CN103343536B - Pawl type soil bolt and application thereof - Google Patents

Pawl type soil bolt and application thereof Download PDF

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Publication number
CN103343536B
CN103343536B CN201310289750.0A CN201310289750A CN103343536B CN 103343536 B CN103343536 B CN 103343536B CN 201310289750 A CN201310289750 A CN 201310289750A CN 103343536 B CN103343536 B CN 103343536B
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CN
China
Prior art keywords
steel pipe
soil
steel
soil layer
pawl type
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Expired - Fee Related
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CN201310289750.0A
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Chinese (zh)
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CN103343536A (en
Inventor
尤春安
路锋
尤志嘉
栾武臣
杜文
赵坤
吕孝鹏
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Shandong University of Science and Technology
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Shandong University of Science and Technology
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Priority to CN201310289750.0A priority Critical patent/CN103343536B/en
Publication of CN103343536A publication Critical patent/CN103343536A/en
Application granted granted Critical
Publication of CN103343536B publication Critical patent/CN103343536B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention discloses a kind of pawl type soil bolt and application thereof, it comprises a steel pipe, the outer end of steel pipe is provided with external screw thread, stop grouting plug, pallet and nut be equipped with and, it is characterized in that, on steel pipe, be provided with injected hole at interval of certain distance, be provided with steel wire ratchet in the steel pipe walls between injected hole, the front end of steel pipe is provided with taper closing cover. The present invention is because interval is provided with steel wire ratchet, and steel wire ratchet has certain elasticity tension, enters in soil layer, and can only advance and can not exit, and has increased widely the resistance to plucking ability of anchor pole; The injected hole arranging, makes slurries flow out to soil body penetration from each section of anchor pole, and is full of the gap of ratchet disturbance, can form the stepped anchoring section that straightens footpath after slip casting, improves widely the adhesion of anchor pole and soil layer; The taper closing cover arranging, has reduced front end resistance, in the loose side slope soil layer of soil property that can not pore-forming, does not need pore-forming, easy construction.

Description

Pawl type soil bolt and application thereof
Technical field
The present invention relates to soil layer side slope or base pit engineering and reinforce the soil bolt of use.
Background technology
Soil bolt is called for short soil anchor bolt, is in the hole of the side slope of need reinforcing or the Tu Bi brill certain depth of foundation ditch,In hole, put into the materials such as reinforcing bar, steel pipe, steel tendon, steel strand wires, pour into mud or chemical grout, make itBe combined as a whole with soil layer, reach the effect of soil mass consolidation. Because relative other reinforcement means has costLow, consolidation effect good and the advantage such as easy construction, be widely used in soil layer side slope, pattern foundation pit supporting structure, retaining wall,In the various soil layer reinforcing engineerings such as diaphram wall, abutment reinforcing, in to the reinforcing of poor strata, show prosperousThe vitality of containing, its consumption has the trend rising year by year.
But currently used soil anchor bolt is due to simple in structure, when soil layer intensity weak (as drifting sand layer,Mud, boulder bed and part miscellaneous fill layer) time, anchor bolt construction pore-forming difficulty, and the anchor of soil boltSolid and soil layer adhesion are lower, and resistance to plucking ability is low, are difficult to get a desired effect. Therefore at Practical ProjectIn, because the not enough accident that reinforcing inefficacy is caused of anchor force of soil bolt happens occasionally.
Summary of the invention
In order to address the above problem, the present invention proposes a kind of pawl type soil bolt; The present invention provides simultaneouslyUtilize this pawl type soil bolt to soil layer side slope or base pit engineering reinforcement means.
A kind of pawl type soil bolt, it comprises a steel pipe, the outer end of steel pipe is provided with external screw thread, and joinsHave stop grouting plug, pallet and nut, it is characterized in that, on steel pipe, be provided with injected hole at interval of certain distance,In the steel pipe walls between injected hole, be provided with steel bar ratchet, the front end of steel pipe is provided with taper closing cover.
The preferable configuration of above-mentioned steel bar ratchet is: in steel pipe walls, be processed with perforation, to penetrating in perforationSteel bar, the two ends of steel bar, to exposing perforation, are exposed backward oblique rear warpage and are formed splayed shape.
For surrounding has anchor force, be provided with steel bar sour jujube symmetrical in four cross directions at the same section of steel pipePawl. When enforcement, on the same section of steel pipe, penetrate the steel bar of two right-angled intersections, make on steel pipe four directionBe provided with symmetrical steel bar ratchet.
Above-mentioned taper closing cover is the bullet directly being processed by steel pipe front end, or taper closing coverBe the parts of separately processing and be integrated with steel-pipe welding.
The method of utilizing above-mentioned pawl type soil bolt to reinforce soil layer side slope has following two kinds of situations.
One, in the time of the soil layer slope reinforcement to suitable boring, first use drill hole of drilling machine, after boring, utilize rigPawl type soil bolt is pushed in boring, and stop grouting plug is installed in aperture, then in pawl type soil boltInject slurries, slurries flow out and are full of in the hole of the anchor pole soil body around from each injected hole, treat slurriesAfter solidifying, install pallet and fastening nut.
Two, in the time of the soil layer slope reinforcement to Completion of Drilling Hole difficulty, straight with hydraulic drill rig or impact drillConnect pawl type soil bolt is pushed in soil layer, stop grouting plug is installed in aperture, and in pawl type soil boltInject slurries, slurries flow out and are full of anchor pole boring gap around from each injected hole, treat that slurries solidifyAfter install pallet and tightening nuts.
Above-mentioned slurries refer to that neat slurry, cement mortar or chemical grout are wherein a kind of.
In order to ensure grouting quality, before slip casting, should first clean the foreign material of steel duct with high-pressure blast, then carry outSlip casing by pressure.
Advantage of the present invention is:
1, owing to being provided with the steel bar ratchet of spacing distance, steel bar ratchet has certain elasticity tension, enters soilIn layer, and can only advance and can not exit, increase widely the resistance to plucking ability of anchor pole;
2,, owing to being provided with the injected hole of spacing distance, make slurries flow out and ooze to the soil body from each section of anchor poleThoroughly, and be full of the gap of ratchet disturbance, after slip casting, can form the stepped anchoring section that straightens footpath, widelyImprove the adhesion of anchor pole and soil layer;
3, because front end is provided with taper closing cover, reduced front end resistance, loose in soil property that can not pore-formingIn side slope soil layer, do not need pore-forming, the methods such as available hydraulic rig, impact drill or artificial hammering are directly by anchorIn bar injection underground layer, easy construction.
Brief description of the drawings
Fig. 1 is the structure chart of the embodiment of the present invention;
Fig. 2 is the A-A cross section enlarged drawing of Fig. 1;
Fig. 3 is the design sketch after slip casting.
Marginal data: 1-steel pipe; 2-nut; 3-pallet; 4-stop grouting plug; 5-injected hole; 6-steel bar ratchet;7-taper closing cover; 8-slurries.
Detailed description of the invention
Pawl type soil bolt as shown in Figure 1, it comprises a steel pipe 1, outside the rearward end of steel pipe 1 is provided withScrew thread, and stop grouting plug 4, pallet 3 and nut 2 be equipped with, wherein on steel pipe 1, be provided with at interval of certain distanceInjected hole 5, steel pipe 1 wall between injected hole is provided with steel bar ratchet 6, and the front end of steel pipe 1 is provided with taper envelopeClose cap 7.
The structure of steel bar ratchet 6 is as shown in Figure 1 and Figure 2: on steel pipe 1, be processed with perforation, in perforationPenetrate steel bar, the two ends of steel bar are from forming splayed shape to exposing backward oblique rear warpage perforation. From Fig. 2Can find out: on the same section of steel pipe 1, penetrate the steel bar of two right-angled intersections, make on steel pipe four directionBe provided with symmetrical steel bar ratchet.
Above-mentioned taper closing cover 7 is the bullets that directly processed by steel pipe 1 front end, or separatelyThe parts of processing are also welded as a whole with steel pipe 1.
The method of utilizing above-mentioned pawl type soil bolt to reinforce soil layer side slope has two kinds:
One, to reinforcing in can the soil layer side slope of pore-forming while using, first use drill hole of drilling machine, after boring, use anchorBar fitting machine pushes pawl type soil bolt in boring, and stop grouting plug 4 is installed in aperture, and to pawl type soil layerIn anchor pole, inject slurries 8, slurries 8 flow out and are full of anchor pole boring gap around from each injected hole 5,After solidifying, install in slurries 8 pallet 3 and fastening nut 2. Effect after slip casting is shown in Fig. 3.
Two, in the loose soil layer side slope of soil property that can not pore-forming, reinforce while use, with hydraulic drill rig or anchorBar fitting machine directly pushes pawl type soil bolt in soil layer, and grouting is installed in aperture, and 4, and to pawl typeIn soil bolt, inject slurries 8, slurries 8 flow out and are full of anchor pole hole wall seam around from each injected hole 5Gap is installed pallet 3 and fastening nut 2 after slurries 8 solidify. Effect after slip casting is shown in Fig. 3.
In order to ensure grouting quality, before slip casting, should first clean the foreign material of steel pipe 1 inside with high-pressure blast, then enterRow slip casing by pressure. Slurries are selected from neat slurry, cement mortar or chemical grout.

Claims (4)

1. a method of utilizing pawl type soil bolt to reinforce soil layer side slope, is characterized in that, whenIn the time of the soil layer slope reinforcement to Completion of Drilling Hole difficulty, with hydraulic drill rig or impact drill directly by ratchetFormula soil bolt pushes in soil layer, and stop grouting plug is installed in aperture, and injects slurries in pawl type soil bolt,Slurries flow out and are full of anchor pole boring gap around from each injected hole, and pop-up is installed after slurries solidifyDish and tightening nuts; Described pawl type soil bolt structure is: it comprises a steel pipe, the outer end of steel pipePortion is provided with external screw thread, and is equipped with stop grouting plug, pallet and nut, on steel pipe, is provided with note at interval of certain distanceSlurry hole is provided with steel bar ratchet in the steel pipe walls between injected hole, and the front end of steel pipe is provided with taper closing cover;The structure of steel bar ratchet is: on steel pipe, be processed with perforation, penetrate steel bar in perforation, the two ends of steel bar are from wearingIn hole, expose, expose backward oblique rear warpage and form splayed shape.
2. the method for utilizing pawl type soil bolt to reinforce soil layer side slope as claimed in claim 1,It is characterized in that, be provided with steel bar ratchet symmetrical in four cross directions at the same section of steel pipe.
3. the method for utilizing pawl type soil bolt to reinforce soil layer side slope as claimed in claim 1,It is characterized in that, on the same section of steel pipe, penetrate the steel bar of two right-angled intersections, make on steel pipe four directionBe provided with symmetrical steel bar ratchet.
4. the method for utilizing pawl type soil bolt to reinforce soil layer side slope as claimed in claim 1,It is characterized in that, described taper closing cover is the bullet directly being processed by steel pipe front end, orThe parts of processing separately are also integrated with steel-pipe welding.
CN201310289750.0A 2013-07-08 2013-07-08 Pawl type soil bolt and application thereof Expired - Fee Related CN103343536B (en)

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Application Number Priority Date Filing Date Title
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CN103343536B true CN103343536B (en) 2016-05-18

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103572757B (en) * 2013-11-07 2016-08-17 山东交通学院 A kind of multi-level back-grasp-type hollow anchor rod and construction method thereof
CN104805839B (en) * 2015-05-13 2017-11-21 江创葵 A kind of engineering anchor
CN105257328B (en) * 2015-11-30 2017-07-28 湖南科技大学 A kind of the segmentation archoring slip casting archoring-balt device and its anchoring process of energy automatic clamping
CN107816343A (en) * 2017-09-04 2018-03-20 中国科学院武汉岩土力学研究所 The bottom hole fixing device of deformation measuring staff in a kind of rock body drilled
CN108914948A (en) * 2018-05-17 2018-11-30 广东卓建实业集团有限公司 Breakage mountain body restorative procedure
CN108756979A (en) * 2018-06-29 2018-11-06 武汉科技大学 A kind of overall length reverse wedge formula prestressed anchor and its application method
CN112962595A (en) * 2021-02-22 2021-06-15 王大亮 Anchor rod

Citations (8)

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Publication number Priority date Publication date Assignee Title
EP0064362A3 (en) * 1981-04-22 1984-04-11 Neste Oy Rock bolt
CN2723681Y (en) * 2004-09-03 2005-09-07 蒋敬平 Inner anchor external injection type anchor rod
CN2780833Y (en) * 2005-04-12 2006-05-17 秦皇岛市燕盛岩土工程咨询有限公司 Self-drill gruniting roofbolt
CN101324067A (en) * 2008-07-25 2008-12-17 孙艾琳 Ecological anchor rod and method for slope soil and water conservation using the same
CN202055244U (en) * 2011-05-09 2011-11-30 葛洲坝集团试验检测有限公司 Soil compaction type anchor bolt
CN202359557U (en) * 2011-11-30 2012-08-01 兰州大学 Pawl type anchor rod
CN202596756U (en) * 2012-01-01 2012-12-12 谢理想 Shell-expanding high-strength grouting bolt
CN203320527U (en) * 2013-07-08 2013-12-04 山东科技大学 Pawl type soil anchor rod

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CN2245121Y (en) * 1996-05-24 1997-01-15 李晓峰 Self-propelling anchoring-bolt
CN202595739U (en) * 2012-05-17 2012-12-12 王茂华 Anchor rod suitable for soft soil layer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0064362A3 (en) * 1981-04-22 1984-04-11 Neste Oy Rock bolt
CN2723681Y (en) * 2004-09-03 2005-09-07 蒋敬平 Inner anchor external injection type anchor rod
CN2780833Y (en) * 2005-04-12 2006-05-17 秦皇岛市燕盛岩土工程咨询有限公司 Self-drill gruniting roofbolt
CN101324067A (en) * 2008-07-25 2008-12-17 孙艾琳 Ecological anchor rod and method for slope soil and water conservation using the same
CN202055244U (en) * 2011-05-09 2011-11-30 葛洲坝集团试验检测有限公司 Soil compaction type anchor bolt
CN202359557U (en) * 2011-11-30 2012-08-01 兰州大学 Pawl type anchor rod
CN202596756U (en) * 2012-01-01 2012-12-12 谢理想 Shell-expanding high-strength grouting bolt
CN203320527U (en) * 2013-07-08 2013-12-04 山东科技大学 Pawl type soil anchor rod

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