CN103774791A - FRP bar connection device, connection method and anchor rod - Google Patents
FRP bar connection device, connection method and anchor rod Download PDFInfo
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- CN103774791A CN103774791A CN201210410268.3A CN201210410268A CN103774791A CN 103774791 A CN103774791 A CN 103774791A CN 201210410268 A CN201210410268 A CN 201210410268A CN 103774791 A CN103774791 A CN 103774791A
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- hollow sleeve
- frp muscle
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Abstract
The invention provides an FRP bar connection device. The FRP bar connection device comprises a first hollow casing pipe equipped with a first external channel and an end part external screw thread and a second hollow casing pipe equipped with a second external channel and an end part internal screw thread. The external screw thread and the internal screw thread form a spiral fit. By utilization of a grouting material injected through the first external channel, one end of the FRP bar is tightly fasten with the inner surface of the first hollow casing pipe. By utilization of a grouting material injected through the second external channel, the other end of the FRP bar is tightly fasten with the inner surface of the second hollow casing pipe. The invention also provides an FRP bar connection method and an anchor rod. The cost is lowered effectively without affecting basic performances of the FRP bar and the materials are environmentally friendly.
Description
Technical field
The present invention relates to a kind of FRP muscle linkage, make FRP muscle (comprising GFRP, CFRP, the fibre reinforced plastics such as AFRP) be applied to prestressing force field, solved the technical bottleneck that FRP muscle is applied in civil engineering, make the application of FRP muscle no longer limited.The present invention simultaneously also provides the method for attachment of a kind of FRP muscle and comprises the anchor pole of above-mentioned FRP muscle linkage.
Background technology
Traditional FRP muscle method of attachment is all with adhering with epoxy resin, and the method is used a large amount of epoxy resin and curing compound thereof, not only uneconomical while but also cause a large amount of wastes and environment pollution.The FRP muscle joint that particularly the method is made can not be brought into play the high-strength of FRP muscle, the characteristics such as high-modulus, thus greatly limit the application of FRP muscle.
FRP muscle is as a kind of novel engineering material, at the beginning of being born, just receive project planner's very big concern, in application practice in recent years, engineers and technicians have also proposed various requirement and improvement, but the connection of FRP muscle be engineers and technicians always cannot fine solution a difficult problem, because all require FRP muscle main body destruction in engineering practice, but not FRP muscle joint area, this is also the biggest problem that always cannot break through in engineering application aspect of FRP muscle.
Summary of the invention
The object of the invention is the technical problem of easily destroying in order to solve existing FRP muscle link technique center tap position, the present invention mainly takes following technical scheme.
The invention provides a kind of FRP muscle linkage, comprise the second hollow sleeve that is provided with externally threaded the first hollow sleeve of the first external channel and end, is provided with the second external channel and end internal thread, described external screw thread coordinates with internal thread spiral, the grouting material being injected by described the first external channel makes FRP muscle be anchored on described the first hollow sleeve inner surface, and the grouting material being injected by described the second external channel makes the FRP muscle other end be anchored on described the second hollow sleeve inner surface.
Preferably, the internal diameter of described the first hollow sleeve is than the large 4～5mm of described FRP muscle external diameter, and the internal diameter of described the second sleeve pipe is than the large 4～5mm of described FRP muscle external diameter.
Preferably, described grouting material is the mixture of modified cement and water.Modified cement is a kind of or its combination of soundless cracking agent, expansive cement.Grouting material is the modified cement of environmental protection environmentally safe, makes FRP muscle be anchored on hollow sleeve inner surface by the expansion of modified cement and aqueous mixtures.
Preferably, described the first hollow sleeve is two flow-throughs, triplet type or four-way type.
Preferably, described the second hollow sleeve is two flow-throughs, triplet type or four-way type.
The present invention also provides the method for attachment of a kind of FRP muscle, comprises the steps:
A. described the first hollow sleeve and the second hollow sleeve are by external screw teeth and internal screw thread screw-tightened;
B. prepare the grouting material of modified cement and water;
C. the first hollow sleeve inner surface is inserted in described FRP muscle one end, and a described FRP muscle other end inserts the second hollow sleeve inner surface;
D. described grouting material injects the first hollow sleeve and the second hollow sleeve by described the first external channel and the second external channel respectively, makes described FRP muscle be anchored on the first hollow sleeve and the second hollow sleeve inner surface.Above-mentioned a step, b step, c step do not have sequencing each other.
The present invention also provides a kind of anchor pole that comprises above-mentioned FRP linkage.
With respect to prior art, the invention has the beneficial effects as follows: linkage, method of attachment and anchor pole, not affecting under the prerequisite of FRP muscle key property, effectively reduce cost materials environmental protection.
Accompanying drawing explanation
Fig. 1 is the sectional view of FRP muscle linkage;
Fig. 2 is the sectional view of the first hollow sleeve;
Fig. 3 is the sectional view of the second hollow sleeve one embodiment;
Fig. 4 is the sectional view of second another embodiment of hollow sleeve.
In Fig. 1 to Fig. 4: the first hollow sleeve 10; The first external channel 12; External screw thread 14; The second hollow sleeve 20; The second external channel 22; Internal thread 24; FRP muscle 30; Grouting material 40.
The specific embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is explained in detail.
FRP is the abbreviation of Fiber Reinforced polymer (fiber reinforced material), generally comprises GFRP, CFRP, the fibre reinforced plastics such as AFRP.
A kind of FRP muscle linkage, the parts that relate to comprise the first hollow sleeve 10 and the second hollow sleeve 20.As shown in Figure 2, first hollow sleeve 10 one end are provided with external screw thread 14, consider there are one or more through holes on inwall according to the consumption of grouting material and efficiency, and Figure 2 shows that two through holes, and through hole forms first external channel 12 that can inject grouting material.As shown in Figure 3, second hollow sleeve 20 one end are provided with internal thread 24, internal thread 24 coordinates with external screw thread 14 spirals of the first hollow sleeve 10, consider there are one or more through holes on the second hollow sleeve 20 inwalls according to the consumption of grouting material and efficiency, be illustrated in figure 3 two through holes, be illustrated in figure 44 through holes, through hole forms second external channel 22 that can inject grouting material.The material of described the first hollow sleeve 10 and the second hollow sleeve 20 is the metal or alloy such as iron, stainless steel, generally selects that quality is light, intensity is large, convenient transportation and installing.FRP muscle linkage of the present invention makes the intensity of spiral cooperation place, FRP muscle and the hollow sleeve inner surface junction of internal thread 24 and external screw thread 14 all be greater than the intensity of FRP muscle body, thereby guarantees that fracture occurs in FRP muscle body, engineering demands.
As shown in Figure 1, the invention provides a kind of FRP muscle linkage, two many above FRP muscle 30 are connected.FRP muscle 30 linkages comprise be provided with the first external channel 12 and end external screw thread 14 the first hollow sleeve 10, be provided with the second hollow sleeve 20 of the second external channel 22 and end internal thread 24, described external screw thread 14 coordinates with internal thread 24 spirals, the grouting material 40 being injected by described the first external channel 12 makes FRP muscle 30 be anchored on described the first hollow sleeve 10 inner surfaces, and the grouting material 40 being injected by described the second external channel 22 makes FRP muscle 30 other ends be anchored on described the second hollow sleeve 20 inner surfaces.Described grouting material 40 is the mixture of modified cement and water.Modified cement is a kind of or its combination of soundless cracking agent, expansive cement.The modified cement that grouting material 40 is environmental protection environmentally safe, makes FRP muscle 30 be anchored on hollow sleeve inner surface by the expansion of modified cement and aqueous mixtures.The cost of prior art all-purpose gum stick be 25 yuan/more than kg, the cost of soundless cracking agent using as the present invention is 2 yuan/kg, linkage, not affecting under the prerequisite of FRP muscle 30 key propertys, effectively reduces cost, materials environmental protection.
The internal diameter of the first hollow sleeve 10 is greater than described FRP muscle 30 external diameters, and general, large 2～10mm, is preferably 4～5mm; The internal diameter of described the second hollow sleeve 20 is greater than described FRP muscle 30 external diameters, and general, large 2～10mm, is preferably 4～5mm.The FRP muscle 30 that is arranged so that so conveniently inserts in hollow sleeve, also makes hollow sleeve be applicable to the FRP muscle of different size simultaneously.
The needs that described the first hollow sleeve 10 is connected according to reality with the second hollow sleeve 20 can be set to two flow-throughs, triplet type or four-way type, and if Fig. 2 and Fig. 3 are two-way sleeve pipe, Fig. 4 is tee-joint sleeve.
The present invention also provides the method for attachment of a kind of FRP muscle, comprises the steps:
A. described the first hollow sleeve and the second hollow sleeve are by external screw teeth and internal screw thread screw-tightened;
B. prepare the grouting material of modified cement and water; Described grouting material is the mixture of modified cement and water.Modified cement is a kind of or its combination of soundless cracking agent, expansive cement.
C. the first hollow sleeve inner surface is inserted in described FRP muscle one end, and a described FRP muscle other end inserts the second hollow sleeve inner surface;
D. described grouting material injects the first hollow sleeve and the second hollow sleeve by described the first external channel and the second external channel respectively, leave standstill, make described FRP muscle be anchored on the first hollow sleeve and the second hollow sleeve inner surface by the expansion of modified cement and aqueous mixtures.
Above-mentioned a step, b step, c step do not have sequencing each other, and d step is final step.
The invention still further relates to the anchor pole that comprises above-mentioned FRP muscle linkage, transmit stressing conditions by FRP muscle.
Above content is in conjunction with concrete preferred embodiment further description made for the present invention, can not assert that specific embodiment of the invention is only limited to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (7)
1. a FRP muscle linkage, it is characterized in that: comprise the second hollow sleeve that is provided with externally threaded the first hollow sleeve of the first external channel and end, is provided with the second external channel and end internal thread, described external screw thread coordinates with internal thread spiral, the grouting material being injected by described the first external channel makes FRP muscle one end be anchored on described the first hollow sleeve inner surface, and the grouting material being injected by described the second external channel makes the FRP muscle other end be anchored on described the second hollow sleeve inner surface.
2. FRP muscle linkage according to claim 1, is characterized in that: the internal diameter of described the first hollow sleeve is than the large 4～5mm of described FRP muscle external diameter, and the internal diameter of described the second sleeve pipe is than the large 4～5mm of described FRP muscle external diameter.
3. FRP muscle linkage according to claim 1 and 2, is characterized in that: described grouting material is the mixture of modified cement and water.
4. FRP muscle linkage according to claim 1 and 2, is characterized in that: described the first hollow sleeve is two flow-throughs, triplet type or four-way type.
5. FRP muscle linkage according to claim 1 and 2, is characterized in that: described the second hollow sleeve is two flow-throughs, triplet type or four-way type.
6. the method for attachment of FRP muscle, comprises the steps:
A. described the first hollow sleeve and the second hollow sleeve are by external screw teeth and internal screw thread screw-tightened;
B. prepare the grouting material of modified cement and water;
C. the first hollow sleeve inner surface is inserted in described FRP muscle one end, and a described FRP muscle other end inserts the second hollow sleeve inner surface;
D. described grouting material injects the first hollow sleeve and the second hollow sleeve by described the first external channel and the second external channel respectively, makes described FRP muscle be anchored on the first hollow sleeve and the second hollow sleeve inner surface.
7. an anchor pole, is characterized in that: comprise the FRP muscle linkage described in claim 1-5 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210410268.3A CN103774791A (en) | 2012-10-24 | 2012-10-24 | FRP bar connection device, connection method and anchor rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210410268.3A CN103774791A (en) | 2012-10-24 | 2012-10-24 | FRP bar connection device, connection method and anchor rod |
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| CN103774791A true CN103774791A (en) | 2014-05-07 |
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| CN201210410268.3A Pending CN103774791A (en) | 2012-10-24 | 2012-10-24 | FRP bar connection device, connection method and anchor rod |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805841A (en) * | 2015-02-28 | 2015-07-29 | 河海大学 | FRP rib anchor rod anchoring head capable of applying prestress |
| CN108316562A (en) * | 2018-04-08 | 2018-07-24 | 李藏柱 | Closed-entry reinforcing steel bar connecting sleeve tube and its connection structure and its installation method |
| CN108442534A (en) * | 2018-05-09 | 2018-08-24 | 李藏柱 | A kind of connecting node and its construction method of steel column/beam and prefabricated board |
| CN108442512A (en) * | 2018-04-25 | 2018-08-24 | 李藏柱 | A kind of prefabricated post/beam and its connection structure and its construction method |
| CN109083899A (en) * | 2017-06-13 | 2018-12-25 | 三菱电机株式会社 | Fastening method, FRP fastening structure and the elevator structural elements of FRP |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805841A (en) * | 2015-02-28 | 2015-07-29 | 河海大学 | FRP rib anchor rod anchoring head capable of applying prestress |
| CN104805841B (en) * | 2015-02-28 | 2016-11-30 | 河海大学 | A kind of prestressed FRP rebar anchor pole anchor head |
| CN109083899A (en) * | 2017-06-13 | 2018-12-25 | 三菱电机株式会社 | Fastening method, FRP fastening structure and the elevator structural elements of FRP |
| CN109083899B (en) * | 2017-06-13 | 2021-02-19 | 三菱电机株式会社 | FRP fastening method, FRP fastening structure, and structural member for elevator |
| CN108316562A (en) * | 2018-04-08 | 2018-07-24 | 李藏柱 | Closed-entry reinforcing steel bar connecting sleeve tube and its connection structure and its installation method |
| WO2019196742A1 (en) * | 2018-04-08 | 2019-10-17 | 李藏柱 | Shrunk reinforcing bar connecting sleeve cylinder, connecting structure of same, and mounting method therefor |
| CN108442512A (en) * | 2018-04-25 | 2018-08-24 | 李藏柱 | A kind of prefabricated post/beam and its connection structure and its construction method |
| CN108442512B (en) * | 2018-04-25 | 2024-04-23 | 李藏柱 | Prefabricated column/beam and connecting structure and construction method thereof |
| CN108442534A (en) * | 2018-05-09 | 2018-08-24 | 李藏柱 | A kind of connecting node and its construction method of steel column/beam and prefabricated board |
| CN108442534B (en) * | 2018-05-09 | 2024-03-19 | 李藏柱 | Connecting node of steel column/beam and precast slab and construction method thereof |
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Application publication date: 20140507 |