CN202416178U - Large-specification unit wire strand for main cable of suspension bridge - Google Patents
Large-specification unit wire strand for main cable of suspension bridge Download PDFInfo
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- CN202416178U CN202416178U CN2011205535175U CN201120553517U CN202416178U CN 202416178 U CN202416178 U CN 202416178U CN 2011205535175 U CN2011205535175 U CN 2011205535175U CN 201120553517 U CN201120553517 U CN 201120553517U CN 202416178 U CN202416178 U CN 202416178U
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- thread
- anchor cup
- wire strand
- pressure
- suspension bridge
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Abstract
The utility model relates to a large-specification wire strand for a main cable of a suspension bridge. The large-specification unit wire strand comprises anchorage devices and a wire strand, wherein the anchorage devices are arranged at two ends of the wire strand; the wire strand is a steel wire bundle with a regular hexagonal cross section, which is weaved and bound by 169 steel wires in parallel; each anchorage device comprises an anchor cup; the wire strand is penetrated in an inner hole of each anchor cup and is fixed by filling zinc-copper alloy; the outer surface of each anchor cup is provided with a thread; an adjusting nut is connected with each anchor cup through the thread; a pressure-bearing baseplate is arranged at one end of each anchor cup, which is close to the center of the wire strand; and a spherical hinge structure is arranged between each adjusting nut and each pressure-bearing baseplate. According to the utility model, the purposes of enhancing the bearing capacity of single wire strand and reducing the using amount of the wire strand are achieved by increasing the quantity of the steel wires of the wire strand to 169; meanwhile, because the thermally-cast anchorage devices are pressure-bore by the adjustable nuts, the self-adjustment of the length of the wire strand is realized; in addition, due to adoption the spherical hinge design, the deflection of an angle between the main cable and the pressure-bearing baseplate is adjusted, the stress state of the main cable structure is improved, and the safety property of the main cable is further improved.
Description
Technical field:
The utility model belongs to the bridge cable technical field of structures, is specifically related to a kind of main rope of suspension bridge with big specification unit thread.
Background technology:
Domestic main rope of suspension bridge unit thread specification adopts PPWS5-91 and PPWS5-127 usually, and promptly the unit thread is arranged parallel volume beam forming by 91 or 127 Φ 5mm steel wires by regular hexagon, and end face bearing structure hot-cast ground tackle is used at two ends.Some Shu Danyuan threads set up after tight cable, twine operation composition main rope of suspension bridge such as silk.Suspension bridge need be provided with gravity anchor, tunnel-type anchorage or the rock anchor of big volume at the bridge two ends usually for structure stress balance and transmission tension of main cable, and the main push-towing rope thread is anchored in the bearing structure of anchorage through the two ends ground tackle.Also can main push-towing rope directly be anchored on the stiff girder, become self-anchored suspension bridge.No matter which kind of force way main push-towing rope adopts; In order to control the position at main cable linear and each control point; All need adjust main push-towing rope unit thread anchorage length, the length adjustment of main push-towing rope unit thread mainly realizes through between ground tackle and pressure-bearing backing plate, increasing and decreasing backing plate or increasing the anchor pole transition structure in addition.
Said structure main push-towing rope unit thread because burst interior steel wire quantity is few, is satisfying under same bearer regulated quantity and the equal intensity of steel wire rank situation; It is less relatively that sub-thread bears pulling force; The radical of the unit thread that needs increases, and corresponding ground tackle and supporting member all need increase, and the required anchoring of main push-towing rope space is strengthened; The anchorage structure also must correspondingly increase relevant stress structure and supporting facility, and the input increment relation that brings thus often is not simple linear relativity.Because the increase of unit thread radical and anchor structure all can impact manufacturing of rope thread and construction, and corresponding construction node increases, construction period increases, thereby delays construction speed simultaneously.
The said structure ground tackle is the end face bearing structure; Finished product thread rope itself does not possess the length adjustment ability; Like this in main cable construction; Can only between ground tackle and anchor plate, regulate main cable linear by the adjusting backing plate of increase and decrease band U type groove, and the influence of conditioned plate thickness, degree of regulation often also is difficult to realize step-less adjustment.Because adjustment structure not convenient, also must cause the difficulty of main cable construction and numerous and diverse, even maybe be to the safety deleterious impact.Suspension bridge structure for the band anchorage; In order to overcome above-mentioned unfavorable condition; Can between main push-towing rope anchor structure and anchorage, increase anchor tie and regulate linked system, it realizes the length adjustment of main push-towing rope unit thread passing to anchorage to tension of main cable simultaneously through being threaded above the anchor tie.The connecting elements increase also must increase the overall input of bridge but this anchor tie is regulated linked system, and it is complicated to make main push-towing rope carry the system force structure simultaneously, has increased unnecessary security control node, all makes troubles for construction and bridge inspection and maintenance.
The utility model content:
In sum, for overcoming the deficiency of prior art, the utility model provides a kind of main rope of suspension bridge with big specification unit thread; It is to be increased to 169 through the steel wire quantity with the unit thread, reaches the supporting capacity of enhancement unit thread, reduces the purpose of the usage quantity of unit thread; Adopt adjustable nut pressure-bearing hot-cast ground tackle simultaneously; Realize the self-regulation of unit thread length, and adopt ball pivot design, the angular deviation of adjustment main push-towing rope and pressure-bearing backing plate; Improve the stress of main push-towing rope structure, and then improve the security performance of main push-towing rope.
For solving the problems of the technologies described above, the technical scheme of the utility model is achieved in that
A kind of main rope of suspension bridge is with big specification unit thread, wherein: comprise ground tackle and thread, ground tackle is arranged on the two ends of thread; The cross sectional shape that described thread is restrainted by 169 parallel volumes of steel wire is orthohexagonal steel tendon; Described ground tackle comprises anchor cup, adjusting nut, wire sub-panel, pressure-bearing backing plate and spherical hinge structure, and it is interior also fixing that thread is installed on the endoporus of anchor cup, and thread is evenly dispersed and is fixed on the wire sub-panel; The external surface of anchor cup is provided with screw thread; Adjusting nut and anchor cup are through being threaded, and the end near the thread center on the anchor cup is provided with the pressure-bearing backing plate, is provided with spherical hinge structure between adjusting nut and the pressure-bearing backing plate.
Further, described thread and anchor cup are fixed through the perfusion pltine.
Further, the endoporus of described anchor cup is a taper hole, and its small end is towards thread.
Further, described thread is through binding strap colligation typing, and binding strap is a polyester belt, and the colligation spacing is 1.5～2.0m.
Further, the screw thread of described anchor cup external surface is a trapezoidal thread.
The beneficial effect of the utility model is:
1, the utility model is to be increased to 169 through the steel wire quantity with thread, reaches the supporting capacity of enhancement unit thread, reduces the purpose of the usage quantity of thread; Adopt adjustable nut pressure-bearing hot-cast ground tackle simultaneously; Realize the self-regulation of thread length, and adopt ball pivot design, the angular deviation of adjustment main push-towing rope and pressure-bearing backing plate; Improve the stress of main push-towing rope structure, and then improve the security performance of main push-towing rope.
2, the utility model adjusting nut and pressure-bearing backing plate between be provided with spherical hinge structure; Adopt the coupling sphere as universal adjustment mechanism; Be implemented in the self-coordinating ability of ground tackle under the main push-towing rope action of pulling stress; Make ground tackle and the pressure-bearing surface can automatic centering, make structure stress balanced, improve security performance.
3, the mode of perfusion pltine is fixed in the anchor cup that fixedly is employed in ground tackle of the utility model ground tackle and thread; Fixed structure is firm; The phenomenon that gets loose can not occur, through regulating the position of adjusting nut on the anchor cup, reach the needs that main cable linear is regulated in the thread erection process simultaneously.
Description of drawings:
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the cross section enlarged diagram of the utility model thread;
Fig. 3 is the A portion enlarged diagram of the utility model Fig. 1;
Fig. 4 is the B portion enlarged diagram of the utility model Fig. 1.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is done further to specify.
Like Fig. 1, Fig. 2, Fig. 3, shown in Figure 4; A kind of main rope of suspension bridge comprises ground tackle and thread 6 with big specification unit thread, and ground tackle is arranged on the two ends of thread 6; The cross sectional shape that thread 6 is restrainted by 169 parallel volumes of steel wire is orthohexagonal steel tendon; Thread 6 is through binding strap 5 colligations typing, and binding strap 5 is a polyester belt, and the colligation spacing is 1.8m.Ground tackle comprises anchor cup 4, adjusting nut 1, wire sub-panel 2, pressure-bearing backing plate 10 and spherical hinge structure 7; Anchor cup 4 inner chambers are set to taper; Thread 6 is installed in the taper hole of anchor cup 4 and is fixing through perfusion pltine 3, and the hollow small end of the taper of anchor cup 4 adopts wire sub-panel 2 that the steel wire of thread 6 is evenly dispersed towards thread 6; The external surface of anchor cup 4 is provided with trapezoidal thread; Adjusting nut 1 and anchor cup 4 are through being threaded, and the end near thread 6 centers on the anchor cup 4 is provided with pressure-bearing backing plate 10, is provided with spherical hinge structure 7 between adjusting nut 1 and the pressure-bearing backing plate 10.
During manufacturing; The steel wire of selecting physical dimension and stable mechanical property is as standard silk 9; According to main rope of suspension bridge design length and mark requirement, and take into full account temperature, sag, elastic elongation equal length modifying factor, adopt the segmentation base-line method standard silk 9 to be carried out the mark at linear measure longimetry and benchmark control point; Use double-colored coating line of demarcation to serve as a mark a little, standard silk 9 is standards of thread 6 length control.
169 steel wires are regular hexagonal section by regularly arranged and volume bundle; The standard silk of wherein making as stated above 9 is arranged in the upper right corner of thread 6; Be painted with red steel wire to a total length and be arranged in the upper left corner; Silk 8 as a token of, sign silk 8 are used for monitoring the thread 6 that thread 6 making and erection process possibly occur and reverse.
In order to keep the shape of thread 6 regular hexagonal section, whenever be divided into 1.8 meters with fiber reinforced polyester band colligation typing, 8～10 circles are twined at every place, and guarantee that enough tension force is arranged, and prevent the broken belt situation to occur in subsequently volume rope and the scene process of hanging.
The thread of making 6 is penetrated anchor cup 4; Wire sub-panel 2 and positioning and fixing are installed; In anchor cup 4 tapered endoporus, irritate casting pltine 3 solution (alloy is irritated 460 ℃ ± 10 ℃ of casting temperature) by the technology of setting; Make that steel wire and pltine 3 are fixed to be the circular cone sphenoid, rely on itself and the wedge effect of anchor cup 4 internal taper holes, the anchor structure of formation thread 6.
In the time of need carrying out long adjustment of rope of thread 6; Through anchor cup 4 stretch-draw threads 6, screw adjusting nut 1 with tensioning equipments such as jack as required, control its anchorage point on anchor cup 4; Can in the scope of regulation, realize the adjustment of thread 6 random lengths, realize stepless accent rope.
Be noted that; The foregoing description is to the explanation of the utility model technical scheme and unrestricted; Other modification that is equal to replacement or makes of affiliated technical field those of ordinary skill according to prior art; As long as do not exceed the thinking and the scope of the utility model technical scheme, all should be included within the desired interest field of the utility model.
Claims (5)
1. a main rope of suspension bridge is with big specification unit thread; It is characterized in that: comprise ground tackle and thread (6); Ground tackle is arranged on the two ends of thread (6), and the cross sectional shape that described thread (6) is restrainted by 169 parallel volumes of steel wire is orthohexagonal steel tendon, and described ground tackle comprises anchor cup (4), adjusting nut (1), wire sub-panel (2), pressure-bearing backing plate (10) and spherical hinge structure (7); It is interior also fixing that thread (6) is installed on the endoporus of anchor cup (4); Thread (6) is evenly dispersed and is fixed on the wire sub-panel (2), and the external surface of anchor cup (4) is provided with screw thread, and adjusting nut (1) and anchor cup (4) are through being threaded; The end that anchor cup (4) is gone up near thread (6) center is provided with pressure-bearing backing plate (10), is provided with spherical hinge structure (7) between adjusting nut (1) and the pressure-bearing backing plate (10).
2. main rope of suspension bridge according to claim 1 is characterized in that with big specification unit thread: described thread (6) is fixing through perfusion pltine (3) with anchor cup (4).
3. main rope of suspension bridge according to claim 1 is characterized in that with big specification unit thread: the endoporus of described anchor cup (4) is a taper hole, and its small end is towards thread (6).
4. main rope of suspension bridge according to claim 1 is characterized in that with big specification unit thread: described thread (6) is through binding strap (5) colligation typing, and binding strap (5) is a polyester belt, and the colligation gap is 1.5～2.0m.
5. main rope of suspension bridge according to claim 1 is characterized in that with big specification unit thread: the screw thread of described anchor cup (4) external surface is a trapezoidal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205535175U CN202416178U (en) | 2011-12-27 | 2011-12-27 | Large-specification unit wire strand for main cable of suspension bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205535175U CN202416178U (en) | 2011-12-27 | 2011-12-27 | Large-specification unit wire strand for main cable of suspension bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202416178U true CN202416178U (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205535175U Expired - Fee Related CN202416178U (en) | 2011-12-27 | 2011-12-27 | Large-specification unit wire strand for main cable of suspension bridge |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102975277A (en) * | 2012-11-28 | 2013-03-20 | 中铁八局集团桥梁工程有限责任公司 | Concrete turnout sleeper bottom side bailing type short die |
| CN107090771A (en) * | 2017-04-19 | 2017-08-25 | 柳州市邱姆预应力机械有限公司 | Separate type hot-cast anchor rope and preparation method |
| CN110565523A (en) * | 2019-09-17 | 2019-12-13 | 广东迈诺工业技术有限公司 | Suspension bridge main push-towing rope preforming strand manufacturing and saddle entering system |
| CN113585070A (en) * | 2020-04-30 | 2021-11-02 | 上海浦江缆索股份有限公司 | Ultrahigh-strength fatigue-resistant zinc-aluminum-magnesium coating suspension bridge main cable strand |
| CN114491760A (en) * | 2022-01-24 | 2022-05-13 | 中铁大桥勘测设计院集团有限公司 | Method and device for calculating installation angle of anchor pull rod |
-
2011
- 2011-12-27 CN CN2011205535175U patent/CN202416178U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102975277A (en) * | 2012-11-28 | 2013-03-20 | 中铁八局集团桥梁工程有限责任公司 | Concrete turnout sleeper bottom side bailing type short die |
| CN107090771A (en) * | 2017-04-19 | 2017-08-25 | 柳州市邱姆预应力机械有限公司 | Separate type hot-cast anchor rope and preparation method |
| CN110565523A (en) * | 2019-09-17 | 2019-12-13 | 广东迈诺工业技术有限公司 | Suspension bridge main push-towing rope preforming strand manufacturing and saddle entering system |
| CN113585070A (en) * | 2020-04-30 | 2021-11-02 | 上海浦江缆索股份有限公司 | Ultrahigh-strength fatigue-resistant zinc-aluminum-magnesium coating suspension bridge main cable strand |
| CN114491760A (en) * | 2022-01-24 | 2022-05-13 | 中铁大桥勘测设计院集团有限公司 | Method and device for calculating installation angle of anchor pull rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20121227 |