CN104695435B - A kind of auto-lock anchorage fiber anchor rod and construction method - Google Patents
A kind of auto-lock anchorage fiber anchor rod and construction method Download PDFInfo
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- CN104695435B CN104695435B CN201510157537.3A CN201510157537A CN104695435B CN 104695435 B CN104695435 B CN 104695435B CN 201510157537 A CN201510157537 A CN 201510157537A CN 104695435 B CN104695435 B CN 104695435B
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- fibre bag
- central tube
- locating rack
- euphroe
- support
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
Abstract
A kind of auto-lock anchorage fiber anchor rod and construction method, belong to Anchorage Technology field, and auto-lock anchorage fiber anchor rod is made up of Fibre Bag, backing plate and euphroe; Fibre Bag inner sleeve locating rack, locating rack stretches into Fibre Bag bottom, and metal clamps is closely clamped and fastened on Fibre Bag locating rack from outside at cylinder place; Euphroe is support inner sleeve central tube, upper left the parting on the right side of central tube in support outside do not installed ratchet, on support, be hinged with by pivot pin the tooth bar matching with ratchet, be fixed with rope hook on central tube, on the central tube in support outside, one end offers the circular hole for inserting boosting-rod; By sleeve valve, to Fibre Bag internal pressure injecting cement paste, Fibre Bag expansion slurry condensation cure is anchored in good ground; Euphroe is secured by bolts on backing plate, and rope form Fibre Bag is bundled on the rope hook of euphroe; Structure is slim and graceful, anticorrosive strong with durability, avoids stretch-draw and the anchoring problem of traditional F RP muscle, and prestressing force compensation is convenient, quick construction.
Description
Technical field
The invention belongs to geotechnical anchor engineering technical field, be specifically related to a kind of auto-lock anchorage fiber anchor rod and construction method, be mainly applicable to the support engineering such as side slope, foundation ditch.
Background technology
In the fields such as underground engineering, foundation ditch and slope project, suspension roof support is most widely used rock-reinforcing measure. Anchor pole carrys out the slope thrust of balance ground by self anchoring into bearing tension in ground, thereby improves the self-stable ability of ground. At present, common anchor pole type mainly contains grouted anchor bar, anchor cable, mechanical anchor pole, pipe seam anchor bar, enlarging anchor rod, swollen shell anchor pole etc., the material of these anchor poles is mainly taking steel as main, but the easy-to-rust problem of steel becomes the outstanding problem that affects anchoring system security and durability day by day, and steel anchor pole is from great, increases construction labour burden. Therefore, in geotechnical anchor engineering, must carry out corrosion protection design to anchor pole, take suitable anti-corrosion measure. Traditional anti-corrosion measure can increase the complexity of constructing operation on the one hand, can improve on the other hand construction costs.
In the face of above-mentioned defect and the fibrous material of steel anchor pole have the advantages such as tensile strength is high and corrosion-resistant, people have proposed the thinking of employing fibre reinforced composites (FRP) muscle replacement steel. Fibre reinforced composites are with fibrous material and host material resinoid bond, through special mould extruding, the body of rod of drawing moulding. The major advantage of FRP muscle: (1) tensile strength is high, under equivalent diameter, the tensile strength of FRP muscle is apparently higher than regular reinforcement anchor pole; (2) corrosion resistance and good endurance; (3) from heavy and light, transport, easy construction; (4) elastic modelling quantity is little, and thermal coefficient of expansion and concrete are close, and variation of ambient temperature does not affect FRP and concrete cooperative work performance; (5) adhesion strength of FRP muscle and mortar is about 90% of regular reinforcement and mortar bonding strength; These advantages promote FRP and have broad application prospects in Practical Project. But FRP is a kind of typical anisotropic material, its axial tensile-strength is higher, and side direction shearing strength is lower, if FRP muscle is directly clamped with ground tackle as anchor metal, can there is because shearing strength is not enough partial cut cleavage fracture, the tensile strength of FRP muscle is not fully utilized, therefore the end stretch-draw of FRP muscle and anchoring problem become increasingly conspicuous, the ground tackle setting of FRP muscle seems particularly important. The adhesion strength of FRP muscle material and mortar is lower than the adhesion strength between normal optical round bar and mortar, and average adhesion strength reduces along with the increase of FRP muscle material diameter, this significant limitation the application of FRP muscle in anchoring engineering. Although being carried out to different in nature processing, FRP muscle surface can obtain good adhesive property between concrete, this complex treatment process, and costly.
For the above-mentioned defect of reinforced anchor bolt and FRP muscle, how to avoid the anchoring of FRP muscle, stretch-draw and adhesion problem, and the advantage of utilizing fibrous material is designed a kind of fiber anchor rod, solve the difficulty that existing ground anchorage faces, it is a difficult problem needing now solution badly that promotion anchoring engineering advances.
Summary of the invention
The object of the invention is to solve the existing above-mentioned deficiency of prior art, a kind of auto-lock anchorage fiber anchor rod and construction method are provided, solve stretch-draw, the anchoring problem of current reinforced anchor bolt corrosion, FRP muscle.
The present invention is a kind of auto-lock anchorage fiber anchor rod and construction method, and auto-lock anchorage fiber anchor rod is made up of Fibre Bag 1, backing plate 7 and euphroe 8, Fibre Bag 1 inner sleeve has locating rack 2, and locating rack 2 stretches into the bottom of Fibre Bag 1, and locating rack 2 cover has one end of sleeve valve 6 towards the openend of Fibre Bag 1, and metal clamps 5 is closely clamped and fastened on Fibre Bag 1 locating rack 2 from outside at cylinder 4 places, euphroe 8 comprises support 9, central tube 10, ratchet 11, tooth bar 12, pivot pin 13, rope hook 14, circular hole 15, boosting-rod 16, its medium-height trestle 9 inner sleeves have central tube 10, central tube 10 can freely rotate around the hole of support 9, upper left the parting on the right side of central tube 10 in the outside of support 9 do not installed ratchet 11, on support 9, be hinged with by pivot pin 13 tooth bar 12 matching with ratchet 11, tooth bar 12 can be up and down around pivot pin 13, when ratchet 11 is mutually meshing with tooth bar 12, central tube 10 can only be to a direction rotation, on central tube 10, be fixed with rope hook 14, on the central tube 10 in support 9 outsides, one end offers the circular hole 15 for inserting boosting-rod 16, by sleeve valve 6, to Fibre Bag 1 internal pressure slip casting, Fibre Bag 1 expansion slurry 19 condensation cure are anchored in good ground, the Fibre Bag 1 of not slip casting section is twisted into rope form through backing plate 7, and euphroe 8 is fixed on backing plate 7 by bolt 18, and rope form Fibre Bag 1 is bundled on the rope hook 14 of euphroe 8, boosting-rod 16 inserts in the circular hole 15 of central tube 10, rotates boosting-rod 16 rope form Fibre Bag 1 is wrapped on central tube 10, stretch-draw Fibre Bag 1, ratchet 11 and the mutually meshing locking anchoring of tooth bar 12.
The construction method of a kind of auto-lock anchorage fiber anchor rod of the present invention, the steps include:
(1) investigation and analysis Supporting Object engineering geological condition, carries out engineer geological prospecting and design, and the potential sliding surface position that Analysis deterrmination may come down is determined free segment and the anchoring section length of required anchor pole;
(2) make locating rack 2: locating rack 2 is welded cylinder 4 and reinforced steel bar ring by dowel 3, and cylinder 4 outside turning have screw thread; The length of dowel 3 equals the anchoring section length of required anchor pole;
(3) make Fibre Bag 1: according to length, thickness and the diameter of the selected required Fibre Bag 1 of step (1), oversleeve valve 6 on the cylinder 4 of locating rack 2, locating rack 2 is stretched in Fibre Bag 1, one end of cylinder 4 is towards Fibre Bag 1 openend, Fibre Bag 1 closely clamped in cylinder 4 outsides, places of locating rack 2 by metal clamps 5;
(4) make euphroe 8: on central tube 10, offer circular hole 15, processing is with the support 9 of connecting plate and bolt hole 17, on support 9, be hinged with tooth bar 12 by pivot pin 13, central tube 10 is enclosed within support 9, the symmetrical ratchet 11 of installing on the central tube 10 in support 9 outsides;
(5) hole-opening 20 and slip casting: offer hole 20 by design length and angle on slope body 21; Grouting Pipe puts in Fibre Bag 1, and be connected by external screw thread with the cylinder 4 of locating rack 2, Grouting Pipe and Fibre Bag 1 are together stretched in hole 20, the Grouting Pipe other end is connected with grouting equipment, determines grouting pressure according to different stratum conditions, carries out slip casting, slurry 19 flow through successively Grouting Pipe, sleeve valve 6 enter in Fibre Bag 1, Fibre Bag 1 expands, and grouting design value to be reached, by Grouting Pipe removal from locating rack 2; Slurry 19, at the interior setting and hardening of Fibre Bag 1, is anchored in good ground; The single effect of sleeve valve 6, slurry 19 is wrapped in Fibre Bag 1 and is difficult to flow everywhere, avoids free segment Fibre Bag 1 to be solidified by slurry 19;
(6) stretch-draw and anchoring: the Fibre Bag of not slip casting section 1 is twisted into rope form and passes domatic backing plate 7; Bolt 18 is fixed on euphroe 8 on backing plate 7, and rope form Fibre Bag 1 is bundled on the rope hook 14 of euphroe 8; Boosting-rod 16 inserts in the circular hole 15 of euphroe 8, and rotate boosting-rod 16 rope form Fibre Bags 1 and be wrapped on central tube 10, after stretch-draw is tightened, ratchet 11 and the mutually meshing locking of tooth bar 12.
The invention has the beneficial effects as follows: the present invention is simple in structure, design ingeniously, form is reasonable, anticorrosive and durability is strong, takes full advantage of the advantage of fibrous material, has avoided the serious phenomenon of the long-term corrosion of steel anchor pole. Adopt euphroe auto-lock anchorage, performance can be given full play in tension state in any position of fiber anchor rod, has solved traditional ground tackle clamping fiber part is cut and the problem destroyed in advance. The slip casting of Fibre Bag internal pressure can reach high pressure conditions, compacted soil layer around, Fibre Bag parcel slurry and soil layer form good anchoring section, solve traditional fibre material and slurry adhesion strength is low, affect the complicated technology of anchoring and fiber surface processing, avoided slurries to flow everywhere and caused by the large problem of slurry amount. Location is erected guide effect and is realized fiber anchor rod and enter hole and location, the single effect of rubber sleeve valve, and slurries are wrapped in Fibre Bag and can not flow everywhere, and free segment fiber is not solidified and is convenient to condense into rope form by slurry; Euphroe stretch-draw anchor, easy construction, after loss of prestress, rotates euphroe compensation prestressing force by boosting-rod very convenient; Structure is slim and graceful, and labour bears gently, and speed of application is quick, and strong adaptability is cheap, and its market prospects are very wide.
Brief description of the drawings
Fig. 1 is the schematic diagram of auto-lock anchorage fiber anchor rod of the present invention, and Fig. 2 is the schematic diagram of euphroe in Fig. 1, and Fig. 3 is the schematic diagram of locating rack, and Fig. 4 is the schematic diagram that the present invention implements in slope support engineering.
Description of reference numerals: Fibre Bag 1, locating rack 2, dowel 3, cylinder 4, metal clamps 5, sleeve valve 6, backing plate 7, euphroe 8, support 9, central tube 10, ratchet 11, tooth bar 12, pivot pin 13, rope hook 14, circular hole 15, boosting-rod 16, bolt hole 17, bolt 18, slurry 19, hole 20, slope body 21.
Detailed description of the invention
Below in conjunction with accompanying drawing and instantiation, feature of the present invention is done further to describe, example is only for explaining the present invention, not for limiting the scope of the invention. Reading after the present invention, within the spirit and principles in the present invention all, any amendment of doing, be equal to replace and improve and all should be contained in protection scope of the present invention.
As shown in Figure 1,2,3, 4, the present invention is a kind of auto-lock anchorage fiber anchor rod and construction method, and auto-lock anchorage fiber anchor rod is made up of Fibre Bag 1, backing plate 7 and euphroe 8, Fibre Bag 1 inner sleeve has locating rack 2, and locating rack 2 stretches into the bottom of Fibre Bag 1, and locating rack 2 cover has one end of sleeve valve 6 towards the openend of Fibre Bag 1, and metal clamps 5 is closely clamped and fastened on Fibre Bag 1 locating rack 2 from outside at cylinder 4 places, euphroe 8 comprises support 9, central tube 10, ratchet 11, tooth bar 12, pivot pin 13, rope hook 14, circular hole 15, boosting-rod 16, its medium-height trestle 9 inner sleeves have central tube 10, central tube 10 can freely rotate around the hole of support 9, upper left the parting on the right side of central tube 10 in the outside of support 9 do not installed ratchet 11, on support 9, be hinged with by pivot pin 13 tooth bar 12 matching with ratchet 11, tooth bar 12 can be up and down around pivot pin 13, when ratchet 11 is mutually meshing with tooth bar 12, central tube 10 can only be to a direction rotation, on central tube 10, be fixed with rope hook 14, on the central tube 10 in support 9 outsides, one end offers the circular hole 15 for inserting boosting-rod 16, by sleeve valve 6, to Fibre Bag 1 internal pressure slip casting, Fibre Bag 1 expansion slurry 19 condensation cure are anchored in good ground, the Fibre Bag 1 of not slip casting section is twisted into rope form through backing plate 7, and euphroe 8 is fixed on backing plate 7 by bolt 18, and rope form Fibre Bag 1 is bundled on the rope hook 14 of euphroe 8, boosting-rod 16 inserts in the circular hole 15 of central tube 10, rotates boosting-rod 16 rope form Fibre Bag 1 is wrapped on central tube 10, stretch-draw Fibre Bag 1, ratchet 11 and the mutually meshing locking anchoring of tooth bar 12.
As shown in Fig. 1,4, the material of Fibre Bag 1 is glass fibre, or carbon fiber, or aramid fiber.
As shown in Fig. 1,3,4, locating rack 2 is welded cylinder 4 and reinforced steel bar ring by dowel 3, and cylinder 4 outside turning have screw thread; The process locating rack 2 that Fibre Bag 1 is put into hole 20 play the guiding role, and Fibre Bag 1 is centered in hole 20.
As shown in Figure 1, 2, on the support 9 of euphroe 8, with connecting plate and bolt hole 17, the size of both sides ratchet 11 and tooth bar 12 is identical, and is symmetrically arranged, and ratchet 11 diameters are less than the width of support 9 middle part parts in parallel; Circular hole 15 numbers of offering on central tube 10 are four, layout in 90 ° separately; Between central tube 10 and support 9, do not weld, guarantee that central tube 10 can rotate freely around the hole of support 9.
As shown in Figure 1, sleeve valve 6 is rubber sleeve valve.
As shown in Figure 1,2,3, 4, the construction method of a kind of auto-lock anchorage fiber anchor rod of the present invention, the steps include:
(1) investigation and analysis Supporting Object engineering geological condition, carries out engineer geological prospecting and design, and the potential sliding surface position that Analysis deterrmination may come down is determined free segment and the anchoring section length of required anchor pole;
(2) make locating rack 2: locating rack 2 is welded cylinder 4 and reinforced steel bar ring by dowel 3, and cylinder 4 outside turning have screw thread; The length of dowel 3 equals the anchoring section length of required anchor pole;
(3) make Fibre Bag 1: according to length, thickness and the diameter of the selected required Fibre Bag 1 of step (1), oversleeve valve 6 on the cylinder 4 of locating rack 2, locating rack 2 is stretched in Fibre Bag 1, one end of cylinder 4 is towards Fibre Bag 1 openend, Fibre Bag 1 closely clamped in cylinder 4 outsides, places of locating rack 2 by metal clamps 5;
(4) make euphroe 8: on central tube 10, offer circular hole 15, processing is with the support 9 of connecting plate and bolt hole 17, on support 9, be hinged with tooth bar 12 by pivot pin 13, central tube 10 is enclosed within support 9, the symmetrical ratchet 11 of installing on the central tube 10 in support 9 outsides;
(5) hole-opening 20 and slip casting: offer hole 20 by design length and angle on slope body 21; Grouting Pipe puts in Fibre Bag 1, and be connected by external screw thread with the cylinder 4 of locating rack 2, Grouting Pipe and Fibre Bag 1 are together stretched in hole 20, the Grouting Pipe other end is connected with grouting equipment, determines grouting pressure according to different stratum conditions, carries out slip casting, slurry 19 flow through successively Grouting Pipe, sleeve valve 6 enter in Fibre Bag 1, Fibre Bag 1 expands, and grouting design value to be reached, by Grouting Pipe removal from locating rack 2; Slurry 19, at the interior setting and hardening of Fibre Bag 1, is anchored in good ground; The single effect of sleeve valve 6, slurry 19 is wrapped in Fibre Bag 1 and is difficult to flow everywhere, avoids free segment Fibre Bag 1 to be solidified by slurry 19;
(6) stretch-draw and anchoring: the Fibre Bag of not slip casting section 1 is twisted into rope form and passes domatic backing plate 7; Bolt 18 is fixed on euphroe 8 on backing plate 7, and rope form Fibre Bag 1 is bundled on the rope hook 14 of euphroe 8; Boosting-rod 16 inserts in the circular hole 15 of euphroe 8, and rotate boosting-rod 16 rope form Fibre Bags 1 and be wrapped on central tube 10, after stretch-draw is tightened, ratchet 11 and the mutually meshing locking of tooth bar 12.
Claims (5)
1. an auto-lock anchorage fiber anchor rod, is characterized in that: this anchor pole is made up of Fibre Bag (1), backing plate (7) and euphroe (8), Fibre Bag (1) inner sleeve has locating rack (2), locating rack (2) is welded cylinder (4) and reinforced steel bar ring by dowel (3), cylinder (4) outside turning has screw thread, locating rack (2) stretches into the bottom of Fibre Bag (1), and locating rack (2) cover has one end of sleeve valve (6) towards the openend of Fibre Bag (1), and metal clamps (5) is located Fibre Bag (1) to be closely clamped and fastened on from outside locating rack (2) at cylinder (4), euphroe (8) comprises support (9), central tube (10), ratchet (11), tooth bar (12), pivot pin (13), rope hook (14), circular hole (15), boosting-rod (16), its medium-height trestle (9) inner sleeve has central tube (10), central tube (10) can freely rotate around the hole of support (9), upper left the parting on the right side of central tube (10) in the outside of support (9) do not installed ratchet (11), support (9) is upper is hinged with by pivot pin (13) tooth bar (12) matching with ratchet (11), tooth bar (12) can be up and down around pivot pin (13), when ratchet (11) is mutually meshing with tooth bar (12), central tube (10) can only be to a direction rotation, on central tube (10), be fixed with rope hook (14), the upper one end of central tube (10) in support (9) outside offers the circular hole (15) for inserting boosting-rod (16), by sleeve valve (6), to Fibre Bag (1) internal pressure slip casting, Fibre Bag (1) expansion slurry (19) condensation cure is anchored in good ground, the Fibre Bag (1) of not slip casting section is twisted into rope form through backing plate (7), and it is upper that euphroe (8) is fixed on backing plate (7) by bolt (18), and rope form Fibre Bag (1) is bundled on the rope hook (14) of euphroe (8), boosting-rod (16) inserts in the circular hole (15) of central tube (10), rotates boosting-rod (16) and makes rope form Fibre Bag (1) be wrapped in central tube (10) above, stretch-draw Fibre Bag (1), ratchet (11) and the mutually meshing locking anchoring of tooth bar (12).
2. auto-lock anchorage fiber anchor rod according to claim 1, is characterized in that: the material of Fibre Bag (1) is glass fibre, or carbon fiber, or aramid fiber.
3. auto-lock anchorage fiber anchor rod according to claim 1, it is characterized in that: the support (9) of euphroe (8) is upper with connecting plate and bolt hole (17), the size of both sides ratchet (11) and tooth bar (12) is identical, and be symmetrically arranged, ratchet (11) diameter is less than the width of support (9) middle part part in parallel; Circular hole (15) number of offering on central tube (10) is four, layout in 90 ° separately.
4. auto-lock anchorage fiber anchor rod according to claim 1, is characterized in that: sleeve valve (6) is rubber sleeve valve.
5. the construction method of auto-lock anchorage fiber anchor rod, the steps include:
(1) investigation and analysis Supporting Object engineering geological condition, carries out engineer geological prospecting and design, and the potential sliding surface position that Analysis deterrmination may come down is determined free segment and the anchoring section length of required anchor pole;
(2) make locating rack (2): locating rack (2) is welded cylinder (4) and reinforced steel bar ring by dowel (3), cylinder (4) outside turning has screw thread; The length of dowel (3) equals the anchoring section length of required anchor pole;
(3) make Fibre Bag (1): according to length, thickness and the diameter of the selected required Fibre Bag (1) of step (1), the upper oversleeve valve (6) of cylinder (4) in locating rack (2), locating rack (2) is stretched in Fibre Bag (1), one end of cylinder (4), towards Fibre Bag (1) openend, is located outside by Fibre Bag (1) at the cylinder (4) of locating rack (2) by metal clamps (5) and is closely clamped;
(4) make euphroe (8): on central tube (10), offer circular hole (15), processing is with the support (9) of connecting plate and bolt hole (17), support (9) is upper is hinged with tooth bar (12) by pivot pin (13), central tube (10) is enclosed within support (9) to the upper symmetrical ratchet (11) of installing of central tube (10) in support (9) outside;
(5) hole-opening (20) and slip casting: above offer hole (20) by design length and angle at slope body (21); Grouting Pipe puts in Fibre Bag (1), and be connected by external screw thread with the cylinder (4) of locating rack (2), Grouting Pipe and Fibre Bag (1) are together stretched in hole (20), the Grouting Pipe other end is connected with grouting equipment, determines grouting pressure according to different stratum conditions, carries out slip casting, slurry (19) flow through successively Grouting Pipe, sleeve valve (6) enter in Fibre Bag (1), Fibre Bag (1) expands, and grouting design value to be reached, by Grouting Pipe removal from locating rack (2); Slurry (19) is setting and hardening in Fibre Bag (1), is anchored in good ground; The single effect of sleeve valve (6), slurry (19) is wrapped in Fibre Bag (1) and is difficult to flow everywhere, avoids free segment Fibre Bag (1) to be solidified by slurry (19);
(6) stretch-draw and anchoring: the Fibre Bag of not slip casting section (1) is twisted into rope form and passes domatic backing plate (7); It is upper that euphroe (8) is fixed on backing plate (7) by bolt (18), and rope form Fibre Bag (1) is bundled on the rope hook (14) of euphroe (8); Boosting-rod (16) inserts in the circular hole (15) of euphroe (8), and rotate boosting-rod (16) rope form Fibre Bag (1) and be wrapped in central tube (10) above, after stretch-draw is tightened, ratchet (11) and the mutually meshing locking of tooth bar (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510157537.3A CN104695435B (en) | 2015-04-07 | 2015-04-07 | A kind of auto-lock anchorage fiber anchor rod and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510157537.3A CN104695435B (en) | 2015-04-07 | 2015-04-07 | A kind of auto-lock anchorage fiber anchor rod and construction method |
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| Publication Number | Publication Date |
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| CN104695435A CN104695435A (en) | 2015-06-10 |
| CN104695435B true CN104695435B (en) | 2016-05-25 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3815368A (en) * | 1973-07-19 | 1974-06-11 | L Turzillo | Method for installing concrete anchor piles in situ |
| CN2389247Y (en) * | 1999-07-20 | 2000-07-26 | 贵州华电建设工程接头技术有限责任公司 | Self-locking type ground tackle |
| CN102720196A (en) * | 2012-06-26 | 2012-10-10 | 浙江省交通规划设计研究院 | Anticorrosive anchor rod capable of preventing slurry from leaking |
| CN202866840U (en) * | 2012-09-05 | 2013-04-10 | 淮南市顺辉锚固有限公司 | Full-thread glass fiber composite hollow grouting anchor rod |
| CN203701105U (en) * | 2014-01-21 | 2014-07-09 | 山东正元建设工程有限责任公司 | Fiber bag grouting expanding body prestressed anchor |
-
2015
- 2015-04-07 CN CN201510157537.3A patent/CN104695435B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3815368A (en) * | 1973-07-19 | 1974-06-11 | L Turzillo | Method for installing concrete anchor piles in situ |
| CN2389247Y (en) * | 1999-07-20 | 2000-07-26 | 贵州华电建设工程接头技术有限责任公司 | Self-locking type ground tackle |
| CN102720196A (en) * | 2012-06-26 | 2012-10-10 | 浙江省交通规划设计研究院 | Anticorrosive anchor rod capable of preventing slurry from leaking |
| CN202866840U (en) * | 2012-09-05 | 2013-04-10 | 淮南市顺辉锚固有限公司 | Full-thread glass fiber composite hollow grouting anchor rod |
| CN203701105U (en) * | 2014-01-21 | 2014-07-09 | 山东正元建设工程有限责任公司 | Fiber bag grouting expanding body prestressed anchor |
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| CN104695435A (en) | 2015-06-10 |
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