CN107190744B - A kind of ground anchorage suitable for saturated sand place - Google Patents
A kind of ground anchorage suitable for saturated sand place Download PDFInfo
- Publication number
- CN107190744B CN107190744B CN201710418720.3A CN201710418720A CN107190744B CN 107190744 B CN107190744 B CN 107190744B CN 201710418720 A CN201710418720 A CN 201710418720A CN 107190744 B CN107190744 B CN 107190744B
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- drilling rod
- flap valve
- drill bit
- ground anchorage
- film bag
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/80—Ground anchors
- E02D5/801—Ground anchors driven by screwing
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/80—Ground anchors
- E02D5/803—Ground anchors with pivotable anchoring members
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0038—Production methods using an auger, i.e. continuous flight type
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention discloses a kind of ground anchorage suitable for saturated sand place, including drilling rod and drill bit, and the drill bit is mounted on the drilling rod bottom end, is evenly arranged multiple permeable holes on the drilling rod wall.It is an object of the invention to reduce or overcome the problems, such as that traditional ground anchorage generates excessive disturbance during saturated sand place pierces and causes earth anchor periphery sand that a wide range of liquefaction occurs to the greatest extent, permeable hole is equipped on the outside of drilling rod, excess pore water caused by drilling rod disturbs during burying can penetrate into drilling rod by permeable hole, accelerate its dissipation, to reduce the possibility that liquefaction occurs, guarantee the extraction-resistant behavior of earth anchor drilling rod.
Description
Technical field
The present invention relates to building traffic engineering apparatus fields, and in particular to a kind of earth anchor dress suitable for saturated sand place
It sets.
Background technique
When loose saturated sand soil site is explored or carries out test, often it is related to being drilled with for earth anchor counterforce structure.In
In traditional soft soil layer, spirally anchor structure is used widely because its structure is simple.Common hand power screw earth anchor is (such as
Mechanical static penetrometer is equipped with) brill disk diameter usually in 25cm or more, and be arranged for monolithic helical disk, drilling rod mostly uses solid
Steel anchor rod, weight are larger.
Find when cone penetration test and boring extracting soil are tested in loose saturated sand soil site, using it is above-mentioned spirally
The native later period is anchored into, the soil body obviously weakens the resistance of drilling rod.The reason of this phenomenon occur is that saturated sand is boring around drilling rod
Bar buries and is liquefied under perturbation action, and soil shear strength almost disappears, and earth anchor pulling capacity in this environment will be by
Weaken to apparent.In view of the principal element for influencing earth anchor pulling capacity in saturated sand stratum has: by disturbed soil around drilling rod
Body range, liquefaction possibility occurrence and drilling rod surrounding soil pressure-bearing surface, intend on traditional ground anchor structure device basic, to corresponding structure
Part improves, to obtain the ideal ground anchorage for being suitable for saturated sand place layer.
Before the present invention, in soft soil layer, previous scholars propose all kinds of ground anchorages, such as two-way expansion
Anchor, screw anchor, umbrella pressure-bearing earth anchor etc..In addition, Chinese patent CN201320034336.0, which discloses one kind, has flight
Ground anchor peg, pass through flight improve earth anchor withdrawal resistance.Chinese patent CN201310129938.9 discloses a kind of two-way expansion
Earth anchor, sliding block struts the longitudinal direction of seamless steel pipe and both ends dilatation joint realizes earth anchor expansion.Chinese patent CN201410210998.8
The umbrella pressure-bearing earth anchor that can be recycled in a kind of soft soil layer is disclosed, forms anchor by umbrella frame and by the umbrella cover that fiber cloth sews
Bolt, and it is linked to be entirety with stake top reinforced concrete lid fine strain of millet, reinforce the withdrawal resistance performance of earth anchor.However, these are usually used in soft soil layer
Ground anchor structure can not solve the problems, such as that the disturbance of earth anchor drilling rod generates liquefaction of soil mass in saturated sand stratum.It therefore, need to be to existing
Technology improves, so as to the various problems that the ground anchorage in comprehensively solve saturated sand place is faced, such as saturated sand
Native liquefaction, extraction-resistant behavior deficiency etc..
In view of the above drawbacks, creator of the present invention obtains of the invention a kind of suitable finally by prolonged research and practice
Ground anchorage for saturated sand place.
Summary of the invention
To solve above-mentioned technological deficiency, the technical solution adopted by the present invention is, provides a kind of suitable for saturated sand field
The ground anchorage on ground, including drilling rod and drill bit, the drill bit are mounted on the drilling rod bottom end, are evenly arranged on the wall of the drilling rod
There are multiple permeable holes；The drill bit includes pedestal and plural pieces flap valve, and the flap valve is connect with the pedestal by shaft, described
Torsional spring is installed in shaft；Water filling film bag is installed in the cavity constituted between the flap valve；The pedestal of the drill bit is equipped with
Shaft lock, for controlling the open angle of the flap valve, is tipped in when the flap valve is opened to maximum angle by the spindle lock
Row limit；The water filling film bag is elliposoidal, after lowest part is opened to maximum angle not less than the flap valve after expansion completely
Depth；
After the drill bit is drilled to designated depth, filled the water using high-pressure hydraulic pump into the water filling film bag, the water filling film
Bag expands against the flap valve and opens, and is formed and expands anchor head, controls the water filling film bag body according to the high-pressure hydraulic pump water yield
The long-pending and flap valve open angle；The drill bit fan-shaped extension in the water filling film bag expansion process forms soil-baffling structure.
Preferably, the permeable hole assumes diamond in shape or quincuncial arrangement, pitch of holes 2-6cm, aperture 0.1-0.2cm.
Preferably, the outer wall of the drilling rod is equipped with multistage screw thread disc.
Preferably, the disk diameter of the screw thread disc increases step by step upwards along the drilling rod bottom end.
Preferably, the disk diameter of the screw thread disc is 6-10cm.
Preferably, being equipped with the water injection pipe of perforation in the drilling rod, described water injection pipe one end is connect with the water filling film bag,
The other end stretches out the drilling rod and connect with external connecting pipe, and the connecting tube is connected with high-pressure hydraulic pump.
Preferably, being equipped with relief valve in the connecting tube.
Preferably, the drilling-rod external wall is equipped with Multi-stage rotary card slot, the ground anchorage includes for rotating the drilling rod
Swingle, the swingle includes clamping opening and multiple swing handles, and the clamping opening shape is corresponding with the rotation card slot.
Preferably, the drilling rod top is equipped with connection bolt.
Compared with the prior art the beneficial effects of the present invention are:
1, drilling rod outside of the present invention is equipped with permeable hole, and the caused excess pore water of disturbance can during drilling rod pierces saturated sand
To penetrate into drilling rod by permeable hole, accelerate its dissipation, to reduce the possibility that liquefaction occurs, guarantees the resistance to plucking of earth anchor drilling rod
Energy.
2, the monolithic large-diameter thread disc that multistage minor diameter screw thread disc replaces traditional earth anchor, In is distributed in drilling rod outside
Drilling rod can utmostly reduce the range around drilling rod by disturbed soil during burying, drilling rod side wall has multistage minor diameter spiral shell
Line disc, and disk diameter increases step by step upwards along drilling rod, can reduce withdrawal resistance caused by reducing due to disc diameter to the greatest extent and lose.
3, drill bit is equipped with flap valve and water filling film bag, and flap valve outwardly opens in water filling film bag expansion process, is formed and expands anchor
Head simultaneously pushes flap valve to form support flank, will greatly improve earth anchor extraction-resistant behavior, and when unloading opens relief valve, fills the water film water-in-bag
Body discharge, flap valve no longer provide support force to upper earthing, and drilling rod rotation is facilitated to extract.
4, earth anchor and drilling equipment or other equipment can connect by drilling rod top bolt, drilling-rod external wall is equipped with multiple rotations
Turn card slot, can be manually drilled with according to piercing depth and adjusting swingle position in due course.
5, drilling rod, drill bit, water injection pipe, water filling film bag, connecting tube, high-pressure hydraulic pump, swingle in ground anchorage of the present invention
It is individual member, it is convenient for disassembly and assembly, convenient for replacement, it can according to need and be used cooperatively.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical solution in various embodiments of the present invention
The attached drawing used is briefly described.
Fig. 1 is the schematic diagram of drill pipe body structure of the present invention；
Fig. 2 is the working state schematic representation of drill bit of the present invention；
Fig. 3 is the structure chart of swingle of the present invention；
Fig. 4 is the overall structure figure of ground anchorage of the present invention.
Digital representation in figure:
1. 11. permeable hole of drilling rod, 12. screw thread disc 13., which connects bolt 14., rotates 2. drill bit of card slot, 21. flap valve
22. 23. shaft of pedestal lock, 3. water filling 4. water injection pipe of film bag, 5. connecting tube, 6. relief valve, 7. high-pressure hydraulic pump, 8. swingle
81. 82. swing handle of clamping opening
Specific embodiment
Below in conjunction with attached drawing, the forgoing and additional technical features and advantages are described in more detail.
Embodiment one:
As shown in Figure 1, a kind of ground anchorage suitable for saturated sand place, including drilling rod 1 and drill bit 2.1 main body of drilling rod
For hollow cylindrical tube, bottom end is equipped with drill bit 2.
Multiple permeable holes 11 are evenly arranged on 1 outer wall of drilling rod, disturbance causes during drilling rod 1 pierces saturated sand
Excess pore water can by permeable hole 11 penetrate into drilling rod 1, accelerate drilling rod 1 bury during vibrate caused by excess pore water pressure
It dissipates, reduces the possibility that liquefaction occurs, to guarantee the extraction-resistant behavior of earth anchor drilling rod.
Three-level screw thread disc 12 is additionally provided on 1 outer wall of drilling rod, the disk diameter of screw thread disc 12 increases step by step upwards along drilling rod 1,
Withdrawal resistance loses caused by this design can reduce to the greatest extent due to disc diameter reduction.
1 top of drilling rod is equipped with connection bolt 13 and facilitates engineering to use for connecting drilling equipment or other equipment.Drilling rod 1
Outer wall is equipped with two-stage and rotates card slot 14, respectively close to 1 top of drilling rod and middle part, can rotate stress position according to depth adjustment is pierced
It sets and is drilled with.
Embodiment two:
The present embodiment on the basis of the above embodiments, the 1 length 150cm of drilling rod, outer diameter 3.4cm.The permeable hole
11 assume diamond in shape or quincuncial arrangement, pitch of holes 2-6cm, aperture 0.1-0.2cm.Position is arranged in permeable aperture 11 and aperture is computed
It obtains, it is ensured that excess pore water enters drilling rod 1, reduces the possibility that liquefaction occurs.
The disk diameter of the screw thread disc 12 is 6-10cm, and the monolithic of traditional earth anchor is replaced by multistage minor diameter screw thread disc 12
Large-diameter thread disc can utmostly reduce the range around drilling rod 1 by disturbed soil during drilling rod 1 buries.
1 outer wall of drilling rod is equipped with Multi-stage rotary card slot 14, and every grade of rotation 14 spacing of card slot are identical, can be according to piercing depth
Degree adjustment rotation forced position is drilled with.
Embodiment three:
The present embodiment on the basis of the above embodiments, as shown in Fig. 2, the drill bit 2 includes that pedestal 22 and plural pieces are living
Valve 21.The flap valve 21 is connect with pedestal 22 by shaft, and torsional spring is equipped in the shaft, and flap valve 21 can be opened with stress,
After external force removes, flap valve 21 is closed under spring force.The pedestal 22 of drill bit 2 is equipped with shaft lock 23, for controlling
The open angle of flap valve 21 is stated, is limited when flap valve 21 is opened to maximum angle by shaft lock 23.Between each flap valve 21
Water filling film bag 3 is installed, water filling film bag 3 is connect with water injection pipe 4 perforative in drilling rod 1, and water filling film bag 3 is ellipse in the cavity of composition
Spherical shape, lateral length are much larger than vertical extension, expand in water filling.
A, b, c are structural schematic diagram of the drill bit 2 under different conditions in figure, and a is 21 closed state of flap valve in figure, fill the water film
Bag 3 does not fill the water, is in folded state；B display water filling film bag 3 starts dilation by water injection in figure, and flap valve 21 is pushed to outwardly open；In figure
C flap valve 21 is opened to maximum angle, and water filling 3 lowest part of film bag is opened to the depth after maximum angle not less than flap valve 21, is formed
Flank is supported, earth anchor extraction-resistant behavior is improved.Water body discharge in film bag 3 will be filled the water when unloading, flap valve 21 no longer provides upper earthing
Support force facilitates the rotation of drilling rod 1 to extract.
Example IV:
On the basis of the above embodiments, the ground anchorage includes the rotation for rotating the drilling rod 1 to the present embodiment
Bar 8.As shown in figure 3, the swingle 8 includes clamping opening 81 and three swing handles 82, the rotation of 81 shape of clamping opening and 1 outer wall of drilling rod
It is corresponding to turn card slot 14.
Manually be drilled with and pseudo-first-order revotating card slot 14 is fixed in the clamping opening 81 of swingle 8, rotary motion handle
82, drive drilling rod 1 to be drilled with, drilling rod 1 enters soil layer, can adjust 8 position of swingle in due course according to depth is pierced.
Embodiment five:
The present embodiment on the basis of the above embodiments, as shown in figure 4, a kind of earth anchor suitable for saturated sand place fills
It sets, including drilling rod 1,2 swingle 8 of drill bit and high pressure water injection system, the high pressure water injection system include the note being mounted in drill bit 2
Moisture film bag 3, the water injection pipe 4 being mounted in drilling rod, independent high-pressure hydraulic pump 7 and for connecting the water injection pipe 4 and high-pressure hydraulic pump 7
Connecting tube 5.Relief valve 6 is installed in the connecting tube 5, carries out pressure release for releasing the water in high pressure water injection system.It is described
4 one end of water injection pipe is connect with the water filling film bag 3, and the other end stretches out drilling rod 2 and connect with external connecting pipe 5.Earth anchor dress of the present invention
Drilling rod 1, drill bit 2, water injection pipe 4, water filling film bag 3, connecting tube 5, high-pressure hydraulic pump 7, swingle 8 in setting are individual member, are torn open
Dress is convenient, convenient for replacement, can according to need and is used cooperatively.
It is an object of the invention to reduce to the greatest extent or overcome traditional ground anchorage to produce during saturated sand place pierces
The problem of giving birth to excessive disturbance and causing earth anchor periphery sand that a wide range of liquefaction occurs.Its specifically used step is:
(1) determination is drilled with position, and after drill bit 2 is positioned, the rotation card slot 14 of drilling rod 2 is buckled in using 8 clamping opening 81 of swingle
Place, operation swing handle 82 are manually drilled with, and rotate card slot 14 to junior according to piercing depth and adjusting 8 position of swingle in due course
Place；
(2) it after being drilled to designated depth, is filled the water using high-pressure hydraulic pump 7 into water filling film bag 3, water filling film bag 3 expands against
Flap valve 21 is opened, and is formed and is expanded anchor head, controls water filling 3 volume of film bag and 21 open angle of flap valve according to 7 water yield of high-pressure hydraulic pump.
The fan-shaped extension in 8 expansion process of film bag of drill bit 2 forms soil-baffling structure；
(3) it by the fixed drilling rod 1 of connection bolt 13 at the top of drilling rod 2 and other equipment, completes ground anchorage and fixes；
(4) it when unloading, opens relief valve 6 and sluices, fill the water the 3 sluicing after-contraction of film bag, flap valve 21 is under the effect of torsion spring
It sets back, no longer provides support force to upper earthing, drilling rod 1 is extracted in rotation.
The foregoing is merely presently preferred embodiments of the present invention, is merely illustrative for the purpose of the present invention, and not restrictive
's.Those skilled in the art understand that in the spirit and scope defined by the claims in the present invention many changes can be carried out to it,
It modifies or even equivalent, but falls in protection scope of the present invention.
Claims (7)
1. a kind of ground anchorage suitable for saturated sand place, which is characterized in that including drilling rod and drill bit, the drill bit installation
In the drilling rod bottom end, multiple permeable holes have been evenly arranged on the wall of the drilling rod；
The drill bit includes pedestal and plural pieces flap valve, and the flap valve is connect with the pedestal by shaft, peace in the shaft
Equipped with torsional spring；Water filling film bag is installed in the cavity constituted between the flap valve；The pedestal of the drill bit is latched equipped with shaft,
For controlling the open angle of the flap valve, limited when the flap valve is opened to maximum angle by the spindle lock button；Institute
Stating water filling film bag is elliposoidal, and lowest part is opened to the depth after maximum angle not less than the flap valve completely after expansion；
After the drill bit is drilled to designated depth, filled the water using high-pressure hydraulic pump into the water filling film bag, the water filling film bag is swollen
It is swollen that the flap valve is pushed to open, formed and expand anchor head, according to the high-pressure hydraulic pump water yield control the water filling film bag body product with
The flap valve open angle；The drill bit fan-shaped extension in the water filling film bag expansion process forms soil-baffling structure.
2. being suitable for the ground anchorage in saturated sand place as described in claim 1, which is characterized in that the permeable hole is in water chestnut
Shape or quincuncial arrangement, pitch of holes 2-6cm, aperture 0.1-0.2cm.
3. being suitable for the ground anchorage in saturated sand place as described in claim 1, which is characterized in that the outer wall of the drilling rod
Equipped with multistage screw thread disc, the disk diameter of the screw thread disc is 6-10cm.
4. being suitable for the ground anchorage in saturated sand place as claimed in claim 3, which is characterized in that the screw thread disc
Disk diameter increases step by step upwards along the drilling rod bottom end.
5. being suitable for the ground anchorage in saturated sand place as described in claim 1, which is characterized in that installation in the drilling rod
There is the water injection pipe of perforation, described water injection pipe one end is connect with the water filling film bag, and the other end stretches out the drilling rod and external connection
Pipe connection, the connecting tube are connected with high-pressure hydraulic pump.
6. being suitable for the ground anchorage in saturated sand place as claimed in claim 5, which is characterized in that pacify in the connecting tube
Equipped with relief valve.
7. the ground anchorage suitable for saturated sand place as described in claim 1-6 is any, which is characterized in that the drilling rod
Outer wall is equipped with Multi-stage rotary card slot, and the ground anchorage includes the swingle for rotating the drilling rod, and the swingle includes
Clamping opening and multiple swing handles, the clamping opening shape are corresponding with the rotation card slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710418720.3A CN107190744B (en) | 2017-06-06 | 2017-06-06 | A kind of ground anchorage suitable for saturated sand place |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710418720.3A CN107190744B (en) | 2017-06-06 | 2017-06-06 | A kind of ground anchorage suitable for saturated sand place |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107190744A CN107190744A (en) | 2017-09-22 |
| CN107190744B true CN107190744B (en) | 2019-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710418720.3A Active CN107190744B (en) | 2017-06-06 | 2017-06-06 | A kind of ground anchorage suitable for saturated sand place |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111055968A (en) * | 2019-12-05 | 2020-04-24 | 天津大学前沿技术研究院有限公司 | Square anchor wing power penetration anchor capable of enhancing in-place bearing capacity |
| CN111055969A (en) * | 2019-12-05 | 2020-04-24 | 天津大学前沿技术研究院有限公司 | Power injection anchor with punching semicircular anchor wing and capable of enhancing in-place bearing capacity |
| CN111721613A (en) * | 2020-06-04 | 2020-09-29 | 河北建筑工程学院 | Wind-blown sand anchor rod drawing test device and test method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2863894Y (en) * | 2006-02-23 | 2007-01-31 | 杨安平 | Valve type pile shoe |
| CN202182830U (en) * | 2011-08-29 | 2012-04-04 | 中国地质科学院水文地质环境地质研究所 | Sandy soil rotary embedding device |
| CN103911992A (en) * | 2014-04-18 | 2014-07-09 | 中南大学 | Balloon-stringed inflating anchor rod |
| CN207512738U (en) * | 2017-06-06 | 2018-06-19 | 宁波市交通建设工程试验检测中心有限公司 | A kind of ground anchorage |
-
2017
- 2017-06-06 CN CN201710418720.3A patent/CN107190744B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2863894Y (en) * | 2006-02-23 | 2007-01-31 | 杨安平 | Valve type pile shoe |
| CN202182830U (en) * | 2011-08-29 | 2012-04-04 | 中国地质科学院水文地质环境地质研究所 | Sandy soil rotary embedding device |
| CN103911992A (en) * | 2014-04-18 | 2014-07-09 | 中南大学 | Balloon-stringed inflating anchor rod |
| CN207512738U (en) * | 2017-06-06 | 2018-06-19 | 宁波市交通建设工程试验检测中心有限公司 | A kind of ground anchorage |
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| CN107190744A (en) | 2017-09-22 |
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