guarantee prestress anchorage cable 1 not by
Cross force makes full use of the vertical stretch capability of prestress anchorage cable 1, applies prestressing force and consolidates the soil body.The insertion of steel bushing 5 is stablized
Depth is not less than 500mm in basement rock 2.
Referring to Fig. 3, the support column 6 is arranged in 5 lower section of steel bushing.The support column 6 is equal along the length direction of steel bushing 5
Cloth is laid.The lower end of the support column 6 is mounted in stable basement rock 2, and upper end is fixedly connected by connecting elements 7 with steel bushing 5.
Support column 6 prevents steel bushing 5 from generating large deformation in earth filling tamping and natural subsidence, while reducing the settling amount of steel bushing 5, keeps away
Exempt from tube wall contact prestress anchorage cable and cross force is generated to it, influences its stress performance.The section of the support column 6 is circle.
6 diameter of support column is l.Spacing between adjacent two support columns 6 is 12~15l.
Referring to fig. 2, the diameter of the free segment 102 is d.The internal diameter of the steel bushing 5 is D.Wherein, d=2/3D.It is described
The lower inner wall of the abutting steel bushing 5 of free segment 102.5 inner cavity top of steel bushing reserves settlement space.
Referring to fig. 4, the connecting elements 7 generally blocks.The upper surface of the connecting elements 7 and steel bushing 5 are fixed
Connection, lower surface is fixedly connected with the upper surface of support column 6.
The support column 6 is used to support steel bushing 5, prevents 5 interlude of steel bushing from generating excessive deformation, while preventing steel bushing
Cylinder 5 follows to banket to be settled together.The present embodiment being capable of reasonable effective protection free segment 102.Steel bushing settlement space is reserved, is made
Free segment 102 by cross shear, can not allow prestress anchorage cable 1 to work normally under the conditions of embankment, guarantee that engineering safety is steady
It is fixed, have the characteristics that the simple and economical effect of structure is good.
Claims (5)
1. prestress anchorage cable force-bearing protecting device under the conditions of a kind of embankment, it is characterised in that: including being set in prestress anchorage cable (1)
The steel bushing (5) in outside and several support columns (6)；
The prestress anchorage cable (1) includes anchoring section (101), free segment (102) and tensioning section (103)；Steel bushing (5) set
On the outside of free segment (102)；The prestress anchorage cable (1) is in tilted layout；The anchoring section (101) is mounted in stable basement rock
(2) in；The tensioning section (103) is anchored on the inside of breast boards (3)；The free segment (102) is embedded in fill stratum (4)；Institute
Steel bushing (5) is stated to completely cut off free segment (102) and fill stratum (4)；
The support column (6) is arranged in below steel bushing (5)；The support column (6) is evenly distributed with cloth along the length direction of steel bushing (5)
If；The lower end of the support column (6) is mounted in stable basement rock (2), and upper end is fixed by connecting elements (7) and steel bushing (5)
Connection.
2. prestress anchorage cable force-bearing protecting device under the conditions of a kind of embankment according to claim 1, it is characterised in that: described
The diameter of free segment (102) is d；The internal diameter of the steel bushing (5) is D；Wherein, d=2/3D；The free segment (102) is located at
The lower part of steel bushing (5) inner cavity.
3. prestress anchorage cable force-bearing protecting device under the conditions of a kind of embankment according to claim 1, it is characterised in that: described
The section of support column (6) is circle；Support column (6) diameter is l；Spacing between adjacent two support columns (6) is 12~
15l。
4. prestress anchorage cable force-bearing protecting device under the conditions of a kind of embankment according to claim 1, it is characterised in that: described
Connecting elements (7) generally blocks；The upper surface of the connecting elements (7) is fixedly connected with steel bushing (5), lower surface and branch
The upper surface of dagger (6) is fixedly connected.
5. prestress anchorage cable force-bearing protecting device under the conditions of a kind of embankment according to claim 1, it is characterised in that: described
Steel bushing (5) is embedded in depth in stable basement rock (2) and is not less than 500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821505696.3U CN209144808U (en) | 2018-09-14 | 2018-09-14 | Prestressed anchor cable stress protection device under fill condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821505696.3U CN209144808U (en) | 2018-09-14 | 2018-09-14 | Prestressed anchor cable stress protection device under fill condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209144808U true CN209144808U (en) | 2019-07-23 |
Family
ID=67265410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821505696.3U Expired - Fee Related CN209144808U (en) | 2018-09-14 | 2018-09-14 | Prestressed anchor cable stress protection device under fill condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209144808U (en) |
-
2018
- 2018-09-14 CN CN201821505696.3U patent/CN209144808U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190723 Termination date: 20210914 |