CN108677967A - Perforated soil nail combines earth anchor method for protecting support in a kind of fill stratum - Google Patents
Perforated soil nail combines earth anchor method for protecting support in a kind of fill stratum Download PDFInfo
- Publication number
- CN108677967A CN108677967A CN201810525858.8A CN201810525858A CN108677967A CN 108677967 A CN108677967 A CN 108677967A CN 201810525858 A CN201810525858 A CN 201810525858A CN 108677967 A CN108677967 A CN 108677967A
- Authority
- CN
- China
- Prior art keywords
- floral tube
- earth anchor
- steps
- fill stratum
- steel floral
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/40—Miscellaneous comprising stabilising elements
Abstract
The present invention proposes perforated soil nail combination earth anchor method for protecting support in a kind of fill stratum, includes the following steps：S1, steel floral tube processing form the structure that can easily enter under the action of pneumatic hammer in fill stratum；S2, measurement simultaneously mark steel floral tube to enter the position of fill stratum, and the steel floral tube that S1 steps machine is placed in fill stratum side slope according to the position of label；Slurries are poured into S3, the steel floral tube being placed in fill stratum side slope to S2 steps；S4, progress earth anchor lacing wire are attached with the steel floral tube top machined in S1 steps；S5, the earth anchor being connect with steel floral tube in S4 steps is fixed, and carries out face layer supporting after the completion of fixed；Cost of labor is reduced while the construction period that perforated soil nail combination earth anchor method for protecting support can shorten in fill stratum proposed by the present invention.
Description
Technical field
The present invention relates to the realm of building construction, perforated soil nail combination earth anchor supporting side in a kind of fill stratum is particularly related to
Method.
Background technology
Foundation pit is the heatable adobe sleeping platform excavated by substrate absolute altitude and basic plane size in basic engineering position；As China is built
The fast development of industry, the building waste that construction generates are increasing.Urban building waste total amount is 2,100,000,000 to 2,800,000,000 at present
Ton, the annual new building waste that generates is more than 300,000,000 tons, has accounted for 1/3 of municipal refuse total amount or more.Most of Solid construction rubbish
Simple landfill disposal mode is taken, it is annual thus all to occupy 1.5 hundred million to 200,000,000 square metres of lands used.
In foundation pit construction, finding stratum subsurface slag the thickness of the layer is increasing.With the transition from the old to the new of building,
The stabilization of fill stratum side slope also gradually becomes the key points and difficulties of foundation pit support construction.
It is in the prior art to pass to use the supporting of jumbolter pore-forming or pile-anchor retaining to fill stratum slope retaining；However it is such
Mode one side operation difficulty is larger, while causing the operation cycle to increase operating cost is increased,
Invention content
Perforated soil nail combines earth anchor method for protecting support in a kind of fill stratum of present invention proposition, solves in the prior art right
Long construction period and the high problem of construction cost in fill stratum Bracing Process.
The technical proposal of the invention is realized in this way：
Perforated soil nail combines earth anchor method for protecting support in a kind of fill stratum, includes the following steps：
S1, steel floral tube processing form the structure that can easily enter under the action of pneumatic hammer in fill stratum；
S2, measurement simultaneously mark steel floral tube to enter the position of fill stratum, and are machined S1 steps according to the position of label
Steel floral tube be placed in fill stratum side slope；
Slurries are poured into S3, the steel floral tube being placed in fill stratum side slope to S2 steps；
S4, progress earth anchor lacing wire are attached with the steel floral tube top machined in S1 steps；
S5, the earth anchor being connect with steel floral tube in S4 steps is fixed, and carries out face layer supporting after the completion of fixed.
As further technical solution, further include：S6 steps：The horizontal component of earth anchor lacing wire is poured with ground
It builds.
As further technical solution, S1 steps are：
Extravasating hole is bored on spray of molten steel tube wall；And penetrated through with circular hole at the top of floral tube, it is inserted into bar connecting head；And in floral tube bottom
Make tapered pipe cap.
As further technical solution, S1 steps are：
It is spaced 300mm on spray of molten steel tube wall and bores extravasating hole；And a diameter of of the two-way firing perforation of cutting torch is used at the top of floral tube
20mm circular holes are inserted into the bar connecting head that a diameter of 16mm and length are 30cm；And make tapered pipe cap in floral tube bottom.
As further technical solution, S2 includes：
S21, the position for needing to be placed in steel floral tube is measured in fill stratum side slope, and above-mentioned position is labeled；
S22, according to the position marked in S21, steel floral tube is placed in by labeling position by pneumatic hammer successively.
As further technical solution, S3 steps are：
Slurries are pressed into steel floral tube by slip casting machine, are poured into fill stratum after so that slurries is passed through steel floral tube, steel floral tube fills
It is 0.4~0.5 to starch the ratio of mud in the mud used.
As further technical solution, S3 steps are：
The slurries containing non-irrigated strong agent are pressed into steel floral tube by slip casting machine, fill stratum is poured into after so that slurries is passed through steel floral tube
In, the ratio of mud in the mud that steel floral tube grouting uses is 0.4~0.5.
As further technical solution, S4 steps are：It will be welded at the top of earth anchor lacing wire and steel floral tube using electric welding machine.
As further technical solution, S4 steps are：
It will be connect with the reinforcement welding at the top of steel floral tube with the earth anchor lacing wire of a diameter of 16mm using electric welding machine；And it is welding
After the completion extending to earth anchor lacing wire distal end, foundation pit 4m suitable for reading is outer to be connect with earth anchor stress point；Earth anchor lacing wire is along ramp portion and face
Layer mesh sheet fitting, is bonded more than the earth anchor lacing wire point at the top of side slope with ground.
As further technical solution, S5 steps are：
The vertical pore-forming of earth anchor stress point injects cement mortar after being inserted into reinforcing bar；By at the top of reinforcing bar and ground after cement mortar condensation
Anchor lacing wire is welded.
The construction method of technical solution of the present invention is reasonable, can ensure that construction procedure is simple in work progress, and reduces and apply
The work period, due to needing manpower intervention in work progress, therefore, because the construction period shortened, and then cost of labor is reduced, with
Jumbolter pore-forming supporting in the prior art or pile-anchor retaining method construction compares, the present invention can cost-effective 40% with
On.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the flow chart that perforated soil nail combines earth anchor method for protecting support in a kind of fill stratum of the present invention；
Fig. 2 is the flow that perforated soil nail combines another embodiment of earth anchor method for protecting support in a kind of fill stratum of the present invention
Figure.
Fig. 3 combines the support after the completion of the construction of earth anchor method for protecting support for perforated soil nail in a kind of fill stratum through the invention
The topology view of mechanism.
In figure：
1, steel floral tube；2, earth anchor reinforcing bar；3, fill stratum side slope.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
As shown in Figs. 1-3,1 soil nailing of steel floral tube combines earth anchor method for protecting support in a kind of fill stratum proposed by the present invention, including
Following steps：
First, it carries out steel floral tube 1 to process, forms the structure that can easily enter under the action of pneumatic hammer in fill stratum；At this
In invention, specifically, being to bore extravasating hole on 1 wall of steel floral tube；And penetrated through with circular hole at the top of floral tube, it is inserted into bar connecting head；
And make tapered pipe cap in floral tube bottom；And in the present invention, convenient for safety and ensure under intensity and rational cost, preferably
, it is spaced 300mm on 1 wall of steel floral tube and bores extravasating hole；And with a diameter of 20mm circles of the two-way firing perforation of cutting torch at the top of floral tube
The bar connecting head that a diameter of 16mm and length are 30cm is inserted into hole；And tapered pipe cap is made in floral tube bottom, in this way in air
Can be the entering in fill stratum of being more prone to of steel floral tube 1 under the action of hammer；
Secondly, the position for measuring and steel floral tube 1 being marked to enter fill stratum, and the steel that will be machined according to the position of label
Floral tube 1 is placed in fill stratum side slope 3；In the present invention, due to needing more people to be carried out at the same time operation, can add in steel floral tube 1
It is measured while work and steel floral tube 1 is marked to enter the position of fill stratum, and the steel floral tube 1 machined is placed in fill stratum side slope
In 3；
Specifically, during measuring and mark position, it is divided into the measurement in fill stratum side slope 3 and needs to be placed in steel floral tube
1 position, and above-mentioned position is labeled, certainly when measuring, according to the fill stratum side slope 3 of different gradient, required mark
The position of note differs, and specifically determines according to actual conditions, the present invention no longer further limits this；According to the position of mark
It sets, steel floral tube 1 is placed in by labeling position by pneumatic hammer successively；It needs to ensure that steel floral tube 1 is set during being placed in steel floral tube 1
The uniformity for entering length ensures whole balance to ensure to carry out subsequent operation.
After steel floral tube 1 is placed in fill stratum side slope 3, slurries are poured into steel floral tube 1；Specifically, will be starched by slip casting machine
Hydraulic pressure enters in steel floral tube 1, is poured into fill stratum after so that slurries is passed through steel floral tube 1, and the water that steel floral tube 1 is in the milk in the mud used is grey
Than being 0.4~0.5；Since slip casting machine is accompanied by the generation of pressure, can be after slurries rush across steel floral tube 1, preferably into
Enter to fill stratum side slope 3, pass into so cementing in the slurries and fill stratum of fill stratum, improves fixed intensity；Certainly,
To improve the early strength of floral tube anchoring, in the present invention, it is preferred to the slurries containing non-irrigated strong agent are pressed by steel by slip casting machine
It in floral tube 1, is poured into fill stratum after so that slurries is passed through steel floral tube 1, the ratio of mud that steel floral tube 1 is in the milk in the mud used is 0.4
~0.5.
Earth anchor lacing wire 2 is carried out to be attached with 1 top of steel floral tube machined；Particularly use electric welding machine by earth anchor
Lacing wire 2 is welded with 1 top of steel floral tube；It and in the present invention, will be with the earth anchor lacing wire 2 of a diameter of 16mm and the spray of molten steel using electric welding machine
The reinforcement welding connection at 1 top of pipe；And welding after the completion of make 2 distal end of earth anchor lacing wire extend to outside foundation pit 4m suitable for reading with earth anchor by
Force connects；Earth anchor lacing wire 2 is bonded along ramp portion with face layer mesh sheet, is divided and ground face paste more than the earth anchor lacing wire 2 at the top of side slope
It closes；As shown in figure 3, the connection of earth anchor lacing wire 2 is completed to be attached with 1 top of steel floral tube and ground respectively, to ensure earth anchor lacing wire 2
Fixed intensity, and need to ensure there is no barrier in 2 lower part of earth anchor lacing wire after the setup.
After the completion of earth anchor lacing wire 2 and steel floral tube 1 are fixed, need over the ground anchor be fixed, and carried out after the completion of fixed
Face layer supporting, specifically, needing, in the vertical pore-forming of earth anchor stress point, to inject cement mortar after being inserted into reinforcing bar；After cement mortar condensation
It will be welded with earth anchor lacing wire 2 at the top of reinforcing bar；And in the present invention, the vertical pore-forming of earth anchor stress point, depth of pore forming 1.50m, hole
Diameter 150mm, earth anchor horizontal direction spacing is consistent with the horizontal direction spacing of floral tube, is inserted into a diameter of 20mm reinforcing bars and injects cement
Slurry；It will be welded with earth anchor lacing wire 2 at the top of reinforcing bar after slurry condensation.
As shown in Fig. 2, preferably to be operated, the intensity after the completion of ensureing, in of the invention, preferably in earth anchor lacing wire
After 2 fix, the horizontal component of earth anchor lacing wire 2 is poured with ground；Before pouring, need the slope surface of fill stratum side slope 3 most
It is smooth that amount repaiies slope, and surfacing steel bar net is compiled after the completion of the construction of earth anchor lacing wire 2；Netting size, the present invention are adjusted according to fill stratum soil property
In, netting size is less than 150mm × 150mm；In fill stratum depth bounds when jet face layer, should control surface thickness is
100mm；That is vertical slope surface injection from bottom to top, a jet thickness is preferably 40mm-70mm, second of gunite concrete thickness
The mark position of 100mm.
Technical scheme of the present invention can effectively save cost and time, there is preferable economic benefit.It is better
Illustrate, is further illustrated with specific example：
Foundation depth is 13.0m, and 3 layers of underground, 23 layers on the ground, pattern foundation pit supporting structure form uses soil nailed wall retaining structure.The base
Zhou Changwei 800m are cheated, live dregs thickness is 2.5~3m after excavation.According to design scheme soil nailing under nature terrace 1.5m, water
Flat spacing is 1.5m.Soil-nail parameter is 6m.It is 3200m to need pore-forming soil nailing linear meter(lin.m.) number, according to technical scheme of the present invention and set
Pipe jumbolter hole creating technology compares, and technical scheme of the present invention comprehensive unit price is 50 yuan every meter, and casing jumbolter synthesis is single
Valence is 90 yuan.152000 yuan of expense can be saved, the duration can be saved 4 days.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. perforated soil nail combines earth anchor method for protecting support in a kind of fill stratum, which is characterized in that include the following steps：
S1, steel floral tube processing form the structure that can easily enter under the action of pneumatic hammer in fill stratum；
S2, measurement simultaneously mark steel floral tube to enter the position of fill stratum, and the steel for machining S1 steps according to the position of label
Floral tube is placed in fill stratum side slope；
Slurries are poured into S3, the steel floral tube being placed in fill stratum side slope to S2 steps；
S4, progress earth anchor lacing wire are attached with the steel floral tube top machined in S1 steps；
S5, the earth anchor being connect with steel floral tube in S4 steps is fixed, and carries out face layer supporting after the completion of fixed.
2. method as described in claim 1, which is characterized in that further include：S6 steps：By the horizontal component of earth anchor lacing wire and ground
It is poured.
3. method as described in claim 1, which is characterized in that the S1 steps are：
Extravasating hole is bored on spray of molten steel tube wall；And penetrated through with circular hole at the top of floral tube, it is inserted into bar connecting head；And it is made in floral tube bottom
Tapered pipe cap.
4. method as claimed in claim 3, which is characterized in that the S1 steps are：
It is spaced 300mm on spray of molten steel tube wall and bores extravasating hole；And with a diameter of 20mm circles of the two-way firing perforation of cutting torch at the top of floral tube
The bar connecting head that a diameter of 16mm and length are 30cm is inserted into hole；And make tapered pipe cap in floral tube bottom.
5. method as described in claim 1, which is characterized in that the S2 includes：
S21, the position for needing to be placed in steel floral tube is measured in fill stratum side slope, and above-mentioned position is labeled；
S22, according to the position marked in S21, steel floral tube is placed in by labeling position by pneumatic hammer successively.
6. method as described in claim 1, which is characterized in that the S3 steps are：
Slurries are pressed into steel floral tube by slip casting machine, are poured into fill stratum after so that slurries is passed through steel floral tube, steel floral tube grouting makes
The ratio of mud in mud is 0.4~0.5.
7. method as claimed in claim 6, which is characterized in that the S3 steps are：
The slurries containing non-irrigated strong agent are pressed into steel floral tube by slip casting machine, are poured into fill stratum after so that slurries is passed through steel floral tube,
The ratio of mud in the mud that steel floral tube grouting uses is 0.4~0.5.
8. method as described in claim 1, which is characterized in that the S4 steps are：Using electric welding machine by earth anchor lacing wire and the spray of molten steel
It welds in tube top portion.
9. method as claimed in claim 8, which is characterized in that the S4 steps are：
It will be connect with the reinforcement welding at the top of steel floral tube with the earth anchor lacing wire of a diameter of 16mm using electric welding machine；And it is completed in welding
After so that earth anchor lacing wire distal end is extended to foundation pit 4m suitable for reading is outer to be connect with earth anchor stress point；Earth anchor lacing wire is along ramp portion and face layer net
Piece is bonded, and is bonded with ground more than the earth anchor lacing wire point at the top of side slope.
10. method as described in claim 1, which is characterized in that the S5 steps are：
The vertical pore-forming of earth anchor stress point injects cement mortar after being inserted into reinforcing bar；It will be drawn with earth anchor at the top of reinforcing bar after cement mortar condensation
Muscle welds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810525858.8A CN108677967A (en) | 2018-05-28 | 2018-05-28 | Perforated soil nail combines earth anchor method for protecting support in a kind of fill stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810525858.8A CN108677967A (en) | 2018-05-28 | 2018-05-28 | Perforated soil nail combines earth anchor method for protecting support in a kind of fill stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108677967A true CN108677967A (en) | 2018-10-19 |
Family
ID=63808483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810525858.8A Pending CN108677967A (en) | 2018-05-28 | 2018-05-28 | Perforated soil nail combines earth anchor method for protecting support in a kind of fill stratum |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116028A (en) * | 2011-01-13 | 2011-07-06 | 中建四局第三建筑工程有限公司 | Method and structure for excavating soil in core tube region based on raft pile supporting |
| CN202787275U (en) * | 2012-09-19 | 2013-03-13 | 浙江通达建设集团有限公司 | Tubular soil nailing wall of novel pneumatic impact anchor |
| KR20130113563A (en) * | 2012-04-06 | 2013-10-16 | 주식회사 삼우기초기술 | Compression and distribution type permanent anchor being able to replace the tension member of the free length range |
| CN203383217U (en) * | 2013-07-19 | 2014-01-08 | 北京市勘察设计研究院有限公司 | Prestressed ground anchor device for foundation pit supporting |
| CN103790168A (en) * | 2014-01-17 | 2014-05-14 | 洛阳广鑫建设集团有限公司 | Application method of soil nailing wall in deep foundation pit supporting |
| CN206408614U (en) * | 2017-01-10 | 2017-08-15 | 天津市森源建筑有限公司 | A kind of floral tube soil nailing |
-
2018
- 2018-05-28 CN CN201810525858.8A patent/CN108677967A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116028A (en) * | 2011-01-13 | 2011-07-06 | 中建四局第三建筑工程有限公司 | Method and structure for excavating soil in core tube region based on raft pile supporting |
| KR20130113563A (en) * | 2012-04-06 | 2013-10-16 | 주식회사 삼우기초기술 | Compression and distribution type permanent anchor being able to replace the tension member of the free length range |
| CN202787275U (en) * | 2012-09-19 | 2013-03-13 | 浙江通达建设集团有限公司 | Tubular soil nailing wall of novel pneumatic impact anchor |
| CN203383217U (en) * | 2013-07-19 | 2014-01-08 | 北京市勘察设计研究院有限公司 | Prestressed ground anchor device for foundation pit supporting |
| CN103790168A (en) * | 2014-01-17 | 2014-05-14 | 洛阳广鑫建设集团有限公司 | Application method of soil nailing wall in deep foundation pit supporting |
| CN206408614U (en) * | 2017-01-10 | 2017-08-15 | 天津市森源建筑有限公司 | A kind of floral tube soil nailing |
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| Title |
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| 杨静: "西安浐灞文化中心深基坑土钉墙（花管）支护施工", 《山西建筑》 * |
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Effective date of registration: 20200602 Address after: 100000 Beijing City, Xicheng District Jing Yong 3 Applicant after: CHINA XINXING CONSTRUCTION ENGINEERING Co.,Ltd. Address before: 100079 Beijing City, Fengtai District, Shun eight No. 9 Applicant before: Zheng Lin |
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