CN101994316A - Recyclable composite anchor rod and construction method thereof - Google Patents
Recyclable composite anchor rod and construction method thereof Download PDFInfo
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- CN101994316A CN101994316A CN 201010508643 CN201010508643A CN101994316A CN 101994316 A CN101994316 A CN 101994316A CN 201010508643 CN201010508643 CN 201010508643 CN 201010508643 A CN201010508643 A CN 201010508643A CN 101994316 A CN101994316 A CN 101994316A
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- steel strand
- anchor pole
- hot melt
- reinforcing bar
- composite bolt
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Abstract
The invention relates to a recyclable composite anchor rod and a construction method thereof in the field of anchoring in geotechnical engineering. The recyclable composite anchor rod comprises a hot-melt force transmission belt (2), a steel bar or a steel strand (3), a hollow channel (4) and a cement anchored body (1), wherein the cement anchored body (1) is a part connected with a rock-soil body (5) to provide uplift-resistance bearing capacity; the transfer of the uplift-resistance bearing capacity of the anchor rod is realized through the holding function of the hot-melt force transmission belt (2); and the recycle of the anchor rod is realized through melting. The invention realizes the convenient recycle of the main stressed component of the anchor rod while enhancing the uplift-resistance bearing capacity of the anchor rod, has the advantages of high recycle rate, convenient recycle construction, low manufacturing cost and prominent environmental benefit, successfully solves the problem that the construction anchor rod exceeds the land use red line under the ground in the city, can be widely applied to the field of engineering such as bracing of foundation pit and the like, and can be popularized and used in the soft soil zones.
Description
Technical field
The present invention relates to field of civil engineering, particularly design the geotechnical anchor engineering field.
Background technology
Along with engineering construction developing rapidly of underground space development particularly, demand to anchor pole in engineering constructions such as bracing of foundation pit, slope retaining increases day by day, and cause contiguous place underground space development difficulty owing to often leave over the body of rod after the anchor pole use at present in adjacent domain, limited the application of anchor pole to a great extent.In order to realize the recovery of anchor bar body, existing callable anchor pole mainly contains construction technologies such as various anchor poles by the mechanical whorl connection, the detachable anchor pole of U type.The nearest documents of callable anchor pole is a Chinese patent 01234117.7, this technology and other recoverable anchor rod technology all are to adopt the link technique of screw thread-like, by deviating from the never recyclable body of the callable beaer of anchor pole after the feasible use of the mechanical movement of the body of rod, thereby reach the purpose that reclaims the body of rod, there is following defective in this technology: one, with recyclable body and can not recovery body connect, manufacture craft is complicated, the cost height by mechanical connection manner for prior art; They are two years old, behind the 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 of anchor pole when reclaiming is difficult to realize, engineering experience confirms, when anchor pole is longer (as the soil nailing in the present soil nailing wall foundation pit support), be difficult to realize the purpose that reclaims, so such callable anchor pole is difficult to wide popularization and application in field of civil engineering.The second class recoverable anchor rod is the detachable anchor pole of U-shaped, this technology is that high strength steel strand is curved U-shaped, then U shaped steel twisted wire is positioned in the armature boring, is used to complete the back by discharging an end of U-shaped steel strand, and apply pulling force at the other end, steel strand are pulled out recovery by force.The shortcoming of this technology is: the first, this technology in use, the suffered distributed force of steel strand direction along the line is little and inhomogeneous; The second, pulling force is big during recovery, and recovery difficult is big; The 3rd, this technique building technology complexity, cost height.Because above defective though this technology has occurred for many years, still is difficult to promote so far.I have proposed before this, and callable end holds formula anchor pole technology, callable end holds callable anchor pole form and job practicess such as friction rock bolt, callable locking-type anchor pole and job practices thereof etc., improve the reliability that anchor pole reclaims in order to advance one one, simplify anchor rod construction process, I propose callable Composite Bolt and job practices thereof.
The content of invention
First purpose of the present invention is to provide a kind of callable Composite Bolt, this callable Composite Bolt can be given full play to the potentiality of geotechnical body, after being used to complete, the body of rod can be reclaimed, avoid the residual influence of the body of rod to the later stage underground space development, enlarged the range of application of anchor pole, safe and reliable, economic environmental protection, easy construction.
This callable Composite Bolt comprises the hot melt load transfering strip, reinforcing bar or steel strand, hollow channel and cement-soil anchoring body four parts are formed, cement-soil anchoring body wherein is for being connected the position that anti-pulling capacity is provided with geotechnical body, reinforcing bar or steel strand are for firmly being connected the structure of transmitting the anchor pole anti-pulling capacity by hot melt load transfering strip and cement-soil anchoring body, the hot melt load transfering strip for be wrapped in reinforcing bar or steel strand periphery at anchoring section and bonding strength can be with the temperature significantly reduced structure that raises, hollow channel is to be arranged at hot melt load transfering strip inside along duct that reinforcing bar or steel strand direction connect.
In above-mentioned callable Composite Bolt, the external surface of above-mentioned hot melt load transfering strip can be made scraggly structure.
In above-mentioned callable Composite Bolt, the firm linkage section of above-mentioned reinforcing bar or steel strand and hot melt load transfering strip can be arranged on the anchor pole diverse location, and smooth be connected or low-intensity connects is set between the reinforcing bar of non-firm linkage section or steel strand and hot melt load transfering strip.
Second purpose of the present invention is to provide a kind of callable Composite Bolt job practices, this callable Composite Bolt job practices can realize the installation of above-mentioned callable Composite Bolt smoothly and reclaim construction, and can provide very big anti-pulling capacity, save the geotechnical anchor engineering cost significantly, easy construction, reliable in quality.
This callable Composite Bolt job practices may further comprise the steps:
A) determine the anchor pole position;
B) with the hot melt load transfering strip reinforcing bar or steel strand are wrapped up in anchoring section position and cement-soil anchoring body contact position, and hollow channel is set, make the callable Composite Bolt body of rod;
C) at anchor pole position construction cement-soil anchoring body;
D) at above-mentioned steps c) in the cement-soil anchoring body of construction solidify before with above-mentioned steps b) in the Composite Bolt body of rod made insert wherein;
E) the locking anchor pole enters the anchor pole operating period;
F) treat that anchor pole use to finish after, remove above-mentioned steps e) in to the locking of anchor pole;
G) by above-mentioned steps b) the middle hollow channel of making, to callable Composite Bolt heating, the bonding strength between hot melt load transfering strip and reinforcing bar or the steel strand is reduced;
H) extract reinforcing bar or steel strand and be arranged at other recyclable members in the callable Composite Bolt, the installation of finishing callable Composite Bolt with reclaim construction.
Callable Composite Bolt of the present invention and job practices thereof are when improving the anchor pole anti-pulling capacity, realized that the convenient of anchor member reclaims, increased substantially the rate of recovery of anchor pole, install and reclaim easy construction, cost is low, and residue intensity was low after recovery was finished, and environmental benefit is outstanding, successfully solved the underground land used red line problem that surmounts of construction anchor pole in the city, extensively model is applied to engineering fields such as bracing of foundation pit.
Description of drawings
Fig. 1 is the used callable Composite Bolt vertical section structure organigrams of one embodiment of the present of invention.
Fig. 2 is the used callable Composite Bolt cross-sectional structure organigrams of one embodiment of the present of invention.
The specific embodiment
As a Fig. 1 and an embodiment shown in Figure 2, main purpose is to introduce structure construction, operating principle and installation thereof and the recovery job practices of callable Composite Bolt as of the present invention.As Fig. 1 and shown in Figure 2, callable Composite Bolt of the present invention comprises hot melt load transfering strip (2), reinforcing bar or steel strand (3), hollow channel (4) is formed with cement-soil anchoring body (1) four part, cement-soil anchoring body (1) wherein is for being connected the position that anti-pulling capacity is provided with geotechnical body (5), reinforcing bar or steel strand (3) firmly are connected transmission anchor pole anti-pulling capacity by hot melt load transfering strip (2) and cement-soil anchoring body (1), hot melt load transfering strip (2) bonds in reinforcing bar or steel strand (3) periphery at anchoring section, cut off direct connection of reinforcing bar or steel strand (3) and cement-soil anchoring body (1), reinforcing bar or steel strand (3) are connected with cement-soil anchoring body (1) by hot melt load transfering strip (2), can enlarge the contact area of primary structure member reinforcing bar or steel strand (3) and cement-soil anchoring body (1) like this, improve bonding strength, and the bonding strength of hot melt load transfering strip (2) can raise and significantly reduction with temperature, is easy to realize the recovery of reinforcing bar or steel strand (3).In the present embodiment, can with between each root reinforcing bar or steel strand (3) and the hot melt load transfering strip (2) be set firm the connection or smooth connection in different anchor pole positions, just can be as the pressure dispersing type anchor pole, to improve the anti-pulling capacity of long anchor pole.In the present embodiment, can select for use epoxy resin, epoxy resin mortar or other Ester to make hot melt load transfering strip (2), and can make scraggly structures such as indentation, screw thread at the external surface of hot melt load transfering strip (2), to increase the bonding strength between hot melt load transfering strip (2) and the cement-soil anchoring body (1).Hollow channel (4) is arranged at hot melt load transfering strip (2) inside, connect along reinforcing bar or steel strand (3) direction, purpose is to be convenient to heat hot fusibleness load transfering strip (2) when reclaiming, can reserve hollow channel (4) by when the body of rod is made, burying tubular structures such as steel pipe, plastic pipe underground, also can when hot melt load transfering strip (2) is made, it be made as hollow-core construction.Present embodiment is mainly introduced the installation and recovery job practices and operating principle of callable Composite Bolt of the present invention with the lower part.At first determine the plane and vertical layout of anchor pole, finish the first step of callable Composite Bolt job practices of the present invention, entered for second step according to designing requirement.In this step, can utilize heating tank, hot melt materials such as epoxy resin or epoxy resin mortar are put in wherein, after the above-mentioned substance fusing, reinforcing bar that can binding is fixing or steel strand (3) are placed in one together with the mould (being tubular element) of hollow channel (4), treat just to have finished the manufacturing of the callable Composite Bolt body of rod with after the cooling of hot melt materials such as epoxy resin or epoxy resin mortar it being taken out.Finish second step of the present invention, entered for the 3rd step.In this step, can construct cement mixing method or high-pressure rotary jet grouting pile in the anchor pole position as cement-soil anchoring body (1).Finish the 3rd step of the present invention, entered for the 4th step.In this step, will get final product in the Composite Bolt body of rod insertion cement-soil anchoring body of making in above-mentioned second step (1) before the cement-soil anchoring body (1) of construction solidifies in the above-mentioned the 3rd goes on foot.Finish the 4th step of the present invention, entered for the 5th step.In this step, with anchor pole with firmly be connected by the stake or the collar tie beam etc. of anchoring, just can utilize the anti-pulling capacity of anchor pole, enter the operational phase of anchor pole.Finish the 5th step of the present invention, entered for the 6th step.In this step, treat that anchor pole is used to complete after, as pit backfill, support replacement such as finishes at operating mode, remove anchor pole in the 5th step with by being connected of anchoring object, finish the 6th step of the present invention, entered for the 7th step.In this step, by the hollow channel of making in above-mentioned second step (4), can in hollow channel (4), inject high temperature objects such as steam, or in hollow channel (4), insert heating wire and heat, to callable Composite Bolt heating, make hot melt load transfering strip (2) fusing or softening, thereby reduce the bonding strength between hot melt load transfering strip (2) and reinforcing bar or the steel strand (3).Finish the 7th step of the present invention, entered for the 8th step.In this step, before hot melt load transfering strip (2) cooling, reinforcing bar or steel strand (3) are extracted out, and can be extracted out other members that need reclaim such as pipeline that are arranged at wherein.Finish the 8th step of the present invention.Thereby finish the installation and recovery construction of callable Composite Bolt of the present invention.
This patent includes but not limited to other job practicess of the alternative use of professional person in this area.
Claims (4)
1. callable Composite Bolt, it is characterized in that this callable Composite Bolt comprises hot melt load transfering strip (2), reinforcing bar or steel strand (3), hollow channel (4) is formed with cement-soil anchoring body (1) four part, cement-soil anchoring body (1) wherein is for being connected the position that anti-pulling capacity is provided with geotechnical body (5), reinforcing bar or steel strand (3) are for firmly being connected the structure of transmitting the anchor pole anti-pulling capacity by hot melt load transfering strip (2) and cement-soil anchoring body (1), hot melt load transfering strip (2) for be wrapped at anchoring section reinforcing bar or steel strand (3) peripheral and bonding strength can be with the temperature significantly reduced structure that raises, hollow channel (4) is for being arranged at the inner duct that connects along reinforcing bar or steel strand (3) direction of hot melt load transfering strip (2).
2. callable Composite Bolt 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.
3. callable Composite Bolt according to claim 1, the firm linkage section that it is characterized in that above-mentioned reinforcing bar or steel strand (3) and hot melt load transfering strip (2) can be arranged on the anchor pole diverse location, between the reinforcing bar of non-firm linkage section or steel strand (3) and hot melt load transfering strip (2) is set smooth the connection or the low-intensity connection.
4. callable Composite Bolt job practices is characterized in that this callable Composite Bolt job practices may further comprise the steps:
A) determine the anchor pole position;
B) with hot melt load transfering strip (2) reinforcing bar or steel strand (3) are wrapped up in anchoring section position and cement-soil anchoring body (1) contact position, and hollow channel (4) is set, make the callable Composite Bolt body of rod;
C) at anchor pole position construction cement-soil anchoring body (1);
D) at above-mentioned steps c) in the cement-soil anchoring body (1) of construction solidify before with above-mentioned steps b) in the Composite Bolt body of rod made insert wherein;
E) the locking anchor pole enters the anchor pole operating period;
F) treat that anchor pole use to finish after, remove above-mentioned steps e) in to the locking of anchor pole;
G) by above-mentioned steps b) the middle hollow channel of making (4), to callable Composite Bolt heating, the bonding strength between hot melt load transfering strip (2) and reinforcing bar or the steel strand (3) is reduced;
H) extract reinforcing bar or steel strand (3) and be arranged at other recyclable members in the callable Composite Bolt, the installation of finishing callable Composite Bolt with reclaim construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010508643 CN101994316A (en) | 2010-10-15 | 2010-10-15 | Recyclable composite anchor rod and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010508643 CN101994316A (en) | 2010-10-15 | 2010-10-15 | Recyclable composite anchor rod and construction method thereof |
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| CN101994316A true CN101994316A (en) | 2011-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010508643 Pending CN101994316A (en) | 2010-10-15 | 2010-10-15 | Recyclable composite anchor rod and construction method thereof |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127911A (en) * | 2011-01-24 | 2011-07-20 | 张继红 | Recoverable composite anchor rod and construction method thereof |
| CN102182398A (en) * | 2011-03-04 | 2011-09-14 | 张继红 | Composite clay passage and construction method thereof |
| CN102605780A (en) * | 2012-04-17 | 2012-07-25 | 周治国 | Recyclable anchor rod for foundation pit support and construction method thereof |
| CN102660947A (en) * | 2011-04-29 | 2012-09-12 | 张继红 | Construction method for recoverable anchor rod, and cavity rod body and high-pressure heater for construction method |
| CN102704476A (en) * | 2012-05-15 | 2012-10-03 | 覃永忠 | Recyclable end bearing anchor |
| CN102995638A (en) * | 2012-12-26 | 2013-03-27 | 苏州市能工基础工程有限责任公司 | Steel with fusible wrapping layer |
| CN103031843A (en) * | 2012-12-26 | 2013-04-10 | 苏州市能工基础工程有限责任公司 | Steel product with fusible bonding layer and recovery method thereof |
| CN103061338A (en) * | 2013-02-04 | 2013-04-24 | 苏州市能工基础工程有限责任公司 | Composite steel capable of conveniently recovering core material and recovering method of composite steel |
| CN103088818A (en) * | 2013-02-04 | 2013-05-08 | 苏州市能工基础工程有限责任公司 | Combined steel with core materials convenient to recover and recovery method thereof |
| CN103103984A (en) * | 2013-02-07 | 2013-05-15 | 江苏鼎达建筑新技术有限公司 | Recoverable pre-stressed anchor cable and construction method thereof |
| CN103132518A (en) * | 2013-03-19 | 2013-06-05 | 苏州市能工基础工程有限责任公司 | Modified clamping piece type anchorage device |
| CN103397633A (en) * | 2013-07-26 | 2013-11-20 | 张继红 | Self-drilling RCA (recycling composite anchor) rod and construction method thereof |
| CN103452104A (en) * | 2013-01-18 | 2013-12-18 | 苏州市能工基础工程有限责任公司 | Anchor with clips and cores convenient to disassemble and method for recycling cores of anchor |
| CN103452103A (en) * | 2013-01-18 | 2013-12-18 | 苏州市能工基础工程有限责任公司 | Gripping type anchor with cores convenient to disassemble and method for recycling cores of gripping type anchor |
| CN103452108A (en) * | 2013-01-18 | 2013-12-18 | 苏州市能工基础工程有限责任公司 | Anchor with tapered plug and cores convenient to disassemble and method for recycling cores of anchor |
| CN103469794A (en) * | 2013-01-18 | 2013-12-25 | 苏州市能工基础工程有限责任公司 | Support type anchorage device capable of conveniently disassembling core and core material recovery method for support type anchorage device |
| CN103628478A (en) * | 2013-12-12 | 2014-03-12 | 张继红 | Externally threaded recoverable composite bolt and construction method thereof |
| CN107227962A (en) * | 2017-06-14 | 2017-10-03 | 中铁二院工程集团有限责任公司 | A kind of adjustable tunnel reinforcement structure of dynamic deformation and construction method |
| CN108166491A (en) * | 2017-12-06 | 2018-06-15 | 苏州市能工基础工程有限责任公司 | The method for dismounting of steel strand wires in anchor cable |
| CN109162456A (en) * | 2018-08-07 | 2019-01-08 | 上海建工七建集团有限公司 | A kind of Split bolt sleeve structure, molding plate fixed structure and application method |
| CN112962596A (en) * | 2021-03-09 | 2021-06-15 | 福州大学 | Anchor cable structure capable of being repaired after earthquake and application method thereof |
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| CN2272051Y (en) * | 1996-05-03 | 1998-01-07 | 宁夏煤海实业开发公司矿山配件厂 | Rod recoverable metal anchoring-bolt with plastic expander |
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Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127911A (en) * | 2011-01-24 | 2011-07-20 | 张继红 | Recoverable composite anchor rod and construction method thereof |
| CN102182398A (en) * | 2011-03-04 | 2011-09-14 | 张继红 | Composite clay passage and construction method thereof |
| CN102660947A (en) * | 2011-04-29 | 2012-09-12 | 张继红 | Construction method for recoverable anchor rod, and cavity rod body and high-pressure heater for construction method |
| WO2012146062A1 (en) * | 2011-04-29 | 2012-11-01 | Zhang Jihong | Construction method for indirectly heating recoverable anchors and cavity anchor and high-pressure heater used in the same |
| CN102605780A (en) * | 2012-04-17 | 2012-07-25 | 周治国 | Recyclable anchor rod for foundation pit support and construction method thereof |
| CN102605780B (en) * | 2012-04-17 | 2015-01-28 | 周治国 | Recyclable anchor rod for foundation pit support and construction method thereof |
| CN102704476A (en) * | 2012-05-15 | 2012-10-03 | 覃永忠 | Recyclable end bearing anchor |
| CN102704476B (en) * | 2012-05-15 | 2014-11-05 | 覃永忠 | Recyclable end bearing anchor |
| CN102995638A (en) * | 2012-12-26 | 2013-03-27 | 苏州市能工基础工程有限责任公司 | Steel with fusible wrapping layer |
| CN103031843A (en) * | 2012-12-26 | 2013-04-10 | 苏州市能工基础工程有限责任公司 | Steel product with fusible bonding layer and recovery method thereof |
| CN103452103A (en) * | 2013-01-18 | 2013-12-18 | 苏州市能工基础工程有限责任公司 | Gripping type anchor with cores convenient to disassemble and method for recycling cores of gripping type anchor |
| CN103452108A (en) * | 2013-01-18 | 2013-12-18 | 苏州市能工基础工程有限责任公司 | Anchor with tapered plug and cores convenient to disassemble and method for recycling cores of anchor |
| CN103469794A (en) * | 2013-01-18 | 2013-12-25 | 苏州市能工基础工程有限责任公司 | Support type anchorage device capable of conveniently disassembling core and core material recovery method for support type anchorage device |
| CN103452104A (en) * | 2013-01-18 | 2013-12-18 | 苏州市能工基础工程有限责任公司 | Anchor with clips and cores convenient to disassemble and method for recycling cores of anchor |
| CN103061338A (en) * | 2013-02-04 | 2013-04-24 | 苏州市能工基础工程有限责任公司 | Composite steel capable of conveniently recovering core material and recovering method of composite steel |
| CN103088818A (en) * | 2013-02-04 | 2013-05-08 | 苏州市能工基础工程有限责任公司 | Combined steel with core materials convenient to recover and recovery method thereof |
| CN103103984A (en) * | 2013-02-07 | 2013-05-15 | 江苏鼎达建筑新技术有限公司 | Recoverable pre-stressed anchor cable and construction method thereof |
| CN103103984B (en) * | 2013-02-07 | 2015-03-18 | 江苏鼎达建筑新技术有限公司 | Recoverable pre-stressed anchor cable and construction method thereof |
| CN103132518B (en) * | 2013-03-19 | 2015-05-27 | 苏州市能工基础工程有限责任公司 | Modified clamping piece type anchorage device |
| CN103132518A (en) * | 2013-03-19 | 2013-06-05 | 苏州市能工基础工程有限责任公司 | Modified clamping piece type anchorage device |
| CN103397633A (en) * | 2013-07-26 | 2013-11-20 | 张继红 | Self-drilling RCA (recycling composite anchor) rod and construction method thereof |
| CN103628478A (en) * | 2013-12-12 | 2014-03-12 | 张继红 | Externally threaded recoverable composite bolt and construction method thereof |
| CN107227962A (en) * | 2017-06-14 | 2017-10-03 | 中铁二院工程集团有限责任公司 | A kind of adjustable tunnel reinforcement structure of dynamic deformation and construction method |
| CN107227962B (en) * | 2017-06-14 | 2023-09-22 | 中铁二院工程集团有限责任公司 | Tunnel reinforcing structure with adjustable dynamic deformation and construction method |
| CN108166491A (en) * | 2017-12-06 | 2018-06-15 | 苏州市能工基础工程有限责任公司 | The method for dismounting of steel strand wires in anchor cable |
| CN109162456A (en) * | 2018-08-07 | 2019-01-08 | 上海建工七建集团有限公司 | A kind of Split bolt sleeve structure, molding plate fixed structure and application method |
| CN112962596A (en) * | 2021-03-09 | 2021-06-15 | 福州大学 | Anchor cable structure capable of being repaired after earthquake and application method thereof |
| CN112962596B (en) * | 2021-03-09 | 2022-04-08 | 福州大学 | Anchor cable structure capable of being repaired after earthquake and application method thereof |
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Open date: 20110330 |