CN102733302B - Sealing device for suspension bridge main cable anchoring system in-anchor-room cable ducts, and protection method thereof - Google Patents
Sealing device for suspension bridge main cable anchoring system in-anchor-room cable ducts, and protection method thereof Download PDFInfo
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- CN102733302B CN102733302B CN201210233244.5A CN201210233244A CN102733302B CN 102733302 B CN102733302 B CN 102733302B CN 201210233244 A CN201210233244 A CN 201210233244A CN 102733302 B CN102733302 B CN 102733302B
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Abstract
The invention discloses a sealing device for suspension bridge main cable anchoring system in-anchor-room cable ducts, comprising a cable strand bound by a plurality of high-strength galvanized steel wires, a cable duct for fixing the cable strand, and an anchor head, wherein an anchor bearing plate is arranged on the anchor head; a corrosion resistant sealant layer is arranged on the bottom of the in-anchor-room cable duct; a non-sulfurized non-drying corrosion resistant sealant layer is arranged in the middle of the in-anchor-room cable duct; and a polysulfide corrosion resistant sealant layer is arranged at a port of the cable duct on a front anchor face of an anchor room. A protection method of the main cable anchoring system in-anchor-room cable ducts is provided by the invention, and the corrosion resistant sealants poured on the bottom of the cable duct, and the non-sulfurized non-drying corrosion resistant sealants poured in the cable duct are polyisobutene non-drying sealants; the products are permanently-non-drying sealants, and are mixed with loose cables as a whole; when bridges shade by outside influence, the polyisobutene non-drying sealing pastes also are not separated from the steel wires in the cable ducts to form an entire sealing system.
Description
Technical field
The present invention relates to the indoor cable guide pipe sealing device of a kind of main rope of suspension bridge anchor system anchor and means of defence thereof, this system comprises cable guide pipe and loose strand anchor device.
Background technology
Because suspension bridge span ability is large and beautiful design, so the construction of suspension bridge in recent years enters fast-developing period.The main supporting member of suspension bridge is suspension cable, is the stressed lifeline of full bridge structure, and steel (steel wire, steel strand, wirerope etc.) that general tensile strength is high make, so to the protection of main push-towing rope system and anticorrosion most important.The indoor cable guide pipe part of main push-towing rope anchorage zone anchor, due to the space constraint of construction, can only do simple protection, can not reach desirable antiseptic effect.
Protection at present for the indoor cable guide pipe sealing of main rope of suspension bridge anchor system anchor has following several method: 1. anchor indoor location dehumidification system, and is provided with overfall gap at cable guide pipe afterbody, makes anchor indoor be in the environment of a relatively dry; 2. pour into the oil substances such as paraffin in cable guide pipe; 3. adopt polyurethane foam to seal cable guide pipe.For method 1, although dehumidification system can reduce the humidity of anchor indoor, but narrow space in cable guide pipe, atmosphere draught-free, easy generation condensed water, and water can not be drained by dehumidification system timely, makes cable guide pipe be in moist environment for a long time like this, cause steel wire corrosion in cable guide pipe, thus have influence on the life-span of whole main push-towing rope; For method 2, the oil substances such as the paraffin of perfusion in cable guide pipe are general the highest can only the temperature of resistance to 60-70 DEG C, if long-time solar exposure, will form hot environment, oil substances will be caused like this to dissolve and volatilization, have a strong impact on the antiseptic effect to cable guide pipe and loose rope; For method 3, form an independently entirety after polyurethane foam, can not be integrated with the loose hitch in cable guide pipe, suspension bridge is in long use procedure, if stressed larger generation is rocked, the polyurethane of foaming like this will be subject to serious destruction, thus affects antiseptic effect.
Summary of the invention
Object of the present invention is just to overcome the deficiencies in the prior art part, provide a kind of can for a long time to the means of defence of the indoor cable guide pipe sealing of main rope of suspension bridge anchor system anchor.
Technical scheme of the present invention is: the indoor cable guide pipe sealing device of main rope of suspension bridge anchor system anchor, comprise the strand become by multiply high-strength galvanized steel wire bundle, the cable guide pipe of fixing strand and anchor head, anchor head is provided with anchor plate, the bottom of the indoor cable guide pipe of described anchor is provided with preserving and sealing glue-line, the middle part of the indoor cable guide pipe of anchor is provided with unvulcanised non-drying preserving and sealing glue-line, preserving and sealing glue-line contacts with unvulcanised non-drying preserving and sealing glue-line, before anchor room, the port of anchor face cable guide pipe is provided with poly-sulphur preserving and sealing glue-line, unvulcanised non-drying preserving and sealing glue-line contacts with poly-sulphur preserving and sealing glue-line, unvulcanised non-drying preserving and sealing glue-line is provided with bottom the anchor head of anchor face behind anchor room, behind anchor room, anchor face anchor head surrounding is provided with poly-sulphur preserving and sealing glue-line.
Described main rope of suspension bridge anchor system anchor indoor cable guide pipe sealing device means of defence, first cable guide pipe tube wall is cleared up, then the process of anchor indoor cable guide pipe foot guard is carried out, carry out the protective treatment with port in the middle part of cable guide pipe again, described cable guide pipe foot guard is treated to and pours into preserving and sealing glue MF860L bottom cable guide pipe, described middle part and port-guard process comprise the following steps: after the preserving and sealing glue MF860L bottom (1) cable guide pipe solidifies, and perfusion unvulcanised non-drying preserving and sealing glue MF-DJ2000G is to distance port 5-8cm place; (2) apply non-sagging type vulcanization type and gather sulphur preserving and sealing agent MF860F to port and high outbound port 3-5cm; (3) unvulcanised non-drying preserving and sealing glue MF-DJ2000G is applied after strand bottom the anchor head of anchor face, the non-sagging type vulcanization type of anchor head surrounding coating gathers sulphur preserving and sealing glue MF860F, and non-sagging type vulcanization type gathers sulphur preserving and sealing glue MF860F sulfuration and applies non-yellow stain type polyurethane finish later.
The coating thickness that described non-sagging type vulcanization type gathers sulphur preserving and sealing glue MF860F is 2-3 cm.
The invention has the beneficial effects as follows: the means of defence of the indoor cable guide pipe sealing of main push-towing rope anchor system anchor provided by the invention, the perfusion preserving and sealing glue MF860L poured into bottom cable guide pipe, be be that the pouring type of the bi-component normal temperature cure that base-material is made into gathers sulphur preserving and sealing glue with liquid polysulphide rubber, there is good bonding and ageing-resistant performance.In cable guide pipe, the unvulcanised non-drying preserving and sealing glue of perfusion refers to polyisobutene non-drying sealing compound, this product is permanent non-drying sealant, lump together with loose rope, when bridge be subject to ectocine produce rock time, polyisobutene non-drying sealing compound is also inseparable with steel wire in cable guide pipe, form a complete sealing system, the degree of unsaturation of adding polyisobutylene synthetic rubber is extremely low, and side chain is methyl, form helicoidal structure, so strand is submissiveer, good springiness, vitrification point are low, there is good ageing-resistant performance.The non-sagging type vulcanization type that cable guide pipe port and rear anchor face protective cover circumferential weld use gathers sulphur preserving and sealing glue MF860F, take liquid polysulphide rubber as the two-part room temperature curing fluid sealant that base-material is made into, ambient temperature curing formation elastic body, there is excellent oil resistant, ageing-resistant performance, and have very strong cementability.The clad that encapsulant is formed, namely one deck rubber membrane, has fine and close network structure, effectively can stop passing through of gaseous state and liquid corrosive medium molecule, thus source of corrosion gear by outside encapsulant, play good sealing and antisepsis.The non-yellow stain type polyurethane finish of surface coating, has the water-fast salt spray resistance of excellent ultraviolet-resistant aging and acid mist, and has good pliability and stretch-proof performance.Various anti-corrosion material cooperatively interacts, and forms a complete protection system to cable guide pipe and loose cable system.The present invention is also applicable to the anticorrosive coating at the positions such as bridge stay cable, arch bridge tie-rod, hoist cable.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Detailed description of the invention
The indoor cable guide pipe sealing device of main rope of suspension bridge anchor system anchor, comprise the strand 6 become by multiply high-strength galvanized steel wire bundle, the cable guide pipe 3 of fixing strand 6 and anchor head, anchor head is provided with anchor plate 8, it is characterized in that: the bottom of the indoor cable guide pipe 3 of described anchor is provided with preserving and sealing glue-line 7, the middle part of the indoor cable guide pipe 3 of anchor is provided with unvulcanised non-drying preserving and sealing glue-line 5, preserving and sealing glue-line 7 contacts with unvulcanised non-drying preserving and sealing glue-line 5, before anchor room, the port of anchor face 4 cable guide pipe 3 is provided with poly-sulphur preserving and sealing glue-line 1, unvulcanised non-drying preserving and sealing glue-line 5 contacts with poly-sulphur preserving and sealing glue-line 1, unvulcanised non-drying preserving and sealing glue-line 5 is provided with bottom the anchor head of anchor face 2 behind anchor room, behind anchor room, anchor face anchor head surrounding is provided with poly-sulphur preserving and sealing glue-line 1.
The means of defence of the indoor cable guide pipe sealing device of main rope of suspension bridge anchor system anchor, first cable guide pipe tube wall is cleared up, then the process of anchor indoor cable guide pipe foot guard is carried out, carry out the protective treatment with port in the middle part of cable guide pipe again, described cable guide pipe foot guard is treated to and pours into preserving and sealing glue MF860L bottom cable guide pipe, a sealed base is formed after solidification, described middle part and port-guard process comprise the following steps: after the preserving and sealing glue MF860L bottom (1) cable guide pipe solidifies, perfusion unvulcanised non-drying preserving and sealing glue MF-DJ2000G is to distance port 5-8cm place, unvulcanised non-drying preserving and sealing glue MF-DJ2000G take polyisobutylene synthetic rubber as base, permanent non-drying sealing compound is formed after adding certain corrosion inhibitor, this product is to light, heat, ozone has good inertia, can keep soft non-sclerous for a long time.Moisture is once enter in cable guide pipe, and the corrosion inhibitor inside non-drying sealing compound and water produce passivating solution, can stop the corrosion to loose Suo Gangsi; (2) apply non-sagging type vulcanization type and gather sulphur preserving and sealing agent MF860F to port and high outbound port 3-5cm, the coating thickness that non-sagging type vulcanization type gathers sulphur preserving and sealing glue MF860F is 2-3 cm, it is take liquid polysulphide rubber as the two-part room temperature curing fluid sealant that base-material is made into that non-sagging type vulcanization type gathers sulphur preserving and sealing glue MF860F, there is very strong adhesive property, and there is good oil resistant, water-fast, ageing-resistant, decay resistance; (3) unvulcanised non-drying preserving and sealing glue MF-DJ2000G is applied after strand bottom the anchor head of anchor face, the non-sagging type vulcanization type of anchor head surrounding coating gathers sulphur preserving and sealing glue MF860F, non-sagging type vulcanization type gathers sulphur preserving and sealing glue MF860F sulfuration and applies non-yellow stain type polyurethane finish later, non-yellow stain type polyurethane finish has the water-fast salt spray resistance of excellent ultraviolet-resistant aging and acid mist, and there are good pliability and stretch-proof performance, brush non-yellow stain type polyurethane finish three road altogether, thickness is about 100 μm.
In the present invention, preserving and sealing glue MF860L, poly-sulphur preserving and sealing glue MF860F, unvulcanised non-drying preserving and sealing glue MF-DJ2000G are purchased from Zheng Zhou Zhongyuan Applied Technology Research & Development Co., Ltd.
Claims (3)
1. the indoor cable guide pipe sealing device of main rope of suspension bridge anchor system anchor, comprise the strand (6) become by multiply high-strength galvanized steel wire bundle, the cable guide pipe (3) of fixing strand (6) and anchor head, anchor head is provided with anchor plate (8), it is characterized in that: the bottom of the indoor cable guide pipe (3) of described anchor is provided with preserving and sealing glue-line (7), the middle part of the indoor cable guide pipe (3) of anchor is provided with unvulcanised non-drying preserving and sealing glue-line (5), preserving and sealing glue-line (7) contacts with unvulcanised non-drying preserving and sealing glue-line (5), before anchor room, the port of anchor face (4) cable guide pipe (3) is provided with poly-sulphur preserving and sealing glue-line (1), unvulcanised non-drying preserving and sealing glue-line (5) contacts with poly-sulphur preserving and sealing glue-line (1), unvulcanised non-drying preserving and sealing glue-line (5) is provided with bottom anchor face (2) anchor head behind anchor room, behind anchor room, anchor face anchor head surrounding is provided with poly-sulphur preserving and sealing glue-line (1).
2. the means of defence of the indoor cable guide pipe sealing device of main rope of suspension bridge anchor system anchor, it is characterized in that: first cable guide pipe tube wall is cleared up, then the process of anchor indoor cable guide pipe foot guard is carried out, carry out the protective treatment with port in the middle part of cable guide pipe again, described cable guide pipe foot guard is treated to and pours into preserving and sealing glue MF860L bottom cable guide pipe, described middle part and port-guard process comprise the following steps: after the preserving and sealing glue MF860L 1. bottom cable guide pipe solidifies, and perfusion unvulcanised non-drying preserving and sealing glue MF-DJ2000G is to distance port 5-8cm place; 2. apply non-sagging type vulcanization type and gather sulphur preserving and sealing agent MF860F to port and high outbound port 3-5cm; 3. unvulcanised non-drying preserving and sealing glue MF-DJ2000G is applied after strand bottom the anchor head of anchor face, the non-sagging type vulcanization type of anchor head surrounding coating gathers sulphur preserving and sealing glue MF860F, and non-sagging type vulcanization type gathers sulphur preserving and sealing glue MF860F sulfuration and applies non-yellow stain type polyurethane finish later.
3. the indoor cable guide pipe sealing device of main rope of suspension bridge anchor system anchor according to claim 2 means of defence, it is characterized in that: the coating thickness that described non-sagging type vulcanization type gathers sulphur preserving and sealing glue MF860F is 2-3 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210233244.5A CN102733302B (en) | 2012-07-06 | 2012-07-06 | Sealing device for suspension bridge main cable anchoring system in-anchor-room cable ducts, and protection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210233244.5A CN102733302B (en) | 2012-07-06 | 2012-07-06 | Sealing device for suspension bridge main cable anchoring system in-anchor-room cable ducts, and protection method thereof |
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| Publication Number | Publication Date |
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| CN102733302A CN102733302A (en) | 2012-10-17 |
| CN102733302B true CN102733302B (en) | 2015-04-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1245233A (en) * | 1999-09-15 | 2000-02-23 | 北京航空材料研究院 | Method and structure for protecting primary cable system of suspension bridge |
| JP2005344295A (en) * | 2004-05-31 | 2005-12-15 | Takashi Daiguuji | Method and structure for anchoring structural cable |
| CN101307591A (en) * | 2008-07-09 | 2008-11-19 | 中交第四航务工程局有限公司 | Rope-suspension bridge cable system anti-corrosive protecting method and cable system anti-corrosive protecting structure |
| KR20090123391A (en) * | 2008-05-28 | 2009-12-02 | 주식회사 휴먼브릿지 | The sidewalk suspension bridge in which separation constructing main cable at side-to-side of main tower |
| CN201627143U (en) * | 2009-11-06 | 2010-11-10 | 中国航空工业集团公司北京航空材料研究院 | Bridge wire strand seal protective structure |
-
2012
- 2012-07-06 CN CN201210233244.5A patent/CN102733302B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1245233A (en) * | 1999-09-15 | 2000-02-23 | 北京航空材料研究院 | Method and structure for protecting primary cable system of suspension bridge |
| JP2005344295A (en) * | 2004-05-31 | 2005-12-15 | Takashi Daiguuji | Method and structure for anchoring structural cable |
| KR20090123391A (en) * | 2008-05-28 | 2009-12-02 | 주식회사 휴먼브릿지 | The sidewalk suspension bridge in which separation constructing main cable at side-to-side of main tower |
| CN101307591A (en) * | 2008-07-09 | 2008-11-19 | 中交第四航务工程局有限公司 | Rope-suspension bridge cable system anti-corrosive protecting method and cable system anti-corrosive protecting structure |
| CN201627143U (en) * | 2009-11-06 | 2010-11-10 | 中国航空工业集团公司北京航空材料研究院 | Bridge wire strand seal protective structure |
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| CN102733302A (en) | 2012-10-17 |
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Address after: 450001 Zhengzhou high tech Zone, Henan, Holly Street West, No. 100 Patentee after: Zhengzhou Zhongyuan think blue hi tech Limited by Share Ltd Address before: The road high tech Zone screen 450001 Henan province Zhengzhou City No. 26 Patentee before: Zhengzhou Zhongyuan Applied Technology Research and Development Co., Ltd. |
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