CN103911994A - Prestressed anchor construction technology - Google Patents
Prestressed anchor construction technology Download PDFInfo
- Publication number
- CN103911994A CN103911994A CN201410156887.3A CN201410156887A CN103911994A CN 103911994 A CN103911994 A CN 103911994A CN 201410156887 A CN201410156887 A CN 201410156887A CN 103911994 A CN103911994 A CN 103911994A
- Authority
- CN
- China
- Prior art keywords
- construction technology
- prestressed anchor
- grouting
- hole
- steel sleeve
- 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.)
- Pending
Links
Abstract
The invention discloses a prestressed anchor construction technology and belongs to the technical field of supports. The prestressed anchor construction technology includes the steps of 1), drilling a hole and grouting cement slurry into the hole for wall retaining; 2), pulling out a drill pipe and grouting the cement slurry; 3), inserting a steel sleeve in the free section range of an anchor; 4), inserting a anchor body and a grouting pipe in the hole and grouting; 5), pulling out the steel sleeve after grouting is completed; 6), supplementing the slurry; 7), tensioning and locking. The cement slurry is adopted for wall retaining, so that stability of the anchor hole can be greatly improved; the steel sleeve is inserted in the free section range, disturbance to a coating during pulling the sleeve is reduced to the greatest extend, and the prestressed anchor construction technology is quite applicable to construction of clay, floury soil and dense sand layers.
Description
Technical field
The invention belongs to support technology field, be specifically related to a kind of construction technology of prestressed anchor.
Background technology
In existing support technology field, for preventing occurring collapse hole phenomenon in lower rope process, often adopt casing pipe hole forming.When being lowered to anchor pole after pore-forming and anchor pole be arranged side by side two grouting pipes, in slip casting for the first time, extract Grouting Pipe used and steel sleeve; After slurry initial set, by carrying out secondary grouting in another pipeline, fill up pouring into a mould for the first time the space forming after initial set; After secondary grouting, also need mend slurry for the contraction of cement mortar; Mend slurry and finish, after slurry intensity reaches designing requirement, carry out tensioning fixation.
In above-mentioned work progress, when slip casting, steel sleeve is extracted from anchor hole depths, can be to the very large disturbance of soil layer generation around, the stability in hole is difficult to ensure, easily produces the phenomenons such as slurry folder mud, is therefore difficult to ensure workmanship.
Summary of the invention
The object of the invention is to for existing common bolt, a kind of new construction technology is provided.
Based on above-mentioned purpose, the present invention has taked following technical scheme: a kind of prestressed anchor construction technology, comprises the following steps: 1) boring, simultaneously injected water mud off; 2) rod pulling injected water mud simultaneously; 3) within the scope of free section, insert steel sleeve; 4) in hole, implant anchor rod body and Grouting Pipe, and carry out slip casting; 5) slip casting is extracted steel sleeve after finishing; 6) mend slurry; 7) tensioning fixation.
In described step 4), implant secondary grouting pipe, carry out secondary grouting.
Step 2) employing churning reaming.
In step 1), adopt auger boring.
Method provided by the invention, with cement paste dado, can significantly promote the stability of anchor hole; Only within the scope of free segment, insert steel sleeve, the disturbance while having reduced to greatest extent drawing sleeve pipe, coating having been produced is applicable to clay clay, silt, compared with the construction of dense sand stratum very much.
Brief description of the drawings
Fig. 1 is embodiment 1 rear the formed anchoring system schematic diagram of having constructed.
Detailed description of the invention
A kind of prestressed anchor construction technology, comprises the following steps:
1) adopt auger boring, simultaneously injected water mud off;
2) rod pulling injected water mud simultaneously, can carry out churning reaming while needing bellend;
3) within the scope of free section, insert steel sleeve;
4) in hole, implant anchor rod body and secondary grouting pipe, and carry out secondary grouting;
5) slip casting is extracted steel sleeve after finishing;
6), after slurry initial set, mend slurry for the contraction of cement paste;
7) after reaching designing requirement, slurry intensity carries out tensioning fixation.
As shown in Figure 1, in figure, 1 is anchor rod body to the anchoring system forming, and 2 is retaining wall cement paste, and 3 is slip casting anchorage zone.
Claims (4)
1. a prestressed anchor construction technology, is characterized in that, comprises the following steps: 1) boring, simultaneously injected water mud off; 2) rod pulling injected water mud simultaneously; 3) within the scope of free section, insert steel sleeve; 4) in hole, implant anchor rod body and Grouting Pipe, and carry out slip casting; 5) slip casting is extracted steel sleeve after finishing; 6) mend slurry; 7) tensioning fixation.
2. prestressed anchor construction technology as claimed in claim 1, is characterized in that, implants secondary grouting pipe in described step 4), carries out secondary grouting.
3. prestressed anchor construction technology as claimed in claim 1 or 2, is characterized in that step 2) employing churning reaming.
4. prestressed anchor construction technology as claimed in claim 3, is characterized in that, adopts auger boring in step 1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410156887.3A CN103911994A (en) | 2014-04-18 | 2014-04-18 | Prestressed anchor construction technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410156887.3A CN103911994A (en) | 2014-04-18 | 2014-04-18 | Prestressed anchor construction technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103911994A true CN103911994A (en) | 2014-07-09 |
Family
ID=51037965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410156887.3A Pending CN103911994A (en) | 2014-04-18 | 2014-04-18 | Prestressed anchor construction technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103911994A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013141A (en) * | 2016-07-15 | 2016-10-12 | 周同和 | Polyurethane anchor rod and construction process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330431A (en) * | 2011-06-16 | 2012-01-25 | 兰州理工大学 | Flexible support structure of pre-stress anchor rod for lattice type frame and construction method of flexible support structure |
| CN102704478A (en) * | 2012-06-08 | 2012-10-03 | 黄水森 | Building anchor rod construction technology |
| CN103088819A (en) * | 2013-02-22 | 2013-05-08 | 北京市公路桥梁建设集团有限公司 | Pre-stressed anchor cable construction method |
| CN103266609A (en) * | 2013-04-25 | 2013-08-28 | 中天建设集团有限公司 | Process for constructing prestressed anchor rod in deep foundation pit supporting system |
-
2014
- 2014-04-18 CN CN201410156887.3A patent/CN103911994A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330431A (en) * | 2011-06-16 | 2012-01-25 | 兰州理工大学 | Flexible support structure of pre-stress anchor rod for lattice type frame and construction method of flexible support structure |
| CN102704478A (en) * | 2012-06-08 | 2012-10-03 | 黄水森 | Building anchor rod construction technology |
| CN103088819A (en) * | 2013-02-22 | 2013-05-08 | 北京市公路桥梁建设集团有限公司 | Pre-stressed anchor cable construction method |
| CN103266609A (en) * | 2013-04-25 | 2013-08-28 | 中天建设集团有限公司 | Process for constructing prestressed anchor rod in deep foundation pit supporting system |
Non-Patent Citations (1)
| Title |
|---|
| 樊朝金等: "无嵌固支护桩在深基坑支护工程中的运用", 《探矿工程（岩土钻掘工程）》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013141A (en) * | 2016-07-15 | 2016-10-12 | 周同和 | Polyurethane anchor rod and construction process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104452749B (en) | The constructional method of a kind of reinforced concrete cast-in-situ pile tube | |
| CN105569560B (en) | A full set of tubular type long auger stake machine and the method for utilizing the ram machine construction | |
| CN103541352B (en) | A kind of at ground, sandy soil stratum major diameter Vertical spots underground continuous construction method | |
| CN104631438B (en) | Long auger guncreting uplift pile construction method | |
| CN103911993B (en) | A kind of PHA anchor pole and construction method thereof | |
| CN108265706A (en) | A kind of engineering pile and pile-formation process in solution cavity geology | |
| CN104762981A (en) | Hole forming method of precipitation well | |
| CN107653878A (en) | Cast-in-situ bored pile is reusable to be longitudinally separated formula steel pile casting construction | |
| CN103031847A (en) | Reducing overlap joint combined type orifice pipe grouting method | |
| CN105297710A (en) | High-pressure-jetting cement soil twist drill and reamed reinforced concrete grouting combined pile and manufacturing method | |
| JP2013164103A (en) | Embedded pipe structure and method for constructing embedded pipe structure | |
| CN107100160A (en) | A kind of construction technology for lower storage reservoir check dam vibro-replacement stone column | |
| CN110080779A (en) | Tunnel tunnel bottom karst cave treatment construction method | |
| CN104196488B (en) | Underwater exploration hole hole-sealing technology | |
| CN206942786U (en) | A kind of advanced pre-add fixing structure of high-moisture percentage loess tunnel | |
| CN103924592B (en) | A kind of pressure-type PHA anchor pole and construction method thereof | |
| CN104196021A (en) | Uplift pile structure and construction method thereof | |
| CN102535462A (en) | Method for constructing anchor cable on sand layer | |
| CN103911994A (en) | Prestressed anchor construction technology | |
| CN102979105A (en) | Underground water control method of wellhole grouting and seepage insulation | |
| CN205713982U (en) | A kind of pile foundation construction drilling equipment being applicable to karst area | |
| CN206916733U (en) | The diaphram wall reserved grouting tubular construction of steel reinforcement cage | |
| CN102296597A (en) | Construction method of steel pipe piles in shallow soil layer | |
| CN203834479U (en) | Pressure type PHA bolt | |
| CN104727305B (en) | Boring high-pressure slip-casting uplift pile construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140709 |