CN101457516B - Multilayer horizontal stay fixing method - Google Patents

Multilayer horizontal stay fixing method Download PDF

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Publication number
CN101457516B
CN101457516B CN2008102463017A CN200810246301A CN101457516B CN 101457516 B CN101457516 B CN 101457516B CN 2008102463017 A CN2008102463017 A CN 2008102463017A CN 200810246301 A CN200810246301 A CN 200810246301A CN 101457516 B CN101457516 B CN 101457516B
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China
Prior art keywords
jump stay
layer
stretch
draw
place
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CN2008102463017A
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CN101457516A (en
Inventor
秦顺全
李军堂
涂满明
毛伟琦
张爱花
周超舟
王东辉
张瑞霞
覃勇刚
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China Railway Major Bridge Engineering Group Co Ltd MBEC
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China Railway Major Bridge Engineering Co Ltd
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Abstract

The invention relates to a hanging method for a multilayer horizontal guy cable, comprising the following steps of: installing a cable placing platform on a beam surface (1) and installing a first layer horizontal guy cable (203A) in place; installing a catwalk (100) used for placing a second layer horizontal guy cable (203B) at the upper end of the first layer horizontal guy cable (203A), and installing the second layer horizontal guy cable (203B) in place, till drawing all the horizontal guy cables in place. The method overcomes the defects such as relatively large force of the horizontal guy cable, high cost, and easy twisting of steel wire bundles and the like in the existing method. The hanging method for a multilayer horizontal guy cable has the advantages of convenient construction, safety, reliability and low cost. Besides, the invention further discloses a special catwalk used for hanging the multilayer horizontal guy cable simultaneously.

Description

The method that hangs of multilayer jump stay
Technical field
The present invention relates to the method that hangs of a kind of multilayer jump stay in the bridge engineering.
Background technology
In big Span Continuous steel braced arch construction, the two cantilever erections of intermediate pier girder steel need adopt multilaminar high strength wire digging line jump stay auxiliary often, with control girder steel stress and amount of deflection.The anchored end of jump stay and stretch-draw end are respectively by the anchor case, carry out bearing pin with the swallow plate that stretches out from the girder steel node and be connected, not needing to adopt tower with suspended cable, auxiliary (if adopt pylon, then expense is higher, general large-scale pylon needs more than 2,000 ten thousand yuan, and medium-sized pylon also needs more than 1,000 ten thousand yuan).
For hanging of multilayer jump stay, usually adopt and hang identical method with suspension cable, promptly on girder steel with the drag-line expansion, after by hoisting machine or loop wheel machine the anchored end of drag-line being in place, by soft traction, hard traction the stretch-draw end anchor head of drag-line is attached the names of pre-determined candidates then, put in place until stretch-draw.This hangs method and generally has following problem: the Suo Li that attaches the names of pre-determined candidates of (1) jump stay is bigger, needs to be provided with long hard traction tension rod, not only stretch-draw difficulty, the cost of drawing tension rod firmly also very big (general every need tens0000 are to hundreds of thousands unit); (2) because each layer rope at the vertical direction coplane, when before back one deck drag-line hangs drag-line being launched, is subjected to preceding one deck influence of the drag-line of stretch-draw, occurs steel tendon easily and beat the strand phenomenon.
Summary of the invention
The objective of the invention is to overcome above-mentioned existing disadvantages of background technology part, and a kind of method that hangs (high tensile steel wire drag-line) of multilayer jump stay is provided.This method easy construction, safe and reliable.
The objective of the invention is to reach: the method that hangs of multilayer jump stay by following measure, it is characterized in that 1. it comprise the steps:. on the beam face, be provided with and put Suo Pingtai, the anchored end of first floor jump stay is in place, by soft traction, hard traction the stretch-draw end anchor head of drag-line is attached the names of pre-determined candidates, and stretch-draw puts in place; 2.. be provided for placing the cat road of second layer jump stay in the upper end of first floor jump stay, second layer jump stay is launched on the cat road, the anchored end of second layer jump stay is in place, and by soft traction, hard traction the stretch-draw end anchor head of second layer jump stay is attached the names of pre-determined candidates, and stretch-draw puts in place; 3.. be provided for placing the cat road of the 3rd layer of jump stay in the upper end of second layer jump stay, the 3rd layer of jump stay launched on the cat road, the anchored end of the 3rd layer of jump stay is in place, and by soft traction, hard traction the stretch-draw end anchor head of the 3rd layer of jump stay is attached the names of pre-determined candidates, and stretch-draw puts in place; 4.. until the whole stretch-draw of all jump stays are put in place.
In technique scheme, described cat road comprises the Hough anchor clamps of fixed level drag-line, the lower end that the Hough anchor clamps are fixed on crossbeam, vertically is fixed with railing at the two ends of crossbeam, is fixed with at the medium position of crossbeam and puts the rope slideway.
In technique scheme, be equipped with gauze wire cloth on the described crossbeam.
In technique scheme, describedly be placed with the lumps of wood at the crossbeam interbody spacer.
In technique scheme, described cat also comprises support on the road, and described support is arranged on the transition position between jump stay and the steel girder cantilever.
The method of hanging of multilayer jump stay of the present invention has following advantage: the method that hangs of abandoning tradition, interim cat road is set on one deck rope before mounted, the Suo Pingtai of putting as back one deck drag-line, reduce the band cap Suo Li of back one deck rope, reduce hanging difficulty, solved the problem that back one deck rope expansion is influenced by preceding one deck rope simultaneously.The method that the hangs easy construction of multilayer jump stay of the present invention, safe and reliable and expense is low.Special-purpose cat road simple in structure, install and use and remove all convenient.
Through calculating: compare with the oblique La Lasuo method of hanging, the inventive method reduces by about 2/3 stretching force, and if the span of steel bridge is big, then the stretching force of Jian Shaoing is bigger.
Description of drawings
The general arrangement that Fig. 1 hangs for multilayer jump stay of the present invention.
The interarea schematic diagram in the special-purpose cat of Fig. 2 the present invention road.
Fig. 3 is the structure vertical view of Fig. 2.
Fig. 4 is the schematic cross-sectional view of Fig. 2.
Fig. 5 is the plane structure schematic diagram (overlooking state) in special-purpose cat road.
Fig. 6 is the jump stay anchored end schematic diagram of attaching the names of pre-determined candidates.
Fig. 7 is the jump stay stretch-draw end schematic diagram of attaching the names of pre-determined candidates.
Fig. 8, Fig. 9, Figure 10 are respectively the block diagram that the multilayer jump stay hangs method.
1. beam faces among the figure, 2, girder steel integral node, 3. rope dish.
100. special-purpose cat road (or claiming the cat road), 101. Hough anchor clamps, 102. put the rope slideway, 102A. limiting plate, 102B. steel roller bearing, 103. crossbeams, 104. lumps of wood, 105. railings, 106. gauze wire cloths, 107. supports.
200. cable systems, 201. anchor casees, 202. swallow plates, 203. jump stays (or claiming drag-line), 204. bearing pin, 205. position bars, 206. nuts, 207. jack, 208. anchor head, 203A. first floor jump stay, 203B. second layer jump stay, the 3rd layer of jump stay of 203C..
300. dynamic traction device.
The specific embodiment
Describe performance of the present invention in detail below in conjunction with accompanying drawing, but they do not constitute limitation of the invention, only do for example.Simultaneously by illustrating that advantage of the present invention will become clear more and understanding easily.
Consult accompanying drawing as can be known: the method that hangs of multilayer jump stay of the present invention, 1. it comprise the steps:. on beam face 1, be provided with and put Suo Pingtai, the anchored end of first floor jump stay 203A is in place, by soft traction with draw firmly and the stretch-draw end anchor head of drag-line attached the names of pre-determined candidates (end of drag-line is an anchored end, the other end is the stretch-draw end), and stretch-draw puts in place; 2.. be provided for placing the cat road 100 of second layer jump stay 203B in the upper end of first floor jump stay 203A, second layer jump stay 203B is launched on cat road 100, the anchored end of second layer jump stay 203B is in place, by soft traction and hard traction the stretch-draw end anchor head of second layer jump stay 203B is attached the names of pre-determined candidates, and stretch-draw puts in place; 3.. be provided for placing the cat road 100 of the 3rd layer of jump stay 203C in the upper end of second layer jump stay 203B, the 3rd layer of jump stay 203C launched on cat road 100, the anchored end of the 3rd layer of jump stay 203C is in place, and by soft traction and hard traction the stretch-draw end anchor head of the 3rd layer of jump stay 203C is attached the names of pre-determined candidates, and stretch-draw puts in place; 4.. until the whole stretch-draw of all jump stays are put in place (as Fig. 1, Fig. 8, Fig. 9, shown in Figure 10).
Need to prove: special-purpose cat road (or claim cat road) uses for the interim drag-line of placing, when water increase drag-line by the Zhang Weicheng jump stay after, the cat road need be removed.In addition: every layer of jump stay generally comprises four drag-lines (but the present invention does not get rid of the drag-line that adopts other radical), have only after four drag-lines are all put in place by stretch-draw, special-purpose cat road could be set thereon, and wherein Shang Duan two drag-lines are by Hough anchor clamps 101 fixing (four drag-lines be square distribution).And wherein the technique for fixing of anchored end and stretch-draw end is a prior art.
Cat road 100 comprises the Hough anchor clamps 101 of fixed level drag-line, the lower end that Hough anchor clamps 101 are fixed on crossbeam 103, vertically is fixed with railing 105 at the two ends of crossbeam 103, is fixed with at the medium position of crossbeam 103 and puts rope slideway 102.The two ends of putting rope slideway 102 vertically are fixed with limiting plate 102A, and middle traverse has steel roller bearing 102B, and is more laborsaving when this structure is put drag-line.Be equipped with gauze wire cloth 106 (making things convenient for the people to walk) on the crossbeam 103 in the above, be placed with the lumps of wood 104 (lumps of wood replaces crossbeam, but weight reduction reduces the span between the crossbeam simultaneously) at crossbeam 103 interbody spacers.Also comprise support 107 on the cat road 100, support 107 is arranged on transition position between jump stay and the steel girder cantilever, and (support 107 is arranged on the transition position between jump stay and the girder steel integral node in other words, as shown in Figure 1).The installation of support can make the placement of drag-line steady, and (as Fig. 2, Fig. 3, Fig. 4, Fig. 5) stablized in stretch-draw.
The Lower Half of putting rope slideway 102 and crossbeam 103 and Hough anchor clamps 101 in cat road 101 and the first half adopt outside bolt is connected, and other all is welded into an integral body.Wherein Hough anchor clamps 101 are two semi-moon shaped group welding pieces, by the top and the bottom bolt jump stay is held tightly, put the rope slideway 102 hyte welding structure that exceeds, its base plate is connected with the crossbeam roof bolt, jump stay 203 can slide putting on the rope slideway, the end face welding of crossbeam 103 bottom surfaces and Hough anchor clamps 101.Support 107 is arranged on the position, upper strata of the stretch-draw end of frame rope, lays gauze wire cloth 106 in cat road total length and promptly forms along the construction passage of adorning jump stay the second layer and identical with the job practices on upper strata.
Cable systems 200 comprises anchor case 201, swallow plate 202, jump stay 203, bearing pin 204, tension rod 205, nut 206, jack 207 and anchor head 208 compositions.Anchor case 201 is a box-girder, be connected by bearing pin 204 with the swallow plate 202 on the girder integral node 2, the anchored end that carries the jump stay 203 of anchor head 208 is worn by the dynamic traction device 300 of this side and is pulled, and 208 of the anchor heads of jump stay 203 are put rope and by jack 207 jump stay band cap are pulled to builder's tonnage (as Fig. 6, shown in Figure 7) by tension rod 205 putting by the dynamic traction device 300 of symmetrical side on the rope slideway 102.
Dynamic traction device 300 is to drag the power set that jump stay 203 penetrates in the anchor case 201 and carries out termination band cap, it can be the special purpose crane that arch is gone up assembly unit girder steel rod member 4, also can adopt the draw-gear of hoist engine and assembly pulley, both all can be used for the extension rope traction of jump stay 203.
Specifically putting the rope process is: after preceding one deck jump stay end face is installed interim cat road 100, the drag-line rope dish 3 of layer to be installed sling be placed near the swallow plate 202, anchored end anchor head 208 is mounted to design attitude, by dynamic traction device 300 jump stay 203 is launched along the rope slideway 102 of putting on the interim cat road 100; By dynamic traction device 300 first tension rod 205 put on nut 206, carry out stretch-draw with 207 pairs of second tension rods 205 of large-tonnage jack then, anchor head 208 is attached the names of pre-determined candidates to design attitude (as Fig. 6, shown in Figure 7).
Calculation and Study shows: preceding one deck drag-line is owing to the increase of the working load in interim cat road, and its Suo Li can increase to some extent, but recruitment is very limited, the operate as normal of one deck drag-line before can not having influence on.
The inventive method, though increased interim cat road expense, but since reduced drag-line band cap Suo Li, shortened hard traction tension rod length, reduced hang difficulty and solved back one deck rope launch to be subjected to before problems such as one deck rope influences, its society and remarkable in economical benefits.

Claims (5)

1. the method that hangs of multilayer jump stay is characterized in that it comprises the steps:
1.. go up to be provided with at beam face (1) and to put Suo Pingtai, the anchored end of first floor jump stay (203A) is in place, by traction the stretch-draw end anchor head of drag-line is attached the names of pre-determined candidates, and stretch-draw puts in place;
2.. be provided for placing the cat road (100) of second layer jump stay (203B) in the upper end of first floor jump stay (203A), second layer jump stay (203B) is gone up expansion at Mao Dao (100), the anchored end of second layer jump stay (203B) is in place, and by traction the stretch-draw end anchor head of second layer jump stay (203B) is attached the names of pre-determined candidates, and stretch-draw puts in place;
3.. be provided for placing the cat road of the 3rd layer of jump stay (203C) in the upper end of second layer jump stay (203B), the 3rd layer of jump stay (203C) gone up expansion at Mao Dao (100), the anchored end of the 3rd layer of jump stay (203C) is in place, and by traction the stretch-draw end anchor head of the 3rd layer of jump stay (203C) is attached the names of pre-determined candidates, and stretch-draw puts in place;
4.. until the whole stretch-draw of all jump stays are put in place.
2. the method that hangs of multilayer jump stay according to claim 1, it is characterized in that described cat road (100) comprises the Hough anchor clamps (101) of fixed level drag-line, the lower end that Hough anchor clamps (101) are fixed on crossbeam (103), vertically be fixed with railing (105) at the two ends of crossbeam (103), be fixed with at the medium position of crossbeam (103) and put rope slideway (102).
3. the method that hangs of multilayer jump stay according to claim 2 is characterized in that being equipped with on the described crossbeam (103) gauze wire cloth (106).
4. the method that hangs of multilayer jump stay according to claim 2 is characterized in that being placed with the lumps of wood (104) at described crossbeam (103) interbody spacer.
5. the method that hangs of multilayer jump stay according to claim 2 is characterized in that also comprising support (107) on the described cat road that described support (107) is arranged on the transition position between jump stay and the steel girder cantilever.
CN2008102463017A 2008-12-30 2008-12-30 Multilayer horizontal stay fixing method Active CN101457516B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2008102463017A CN101457516B (en) 2008-12-30 2008-12-30 Multilayer horizontal stay fixing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2008102463017A CN101457516B (en) 2008-12-30 2008-12-30 Multilayer horizontal stay fixing method

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CN201010147694A Division CN101798798A (en) 2008-12-30 2008-12-30 Special catwalk hung with multilayer horizontal inhaul cables

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CN101457516A CN101457516A (en) 2009-06-17
CN101457516B true CN101457516B (en) 2010-10-06

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102031754B (en) * 2009-09-29 2013-01-02 上海浦江缆索股份有限公司 Intelligent horizontal cable releasing method
CN105971266B (en) * 2016-07-01 2018-02-09 南京市第九建筑安装工程有限公司 A kind of self-anchored type adjustable pedal for setting up high-altitude cat road

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Effective date of registration: 20150205

Address after: 430050 Hanyang Road, Hanyang District, Hubei, No. 38, No.

Patentee after: Group Co., Ltd., Zhongtie Daqiao Bureau

Address before: 430050 No. 38, Hanyang Avenue, Wuhan, Hubei

Patentee before: China Zhongtie Major Bridge Engineering Co., Ltd.

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Owner name: GROUP CO., LTD., ZHONGTIE DAQIAO BUREAU

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