CN202187345U - Gravity anchor structure in karst area - Google Patents
Gravity anchor structure in karst area Download PDFInfo
- Publication number
- CN202187345U CN202187345U CN2011202757605U CN201120275760U CN202187345U CN 202187345 U CN202187345 U CN 202187345U CN 2011202757605 U CN2011202757605 U CN 2011202757605U CN 201120275760 U CN201120275760 U CN 201120275760U CN 202187345 U CN202187345 U CN 202187345U
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- foundation
- anchor
- anchorage
- gravity
- karst area
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Abstract
The gravity type anchorage structure in the karst area can effectively solve the problem of insufficient bearing capacity of the foundation and can reduce the construction difficulty of the anchorage. The anchor foundation structure comprises an anchor main body (10) and an anchor foundation (11) which are integrally solidified, wherein a shear-resistant tooth block (12) embedded below a rock face is arranged in a complete foundation rock face area (20) below the anchor foundation (11), a toothed strip foundation (13) is arranged in an erosion area (30), a pile group foundation (14) is arranged in a severe erosion area (40), the shear-resistant tooth block (12) and the anchor foundation (11) are integrally solidified, and the anchor foundation (11) is supported on the toothed strip foundation (13) and the pile group foundation (14).
Description
Technical field
The utility model relates to bridge engineering, particularly a kind of gravity anchor structure that is used for karst area.
Background technology
Anchorage is the important structure ingredient of suspension bridge, and the primary structure form is divided into tunnel-type anchorage, gravity anchor and combined type anchorage, and wherein gravity anchor is to adopt maximum anchorage forms.Since the gravity anchor bulky, and bear huge horizontal loading, therefore require its below ground to have higher vertical bearing capacity and bigger horizontal friction factor.For karst area, rock strength height but distribution solution cavity, and mostly solution cavity be the cavity or fill clay, can not satisfy the requirement for bearing capacity of anchorage.On the other hand, because the existence of solution cavity, underground water is often very abundant, brings bigger influence for anchorage construction and durability.The utility model patent is intended to propose a kind of gravity anchor that is used for karst area, solves the problem that bearing capacity of foundation soil deficiency and rich groundwater are brought to anchorage.
The utility model content
The utility model technical problem to be solved provides a kind of karst area gravity anchor structure, can solve the not enough problem of bearing capacity of foundation soil effectively, and can reduce the difficulty of construction of anchorage.
It is following that the utility model solves the technical scheme that its technical problem adopted:
The karst area gravity anchor structure of the utility model; Comprise fixed anchorage main body, the Anchor Foundation of one that be, it is characterized in that: below the said Anchor Foundation, the shearing resistance tooth piece that embeds below the scar is set in complete bedrock surface zone; In the corrosion zone dentation strip foundation is set; In severe corrosion zone multi-column pier foundation is set, shearing resistance tooth piece and Anchor Foundation are fixed to be one, and Anchor Foundation is supported on dentation strip foundation, the multi-column pier foundation.
The beneficial effect of the utility model is, solved required vertical force and the horizontal force of anchorage through simple construction measure, and reduced difficulty of construction through rational structure, guaranteed the waterproof effect and the durability of structure.
Description of drawings
This manual comprises following three width of cloth accompanying drawings:
Fig. 1 is an anchorage bottom surface foundation region piecemeal sketch map;
Fig. 2 is the facade structures sketch map of the utility model karst area gravity anchor structure;
Fig. 3 is the bottom surface structure construction figure of the utility model karst area gravity anchor structure.
Member shown in the figure, toponym and pairing mark: anchorage main body 10, anchor body 10a, preceding anchor chamber 10b, the noose 10c that looses, Anchor Foundation 11, shearing resistance tooth piece 12, dentation strip foundation 13, multi-column pier foundation 14, complete bedrock surface zone 20, corrosion zone 30, severe corrosion zone 40, main push-towing rope 50.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
With reference to Fig. 1, the anchorage of karst area below ground according to circumstances can be divided into following three types of zones: complete bedrock surface zone 20, and scar is higher than the Anchor Foundation end face, and this zone anchorage is the higher basement rock of contact strength directly; Corrosion zone 30, scar is not dark, scar apart from Anchor Foundation in 3m; Severe corrosion zone 40, bedrock surface apart from the Anchor Foundation bottom surface greater than 3m, depths even tens of rice.
With reference to Fig. 2; Complete bedrock surface zone 20 intensity are higher; Said Anchor Foundation is provided with the shearing resistance tooth piece 12 that embeds below the scar below 11; Shearing resistance tooth piece 12 is fixed with Anchor Foundation 11 monobloc casts to be one, through shearing resistance tooth piece 12 and the huge horizontal loading of Anchor Foundation 11 substrate frictional force opposing anchorage.With reference to Fig. 3, shearing resistance tooth piece 12 is laid to the interval along suitable bridge, and extends along direction across bridge.With reference to Fig. 2, the cross section of shearing resistance tooth piece 12 is trapezoidal, highly is generally 1～1.5m.With reference to Fig. 2, corrosion zone 30 is provided with dentation strip foundation 13 in Anchor Foundation below 11, and dentation strip foundation 13 is constructed respectively with Anchor Foundation 11, does not connect, and the vertical support to anchorage mainly is provided.With reference to Fig. 3, dentation strip foundation 13 is laid along direction across bridge at interval, and along along bridge to extension, its position is corresponding with 11 solid sections of top Anchor Foundation.With reference to Fig. 2, severe corrosion zone 40 is provided with multi-column pier foundation 14 in Anchor Foundation below 11, and foundation pile adopts drilled pile usually, and the stake top is not connected with Anchor Foundation 11, and the vertical support to anchorage mainly is provided.
With reference to Fig. 3, for making things convenient for excavation supporting and sealing, said Anchor Foundation 11 adopts circular.With reference to Fig. 2, said anchorage main body 10 is made up of anchor body 10a, preceding anchor chamber 10b, and anchor chamber, back is not set, and receives groundwater erosion with the prestressed strand in the protection anchor body.Fixedly install the noose 10c that looses at preceding anchor chamber 10b, main push-towing rope 50 is through the noose 10c that looses, and do not adopt traditional diffusing cable saddle form, and main push-towing rope 50 does not turn to downwards, so the absolute altitude of anchorage substrate is improved, and reduces foundation excavation amount and excavation difficulty.On the other hand, anchorage main body 10, Anchor Foundation 11 all adopt impervious concrete, to improve durability of structures.
Some principles of the above the utility model karst area gravity anchor structure that just explains through diagrams; Be not be to the utility model be confined to shown in described concrete structure and the scope of application in; So every the modify and equivalent that might be utilized all belongs to the claim that the utility model is applied for.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202757605U CN202187345U (en) | 2011-07-30 | 2011-07-30 | Gravity anchor structure in karst area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202757605U CN202187345U (en) | 2011-07-30 | 2011-07-30 | Gravity anchor structure in karst area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202187345U true CN202187345U (en) | 2012-04-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202757605U Expired - Fee Related CN202187345U (en) | 2011-07-30 | 2011-07-30 | Gravity anchor structure in karst area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202187345U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704397A (en) * | 2012-06-28 | 2012-10-03 | 中铁十三局集团第一工程有限公司 | Light anchorage structure |
| CN108049313A (en) * | 2017-12-12 | 2018-05-18 | 中交公局第二工程有限公司 | A kind of anchor body construction method |
| CN109930485A (en) * | 2019-01-21 | 2019-06-25 | 中交公路长大桥建设国家工程研究中心有限公司 | A kind of design method on ground-connecting-wall gravity type Compound Anchorage basis |
| CN110629671A (en) * | 2019-10-31 | 2019-12-31 | 中铁大桥勘测设计院集团有限公司 | A suspension bridge anchorage and its construction method |
| CN111705659A (en) * | 2020-06-12 | 2020-09-25 | 中铁大桥勘测设计院集团有限公司 | A horizontal embedded anchorage foundation |
| CN111794102A (en) * | 2020-07-17 | 2020-10-20 | 中铁大桥勘测设计院集团有限公司 | Sheet pile type anchorage structure and construction method thereof |
-
2011
- 2011-07-30 CN CN2011202757605U patent/CN202187345U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704397A (en) * | 2012-06-28 | 2012-10-03 | 中铁十三局集团第一工程有限公司 | Light anchorage structure |
| CN108049313A (en) * | 2017-12-12 | 2018-05-18 | 中交公局第二工程有限公司 | A kind of anchor body construction method |
| CN109930485A (en) * | 2019-01-21 | 2019-06-25 | 中交公路长大桥建设国家工程研究中心有限公司 | A kind of design method on ground-connecting-wall gravity type Compound Anchorage basis |
| CN110629671A (en) * | 2019-10-31 | 2019-12-31 | 中铁大桥勘测设计院集团有限公司 | A suspension bridge anchorage and its construction method |
| CN111705659A (en) * | 2020-06-12 | 2020-09-25 | 中铁大桥勘测设计院集团有限公司 | A horizontal embedded anchorage foundation |
| CN111794102A (en) * | 2020-07-17 | 2020-10-20 | 中铁大桥勘测设计院集团有限公司 | Sheet pile type anchorage structure and construction method thereof |
| CN111794102B (en) * | 2020-07-17 | 2021-08-10 | 中铁大桥勘测设计院集团有限公司 | Sheet pile type anchorage structure and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120411 Termination date: 20120730 |