CN204139169U - A kind of multi-layer helical blade self-drilling soil anchor bolt - Google Patents
A kind of multi-layer helical blade self-drilling soil anchor bolt Download PDFInfo
- Publication number
- CN204139169U CN204139169U CN201420424442.4U CN201420424442U CN204139169U CN 204139169 U CN204139169 U CN 204139169U CN 201420424442 U CN201420424442 U CN 201420424442U CN 204139169 U CN204139169 U CN 204139169U
- Authority
- CN
- China
- Prior art keywords
- helical blade
- rod body
- anchor rod
- centimetres
- blade
- 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.)
- Active
Links
Abstract
A kind of multi-layer helical blade self-drilling soil anchor bolt, comprise front end anchor rod body (1), described front end anchor rod body (1) is provided with front end helical blade (4-1) on the external surface of apex point one end, the sidewall of front end anchor rod body (1) is positioned near front end helical blade (4-1) and offers slurry outlet (5), the other end of front end anchor rod body (1) is threaded connection position (6) and is connected with one end of stage casing anchor rod body (2), the other end of stage casing anchor rod body (2) is connected with the one end lengthening anchor pole (8) by adapter sleeve (7), the external surface of stage casing anchor rod body (2) is provided with helical blade (4-2), the utility model is rational in infrastructure, in soft clay area, this blade has extremely strong penetration power, construction technology is safe and reliable, increase contact area, enhance anchored force, improve efficiency of construction and construction quality, ensure that it more effectively can improve the uplift resistance of anchor pole in different soil.
Description
Technical field
The utility model relates to a kind of anchor pole, particularly relates to a kind of multi-layer helical blade self-drilling soil anchor bolt, belongs to brill and dig anchoring field.
Background technology
For disappear at the bottom of the building basement be embedded in groundwater table high field ground, subway, underground store, civil air defense works, large pool, the dam buildings such as unrestrained pond or structure, should dead load be born, bear again because of groundwater table higher than bottom surface, hole the buoyancy that brings.When buoyancy is even as big as overcoming the weight of construction of structures, drift, inclination or destruction will be there is, therefore effectively must control harmful vertical displacement that buoyancy brings when structure design.
Current Anti-floating design is widely used in engineering, the main method adopting anti-floating pile and anti-float anchor rod, and anti-floating pile and anti-float anchor rod all adopt reinforced concrete structure, and because reinforced steel bar strength is low, therefore its amount of reinforcement is comparatively large, and cost is high.Complicated construction technique, the duration is longer, and construction quality is difficult to ensure.In addition, present stage anti-floating pile and anti-float anchor rod must engineering foundation construction before carry out, when there is a particular/special requirement strict or basement construction time for construction period, such as: must construct when dry season, adopt anti-floating pile and anti-float anchor rod can not meet above demand.Conventional monolayers spiral anchor rod easily pierces soil layer, but anchoring strength is low, and length spiral anchor rod anchoring strength is high, but pierces soil layer difficulty, cannot meet construction demand.
Such as Chinese patent mandate publication number is: CN203685063U, the day for announcing is: on July 2nd, 2014, utility model patent disclosed the feeding device of a kind of auger stem and auger stem, this feeding device comprises the feed liquor body being wholely set with the body of rod of auger stem or being connected with the body of rod, feed tube surface offers the charging aperture communicated with auger stem blanking channel through its endoporus, auger stem is when constructing, the retaining wall liquid poured into from aperture can arrive bottom the connected drill bit in body of rod lower end by the blanking channel of the body of rod through the charging aperture of feeding device, retaining wall liquid can be augmented in time when carrying drilling rod.But this device is single, pierce soil layer difficulty, and anchoring contact area is less, uplift resistance is not enough.
Summary of the invention
The purpose of this utility model is simple for anchor structure in the building basement base plate anti-floating engineering of existing soft clay area, anchoring contact area is less, the hypodynamic defect of resistance to plucking and deficiency, now provide a kind of rational in infrastructure, easy construction, drilling efficiency is high, and anchoring contact area is comparatively large, a kind of multi-layer helical blade self-drilling soil anchor bolt that uplift resistance is strong.
For realizing the purpose of this utility model, technical solution of the present utility model is: a kind of multi-layer helical blade self-drilling soil anchor bolt, comprise front end anchor rod body, the front end of front end anchor rod body is closed taper shape, described front end anchor rod body is provided with front end helical blade on the external surface of apex point one end, the sidewall of front end anchor rod body is positioned near the helical blade of front end and offers slurry outlet, the other end of front end anchor rod body is threaded connection position and is connected with one end of stage casing anchor rod body, the other end of stage casing anchor rod body is connected with the one end lengthening anchor pole by adapter sleeve, stage casing anchor rod body is more than two or two, the external surface of stage casing anchor rod body is provided with helical blade, front end helical blade is identical with the hand of spiral of helical blade, the sidewall of stage casing anchor rod body is positioned near helical blade and offers slurry outlet.
Institute's front end anchor rod body, stage casing anchor rod body and latter end anchor rod body all adopt seamless hollow steel pipe, and its diameter is 3 centimetres-7 centimetres.
Described front end helical blade is the three above helical blades in Dao Huo tri-road, the blade exradius of front end helical blade near apex point one end is less than the blade exradius away from apex point one end, distance between per pass helical blade is 12 centimetres-18 centimetres, the maximum exradius of blade of front end helical blade is 35 centimetres-60 centimetres, and the spiral angle of front end helical blade is 45 degree.
Described helical blade is the three above helical blades in Dao Huo tri-road, and the distance between adjoining spiral blade is 80 centimetres-120 centimetres, and the blade exradius of helical blade is 35 centimetres-60 centimetres, and the spiral angle of helical blade is 45 degree.
Described slurry outlet to be diameter the be circular hole of 0.5 centimetre-1.5 centimetres, and slurry outlet is evenly opened on the outer wall of front end anchor rod body and stage casing anchor rod body.
The beneficial effects of the utility model are:
1, the utility model adopts the connection of front end anchor rod body, stage casing anchor rod body and latter end anchor rod body to combine, in order to improve the length of anchor pole, adopt the stage casing anchor rod body of more than two or two to dock successively to form, the body of rod adopts multiple tracks helical blade improve drilling efficiency.
2, the utility model is rational in infrastructure, construction period is short, cost is low, in soft clay area, this blade has extremely strong penetration power, reduces and creeps into difficulty, adopts the utility model mode formed anchoring body of constructing to be easy to construct compared with traditional anchoring body simultaneously, construction technology is safe and reliable, increase contact area, enhance anchored force, improve efficiency of construction and construction quality, ensure that it more effectively can improve the uplift resistance of anchor pole in different soil, improve the validity of anti-floating engineering.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the schematic diagram of A-A in Fig. 1.
In figure: front end anchor rod body 1, stage casing anchor rod body 2, latter end anchor rod body 3, front end helical blade 4-1, helical blade 4-2, slurry outlet 5, screw connection point 6, adapter sleeve 7, lengthens anchor pole 8.
Detailed description of the invention
Illustrate below in conjunction with accompanying drawing and with detailed description of the invention, the utility model to be described in further detail.
See Fig. 1, Fig. 2, a kind of multi-layer helical blade self-drilling soil anchor bolt of the present utility model, comprise front end anchor rod body 1, the front end of front end anchor rod body 1 is closed taper shape, described front end anchor rod body 1 is provided with front end helical blade 4-1 on the external surface of apex point one end, the sidewall of front end anchor rod body 1 is positioned near the helical blade 4-1 of front end and offers slurry outlet 5, the other end of front end anchor rod body 1 is threaded connection position 6 and is connected with one end of stage casing anchor rod body 2, the other end of stage casing anchor rod body 2 is connected with the one end lengthening anchor pole 8 by adapter sleeve 7, stage casing anchor rod body 2 is more than two or two, the external surface of stage casing anchor rod body 2 is provided with helical blade 4-2, front end helical blade 4-1 is identical with the hand of spiral of helical blade 4-2, the sidewall of stage casing anchor rod body 2 is positioned near helical blade 4-2 and offers slurry outlet 5.
Institute's front end anchor rod body 1, stage casing anchor rod body 2 and latter end anchor rod body 3 all adopt seamless hollow steel pipe, and its diameter is 3 centimetres-7 centimetres.
Described front end helical blade 4-1 is the three above helical blades in Dao Huo tri-road, the blade exradius of front end helical blade 4-1 near apex point one end is less than the blade exradius away from apex point one end, distance between per pass helical blade is 12 centimetres-18 centimetres, the maximum exradius of blade of front end helical blade 4-1 is 35 centimetres-60 centimetres, and the spiral angle of front end helical blade 4-1 is 45 degree.
Described helical blade 4-2 is the three above helical blades in Dao Huo tri-road, and the distance between adjoining spiral blade 4-2 is 80 centimetres-120 centimetres, and the blade exradius of helical blade 4-2 is 35 centimetres-60 centimetres, and the spiral angle of helical blade 4-2 is 45 degree.
Described slurry outlet 5 for diameter be the circular hole of 0.5 centimetre-1.5 centimetres, and slurry outlet 5 is evenly opened on the outer wall of front end anchor rod body 1 and stage casing anchor rod body 2.
See Fig. 1, front end anchor rod body 1 is made up of seamless hollow steel pipe, and the front end of front end anchor rod body 1 is closed taper shape, and front end anchor rod body 1 is provided with front end helical blade 4-1 on the external surface of apex point one end.Front end helical blade 4-1 is the three above helical blades in Dao Huo tri-road, the blade exradius of front end helical blade 4-1 near apex point one end is less than the blade exradius away from apex point one end, distance between per pass helical blade is 12 centimetres-18 centimetres, the maximum exradius of blade of front end helical blade 4-1 is 35 centimetres-60 centimetres, and the spiral angle of front end helical blade 4-1 is 45 degree.The sidewall of front end anchor rod body 1 is positioned near the helical blade 4-1 of front end and offers slurry outlet 5, and slurry outlet 5 is for circle hole shape and evenly arrange.
Stage casing anchor rod body 2 is made up of seamless hollow steel pipe, the external surface of stage casing anchor rod body 2 is provided with helical blade 4-2, front end helical blade 4-1 is identical with the hand of spiral of helical blade 4-2, and the sidewall of stage casing anchor rod body 2 is positioned near helical blade 4-2 and offers slurry outlet 5.The end of front end anchor rod body 1 is threaded connection position 6 and is connected with one end of stage casing anchor rod body 2, the other end of stage casing anchor rod body 2 is connected with the one end lengthening anchor pole 8 by adapter sleeve 7, in order to improve the entire length of anchor pole further, stage casing anchor rod body 2 can adopt more than two or two to dock successively and form.The sidewall of stage casing anchor rod body 2 is positioned near helical blade 4-2 and offers slurry outlet 5, slurry outlet 5 for diameter be the circular hole of 0.5 centimetre-1.5 centimetres, aperture is not easily too large, controls can strengthen its jet power at 1 cm, soil body blocking slurry outlet 5 when also can prevent from creeping into.
A kind of multi-layer helical blade self-drilling soil anchor bolt construction method concrete steps of the present utility model are as follows: first connect anchor pole, the end of front end anchor rod body 1 is threaded connection position 6 and is connected with one end of stage casing anchor rod body 2, the other end of stage casing anchor rod body 2 is connected with the one end lengthening anchor pole 8 by adapter sleeve 7, is connected with one or more stage casing anchor rod body 2 between front end anchor rod body 1 and lengthening anchor pole 8.Multi-layer helical blade soil anchor bolt after connecing subsequently is arranged on jumbolter, and the height of adjustment soil anchor bolt enters angle with turning.Then select location creeps into, and the apex point of front end anchor rod body 1 is aimed at precalculated position, starts jumbolter and starts to bore soil, front end helical blade 4-1 and helical blade 4-2 is all entered in soil layer.After front end helical blade 4-1 and helical blade 4-2 all enters soil layer, the middle cavity high pressure of cement paste by soil anchor bolt is injected, cement paste is ejected from slurry outlet 5 and enters soil layer around, anchor pole stops creeping into after arriving desired depth, continues gunite until saturated.The soil body around water under high pressure mud extruding front end helical blade 4-1 and helical blade 4-2, makes cement paste wrap up helical blade and anchor pole respectively, is solidified into the anchoring body of string-like.
The utility model is rational in infrastructure, and the construction period is short, cost is low, and in soft clay area, this blade has extremely strong penetration power, reduces and creeps into difficulty.The utility model mode formed anchoring body of constructing is adopted to be easy to construct compared with traditional anchoring body, construction technology is safe and reliable, increase contact area, enhance anchored force, improve efficiency of construction and construction quality, ensure that it more effectively can improve the uplift resistance of anchor pole in different soil, the validity of anti-floating engineering.
Claims (5)
1. a multi-layer helical blade self-drilling soil anchor bolt, comprise front end anchor rod body (1), the front end of front end anchor rod body (1) is closed taper shape, it is characterized in that: described front end anchor rod body (1) is provided with front end helical blade (4-1) on the external surface of apex point one end, the sidewall of front end anchor rod body (1) is positioned near front end helical blade (4-1) and offers slurry outlet (5), the other end of front end anchor rod body (1) is threaded connection position (6) and is connected with one end of stage casing anchor rod body (2), the other end of stage casing anchor rod body (2) is connected with the one end lengthening anchor pole (8) by adapter sleeve (7), stage casing anchor rod body (2) is more than two or two, the external surface of stage casing anchor rod body (2) is provided with helical blade (4-2), front end helical blade (4-1) is identical with the hand of spiral of helical blade (4-2), the sidewall of stage casing anchor rod body (2) is positioned near helical blade (4-2) and offers slurry outlet (5).
2. a kind of multi-layer helical blade self-drilling soil anchor bolt according to claim 1, is characterized in that: institute's front end anchor rod body (1), stage casing anchor rod body (2) and latter end anchor rod body (3) all adopt seamless hollow steel pipe, and its diameter is 3 centimetres-7 centimetres.
3. a kind of multi-layer helical blade self-drilling soil anchor bolt according to claim 1, it is characterized in that: described front end helical blade (4-1) is the three above helical blades in Dao Huo tri-road, the blade exradius of front end helical blade (4-1) near apex point one end is less than the blade exradius away from apex point one end, distance between per pass helical blade is 12 centimetres-18 centimetres, the maximum exradius of blade of front end helical blade (4-1) is 35 centimetres-60 centimetres, and the spiral angle of front end helical blade (4-1) is 45 degree.
4. a kind of multi-layer helical blade self-drilling soil anchor bolt according to claim 1, it is characterized in that: described helical blade (4-2) is the three above helical blades in Dao Huo tri-road, distance between adjoining spiral blade (4-2) is 80 centimetres-120 centimetres, the blade exradius of helical blade (4-2) is 35 centimetres-60 centimetres, and the spiral angle of helical blade (4-2) is 45 degree.
5. a kind of multi-layer helical blade self-drilling soil anchor bolt according to claim 1, it is characterized in that: described slurry outlet (5) for diameter be the circular hole of 0.5 centimetre-1.5 centimetres, and slurry outlet (5) is evenly opened on the outer wall of front end anchor rod body (1) and stage casing anchor rod body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420424442.4U CN204139169U (en) | 2014-07-30 | 2014-07-30 | A kind of multi-layer helical blade self-drilling soil anchor bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420424442.4U CN204139169U (en) | 2014-07-30 | 2014-07-30 | A kind of multi-layer helical blade self-drilling soil anchor bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204139169U true CN204139169U (en) | 2015-02-04 |
Family
ID=52415866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420424442.4U Active CN204139169U (en) | 2014-07-30 | 2014-07-30 | A kind of multi-layer helical blade self-drilling soil anchor bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204139169U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141305A (en) * | 2014-07-30 | 2014-11-12 | 武汉武大巨成结构股份有限公司 | Multi-layer spiral blade self-drilling-type soil anchor rod and constructing method thereof |
| CN105239569A (en) * | 2015-09-24 | 2016-01-13 | 河海大学 | Multi-section jointed recoverable screw enlarging-head anchor rod structure and construction method thereof |
| CN111691907A (en) * | 2020-07-31 | 2020-09-22 | 中建隧道建设有限公司 | Anchor rod for tunnel support |
-
2014
- 2014-07-30 CN CN201420424442.4U patent/CN204139169U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141305A (en) * | 2014-07-30 | 2014-11-12 | 武汉武大巨成结构股份有限公司 | Multi-layer spiral blade self-drilling-type soil anchor rod and constructing method thereof |
| CN104141305B (en) * | 2014-07-30 | 2016-08-24 | 武大巨成结构股份有限公司 | A kind of multi-layer helical blade self-drilling type soil anchor bolt and construction method thereof |
| CN105239569A (en) * | 2015-09-24 | 2016-01-13 | 河海大学 | Multi-section jointed recoverable screw enlarging-head anchor rod structure and construction method thereof |
| CN111691907A (en) * | 2020-07-31 | 2020-09-22 | 中建隧道建设有限公司 | Anchor rod for tunnel support |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104141305B (en) | A kind of multi-layer helical blade self-drilling type soil anchor bolt and construction method thereof | |
| CN103669346A (en) | Sleeve valve pipe and application to landslide control | |
| CN204139169U (en) | A kind of multi-layer helical blade self-drilling soil anchor bolt | |
| CN101560775A (en) | Composite soil nailing wall structure | |
| CN201614595U (en) | Rotation-type anchor tubular pile | |
| CN111364532B (en) | Existing pile foundation reinforcement method based on slurry control | |
| CN2652998Y (en) | Bundled steel twisted wire anchor with rotary spray drill bit | |
| CN202187340U (en) | Socketed pile with concrete-filled steel tube core column | |
| CN110439353A (en) | A kind of erection construction method of concrete wire pole overturning-preventing | |
| CN204174618U (en) | Soft foundation recoverable prestressed anchor Cable Structure | |
| CN204040041U (en) | A kind of front close rear thin Double-row Piles Support system being provided with vertical anchor pole | |
| CN206144587U (en) | Odd -shaped cross section cavity self -drilling stock | |
| CN109322624B (en) | Anchoring hole bottom reaming device | |
| CN205189918U (en) | Intumescent cavity slip casting stock | |
| CN204125941U (en) | Uplift pile structure | |
| CN103276724B (en) | A kind of anti-floating pile of built-in nonmetal muscle material | |
| CN207673287U (en) | A kind of jet-propelled high-efficiency helical drilling tool | |
| CN203583468U (en) | Anti-floating pile with built-in nonmetal rib material | |
| CN102286971A (en) | Concrete-filled steel tube core column socketed pile | |
| CN209385062U (en) | A kind of anchor hole bottom hole Counterboring apparatus | |
| CN206887953U (en) | Soil nailing port closing device and soil nailing wall structure | |
| CN103306280A (en) | Stirring anchor pile implanted in inner hole of drill rod and anchoring method | |
| CN204803898U (en) | Subway station basement supporting construction | |
| CN209011146U (en) | A kind of sky iron open caisson system | |
| CN203129140U (en) | Soil nailing tube with functions of water injecting, hole forming, grouting, anchoring, pumping and water discharging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430223 Hubei city of Wuhan province East Lake Development Zone Wuhan University Science Park Road No. 4 Patentee after: WUDA JUCHENG STRUCTURE CO., LTD. Address before: 430223 Hubei city of Wuhan province East Lake Development Zone Wuhan University Science Park Road No. 4 Patentee before: WUDA JUCHENG STRUCTURE CO., LTD. |