CN103628478A - Externally threaded recoverable composite bolt and construction method thereof - Google Patents
Externally threaded recoverable composite bolt and construction method thereof Download PDFInfo
- Publication number
- CN103628478A CN103628478A CN201310673789.2A CN201310673789A CN103628478A CN 103628478 A CN103628478 A CN 103628478A CN 201310673789 A CN201310673789 A CN 201310673789A CN 103628478 A CN103628478 A CN 103628478A
- Authority
- CN
- China
- Prior art keywords
- male
- pipe
- screw thread
- external screw
- bolt
- 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
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to an externally threaded recoverable composite bolt and a construction method thereof in the field of anchoring in geotechnical engineering. The bolt comprises an externally threaded tube (1) and a hot-melt force transfer belt (2), wherein the externally threaded tube (1) is of a tubular structure, the external surface of which is threaded, and the hot-melt force transfer belt (2) is of a structure, which wraps the externally threaded tube (1) at the anchoring section and the connection strength of which can be remarkably decreased as temperature rises; during construction, the bolt can be recovered by sufficiently utilizing the hollow structure of the externally threaded tube (1), and meanwhile, the bolt can be conveniently temporarily fixed and locked at full length by utilizing the external thread of the externally threaded tube (1). The invention greatly increases the installing and recovering efficiency and bearing capability of the recoverable bolt, the manufacturing cost is low, the environmental protection benefit is outstanding, the problem that construction bolts in cities exceed the boundary lines of lands underground is successfully solved, and the bolt can be widely applied in the field of the construction of foundation pit supports and the like.
Description
Technical field
The present invention relates to the geotechnical anchor engineering field in field of civil engineering.
Background technology
Along with engineering construction developing rapidly of underground space development particularly, in the engineering constructions such as bracing of foundation pit, slope retaining, the demand of anchor pole is increased day by day, and owing to often leaving over the body of rod in adjacent domain after anchor pole use, cause contiguous place underground space development difficulty at present, limited to a great extent the application of anchor pole.In order to realize the recovery of anchor bar body, existing callable anchor pole mainly contains the construction technologies such as the various anchor poles that connect by mechanical whorl, U-shaped detachable anchor.The nearest documents of callable anchor pole is Chinese patent 01234117.7, this technology and other recoverable anchor rod technology are all the link techniques that adopt screw thread-like, mechanical movement by the body of rod makes to deviate from the never recyclable body of the callable beaer of anchor pole after use, thereby reach the object that reclaims the body of rod, there is following defect in this technology: one, prior art is by mechanical connection manner by recyclable body and can not connect by recovery body, and manufacture craft is more complicated, and cost is high; They are two years old, after anchor bolt construction, because anchor pole is difficult to keep original linear state in drilling construction, deadweight and loading process, thereby the motion modes such as rotation during anchor recovering are difficult to realize, engineering experience confirms, when anchor pole is longer (as the soil nailing in current soil nailing wall foundation pit support), be difficult to realize the object reclaiming, so such callable anchor pole is difficult to wide popularization and application in field of civil engineering.Equations of The Second Kind recoverable anchor rod is U-shaped detachable anchor, this technology is that high strength steel strand is curved to U-shaped, then U-shaped steel strand is positioned in armature boring, passes through to discharge one end of U-shaped steel strand after being used to complete, and apply pulling force at the other end, steel strand are pulled out to recovery by force.The shortcoming of this technology is: the first, and in use, the suffered distributed force of steel strand direction along the line is little and inhomogeneous, anchor pole low bearing capacity for this technology; The second, during recovery, pulling force is large, and recovery difficult is large; The 3rd, this technique building technology is complicated, and cost is high.Due to above defect, though this technology occurred for many years, be still difficult to so far promote.I have proposed before this, and callable end holds formula anchor pole technology, callable end holds callable anchor pole form and the construction methods such as friction rock bolt, callable Composite Bolt and construction method thereof etc., design and construction practice through a large amount of recoverable anchor rods, I designed cost lower, reclaim the recyclable Composite Bolt of external screw thread more easily, and the construction method of this kind of anchor pole has been proposed.
The content of invention
First object of the present invention is to provide a kind of external screw thread recyclable Composite Bolt, and this external screw thread recyclable Composite Bolt energy Fast Installation and recovery are safe and reliable, economic environmental protection, and easy construction, cost is low.
The recyclable Composite Bolt of this external screw thread comprises male-pipe, hot melt load transfering strip two parts, male-pipe is wherein for being firmly connected with the anchoring body in Rock And Soil or Rock And Soil the structure of transmitting anchor pole anti-pulling capacity by hot melt load transfering strip, and male-pipe is that external surface is screw-shaped tubular structure, hot melt load transfering strip at anchoring section, be wrapped in male-pipe periphery and bonding strength can be with the temperature significantly reduced structure that raises.
In the recyclable Composite Bolt of above-mentioned external screw thread, above-mentioned male-pipe can be comprised of more piece, and in joint, tubulose spigot is set.
In the recyclable Composite Bolt of above-mentioned external screw thread, the external surface of above-mentioned hot melt load transfering strip can be made scraggly structure.
Second object of the present invention is to provide a kind of external screw thread recyclable coupled pole construction method, comprises the steps:
A) determine anchor pole position;
B) with hot melt load transfering strip, the anchoring section of male-pipe is partly wrapped up, manufacture the recyclable Composite Bolt of external screw thread;
C) by above-mentioned steps b) in the recyclable Composite Bolt of external screw thread manufactured insert the anchoring body in Rock And Soil or Rock And Soil;
D) locking external screw thread recoverable anchor rod, enters the anchor pole operating period;
E) after anchor pole is used and to finish, remove above-mentioned steps d) in locking to the recyclable Composite Bolt of external screw thread;
F) hollow position by the recyclable Composite Bolt of external screw thread heats male-pipe, and the bonding strength between hot melt load transfering strip and male-pipe is reduced;
G) revealed section of the temporary fixed male-pipe of nut is installed in the outside of male-pipe, is extracted piecemeal male-pipe, complete the installation and recovery construction of the recyclable Composite Bolt of external screw thread.
The recyclable Composite Bolt of external screw thread of the present invention and construction method thereof are when improving anchor pole anti-pulling capacity, having realized the convenient of anchor member reclaims and anchoring, increased substantially the rate of recovery of anchor pole, transportation, installation and recovery construction rapid and convenient, cost is low, has reclaimed rear residue intensity low, and environmental benefit is outstanding, successfully solved the underground land red-line problem that surmounts of anchor pole of constructing in city, extensively model is applied to the engineering fields such as bracing of foundation pit.
Accompanying drawing explanation
Fig. 1 is one embodiment of the present of invention recyclable Composite Bolt vertical section structure of a kind of external screw thread organigrams used.
Fig. 2 is one embodiment of the present of invention recyclable Composite Bolt cross-sectional structure of a kind of external screw thread organigrams used.
The specific embodiment
As an embodiment as shown in Figures 1 and 2 of the present invention, main purpose is to introduce Structural Tectonics, operating principle and installation thereof and the recovery construction method of the recyclable Composite Bolt of external screw thread.As shown in Figures 1 and 2, the recyclable Composite Bolt of external screw thread of the present invention comprises male-pipe (1), hot melt load transfering strip (2) two parts, male-pipe wherein (1) is for being firmly connected with the anchoring body in Rock And Soil or Rock And Soil the structure of transmitting anchor pole anti-pulling capacity by hot melt load transfering strip (2), and male-pipe (1) is that external surface is screw-shaped tubular structure, hot melt load transfering strip (2) at anchoring section, be wrapped in male-pipe (1) peripheral and bonding strength can be with the temperature significantly reduced structure that raises.Male-pipe (1) is isolated by hot melt load transfering strip (2) and the anchoring body in Rock And Soil or Rock And Soil, and the bonding strength of hot melt load transfering strip (2) can raise and significantly reduce with temperature, for the recovery of male-pipe (1) is laid a good foundation.In the present embodiment, can select the materials such as epoxy resin, epoxy resin mortar, sulphide mastic or other ester class to make hot melt load transfering strip (2), and can make the scraggly structures such as indentation, screw thread at the external surface of hot melt load transfering strip (2), to increase the bonding strength between the reinforcing body in hot melt load transfering strip (2) and Rock And Soil or ground.In implementation process, male-pipe (1) can be an integral body, also can be interconnected and be formed by more piece.When male-pipe (1) is comprised of more piece, should between adjacent two joints, tubulose spigot (3) be set, tubulose spigot (3) can keep male-pipe (1) inner side total length to connect.Generally, the external diameter of tubulose spigot (3) should not significantly be greater than the external diameter of male-pipe (1), can significantly reduce the material usage of hot melt load transfering strip (2) like this.Being connected can adopt between tubulose spigot (3) in the present embodiment and male-pipe (1) is threaded, at the two ends of tubulose spigot (3), external screw thread is set, joint at male-pipe (1) arranges the internal thread matching, utilize tubulose spigot that two adjacent joint male-pipes are connected, and can keep joint to have hollow channel.In the present embodiment, hot melt load transfering strip (2) is to guarantee one of callable key member of anchor pole, when reclaiming, can by heating male-pipe (1), to hot melt load transfering strip (2), heat by the hollow part of male-pipe (1), adhesion strength between hot melt load transfering strip (2) and male-pipe (1) is significantly reduced, thereby can easily male-pipe (1) be reclaimed.In the present embodiment, the external surface of male-pipe (1) is designed to shape of threads, main purpose is that the nut that all can install by the outside at male-pipe (1) along the total length direction of male-pipe (1) when reclaiming is temporary fixed by male-pipe (1), be convenient to extracting of male-pipe, greatly improved recovery speed; The screw thread that can pass through the setting of male-pipe (1) external surface simultaneously improves the bonding strength between male-pipe (1) and hot melt load transfering strip (2), also helps the anchoring construction of anchor pole, further reduces anchor pole cost.The installation of the recyclable Composite Bolt of the present embodiment following part article external screw thread of the present invention and recovery construction method and operating principle.First according to designing requirement, determine the plane of anchor pole and vertically arrange, completing the first step of the present embodiment, entering second step.In this step, the hot melt materials such as epoxy resin or epoxy resin mortar can be put in mould, and male-pipe (1) is placed in one, after the hot melt materials such as epoxy resin or epoxy resin mortar are solidified male-pipe (1) parcel, taken out, just completed the manufacture of the recyclable Composite Bolt of external screw thread.In this step, male-pipe (1) can be divided into some joints, the desirable 1～2m of merogenesis length, can connect by tubulose spigot (3) is set between each joint, completes the second step of the present embodiment, enters the 3rd step.In this step, the recyclable Composite Bolt of the external screw thread of manufacturing in above-mentioned second step is inserted to the anchoring body in Rock And Soil or Rock And Soil, anchoring body wherein can be cement mortar, cement paste, cement mixing method, rotary churning pile etc., in anchoring section position, use external surface to bond the male-pipe (1) of hot melt load transfering strip (2), in free segment position, can directly use male-pipe (1).The 3rd step that completes the present embodiment, enters the 4th step.In this step, by anchor pole with by stake or the collar tie beam etc. of anchoring, be firmly connected, just can utilize the anti-pulling capacity of anchor pole, enter the operational phase of anchor pole, because male-pipe (1) external surface has screw thread, so can easily anchor pole be locked by nut is set.The 4th step that completes the present embodiment, enters the 5th step.In this step, after anchor pole is used to complete, as pit backfill, support replacement such as completes at the operating mode, remove anchor pole in the 4th step with by being connected of anchoring object, complete the 5th step of the present embodiment, enter the 6th step.In this step, by the hollow channel in the male-pipe (1) forming in the 3rd step in the present embodiment, the hot melt load transfering strip (2) of anchoring section is heated and makes hot melt load transfering strip (2) fusing or softening, thereby reduce the bonding strength between hot melt load transfering strip (2) and male-pipe (1).The 6th step that completes the present embodiment, enters the 7th step.In this step, after bonding strength between hot melt load transfering strip (2) and male-pipe (1) reduces, male-pipe (1) is extracted, when extracting, can utilize the screw thread of male-pipe (1) external surface, at the upper nut of installing of male-pipe (1), can male-pipe is temporary fixed piecemeal, thereby be convenient to extract reclaim, construct.And can extract and be arranged at wherein other members that need reclaim.Complete the 7th step of the present invention.Thereby complete the installation and recovery construction of the recyclable Composite Bolt of male-pipe of the present invention.
This patent includes but not limited to other construction methods of the alternative use of professional person in this area.
Claims (4)
1. the recyclable Composite Bolt of external screw thread, the recyclable Composite Bolt of this external screw thread comprises male-pipe (1), hot melt load transfering strip (2) two parts, male-pipe wherein (1) is for being firmly connected with the anchoring body in Rock And Soil or Rock And Soil the structure of transmitting anchor pole anti-pulling capacity by hot melt load transfering strip (2), and male-pipe (1) is that external surface is screw-shaped tubular structure, hot melt load transfering strip (2) at anchoring section, be wrapped in male-pipe (1) peripheral and bonding strength can be with the temperature significantly reduced structure that raises.
2. the recyclable Composite Bolt of external screw thread according to claim 1, is characterized in that above-mentioned male-pipe (1) is comprised of more piece, and tubulose spigot (3) is set in joint.
3. the recyclable Composite Bolt of external screw thread according to claim 1, is characterized in that the external surface of above-mentioned hot melt load transfering strip (2) can be made scraggly structure.
4. the recyclable coupled pole construction method of external screw thread, comprises the steps:
A) determine anchor pole position;
B) with hot melt load transfering strip (2), the anchoring section of male-pipe (1) is partly wrapped up, manufacture the recyclable Composite Bolt of external screw thread;
C) by above-mentioned steps b) in the recyclable Composite Bolt of external screw thread manufactured insert the anchoring body in Rock And Soil or Rock And Soil;
D) locking external screw thread recoverable anchor rod, enters the anchor pole operating period;
E) after anchor pole is used and to finish, remove above-mentioned steps d) in locking to the recyclable Composite Bolt of external screw thread;
F) hollow position by the recyclable Composite Bolt of external screw thread heats male-pipe (1), and the bonding strength between hot melt load transfering strip (2) and male-pipe (1) is reduced;
G) revealed section of the temporary fixed male-pipe of nut (1) is installed in the outside of male-pipe (1), is extracted piecemeal male-pipe (1), complete the installation and recovery construction of the recyclable Composite Bolt of external screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310673789.2A CN103628478A (en) | 2013-12-12 | 2013-12-12 | Externally threaded recoverable composite bolt and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310673789.2A CN103628478A (en) | 2013-12-12 | 2013-12-12 | Externally threaded recoverable composite bolt and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103628478A true CN103628478A (en) | 2014-03-12 |
Family
ID=50209905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310673789.2A Pending CN103628478A (en) | 2013-12-12 | 2013-12-12 | Externally threaded recoverable composite bolt and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103628478A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005064088A1 (en) * | 2003-12-27 | 2005-07-14 | Young-Geun Choi | Round rod-type and bundle-type soil nails |
| CN101994316A (en) * | 2010-10-15 | 2011-03-30 | 张继红 | Recyclable composite anchor rod and construction method thereof |
| CN103397633A (en) * | 2013-07-26 | 2013-11-20 | 张继红 | Self-drilling RCA (recycling composite anchor) rod and construction method thereof |
| CN203639908U (en) * | 2013-12-12 | 2014-06-11 | 张继红 | Recyclable external-thread recombination anchor rod |
-
2013
- 2013-12-12 CN CN201310673789.2A patent/CN103628478A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005064088A1 (en) * | 2003-12-27 | 2005-07-14 | Young-Geun Choi | Round rod-type and bundle-type soil nails |
| CN101994316A (en) * | 2010-10-15 | 2011-03-30 | 张继红 | Recyclable composite anchor rod and construction method thereof |
| CN103397633A (en) * | 2013-07-26 | 2013-11-20 | 张继红 | Self-drilling RCA (recycling composite anchor) rod and construction method thereof |
| CN203639908U (en) * | 2013-12-12 | 2014-06-11 | 张继红 | Recyclable external-thread recombination anchor rod |
Non-Patent Citations (1)
| Title |
|---|
| 秦富友等: "光管和外螺纹管换热器的换热性能比较", 《化学工程与装备》, no. 1, 31 January 2008 (2008-01-31), pages 4 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101994316A (en) | Recyclable composite anchor rod and construction method thereof | |
| CN206722878U (en) | A kind of mining light-duty filling counterfort | |
| CN102127911A (en) | Recoverable composite anchor rod and construction method thereof | |
| CN203080518U (en) | Self-drilling type recoverable anchor wire | |
| CN105201530A (en) | Repairing and strengthening method for large cracks on rock tunnel lining | |
| CN103397633A (en) | Self-drilling RCA (recycling composite anchor) rod and construction method thereof | |
| CN203049591U (en) | Reinforced structure of fractured rock mass and high oriented side slope | |
| CN106760054B (en) | Prefabricated reinforced concrete shear wall | |
| CN106836179A (en) | Vertical strengthening ribs enhanced bellows grouting pile and construction method | |
| CN103122633B (en) | Electric-melting pressure-type recoverable anchor rod construction method | |
| CN104612696A (en) | Construction method for underground excavated large-section subway station to pass through viaduct in fine sand layer based on pioneer heading-column method | |
| CN107178100A (en) | A kind of soft soil foundation basement anti-floating system and its construction technology | |
| CN101949151A (en) | Recyclable locking anchor rod and construction method thereof | |
| CN105951872A (en) | Drainage pipeline foundation in soft soil foundation and construction method of drainage pipeline foundation | |
| CN103911993B (en) | A kind of PHA anchor pole and construction method thereof | |
| CN203639908U (en) | Recyclable external-thread recombination anchor rod | |
| CN203475427U (en) | Self-drilling type recoverable anchor rod | |
| CN102261069A (en) | Recyclable anchor rod construction method, and cavity rod body and high-pressure heater used by same | |
| CN109681212B (en) | Excavation construction method of small-section loess tunnel | |
| CN201835279U (en) | Recyclable composite anchor rod | |
| CN106480880B (en) | Recoverable soil nailing and the construction method for using recoverable soil nail | |
| CN102235004A (en) | Recyclable end-bearing friction-type anchor rod and constructing method thereof | |
| CN103628478A (en) | Externally threaded recoverable composite bolt and construction method thereof | |
| CN201801863U (en) | Recyclable locking type anchor | |
| CN108825285A (en) | The detachable anchor supporting construction of roadway support |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | 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: 20140312 |