CN102535342B - 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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- CN102535342B CN102535342B CN 201210007983 CN201210007983A CN102535342B CN 102535342 B CN102535342 B CN 102535342B CN 201210007983 CN201210007983 CN 201210007983 CN 201210007983 A CN201210007983 A CN 201210007983A CN 102535342 B CN102535342 B CN 102535342B
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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 bridge floor load to be passed to the main bearing member of main push-towing rope by 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.Need to peel off the anticorrosion pe sheath of hoist cable in this process.Therefore, this position becomes the central core of circulation that moisture content and other hazardous substancess enter cable body.In view of above reason, adopt the bitter end Sealing Technology to enter the hoist cable cable body to prevent water part and other hazardous substancess, thereby affect the durability of hoist cable.Therefore, the bitter end hermetically-sealed construction of hoist cable has directly affected 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 as follows: the hoist cable sheath is peeled off fully according to the length that requires that can satisfy the steel wire dispersion, then steel wire is disperseed, after filling with anchor, the connecting cylinder of steel is installed on exposed steel tendon again, infusion epoxy resin encapsulant after installing, silicone rubber seal cushion rubber and pressure ring are installed at connecting cylinder with between with the hoist cable of pe sheath again, are adopted the heat shrinking sleeve that can shrink after 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 exposed steel wire;
3) utilize pressure ring press seal cushion rubber, 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 entering.
Mainly there is following problem in it:
1) because connecting cylinder is longer, the perfusion runner is longer, and the perfusion compactness is inadequate, 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, will 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 that adopts 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 technique is difficult to accurately control its heating-up temperature, the situations such as burning easily occur;
4) because heat shrinking sleeve is thinner, easily be damaged in construction.
Therefore, traditional hoist cable hermetically-sealed construction can't satisfy from durability and view two aspects the instructions for use of hoist cable.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of cable-end sealing method for suspension cable of suspension bridge that satisfies the hoist cable instructions for use from durability and view two aspects is provided.
The object of the present invention is achieved like this: a kind of cable-end sealing method for suspension cable of suspension bridge, and described method comprises following processing step:
Rope end is first peeled off one section pe sheath fully according to the filling anchor length requirement in ground tackle, expose steel tendon;
Pe sheath is dissectd two seams along its length, form the semicircle sheath segment that two afterbodys are connected.
Steel tendon is passed ground tackle carry out sub-wire;
Steel wire is installed to steel tendon in ground tackle after separating, and then the semicircle sheath segment that two afterbodys that dissect out with clamp are connected fills with anchor, namely forms anchoring body with epoxy resin iron sand or pltine pouring;
Unload lower clamp after filling with anchor, weld the semicircle sheath segment that two afterbodys are connected, and then the connecting cylinder of steel is installed on exposed steel tendon, connecting cylinder directly is connected by bolt or screw thread with ground tackle;
Then 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, and is screwed bonnet, utilizes the screw thread between the connecting cylinder of bonnet and steel to screw, compression 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, by 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.Gap filling hydro-expansive rubber putty between bonnet and pe sheath.
The sealing function of this technology is realized by the following aspects:
1) by to carry out bitter end anticorrosion with the original pe sheath of hoist cable (dissect then welding);
2) by mobility preferably epoxy resin carry out the sealing of ground tackle end;
3) by hydro-expansive rubber, realize the sealing between ground tackle end and pe sheath.
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 of 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 extends the hoist cable cable body, avoid heat shrinking sleeve color and the inconsistent problem of hoist cable sheath color, realized simultaneously the protection of hoist cable bitter end.
2) adopt the water-swellable sealing performance of pre-water-expansible rubber, realized the self adaptation of encapsulant and hermetically-sealed construction, well filled up the sealing of rope end.
3) hermetically-sealed construction is not easy damage in construction.
4) bonnet of can outwarding winding in the operation process of hoist cable checks the sealing situation, can replenish simultaneously and change hydro-expansive rubber bar putty.
Description of drawings
Fig. 1 is the hoist cable structure chart after 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 after sub-wire in the past.
Fig. 4 was for installed the hoist cable structure chart after ground tackle in the past.
Fig. 5 was for installed the hoist cable structure chart after connecting cylinder and other containment members in the past.
Fig. 6 is the hoist cable structure chart after the present invention shells cover.
Fig. 7 is the hoist cable structure chart one after the present invention shells cover.
Fig. 8 is the hoist cable structure chart two after the present invention shells cover.
Fig. 9 is the hoist cable structure chart three after sub-wire of the present invention.
Figure 10 is the hoist cable structure chart after the present invention installs and complete the filling anchor.
Figure 11 be after sheath of the present invention welding and complete that steel sheath installs the hoist cable structure chart of hoist cable.
Figure 12 is the water-tight schematic diagram of rope end of the present invention.
Reference numeral in figure:
Pe sheath 1, steel tendon 2, semicircle sheath segment 3, ground tackle 4, fixture 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;
Fill with the anchor length L
1, dissect length L
2, the connecting cylinder length L
3, the sub-wire length L.
The specific embodiment
Cable-end sealing method for suspension cable of suspension bridge of the present invention, described method comprises following processing step:
Rope end is first according to the filling anchor length L in ground tackle
1Require to peel off one section pe sheath 1 fully, expose steel tendon 2, as Fig. 6.Then disperse requirement in order to satisfy steel tendon, then pe sheath is dissectd two seams along its length, form the semicircle sheath segment 3 that two afterbodys are connected, dissecing length is L
2, as Fig. 7,8.Then steel tendon is passed ground tackle and carry out sub-wire, the sub-wire length L.Pe sheath after dissecing during sub-wire can partly separate, and satisfies the purpose of steel wire sub-wire, as Fig. 9.Steel wire is installed to steel tendon in ground tackle 4 after separating, and then clamps with fixture 5 the connected semicircle sheath segment 3 of two afterbodys of dissecing out, and then fills with anchor (with epoxy resin iron sand or pltine 6 pouring formation anchoring bodys).Unload lower clamp 5 after filling with anchor, weld the semicircle sheath segment 3 that two afterbodys are connected, and then the connecting cylinder 7 of steel is installed on exposed steel tendon, connecting cylinder 7 directly is connected by bolt or screw thread with ground tackle 4, as Figure 10.Then 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, and is screwed bonnet 11.Gap filling hydro-expansive rubber putty 10 between bonnet and pe sheath is as Figure 11 and Figure 12.
Claims (1)
1. cable-end sealing method for suspension cable of suspension bridge, it is characterized in that: described method comprises following processing step:
Step 1, peel off pe sheath
Rope end is first peeled off one section pe sheath fully according to the filling anchor length requirement in ground tackle, 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 are connected;
Step 3, sub-wire
Steel tendon is passed ground tackle carry out sub-wire;
Step 4, filling anchor
Steel wire is installed to steel tendon in ground tackle after separating, and then the semicircle sheath segment that two afterbodys that dissect out with clamp are connected fills with anchor, namely forms anchoring body with the pltine pouring;
Step 5, welding and installation connecting cylinder
Unload lower clamp after filling with anchor, weld the semicircle sheath segment that two afterbodys are connected, and then the connecting cylinder of steel is installed on exposed steel tendon, connecting cylinder directly is connected by bolt or screw thread with ground tackle;
Step 6, sealing
Then 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, and is screwed bonnet, the gap filling hydro-expansive rubber putty between bonnet and pe sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210007983 CN102535342B (en) | 2012-01-12 | 2012-01-12 | Cable-end sealing method for suspension cable of suspension bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 CN102535342A (en) | 2012-07-04 |
| CN102535342B true CN102535342B (en) | 2013-06-05 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000056994A1 (en) * | 1999-03-23 | 2000-09-28 | Freyssinet International (Stup) | Device for fixing a structural cable to a building element |
| 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 |
| 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 |
-
2012
- 2012-01-12 CN CN 201210007983 patent/CN102535342B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP2011162942A (en) * | 2010-02-04 | 2011-08-25 | Sumitomo Denko Steel Wire Kk | Saddle structure and tension cable |
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| CN102535342A (en) | 2012-07-04 |
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