CN1415805A - Ship anchor type anchor head of ground anchor in grouting stretch model - Google Patents
Ship anchor type anchor head of ground anchor in grouting stretch model Download PDFInfo
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- CN1415805A CN1415805A CN 02151286 CN02151286A CN1415805A CN 1415805 A CN1415805 A CN 1415805A CN 02151286 CN02151286 CN 02151286 CN 02151286 A CN02151286 A CN 02151286A CN 1415805 A CN1415805 A CN 1415805A
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Abstract
This invention includes: thin wall steel tube, fluke top seat, piston propeller, bar and fluke in which the fluke top seat is fixedly connected with the thin wall steel tube, both ends of the bar are connected to its base seat of the piston probeller and fluke separately by flexible pins, the anchor head is linked to the fluke top seat by pins and middle of the fluke is linked with the bar, and connection holes connect the anchor chain at the back of the anchor head. Using the character of large fixed area and powerful force of fluke, this invention provides pulling resistance like anchor, in operation the back of anchor head is connected with the chain then put in anchor eyes to grout with high pressure from thin-wall steel tube to force the fluke open into the anchor eye wall to provide anchor force.
Description
Technical field
What the present invention relates to is a kind of anchor head of native anchor, and particularly a kind of ship anchor type slip casting opening mode soil anchor anchor head belongs to soil body anchoring field.
Background technology
The ground anchorage technology can fully be excavated the ground self-energy, calls self intensity and self-supporting ability, guarantees construction safety and Stability Analysis of Structures, saves engineering material, thereby obtains distinct economic.Anchorage style is commonly referred to as grouted rock bolt based on well cementing in the natural soil layer, also has forms such as soil nailing wall is solid in addition.The grouting soil bolt is made up of anchor pole (anchor cable), free section, anchoring section and anchor head, cushion block etc.Anchoring section and anchor head are the suppliers of uplift resistance, and how its performance is related to the effect performance degree of anchor pole.Soil anchor anchoring section pattern commonly used has column type (generally to be used for provisional soil-baffling structure, pulling force is not high), enlarged end type sand soil, the hard viscosity layer of bearing capacity (generally be used for have relatively high expectations), ball-type (anchor pole that generally is used for the silt soil strata and the bearing capacity of having relatively high expectations) continuously.
Adopting termination expansion type soil anchor is a kind of main method that strengthens native anchor anchoring ability.Termination expansion type soil anchor adopts modes such as machinery, explosion, water jet that anchor hole is carried out reaming.Thereby its cardinal principle is the contact area that increases anchoring body and soil layer on the one hand and improves bonding force or frictional resistance, main is to locally expanded by native anchor anchoring body, make the soil body enlarge position generation support resistance, change the presentation mode of anchored force, improve the anchored force of native anchor.The anchoring section architectural feature of the termination expansion type soil anchor that uses at present is relevant with its form of construction work and principle.Find by literature search, people such as Xia Bairu are in " geology and exploration ", in May, 1997, the 33rd the 3rd phase of volume, the 53-55 page or leaf is write articles " termination expansion type soil bolt technology ", this article is to principle, the structure of domestic and international termination expansion type soil bolt and should be used as detailed argumentation, its main notable feature is: after the end slip casting that reaming forms with patchhole in the dowel bonding form anchor head shape structure, anchored force is provided.But the anchored end structure of these methods and formation has its weak point: need application specific reaming equipment or material, and the construction technology complexity, the large volume reaming is very difficult, and providing of anchored force is limited.In addition, there is research to adopt the form of structure that on anchor pole, adds umbrella frame shape reaction plate, applies reversal interlocking relay, umbrella frame shape reaction plate is opened anchored force is provided with hollow reciprocating type jack.But the degree of depth that umbrella frame embeds in the soil is limited, and the pulling capacity that provides is difficult to improve very big (especially in softer soil layer), and this method needs with the propelling of repeatedly jack and apply reversal interlocking relay also to bring restriction for construction application.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of ship anchor type slip casting opening mode soil anchor anchor head is provided, make its uplift resistance that increases substantially soil bolt (especially than in the weak soil layer) anchoring section, and easy construction.The present invention is achieved by the following technical solutions, the present invention adopts expansible type anchor head structure, mainly comprise: thin-wall steel tube, anchor are grabbed footstock, piston pushing body, strut and anchor and are grabbed, its connected mode is: anchor is grabbed footstock and is fixedlyed connected with thin-wall steel tube, four strut two are grabbed by strut base and anchor that movable pin connects the piston pushing body respectively, the head that anchor is grabbed is grabbed footstock by movable pin and anchor and is connected, and the middle part that anchor is grabbed is connected with strut by movable pin.The anchor head rear portion is provided with connecting hole and links to each other with anchor cable, after anchor head opens anchored force is provided, can apply prestressing force under the situation of needs.
The thin-wall steel tube afterbody is provided with the slip casing by pressure hole, and can be connected with anchor cable, leaves four preformed holes on thin-wall steel tube top, grabs for anchor and opens the usefulness that the back slurry that puts in place enters anchor hole.Anchor is grabbed footstock and is fixedlyed connected with thin-wall steel tube, and anchor is grabbed footstock and is provided with four bearings.The piston pushing body is made of circular piston and strut base, and circular piston and thin-wall steel tube inwall are by the sealing of O type circle.Four anchors are grabbed, and the outer is a blade-like, the convenient incision soil body, when not opening, anchor is grabbed gathering, can put into anchor hole, open the incision soil body after, four anchors are grabbed shape such as ship anchor, catch the soil body that considerable uplift resistance is provided.
The present invention's facility of constructing, anchored force is big.After anchor hole forms, will put into anchor hole behind this anchor head rear portion connection anchor cable, anchor was grabbed and was in closure state this moment.After arriving the precalculated position, from the slip casting of thin-wall steel tube mesohigh, under the grouting pressure effect, the piston pushing body is moved at the bottom of the hole, by strut and movable pin, the anchor that to promote four outers be blade-like is grabbed to the hole wall incision, until arriving predetermined deployed position, form ship anchor shape, catch the soil body that uplift resistance is provided.This moment as continuation grouting, slurry will enter at the bottom of the hole by the preformed hole outflow steel pipe of thin-wall steel tube and anchor is grabbed incision place, forms one.If desired, can apply prestressing force by anchor cable and outside conventional backing plate etc.
The present invention has substantive distinguishing features and marked improvement, the present invention has utilized anchor to grab anchoring face big (anchor is grabbed the solstics, two ends and can be reached more than the 50cm), characteristics that grip is big, the uplift resistance of similar ship anchor effect is provided, can in soil property foundation ditch, side slope wall, provides very big uplift resistance; Utilize high pressure grouting pressure that anchor is grabbed in the construction and open, mainly use conventional grouted rock bolt construction equipment; After anchor was grabbed and opened, continuation grouting can utilize slurry further to improve anchor and grab effect as required.The present invention can improve the anchored force of soil bolt greatly, reduces the cloth number of perforations, improves structural stability and economic benefit.
Description of drawings
Fig. 1 anchor of the present invention is grabbed structural representation when opening
Fig. 2 the present invention installs two anchors and grabs structural representation when not opening
The specific embodiment
As depicted in figs. 1 and 2, the present invention mainly comprises: thin-wall steel tube 1, anchor are grabbed footstock 2, piston pushing body 3, strut 4 and anchor and are grabbed 5, its connected mode is: anchor is grabbed footstock 2 and is connected by anchor post 12 with thin-wall steel tube 1, four strut 4 two grab 5 by strut base 10 and anchor that movable pin connects piston pushing body 3 respectively, anchor is grabbed 5 head and is grabbed footstock 2 by movable pin and anchor and be connected, anchor is grabbed 5 middle part and is connected with strut 4 by movable pin, and the anchor head rear portion is provided with connecting hole and links to each other with anchor cable 7.
Thin-wall steel tube 1 afterbody is provided with slip casing by pressure hole 6, leaves four preformed holes 8 on thin-wall steel tube 1 top, makes anchor grab 5 from 6 pressure groutings of slip casing by pressure hole and opens, and slurry continues to enter anchor hole by four preformed holes 8.Anchor is grabbed footstock 2 and is provided with four bearings.Piston pushing body 3 is made of circular piston 9 and strut base 10, and circular piston 9 seals by O type circle 11 with thin-wall steel tube 1 inwall.Four anchors grab 5, and the outer is a blade-like, and when not opening, anchor is grabbed 5 and drawn in, puts into anchor hole.
Claims (5)
1, a kind of ship anchor type slip casting opening mode soil anchor anchor head, it is characterized in that mainly comprising: thin-wall steel tube (1), anchor is grabbed footstock (2), piston pushing body (3), strut (4) and anchor are grabbed (5), its connected mode is: anchor is grabbed footstock (2) and is connected by anchor post (12) with thin-wall steel tube (1), (5) are grabbed by strut base (10) and anchor that movable pin connects piston pushing body (3) respectively in strut (4) two, the head that anchor is grabbed (5) is grabbed footstock (2) by movable pin and anchor and is connected, the middle part that anchor is grabbed (5) is connected with strut (4) by movable pin, and the anchor head rear portion is provided with connecting hole and links to each other with anchor cable (7).
2, this ship anchor type slip casting opening mode soil anchor anchor head according to claim 1, it is characterized in that thin-wall steel tube (1) afterbody is provided with slip casing by pressure hole (6), and can be connected with anchor cable (7), leave four preformed holes (8) on thin-wall steel tube (1) top, make anchor grab (5) from slip casing by pressure hole (6) pressure grouting and open, slurry continues to enter anchor hole by four preformed holes (8).
3, this ship anchor type slip casting opening mode soil anchor anchor head according to claim 1 is characterized in that anchor grabs footstock (2) and be provided with four bearings.
4, this ship anchor type slip casting opening mode soil anchor anchor head according to claim 1 is characterized in that piston pushing body (3) is made of circular piston (9) and strut base (10), and circular piston (9) seals by O type circle (11) with thin-wall steel tube (1) inwall.
5, this ship anchor type slip casting opening mode soil anchor anchor head according to claim 1 is characterized in that four anchors grab (5), and the outer is a blade-like, and when not opening, anchor is grabbed (5) and drawn in, puts into anchor hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021512868A CN1162589C (en) | 2002-12-12 | 2002-12-12 | Ship anchor type anchor head of ground anchor in grouting stretch model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021512868A CN1162589C (en) | 2002-12-12 | 2002-12-12 | Ship anchor type anchor head of ground anchor in grouting stretch model |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1415805A true CN1415805A (en) | 2003-05-07 |
| CN1162589C CN1162589C (en) | 2004-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB021512868A Expired - Fee Related CN1162589C (en) | 2002-12-12 | 2002-12-12 | Ship anchor type anchor head of ground anchor in grouting stretch model |
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| CN (1) | CN1162589C (en) |
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| CN100342088C (en) * | 2005-08-10 | 2007-10-10 | 蔡崇晓 | Anchor rod type pile pressing machine and construction process |
| CN100445510C (en) * | 2003-09-26 | 2008-12-24 | 安德烈·尼科莱特 | System for fixing an object in the ground by means of a peg |
| CN102011601A (en) * | 2010-11-03 | 2011-04-13 | 河南理工大学 | Rapid anchor cable gun |
| CN102758644A (en) * | 2012-07-16 | 2012-10-31 | 安徽金星预应力工程技术有限公司 | Tension self-locking internal grouting anchor cable |
| CN103133026A (en) * | 2013-03-26 | 2013-06-05 | 安徽理工大学 | Novel expansion shell inverted wedge type grouting anchor rod |
| CN103774662A (en) * | 2014-01-20 | 2014-05-07 | 北京市市政工程研究院 | Self-injection type overall-length joint control anti-burst anchor rod with resistance increase and permeability prevention |
| CN103883341A (en) * | 2014-04-11 | 2014-06-25 | 衢州市优德工业设计有限公司 | Anchor cable allowing prestress to be exerted repeatedly |
| CN104018864A (en) * | 2014-06-27 | 2014-09-03 | 福州市规划设计研究院 | Forepoling radial anchor bolt structure and construction method thereof |
| CN104179178A (en) * | 2014-08-28 | 2014-12-03 | 南昌工程学院 | Flexible umbrella supporting anchor bolt and method for supporting soil slope thereby |
| CN104847266A (en) * | 2015-04-29 | 2015-08-19 | 王春龙 | Anchor rod multi-cross-section chambering machine tool and application thereof |
| CN105178994A (en) * | 2015-09-08 | 2015-12-23 | 中国矿业大学(北京) | Recyclable anchor rod and retaining and protecting method thereof |
| CN105507929A (en) * | 2014-04-11 | 2016-04-20 | 衢州市优德工业设计有限公司 | Anchor cable supporting method of repeatedly applying prestress |
| CN105626112A (en) * | 2016-01-08 | 2016-06-01 | 尤洛卡（山东）深部地压防治安全技术有限公司 | Support device based on built-in type constant-resistance device and use method thereof |
| CN105908740A (en) * | 2016-04-18 | 2016-08-31 | 湖南大学 | Pre-stressed anchor cable anchoring terminal device for deep large landslide super long anchoring |
| CN106248031A (en) * | 2016-07-21 | 2016-12-21 | 赵艳丽 | Electric power steel tube inner hole fixing means |
| CN106498944A (en) * | 2015-08-27 | 2017-03-15 | （株）花郎基础 | The improved permanent anchorage construction method of structure anchors anchor with front end |
| CN106555394A (en) * | 2017-01-12 | 2017-04-05 | 广西大学 | A kind of excessively moist ultra-soft soil drainage arrangement of artificial hydraulic reclamation |
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| CN107989037A (en) * | 2018-01-17 | 2018-05-04 | 上海智平基础工程有限公司 | A kind of enlarged footing anchor structure |
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| CN111379581A (en) * | 2020-03-24 | 2020-07-07 | 淮南东华欧科矿山支护设备有限责任公司 | Deep roadway prestress full-anchor support construction equipment and construction method thereof |
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| CN100445510C (en) * | 2003-09-26 | 2008-12-24 | 安德烈·尼科莱特 | System for fixing an object in the ground by means of a peg |
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| CN111779195A (en) * | 2020-07-06 | 2020-10-16 | 青岛市地铁六号线有限公司 | Novel prestressed anchorage cable expandable inner anchor head |
| CN111779195B (en) * | 2020-07-06 | 2021-05-11 | 青岛市地铁六号线有限公司 | Prestressed anchorage cable expandable inner anchor head |
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| CN113175298A (en) * | 2021-04-02 | 2021-07-27 | 远强地基工程(天津)股份有限公司 | Soil nail wall, rotary jet drilling machine for construction of soil nail wall and construction process |
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| CN113481982A (en) * | 2021-05-31 | 2021-10-08 | 卞婷玉 | Slope reinforcing anchor rod for constructional engineering |
| CN113586113A (en) * | 2021-08-05 | 2021-11-02 | 新乡学院 | Novel multi-claw self-locking grouting anchor rod |
| CN114991107A (en) * | 2022-07-18 | 2022-09-02 | 中国华能集团清洁能源技术研究院有限公司 | Floating body anchoring device |
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