CN1771374A - Fixing jig structure of high-strength wire material - Google Patents
Fixing jig structure of high-strength wire material Download PDFInfo
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- CN1771374A CN1771374A CN 200480009314 CN200480009314A CN1771374A CN 1771374 A CN1771374 A CN 1771374A CN 200480009314 CN200480009314 CN 200480009314 CN 200480009314 A CN200480009314 A CN 200480009314A CN 1771374 A CN1771374 A CN 1771374A
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- 239000000463 material Substances 0.000 title claims description 65
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 94
- 239000010959 steel Substances 0.000 claims abstract description 94
- 230000002093 peripheral effect Effects 0.000 claims description 82
- 230000011218 segmentation Effects 0.000 claims description 25
- 239000004567 concrete Substances 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 abstract 1
- 239000011513 prestressed concrete Substances 0.000 description 98
- 239000012141 concentrate Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 231100000241 scar Toxicity 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 208000002193 Pain Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000013138 pruning Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
- E04C5/122—Anchoring devices the tensile members are anchored by wedge-action
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- Reinforcement Elements For Buildings (AREA)
Abstract
The invnetion provides a fixing jig structure for high-strength wires. The angle beta between the tapered outer circumferential surface(11) of a split male cone (5) and the central axis C is preferably set larger by 0.3 DEG -0.6 DEG than the angle alpha between the tapered inner circumferential surface(16) of a female receiving metal (17) and the central axis C. On the tapered outer circumferential surface (11) of a split male cone (5), a frictional securing part (7) to a PC steel strand of a predetermined length from the forward end part and a wedge type securing part (9) are provided. Furthermore, a beveled connecting part (1), an arcuate connecting part (2), and the like, are provided at the internal corner part (20) of the tapered inner circumferential surface(11) of the split male cone (5) and its circumferential split end face (19).
Description
Technical field
The present invention relates in building fields such as PC (prestressed concrete) bridge deck (bed version) and PC bridges, or in the building fields such as PC beam and PC floor, be used for fixing the PC steel that uses in order in concrete, the to import compressive force fixing jig structure of high intensity line material such as twist thread.
Background technology
In general, the PC steel wire uses because of following purpose, promptly when concrete member is made, in molding box, arrange reinforcing bar, behind concrete pilings, after hardening of concrete in advance, by stretching and fixing two ends, pay concrete with compressive force, concrete is realized the concrete member of the high endurance of high strength with respect to the very difficult be full of cracks of external force.As the parts or the structure that use such PC steel wire, be used in the PC bridge deck and the PC bridge in bridge field more.In addition, in building field, also be used in PC beam, PC floor etc.
In the past, the known circular cone that Splittable anchor cone or flat pattern are arranged, it is the taper outer peripheral face that tilts in the mode towards the leading section undergauge having, the Splittable band awl anchor cone sheet (Splittable key) of cutting apart frusto-conical that on the cylindric inner peripheral surface of Splittable, possesses simultaneously internal tooth, (for example, open the 2002-242437 communique along circumferentially disposing with interval to constitute with reference to the spy of Japan, the spy of Japan opens the 2001-349001 communique, the spy of Japan opens the 2000-202822 communique, the spy of Japan opens flat 11-1995 communique, the spy of Japan opens flat 11-210227 communique).
As such Splittable anchor cone (male コ one Application of Splittable), as Figure 11 A, shown in the 11B, the Splittable anchor cone (Splittable wedge) 15 that use is made of a plurality of Splittable anchor cone sheet 15a, wherein Splittable anchor cone sheet 15a has the taper outer peripheral face 11 that tilts in the mode towards the leading section undergauge and has slit 12 as required, simultaneously on the roughly total length from the leading section to the rearward end, has internal tooth 14 cutting apart on the cylindric inner peripheral surface 13, in addition, as Figure 12 A, shown in the 12B, use has the former supporting member 17 of the taper inner peripheral surface 16 that tilts in the mode towards the leading section undergauge, as shown in figure 13, fixing twist thread 18 the anchor clamps 22 of PC steel of known stretching.
In this mode shown in Figure 13, since the taper outer peripheral face 11 of Splittable anchor cone 15 with central axis C angulation α, with the taper inner peripheral surface 16 of former supporting member 17 be identical angle of slope with central axis C angulation α, therefore twist thread 18 the time when control the slotting PC steel that has led to former supporting member 17 by the Splittable anchor cone 15 that is pressed into former supporting member 17, on the PC steel is twisted thread the big this point of 18 binding force is desirable, but, the mode clamping of leading section at Splittable anchor cone 15 to bite, to rearward end, chucking power dies down from the pars intermedia of Splittable anchor cone 15.
Further specify and be exactly, since the taper outer peripheral face 11 of Splittable anchor cone 15 with central axis C angulation α, with the differential seat angle with central axis C angulation α of the taper inner peripheral surface 16 of former supporting member 17 be zero degree, therefore shown in the curve a of the curve map of Figure 10, at Splittable anchor cone 15 leading sections, the axial stress on PC steel wire surface, stress is concentrated, be the highest, when leaving a little from leading section when a bit, the axial stress on PC steel wire surface just sharply reduces.
Therefore, the twist thread axial stress of 18 PC steel wire 3 (with reference to Figure 14 A) of the PC steel of fixed part, axial pars intermedia at Splittable anchor cone 15, whether no matter internal tooth 14 arranged, it all is the big form of the concentrated change of leading section stress in the inserting side of Splittable anchor cone 15, in this part, might produce because of the leading section internal tooth 14 of Splittable anchor cone 15 and bite, and be easy to generate the brittle fracture of PC steel wire 3 (or the PC steel twists thread 18).Thereby hope is also born at the internal tooth 14 of the axial pars intermedia of Splittable anchor cone 15, the axial stress of PC steel wire 3 is concentrated at the leading section stress of Splittable anchor cone 15, and made its axial dispersion along Splittable anchor cone 15.
In addition, recently, wish to reduce cost, realize laborsavingization construction by PC steel wire 3 high strengths are reduced the construction radical.But, when using high-intensity PC steel wire 3,, exist PC steel wire 3 because of not producing pull and stretch disconnection (situation that attenuates and disconnect) brittle fracture with aforementioned stationary fixture 22 like that in the past, in addition, the problem that the fatigue durability of PC steel wire 3 becomes lower.This be since with in the past 2, the following high-strength PC steel of 000MPa or its is twisted thread and is compared, intensity is higher, therefore must further firmly fix clamping PC steel with the Splittable anchor cone with internal tooth (being the Splittable wedge) 15 and twist thread 18 and the problem that produces.
In addition, as shown in Figure 14B, if the cylindric inner peripheral surface 13 of Splittable anchor cone 15 and the inner corner portion 20 of circumferentially cutting apart end face (peripheral side end face) 19 are made as bight 21, aforementioned corner 21 is stung on the PC steel is twisted thread 18 PC steel wire 3, cause damage 23 just for PC steel wire 3, PC steel wire 3 is fracture ahead of time probably, and fixed efficiency might step-down.At this, so-called fixed efficiency is to use recently representing of tension failure load breaking load, independent with respect to the PC steel wire when stationary fixture being set and having carried out tension test.Moreover, in fixed efficiency, the situation of using JIS specification intensity is arranged and uses actual strength (real Strong degree) situation.
Summary of the invention
Therefore, the object of the present invention is to provide and to avoid aforementioned problem points in the past, promptly concentrate because of the axial stress on extremely the surface of biting the PC steel wire that clamping causes at Splittable anchor cone leading section, by twisting thread to pars intermedia clamping PC steel from Splittable anchor cone leading section, the axial stress on the surface of PC steel wire is disperseed along axial large tracts of land, thereby twist thread integral body partly and improve fixed efficiency as the PC steel of the part that is held, in addition, go for that in the past PC steel is twisted thread or the fixing jig structure of the high-strength wire material that the PC steel of superhigh intensity is twisted thread.
The fixing jig structure of high-strength wire material of the present invention a kind of, it is the tapered stretching fixing jig structure that uses on the high-strength wire material that compressive force uses in that concrete is paid, it is characterized in that, make the Splittable anchor cone the taper outer peripheral face with the central axis angulation, greater than in the taper inner peripheral surface of former supporting member with axle line angulation.
In addition, other feature as the fixing jig structure of high-strength wire material of the present invention, be to make previous segmentation type anchor cone the taper outer peripheral face with the central axis angulation, than the taper inner peripheral surface of aforementioned former supporting member with the big angle of central axis angulation more than or equal to 0.3 degree smaller or equal to the scope of 0.6 degree in this point.
In addition, other feature as the fixing jig structure of high-strength wire material of the present invention, be on the inner peripheral surface of previous segmentation type anchor cone, begin to have friction-type fixed part certain-length and high-strength wire material from its leading section, and have then and wedge type fixed part this point high-strength wire material.
In addition, other feature as the fixing jig structure of high-strength wire material of the present invention, be on the inner peripheral surface of previous segmentation type anchor cone, to have, begin friction-type fixed part certain-length and high-strength wire material from its leading section, and have then and wedge type fixed part high-strength wire material, and, between aforementioned friction-type fixed part and aforementioned wedge type fixed part, have the apsacline wedge portion this point of the taper of distolateral backward undergauge gradually.
In addition, other feature as the fixing jig structure of high-strength wire material of the present invention, be circumferentially to cut apart the inner corner portion of end face, be provided with chamfering connecting portion or circular-arc connecting portion this point at the inner peripheral surface that is divided into a plurality of previous segmentation type anchor cones along circumferencial direction and its.
In addition, other feature as the fixing jig structure of high-strength wire material of the present invention, be to be divided into the inner peripheral surface of a plurality of previous segmentation type anchor cones and it circumferentially cuts apart end face along circumferencial direction, in the portion of the internal tooth mountain of the inner peripheral surface that is connected previous segmentation type anchor cone under the tangent line state, and via with along with near cutting apart section and gradually connecting this point to the inclined plane that the mode of radial direction outside hole enlargement tilts.
In addition, other the feature as the fixing jig structure of high-strength wire material of the present invention is that aforementioned high-strength wire material is more than or equal to 2, the high-strength PC steel of the 000MPa this point of twisting thread.
The fixing jig structure of high-strength wire material of the present invention a kind of, it is the tapered stretching fixing jig structure that uses on the high-strength wire material that compressive force uses in that concrete is paid, it is characterized in that, on Splittable anchor cone inner peripheral surface, have from its leading section and begin friction-type fixed part certain-length and high-strength wire material, and have then and wedge type fixed part high-strength wire material.
In addition, other feature as the fixing jig structure of high-strength wire material of the present invention, be to begin friction-type fixed part certain-length and high-strength wire material at leading section from the inner peripheral surface of aforementioned Splittable anchor cone, and between the wedge type fixed part that follow and high-strength wire material, have towards the rear end side apsacline wedge portion this point of the taper of undergauge gradually.
In addition, as other feature of the fixing jig structure of high-strength wire material of the present invention, be on the inner peripheral surface that is divided into a plurality of previous segmentation type anchor cones along circumferencial direction and its are circumferentially cut apart the inner corner portion of end face, to be provided with chamfering connecting portion or circular-arc connecting portion this point.
In addition, other feature as the fixing jig structure of high-strength wire material of the present invention, be to be divided into the inner peripheral surface of a plurality of previous segmentation type anchor cones and it circumferentially cuts apart end face along circumferencial direction, in the portion of the internal tooth mountain of the inner peripheral surface that is connected previous segmentation type anchor cone under the tangent line state, and via with along with near cutting apart section and gradually connecting this point to the inclined plane that the mode of radial direction outside hole enlargement tilts.
In addition, other the feature as the fixing jig structure of high-strength wire material of the present invention is that aforementioned high-strength wire material is more than or equal to 2, the high-strength PC steel of the 000MPa this point of twisting thread.
Description of drawings
Figure 1A is a part of vertical profile lateral view of the Splittable anchor cone of the 1st embodiment of the present invention.
Figure 1B is the rear elevation from the right-hand Splittable anchor cone of seeing of Figure 1A.
Fig. 2 amplifies the vertical profile lateral view of showing with the part of Splittable anchor cone sheet.
Fig. 3 A is a vertical profile lateral view of showing an embodiment of former supporting member.
Fig. 3 B is the rear elevation from the right-hand former supporting member of seeing of Fig. 3 A.
Thereby Fig. 4 is pressed into the fixedly vertical profile lateral view under the PC steel state of twisting thread of former supporting member with anchor cone.
Fig. 5 is the figure of anchor cone supporting member in the exploded view 4 and anchor cone and the PC steel relation of twisting thread.
Fig. 6 A is the figure that shows the state in a part that the PC steel is twisted thread and the inboard bight of anchor cone, is the figure of the situation of having showed the inboard bight of anchor cone chamfer machining.
Fig. 6 B is the figure that shows the state in a part that the PC steel is twisted thread and the inboard bight of anchor cone, is the figure that shows the situation of the inboard bight R processing of anchor cone.
Fig. 7 A is a vertical profile lateral view of showing the Splittable anchor cone of the 2nd embodiment of the present invention.
Fig. 7 B is the rear elevation from the right-hand Splittable anchor cone of seeing of Fig. 7 A.
Fig. 8 amplifies the vertical profile lateral view of showing with the part of Splittable anchor cone sheet.
Fig. 9 A is the vertical profile lateral view of the Splittable anchor cone of the 3rd embodiment of the present invention.
Fig. 9 B is the rear elevation from the right-hand Splittable anchor cone of seeing of Fig. 9 A.
Figure 10 is when showing the Splittable anchor cone of the angle of slope of the taper outer peripheral face make the Splittable anchor cone or taper outer peripheral face with differential seat angle the angle of slope of the taper inner peripheral surface of former supporting member more than identical with the angle of slope of the taper inner peripheral surface of former supporting member, with the curve map of the axial stress on the corresponding steel wire of anchor cone axial location surface.
Figure 11 A is a part of vertical profile lateral view of Splittable anchor cone in the past.
Figure 11 B is the rear elevation from the right-hand Splittable anchor cone of seeing of Figure 11 A.
Figure 12 A is the vertical profile lateral view of an embodiment of former supporting member in the past.
Figure 12 B is the rear elevation from the right-hand former supporting member of seeing of Figure 12 A.
Figure 13 is pressed into behind the former supporting member vertical profile lateral view under the state that fixing PC steel twists thread with the Splittable anchor cone.
Figure 14 A is the figure of the relation of showing that former supporting member among Figure 13 and Splittable anchor cone and PC steel are twisted thread.
Figure 14 B is the figure that the state on steel wire is stung in the inboard bight of displaying Splittable anchor cone.
The specific embodiment
Below enumerate embodiment and explain the present invention, the invention is not restricted to these embodiments certainly.But, feature of the present invention, character and various interests, the detailed explanation by accompanying drawing and following better embodiment and clearer and more definite.
(the 1st embodiment)
In Figure 1A, 1B, showed an embodiment of the Splittable anchor cone 5 that in the fixing jig structure of high-strength wire material of the present invention, uses.This Splittable anchor cone 5, be will be hollow frusto-conical shape body along grade each Splittable anchor cone sheet 6 of the band awl that is divided into a plurality of modes of circumferencial direction 2 minutes (illustrated situation) or 3, the equal angles compartment of terrain disposes and constitutes, each Splittable anchor cone sheet 6 has the taper outer peripheral face 11 that tilts in the mode towards the leading section undergauge and has slit 12 as required.
The taper outer peripheral face 11 of previous segmentation type anchor cone 5 with central axis C angulation β, be set at big than the taper inner peripheral surface 16 of the aftermentioned former supporting member 17 that becomes concentric shape ground configuration with it with central axis C angulation α, for example, in spending smaller or equal to the scope of 0.6 degree, set significantly more than or equal to 0.3.
The taper outer peripheral face 11 of previous segmentation type anchor cone 5 with central axis C angulation β, with taper inner peripheral surface 16 and differential seat angle central axis C angulation α of former supporting member 17 (A=β-α), if surpass 0 degree, just has the effect that near the stress of PC steel wire 3 parts the leading section that relaxes Splittable anchor cone 6 is concentrated.But (if A=is β-α) less than 0.3 degree, then near the alleviation effects concentrated of the stress of PC steel wire 3 parts the leading section of Splittable anchor cone 6 is less, therefore it is desirable to preferably differential seat angle A=β-α is set at more than or equal to 0.3 degree for differential seat angle.
In addition, the taper outer peripheral face 11 of previous segmentation type anchor cone 5 with central axis C angulation β, with taper inner peripheral surface 16 and differential seat angle central axis C angulation α of former supporting member 17 (A=β-α), if more than 0.6 degree, then be difficult to be fixed on the taper inner peripheral surface 16 of former supporting member 17, therefore on reality is used, preferably differential seat angle A=β-α is set at smaller or equal to 0.6 degree.
In the Splittable anchor cone 5 of illustrated mode, as shown in Figure 2, the cylindric inner peripheral surface 13 of Splittable, on the circular-arc inner peripheral surface of its leading section side, begin to possess certain-length from leading section with twist thread 18 friction-type fixed part 7 of PC steel, play rearward end from axial pars intermedia, possess along the wedge type fixed part 9 of the internal tooth 14 of a plurality of parallel wedge type flute profile that axially has predetermined space.Moreover so-called wedge type fixed part is the internal tooth with wedge type, thereby bites and fixing twist thread 18 part of PC steel.
Aforesaid friction-type fixed part 7, be that section is circular-arc, and radius of curvature is certain inner peripheral surface in the axial direction, thereby be to be crimped on the twist thread friction-type ground crimping on 18 the outer peripheral face of PC steel to control twist thread 18 part of PC steel, also can be the friction-type fixed part 7 of surface not being made asperities, can also make fixing glass sheet from the teeth outwards and make the friction-type fixed part 7 of asperities.When being provided with friction-type fixed part 7 like this, promptly use friction-type fixed part 7 to control the PC steel and twist thread, also can prevent to concentrate at the axial stress on the PC steel wire surface of wedge type fixed part 9 leading sections.Moreover the length dimension of aforementioned friction-type fixed part 7 can suitably be set according to design.Under the situation that is provided with aforementioned friction-type fixed part 7, no matter the taper outer peripheral face 11 of previous segmentation type anchor cone 5 with central axis C angulation β, with taper inner peripheral surface 16 and differential seat angle central axis C angulation α of former supporting member 17 (under the such as described above situation of A=β-α), perhaps, (A=β-α) is under the situation of 0 degree as in the past, can prevent to concentrate at the axial stress on the PC steel wire surface of Splittable anchor cone 5 leading sections at differential seat angle.
Aforesaid wedge type fixed part 9, be to control the PC steel reliably to twist thread 18 and the bigger part of binding force, constitute the internal tooth 14 of this wedge type fixed part 9, be to the side-prominent mountain portion 4 of internal diameter with along the paddy portion 4c of circumferencial direction along the circumferencial direction of inner face to the outside diameter depression, internal tooth 14 along the wedge type that axially forms across, form the inclined-plane of both sides of the mountain portion 4 of internal tooth 14, the inclined-plane 4a that is made as front than the inclined-plane 4b of rear end side more on the inclined-plane that axially slowly tilts.
Inner peripheral surface 13 at the Splittable anchor cone sheet 6 that is divided into a plurality of Splittable anchor cones 5 along aforementioned circumferencial direction, circumferentially cut apart the inner corner portion (circumferential inboard bight) 20 of end face (circumferential side end face) 19 with it, be provided with chamfering connecting portion 1 (with reference to Figure 1B, Fig. 5, Fig. 6 A), perhaps circular-arc connecting portion 2 (with reference to Fig. 6 B).By in inner corner portion 20 chamfering connecting portion 1 or circular-arc connecting portion 2 being set like this, preventing that inner corner portion 20 stings on the PC steel is twisted thread 18 PC steel wire 3, and prevent from PC steel wire 3, to produce scar, and prevent the brittle fracture of PC steel wire 3.
In Fig. 3 A, 3B, showed the former supporting member 17 of an embodiment that uses in the present invention.This former supporting member 17 is modes of the former supporting member 17 that is made of cylindrical sleeve, has the taper inner peripheral surface 16 that becomes the pinnacle shape towards the leading section undergauge.As narrating, aforementioned taper inner peripheral surface 16 with central axis C angulation α, be set at little than the taper outer peripheral face 11 of Splittable anchor cone 15 with central axis C angulation β.Aforementioned taper inner peripheral surface 16 with central axis C angulation α, if be set at big than the taper outer peripheral face 11 of Splittable anchor cone 15 with central axis C angulation β, become big nipping of Splittable anchor cone leading section, concentrate and increase at twist thread 18 stress of the PC steel of Splittable anchor cone leading section, undesirable.Moreover, in illustrated mode, showed the former supporting member 17 that the cylindrical sleeve by the taper inner peripheral surface 16 with a pinnacle shape constitutes, also be same even the compartment of terrain has the former supporting member (omitting diagram) of the taper inner peripheral surface 16 of a plurality of pinnacles shape.
In Fig. 4 and Fig. 5, showed and used aforementioned former supporting member 17 and Splittable anchor cone 5 twist thread 18 the state of fixing PC steel that stretches, former supporting member 17 is supported by a pressing plate 8, via a pressing plate 8 to omitting illustrated concrete importing compressive force.
At this, with reference to the Figure 10 that shows the numerical analysis result, to the taper outer peripheral face 11 that makes Splittable anchor cone 5 with central axis C angulation β, from the α degree (for example, 7 degree) become α+0.2 degree, α+0.3 degree, α+0.6 degree, α+0.9 degree successively, and (for example being made as necessarily with the taper inner peripheral surface 16 of former supporting member 17 with central axis C angulation α, 7 degree) under the situation, describe with respect to the axial stress on surface total length 65mm, PC steel wire 3 of the Splittable anchor cone sheet 6 that on entire axial length, possesses internal tooth 14.
The taper outer peripheral face 11 of Splittable anchor cone 5 with central axis C angulation β, (A=β-α) is under the situation of zero degree, and is such as described above, is curve a with taper inner peripheral surface 16 and differential seat angle central axis C angulation α of former supporting member 17, differential seat angle A is 0.2 degree, being curve b, is 0.3 degree, is curve c, it is 0.6 degree, being curve d, is 0.9 degree, is curve e.
Show from this curve map, as putting down in writing in the explanation in the past, under the situation of differential seat angle (A=β-α=0.00 degree), at the PC steel wire binding force of Splittable anchor cone leading section big (2700MPa), more satisfactory, but because axial stress concentrates on the PC steel wire surface of Splittable anchor cone leading section, therefore at Splittable anchor cone leading section, be the state of stinging tightly on the PC steel wire, on the PC steel wire, produce easily and bite, and the fragility fracture.In addition, when leaving a little from leading section when a bit, the axial stress on PC steel wire surface just reduces sharp.And then, in Splittable anchor cone rearward end, become the bigger negative axial stress (state that 1000MPa) works.
Relative therewith, (A=β-α) becomes greatly 0.2 degree (curve b), 0.3 degree (curve c), 0.6 degree (curve d), 0.9 degree (curve e) gradually along with aforementioned differential seat angle, the axial stress that demonstrates the PC steel wire surface of Splittable anchor cone leading section is relaxed, the axial stress on the PC steel wire surface of Splittable anchor cone pars intermedia increases in addition, and then, also diminish in the negative axial stress of the PC steel wire of Splittable anchor cone rearward end.
Hence one can see that, avoided the concentrating of axial stress on the PC steel wire surface of Splittable anchor cone leading section, for example, when the axial stress on the PC steel wire, wanted more than or equal to the PC steel wire surface of 1860MPa, aforementioned differential seat angle (A=β-α), as long as select 0.3 degree (curve c), 0.6 degree (curve d), 0.9 degree (curve e).But, aforementioned differential seat angle (A=β-when α) being 0.9 degree (curve e), though there be not the concentrating of axial stress on the PC steel wire surface of Splittable anchor cone leading section, but because the binding force of PC steel wire 3 is the degree that surpass 2000MPa, therefore with respect to 1860MPa little or nothing leeway, when changing for a certain reason, just might lose the binding force (it is following to become 1860Mpa) of the PC steel wire of expectation, therefore (A=β-α) preferably adopt 0.6 degree (curve d), this matches with the boundary that is pressed into the differential seat angle of Splittable anchor cone aforementioned differential seat angle.
In addition, the twist thread axial stress of fixed part of 18 PC steel wire 3 of PC steel, internal tooth 14 at the axial pars intermedia of Splittable anchor cone 5 is also born, the axial stress of PC steel wire 3 can not concentrated at the leading section stress of Splittable anchor cone 15, and make its axial dispersion, thereby can make its axial dispersion transmission along PC steel wire 3 along Splittable anchor cone 5.
(the 2nd embodiment)
Secondly, with reference to Fig. 7 A, 7B and Fig. 8, the Splittable anchor cone 5 that uses in the fixing jig structure of the 2nd embodiment of the present invention is described.Moreover, with the corresponding figure of Fig. 4,, therefore omitted if become same figure just replaced Splittable anchor cone 5.
This embodiment, be to be made as twist thread 18 friction-type fixed part 7 of the PC steel that begins at certain-length from the leading section of the inner peripheral surface 13 of each Splittable anchor cone sheet 6 of constituting Splittable anchor cone 5, and ensuing and PC steel twists thread between 18 the wedge type fixed part 9, has towards the rear end side mode of the Splittable anchor cone 5 of the apsacline wedge portion 25 of the taper of undergauge gradually.
Constitute the internal tooth 14 of aforementioned wedge type fixed part 9, same with aforementioned embodiments, it is mountain portion 4 along the circumferencial direction of inner surface, the internal tooth 14 of the wedge type shape that intersects to form with the 4c of paddy portion along circumferencial direction, form the inclined-plane of both sides of the mountain portion 4 of internal tooth 14, the inclined-plane 4a that is made as front than the inclined-plane 4b of rear end side more on the inclined-plane that axially slowly tilts.
In addition, the a plurality of mountain portion 4 of the internal tooth 14 of leading section inner surface, be set at begin from pars intermedia lower than the mountain portion 4 of rear inner surface, with along from the wedge leading section to undergauge, that represent with the double dot dash line gradually inboard taper gentle dip face 10 of wedge pars intermedia, mountain portion is roughly the 4d of mountain portion of trapezoidal shape from the section of front, the mode that uprises to the inside in turn, and form in the mode of shape that is roughly the mountain portion 4 of acute triangle shape near the section of pars intermedia in turn.
Further specify and be exactly, a plurality of mountain 4d of portion in the internal tooth 14 of leading section inner surface, along beginning from leading section to the pars intermedia inboard taper gentle dip face 10 of undergauge gradually, section is roughly the top of leg-of-mutton mountain portion and is pruned, and is formed roughly trapezoidal shape.
By a plurality of mountain 4d of portion of leading section inner surface like this, along the inboard taper gentle dip face 10 of undergauge gradually, be formed section is roughly the roughly trapezoidal shape of pruning in the top of leg-of-mutton mountain portion, can prevent thus wedge type fixed part 9 leading sections with respect to the biting of PC steel wire 3, can prevent that the axial stress on PC steel wire surface in this section from concentrating simultaneously.Moreover, as the method for making such Splittable anchor cone sheet 6, can make by machine cut processing or casting.
Other formation, since identical with aforementioned embodiments, therefore same composed component is marked with same label, and omits its detailed explanation.
(the 3rd embodiment)
Secondly, with reference to Fig. 9 the Splittable anchor cone 5 that uses in the fixing jig structure of the 3rd embodiment of the present invention is described.Moreover, with the corresponding figure of Fig. 4,,, therefore omit just become same figure if replaced Splittable anchor cone 5.
This embodiment, it is the mode of texturing of aforementioned each embodiment, be to be divided into a plurality of Splittable anchor cone inner peripheral surface 13 along circumferencial direction circumferentially to cut apart end face 19 with it, be connected with the tangent line state in the circular-arc internal tooth mountain portion 4 of previous segmentation type anchor cone inner peripheral surface 13, simultaneously via with along with inclined plane 26 ways of connecting that tilt near cutting apart end face 19 and gradually to the mode of radial direction outside hole enlargement.
With along with angle of slope, can suitably set according to design near previous segmentation end face 19 inclined plane 26 that the mode of hole enlargement tilts outside radial direction gradually.When being provided with such inclined plane 26 that under the tangent line state, is connected in the portion of internal tooth mountain, such as described above, situation when in inner corner portion 20 chamfering connecting portion 1 or circular-arc connecting portion 2 being set is identical, can prevent reliably that inner corner portion 20 from biting twist thread 18 PC steel wire 3 of PC steel, can prevent from PC steel wire 3, to produce scar, and can prevent the brittle fracture of PC steel wire 3 reliably.
Therefore other formation is marked with same label to same composed component, and omits its detailed explanation owing to identical with aforementioned embodiments.
More than and various embodiment the present invention has been described together, but the invention is not restricted to these embodiments, can change within the scope of the invention etc.For example, when enforcement is of the present invention, also can suitably make up illustrated mode.In addition, fixing jig structure of the present invention, going for common PC steel twists thread, and the more high-intensity PC steel fixing jig structure of twisting thread, for example twisted thread more than or equal to 2 by the PC steel, the high-strength PC steel of 000MPa is twisted thread in the fixing jig structure of the high-strength wire material that constitutes, can prevent that also the axial stress of the PC steel wire surface element of Splittable anchor cone leading section or wedge type fixed part from concentrating, in addition, also can prevent the biting of inner corner portion 20 of the Splittable anchor cone sheet 6 of Splittable anchor cone 5.
Industrial utilizability
According to the present invention, twist thread etc. in the stretching fixing jig structure of anchor cone type of high intensity line material being used in the PC steel, since make the Splittable anchor cone the taper outer peripheral face with the central axis angulation, greater than the taper inner peripheral surface of former supporting member with the central axis angulation, therefore have the effect that near the stress of the high-strength wire material part the leading section that relaxes the Splittable anchor cone is concentrated.Particularly, taper outer peripheral face by making the Splittable anchor cone with the central axis angulation, the angle with the central axis angulation with the taper inner peripheral surface of former supporting member is compared, in more than or equal to the scope of 0.3 degree smaller or equal to 0.6 degree, the alleviation effects of concentrating with respect near the stress of the high-strength wire material the leading section of Splittable anchor cone is bigger, and, enter the taper inner peripheral surface of former supporting member easily, and fixing reliably easily, can make practical fixing jig structure.
In addition, according to the present invention, twist thread etc. in the stretching fixing jig structure of anchor cone type of high intensity line material being used in the PC steel, owing to be made as inner peripheral surface at the Splittable anchor cone, begin to have friction-type fixed part certain-length and high-strength wire material from its leading section, and and then the wedge type fixed part with high-strength wire material is arranged, therefore also control high-strength wire material, thereby can prevent at the axial stress on the high-strength wire material surface of Splittable anchor cone leading section or wedge type fixed part leading section concentrated with the friction-type fixed part.And then, as long as between the friction-type fixed part and wedge type fixed part of the inner peripheral surface of Splittable anchor cone, apsacline wedge portion with taper of distolateral backward undergauge gradually, just can improve the binding force of PC steel wire gradually with apsacline wedge portion, therefore can prevent to concentrate at the axial stress on the high-strength wire material surface of wedge type fixed part front.
And then, as other feature of the present invention, owing to circumferentially cut apart the inner corner portion of end face at the inner peripheral surface that is divided into a plurality of Splittable anchor cones along circumferencial direction and its, be provided with the chamfering connecting portion, perhaps, circular-arc connecting portion, perhaps, owing to will be divided into the inner peripheral surface of a plurality of Splittable anchor cones and it circumferentially cuts apart end face along circumferencial direction, in the portion of the internal tooth mountain of the inner peripheral surface that is connected previous segmentation type anchor cone under the tangent line state, simultaneously via with along with connecting near cutting apart section and gradually to the inclined plane that the mode of radial direction outside hole enlargement tilts, therefore can prevent that the inner corner portion of Splittable anchor cone stings on high-strength wire material, scar can be prevented from high-strength wire material, to produce, and brittle fracture can be prevented.
Claims (12)
1. the fixing jig structure of a high-strength wire material, it is the tapered stretching fixing jig structure that uses on the high-strength wire material that compressive force uses in that concrete is paid, it is characterized in that, make the Splittable anchor cone the taper outer peripheral face with the central axis angulation, greater than the taper inner peripheral surface of former supporting member with the central axis angulation.
2. the fixing jig structure of high-strength wire material as claimed in claim 1, it is characterized in that, make previous segmentation type anchor cone the taper outer peripheral face with the central axis angulation, than the taper inner peripheral surface of aforementioned former supporting member with the big angle of central axis angulation in more than or equal to the scope of 0.3 degree smaller or equal to 0.6 degree.
3. the fixing jig structure of high-strength wire material as claimed in claim 1, it is characterized in that, on the inner peripheral surface of previous segmentation type anchor cone, have from its leading section and begin friction-type fixed part certain-length and high-strength wire material, and have then and wedge type fixed part high-strength wire material.
4. the fixing jig structure of high-strength wire material as claimed in claim 1, it is characterized in that, on the inner peripheral surface of previous segmentation type anchor cone, have from its leading section and begin friction-type fixed part certain-length and high-strength wire material, and have then and wedge type fixed part high-strength wire material, and, between aforementioned friction-type fixed part and aforementioned wedge type fixed part, has the apsacline wedge portion of the taper of distolateral backward undergauge gradually.
5. the fixing jig structure of high-strength wire material as claimed in claim 1, it is characterized in that, circumferentially cut apart the inner corner portion of end face at the inner peripheral surface that is divided into a plurality of previous segmentation type anchor cones along circumferencial direction and its, be provided with chamfering connecting portion or circular-arc connecting portion.
6. the fixing jig structure of high-strength wire material as claimed in claim 1, it is characterized in that, the inner peripheral surface that is divided into a plurality of previous segmentation type anchor cones along circumferencial direction is circumferentially cut apart end face with it, in the portion of the internal tooth mountain of the inner peripheral surface that is connected previous segmentation type anchor cone under the tangent line state, and via with along with connecting to the inclined plane that the mode of radial direction outside hole enlargement tilts near cutting apart section and gradually.
7. the fixing jig structure of high-strength wire material as claimed in claim 1 is characterized in that, aforementioned high-strength wire material is more than or equal to 2, and the high-strength PC steel of 000MPa is twisted thread.
8. the fixing jig structure of a high-strength wire material, it is the tapered stretching fixing jig structure that uses on the high-strength wire material that compressive force uses in that concrete is paid, it is characterized in that, on Splittable anchor cone inner peripheral surface, have from its leading section and begin friction-type fixed part certain-length and high-strength wire material, and have then and wedge type fixed part high-strength wire material.
9. the fixing jig structure of high-strength wire material as claimed in claim 8, it is characterized in that, begin friction-type fixed part certain-length and high-strength wire material at leading section from the inner peripheral surface of aforementioned Splittable anchor cone, and between the wedge type fixed part that follow and high-strength wire material, have towards the rear end side apsacline wedge portion of the taper of undergauge gradually.
10. the fixing jig structure of high-strength wire material as claimed in claim 8, it is characterized in that, circumferentially cut apart the inner corner portion of end face at the inner peripheral surface that is divided into a plurality of previous segmentation type anchor cones along circumferencial direction and its, be provided with chamfering connecting portion or circular-arc connecting portion.
11. the fixing jig structure of high-strength wire material as claimed in claim 8, it is characterized in that, the inner peripheral surface that is divided into a plurality of previous segmentation type anchor cones along circumferencial direction is circumferentially cut apart end face with it, in the portion of the internal tooth mountain of the inner peripheral surface that is connected previous segmentation type anchor cone under the tangent line state, and via with along with connecting to the inclined plane that the mode of radial direction outside hole enlargement tilts near cutting apart section and gradually.
12. the fixing jig structure of high-strength wire material as claimed in claim 8 is characterized in that, aforementioned high-strength wire material is more than or equal to 2, and the high-strength PC steel of 000MPa is twisted thread.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003101757A JP2004308203A (en) | 2003-04-04 | 2003-04-04 | Fixed holder structure of high strength wire rod |
| JP101757/2003 | 2003-04-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1771374A true CN1771374A (en) | 2006-05-10 |
| CN100593620C CN100593620C (en) | 2010-03-10 |
Family
ID=33156775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200480009314A Expired - Fee Related CN100593620C (en) | 2003-04-04 | 2004-04-02 | Fixing jig structure of high-strength wire material |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2004308203A (en) |
| KR (2) | KR20050115328A (en) |
| CN (1) | CN100593620C (en) |
| WO (1) | WO2004090254A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323144A (en) * | 2011-05-31 | 2012-01-18 | 河南省煤炭科学研究院有限公司 | Steel wire rope tensile fixture and horizontal steel wire rope tensile testing machine thereof |
| CN105887699A (en) * | 2015-02-16 | 2016-08-24 | 东京制纲株式会社 | Composite threadlike body tail end fixing structure |
| CN108179742A (en) * | 2018-02-06 | 2018-06-19 | 俞晓东 | A kind of steel strand wires concrete-pile |
| CN112726584A (en) * | 2019-10-28 | 2021-04-30 | 周兆弟 | Connecting structure for prefabricated part, prefabricated part and prefabricated pile combination |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4822853B2 (en) * | 2006-01-18 | 2011-11-24 | タマホーム 株式会社 | Rebar locker |
| KR101257419B1 (en) | 2008-12-17 | 2013-04-23 | 재단법인 포항산업과학연구원 | Cable band |
| KR102027640B1 (en) * | 2017-04-11 | 2019-10-01 | 하재식 | One touch type steel reinforcing coupler |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3438355A1 (en) * | 1984-10-19 | 1986-04-24 | Philipp Holzmann Ag, 6000 Frankfurt | Wedge anchorage for tensioning wire strands |
| JPH0425847Y2 (en) * | 1985-03-28 | 1992-06-22 | ||
| JPH0724492Y2 (en) * | 1987-05-21 | 1995-06-05 | 株式会社ピー・エス | FRP rope tension fixing body |
| JPS6433344A (en) * | 1987-07-30 | 1989-02-03 | Sumitomo Const | Anchor tool for polymer tension material |
| FR2648846B1 (en) * | 1989-06-27 | 1991-09-20 | Chaize Alain | LOCKING DEVICE FOR LENGTHENED REINFORCEMENT UNDER VOLTAGE |
| JPH0716729A (en) * | 1993-06-30 | 1995-01-20 | Nippon Steel Corp | High tensile strength composite wire |
| AU709378B2 (en) * | 1994-12-24 | 1999-08-26 | Ccl Stressing International Limited | Anchorage assembly |
| JP2001049795A (en) * | 1999-08-04 | 2001-02-20 | Kurosawa Construction Co Ltd | Male cone for fixation |
-
2003
- 2003-04-04 JP JP2003101757A patent/JP2004308203A/en active Pending
-
2004
- 2004-04-02 KR KR1020057018545A patent/KR20050115328A/en not_active Application Discontinuation
- 2004-04-02 WO PCT/JP2004/004863 patent/WO2004090254A1/en active Application Filing
- 2004-04-02 CN CN200480009314A patent/CN100593620C/en not_active Expired - Fee Related
- 2004-04-02 KR KR1020077021096A patent/KR20070103503A/en not_active Application Discontinuation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323144A (en) * | 2011-05-31 | 2012-01-18 | 河南省煤炭科学研究院有限公司 | Steel wire rope tensile fixture and horizontal steel wire rope tensile testing machine thereof |
| CN105887699A (en) * | 2015-02-16 | 2016-08-24 | 东京制纲株式会社 | Composite threadlike body tail end fixing structure |
| CN108179742A (en) * | 2018-02-06 | 2018-06-19 | 俞晓东 | A kind of steel strand wires concrete-pile |
| CN112726584A (en) * | 2019-10-28 | 2021-04-30 | 周兆弟 | Connecting structure for prefabricated part, prefabricated part and prefabricated pile combination |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100593620C (en) | 2010-03-10 |
| JP2004308203A (en) | 2004-11-04 |
| WO2004090254A1 (en) | 2004-10-21 |
| KR20050115328A (en) | 2005-12-07 |
| KR20070103503A (en) | 2007-10-23 |
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