CN102493451A - Rock bolt system based on fiber reinforced plastic bolt and ultrahigh-performance cement-based bonding and anchoring medium - Google Patents
Rock bolt system based on fiber reinforced plastic bolt and ultrahigh-performance cement-based bonding and anchoring medium Download PDFInfo
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- CN102493451A CN102493451A CN2011104560403A CN201110456040A CN102493451A CN 102493451 A CN102493451 A CN 102493451A CN 2011104560403 A CN2011104560403 A CN 2011104560403A CN 201110456040 A CN201110456040 A CN 201110456040A CN 102493451 A CN102493451 A CN 102493451A
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Abstract
The invention discloses a rock bolt system based on a fiber reinforced plastic bolt and an ultrahigh-performance cement-based bonding and anchoring medium. The rock bolt system comprises the following implementation steps of: 1, determining a bolt material and an anchoring and bonding medium; 2, designing an anchor system; 3, anchoring two ends of a bolt by using an anchorage device; 4, performing delivery inspection on the bolt; 5, mounting the rock bolt system on site; 6, tensioning the bolt; and 7, sealing an anchor. According to the rock bolt system, the fiber reinforced plastic is taken as the bolt, an ultrahigh-performance cement-based material is taken as a bonding medium at two ends, a group anchor specially designed serves as an overground anchor and an underground anchor-taper cap combination, excellent characteristics of the two high-performance materials are exerted, and a problem of low durability due to steel bar corrosion and grouting ageing in the conventional rock bolt system is solved. The rock bolt system is safe, reliable and high-efficiency, and has good physical properties and a wide application prospect.
Description
One, technical field
The present invention relates to prestressing force ground anchoring, relate in particular to a kind of rock anchor system based on fiber reinforced plastic rod anchor pole and very-high performance cement based bond-anchorage medium.
Two, background technology
Rock anchor system is that tension member is imbedded the rock mass or the soil body that is reinforced, and through both interaction of asking formation anchoring bodys, bears a kind of structural system of external loads jointly.Tradition rock anchor system generally adopts high tensile steel wire or steel strand to expose the anchoring system of stretch-draw end as anchor cable as underground anchoring medium, common presstressed reinforcing steel ground tackle as anchor cable, conventional cement mortar; Yet traditional steel and light water mud are because its intensity is low, decay resistance is relatively poor, causes its actual application surface to face following subject matter:
(1) the rock anchor system is embedded in underground common steel presstressed reinforcing steel and conventional cement mortar; Corrosion very easily takes place under the geological environment of complicacy with aging; It is not in tune far away that its application life and mega-construction project reach century-old projected life, has a strong impact on the safety and the durability of structure.
(2) adopt traditional cement mortar and steel,, cause its material usage and underground construction amount generally bigger because its intensity is lower.What is more important is because the underground construction characteristic of rock anchor structure causes it to build up later maintenance, reinforces very difficulty.Therefore, the possibility of large-scale in the future maintenance and replacing is not considered in the design of rock anchor system basically, in case build up, should be consistent to the requirement of its service life with the bulk life time of engineering structures.This has just proposed requirements at the higher level to the employed material of rock anchor system, and material therefor must have very-high performance, to guarantee to be in stability and the durability of rock anchor system under action of long-term load of adverse circumstances work.And facts have proved: adopt its result of use of rock anchor system of traditional reinforcing bar and cement mortar not reach this requirement far away.
Three, summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned technology, and propose the high fiber reinforced plastic rod anchor pole of a kind of good corrosion resistance, intensity and the rock anchor system of very-high performance cement based bond-anchorage medium.
In order to solve the technical problem of above-mentioned existence, the technical scheme that the present invention proposes is: a kind of rock anchor system based on fiber reinforced plastic rod anchor pole and very-high performance cement based bond-anchorage medium, and this rock anchor system comprises following implementation step:
Step 6, anchor pole stretch-draw: use vertically-displacable jack pair fiber reinforced plastic rod anchor pole to apply stretching force, can lock upper end, ground ground tackle by fastening nut when stretching force reaches designing requirement;
Above-described rock anchor system, upper end, described ground anchor tube has the very-high performance cement-base composite material with lower end, ground anchor tube intra-bladder instillation, and anchoring section also adopts the very-high performance cement-base composite material as grouting agent under the rock anchorage.
Above-described rock anchor system, underground anchoring system is combined into compound anchoring system by grouting of anchoring section very-high performance cement-base composite material and the terminal ground tackle-guiding cap assembly of fiber reinforced plastic rod anchor pole.
Above-described rock anchor system, the clear distance between the plurality of fibers reinforced plastic muscle anchor pole is greater than the diameter of one times of fiber reinforced plastic rod anchor pole.
Above-described rock anchor system, described ground upper end anchor tube or lower end, ground anchor tube inwall are made as conical cavity, and the tapering of conical cavity is 3～8 °.
Above-described rock anchor system, anchor tube anchoring section fiber reinforced plastic rod anchor pole is for being in tilted layout, and the inclination angle is 2～6 °.
Above-described rock anchor system, upper end, described ground anchor tube anchor plate-end is provided with internal thread and is used to connect tensioning screw rod.
Above-described rock anchor system, lower end, described ground anchor tube are provided with internal thread and are used to connect tapered cap.
The present invention compared with prior art has the following advantages: (1) is because fiber wall with strong rib material of plastic material intensity is high, in light weight and exempt from excellent properties such as corrosion and become the ideal substitute that is in conventional steel anchor cable in the underground rock anchor of the extreme natural environment system; Very-high performance cement-based material-the RPC or the equal cloth material of high fine and close ultra-fine grain that in civil engineering, have actual application prospect; Through the fineness and activity that improves component; Make the defective of material internal drop to the end; Maximum load capacity that can obtain to be determined by its component material and excellent durability have the intensity height, toughness is big and the distinguishing feature of good endurance.Fiber reinforced plastic rod and RPC or the equal cloth material of high fine and close ultra-fine grain are combined and form novel underground rock anchor structure and possess reliable and advantage efficiently, and can overcome traditional rock anchor system because corrosion of steel bar, the aging structure durability problem that causes of grouting body.(2) characteristics of comprehensive above-mentioned two kinds of materials have designed crowd's anchor bond-anchorage system, show as the ground tackle structure of rock anchorage epimere, anchor pole end, are made up of parts such as anchor tube, end cap, anchor slab, keeper, hold-down rings; (3) designed compound anchoring system under the rock anchorage; Be mainly and designed the terminal ground tackle-guiding cap composite unit structure of anchor pole; This inside configuration is also with very-high performance cement-based material bond-anchorage fiber reinforced plastic rod anchor pole; Fiber reinforced plastic rod anchor pole ground tackle-guiding cap assembly in transferring process uses as guide frame, and the later stage uses as the terminal ground tackle of anchor pole, when underground anchoring section grouting, together is embedded in during grouting expects with the fiber reinforced plastic rod anchor pole; It changes supporting body into behind the underground anchoring section bonding failure of fiber reinforced plastic rod anchor pole; This moment, the underground anchoring of anchor pole changed the pressure-bearing type into by tension type, made anchor pole have the advantage of tension type and two kinds of traditional anchor poles of bearing type concurrently, had significantly reduced underground anchorage depth.
Know by above; Rock anchor system of the present invention adopt fiber reinforced plastic rod as anchor pole, very-high performance cement-based material-RPC or the equal cloth material of high fine and close ultra-fine grain as the two ends cementing medium; Adopt custom-designed bonded crowd's anchor ground tackle as upper end, ground ground tackle, lower end, anchor pole ground design ground tackle-conductor cap assembly; Not only brought into play the advantageous feature of two kinds of high performance materials; Overcome existing rock anchor system owing to corrosion of steel bar, the aging structure durability problem that causes of injecting cement paste, this rock anchor architecture security, reliable, efficient, and have good physical and mechanical property and wide application prospect.
Four, description of drawings
Fig. 1 is a rock anchor system cross-sectional view of the present invention;
Fig. 2 is ground of the present invention upper end ground tackle or lower end, ground ground tackle cross-sectional view;
Fig. 3 is the structural representation of anchor slab 19 in the ground tackle of the present invention;
Fig. 4 is the structural representation of keeper 20 in the ground tackle of the present invention;
Fig. 5 is the cross-sectional view of hold-down ring 21 in the ground tackle of the present invention;
Fig. 6 is the structural representation of pre-buried fixing steel plate in the rock anchor system of the present invention 8, embedded steel tube 9;
Fig. 7 is a rock anchor system site operation schematic flow sheet of the present invention;
Fig. 8 is the cross section structure sketch map of two kinds of ground of rock anchor system of the present invention hypomere;
Fig. 9 is the anchor pole stretching-drawing structure sketch map of rock anchor system of the present invention.
Name shown in the label is called in the accompanying drawing: the 1-protective cover; Upper end, 2-ground anchor tube; 3-fiber reinforced plastic rod anchor pole; 4-very-high performance cement-base composite material; The 5-nut; The 6-billet; 7-anchoring base; The pre-buried fixing steel plate of 8-; The 9-embedded steel tube; 10-steel concrete pad pier; The 11-scar; The 12-Grouting Pipe; 13-centering frame; The 14-conventional cement mortar; The 15-hole wall; 16-very-high performance cement-base composite material; Lower end, 17-ground anchor tube; The 18-end cap; The 19-anchor slab; The 20-keeper; The 21-hold-down ring; The 22-tapered cap; 23-anchor tube external screw thread; 24-anchor tube internal thread; The 25-tensioning screw rod; The 26-spike; 27-vertically-displacable jack; 28-instrument nut.
Five, the specific embodiment
Do further elaboration in detail below in conjunction with the accompanying drawing specific embodiments of the invention, but embodiment of the present invention is not limited thereto.
A kind of rock anchor system of the present invention based on fiber reinforced plastic rod anchor pole and very-high performance cement based bond-anchorage medium, the practical implementation step is following:
(1) confirm anchor pole material and anchoring bond medium: confirm the particular type of fibre-reinforced plastics muscle, as the anchor pole material, confirm the raw material and the proportioning of very-high performance cement-base composite material with it, with it as the anchoring bond medium;
(2) design anchoring system: material carries out wood property research after confirming; Confirm the adhesion strength of plurality of fibers reinforced plastic muscle anchor pole in the bond-anchorage system 3 and the contact interface of very-high performance cement-based material, the slip casting of very-high performance cement based and on-the-spot subterranean body through pull-out test; With the conclusion (of pressure testing) is foundation; Rock anchor system is carried out size drafts, main design content be fiber reinforced plastic rod anchor pole 3 quantity and arrangement mode, the upper end ground tackle critical size, the underground segment length of rock anchor system, lower end ground tackle-guiding cap assembly critical size etc.;
(3) ground tackle anchoring rod two ends: earlier a plurality of centering framves 13 are evenly arranged in fibre-reinforced plastics muscle anchor pole 3 stage casings; Again fibre-reinforced plastics muscle anchor pole 3 one ends are passed successively hold-down ring 21, keeper 20 and upper end, the ground anchor tube 2 of ground tackle; Then fibre-reinforced plastics muscle anchor pole 3 corresponding anchor hole from anchor slab 19 is passed, at last fibre-reinforced plastics muscle anchor pole 3 is located and is fixed on the rear end of upper end, ground anchor tube 2; Fibre-reinforced plastics muscle anchor pole 3 other ends are equipped with lower end, ground ground tackle, and the structure of lower end, ground ground tackle and erection sequence and upper end, ground ground tackle are basic identical; Keeper 20 ends to upper end, ground anchor tube 2 and lower end, ground anchor tube 17 pour into very-high performance cement-based material 4 in the chamber then; Treat that slurry overflows the slight vibration compacting in back; Fixed positioning piece 20, the hold-down ring 21 of screwing carry out maintenance to very-high performance cement-based material 4 at last again, treat that it reaches desired strength;
(4) anchor pole exfactory inspection: the fibre-reinforced plastics muscle anchor pole 3 that in factory, completes has the fiber reinforced plastic rod-ground tackle assembly of ground tackle for the equal anchoring in two ends.Be the reliability of checking two ends anchor structure, need carry out assembly stretch-draw check before fiber reinforced plastic rod-the ground tackle assembly dispatches from the factory, choose stretch-draw place and equipment according to rock-bolt length; The anchor drum outer wall at two ends is equipped with nut as bearing surface; Putting of fiber reinforced plastic rod-ground tackle assembly must make two anchor tube axis on same straight line; Fiber reinforced plastic rod-ground tackle assembly one end is fixed; The other end applies stretching force through the jack pushing tow, stretching force reach design load can judge qualified;
(5) rock anchor system is on-the-spot installs: Fig. 7 shows the site operation flow process of this rock anchor system; Concrete installation steps are following: excavation of foundation pit and boring are carried out according to designing requirement in (1); Hole site depth has more 40～60cm than fiber reinforced plastic rod anchor pole 3 length; Make fiber reinforced plastic rod anchor pole 3 after installation, before the slip casting, all keep suspended state, this processing method can keep the straight linear of fiber reinforced plastic rod anchor pole 3, avoids the bending of fibre-reinforced plastics muscle material to be cut; (2) colligation concrete mats pier steel mesh reinforcement is installed pre-buried fixing steel plate 8 and embedded steel tube 9, and concreting carries out maintenance to concrete then again, treats that it reaches desired strength; (3) check whether each anchor pole is intact, the overcoat and the accessory that damage are repaired, tapered cap 22 accessories such as grade and anchor pole suspension apparatus are installed again, it is in place then fiber reinforced plastic rod-ground tackle assembly and Grouting Pipe 12 to be put into boring; (4) through reserving Grouting Pipe 12 very-high performance cement-based material 16 slurries that configure are poured into position, hole hypomere, carry out maintenance to building material then, treat that it reaches desired strength.Because fibre-reinforced plastics material itself is different with steel severe; Select for use the fibre-reinforced plastics material of different fibers, different shape can cause the longitudinal rigidity of made fiber reinforced plastic rod anchor pole 3 to have greatest differences; When carrying out 4 grouting of ground hypomere very-high performance cement-base composite material; Can carry out than choosing following two kinds of grouting process: if fiber reinforced plastic rod anchor pole 3 is gentleer; Can earlier Grouting Pipe 12 and fiber reinforced plastic rod anchor pole 3 be put into the hole, after-pouring very-high performance cement-base composite material 16 simultaneously; If fiber reinforced plastic rod anchor pole 3 rigidity are big, also can earlier Grouting Pipe 12 be put into the hole, descend anchoring section to be in the milk again over the ground, at last fiber reinforced plastic rod anchor pole 3 is inserted in the very-high performance cement-base composite material 16;
(6) anchor pole stretch-draw: treat that underground anchoring section grouting reaches desired strength; Can carry out entire beam tension to each fiber reinforced plastic rod anchor pole 3; Elder generation screws tensioning screw rod 25 and connects with upper end, ground anchor tube 2 internal threads 24, lay spike 26, vertically-displacable jack 27 and instrument nut 28 then, and each component axis is consistent; Use 27 pairs of fiber reinforced plastic rod anchor poles 3 of vertically-displacable jack to apply stretching force at last, get final product upper end, fastening nut 5 locking ground ground tackle when stretching force reaches designing requirement;
(7) sealing off and covering anchorage: before sealing off and covering anchorage, position, ground hole is the filled section not, can pour into conventional cement mortar 14 and fill, and end cap 18 is installed again with protective cover 1 the ground anchored end is sealed.
Above-mentioned implementation step has following characteristic: upper end, fiber reinforced plastic rod anchor pole 3 ground anchoring medium all adopts the very-high performance cement-base composite material as the bond-anchorage medium with lower end, ground anchoring medium; Because the technology with field fabrication in the factory is different; So select two kinds of different mixture ratio and two cover maintenance measures for use, with the optimum performance of performance material.Upper end, fiber reinforced plastic rod anchor pole 3 ground anchoring medium adopts the very-high performance cement-base composite material perfusion anchoring that is suitable for plant produced; Very-high performance cement-base composite material grouting material as aggregate, adopts that 3～5 days intensity of hot bath maintenance can reach 130MPa more than 80 ℃ with 40-70 purpose quartz sand; Fiber reinforced plastic rod anchor pole 3 underground anchoring medium then adopt and are suitable for the Ultrastrength cement based composites slurry perfusion that on-the-spot slip casing by pressure machine uses; The Ultrastrength cement based composites is selected no aggregate grouting material for use; And added nano material to improve its mobile performance, taked 12～16 days intensity of solution cavity maintenance of simulate formation environment can reach 110MPa.
Upper end, fiber reinforced plastic rod anchor pole 3 ground ground tackle is to make to the characteristics design of fibre-reinforced plastics and very-high performance cement-based material with lower end, ground ground tackle; Characteristics comprise: in the rock anchor system; The arrangement of multiple fibre reinforced plastic muscle anchor pole 3 should be followed dispersion, symmetry principle; It is stressed or inhomogeneous stressed to avoid the muscle material to concentrate, and the reasonable clear distance of each fiber reinforced plastic rod anchor pole 3 should be greater than one times of muscle material diameter, arranges in the position, hole on definite on this basis keeper 19, the anchor slab 20; Upper end, ground anchor tube 2 or lower end, ground anchor tube 17 inwalls are made as conical cavity, and slurry perfusion back wedgewise can improve its bond-anchorage effect, and the reasonable range of taper of conical cavity is at 3～15 °; Anchor tube anchoring section fiber reinforced plastic rod anchor pole 3 is established the inclination angle equally, and reasonably the inclination angle scope is 2～12 °, can avoid the muscle material to be cut when improving anchoring effect; The adhesion strength of two kinds of materials of consideration is confirmed anchor tube length degree; The average adhesion strength that the plurality of fibers that present embodiment adopts strengthens composite plastic muscle and very-high performance cement-based material reaches about 20MPa; The about 250mm of then theoretical anchorage length, the design of anchor tube length degree also need be considered certain safety factor; Ground upper end anchor tube 2 or lower end, ground anchor tube 17 outer walls are established external screw thread 23, its effect be in factory during assembly stretch-draw at two ends the anchor tube nut 5 is installed is used for fixing and applies jacking force, fastening nut 5 carries out the load locking after the stretch-draw of on-the-spot rock anchor; In addition, each anchor tube anchor slab 19 end is established internal thread 24, and its effect is to be used for connecting tensioning screw rod 25 when holding 2 stretch-draw of anchor tube on the ground, and lower end, ground anchor tube 17 internal threads are used for anchor pole and transfer the preceding tapered cap 22 of installing.
Ground tackle-guiding cap the assembly of fiber reinforced plastic rod anchor pole 3 ground lower ends and upper end, ground ground tackle structural similarity, it is preceding that anchor pole is installed (following rope) at the scene, and first external screw thread with tapered cap 22 screws with lower end, ground anchor tube 17 internal threads and connects, and makes terminal tapered.It is transferred in the process at anchor pole and uses as guiding device; Later stage uses as the terminal ground tackle of anchor pole; Can be with fiber reinforced plastic rod anchor pole 3 in underground anchoring, it changes supporting body into behind fiber reinforced plastic rod anchor pole 3 underground anchoring section bonding failures, and the underground anchoring of fiber reinforced plastic rod anchor pole 3 at this moment changes the pressure-bearing type into by tension type; Make fiber reinforced plastic rod anchor pole 3 have the advantage of tension type and two kinds of traditional anchor poles of bearing type concurrently, significantly reduced underground anchorage depth.
The specific embodiment of the invention in sum is merely the preferred embodiment of the present invention, is not the restriction that is used to limit protection domain of the present invention.Therefore, any change of within technical characterictic of the present invention, being done, modification, substitute, combination or simplify, all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (8)
1. rock anchor system based on fiber reinforced plastic rod anchor pole and very-high performance cement based bond-anchorage medium, it is characterized in that: this rock anchor system comprises following implementation step:
Step 1, confirm the particular type of fibre-reinforced plastics muscle, as the anchor pole material, confirm the raw material and the proportioning of very-high performance cement-base composite material with it, with it as the anchoring bond medium;
Step 2, design anchoring system: main design content be fiber reinforced plastic rod anchor pole (3) quantity and arrangement mode, the upper end ground tackle critical size, the underground segment length of rock anchor system, lower end ground tackle-guiding cap assembly critical size;
Step 3, ground tackle anchoring rod two ends: earlier a plurality of centering framves (13) are evenly arranged in fibre-reinforced plastics muscle anchor pole (3) interlude; Again fibre-reinforced plastics muscle anchor pole (3) one ends are passed successively hold-down ring (21), keeper (20) and upper end, the ground anchor tube (2) of ground tackle; Then fibre-reinforced plastics muscle anchor pole (3) corresponding anchor hole from anchor slab (19) is passed, at last fibre-reinforced plastics muscle anchor pole (3) is located and is fixed on the rear end of ground upper end anchor tube (2); Fibre-reinforced plastics muscle anchor pole (3) other end is equipped with lower end, ground ground tackle, and the structure of lower end, ground ground tackle and erection sequence and upper end, ground ground tackle are basic identical; Keeper (20) end to ground upper end anchor tube (2) and ground lower end anchor tube (17) pours into very-high performance cement-based material (4) in the chamber then; Treat that slurry overflows the slight vibration compacting in back; Fixed positioning piece (20), the hold-down ring of screwing (21) again; At last very-high performance cement-based material (4) is carried out maintenance, treat that it reaches desired strength;
Step 4, anchor pole exfactory inspection: use the fiber reinforced plastic rod-ground tackle assembly of jack pair two ends anchoring to apply the pushing tow stretching force, stretching force reaches design load can judge that two ends anchored end supporting capacity is qualified;
Step 5, the on-the-spot installation of rock anchor system: concrete installation steps are following: (1) excavation and boring; (2) make steel concrete pad pier; (3) skyhook; (4) build the very-high performance cement-base composite material;
Step 6, anchor pole stretch-draw: use vertically-displacable jack (27) that fiber reinforced plastic rod anchor pole (3) is applied stretching force, get final product upper end, fastening nut (5) locking ground ground tackle when stretching force reaches designing requirement;
Step 7, sealing off and covering anchorage: end cap (18) and protective cover (1) are installed the ground anchored end is sealed.
2. rock anchor system according to claim 1 is characterized in that: described ground upper end anchor tube (2) and ground lower end anchor tube (17) intra-bladder instillation have very-high performance cement-base composite material (4); Anchoring section also adopts very-high performance cement-base composite material (16) as grouting agent under the rock anchorage.
3. rock anchor system according to claim 1 is characterized in that: underground anchoring system is combined into compound anchoring system by anchoring section very-high performance cement-base composite material (16) grouting and the terminal ground tackle-guiding cap assembly of fiber reinforced plastic rod anchor pole (3).
4. rock anchor system according to claim 1 is characterized in that: the clear distance between the plurality of fibers reinforced plastic muscle anchor pole (3) is greater than the diameter of one times of fiber reinforced plastic rod anchor pole (3).
5. rock anchor system according to claim 1 is characterized in that: described ground upper end anchor tube (2) or ground lower end anchor tube (17) inwall are made as conical cavity, and the tapering of conical cavity is 3～8 °.
6. rock anchor system according to claim 1 is characterized in that: anchor tube anchoring section fiber reinforced plastic rod anchor pole (3) is for being in tilted layout, and the inclination angle is 2～6 °.
7. according to claim 1 or 5 described rock anchor systems, it is characterized in that: described ground upper end anchor tube (2) anchor slab (19) end is provided with internal thread (24) and is used to connect tensioning screw rod (25).
8. according to claim 1 or 5 described rock anchor systems, it is characterized in that: lower end, described ground anchor tube (17) is provided with internal thread and is used to connect tapered cap (22).
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| CN201110456040.3A CN102493451B (en) | 2011-12-30 | 2011-12-30 | Preparation method of rock bolt system based on fiber reinforced plastic bolt and ultrahigh-performance cement-based bonding and anchoring medium |
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| CN201110456040.3A CN102493451B (en) | 2011-12-30 | 2011-12-30 | Preparation method of rock bolt system based on fiber reinforced plastic bolt and ultrahigh-performance cement-based bonding and anchoring medium |
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Cited By (8)
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| CN103528950A (en) * | 2013-10-31 | 2014-01-22 | 闫楠 | Method for testing bonding strength between anchor rod anchoring body and weathered rock mass |
| CN104005410A (en) * | 2014-06-23 | 2014-08-27 | 湖南大学 | Tensioning and anchoring device based on unbonded prestress reinforced soil technology |
| CN105544392A (en) * | 2015-12-22 | 2016-05-04 | 中国科学院武汉岩土力学研究所 | Root key type pressure bearing mechanism in anchor hole, assembling method, root key type anchor cable and method for grouting anchor hole |
| CN108035492A (en) * | 2017-12-29 | 2018-05-15 | 扬州大学 | A kind of new FRP tendons crotch anchoring process |
| CN109057170A (en) * | 2018-09-26 | 2018-12-21 | 湖南大学 | A kind of fibre reinforced composites linked system and implementation method based on cement base cementing medium |
| CN109853547A (en) * | 2019-03-29 | 2019-06-07 | 华侨大学 | A kind of U-shaped centering bracket and anchor pole for anchor pole |
| CN110487715A (en) * | 2019-08-23 | 2019-11-22 | 淮阴工学院 | A kind of high ductility cement-based material Single fiber pull-out test device and test method |
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| CN103528950A (en) * | 2013-10-31 | 2014-01-22 | 闫楠 | Method for testing bonding strength between anchor rod anchoring body and weathered rock mass |
| CN103528950B (en) * | 2013-10-31 | 2016-03-02 | 闫楠 | Bond strength testing method between a kind of anchorage body and weathered rock |
| CN104005410A (en) * | 2014-06-23 | 2014-08-27 | 湖南大学 | Tensioning and anchoring device based on unbonded prestress reinforced soil technology |
| CN104005410B (en) * | 2014-06-23 | 2015-12-02 | 湖南大学 | A kind of stretching and anchoring device based on prestressing without bondn reinforced earth technology |
| US9783948B2 (en) | 2015-12-22 | 2017-10-10 | Institute Of Rock And Soil Mechanics, Chinese Academy Of Sciences | Root key type pressure bearing mechanism in anchor hole, root key type anchor cable and anchor hole grouting method |
| CN105544392B (en) * | 2015-12-22 | 2017-01-04 | 中国科学院武汉岩土力学研究所 | Root keyed bearing mechanism and assemble method in anchor hole, root keyed anchor cable, method to anchor hole slip casting |
| CN105544392A (en) * | 2015-12-22 | 2016-05-04 | 中国科学院武汉岩土力学研究所 | Root key type pressure bearing mechanism in anchor hole, assembling method, root key type anchor cable and method for grouting anchor hole |
| CN108035492A (en) * | 2017-12-29 | 2018-05-15 | 扬州大学 | A kind of new FRP tendons crotch anchoring process |
| CN109057170A (en) * | 2018-09-26 | 2018-12-21 | 湖南大学 | A kind of fibre reinforced composites linked system and implementation method based on cement base cementing medium |
| CN109853547A (en) * | 2019-03-29 | 2019-06-07 | 华侨大学 | A kind of U-shaped centering bracket and anchor pole for anchor pole |
| CN109853547B (en) * | 2019-03-29 | 2023-12-15 | 华侨大学 | U-shaped centering bracket for anchor rod and anchor rod |
| CN110487715A (en) * | 2019-08-23 | 2019-11-22 | 淮阴工学院 | A kind of high ductility cement-based material Single fiber pull-out test device and test method |
| CN114108810A (en) * | 2021-11-29 | 2022-03-01 | 扬州大学 | Composite enhanced steel sleeve joint for assembling FRP pipe truss and installation method |
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