CN102535342A - Cable-end sealing method for suspension cable of suspension bridge - Google Patents
Cable-end sealing method for suspension cable of suspension bridge Download PDFInfo
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- CN102535342A CN102535342A CN2012100079832A CN201210007983A CN102535342A CN 102535342 A CN102535342 A CN 102535342A CN 2012100079832 A CN2012100079832 A CN 2012100079832A CN 201210007983 A CN201210007983 A CN 201210007983A CN 102535342 A CN102535342 A CN 102535342A
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Abstract
The invention relates to a cable-end sealing method for a suspension cable of a suspension bridge, which includes the steps: firstly, completely peeling a segment of a polyethylene sheath to expose a steel wire bundle at the end of the suspension cable according to the length requirement of grouted anchor in an anchorage device; secondly, sectioning the polyethylene sheath lengthwise to obtain two slits to form two semicircular sheath sections with the tails connected; thirdly, passing the steel wire bundle through the anchorage device for wire splitting; fourthly, mounting the steel wire bundle into the anchorage device when the steel wires are split, using a fixture to clamp the sectioned semicircular sheath sections with the tails connected, and performing anchor grouting; fifthly, removing the fixture after anchor grouting, welding the two semicircular sheath sections with the tails connected, and mounting a steel connecting cylinder on the exposed steel wire bundle; and sixthly, pouring epoxy resin first between the polyethylene sheath and the connecting cylinder, using water swellable rubber strips and water swellable rubber putty to fill the ends of the connecting cylinder, fastening a rear cap, and filling a gap between the rear cap and the polyethylene sheath with water swellable rubber putty. The cable-end sealing method meets the use requirements of the suspension cable in terms of durability and scenery.
Description
Technical field
The present invention relates to a kind of sling of suspension bridge bitter end hermetically-sealed construction.Belong to technical field of bridge engineering.
Background technology
Sling of suspension bridge is the main bearing member that the bridge floor load is passed to main push-towing rope through cord clip.The hoist cable ground tackle is the force transmission element that hoist cable cable body and cord clip and beam are coupled together.Ground tackle and cable body adopt pltine or epoxy resin pouring to form anchoring body usually.In this process, need peel the anticorrosion pe sheath of hoist cable off.Therefore, this position becomes a central core of circulation of moisture content and other hazardous substancess entering cable body.In view of above reason, adopt the bitter end Sealing Technology to get into the hoist cable cable body, thereby influence the durability of hoist cable to prevent water part and other hazardous substancess.Therefore, the bitter end hermetically-sealed construction of hoist cable has directly influenced the durability of sling of suspension bridge.On the other hand, the bitter end hermetically-sealed construction of hoist cable all can be seen within sweep of the eye the pedestrian, and suspension bridge requires its member not only reliable but also attractive in appearance as the building of a grace.
Traditional sling of suspension bridge bitter end Sealing Technology implementation procedure is following: the hoist cable sheath is peeled off according to the length that requires that can satisfy the steel wire dispersion fully; Then steel wire is disperseed; The connecting cylinder of steel is installed on exposed steel tendon behind the filling anchor again; Back infusion epoxy resin encapsulant is installed, between the hoist cable of connecting cylinder and band pe sheath, silicone rubber seal cushion rubber and pressure ring is installed again, adopt the heat shrinking sleeve that can shrink after the heating to pack tightly at hoist cable and connecting cylinder overlapping part at last.
The present the following aspects of its sealing corrosion acting body:
1) connecting cylinder of steel is as protection;
2) pour into encapsulant between connecting cylinder and the exposed steel wire;
3) utilize pressure ring to compress O-ring seal, make the O-ring seal distortion fill up the space, realize sealing;
4) utilize heat shrinking sleeve to pack tightly the transition position of connecting cylinder and cable body, prevent that moisture content from getting into.
Mainly there is following problem in it:
1) because connecting cylinder is longer, the perfusion runner is longer, and the perfusion compactness is not enough, causes sealing effectiveness bad;
2) processing of O-ring seal, hoist cable and connecting cylinder all has error, and the deflection after the O-ring seal compression is limited, can not all seal cavities of self adaptation, and cause sealing effectiveness all to meet the demands;
3) heat shrinking sleeve is a kind of cross-linking polyethylene materials; The application life of colored heat shrinking sleeve is lower; Be lower than the high-density polyethylene material that is used for the hoist cable sheath; In order to guarantee its anticorrosion life-span, the heat shrinking sleeve material of employing can only be used black, with the hoist cable sheath color of colour can't be harmonious from the view; In addition, the heat shrinking sleeve material is in heating process, and difficult technique situation such as burning occur easily with its heating-up temperature of accurate control;
4) because heat shrinking sleeve is thinner, in construction, be damaged easily.
Therefore, traditional hoist cable hermetically-sealed construction can't satisfy the instructions for use of hoist cable from durability and two aspects of view property.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of sling of suspension bridge bitter end encapsulating method that satisfies the hoist cable instructions for use from durability and two aspects of view property is provided.
The objective of the invention is to realize like this: a kind of sling of suspension bridge bitter end encapsulating method, said method comprises following processing step:
One section pe sheath is peeled off according to the filling anchor length requirement in the ground tackle earlier fully in the hoist cable end, expose steel tendon;
Pe sheath is dissectd two seams along its length, form the semicircle sheath segment that two afterbodys link to each other.
Steel tendon is passed ground tackle carry out the branch silk;
Steel wire is installed to steel tendon in the ground tackle after separating, and the semicircle sheath segment that two afterbodys that dissect out with clamp link to each other is irritated anchor then, promptly forms anchoring body with epoxy resin iron sand or pltine pouring;
Unload lower clamp after irritating anchor, weld the semicircle sheath segment that two afterbodys link to each other, and then on exposed steel tendon, the connecting cylinder of steel is installed, connecting cylinder directly is connected through bolt or screw thread with ground tackle;
First infusion epoxy resin between pe sheath and connecting cylinder is filled the connecting cylinder end with hydro-expansive rubber bar and hydro-expansive rubber putty then, and the bonnet of screwing, and utilizes the screw thread between the connecting cylinder of bonnet and steel to screw, and compresses the hydro-expansive rubber bar.This bonnet end-on water-expansible rubber bar and hydro-expansive rubber putty provide an actuating pressure that fits tightly; This actuating pressure provides an elastic deformation pressure can on the one hand hydro-expansive rubber bar and hydro-expansive rubber putty, through the elastic deformation realization sealing of hydro-expansive rubber bar and hydro-expansive rubber putty; For the hydro-expansive rubber bar limits restraint forces, when guaranteeing to meet water, rubber strip expands and produces pressure, realizes the water-swellable sealing on the other hand.Hydro-expansive rubber putty is filled in slit between bonnet and the pe sheath.
This technological sealing function is realized through the following aspects:
1) through to carry out bitter end anticorrosion with the original pe sheath of hoist cable (dissect welding) then;
2) through flowability preferably epoxy resin carry out the sealing of ground tackle end;
3), realize the sealing between ground tackle end and the pe sheath through hydro-expansive rubber.
The invention has the beneficial effects as follows:
1) dissecing and solder technology with the pe sheath of hoist cable cable body itself; Shortened the length of the exposed cable wire in ground tackle and hoist cable junction; The hermetically-sealed construction that replaces traditional connecting cylinder heat shrink cover with the length of the sheath that prolongs the hoist cable cable body; Avoid heat shrinking sleeve color and the inconsistent problem of hoist cable sheath color, realized the protection of hoist cable bitter end simultaneously.
2) adopt the water-swellable sealing performance of preparatory water-expansible rubber, realized the self adaptation of encapsulant and hermetically-sealed construction, well filled up the sealing of hoist cable end.
3) hermetically-sealed construction is not easy damage in construction.
4) bonnet of in the operation process of hoist cable, can outwarding winding, inspection sealing situation can be replenished and change hydro-expansive rubber bar putty simultaneously.
Description of drawings
Fig. 1 is the hoist cable structure chart after the extrusion molding blanking in the past.
Fig. 2 is the hoist cable structure chart after stripping was overlapped in the past.
Fig. 3 is the hoist cable structure chart that in the past divided behind the silk.
Fig. 4 was for installed the hoist cable structure chart behind the ground tackle in the past.
Fig. 5 was for installed the hoist cable structure chart behind connecting cylinder and other containment members in the past.
Fig. 6 shells the hoist cable structure chart behind the cover for the present invention.
Fig. 7 shells the hoist cable structure chart one behind the cover for the present invention.
Fig. 8 shells the hoist cable structure chart two behind the cover for the present invention.
Fig. 9 divides the hoist cable structure chart three behind the silk for the present invention.
Figure 10 installs and accomplishes the hoist cable structure chart behind the filling anchor for the present invention.
Figure 11 for sheath of the present invention welding back and accomplish that steel sheath installs the hoist cable structure chart of hoist cable.
Figure 12 is the water-tight sketch map of hoist cable of the present invention end.
Reference numeral among the figure:
Pe sheath 1, steel tendon 2, semicircle sheath segment 3, ground tackle 4, anchor clamps 5, epoxy resin iron sand or pltine 6, connecting cylinder 7, epoxy resin 8, hydro-expansive rubber bar and hydro-expansive rubber putty 9, hydro-expansive rubber putty 10, bonnet 11, anchor cup 12, O-ring seal 13, pressure ring 14, heat shrinking sleeve 15, hoist cable cable body 16;
Irritate the anchor length L
1, dissect length L
2, the connecting cylinder length L
3, divide filament length degree L.
The specific embodiment
Sling of suspension bridge bitter end encapsulating method of the present invention, said method comprises following processing step:
The hoist cable end is first according to the filling anchor length L in the ground tackle
1Require to peel off one section pe sheath 1 fully, expose steel tendon 2, like Fig. 6.Disperse requirement in order to satisfy steel tendon then, again pe sheath is dissectd two seams along its length, form the semicircle sheath segment 3 that two afterbodys link to each other, dissecing length is L
2, like Fig. 7,8.Then steel tendon is passed ground tackle and carry out the branch silk, divide filament length degree L.Pe sheath after dissecing when dividing silk can partly separate, and satisfies the purpose that steel wire divides silk, like Fig. 9.Steel wire is installed to steel tendon in the ground tackle 4 after separating, and clamps the continuous semicircle sheath segment of dissecing out 3 of two afterbodys with anchor clamps 5 then, irritates anchor (forming anchoring bodys with epoxy resin iron sand or pltine 6 pourings) then.Unload lower clamp 5 after irritating anchor, weld the semicircle sheath segment 3 that two afterbodys link to each other, and then on exposed steel tendon, the connecting cylinder 7 of steel is installed, connecting cylinder 7 directly is connected through bolt or screw thread with ground tackle 4, like Figure 10.First infusion epoxy resin 8 between pe sheath 1 and connecting cylinder 7 is filled the connecting cylinder end with hydro-expansive rubber bar and hydro-expansive rubber putty 9 then, and the bonnet 11 of screwing.Hydro-expansive rubber putty 10 is filled in slit between bonnet and the pe sheath, like Figure 11 and Figure 12.
Claims (1)
1. sling of suspension bridge bitter end encapsulating method, it is characterized in that: said method comprises following processing step:
Step 1, peel off pe sheath
One section pe sheath is peeled off according to the filling anchor length requirement in the ground tackle earlier fully in the hoist cable end, expose steel tendon;
Step 2, dissect pe sheath
Pe sheath is dissectd two seams along its length, form the semicircle sheath segment that two afterbodys link to each other;
Step 3, branch silk
Steel tendon is passed ground tackle carry out the branch silk;
Step 4, filling anchor
Steel wire is installed to steel tendon in the ground tackle after separating, and the semicircle sheath segment that two afterbodys that dissect out with clamp link to each other is irritated anchor then, promptly forms anchoring body with epoxy resin iron sand or pltine pouring;
Step 5, welding and installation connecting cylinder
Unload lower clamp after irritating anchor, weld the semicircle sheath segment that two afterbodys link to each other, and then on exposed steel tendon, the connecting cylinder of steel is installed, connecting cylinder directly is connected through bolt or screw thread with ground tackle;
Step 6, sealing
First infusion epoxy resin between pe sheath and connecting cylinder is filled the connecting cylinder end with hydro-expansive rubber bar and hydro-expansive rubber putty then, and the bonnet of screwing, and hydro-expansive rubber putty is filled in the slit between bonnet and the pe sheath.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210007983 CN102535342B (en) | 2012-01-12 | 2012-01-12 | Cable-end sealing method for suspension cable of suspension bridge |
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| CN 201210007983 CN102535342B (en) | 2012-01-12 | 2012-01-12 | Cable-end sealing method for suspension cable of suspension bridge |
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| CN102535342A true CN102535342A (en) | 2012-07-04 |
| CN102535342B CN102535342B (en) | 2013-06-05 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452051A (en) * | 2013-09-23 | 2013-12-18 | 甘肃路桥建设集团有限公司 | Bridge grouting anchor head sealing method |
| CN104894973A (en) * | 2015-07-01 | 2015-09-09 | 湖南省交通规划勘察设计院 | Sealing method for suspension bridge main cable clamp circular seam |
| CN105258929A (en) * | 2015-10-23 | 2016-01-20 | 浙江精工钢结构集团有限公司 | PE cable and cable clamp ball connecting performance test method |
| CN109611513A (en) * | 2018-12-26 | 2019-04-12 | 中国船舶重工集团公司第七0研究所 | A kind of connection wirerope and preparation method thereof |
| RU189373U1 (en) * | 2018-08-31 | 2019-05-21 | Публичное акционерное общество "Северсталь" (ПАО "Северсталь") | Guy |
| CN110538984A (en) * | 2019-09-11 | 2019-12-06 | 广东迈诺工业技术有限公司 | ultrahigh-strength large-diameter steel wire main cable strand anchoring material and anchoring method |
| CN111335164A (en) * | 2020-03-14 | 2020-06-26 | 江苏法尔胜缆索有限公司 | Durable sling anchoring structure |
| RU203750U1 (en) * | 2020-12-09 | 2021-04-20 | Публичное акционерное общество "Северсталь" (ПАО "Северсталь") | Vant |
| CN113802455A (en) * | 2021-08-31 | 2021-12-17 | 北京科技大学 | Anchor device for carbon fiber parallel inhaul cable and anchoring method thereof |
| CN113863136A (en) * | 2020-06-30 | 2021-12-31 | 上海浦江缆索股份有限公司 | High-temperature-resistant fork ear anchor cup type anchorage device and manufacturing method thereof |
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| CN100545351C (en) * | 2007-09-12 | 2009-09-30 | 巨力索具股份有限公司 | Cable suspension rope and preparation method thereof |
| JP2011162942A (en) * | 2010-02-04 | 2011-08-25 | Sumitomo Denko Steel Wire Kk | Saddle structure and tension cable |
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| WO2000056994A1 (en) * | 1999-03-23 | 2000-09-28 | Freyssinet International (Stup) | Device for fixing a structural cable to a building element |
| CN100545351C (en) * | 2007-09-12 | 2009-09-30 | 巨力索具股份有限公司 | Cable suspension rope and preparation method thereof |
| CN101545243A (en) * | 2009-04-27 | 2009-09-30 | 江苏法尔胜新日制铁缆索有限公司 | Stay cable end sealing structure |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452051A (en) * | 2013-09-23 | 2013-12-18 | 甘肃路桥建设集团有限公司 | Bridge grouting anchor head sealing method |
| CN103452051B (en) * | 2013-09-23 | 2016-06-29 | 甘肃路桥建设集团有限公司 | Bridge mud jacking anchor head encapsulating method |
| CN104894973B (en) * | 2015-07-01 | 2016-09-07 | 湖南省交通规划勘察设计院 | Sealing method for suspension bridge main cable clamp circular seam |
| CN104894973A (en) * | 2015-07-01 | 2015-09-09 | 湖南省交通规划勘察设计院 | Sealing method for suspension bridge main cable clamp circular seam |
| CN105258929B (en) * | 2015-10-23 | 2019-04-16 | 浙江精工钢结构集团有限公司 | A kind of test method of PE rope and cord clip ball switching performance |
| CN105258929A (en) * | 2015-10-23 | 2016-01-20 | 浙江精工钢结构集团有限公司 | PE cable and cable clamp ball connecting performance test method |
| RU189373U1 (en) * | 2018-08-31 | 2019-05-21 | Публичное акционерное общество "Северсталь" (ПАО "Северсталь") | Guy |
| CN109611513A (en) * | 2018-12-26 | 2019-04-12 | 中国船舶重工集团公司第七0研究所 | A kind of connection wirerope and preparation method thereof |
| CN110538984A (en) * | 2019-09-11 | 2019-12-06 | 广东迈诺工业技术有限公司 | ultrahigh-strength large-diameter steel wire main cable strand anchoring material and anchoring method |
| CN110538984B (en) * | 2019-09-11 | 2021-04-23 | 广东迈诺工业技术有限公司 | Preparation and anchor grouting method of ultrahigh-strength large-diameter steel wire main cable strand anchoring material |
| CN111335164A (en) * | 2020-03-14 | 2020-06-26 | 江苏法尔胜缆索有限公司 | Durable sling anchoring structure |
| CN113863136A (en) * | 2020-06-30 | 2021-12-31 | 上海浦江缆索股份有限公司 | High-temperature-resistant fork ear anchor cup type anchorage device and manufacturing method thereof |
| RU203750U1 (en) * | 2020-12-09 | 2021-04-20 | Публичное акционерное общество "Северсталь" (ПАО "Северсталь") | Vant |
| CN113802455A (en) * | 2021-08-31 | 2021-12-17 | 北京科技大学 | Anchor device for carbon fiber parallel inhaul cable and anchoring method thereof |
| CN113802455B (en) * | 2021-08-31 | 2022-06-28 | 北京科技大学 | Anchor device for carbon fiber parallel inhaul cable and anchoring method thereof |
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