CN217203626U - Cold-cast extrusion anchoring composite steel strand inhaul cable - Google Patents
Cold-cast extrusion anchoring composite steel strand inhaul cable Download PDFInfo
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- CN217203626U CN217203626U CN202220959164.7U CN202220959164U CN217203626U CN 217203626 U CN217203626 U CN 217203626U CN 202220959164 U CN202220959164 U CN 202220959164U CN 217203626 U CN217203626 U CN 217203626U
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- steel strand
- anchor
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- cold
- thick bamboo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 94
- 239000010959 steel Substances 0.000 title claims abstract description 94
- 238000001125 extrusion Methods 0.000 title claims abstract description 17
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 238000004873 anchoring Methods 0.000 title claims description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000005266 casting Methods 0.000 claims abstract description 34
- 239000004593 Epoxy Substances 0.000 claims abstract description 32
- 239000004576 sand Substances 0.000 claims abstract description 31
- 229910052742 iron Inorganic materials 0.000 claims abstract description 30
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 16
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 16
- 241001330002 Bambuseae Species 0.000 claims abstract description 16
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 16
- 239000011425 bamboo Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 17
- 239000004568 cement Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 229920006332 epoxy adhesive Polymers 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 2
- 238000000926 separation method Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical group [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model relates to a composite shaped steel strand wires cable of chill casting extrusion anchor, including chill casting anchor cup, anchor slab, a sealed section of thick bamboo and finished product cable, still including at least one extension section of thick bamboo, it has interior taper hole two to open in this extension section of thick bamboo, and an extension section of thick bamboo both ends pass through threaded connection with chill casting anchor cup, a sealed section of thick bamboo respectively, and the tip steel strand wires of finished product cable pass sealed section of thick bamboo, an extension section of thick bamboo and chill casting anchor cup after-fixing on the anchor slab in proper order, and the interval is installed a plurality of ring plugs that are used for with steel strand wires outer silk and center silk separation on the center silk of the finished product cable steel strand wires that lie in an extension section of thick bamboo and chill casting anchor cup, it has the iron oxide sand to fill between an extension section of thick bamboo, chill casting anchor cup and the finished product cable steel strand wires. The utility model discloses increased one section and the extension section of thick bamboo of the same anchor effect of playing of cold-cast anchor cup effect, increase the regional length of anchor, in the anchor region through putting into the ring stopper with steel strand wires break up expose in epoxy iron sand, increase the area of contact of steel strand wires and epoxy iron sand, effectively improved the anchor efficiency of cable.
Description
Technical Field
The utility model relates to a prestressing force cable, in particular to composite shaped steel stranded conductor cable of chill casting extrusion anchor.
Background
At present, the classification of the steel strand inhaul cables comprises an integral extrusion type anchorage inhaul cable, a hot cast anchorage inhaul cable, a cold cast anchorage inhaul cable and other clamping piece anchoring type steel strand inhaul cables which need to be matched with clamping pieces for use. The clamping piece anchoring type steel strand inhaul cable needs to be matched with a clamping piece for use, the clamping piece anchoring type inhaul cable generally cannot be assembled in a factory, the clamping piece anchoring type inhaul cable needs to be installed and tensioned on the use site, the requirement on the construction period is long, the clamping piece anchoring type steel strand inhaul cable is large in size, a plurality of bridges cannot be used, especially a suspender arch bridge, and the clamping piece anchoring type steel strand inhaul cable is hardly used. Compared with a clamping piece anchoring type inhaul cable, the hot-cast anchor steel strand inhaul cable can be manufactured in a factory, but the manufacturing process is complex, the adopted hot-cast body is copper-zinc alloy, and the manufacturing cost of the inhaul cable is high due to the fact that the alloy is very expensive. At present, the whole extrusion type anchorage device inhaul cable capable of meeting the use requirements is not adopted due to different design reasons and specific use requirements, the whole extrusion type anchorage device inhaul cable is complex to manufacture, the anchor head needs to process the threads of the anchor head together with the inhaul cable after being extruded, the inhaul cable with the length of 200 meters is calculated, the inhaul cable cannot be detached during thread processing, and the manufacturing cost is relatively high. Compared with the pull cables, the steel strand cold-cast anchor pull cable is simpler to manufacture, has reliable anchoring performance, is mainly applied to the suspension cable, the suspension rod of an arch bridge and the main cable of a suspension bridge, particularly the suspension rod of the arch bridge with fork lugs at two ends, and has the most advantage in application.
At present, the mainstream cold-cast anchor steel strand stay cable is composed of a cold-cast anchor cup 13, a baffle plate 1, a conical plug 2, an anchor plate 14, epoxy iron sand 11, an adjusting nut 4, epoxy mortar 10, a finished cable 9 (a finished steel strand stay cable), a sealing cylinder 7, a sealing device 8, a sealing cover 15 and the like (as shown in fig. 6). In the anchoring area, the finished steel strand inhaul cable transmits force to the cold-cast anchor cup through the epoxy iron sand and the anchor plate which are in contact with the steel strand of the cable body, and the cold-cast anchor cup transmits the force to the steel beam structure through the adjusting nut in threaded connection with the cold-cast anchor cup to complete anchoring. In the anchoring structure, epoxy iron sand and an anchor plate play a role in intermediate transmission force on the steel strand. Because the length of the anchor cup and the taper of the inner hole are limited, the anchor cup cannot be made very long, so the contact length of the epoxy iron sand and the steel strand is limited, and the gripping force is also limited. The anchor plate can enhance the anchoring effect on the steel strands, but the steel strands are mainly anchored by means of epoxy iron sand. The structure has extremely high requirements on the epoxy iron sand pouring process and the thermosetting process, is very easy to cause insufficient gripping force, and can cause the situation that the steel strand is separated from the epoxy iron sand or the steel strand and the epoxy iron sand together from the anchor cup after being stressed.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: the utility model provides a composite steel strand wires cable of chill casting extrusion anchor has increased one section and has played the extension section of thick bamboo of anchor effect the same with chill casting anchor cup effect, increases the regional length of anchor, breaks up the steel strand wires through putting into the ring stopper in the anchor region and exposes in epoxy iron sand, increases the area of contact of steel strand wires and epoxy iron sand, has effectively improved the anchor efficiency of cable.
The technical scheme for solving the technical problems is as follows: a cold-cast extrusion anchoring composite steel strand inhaul cable comprises a cold-cast anchor cup, an anchor plate, a sealing cylinder and a finished cable, wherein a first inner conical hole is formed in the cold-cast anchor cup, the cold-cast extrusion anchoring composite steel strand inhaul cable also comprises at least one extending cylinder, the extension cylinder is internally provided with a second inner conical hole, two ends of the extension cylinder are respectively connected with the cold-cast anchor cup and the sealing cylinder through threads, the big end of the second inner conical hole of the extension cylinder is communicated with the small end of the first inner conical hole of the cold-cast anchor cup, the end steel strand of the finished cable sequentially passes through the sealing cylinder, the extension cylinder and the cold-cast anchor cup and then is fixed on the anchor plate, a plurality of ring plugs for separating the outer wire and the central wire of the steel strand are arranged on the central wire of the finished cable steel strand in the extension cylinder and the cold-cast anchor cup at intervals, epoxy iron sand is filled among the extension cylinder, the cold-cast anchor cup and the finished cable steel strand, and epoxy adhesive cement is filled among the sealing cylinder and the finished cable steel strand.
The ring plug is circular.
The end of the finished cable steel strand is fixed on the anchor plate, namely the center screw end pier head of the steel strand, and the center screw of the pier head is sleeved with a cone plug formed by two separated hemipyramids.
The distance between two adjacent ring plugs on the same steel strand is 0.3-1 m.
The utility model discloses in the anchor region, one or more have with the extension section of thick bamboo of the equal anchor effect of anchor cup, simultaneously on single steel strand wires, it breaks up the district to have increased several sections, all contact with epoxy iron sand through the outer silk that the installation ring stopper made steel strand wires on the central silk, in the time of increase area of contact, the steel strand wires that break up form several sections like the bulge of bamboo joint, can block in epoxy iron sand, increase the bond stress of epoxy iron sand to steel strand wires, thereby the bond stress of epoxy iron sand to steel strand wires has been improved greatly, make steel strand wires or epoxy iron sand deviate from anchor cup and extension section of thick bamboo also easily when receiving very energetically.
The technical features of a cold-cast extrusion-anchored composite steel strand cable according to the present invention will be further described with reference to the accompanying drawings and embodiments.
Drawings
FIG. 1: the utility model relates to a composite shaped steel stranded conductor cable structure schematic diagram of chill casting extrusion anchor.
FIG. 2: the utility model discloses an extension section of thick bamboo and chill casting anchor cup, sealing cylinder coupling part structural schematic diagram.
FIG. 3: the utility model discloses a ring stopper installation sketch map.
FIG. 4: fig. 3 is a sectional view taken along line a-a.
FIG. 5 is a schematic view of: the utility model discloses a awl stopper installation sketch map.
FIG. 6: the utility model discloses a current mainstream chill casting anchor steel strand wires cable structure sketch map.
Detailed Description
Example (b): a cold-cast extrusion anchoring composite steel strand inhaul cable comprises a baffle 1, a conical plug 2, an adjusting nut 4, a sealing cylinder 7, a sealing device 8, an anchor plate 14, a cold-cast anchor cup 13, a spherical backing ring 12, epoxy iron sand 11, epoxy mortar 10 and a finished product cable 9, wherein a first inner conical hole is formed in the cold-cast anchor cup, the finished product cable is a finished product steel strand inhaul cable, the cold-cast extrusion anchoring composite steel strand inhaul cable is characterized by further comprising an extension cylinder 5 and a plurality of ring plugs 3, a second inner conical hole is formed in the extension cylinder, two ends of the extension cylinder 5 are respectively in threaded connection with the cold-cast anchor cup 13 and the sealing cylinder 7, the two large ends of the inner conical hole of the extension cylinder are communicated with the small end of the inner conical hole of the cold-cast anchor cup, an end steel strand 6 of the finished product cable sequentially penetrates through the sealing cylinder 7, the extension cylinder 5 and the cold-cast anchor cup 13 and then is fixed on the anchor plate 14, a plurality of ring plugs 3 for separating an outer wire 62 from a central wire 61 are arranged on central wire of the finished product steel strand inhaul cable steel strand in the extension cylinder and the cold-cast anchor cup at intervals, epoxy iron sand 11 is filled among the extension cylinder, the cold-cast anchor cup and the finished cable steel strand, and epoxy adhesive cement 10 is filled among the sealing cylinder and the finished cable steel strand.
In the embodiment, only one extension cylinder is arranged, and if a plurality of extension cylinders are arranged, the plurality of extension cylinders are connected into a long extension cylinder through threads and then are respectively connected with the cold-cast anchor cup and the extension cylinder through threads.
In this embodiment, the ring plug is annular. The end of the finished cable steel strand is fixed on the anchor plate, namely the center screw end pier head of the steel strand, and the center screw of the pier head is sleeved with a cone plug 2 consisting of two separated semi-cones. The method can enlarge the outer diameter of the end of the steel strand, and the end of the steel strand can be locked by the taper hole on the anchor plate, so that the anchoring force on the steel strand is increased.
In the embodiment, the distance between two adjacent ring plugs on the same steel strand is 0.3-1 m. As a transformation, the distance between two adjacent ring plugs on the same steel strand can be adjusted according to actual needs.
In the embodiment, a section of extension cylinder which is provided with an inner taper hole and used for locking the epoxy iron sand is added on the basis of a main stream cold-cast anchor steel strand inhaul cable, and equivalently, a cold-cast anchor cup is used for anchoring the epoxy iron sand and the steel strands in the epoxy iron sand. On the basis of a main stream cold-cast anchor steel strand inhaul cable, a steel strand is positioned in the areas of a cold-cast anchor cup and an extension cylinder, the steel strand is scattered and then sleeved with a ring plug on a central wire, six outer wires are wrapped outside the ring plug and are furled, and a multi-section steel strand outer wire bulging area is formed in a circulating mode for several times. The raised outer wires can also provide more resistance when being pulled, and the anchoring efficiency is increased.
The structures and connection modes of the baffle, the adjusting nut, the sealing device, the spherical backing ring and other components which are not described in detail in this embodiment are the same as those in the prior art, and are not described again here.
The utility model discloses anchor power test method and step.
The test method comprises the following steps:
the preparation the utility model discloses the finished product cable is one, according to making the utility model discloses the conventional chill casting anchor cable of size preparation of cable is one, will the utility model discloses cable and conventional chill casting anchor cable are installed in proper order on the reaction frame, push out the stretch-draw end through the jack, and the cable is elongated, detects the anchor power of the supporting ground tackle of two sets of chill casting anchor cables to the cable body and carries out the analysis contrast, draws the conclusion.
The test process and the test steps are as follows:
make the utility model discloses one of 5 hole chill casting anchor cables and conventional 5 hole chill casting anchor cables will the utility model discloses one end of 5 hole chill casting anchor cables is installed on the fixed end of reaction frame, the utility model discloses another one end of 5 hole chill casting anchor cables passes jack and sensor, makes the cable fix on the sensor through turning round tight adjusting nut. And opening an oil pump for oiling, ejecting out a piston of the jack, pushing the sensor and the cold casting anchor cup by the piston, gradually pulling the distance between the anchor cups at the two ends of the cable body away, and driving the steel strand wrapped in the epoxy iron sand to be elongated by the epoxy iron sand. When the piston continues to eject until the steel strand wrapped inside the epoxy iron sand slips or the epoxy iron sand slips from the anchor cup together with the steel strand, the anchoring fails, the anchoring force reaches the maximum value, and the maximum tensile force F1=1305KN displayed on the sensor at the moment is recorded. The above test was repeated by replacing the conventional cold-cast anchor cable, and the maximum anchoring force F2=1255KN of the conventional 5-hole cold-cast anchor cup was measured. Through the data contrast, the utility model discloses a chill casting anchor cable's anchor efficiency is than conventional big 3.98%. The anchor power of conventional chill casting anchor cable will reach the requirement, must reach 95% of steel strand wires limit rupture force, the utility model discloses a chill casting anchor is about 3.98% higher than the anchor efficiency of conventional chill casting anchor cable, 95% +3.98% =98.98%, promptly the utility model discloses an anchor efficiency has reached about 98.89%, has very close the limit rupture force of parent metal, has reached the requirement of GB/T30826 thin and supple with money standard to steel strand wires cable anchor efficiency far away.
And (4) conclusion: the length of the anchoring area is increased by adding a section of extension cylinder which has the same function as the anchor cup and has the anchoring function. And (3) scattering the steel strands in the anchoring area by putting an annular plug into the anchoring area, so that the steel strands are exposed in the epoxy iron sand, and the contact area between the steel strands and the epoxy iron sand is increased. The broken steel strands form a raised part, and the anchoring force along the axial direction of the steel strands is increased.
Claims (4)
1. The utility model provides a compound shaped steel stranded conductor cable of chill casting extrusion anchor, includes chill casting anchor cup, anchor slab, a sealed section of thick bamboo and finished product cable, it has interior taper hole one, its characterized in that to open in the chill casting anchor cup: the steel strand cold-casting anchor cable is characterized by further comprising at least one extension cylinder, wherein an inner conical hole II is formed in the extension cylinder, two ends of the extension cylinder are respectively in threaded connection with the cold-casting anchor cup and the sealing cylinder, the large end of the inner conical hole II of the extension cylinder is communicated with the small end of the inner conical hole I of the cold-casting anchor cup, the end steel strand of a finished cable sequentially penetrates through the sealing cylinder, the extension cylinder and the cold-casting anchor cup and then is fixed on an anchor plate, a plurality of ring plugs used for separating an outer wire of the steel strand from a central wire are mounted on the central wire of the finished cable steel strand in the extension cylinder and the cold-casting anchor cup at intervals, epoxy iron sand is filled among the extension cylinder, the cold-casting anchor cup and the finished cable steel strand, and epoxy adhesive cement is filled among the sealing cylinder and the finished cable steel strand.
2. The composite steel strand inhaul cable for the cold-cast extrusion anchoring of claim 1, wherein: the ring plug is circular.
3. The chilled-cast extrusion anchoring composite steel strand inhaul cable according to claim 1 or 2, characterized in that: the end of the finished cable steel strand is fixed on the anchor plate, namely the center screw end pier head of the steel strand, and the center screw of the pier head is sleeved with a cone plug formed by two separated hemipyramids.
4. The cold-cast extrusion anchoring composite steel strand inhaul cable according to claim 1 or 2, wherein: the distance between two adjacent ring plugs on the same steel strand is 0.3-1 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220959164.7U CN217203626U (en) | 2022-04-24 | 2022-04-24 | Cold-cast extrusion anchoring composite steel strand inhaul cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220959164.7U CN217203626U (en) | 2022-04-24 | 2022-04-24 | Cold-cast extrusion anchoring composite steel strand inhaul cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217203626U true CN217203626U (en) | 2022-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220959164.7U Active CN217203626U (en) | 2022-04-24 | 2022-04-24 | Cold-cast extrusion anchoring composite steel strand inhaul cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217203626U (en) |
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2022
- 2022-04-24 CN CN202220959164.7U patent/CN217203626U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Cold Casting Squeezing Anchorage Composite Steel Strand Cable Granted publication date: 20220816 Pledgee: China Everbright Bank Co.,Ltd. Liuzhou Branch Pledgor: LIUZHOU GUIQIAO CABLE Co.,Ltd. Registration number: Y2024450000027 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |