CN105401523B - Hanging mounting method of long heavy stay cable under space limited condition - Google Patents

Hanging mounting method of long heavy stay cable under space limited condition Download PDF

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Publication number
CN105401523B
CN105401523B CN201510646387.2A CN201510646387A CN105401523B CN 105401523 B CN105401523 B CN 105401523B CN 201510646387 A CN201510646387 A CN 201510646387A CN 105401523 B CN105401523 B CN 105401523B
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CN
China
Prior art keywords
tower
cable
suspension cable
anchor cup
suspension
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CN201510646387.2A
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Chinese (zh)
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CN105401523A (en
Inventor
周文
冯朝军
王保
张志勇
刘中东
贺清华
缪晨辉
李海泉
朱能建
Original Assignee
中铁港航局集团有限公司
中铁港航局集团有限公司桥梁分公司
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Priority to CN201510646387.2A priority Critical patent/CN105401523B/en
Publication of CN105401523A publication Critical patent/CN105401523A/en
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/16Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables

Abstract

The invention discloses a hanging mounting method of a long heavy stay cable under a space limited condition. The hanging mounting method comprises mounting of a first stay cable body on the center span side of a cable tower and a second stay cable body on the side span side of the cable tower and comprises the following steps of S10, tower end mounting of the first stay cable body; S20, beam end mounting of the first stay cable body; S30, tower end hard traction of the first stay cable body; S40, tower end mounting of the second stay cable body; S50, beam end mounting of the second stay cable body; and S60, synchronous different-place tensioning. A tower-first beam-second hanging manner is adopted in the stay cable bodies on the center span side and the side span side for hanging, and the problems that in the beam-tower end hanging scheme of the long heavy stay cable, during rear-tower-end hanging, traction force is too large, and safety is poor are solved. Meanwhile, beam end and tower end synchronous different-place tensioning is adopted, the problems that upper tower column space is small and narrow, and construction is difficult are solved, the phenomenon that when the stay cable bodies are tensioned each time, a set of tensioning extending rods are cut to be wasted is avoided, material waste is reduced, and the construction cost is reduced.

Description

A kind of long weight suspension cable under the conditions of limited space hangs installation method

Technical field

The present invention is used for technical field of bridge construction, and the long weight suspension cable under the conditions of more particularly to a kind of limited space is hung If installation method.

Background technology

The structural elements for bearing pulling force in cable-stayed bridge and mainly supporting as girder, exists as suspension cable two ends hang construction Sky, near water is faced in high-altitude, and its difficulty of construction is big, and installation method and technological requirement are advanced, and its work progress safety assurance is particularly weighed Will.

The conventional hanging cable mode of suspension cable has two kinds of " the first tower back rest hangs " and " tower hangs after first beam ".

First, conventional suspension cable " tower hangs after first beam " scheme:Suspension cable transport to after scene, Jing tower cranes or crane barge or ground Face large-scale crane is lifted to bridge floor and opens up rope disk, opens up rope through bridge floor, using beam face automobile loop wheel machine in suspension cable beam-ends anchor head anchor cup It is interior that hard draw bar is installed, anchor head and hard tension rod are put in cable guide pipe obliquely with automobile loop wheel machine, are snapped down to hard tension rod and exist Anchor plate tyre cap, beam face automobile loop wheel machine install hard draw bar in the anchor cup of oblique tensile tower end, then install in hard draw bar front end Soft trailer system, tower top hoist engine and tower crane etc. coordinate the soft trailer system front end of lifting inclined guyed tower end of cable, continue soft traction system System front end is drawn to cable guide pipe, enters cable guide pipe after adjustment, and soft trailer system front end is drawn very heavy to the anchor plate of tower end Behind top, the work anchorage on soft trailer system steel strand wires is installed after jack, soft traction is carried out, continuing traction after adjustment makes tiltedly Steel for wire drawing is all carried out in cable guide pipe, and continuing traction makes hard tension rod expose tower end anchor plate, takes anchor ring, is proceeded hard Draw to certain safe distance, in the symmetrical grading tension suspension cable of tower top.

2nd, conventional suspension cable " the first tower back rest hangs " scheme:Suspension cable transport to after scene, Jing tower cranes or crane barge or ground Face large-scale crane is lifted to bridge floor and opens up rope disk, opens up rope through bridge floor, and tower top hoist engine and tower crane etc. coordinate lifting inclined guyed tower end of cable Anchor cup, carries out drawing into tower end cable guide pipe band cap and installs, and lower end is drawn to cable guide pipe using steel wire rope of windlass, installs soft leading Soft traction being carried out after drawing system, anchor head adjustment angle being lifted using automobile loop wheel machine, continuing traction makes anchor head all carry out cable guide pipe In, continuing traction makes anchor head expose the anchor plate under beam, takes anchor ring, installs hard tension rod, is drawn firmly certain distance, The symmetrical grading tension suspension cable of tower top.

The shortcoming of prior art:

First, conventional suspension cable " tower hangs after first beam " scheme shortcoming:

(1), long weight suspension cable adopt " tower hangs after first beam " scheme, if Suo Yuechang, draw using when " tower hangs afterwards " Power is bigger, constructs more dangerous, and the situation of steel strand wires unbalance stress occurs in the soft traction in tower end, can be first when serious After rupture, make the suspension cable Steel Bridge Deck that rebounds cause security incident.

(2), with cable-stayed bridge span it is increasing, suspension cable diameter is increasing, Sarasota hanging cable length and height also get over Come bigger, pull strength is also increasing when causing tower end to hang, easily occur being pulled up that power is inadequate to ask using conventional equipment Topic(Want to obtain bigger lifting traction force, then to the tonnage demand of tower top hoist engine also more and more higher).

(3), long weight oblique tensile tower end hang, easily there is the inadequate problem in soft draw operations space, and specially design, make The soft pulling equipment for matching is made, necessarily causes construction cost input to greatly increase;If by routine soft pulling equipment scene repeatedly The transformation of the way is processed, tedious process delays the duration, and Jing often changes a social system processing, equipment itself is necessarily caused to damage, so as to increase Construction safety risk.

(4), long weight suspension cable rope is opened up using bridge floor, if exhibition rope is not exclusively, when soft traction tensioning is carried out, rope is realized Existing back twist is rotated, and drives the steel strand wires of the soft Traction sysytem in tower end together to rotate, and the tension ground tackle of steel strand wires rear end is arranged on and opens Draw jack rear end and top pressure occurs frictional force on jack, between the two, so as to limit the rotation of tension steel strand, because This may make tension steel strand twist off damage, security incident occur.

(5), conventional inclined guy cable stretching construction be symmetrically to carry out in Sarasota interior room, for long weight inclined guy cable stretching, easily There is the constructional difficulties problem that upper king-post strut narrow space, tension rod intersect, if cutting off the tension rod of conflict during tensioning by several times, often Useless one group of tensioning extension rod is all cut during secondary inclined guy cable stretching, necessarily causes the waste of lot of materials, construction cost input to increase greatly Plus.

2nd, conventional suspension cable " the first tower back rest hangs " scheme shortcoming:

(1), with cable-stayed bridge span it is increasing, suspension cable diameter is increasing, Sarasota hanging cable length and height also get over Come bigger, pull strength is also increasing when causing tower end to hang, easily occur being pulled up that power is inadequate to ask using conventional equipment Topic(Want to obtain bigger lifting traction force, then to the tonnage demand of tower top hoist engine also more and more higher).

(2), long weight hanging at end of staying cable beam, in steel box-girder tuyere, space is little, and soft draw operations space not enough, and specially sets The soft pulling equipment that meter, manufacture match, necessarily causes construction cost input to greatly increase;If will conventional soft pulling equipment scene Processing and remodelling is repeated, tedious process delays the duration, and Jing often changes a social system processing, equipment itself is necessarily caused to damage, so as to Increased construction safety risk.

(3), long weight suspension cable rope is opened up using bridge floor, if exhibition rope is not exclusively, when soft traction tensioning is carried out, rope is realized Existing back twist is rotated, and drives the steel strand wires of the soft Traction sysytem in tower end together to rotate, and the tension ground tackle of steel strand wires rear end is arranged on and opens Draw jack rear end and top pressure occurs frictional force on jack, between the two, so as to limit the rotation of tension steel strand, because This may make tension steel strand twist off damage, security incident occur.

(4), conventional inclined guy cable stretching construction be symmetrically to carry out in Sarasota interior room, as beam-ends gradually increases away from Sarasota distance Greatly, suspension cable is less and less with horizontal plane angle(It is oblique by abrupt change), tensioning during construction extends rod rear end and can intersect, oblique for long weight Cable tension, it may appear that the constructional difficulties problem that upper king-post strut narrow space, tension rod intersect, if cut off conflict by several times during tensioning Tension rod, then all cut useless one group of tensioning extension rod during each inclined guy cable stretching, necessarily cause the waste of lot of materials, construction cost Input is greatly increased.

The content of the invention

In order to solve the inadequate problem of bridge floor space exhibition rope of long weight suspension cable, it is to avoid long weight suspension cable " tower hangs after first beam " The big and unsafe problem of Dipeptiven is drawn in scheme when " tower end hangs afterwards ", in order to solve in " the first tower back rest hangs " scheme The inadequate problem of the soft pull-up space of " beam-ends hangs afterwards " steel box-girder beam-ends, in order to solve cable body during the soft traction tensioning of long weight suspension cable There is the problem of steel strand wires fracture damage and applies to solve upper king-post strut narrow space during suspension cable synchronous symmetrical tensioning in torsion The difficult problem of work, the long weight suspension cable under the conditions of a kind of limited space of present invention offer hang installation method.

The technical solution adopted for the present invention to solve the technical problems is:A kind of long weight suspension cable under the conditions of limited space Hang installation method, including in Sarasota across side the first suspension cable and Sarasota end bay side the second suspension cable installation, Comprise the following steps:

S10. the tower end of the first suspension cable is installed:First tension rod is set on the tower end anchor cup of the first suspension cable, upwards The first suspension cable is drawn, the first tension rod is entered and is passed across the corresponding tower end cable guide pipe in side in Sarasota, install hard in tower Traction tensioning equipment, and the first secondary nut is tightened on the first tension rod;

S20. the beam-ends of the first suspension cable is installed:The first suspension cable of across direction traction in, makes the beam-ends of the first suspension cable Anchor cup enters corresponding beam-ends cable guide pipe, draws beam-ends anchor cup along beam-ends cable guide pipe, arrives when beam-ends anchor cup passes beam-ends cable guide pipe The second nut is tightened after design attitude;

S30. the tower end of the first suspension cable is drawn firmly:Tensioning equipment tower end across side along Sarasota is drawn by hard in tower Cable guide pipe draws the first suspension cable, while tighten the first secondary nut, the first suspension cable is stretched out after the cable guide pipe of tower end in tower end anchor cup On tighten the first nut, until tower end anchor cup wears flat button;

S40. the tower end of the second suspension cable is installed:The second suspension cable is pulled up, enters the tower end anchor cup of the second suspension cable Enter the corresponding tower end cable guide pipe in Sarasota end bay side, tower end cable guide pipe is passed to design attitude in the tower end anchor cup of the second suspension cable After tighten the 3rd nut;

S50. the beam-ends of the second suspension cable is installed:On the beam-ends anchor cup of the second suspension cable, the second tension rod, Xiang Bian are set The second suspension cable of across direction traction, makes the second tension rod enter corresponding beam-ends cable guide pipe, passes beam-ends rope in the second tension rod After conduit, the second secondary nut on the second tension rod, is tightened, hard traction tensioning equipment under end bay beams of concrete is installed, it is mixed by end bay Under solidifying Tu Liang, hard traction tensioning equipment draws the second suspension cable along beam-ends cable guide pipe, while tightening the second secondary nut, the second oblique pull Rope tightens the 4th nut after stretching out beam-ends cable guide pipe on beam-ends anchor cup, until beam-ends anchor cup wears flat button;

S60. synchronous strange land tensioning:Set by hard traction tensioning under hard traction tensioning equipment in tower and end bay beams of concrete Standby, synchronous symmetrically the first suspension cable of tensioning and the second suspension cable, until tensioning is completed.

The improvement of technical solution of the present invention is further used as, before step S10, also includes that the first suspension cable of step S05. opens up rope: Cable tray is arranged in below Sarasota, the first suspension cable lifting of rolling is placed on cable tray, and is ensured the first suspension cable Beam-ends anchor cup one faces up placement, beam-ends anchor cup is pulled out and is placed on anchor head dolly, by anchor head dolly to away from Sarasota side To girder front end traction carry out exhibition rope, between the first suspension cable and girder bridge floor be spaced 2m~3m place one put rope dolly, And putting place mat rubber peel on rope dolly, stop traction when anchor head dolly is drawn to girder front end, by above cable tray still Cable tray is placed back in after not deployed first suspension cable lifting upset in the air, so that the tower end anchor cup one of the first suspension cable Face up placement, is opened up rope construction in the air, first fills the first tension rod of first segment in the tower end anchor cup of the first suspension cable, is installed The pull rope of tower top hoist engine from inside upper Sarasota through in Sarasota after the corresponding tower end cable guide pipe in side, with first segment first Tension rod front end is connected, and utilizes tower top hoist engine and Sarasota construction tower crane to coordinate traction tower end anchor cup slow upwards during aerial exhibition rope It is mobile, promote cable tray to rotate while cooperation is artificial, until stopping when also surplus 2 circle of the first suspension cable does not launch on cable tray oblique Drag-line is lifted, and last 2 the first suspension cable of circle is opened up rope auxiliary in the air using bridge floor automobile loop wheel machine, is having been detached from cable tray One suspension centre is separately set on the first suspension cable, the suspension centre is connected using bridge floor automobile loop wheel machine and is lifted the first suspension cable, until Last 2 the first suspension cables of circle are slowly lifted into disengaging cable tray, cable tray is removed, then slowly loose hook falls bridge floor automobile loop wheel machine Bridge floor is returned, suspension centre is removed, tower top hoist engine and Sarasota construction tower crane cooperation continue up lifting tower end anchor cup, complete the first oblique pull Rope opens up rope.

The improvement of technical solution of the present invention is further used as, in step S10, after the completion of the first suspension cable exhibition rope, tower top volume Raise machine and cooperate with Sarasota construction tower crane and continue slowly to be pulled up by tower end anchor cup, while bridge floor hoist engine is utilized first Arrange soft towing point auxiliary to draw the first suspension cable launched to girder front end to Sarasota direction on suspension cable, when tower top elevator Machine and Sarasota construct the total lifting force upwards of tower crane not enough, and tower end anchor cup in the first tension rod of first segment it is secondary without band first Before nut, bridge floor automobile loop wheel machine is recycled soft suspension centre cooperation to be set together while being lifted up on the first suspension cable, until The first tension rod of first segment enters across side tower end cable guide pipe in Sarasota, loads onto the first secondary nut in the first tension rod of first segment, Tower top hoist engine, Sarasota construction tower crane and bridge floor automobile loop wheel machine is released, second section the is installed in the first tension rod of first segment afterbody One tension rod, is installed hard traction tensioning equipment in tower, is transferred the first tension rod of second section using hard traction tensioning equipment in tower, The first secondary nut is tightened on the first tension rod of second section.

The improvement of technical solution of the present invention is further used as, in step S20, across direction front end arranges 1 cunning in girder Car group, in the first suspension cable beam-ends, across direction front portion arranges soft towing point, sets and hang another 1 tackle pulley, bridge floor on soft towing point Steel wire rope of windlass is fastened on the soft towing point of the first suspension cable after 2 tackle pulleys, is started bridge floor hoist engine and is dragged first Suspension cable, treats that beam-ends anchor cup stops to 2~3m positions before corresponding beam-ends cable guide pipe, pacifies in the first suspension cable beam-ends anchor cup Dress adapter, installs steel strand wires on adapter, and steel strand wires front end is penetrated beam-ends cable guide pipe, and bridge floor hoist engine is used in continuation Traction, and beam-ends anchor cup angle is adjusted with bridge floor automobile loop wheel machine, until beam-ends anchor cup fully enters beam-ends cable guide pipe, bridge floor elevator Machine travel to steel strand wires stop after passing beam-ends cable guide pipe, install soft traction tensioning equipment in mid-span steel girder, using mid-span steel girder Interior soft traction tensioning equipment draws the first suspension cable by steel strand wires, when beam-ends anchor cup exposes beam-ends cable guide pipe, screws installation Second nut, continues traction, while continue to screw the second nut, until beam-ends anchor cup is drawn to design attitude.

The improvement of technical solution of the present invention is further used as, in step S30, starts in tower hard traction tensioning equipment tensioning the One suspension cable, during tensioning, by the first secondary nut screwing clamping, the first suspension cable tightens the on the anchor cup of tower end after stretching out tower end cable guide pipe One nut, removes the first tension rod of second section therebetween, last until tower end anchor cup wears flat button.

The improvement of technical solution of the present invention is further used as, between step S30, S40, includes the second suspension cable exhibition of step S35. Rope:Second suspension cable is directly being held in place on the cable tray of end bay after bridge in the lifting of end bay position, by the second suspension cable Tower end anchor cup is installed on anchor head dolly, and drawing anchor head dolly to below Sarasota carries out bridge floor exhibition rope, during opening up rope, second 2m~3m is spaced between suspension cable and girder bridge floor places one put rope dolly, and putting place mat rubber peel on rope dolly, when Tower end anchor cup is drawn to below Sarasota when hanging position and stops traction, and the tower end for proceeding by the second suspension cable is installed.

The improvement of technical solution of the present invention is further used as, in step S40, is screwed in the tower end anchor cup of the second suspension cable Towing plate is installed, the pull rope for installing tower top hoist engine passes through the corresponding tower end cable guide pipe in Sarasota end bay side from inside upper Sarasota Afterwards, it is connected with installation towing plate, while tower crane suspension centre is set with soft suspender belt on the second suspension cable, using tower top hoist engine and rope Tower construction tower crane coordinates carries out being lifted up for the second suspension cable;Meanwhile, continued using the second suspension cable of bridge floor elevator machine travel Bridge floor exhibition rope, after remaining second suspension cable on cable tray all launches on bridge floor, now tower top are carried out across direction in Second suspension cable is promoted in the air by hoist engine and Sarasota construction tower crane cooperation, and bridge floor hoist engine continues the remaining cable body of traction Move to Sarasota direction, synchronously carry out tower end anchor cup and lifted, when the lifting upwards total with Sarasota construction tower crane of tower top hoist engine Power not enough, and the second oblique tensile tower end anchor cup without the 3rd nut of band before, recycle bridge floor automobile loop wheel machine in the second suspension cable It is upper that soft suspension centre cooperation is set together while being lifted up, until the second oblique tensile tower end anchor cup traction passes Sarasota end bay side pair The tower end cable guide pipe answered tightens the 3rd nut to after design attitude.

The improvement of technical solution of the present invention is further used as, in step S50, is arranged on the beam-ends anchor cup of the second suspension cable The second tension rod of first segment, arranges soft distracted position in second suspension cable beam-ends anchor cup one end, and hangs 1 tackle pulley, right The beam-ends cable guide pipe answered hangs another 1 tackle pulley away from the side of Sarasota, bridge floor steel wire rope of windlass after 2 tackle pulleys, Fasten in the soft distracted position of the second suspension cable, start bridge floor hoist engine and drag the second suspension cable, treat beam-ends anchor cup to corresponding Before beam-ends cable guide pipe, 2~3m positions stop, and install adapter in the second tensioning of first segment rod rear end, pacify on adapter Steel strand wires front end is penetrated beam-ends cable guide pipe by steel loading twisted wire, is continued to use bridge floor elevator machine travel, and is adjusted with bridge floor automobile loop wheel machine The angle of the second tension rod of first segment and beam-ends anchor cup, until the second tension rod of first segment and beam-ends anchor cup fully enter beam-ends rope Conduit, continues, with bridge floor elevator machine travel, to stop after steel strand wires pass beam-ends cable guide pipe, and bridge floor elevator machine travel stops, peace Soft traction tensioning equipment under rim span concrete beam, is drawn by steel strand wires using soft traction tensioning equipment under end bay beams of concrete Second suspension cable, when the second tension rod of first segment exposes beam-ends cable guide pipe, screws the second secondary nut of installation, continues traction, together Shi Jixu screws the second secondary nut until the second secondary nut of the second tension rod of first segment wears flat button.

The improvement of technical solution of the present invention is further used as, after the second secondary nut of the second tension rod of first segment wears flat button, is torn open Soft traction tensioning equipment under flash trimming span concrete beam, connects the second tension rod of second section after the second tension rod of first segment, installs Hard traction tensioning equipment under end bay beams of concrete, is drawn along beam-ends cable guide pipe by hard traction tensioning equipment under end bay beams of concrete Second suspension cable, the second suspension cable tighten the 4th nut after stretching out beam-ends cable guide pipe on beam-ends anchor cup, until beam-ends anchor cup is worn Flat button.

Beneficial effects of the present invention:Suspension cable in the present invention across side and end bay once adopts " first tower back rest extension If " mode hangs, when after solving in long weight suspension cable " tower end hangs after first beam " scheme, tower end hangs, traction Dipeptiven is big, uneasy Full problem.Simultaneously as the layer between steel anchor beam is away from little, narrow space in Sarasota, in across side and end bay once suspension cable Less with the angle of cut of horizontal plane, in tower end stretching construction, tensioning rod rear end can intersect, and in tower, space cannot meet both sides The synchronous symmetrical tensioning suspension cable of jacking equipment, constructional difficulties, the present invention take beam-ends and the synchronization strange land tensioning of tower end, can To solve upper king-post strut narrow space, the problem of constructional difficulties, it is to avoid all cut useless one group of tensioning extension rod during inclined guy cable stretching every time, The waste of material is reduced, construction cost is reduced.

Description of the drawings

The invention will be further described below in conjunction with the accompanying drawings:

Fig. 1 draws beam-ends anchor cup schematic diagram when being the first suspension cable exhibition rope of the invention;

Remainder cable body schematic diagram on cable tray when Fig. 2 is the first suspension cable exhibition rope of the invention;

After residue cable body stands up when Fig. 3 is the first suspension cable exhibition rope of the invention, prepare aerial exhibition rope schematic diagram;

Fig. 4 is the first oblique tensile tower end scheme of installation of the invention;

Fig. 5 is that the first suspension cable beam-ends installation jackshaft roll of the invention raises machine travel schematic diagram;

Fig. 6 is the first suspension cable beam-ends scheme of installation of the invention;

Fig. 7 is the second suspension cable exhibition rope schematic diagram of the invention;

Fig. 8 is the second oblique tensile tower end scheme of installation of the invention;

Fig. 9 is the second suspension cable synchronization strange land tensioning schematic diagram of the invention.

Specific embodiment

Referring to figs. 1 to Fig. 9, the concrete structure of the preferred embodiments of the invention is that show.Will be detailed below this Invent the construction featuress of each element, and if being described to during direction (upper and lower, left and right, before and after), be with shown in Fig. 9 Structure is to refer to description, but the actually used direction of the present invention is not limited thereto.

The invention provides the long weight suspension cable under the conditions of a kind of limited space hangs installation method, including in Sarasota 2 across The installation of the second suspension cable 14 of the 2 end bay side of the first suspension cable 3 and Sarasota of side, comprises the following steps:

S05. the first suspension cable 3 opens up rope:Cable tray 1 is arranged in below Sarasota 2, the first suspension cable 3 of rolling is lifted It is placed on cable tray 1, and ensures that the beam-ends anchor cup one of the first suspension cable 3 faces up placement, beam-ends anchor cup is pulled out and is placed in On anchor head dolly 4, anchor head dolly 4 is carried out into exhibition rope, the first suspension cable 3 and master to 5 front end of the girder traction away from 2 direction of Sarasota 2m~3m placements one are spaced between 5 bridge floor of beam and put rope dolly 6, and putting place mat rubber peel on rope dolly 6, when anchor head dolly 4 stop traction when being drawn to 5 front end of girder, and now cable tray 1 there remains part cable body above, and cable tray 1 is not yet opened up above The first suspension cable 3 opened is lifted by crane and places back in cable tray 1 after overturning in the air, so that the tower end anchor cup one of the first suspension cable 3 Face up placement, is opened up rope construction in the air, first fills the first tension rod of first segment in the tower end anchor cup of the first suspension cable 3, is pacified The pull rope of dress tower top hoist engine 7 from inside upper Sarasota through in Sarasota after the corresponding tower end cable guide pipe in side 8, with first segment First tension rod front end is connected, and utilizes tower top hoist engine 7 and Sarasota construction tower crane 9 to coordinate traction tower end anchor cup to delay during aerial exhibition rope Slowly move up, while coordinate artificial promotion cable tray 1 to rotate, until first suspension cable 3 also remains 2 circles without exhibition on cable tray 1 Stop suspension cable being lifted when opening, last 2 the first suspension cable 3 of circle is opened up rope auxiliary in the air using bridge floor automobile loop wheel machine 10, Jing departs from and separately arrange a suspension centre on the first suspension cable 3 of cable tray 1, connects the suspension centre using bridge floor automobile loop wheel machine 10 and carries The first suspension cable 3 is risen, until 3 slow lifting of last 2 the first suspension cable of circle is departed from cable tray 1, cable tray 1 is removed, then Slowly loose hook drops back into bridge floor to bridge floor automobile loop wheel machine 10, and bridge floor arranges large area geotextiles below the cable body, prevents the first suspension cable 3 With beam face contact damage, suspension centre is removed, tower top hoist engine 7 and the Sarasota construction cooperation of tower crane 9 continue up lifting tower end anchor cup, complete Rope is opened up into the first suspension cable 3;So far, all exhibition rope is completed the first suspension cable 3, and tower top hoist engine 7 and Sarasota construction tower crane 9 coordinate Continuing up lifting carries out the installation of tower end;

S10. the tower end of the first suspension cable 3 is installed:After the completion of the exhibition rope of first suspension cable 3, tower top hoist engine 7 is constructed with Sarasota Tower crane 9 cooperates and continues slowly to be pulled up by tower end anchor cup, while being arranged on the first suspension cable 3 using bridge floor hoist engine The first suspension cable 3 launched to 5 front end of girder is drawn by soft towing point auxiliary to 2 direction of Sarasota, notes 7 rope closing of tower top hoist engine Speed and Sarasota construction tower crane 9 lifted and the speeds match of bridge floor hoist engine is good, to eliminate Sarasota construction 9 suspension centre water of tower crane Flat card traction safety of trying hard to keep, when tower top hoist engine 7 and Sarasota construct the total lifting force upwards of tower crane 9 not enough, and tower end anchor cup Before the first tension rod of interior first segment is without the first secondary nut of band, bridge floor automobile loop wheel machine 10 is recycled to set on the first suspension cable 3 Soft suspension centre cooperation is put together while being lifted up, until the first tension rod of first segment enters across side tower end cable guide pipe 8 in Sarasota, The first secondary nut is loaded onto in the first tension rod of first segment, tower top hoist engine 7, Sarasota construction tower crane 9 and bridge floor automobile loop wheel machine is released 10, screw in the female thread of first segment the first tension rod afterbody and the first tension rod of second section is installed, hard traction tensioning in tower is installed The first tension rod of second section is transferred a segment distance to mitigate the first suspension cable by equipment 11 using hard traction tensioning equipment 11 in tower 3 bridge floor hoist engines when beam-ends is installed and the pull strength of soft traction, tighten the first secondary nut on the first tension rod of second section;

S20. the beam-ends of the first suspension cable 3 is installed:In girder 5, across direction front end arranges 1 tackle pulley, the first suspension cable In 3 beam-ends, across direction front portion arranges soft towing point, sets and hang another 1 tackle pulley, 12 steel wire rope of bridge floor hoist engine on soft towing point After 2 tackle pulleys, fasten on the soft towing point of the first suspension cable 3, start bridge floor hoist engine 12 and drag the first suspension cable 3, Treat that above 2~3m positions stop beam-ends anchor cup to corresponding beam-ends cable guide pipe 13, install in 3 beam-ends anchor cup of the first suspension cable and turn Changing-over head, installs steel strand wires on adapter, and steel strand wires front end is penetrated beam-ends cable guide pipe 13, continues with bridge floor hoist engine 12 Traction, and with more than 10 adjustment beam-ends anchor cup angle of bridge floor automobile loop wheel machine, until beam-ends anchor cup fully enters beam-ends cable guide pipe 13, Bridge floor hoist engine 12 draws to steel strand wires to pass and stop after beam-ends cable guide pipe 13, passes length and meets soft in installation mid-span steel girder leading Draw tensioning equipment Len req.When beam-ends anchor cup enter beam-ends cable guide pipe 13 when, using bridge floor automobile loop wheel machine 10 lifted cable body come Step up the inclination angle of beam-ends anchor cup so as to consistent with 13 axis of beam-ends cable guide pipe, this process commands the first suspension cable 3 by special messenger The speed of lifting, prevents that beam-ends anchor cup screw thread is damaged.When beam-ends anchor cup fully enters beam-ends cable guide pipe 13, in beam-ends pipe conduit Rubber peel or gunny is laid in 13 lower ports, prevents that traction the first suspension cable of later stage 3 is direct with 13 lower port of beam-ends cable guide pipe Contact causes to damage.As main span side steel box-girder beam-ends suspension cable is anchored in tuyere, narrow space, soft draw operations space is not It is enough, in steel box-girder processing and manufacturing, zone position is drawn on the tuyere base plate of steel box-girder both sides in advance and preformed hole is set, treat oblique pull After rope is installed, then arrange professional electric welder that preformed hole is welded complete.Soft traction tensioning equipment in mid-span steel girder is installed, in In girder steel, soft traction tensioning equipment includes tensioning spike, back-twist device, jack and instrument anchorage, using soft in mid-span steel girder Traction tensioning equipment draws the first suspension cable 3 by steel strand wires, first by many steel strand wires according to steel strand wires before soft traction starts On length mark be tuned into isometric, available artificial when adjusting long or 270kN jack are carried out, and are started soft opening and are drawn system and carry out soft leading Draw, when beam-ends anchor cup exposes 60~70mm of anchor plate, screw the second nut of installation, to ensure later stage traction safety, continue soft Traction, while continue to screw the second nut, until beam-ends anchor cup is drawn to design attitude tightens the second nut;Across steel in dismounting Soft traction tensioning equipment in beam, check steel strand surface damage situations, depending on damage situations degree come decide whether change steel Twisted wire, in order to the safety traction of next skew cables;

S30. the tower end of the first suspension cable 3 is drawn firmly:The soft traction of beam-ends carries out tower end in place afterwards and draws firmly, by hard in tower Traction tensioning equipment 11 draws the first suspension cable 3 across the tower end cable guide pipe 8 of side along Sarasota, during tensioning, by the first secondary nut Tighten, the first suspension cable tightens the first nut after stretching out tower end cable guide pipe on the anchor cup of tower end, remove second section first therebetween Pull bar, it is last until tower end anchor cup wears flat button(That is twist concordant with tower end anchor cup outer end in the first nut outer end), then it is oblique to carry out first 3 tower end pulling preparation of drag-line;

S35. the second suspension cable 14 opens up rope:Second suspension cable 14 is directly being held in place side after bridge in the lifting of end bay position Across cable tray 1 on, the tower end anchor cup of the second suspension cable 14 is installed on anchor head dolly 4 using bridge floor automobile loop wheel machine 10, rope Bridge floor steel wire rope of windlass below tower 2 is released and is connected with anchor head dolly 4, is started bridge floor hoist engine and is drawn anchor to below Sarasota 2 During head dolly 4 carries out bridge floor exhibition rope, exhibition rope, 2m~3m is spaced between 5 bridge floor of the second suspension cable 14 and girder and places one Platform puts rope dolly 6, and is putting place mat rubber peel on rope dolly 6, prevents cable body from contacting with beam face and causes to damage, when tower end anchor cup It is drawn to below Sarasota 2 when hanging position and stops traction, the tower end for proceeding by the second suspension cable 14 is installed;

S40. the tower end of the second suspension cable 14 is installed:Screw in the tower end anchor cup of the second suspension cable 14 and towing plate be installed, The pull rope of tower top hoist engine 7 is installed from inside upper Sarasota through after the corresponding tower end cable guide pipe in Sarasota end bay side 15, with peace Dress towing plate is connected, while arranging tower crane suspension centre with soft suspender belt on the second suspension cable 14, is applied using tower top hoist engine 7 and Sarasota Work tower crane 9 coordinates carries out being lifted up for the second suspension cable 14;Meanwhile, continued using the second suspension cable of bridge floor elevator machine travel 14 Bridge floor exhibition rope is carried out across direction in, the second suspension cable of bridge floor elevator machine travel 14 carries out using using on cable body during bridge floor exhibition rope Special soft hanging belt binding, slowly draws exhibition rope to Sarasota direction, and the speed and Sarasota for noting bridge floor hoist engine rope closing is constructed The speeds match that tower crane 9 is lifted is good;After remaining second suspension cable 14 on cable tray 1 all launches on bridge floor, now tower Top hoist engine 7 and Sarasota construction tower crane 9 coordinate and are promoted in the air the second suspension cable 14, and it is surplus that bridge floor hoist engine continues traction Remaining cable body is moved to 2 direction of Sarasota, is synchronously carried out tower end anchor cup and is lifted, when tower top hoist engine 7 and Sarasota construct tower crane 9 it is total to On lifting force not enough, and 14 tower end anchor cup nut of the second suspension cable without the 3rd nut of band before, recycle bridge floor truck crane Machine 10 arranges soft suspension centre cooperation together on the second suspension cable 14 while being lifted up, until 14 tower end anchor cup of the second suspension cable leads Draw and pass the corresponding tower end cable guide pipe 15 in Sarasota end bay side and tighten the 3rd nut to after design attitude;

S50. the beam-ends of the second suspension cable 14 is installed:First segment second is set on the beam-ends anchor cup of the second suspension cable 14 Pull bar, arranges soft distracted position in second suspension cable beam-ends anchor cup one end, and hangs 1 tackle pulley, lead in corresponding beam-ends rope Pipe hangs another 1 tackle pulley away from the side of Sarasota, and bridge floor steel wire rope of windlass is fastened in the second oblique pull after 2 tackle pulleys In the soft distracted position of rope 14, start bridge floor hoist engine and drag the second suspension cable 14, treat that beam-ends anchor cup is led to corresponding beam-ends rope Above 2~3m positions stop pipe 16, install adapter in the second tensioning of first segment rod rear end, install steel and twist on adapter Steel strand wires front end is penetrated beam-ends cable guide pipe 16 by line, is continued with bridge floor elevator machine travel, and adjusts the with bridge floor automobile loop wheel machine 10 The angle of one the second tension rod of section and beam-ends anchor cup, leads until the second tension rod of first segment and beam-ends anchor cup fully enter beam-ends rope Pipe 16, when the second tension rod of first segment and beam-ends anchor cup enter beam-ends cable guide pipe 16, using 10 raising cord of bridge floor automobile loop wheel machine Body is progressively carrying the inclination angle of the second tension rod of first segment and beam-ends anchor cup so as to, this process consistent with 16 axis of beam-ends cable guide pipe The speed that cable body lifts is commanded by special messenger, prevents that the second tension rod of first segment and beam-ends anchor cup screw thread are impaired, when beam-ends anchor cup it is complete When portion enters beam-ends cable guide pipe 16, rubber peel or gunny is laid in 16 lower port of beam-ends pipe conduit, prevent traction later stage rope Body causes to damage with beam-ends cable guide pipe lower port directly contact.Continue with bridge floor elevator machine travel, when steel strand wires pass beam-ends rope Stop after conduit, bridge floor elevator machine travel, soft traction tensioning equipment under end bay beams of concrete is installed, it is soft under end bay beams of concrete Many steel strand wires are first tuned into isometric by traction tensioning equipment according to the length mark on steel strand wires before starting.Can employment when adjusting long Work or 270kN jack are carried out.The second suspension cable is drawn using soft traction tensioning equipment under end bay beams of concrete by steel strand wires 14, when the second tension rod of first segment exposes 40~50mm of anchor plate under beam-ends cable guide pipe beam, the second secondary nut of installation is screwed, with Ensure later stage traction safety, continue traction, while continue to screw the second secondary nut, until the second secondary spiral shell of the second tension rod of first segment Female Dai Ping buttons, until after the second secondary nut of the second tension rod of first segment wears flat button, remove soft traction tensioning under end bay beams of concrete Equipment, check steel strand surface damage situations, depending on damage situations degree come decide whether change steel strand wires, in order to next The safety traction of skew cables.Connect the second tension rod of second section after the second tension rod of first segment, end bay beams of concrete is installed Lower hard traction tensioning equipment 17, draws the second oblique pull by hard traction tensioning equipment 17 under end bay beams of concrete along beam-ends cable guide pipe Rope 14, the second suspension cable tighten the 4th nut after stretching out beam-ends cable guide pipe on beam-ends anchor cup, per one stroke of tensioning, by the 4th Nut screwing clamping, to ensure later stage tensioning safety, period removes the second tension rod of second section, until beam-ends anchor cup wear it is flat buckle, i.e., the Twist concordant with anchor cup outer end in four nut outer ends;

S60. synchronous strange land tensioning:Set by hard traction tensioning under hard traction tensioning equipment 11 in tower and end bay beams of concrete Standby 17, synchronous symmetrically tensioning the first suspension cable 3 and the second suspension cable 14, until tensioning is completed.

The present invention compared with prior art, with advantages below:

(1)The present invention takes bridge floor and the mode of combining carries out exhibition rope in the air, solves the bridge floor space exhibition of long weight suspension cable Rope inadequate problem, it is to avoid large radius bending by force is turned around the safety problem for hanging, it is to avoid construction scratches cable body, it is ensured that construction Safety.

(2)The rear beam-ends of " the first tower back rest hangs " scheme is taken to hang long weight suspension cable " tower end hangs after the first beam " side of solution After in case, traction Dipeptiven is big when hanging, unsafe problem at tower end.

(3)Take various lifting means modes of cooperating to lift suspension cable and carry out tower end to hang, solve suspension cable " first The tower back rest hangs " the inadequate problem of pull strength when first tower end hangs in scheme upwards, can avoid arranging super large ton in tower top Position hoist engine, while decrease large-tonnage hoist engine Hoisting Security risk.

(4)Take steel box-girder tuyere base plate arrange preformed hole carry out " the first tower back rest hangs " afterwards beam-ends install when it is soft traction apply Work, can solve the problems, such as that soft draw operations space is inadequate, it is to avoid design, manufacture special soft pulling equipment or by conventional equipment Processing and remodelling is repeated, construction cost is reduced, the construction period is processed, and the safety of construction can be improved.

(5)Take and back-twist device is additionally arranged at the bottom in stretch-draw jack, can avoid not opening up rope back twist time completely in suspension cable In the case of strength, when tensioning is drawn, suspension cable drives steel strand wires, jack etc. to twist, and security incident occurs.

(6)Beam-ends and the synchronization strange land tensioning of tower end is taken, upper king-post strut narrow space can be solved, the problem of constructional difficulties, Useless one group of tensioning extension rod is all cut when avoiding each inclined guy cable stretching, the waste of material is reduced, and reduces construction cost.

Certainly, the invention is not limited to above-mentioned embodiment, and those of ordinary skill in the art are without prejudice to this Equivalent variations or replacement can be also made on the premise of spirit, and the modification of these equivalents or replacement are all contained in the application right Require in limited range.

Claims (9)

1. the long weight suspension cable under the conditions of a kind of limited space hangs installation method, including the first suspension cable in Sarasota across side And the installation of the second suspension cable of Sarasota end bay side, it is characterised in that comprise the following steps:
S10. the tower end of the first suspension cable is installed:First tension rod is set on the tower end anchor cup of the first suspension cable, is pulled up First suspension cable, is drawn in the first tension rod is entered and is passed Sarasota in the corresponding tower end cable guide pipe in side, installation tower firmly Tensioning equipment, and the first secondary nut is tightened on the first tension rod;
S20. the beam-ends of the first suspension cable is installed:The first suspension cable of across direction traction in, makes the beam-ends anchor cup of the first suspension cable Into corresponding beam-ends cable guide pipe, beam-ends anchor cup is drawn along beam-ends cable guide pipe, when beam-ends anchor cup passes beam-ends cable guide pipe to design The second nut is tightened behind position;
S30. the tower end of the first suspension cable is drawn firmly:Led across the tower end rope of side along Sarasota by hard traction tensioning equipment in tower Pipe draws the first suspension cable, while tightening the first secondary nut, the first suspension cable is twisted after stretching out tower end cable guide pipe on the anchor cup of tower end Tight first nut, until tower end anchor cup wears flat button;
S40. the tower end of the second suspension cable is installed:The second suspension cable is pulled up, makes the tower end anchor cup of the second suspension cable enter rope The corresponding tower end cable guide pipe in tower end bay side, passes tower end cable guide pipe in the tower end anchor cup of the second suspension cable and twists to after design attitude Tight 3rd nut;
S50. the beam-ends of the second suspension cable is installed:Second tension rod is set on the beam-ends anchor cup of the second suspension cable, to end bay side To the second suspension cable is drawn, make the second tension rod enter corresponding beam-ends cable guide pipe, beam-ends cable guide pipe is passed in the second tension rod Afterwards, the second secondary nut is tightened on the second tension rod, hard traction tensioning equipment under end bay beams of concrete is installed, by end bay concrete Under beam, hard traction tensioning equipment draws the second suspension cable along beam-ends cable guide pipe, while tightening the second secondary nut, the second suspension cable is stretched The 4th nut is tightened on beam-ends anchor cup after going out beam-ends cable guide pipe, until beam-ends anchor cup wears flat button;
S60. synchronous strange land tensioning:Tensioning equipment is drawn by hard under hard traction tensioning equipment in tower and end bay beams of concrete, together The first suspension cable of symmetrical tensioning and the second suspension cable is walked, until tensioning is completed.
2. the long weight suspension cable under the conditions of limited space according to claim 1 hangs installation method, it is characterised in that:Step Also include before rapid S10 that the first suspension cable of step S05. opens up rope:Cable tray is arranged in below Sarasota, by the first suspension cable of rolling Lifting is placed on cable tray, and ensures that the beam-ends anchor cup one of the first suspension cable faces up placement, and beam-ends anchor cup is pulled out juxtaposition On anchor head dolly, anchor head dolly is carried out into exhibition rope, the first suspension cable and girder to the girder front end traction away from Sarasota direction 2m~3m placements one are spaced between bridge floor and put rope dolly, and putting place mat rubber peel on rope dolly, when anchor head dolly draws To traction is stopped during girder front end, relay by the first suspension cable not yet launched above cable tray lifting and after overturning in the air Cable tray is returned, placements so that the tower end anchor cup one of the first suspension cable faces up is opened up rope in the air and constructed, in the first suspension cable First fill the first tension rod of first segment in the anchor cup of tower end, install the pull rope of tower top hoist engine from inside upper Sarasota through in Sarasota across After the corresponding tower end cable guide pipe in side, be connected with the first tension rod of first segment front end, during aerial exhibition rope using tower top hoist engine and Sarasota construction tower crane coordinates traction tower end anchor cup slowly to move up, while coordinate, until putting rope On disk, the first suspension cable is also remained and stops suspension cable lifting when 2 circles do not launch, and the first suspension cable of last 2 circle adopts bridge floor truck crane Machine is opened up rope auxiliary in the air, separately arranges a suspension centre, using bridge floor vapour on the first suspension cable for have been detached from cable tray Car loop wheel machine connects the suspension centre and lifts the first suspension cable, until last 2 the first suspension cables of circle are slowly lifted into disengaging cable tray, will Cable tray is removed, and then slowly loose hook drops back into bridge floor to bridge floor automobile loop wheel machine, removes suspension centre, tower top hoist engine and Sarasota construction tower crane Cooperation continues up lifting tower end anchor cup, completes the first suspension cable exhibition rope.
3. the long weight suspension cable under the conditions of limited space according to claim 2 hangs installation method, it is characterised in that:Step In rapid S10, after the completion of the first suspension cable exhibition rope, tower top hoist engine is cooperated with Sarasota construction tower crane and continue slow by tower end anchor cup Slowly it is pulled up, while arrange soft towing point auxiliary on the first suspension cable using bridge floor hoist engine will launch to girder front end First suspension cable is drawn to Sarasota direction, when tower top hoist engine and Sarasota construct the total lifting force upwards of tower crane not enough, and tower Before in the anchor cup of end, the first tension rod of first segment is without the first secondary nut of band, recycling bridge floor automobile loop wheel machine is on the first suspension cable Soft suspension centre cooperation is set together while being lifted up, until the first tension rod of first segment is led into across side tower end rope in Sarasota Pipe, loads onto the first secondary nut in the first tension rod of first segment, releases tower top hoist engine, Sarasota construction tower crane and bridge floor truck crane Machine, installs the first tension rod of second section in the first tension rod of first segment afterbody, installs hard traction tensioning equipment in tower, using in tower The first tension rod of second section is transferred by hard traction tensioning equipment, tightens the first secondary nut on the first tension rod of second section.
4. the long weight suspension cable under the conditions of limited space according to claim 3 hangs installation method, it is characterised in that:Step In rapid S20, in girder, across direction front end arranges 1 tackle pulley, and in the first suspension cable beam-ends, across direction front portion arranges soft traction Point, sets on soft towing point and hangs another 1 tackle pulley, and bridge floor steel wire rope of windlass is fastened in the first suspension cable after 2 tackle pulleys Soft towing point on, start bridge floor hoist engine and drag the first suspension cable, treat beam-ends anchor cup to before corresponding beam-ends cable guide pipe 2~ 3m positions stop, and install adapter, install steel strand wires, by steel strand wires on adapter in the first suspension cable beam-ends anchor cup Front end penetrates beam-ends cable guide pipe, continues to use bridge floor elevator machine travel, and adjusts beam-ends anchor cup angle with bridge floor automobile loop wheel machine, until Beam-ends anchor cup fully enters beam-ends cable guide pipe, and bridge floor elevator machine travel to steel strand wires stops after passing beam-ends cable guide pipe, in installation The soft traction tensioning equipment in girder steel, draws the first suspension cable using soft traction tensioning equipment in mid-span steel girder by steel strand wires, When beam-ends anchor cup exposes beam-ends cable guide pipe, the second nut of installation is screwed, continues traction, while continue to screw the second nut, directly Beam-ends anchor cup is drawn to into design attitude extremely.
5. the long weight suspension cable under the conditions of limited space according to claim 4 hangs installation method, it is characterised in that:Step In rapid S30, start hard traction tensioning equipment the first suspension cable of tensioning in tower, during tensioning, by the first secondary nut screwing clamping, the first oblique pull Rope tightens the first nut after stretching out tower end cable guide pipe on the anchor cup of tower end, removes the first tension rod of second section therebetween, it is last until Tower end anchor cup wears flat button.
6. the long weight suspension cable under the conditions of limited space according to claim 5 hangs installation method, it is characterised in that:Step It is rapid between S30, S40, to include that the second suspension cable of step S35. opens up rope:Second suspension cable is directly being placed after bridge in the lifting of end bay position On the cable tray of end bay, the tower end anchor cup of the second suspension cable is installed on anchor head dolly, anchor is drawn to below Sarasota During head dolly carries out bridge floor exhibition rope, exhibition rope, 2m~3m placements one are spaced between the second suspension cable and girder bridge floor and are put Rope dolly, and place mat rubber peel on rope dolly is being put, stop traction when tower end anchor cup is drawn to position is hung below Sarasota, Install at the tower end for proceeding by the second suspension cable.
7. the long weight suspension cable under the conditions of limited space according to claim 6 hangs installation method, it is characterised in that:Step In rapid S40, screw in the tower end anchor cup of the second suspension cable and towing plate is installed, the pull rope of tower top hoist engine is installed from upper Sarasota The inside is connected with towing plate is installed, while using on the second suspension cable through after the corresponding tower end cable guide pipe in Sarasota end bay side Soft suspender belt arranges tower crane suspension centre, and being coordinated using tower top hoist engine and Sarasota construction tower crane carries out being lifted up for the second suspension cable; Meanwhile, continue bridge floor exhibition rope to be carried out across direction in using bridge floor elevator the second suspension cable of machine travel, treat remaining on cable tray After second suspension cable all launches on bridge floor, now tower top hoist engine and Sarasota construction tower crane coordinate and carry the second suspension cable Rise in the air, bridge floor hoist engine continues the remaining cable body of traction and moves to Sarasota direction, synchronously carry out tower end anchor cup and lifted, work as tower Top hoist engine and Sarasota construct the total lifting force upwards of tower crane not enough, and the second oblique tensile tower end anchor cup without the 3rd nut of band Before, bridge floor automobile loop wheel machine is recycled soft suspension centre cooperation to be set together while being lifted up, until second on the second suspension cable The anchor cup traction of oblique tensile tower end passes the corresponding tower end cable guide pipe in Sarasota end bay side and tightens the 3rd nut to after design attitude.
8. the long weight suspension cable under the conditions of limited space according to claim 7 hangs installation method, it is characterised in that:Step In rapid S50, the second tension rod of first segment is set on the beam-ends anchor cup of the second suspension cable, in second suspension cable beam-ends anchor cup one end Soft distracted position is set, and hangs 1 tackle pulley, another 1 coaster is hung in corresponding beam-ends cable guide pipe away from the side of Sarasota Group, bridge floor steel wire rope of windlass after 2 tackle pulleys are fastened in the soft distracted position of the second suspension cable, start bridge floor elevator Machine drags the second suspension cable, treats that beam-ends anchor cup stops to 2~3m positions before corresponding beam-ends cable guide pipe, in first segment second Back end of tie rod installs adapter, installs steel strand wires on adapter, and steel strand wires front end is penetrated beam-ends cable guide pipe, continues to use Bridge floor elevator machine travel, and the angle of the second tension rod of first segment and beam-ends anchor cup is adjusted with bridge floor automobile loop wheel machine, until first Save the second tension rod and beam-ends anchor cup fully enters beam-ends cable guide pipe, continue with bridge floor elevator machine travel, when steel strand wires pass beam Stop after the cable guide pipe of end, bridge floor elevator machine travel stops, soft traction tensioning equipment under end bay beams of concrete is installed, it is mixed using end bay Under solidifying Tu Liang, soft traction tensioning equipment draws the second suspension cable by steel strand wires, leads when the second tension rod of first segment exposes beam-ends rope Guan Shi, screws the second secondary nut of installation, continues traction, while continuing to screw the second secondary nut until the second tension rod of first segment the Second mate's nut wears flat button.
9. the long weight suspension cable under the conditions of limited space according to claim 8 hangs installation method, it is characterised in that:The After the secondary nut of one the second tension rod second of section wears flat button, soft traction tensioning equipment under end bay beams of concrete is removed, in first segment the Connect the second tension rod of second section after two tension rods, hard traction tensioning equipment under end bay beams of concrete is installed, by end bay coagulation Under Tu Liang, hard traction tensioning equipment draws the second suspension cable along beam-ends cable guide pipe, and the second suspension cable is stretched out after beam-ends cable guide pipe in beam The 4th nut is tightened on the anchor cup of end, until beam-ends anchor cup wears flat button.
CN201510646387.2A 2015-09-30 2015-09-30 Hanging mounting method of long heavy stay cable under space limited condition CN105401523B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108149928A (en) * 2017-12-21 2018-06-12 中交路桥华南工程有限公司 The tower end installation method of suspension cable

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Publication number Priority date Publication date Assignee Title
CN106348034B (en) * 2016-08-30 2018-08-17 中国能源建设集团安徽电力建设第一工程有限公司 Suspension cable steel construction large-scale power station coal transporting trestle stayed Cable Construction method
CN109811889B (en) * 2019-01-23 2020-11-03 中国五冶集团有限公司 Saddle-shaped cable net cable spreading installation method under space limited condition
CN110258344A (en) * 2019-07-03 2019-09-20 中交路桥华南工程有限公司 Inclined guy cable stretching construction method

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CN1122742C (en) * 1998-11-09 2003-10-01 柳州欧维姆建筑机械有限公司 Method and system for suspending oblique guys of cable stayed bridge
KR100969005B1 (en) * 2009-11-06 2010-07-09 동아대학교 산학협력단 Constructing method of suspension bridge and temporary cable therefor
CN102444086B (en) * 2011-10-14 2014-04-02 中铁大桥局股份有限公司 Cable hanging system for inclined stay cable of bridge and cable hanging method for inclined stay cable of bridge
CN102535348B (en) * 2012-03-14 2013-10-30 天津市市政工程设计研究院 Method for tensioning stayed cables of hinged tower cable stayed bridge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108149928A (en) * 2017-12-21 2018-06-12 中交路桥华南工程有限公司 The tower end installation method of suspension cable
CN108149928B (en) * 2017-12-21 2020-05-19 中交路桥华南工程有限公司 Tower end installation method of stay cable

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