CN103835277B - A kind of air heave type multiple position extensometer anchor head for soft soil layer - Google Patents
A kind of air heave type multiple position extensometer anchor head for soft soil layer Download PDFInfo
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- CN103835277B CN103835277B CN201210480367.9A CN201210480367A CN103835277B CN 103835277 B CN103835277 B CN 103835277B CN 201210480367 A CN201210480367 A CN 201210480367A CN 103835277 B CN103835277 B CN 103835277B
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Abstract
The present invention relates to a kind of air heave type multiple position extensometer anchor head for soft soil layer, this anchor head comprises multiple air heave type anchorage head, a hollow centre pipe and the high-pressure aerated pipe be equal to air heave type anchorage head quantity, air bag is provided with in air heave type anchorage head, the outside of air heave type anchorage head is provided with triangular anchor and grabs, the two ends up and down of each air heave type anchorage head are respectively equipped with upper joint sleeve pipe and lower joint sleeve pipe, hollow centre pipe runs through each air heave type anchorage head successively, and be connected with the upper joint sleeve pipe on each air heave type anchorage head and lower joint sleeve pipe respectively, one end of high-pressure aerated pipe is connected with ground high pressure inflator, the other end penetrates the inside air bag that hollow centre pipe gos deep in each air heave type anchorage head respectively.Compared with prior art, the present invention has that range is large, precision is high, measuring process is by construction interference, unmanned for measure error, construction safety, installation are simple, measure convenient, operating efficiency advantages of higher.
Description
Technical field
The present invention relates to a kind of multiple position extensometer anchor head, especially relate to a kind of air heave type multiple position extensometer anchor head for soft soil layer.
Background technology
The construction project of soft clay area, maximum feature is exactly the feature that weak soil has " three high and one low ", namely there is high-moisture, high-compressibility, high thixotropic and low-intensity, therefore, the how distortion of the soil body in accurate measurements Process of Engineering Construction, be related to the safety of whole engineering, be also the most important thing in engineering simultaneously.
In engineering construction at present work progress, soft clay area land movement meter anchor head generally adopts the anchoring of claw hook formula, compressed wood anchoring, slip casting or Anchor Agent bond-anchorage, bracing type umbrella shape soil anchor anchor head etc.These anchorage styles, by the restriction of Construction Technology level, have many deficiencies.Such as, compressed wood is anchored in soil body anchoring and installs difficulty, operation inconvenience, and water injection time and Bulking Time are difficult to control, and the anchoring strength of the soil body is inadequate, easily causes measuring point in hole to move, makes monitored data inaccurate; The anchoring of claw hook formula, claw hook place makes soil structures destroy, and cause soil body anchoring strength inadequate, poor reliability, makes measuring point in hole depart from actual monitoring point, bring comparatively big error; Bracing type umbrella shape soil anchor anchor head, when umbrella shape soil anchor struts, cause soil structures to destroy, especially easily cause aperture Study on Soil Collapse, soil body anchoring strength is reduced, anti-slide performance declines, and affects soil body anchoring effect; When adopting slip casting or Anchor Agent anchoring, the slip casting time is long, construction inconvenience, and in the soft layer of pole, anchoring effect is not good, causes anchoring strength unreliable, brings measure error, affects the precision of data.
Traditional land movement meter anchor head is in sum inapplicable to soft clay area, especially at rich water soft stratum, because soil body self-stability is poor, water permeability, watery are good, cause the destruction of soil structures during anchor head anchoring, and anchored force is significantly reduced, and lack aperture guard device, easily cause collapse hole, make measurement inaccurate, and rarely have report about the correlative study of soft soil layer air heave type multiple position extensometer anchor head.Compare above-mentioned traditional land movement meter anchor head, soft soil layer air heave type multiple position extensometer anchor head has the advantages such as range is large, structure is simple, anchoring effect is good, anti-slide performance is strong, easy construction, dependable performance.
Chinese patent CN1415805A ship anchor type anchor opening mode scholar anchor anchor head, mainly comprise: thin-wall copper pipe, anchor are grabbed footstock, piston pushing body, strut and anchor and grabbed, anchor is grabbed footstock and is fixedly connected with thin-wall steel tube, strut two connects the strut base of piston pushing body respectively by movable pin and anchor is grabbed, the head that anchor is grabbed is grabbed footstock by movable pin and anchor and is connected, the middle part that anchor is grabbed is connected with strut by movable pin, and anchor head rear portion arranges connecting hole and is connected with anchor cable.But this patent compares the anchoring be applicable in soil property foundation ditch, side slope wall, the anchoring of the weak soft soil layer of inapplicable and rich water, opens incision anchor hole hole wall if utilize high pressure grouting to make anchor grab, can cause the destruction of soil structures, affect the precision of survey data.
Chinese patent CN207622U tube-joint anchored multipoint displacement meter, this device comprises pipe seam formula anchor head, pipe seam formula anchor head is the taper type anchor head with seam that spring steel is made, and be furnished with opening tail circle and hangnail, but this anchor head is mainly used in batholith, roadway, chamber and Tunnel Lamp geotechnical engineering, and can not be used for the anchoring on software stratum.
Chinese patent CN2078375U ground Multi-point displacement metre for drilling hole, mainly from anchor head, overhanging type or convex spring leaf and survey chi composition, anchor head is comparatively large by middle bore, and three sections of reduced pipes cracked that two ends bore is little are fixedly connected with.This patent is applicable to weak stratum, coal body and soil layer and measures, but is not suitable for the software stratum of rich water weakness, easily causes the destruction of anchorage point soil structures, makes soil body anchored force not enough, affects the precision of displacement measurement.
Summary of the invention
Object of the present invention be exactly provide that a kind of range is large, structure is simple, anchoring effect is good, anti-slide performance is strong to overcome defect that above-mentioned prior art exists, easy construction, dependable performance the air heave type multiple position extensometer anchor head for soft soil layer.
Object of the present invention can be achieved through the following technical solutions:
A kind of air heave type multiple position extensometer anchor head for soft soil layer, this anchor head comprises multiple air heave type anchorage head, a hollow centre pipe and the high-pressure aerated pipe be equal to air heave type anchorage head quantity, air bag is provided with in described air heave type anchorage head, the outside of described air heave type anchorage head is provided with triangular anchor and grabs, the two ends up and down of each air heave type anchorage head are respectively equipped with upper joint sleeve pipe and lower joint sleeve pipe, described hollow centre pipe runs through each air heave type anchorage head successively, and be connected with the upper joint sleeve pipe on each air heave type anchorage head and lower joint sleeve pipe respectively, one end of described high-pressure aerated pipe is connected with ground high pressure inflator, the other end penetrates the inside air bag that hollow centre pipe gos deep in each air heave type anchorage head respectively,
When the air bag unaerated of air heave type anchorage head, triangular anchor grabs gathering, makes this anchor head conveniently put into boring, and when the airbag aeration of air heave type anchorage head, triangular anchor is grabbed rapid synchronous expansion in hole and cut soft soil layer and complete anchoring.
Described upper joint sleeve pipe and lower joint sleeve pipe are equipped with locking screw, and described upper joint sleeve pipe is connected hollow centre pipe respectively by upper lock screw with lower lock screw with lower joint sleeve pipe.
Described upper joint sleeve pipe and lower joint sleeve pipe are provided with locating hole.
According to projected depth, air heave type multiple position extensometer anchor head can be formed, be connected with upper joint sleeve pipe by respective lower joint sleeve pipe between upper and lower two air heave type anchorage heads.And positioned by locating hole, guarantee accurate positioning, improve pointing precision.
Described air heave type anchorage head is provided with 2 ~ 5.
Each air heave type anchorage head is provided with four row's triangular anchors and grabs, and each row is provided with 6 triangular anchors and grabs, and four row's triangular anchors grab 90 ° of angles each other.
Be tightly connected between air bag in described hollow centre pipe and air heave type anchorage head.
Described hollow centre pipe with sealed by High-strength glue between the air bag in air heave type anchorage head bonding.
Air bag in described air heave type anchorage head is made up of high-strength pulling-resisting composite material.
Utilize airbag aeration principle, when the air bag unaerated of air heave type anchorage head, triangular anchor grabs gathering, conveniently can put into boring; When the airbag aeration of air heave type anchorage head, triangular anchor is grabbed rapid synchronous expansion in hole and is cut soft soil layer and complete anchoring, 24 of each air heave type anchorage head triangular anchors are grabbed and hole wall close contact, do not destroy the structure of weak soil simultaneously, avoid the generation of boring collapse hole phenomenon, strengthen anchor and grab the contact effect with hole wall, improve the anchored force of measuring point, ensure the reliability of anchoring.
Compared with prior art, the present invention has the following advantages and beneficial effect:
1, air heave type multiple position extensometer anchorage head surface of the present invention arranges triangular anchor and grabs, utilize its airbag aeration dilating principle, when air bag unaerated, triangular anchor grabs gathering, conveniently can put into boring, when air heave type anchorage head airbag aeration, triangular anchor is grabbed rapid synchronous expansion in hole and is cut soft soil layer, do not limit by field condition, easy for installation, structure be simple, reliability and stability are strong, anchoring effect is good, anti-slide performance is strong, dependable performance.
2, air heave type triangular anchor of the present invention grabs the feature that outer is triangle, be conducive to cutting soft soil layer and do not destroy the structure of the soil body, anchor is grabbed with the contact of hole wall tightr, improve the anti-slide performance of air heave type multiple position extensometer anchor head, anchoring effect is more reliable, is applicable to the anchoring in soft soil layer different pore size.
3, the present invention has that range is large, precision is high, measuring process is by construction interference, unmanned for measure error, construction safety, installation are simple, measure convenient, operating efficiency advantages of higher.
Accompanying drawing explanation
Structural representation when Fig. 1 is unaerated of the present invention;
Fig. 2 is the present invention's structural representation when inflating;
Fig. 3 is plan structure schematic diagram of the present invention.
In figure, 1 is air heave type anchorage head, and 2 is upper joint sleeve pipe, and 3 is lower joint sleeve pipe, and 4 is upper lock screw, and 5 is lower lock screw, and 6 is hollow centre pipe, and 7 is boring, and 8 grab for triangular anchor, and 9 be high-pressure aerated pipe, and 10 is lock screw, and 11 is locating hole.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
For an air heave type multiple position extensometer anchor head for soft soil layer, its structure as shown in FIG. 1 to 3,
This anchor head comprises multiple air heave type anchorage head 1, a hollow centre pipe 6 and the high-pressure aerated pipe 9 be equal to air heave type anchorage head 1 quantity, air bag is provided with in air heave type anchorage head 1, the outside of air heave type anchorage head 1 is provided with triangular anchor and grabs 8, the two ends up and down of each air heave type anchorage head 1 are respectively equipped with upper joint sleeve pipe 2 and lower joint sleeve pipe 3, hollow centre pipe 6 runs through each air heave type anchorage head 1 successively, and be connected with the upper joint sleeve pipe 2 on each air heave type anchorage head 1 and lower joint sleeve pipe 3 respectively, one end of high-pressure aerated pipe 9 is connected with ground high pressure inflator, the other end penetrates the inside air bag that hollow centre pipe 6 gos deep in each air heave type anchorage head 1 respectively, upper joint sleeve pipe 2 and lower joint sleeve pipe 3 are equipped with and lock screw 10, upper joint sleeve pipe 2 is connected hollow centre pipe 6 respectively by upper lock screw 4 with lower lock screw 5 with lower joint sleeve pipe 3.Upper joint sleeve pipe 2 and lower joint sleeve pipe 3 are provided with locating hole 11.Each air heave type anchorage head 1 is provided with four row's triangular anchors and grabs 8, and each row is provided with 6 triangular anchors and grabs 8, and four row's triangular anchors grab 8 90 ° of angles each other, an air heave type anchorage head 1 are provided with altogether 24 triangular anchors and grab 8.Sealed bonding between hollow centre pipe 6 with the air bag in air heave type anchorage head 1 by High-strength glue.Air bag in air heave type anchorage head 1 is made up of high-strength pulling-resisting composite material.
According to projected depth, air heave type multiple position extensometer anchor head can be formed, be connected with upper joint sleeve pipe 2 by respective lower joint sleeve pipe 3 between upper and lower two air heave type anchorage heads 1, and be positioned by locating hole 11, guarantee accurate positioning, improve pointing precision.Air heave type anchorage head 1 is provided with 2 ~ 5, adopts the combination of 3 air heave type anchorage heads 1 in the present embodiment.
Utilize airbag aeration principle, when the air bag unaerated of air heave type anchorage head 1, as shown in Figure 1, triangular anchor grabs 8 gatherings, can conveniently put into boring 7.When the airbag aeration of air heave type anchorage head 1, as shown in Figure 2, triangular anchor grab 8 in hole rapid synchronous expansion cut soft soil layer and complete anchoring, 24 of each air heave type anchorage head triangular anchors are made to grab 8 and hole wall close contact, do not destroy the structure of weak soil simultaneously, avoid the generation of boring 7 collapse hole phenomenon, strengthen anchor and grab the contact effect with hole wall, improve the anchored force of measuring point, ensure the reliability of anchoring.
Above-mentioned is can understand and apply the invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (9)
1. the air heave type multiple position extensometer anchor head for soft soil layer, it is characterized in that, this anchor head comprises multiple air heave type anchorage head, a hollow centre pipe and the high-pressure aerated pipe be equal to air heave type anchorage head quantity, air bag is provided with in described air heave type anchorage head, the outside of described air heave type anchorage head is provided with triangular anchor and grabs, the two ends up and down of each air heave type anchorage head are respectively equipped with upper joint sleeve pipe and lower joint sleeve pipe, described hollow centre pipe runs through each air heave type anchorage head successively, and be connected with the upper joint sleeve pipe on each air heave type anchorage head and lower joint sleeve pipe respectively, one end of described high-pressure aerated pipe is connected with ground high pressure inflator, the other end penetrates the inside air bag that hollow centre pipe gos deep in each air heave type anchorage head respectively,
When the air bag unaerated of air heave type anchorage head, triangular anchor grabs gathering, makes this anchor head conveniently put into boring, and when the airbag aeration of air heave type anchorage head, triangular anchor is grabbed rapid synchronous expansion in hole and cut soft soil layer and complete anchoring.
2. a kind of air heave type multiple position extensometer anchor head for soft soil layer according to claim 1, it is characterized in that, described upper joint sleeve pipe and lower joint sleeve pipe are equipped with locking screw, and described upper joint sleeve pipe is connected hollow centre pipe respectively by upper lock screw with lower lock screw with lower joint sleeve pipe.
3. a kind of air heave type multiple position extensometer anchor head for soft soil layer according to claim 1, it is characterized in that, described upper joint sleeve pipe and lower joint sleeve pipe are provided with locating hole.
4. a kind of air heave type multiple position extensometer anchor head for soft soil layer according to claim 1, is characterized in that, is connected between upper and lower two air heave type anchorage heads by respective lower joint sleeve pipe with upper joint sleeve pipe.
5. a kind of air heave type multiple position extensometer anchor head for soft soil layer according to claim 1, it is characterized in that, described air heave type anchorage head is provided with 2 ~ 5.
6. a kind of air heave type multiple position extensometer anchor head for soft soil layer according to claim 1, it is characterized in that, each air heave type anchorage head is provided with four row's triangular anchors and grabs, and each row is provided with 6 triangular anchors and grabs, and four row's triangular anchors grab 90 ° of angles each other.
7. a kind of air heave type multiple position extensometer anchor head for soft soil layer according to claim 1, is characterized in that, is tightly connected between the air bag in described hollow centre pipe and air heave type anchorage head.
8. a kind of air heave type multiple position extensometer anchor head for soft soil layer according to claim 7, is characterized in that, described hollow centre pipe with sealed by High-strength glue between the air bag in air heave type anchorage head bonding.
9. a kind of air heave type multiple position extensometer anchor head for soft soil layer according to claim 1, it is characterized in that, the air bag in described air heave type anchorage head is made up of high-strength pulling-resisting composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210480367.9A CN103835277B (en) | 2012-11-22 | 2012-11-22 | A kind of air heave type multiple position extensometer anchor head for soft soil layer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210480367.9A CN103835277B (en) | 2012-11-22 | 2012-11-22 | A kind of air heave type multiple position extensometer anchor head for soft soil layer |
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| CN103835277A CN103835277A (en) | 2014-06-04 |
| CN103835277B true CN103835277B (en) | 2016-02-17 |
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| CN201210480367.9A Expired - Fee Related CN103835277B (en) | 2012-11-22 | 2012-11-22 | A kind of air heave type multiple position extensometer anchor head for soft soil layer |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862874B (en) * | 2016-04-14 | 2017-09-19 | 浙江科技学院 | A kind of means of defence for controlling closing foundation ditch construction of structures to deform |
| CN110130332A (en) * | 2019-05-07 | 2019-08-16 | 兰州理工大学 | A kind of ground anchored structure |
| CN112050712B (en) * | 2020-08-22 | 2021-11-16 | 深圳华力岩土工程有限公司 | Displacement measuring device for surveying |
| CN112629723B (en) * | 2020-11-26 | 2022-08-16 | 上海城建市政工程（集团）有限公司 | High-precision multi-depth air bag type soil pressure gauge |
| CN112857642B (en) * | 2020-11-26 | 2022-08-19 | 上海城建市政工程（集团）有限公司 | Method for measuring soil pressure in multiple depths |
| CN112504337B (en) * | 2020-11-30 | 2022-05-13 | 同济大学 | Soft soil precipitation and recharge model test device based on optical fiber monitoring |
| CN114136255B (en) * | 2021-11-30 | 2024-02-02 | 重庆大学 | Measuring point self-locking structure and multi-point displacement meter with same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076227U (en) * | 1990-06-06 | 1991-05-01 | 中国矿业大学 | Tube-joint anchored multipoint displacement meter |
| CN2078375U (en) * | 1990-11-19 | 1991-06-05 | 王海亮 | Multi-point displacement meter for drilling in rock and soil |
| CN101638902A (en) * | 2009-08-20 | 2010-02-03 | 高飞 | Method for measuring pile shaft internal force and cross section displacement in vertical dead-load test of foundation pile |
| CN102518110A (en) * | 2011-12-23 | 2012-06-27 | 基康仪器(北京)有限公司 | Device and method for measuring soil body displacement |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012068052A (en) * | 2010-09-21 | 2012-04-05 | Asahi Kasei Construction Materials Co Ltd | Ground property testing device |
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2012
- 2012-11-22 CN CN201210480367.9A patent/CN103835277B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076227U (en) * | 1990-06-06 | 1991-05-01 | 中国矿业大学 | Tube-joint anchored multipoint displacement meter |
| CN2078375U (en) * | 1990-11-19 | 1991-06-05 | 王海亮 | Multi-point displacement meter for drilling in rock and soil |
| CN101638902A (en) * | 2009-08-20 | 2010-02-03 | 高飞 | Method for measuring pile shaft internal force and cross section displacement in vertical dead-load test of foundation pile |
| CN102518110A (en) * | 2011-12-23 | 2012-06-27 | 基康仪器(北京)有限公司 | Device and method for measuring soil body displacement |
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