CN106240749A - Grouting formula suction anchor and installation method thereof - Google Patents
Grouting formula suction anchor and installation method thereof Download PDFInfo
- Publication number
- CN106240749A CN106240749A CN201610523473.9A CN201610523473A CN106240749A CN 106240749 A CN106240749 A CN 106240749A CN 201610523473 A CN201610523473 A CN 201610523473A CN 106240749 A CN106240749 A CN 106240749A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- grouting
- suction anchor
- anchor
- cement
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/24—Anchors
- B63B21/26—Anchors securing to bed
- B63B21/27—Anchors securing to bed by suction
-
- 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
Abstract
The invention discloses a kind of grouting formula suction anchor, including cylinder, cylinder is made up of the upper, middle, and lower part of integrative-structure, top barrel diameter and the equal diameters of lower cylinder, middle cylinder diameter is less than upper and lower part barrel diameter, the centrage of upper, middle, and lower part cylinder is same, and the top of top cylinder is provided with some grouting imports and osculum；Grouting import communicates with the grouting channel in the sidewall of top cylinder, grouting channel extends downward the lower surface of top cylinder, the outlet of grouting channel lower end, between the lateral surface and the lateral surface of middle cylinder of top cylinder, separates between grouting channel and cylinder lumen independently of one another.The invention also discloses this suction anchor installation method.After having passed through under suction anchor, in middle cylinder with soil body space, pour into cement mortar, the side bearing capacity of suction anchor can be improved.After theing cement solidifies, increase the coefficient of friction of surrounding soil and anchor cylinder contact surface, improve suction anchor ultimate bearing capacity.
Description
Technical field
The present invention relates to a kind of building technology, especially a kind of grouting formula suction anchor and installation method thereof.
Background technology
Suction anchor is the steel cylinder of a top closure, open at its lower end, lies against seabed and the deadweight by anchor makes anchor cylinder lower edge embedding
In burying, in formation anchor cylinder after the closed state of water body, by the grouting pump being arranged on the anchor lid of top to extracardiac pumping, and
The water yield extracted out in making the same time exceedes the water yield penetrated into from bottom, causes anchor cylinder internal pressure to reduce.When by anchor cylinder,
When what external differential caused the act on pressure vertically downward on anchor lid exceedes soil is to the resistance of anchor cylinder, anchor cylinder can continuous quilt
In press-in soil, until sinker terminates when anchor lid bottom surface contacts with seabed. now grouting pump can shed, between anchor cylinder is inside and outside
Pressure differential fade away, cylinder pressure returns to ambient pressure.
After suction anchor installation, its bearing capacity is mainly derived from the frictional resistance between anchor cylinder inside and outside wall and the soil body.By
In the suction anchor vertical injection soil body, its vertical Ultimate Up-lift Bearing Capacity is far smaller than side bearing capacity.
The Chinese patent application of Application No. 200910244850.5 discloses the cylinder-shaped foundation structure of a kind of band force bearing ring.
This patent is by bucket foundation and is fixed on the force bearing ring outside bucket foundation barrel and constitutes, and force bearing ring longitudinal section is triangle.Cylinder
After having passed through under type basis, force bearing ring can provide bigger anti-pulling capacity.But force bearing ring also can make to pass through under bucket foundation
Resistance increases, therefore its horizontal section area can not be excessive, can only provide less anti-pulling capacity.
The Chinese patent application of Application No. 201310566730.3 discloses the suction anchor of a kind of band attached skirts.This suction
Power anchor is launched by shirt rim, lower end, improves Ultimate Up-lift Bearing Capacity.But shirt rim launches to require harshness, it is difficult to realize.
The Chinese patent application of Application No. 201310091856.X discloses a kind of undersea suction anchor.This patent application is led to
Crossing the combination of anchor skirt and anchor branch and improve under suction anchor the stability through journey, simultaneously behind anchor skirt injection seabed, anchor skirt is the most permissible
Protection suction anchor surrounding soil, can utilize again anchor skirt to improve anti-pulling capacity with soil body friction.But the carrying of this suction anchor
Power source is still that the frictional resistance of barrel or anchor skirt inside and outside wall and the soil body, fails to change the source of anti-pulling capacity.
Summary of the invention
It is an object of the invention to as overcoming above-mentioned the deficiencies in the prior art, it is provided that a kind of grouting formula suction anchor and installation side thereof
Method, after having passed through under this suction anchor, by pouring into cement mortar so that cement enters soil around in middle cylinder with soil body space
Body space.After theing cement solidifies, suction anchor surrounding soil can be reinforced, increase the coefficient of friction of surrounding soil and anchor cylinder contact surface,
Improve suction anchor ultimate bearing capacity.It addition, form the cement skirt of a solidification around middle cylinder, cement skirt and the soil body are linked as one
Body can stop on suction anchor and pulls out, thus suction anchor anti-pulling capacity is greatly improved.
For achieving the above object, the present invention uses following technical proposals:
A kind of grouting formula suction anchor, including bottom-open, the cylinder of top closure, described cylinder is by the upper, middle and lower of integrative-structure
Three part compositions, top barrel diameter and the equal diameters of lower cylinder, middle cylinder diameter is less than upper and lower part barrel diameter,
The centrage of upper, middle, and lower part cylinder is same, and the top of top cylinder is provided with some grouting imports and some and cylinder
The osculum that intracoelomic cavity communicates；Described grouting import communicates with the grouting channel in the sidewall of top cylinder, and grouting channel is downward
Extending to the lower surface of top cylinder, the outlet of grouting channel lower end is positioned at the lateral surface of top cylinder and the outside of middle cylinder
Between face, separate independently of one another between grouting channel and cylinder lumen.
0.8 ~ 0.9 times of described middle cylinder a diameter of top barrel diameter, middle cylinder diameter can not be the least, it is to avoid because of
Barrel diameter is the least causes suction anchor local strength not enough.
/ 4th of a length of described cylinder total length of described middle cylinder, for having enough oozing after ensureing cement injection
Entering soil body scope, therefore middle cylinder length is unsuitable too short.
Described grouting import has four, is distributed in cylinder top in cross-shaped symmetrical.
Described grouting import top is connected with grouting pump, and bottom communicates with the grouting channel within the cylinder lateral wall of top,
Grouting channel is exported by grouting and is connected with the space between middle cylinder and the soil body.
Described grouting import and the equal semicircular in shape of grouting channel.
Center, described cylinder upper surface is provided for the foundation ring of basis lifting.
Described osculum is provided with two, and two osculums are positioned at foundation ring both sides.
Described osculum connects with suction pump, is used for extracting the pulp-water in cylinder.
A kind of grouting formula suction anchor installation method, comprises the following steps:
1) first with anchor chain, foundation ring is fixed, suction pump is connected with osculum and grouting import respectively with grouting pump；
2) on sea bed, grouting formula suction anchor is positioned, utilize the self gravitation injection sea bed of grouting formula suction anchor；
3) when passing through down under the formula suction anchor that is in the milk is at Gravitative Loads, suction pump is opened, it is achieved the suction of grouting formula suction anchor
Pass through under formula, when barrel end flushes with sea bottom surface, close suction pump；
4) now, opening grouting pump, by import of being in the milk, cement is poured into grouting channel, final cement is entered middle part by outlet of being in the milk
Space that cylinder and the soil body are formed and enter soil body space；
5) forming cement skirt after theing cement solidifies, cement skirt forms an entirety, energy by penetrating into the cement of the soil body with surrounding soil
Stop and pull out on suction anchor, improve suction anchor Ultimate Up-lift Bearing Capacity.
In the present invention, after having passed through under suction anchor, by pouring into cement mortar in middle cylinder with soil body space so that water
Mud enters surrounding soil space.After theing cement solidifies, suction anchor surrounding soil can be reinforced so that surrounding soil rigidity and intensity increase
Add, thus the side bearing capacity of suction anchor can be improved.Make surrounding soil and the coefficient of friction of anchor cylinder contact surface much larger than former simultaneously
The soil body and the coefficient of friction of anchor drum outer wall, improve suction anchor ultimate bearing capacity.It addition, form a solidification around middle cylinder
Cement skirt, cement skirt and the soil body are connected as a single entity can stop on suction anchor and pull out, thus suction anchor anti-pulling capacity is greatly improved.
Accompanying drawing explanation
Fig. 1, Fig. 2 are one of the present invention grouting formula suction anchor external perspective view；
Fig. 3 is the one of the present invention internal three-dimensional view of grouting formula suction anchor；
Fig. 4 is grouting formula suction anchor installation state diagram in the present invention one；
In figure: 1-foundation ring, 2-osculum, 3-top cylinder, 4-middle cylinder, 5-lower cylinder, 6-grouting import, 7-grouting
Passage, 8-grouting outlet, 9-cement skirt, 10-cement and soil body mixture.
Detailed description of the invention
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Structure depicted in this specification institute accompanying drawings, ratio, size etc., the most only in order to coordinate disclosed in description in
Hold, understand for those skilled in the art and read, being not limited to the enforceable qualifications of the present invention, therefore do not have skill
Essential meaning in art, the modification of any structure, the change of proportionate relationship or the adjustment of size, can produce not affecting the present invention
Under the effect given birth to and the purpose that can reach, all should still fall in the range of disclosed technology contents obtains and can contain.
Meanwhile, in this specification cited as " on ", D score, "left", "right", the term of " middle " and " " etc., be merely convenient to
Understanding of narration, and it is not used to limit the enforceable scope of the present invention, being altered or modified of its relativeness, changing without essence
Under technology contents, when being also considered as the enforceable category of the present invention.
As it is shown in figure 1, a kind of grouting formula suction anchor, including the cylinder that Open Side Down, center, cylinder upper surface is arranged
For the foundation ring 1 of basis lifting, foundation ring both sides arrange two osculums 2, and end face surrounding arranges four grouting imports 6.Two
Individual osculum 2 is connected with suction pump, when suction pump is opened, it is achieved pass through under the suction type of suction anchor.
As shown in Figure 1 and Figure 2, cylinder is made up of top cylinder 3, middle cylinder 4 and lower cylinder 5 so that pass through under suction anchor
After completing, between middle cylinder 4 and the soil body, form certain space.After grouting, this space is full of cement, forms cement skirt 9, water
Mud skirt 9 forms an entirety by penetrating into the cement of the soil body with surrounding soil, stops and pulls out on suction anchor, improves the suction anchor limit and resist
Pull out bearing capacity.Meanwhile, cement enters surrounding soil space, can reinforce suction anchor surrounding soil, increases surrounding soil and connects with anchor cylinder
The coefficient of friction of contacting surface, improves suction anchor ultimate bearing capacity.
As shown in Figure 1 and Figure 2, top cylinder 3 is consistent with lower cylinder 5 diameter.Middle cylinder 4 a diameter of top cylinder 3
0.8 ~ 0.9 times, 1/4th of a length of suction anchor total length.Middle cylinder 4 diameter can not be the least, it is to avoid because of barrel diameter too
Little cause suction anchor local strength not enough；Additionally, it should ensure there are enough scopes penetrating into the soil body after cement injection, therefore in
Portion's cylinder 4 length is unsuitable too short.
As shown in Figure 2 and Figure 3, four grouting import 6 across are distributed in anchor cylinder end face edge, top and grouting pump phase
Connecting, bottom is connected with the grouting channel 7 within anchor cylinder, and grouting channel 7 is by grouting outlet 8 and middle cylinder and surrounding soil
Space between body communicates.Grouting channel does not connects with cylinder.Grouting channel 7 is the hollow pipeline being close to top cylinder 3 inwall,
Internal with top cylinder 3 be connected so that under pass through and two processes of being in the milk are independent of each other.
After having passed through under suction anchor, utilize grouting pump that by import 6 of being in the milk, cement is poured into grouting channel 7, final cement by
Grouting outlet 8 enters the space of cylinder and soil body formation and enters soil body space.
As shown in Figure 4, forming cement skirt 9 after theing cement solidifies, cement skirt 9 is by penetrating into cement and the surrounding soil shape of the soil body
Become an entirety, can stop on suction anchor and pull out, improve suction anchor Ultimate Up-lift Bearing Capacity.Cement and the mixture 10 of the soil body simultaneously
Coefficient of friction with anchor drum outer wall is much larger than the coefficient of friction of original soil body and anchor cylinder, can improve suction anchor bearing capacity.Additionally water
Mud enters soil body space and forms soil-cement body mixture so that surrounding soil rigidity and intensity increase, thus can improve suction anchor
Side bearing capacity.
Although the detailed description of the invention of the present invention is described by the above-mentioned accompanying drawing that combines, but not the present invention is protected model
The restriction enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme, and those skilled in the art are not
Need to pay various amendments or deformation that creative work can make still within protection scope of the present invention.
Claims (10)
1. a grouting formula suction anchor, including bottom-open, the cylinder of top closure, is characterized in that, described cylinder is by integrally tying
The upper, middle, and lower part composition of structure, top barrel diameter and the equal diameters of lower cylinder, middle cylinder diameter is less than upper and lower
Portion's barrel diameter, the centrage of upper, middle, and lower part cylinder is same, the top of top cylinder be provided with some be in the milk into
Mouth and some osculums communicated with cylinder lumen；Described grouting import communicates with the grouting channel in the sidewall of top cylinder,
Grouting channel extends downward the lower surface of top cylinder, the outlet of grouting channel lower end be positioned at the lateral surface of top cylinder with in
Between the lateral surface of portion's cylinder, separate independently of one another between grouting channel and cylinder lumen.
2. grouting formula suction anchor as claimed in claim 1, is characterized in that, described middle cylinder a diameter of top barrel diameter
0.8 ~ 0.9 times.
3. grouting formula suction anchor as claimed in claim 1, is characterized in that, a length of described cylinder total length of described middle cylinder
1/4th.
4. grouting formula suction anchor as claimed in claim 1, is characterized in that, described grouting import has four, in cross-shaped symmetrical
It is distributed in cylinder top.
5. the grouting formula suction anchor as described in claim 1 or 4, is characterized in that, described grouting import top is connected with grouting pump
Connecing, bottom communicates with the grouting channel within the cylinder lateral wall of top, and grouting channel is by grouting outlet and middle cylinder and the soil body
Between space be connected.
6. grouting formula suction anchor as claimed in claim 1, is characterized in that, described grouting import and grouting channel are all in semicircle
Shape.
7. grouting formula suction anchor as claimed in claim 1, is characterized in that, center, described cylinder upper surface is provided for base
The foundation ring of plinth lifting.
8. grouting formula suction anchor as claimed in claim 7, is characterized in that, described osculum is provided with two, two osculums
It is positioned at foundation ring both sides.
9. the grouting formula suction anchor as described in claim 1 or 8, is characterized in that, described osculum connects with suction pump.
10. a grouting formula suction anchor installation method, is characterized in that, comprise the following steps:
1) first with anchor chain, foundation ring is fixed, suction pump is connected with osculum and grouting import respectively with grouting pump；
2) on sea bed, grouting formula suction anchor is positioned, utilize the self gravitation injection sea bed of grouting formula suction anchor；
3) when passing through down under the formula suction anchor that is in the milk is at Gravitative Loads, suction pump is opened, it is achieved the suction of grouting formula suction anchor
Pass through under formula, when barrel end flushes with sea bottom surface, close suction pump；
4) now, opening grouting pump, by import of being in the milk, cement is poured into grouting channel, final cement is entered middle part by outlet of being in the milk
Space that cylinder and the soil body are formed and enter soil body space；
5) forming cement skirt after theing cement solidifies, cement skirt forms an entirety, energy by penetrating into the cement of the soil body with surrounding soil
Stop and pull out on suction anchor, improve suction anchor Ultimate Up-lift Bearing Capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610523473.9A CN106240749B (en) | 2016-07-06 | 2016-07-06 | Grouting formula suction anchor and its installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610523473.9A CN106240749B (en) | 2016-07-06 | 2016-07-06 | Grouting formula suction anchor and its installation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106240749A true CN106240749A (en) | 2016-12-21 |
| CN106240749B CN106240749B (en) | 2017-12-05 |
Family
ID=57613744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610523473.9A Expired - Fee Related CN106240749B (en) | 2016-07-06 | 2016-07-06 | Grouting formula suction anchor and its installation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106240749B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930317A (en) * | 2017-03-18 | 2017-07-07 | 山东科瑞机械制造有限公司 | A kind of dismountable many base large bearing capacity suction base apparatuses |
| CN114852256A (en) * | 2022-06-02 | 2022-08-05 | 交通运输部广州打捞局 | Suction anchor and use method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57178987A (en) * | 1981-04-02 | 1982-11-04 | Shell Int Research | Suction anchor and its installing method |
| CN2354869Y (en) * | 1998-09-21 | 1999-12-22 | 天津市海王星海上工程技术有限公司 | Gravity suction anchor |
| CN1438390A (en) * | 2002-02-15 | 2003-08-27 | 株式会社大宇建设 | Construction method of suction pile |
| CN1440904A (en) * | 2002-02-26 | 2003-09-10 | 天津市海王星海上工程技术有限公司 | Self-installed suction anchor |
| KR100402890B1 (en) * | 2001-04-02 | 2003-10-22 | 심석래 | Method and apparatus for mounting rock bolt |
| CN201883448U (en) * | 2009-06-24 | 2011-06-29 | 天津市海王星海上工程技术有限公司 | Mixed foundation on sea |
| CN102433876A (en) * | 2011-08-31 | 2012-05-02 | 浙江大学城市学院 | Multi-compartment casing composite pile and construction method thereof |
| KR20150014221A (en) * | 2013-07-29 | 2015-02-06 | 한국팽이건설 주식회사 | Micropile of pressure injection and it's construction method |
-
2016
- 2016-07-06 CN CN201610523473.9A patent/CN106240749B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57178987A (en) * | 1981-04-02 | 1982-11-04 | Shell Int Research | Suction anchor and its installing method |
| CN2354869Y (en) * | 1998-09-21 | 1999-12-22 | 天津市海王星海上工程技术有限公司 | Gravity suction anchor |
| KR100402890B1 (en) * | 2001-04-02 | 2003-10-22 | 심석래 | Method and apparatus for mounting rock bolt |
| CN1438390A (en) * | 2002-02-15 | 2003-08-27 | 株式会社大宇建设 | Construction method of suction pile |
| CN1440904A (en) * | 2002-02-26 | 2003-09-10 | 天津市海王星海上工程技术有限公司 | Self-installed suction anchor |
| CN201883448U (en) * | 2009-06-24 | 2011-06-29 | 天津市海王星海上工程技术有限公司 | Mixed foundation on sea |
| CN102433876A (en) * | 2011-08-31 | 2012-05-02 | 浙江大学城市学院 | Multi-compartment casing composite pile and construction method thereof |
| KR20150014221A (en) * | 2013-07-29 | 2015-02-06 | 한국팽이건설 주식회사 | Micropile of pressure injection and it's construction method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930317A (en) * | 2017-03-18 | 2017-07-07 | 山东科瑞机械制造有限公司 | A kind of dismountable many base large bearing capacity suction base apparatuses |
| CN114852256A (en) * | 2022-06-02 | 2022-08-05 | 交通运输部广州打捞局 | Suction anchor and use method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106240749B (en) | 2017-12-05 |
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Granted publication date: 20171205 Termination date: 20190706 |