CN104652276B - A kind of main rope of suspension bridge PPWS construction strand erection method in situ - Google Patents
A kind of main rope of suspension bridge PPWS construction strand erection method in situ Download PDFInfo
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- CN104652276B CN104652276B CN201510013329.6A CN201510013329A CN104652276B CN 104652276 B CN104652276 B CN 104652276B CN 201510013329 A CN201510013329 A CN 201510013329A CN 104652276 B CN104652276 B CN 104652276B
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Abstract
The present invention specifically provides a kind of main rope of suspension bridge PPWS construction strand erection method in situ, comprises the steps: 1) set up cat road below main push-towing rope；2) erection of trailer system；3) on cat road, interval arranges several movable strand cylinders, and the axis of movable strand cylinder is positioned at the surface of main push-towing rope axis；4) being connected with strand one end by the device that pulls of trailer system, strand is under the dynamic action of the rack winch of trailer system and the supporting role of movable strand cylinder, and strand traction is inserted into predeterminated position；5) after strand traction is inserted into predeterminated position, cancelling each movable strand cylinder support to strand, strand falls within main push-towing rope under gravity；6) when nighttime temperature is stablized, strand is carried out sag adjustment, complete the erection of strand；7) step 1 is repeated)～6), complete the erection of whole main cable strand.The present invention needs not move through lifting can make strand be located in design attitude with traversing, has process links few, the advantage that working performance is high, safety is high.
Description
Technical field
A kind of method that the present invention relates to main rope of suspension bridge erection construction, is specifically related to a kind of main rope of suspension bridge PPWS construction strand erection method in situ.
Background technology
Modern suspension, as the strongest bridge type of span ability, is widely used in bridge construction.Main push-towing rope, as the main load-carrying construction of suspension bridge, is typically made up of the high tensile steel wire about thousands of to tens thousand of diameter phi 5mm.
Major part suspension bridge high tensile steel wire main push-towing rope all uses Prefabricated parallel cable strand method (prefabricated parallel both at home and abroad
Wire strands is called for short PPWS method) set up.Prefabricated parallel cable strand method (PPWS method) is to become to have the parallel wire unit of regular hexagonal section by some steel wire combination in advance, with the wrapping sizing of fiber strength band, forming parallel stranded metallic cable, anchor head is installed at two ends, then play volume transport on dish and, to job site, after erected on site, form main push-towing rope.
Traditional main push-towing rope PPWS Strand Erection method, as depicted in figs. 1 and 2, it is essentially all on construction catwalk 5 interval and several tradition strand cylinders 4 are set, at a certain distance from the position of this tradition strand cylinder 4 is outside skew main push-towing rope 3 axis, tradition strand cylinder 4 is made up of tradition strand rolling stand 4-1 and the traditional strand barrel 4-2 being arranged on tradition strand rolling stand 4-1, strand 2 is placed on tradition strand barrel 4-2, and several tradition strand cylinders 4 form the support system of strand 2.When strand 2 sets up, strand 2 from suspension bridge one end at the dilatory of trailer system 1 and the other end that arrives bridge under the support of tradition strand cylinder 4.Afterwards, at Sarasota top and anchorage, promote Traverse Displacement Unit with strands such as tackle pulley, by overall for strand 2 lift-off tradition strand cylinder 4, be then laterally moved to the design attitude at main push-towing rope 3 axis.The tens of up to a hundred strand 2 counterpoise second minings of full-bridge set up by same method.
Traditional main push-towing rope PPWS Strand Erection method, PPWS Strand Erection hour offset main push-towing rope certain distance, strand need to be through promoting and the traversing design attitude that just can be displaced to main push-towing rope.But, for the lifting device of suspension bridge strand of main span 1500m it is generally required to the lifting force of about 500kN, along with the requirement to lifting force that increases of Suspension Bridges can be bigger.Huge lifting force and for work high above the ground, also exists gripping rope device when construction equipment requirement is high, strand promotes and there is the possibility of sliding, have certain security risk.And when strand promotes traversing operation, the installation of work tool and dismounting, and promote traversing operation process and be required to the activity duration up to more than 2 hours, the most unfavorable to efficiency of construction.
Summary of the invention
It is an object of the invention to a kind of main rope of suspension bridge PPWS construction strand erection method in situ, overcome traditional main push-towing rope PPWS Strand Erection method construction equipment is required height, there is potential safety hazard, problem that efficiency of construction is low.
To this end, the invention provides a kind of main rope of suspension bridge PPWS construction strand erection method in situ, comprise the steps:
1) in the lower section of main push-towing rope, being parallel to main push-towing rope direction and set up work high above the ground construction passage cat road, Mao Dao two ends are individually fixed on the anchorage at suspension bridge two ends, and centre is supported by Sarasota.
2) erection of the trailer system of main cable strand；Trailer system includes hauling rope, pulls device and rack winch, and hauling rope is installed on the top of main push-towing rope, pulls device and is fixed on hauling rope, and rack winch is placed on the anchorage of suspension bridge side, and hauling rope end is connected with rack winch.
3) on cat road, interval arranges several movable strand cylinders, and the axis of this several movable strand cylinder is in same level, and the axis of movable strand cylinder is positioned at the surface of main push-towing rope axis.
4) being connected with strand one end by the device that pulls of trailer system, strand is placed on movable strand cylinder, and strand is under the dynamic action of rack winch and the supporting role of movable strand cylinder, and strand traction is inserted into predeterminated position.
5) after strand traction is inserted into predeterminated position, tower top cancelling each movable strand cylinder support to strand successively to span centre, strand under gravity, falls within main push-towing rope.
6) when nighttime temperature is stablized, respectively with jack folding and unfolding strand at Sarasota tower top and anchorage, by strand sag adjustment to designing sag, the erection of strand is completed.
7) step 1 is repeated)～6), complete the erection of whole main cable strand.
Above-mentioned movable strand cylinder is made up of movable strand rolling stand, movable strand barrel, hinge pin and bearing pin；Movable strand barrel one end is flexibly connected with movable strand rolling stand by hinge pin, and the movable strand barrel other end is connected by bearing pin is fixing with movable strand rolling stand.
Above-mentioned movable strand cylinder spacing distance on cat road is 9～12m.
Between above-mentioned movable strand cylinder axis and main push-towing rope axis distance is main push-towing rope diameter 0.8～1.0 times.
Above-mentioned steps 6) in nighttime temperature stabilize to strand length direction temperature difference △ T1≤ 2 DEG C, strand section direction temperature difference △ T2≤1℃。
Beneficial effects of the present invention: this main rope of suspension bridge PPWS construction strand erection method in situ that the present invention provides changes the traditional method that strand sets up at a certain distance from offseting outside main push-towing rope centrage, make strand set up in the surface of the original design attitude of main push-towing rope, has set up rear strand and needed not move through lifting and traversing can be located in design attitude；It is few that the method has process links, the feature that working performance is high, and owing to decreasing high-altitude tremendous increase masterpiece industry, working security is greatly improved.
Below with reference to accompanying drawing, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 is traditional main push-towing rope PPWS Strand Erection schematic diagram.
Fig. 2 is A-A generalized section in Fig. 1.
Fig. 3 is the Strand Erection schematic diagram of movable strand cylinder in the present invention.
Fig. 4 is that in the present invention, the Strand Erection of movable strand cylinder completes schematic diagram.
Fig. 5 is main push-towing rope PPWS Strand Erection overall schematic of the present invention.
Description of reference numerals: 1, trailer system；2, strand；3, main push-towing rope；4, tradition strand cylinder；4-1, tradition strand rolling stand；4-2, tradition strand barrel；5, Mao Dao；6, movable strand cylinder；6-1, movable strand rolling stand；6-2 activity strand barrel；6-3, hinge pin；6-4, bearing pin；7, device is pulled；8, cat road door frame；9, rack winch；10, hauling rope；11, Sarasota；12, anchorage.
Detailed description of the invention
Embodiment 1:
In order to overcome traditional main push-towing rope PPWS Strand Erection method construction equipment is required height, there is potential safety hazard, problem that efficiency of construction is low, present embodiments provide a kind of main rope of suspension bridge PPWS construction strand erection method in situ as shown in Figure 5, it is characterised in that: comprise the steps:
1) in the lower section of main push-towing rope 3, it is parallel to main push-towing rope 3 direction and sets up work high above the ground construction passage cat road 5；Cat road 5, according to different across footpath, is made up of affiliated facilities such as some steel wire ropes being approximately parallel to main push-towing rope 3 and veils, and its two ends are anchored on the anchorage 12 at suspension bridge two ends respectively, middle by the support of Sarasota 11 tower top.
2) erection of the trailer system 1 of main cable strand；Trailer system 1 includes hauling rope 10, pulls device 7 and rack winch 9, and hauling rope 10 is installed on the top of main push-towing rope 3, pulls device 7 and is fixed on hauling rope 10, and rack winch 9 is placed on the anchorage 12 of suspension bridge side, and hauling rope 10 end is connected with rack winch 9.
3) on cat road 5, interval arranges several movable strand cylinders 6, and the axis of this several movable strand cylinder 6 is in same level, and the axis of movable strand cylinder 6 is positioned at the surface of main push-towing rope 3 axis.
4) device 7 that pulls of trailer system 1 is connected with strand 2 one end, strand 2 is placed on movable strand cylinder 6, strand 2 is under the dynamic action of rack winch 9 and the supporting role of movable strand cylinder 6, strand 2 is vertically disposed cat road door frame 8 between hauling rope 10 and cat road 5, and from the side of suspension bridge, traction is inserted into predeterminated position.
5) after strand 2 traction is inserted into predeterminated position, tower top cancelling each movable strand cylinder 6 support to strand 2 successively to span centre, strand 2 under gravity, falls within main push-towing rope 3.
6) when nighttime temperature is stablized, i.e. strand 2 length direction temperature difference △ T1≤ 2 DEG C, strand 2 section direction temperature difference △ T2≤ 1 DEG C, respectively with jack folding and unfolding strand 2 at Sarasota 11 tower top and anchorage 12, by strand 2 sag adjustment to designing sag, complete the erection of strand 2.
7) step 1 is repeated)～6), complete the erection of whole main cable strand.
This main rope of suspension bridge PPWS construction strand erection method in situ that this invention provides changes the traditional method that strand sets up at a certain distance from offseting outside main push-towing rope centrage, make strand set up in the surface of the original design attitude of main push-towing rope, has set up rear strand and needed not move through lifting and traversing can be located in design attitude；It is few that the method has process links, the feature that working performance is high, and owing to decreasing high-altitude tremendous increase masterpiece industry, working security is greatly improved.
Embodiment 2:
On the basis of embodiment 1, as shown in Figure 3 and Figure 4, described movable strand cylinder 6 is made up of movable strand rolling stand 6-1, movable strand barrel 6-2, hinge pin 6-3 and bearing pin 6-4；Movable strand barrel 6-2 one end is flexibly connected with movable strand rolling stand 6-1 by hinge pin 6-3, and the movable strand barrel 6-2 other end is connected by bearing pin 6-4 is fixing with movable strand rolling stand 6-1.
When carrying out Strand Erection state, movable strand barrel 6-2 is connected with movable strand rolling stand 6-1 by hinge pin 6-3, bearing pin 6-4, forms entirety, can form the strand 2 in erection process and support.After strand 2 has set up, taking out bearing pin 6-4, movable strand barrel 6-2 can rotate around hinge pin 6-3, the release support to strand 2, thus realizes main cable strand and set up in situ.After completing Strand Erection, being rotated by activity strand barrel 6-2 and lift, insertion bearing pin 6-4 sets back and puts, and carries out next root Strand Erection, and repeated work can complete the erection of the whole strand of main push-towing rope.
It addition, the described movable strand cylinder 6 spacing distance on cat road 5 is 9～12m；Between described movable strand cylinder 6 axis and main push-towing rope 3 axis 0.8～1.0 times that distance is main push-towing rope 3 diameter.
In sum, this main rope of suspension bridge PPWS construction strand erection method in situ that the present invention provides needs not move through lifting can make strand be located in design attitude with traversing, there is process links few, the feature that working performance is high, and owing to decreasing, high-altitude is huge proposes Suo Li operation, and working security is greatly improved.
Exemplified as above is only the illustration to the present invention, is not intended that the restriction to protection scope of the present invention, within the every and same or analogous design of the present invention belongs to protection scope of the present invention.
Claims (5)
1. a main rope of suspension bridge PPWS construction strand erection method in situ, it is characterised in that: comprise the steps:
1) in the lower section of main push-towing rope (3), it is parallel to main push-towing rope (3) direction and sets up work high above the ground construction passage cat road (5), cat road (5) two ends are individually fixed on the anchorage (12) at suspension bridge two ends, middle by Sarasota (11) support；
2) erection of the trailer system (1) of main cable strand；Trailer system (1) includes hauling rope (10), pulls device (7) and rack winch (9), hauling rope (10) is installed on the top of main push-towing rope (3), pull device (7) to be fixed on hauling rope (10), rack winch (9) is placed on the anchorage (12) of suspension bridge side, and hauling rope (10) end is connected with rack winch (9)；
3) several movable strand cylinders (6) are set at the upper interval of Mao Dao (5), the axis of this several movable strand cylinder (6) is in same level, and the axis of movable strand cylinder (6) is positioned at the surface of main push-towing rope (3) axis；
4) device (7) that pulls of trailer system (1) is connected with strand (2) one end, strand (2) is placed on movable strand cylinder (6), strand (2) is under the dynamic action of rack winch (9) and the supporting role of movable strand cylinder (6), and strand (2) traction is inserted into predeterminated position；
5) after strand (2) traction is inserted into predeterminated position, the support to strand (2) of each movable strand cylinder (6) is cancelled successively to span centre by Sarasota tower top, strand (2) under gravity, falls within main push-towing rope (3)；
6) when nighttime temperature is stablized, strand (2) is put respectively at Sarasota (11) tower top and anchorage (12) place jack, by strand (2) sag adjustment to designing sag, complete the erection of strand (2)；
7) step 1 is repeated)～6), complete the erection of whole main cable strand.
2. main rope of suspension bridge PPWS construction strand erection method in situ as claimed in claim 1, it is characterised in that: described movable strand cylinder (6) is made up of movable strand rolling stand (6-1), movable strand barrel (6-2), hinge pin (6-3) and bearing pin (6-4)；Movable strand barrel (6-2) one end is flexibly connected with movable strand rolling stand (6-1) by hinge pin (6-3), and movable strand barrel (6-2) other end is connected by bearing pin (6-4) is fixing with movable strand rolling stand (6-1).
3. main rope of suspension bridge PPWS construction strand erection method in situ as claimed in claim 1, it is characterised in that: the described movable strand cylinder (6) spacing distance on Mao Dao (5) is 9～12m.
4. main rope of suspension bridge PPWS construction strand erection method in situ as claimed in claim 1, it is characterised in that: 0.8～1.0 times that distance is main push-towing rope (3) diameter between described movable strand cylinder (6) axis and main push-towing rope (3) axis.
5. main rope of suspension bridge PPWS construction strand erection method in situ as claimed in claim 1, it is characterised in that: described step 6) in nighttime temperature stabilize to strand (2) length direction temperature difference △ T1≤ 2 DEG C, strand (2) section direction temperature difference △ T2≤1℃。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510013329.6A CN104652276B (en) | 2015-01-12 | 2015-01-12 | A kind of main rope of suspension bridge PPWS construction strand erection method in situ |
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| CN201510013329.6A CN104652276B (en) | 2015-01-12 | 2015-01-12 | A kind of main rope of suspension bridge PPWS construction strand erection method in situ |
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| CN104652276B true CN104652276B (en) | 2016-09-14 |
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| CN105442450B (en) * | 2015-11-21 | 2017-11-03 | 江苏法尔胜缆索有限公司 | A kind of preforming strand manufacture method of main rope of suspension bridge and enter saddle method |
| CN105603879B (en) * | 2015-12-29 | 2017-06-23 | 四川石油天然气建设工程有限责任公司 | The construction technology in large-scale pipeline crossing construction cat road |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10237821A (en) * | 1997-02-26 | 1998-09-08 | Ishikawajima Harima Heavy Ind Co Ltd | Device for carrying and installing suspension bridge cable band |
| CN101177931A (en) * | 2007-12-05 | 2008-05-14 | 中铁大桥局股份有限公司 | Erection of gantry type small-cycle traction system on large-span suspension bridge main cable |
| KR20120002742A (en) * | 2010-07-01 | 2012-01-09 | 대림산업 주식회사 | Installing method for catwalk rope in suspension bridge by passing catwalk rope carrier through guide rollers at a pylon in condition of tensile force relaxation in catwalk rope |
| CN102561195A (en) * | 2012-01-05 | 2012-07-11 | 中交第二航务工程局有限公司 | Assembled wire strand bracket |
| CN203546614U (en) * | 2013-10-30 | 2014-04-16 | 中交二航局第四工程有限公司 | Suspension bridge main cable erecting device |
-
2015
- 2015-01-12 CN CN201510013329.6A patent/CN104652276B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10237821A (en) * | 1997-02-26 | 1998-09-08 | Ishikawajima Harima Heavy Ind Co Ltd | Device for carrying and installing suspension bridge cable band |
| CN101177931A (en) * | 2007-12-05 | 2008-05-14 | 中铁大桥局股份有限公司 | Erection of gantry type small-cycle traction system on large-span suspension bridge main cable |
| KR20120002742A (en) * | 2010-07-01 | 2012-01-09 | 대림산업 주식회사 | Installing method for catwalk rope in suspension bridge by passing catwalk rope carrier through guide rollers at a pylon in condition of tensile force relaxation in catwalk rope |
| CN102561195A (en) * | 2012-01-05 | 2012-07-11 | 中交第二航务工程局有限公司 | Assembled wire strand bracket |
| CN203546614U (en) * | 2013-10-30 | 2014-04-16 | 中交二航局第四工程有限公司 | Suspension bridge main cable erecting device |
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Effective date of registration: 20210824 Address after: No.33, Keji 6th Road, Xi'an, Shaanxi 710065 Patentee after: CCCC SECOND HIGHWAY ENGINEERING Co.,Ltd. Patentee after: CCCC HIGHWAY BRIDGES NATIONAL ENGINEERING RESEARCH CENTER Co.,Ltd. Address before: 710068 No. 33, Keji 6th Road, high tech Zone, Xi'an, Shaanxi Patentee before: CCCC SECOND HIGHWAY ENGINEERING Co.,Ltd. |
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