CN106592441A - Mounting method of stayed cable of cable-stayed bridge - Google Patents

Mounting method of stayed cable of cable-stayed bridge Download PDF

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Publication number
CN106592441A
CN106592441A CN201710028387.5A CN201710028387A CN106592441A CN 106592441 A CN106592441 A CN 106592441A CN 201710028387 A CN201710028387 A CN 201710028387A CN 106592441 A CN106592441 A CN 106592441A
Authority
CN
China
Prior art keywords
tower
steel strand
anchor
strand wires
cable
Prior art date
Application number
CN201710028387.5A
Other languages
Chinese (zh)
Inventor
刘怀刚
高世强
安邦
庄值政
孙战赢
张凤凰
费永忠
肖向荣
赵升辉
檀兴华
张铮
葛纪平
Original Assignee
中交路桥华南工程有限公司
中交路桥建设有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中交路桥华南工程有限公司, 中交路桥建设有限公司 filed Critical 中交路桥华南工程有限公司
Priority to CN201710028387.5A priority Critical patent/CN106592441A/en
Publication of CN106592441A publication Critical patent/CN106592441A/en

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Classifications

    • 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
    • E01D11/00Suspension or cable-stayed bridges
    • E01D11/04Cable-stayed 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
    • E01D19/14Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00Material constitution of bridges
    • E01D2101/30Metal

Abstract

The invention discloses a mounting method of a stayed cable of a cable-stayed bridge. The mounting method comprises the following steps that an under-girder anchoring device is mounted on a main girder section; a tower-end anchoring device is mounted on a cable bent tower; a stayed cable outer protection sleeve is hoisted and lifted and laid with a preset angle, and the stayed cable outer protection sleeve is collinearly arranged with the under-girder anchoring device and the tower end anchoring device which are relative to the stayed cable anchor; steel stranded wires penetrate through the outer protection sleeve one by one from the tower end to the beam end, and the two ends of each steel stranded wire are anchored on the under-girder anchoring device and the tower end anchoring device correspondingly; and the stayed cable is integrally tensioned. According to the explosive-removing unmanned aerial vehicle, the steel stranded wires penetrate through the outer protection sleeve from top to bottom, so that in the hoisting process of the steel stranded wires, the needed tractive force is reduced, construction procedures are reduced, construction time is saved, and meanwhile, abrasion to the outer protection sleeve is reduced.

Description

The installation method of stay cable of cable-stayed bridge

【Technical field】

The present invention relates to field of bridge construction, is specifically designed the installation method of stay cable of cable-stayed bridge

【Background technology】

Cable-stayed bridge is a kind of bridge being directly pulled in girder with many drag-lines on Tasso, is tower, tension by pressure-bearing Rope and hold a kind of structural system that curved beam body combines.It is considered as drag-line and replaces the multispan elastic bearing of buttress continuous Beam.It reduces can moment of flexure in beam body, reduce building height, alleviate construction weight, save material.Cable-stayed bridge is mainly by rope Tower, girder, suspension cable composition, are a kind of self-anchored type systems, and its horizontal force is received by joist support.Beam is gone back in addition to being bearing on pier It is bearing on the suspension cable drawn by king-post.Material difference as used by beam can be divided into steel deck cable stayed bridge, with reference to girder stayed-cable bridge and mixed Solidifying soil girder stayed-cable bridge.

With the continuous development of bridge technology, cable-stayed bridge is widely used as one of the main type selecting of Longspan Bridge, It is built span and increasingly increases, and suspension cable increases therewith as its length of the main bearing member of cable-stayed bridge and section, scene Difficulty of construction and used device are continuously increased.In the hanging cable construction method of conventional suspension cable, in suspension cable outer sheath tube and first After root steel strand wires are installed, the program for installing remaining steel strand wires in suspension cable trocar sheath by root is as follows:By tower top loop wheel machine or volume The steel wire rope (steel wire rope end head is connected with biography plate) for raising machine transfers to bridge floor the outer sheath tube mouth of pipe along outer sheath tube inside pipe wall;By bridge Steel strand wires on the steel strand wires disk of face (2 every time, also can one) are hung on biography plate by deflecting roller;By loop wheel machine on tower or hoist engine Traction passes plate and rises to the outer cableway mouth of pipe of tower;Drawn by root according to the method for first steel strand wires of traction using loop wheel machine or hoist engine The upper clip to anchor head;With single tendon stretch jack tension in tower to builder's tonnage, record tension data and parameter;Lower section loop wheel machine Or the steel wire rope of hoist engine carries out the traction tensioning work of next round steel strand wires.

In above-mentioned construction method, the steel wire rope of tower end pipe mouth is risen in traction in work progress for drawing steel strand wires After completing a steel strand wires, need to transfer again to bridge floor, can just carry out the traction construction of next steel strand wires, this mode one Aspect wastes the engineering time, extends the duration of hanging cable construction, on the other hand, during decentralization steel wire rope, steel wire rope Extra abrasion can be caused to the inwall of outer sheath tube, be unfavorable for the protection of outer sheath tube.Additionally, when steel strand wires length reaches one When determining degree, conduct oneself with dignity larger, relative to the mode of vertical lifting, carry out hanging required for liter along the ascending path with angle of inclination Pull strength it is also bigger, increase difficulty of construction.

【The content of the invention】

It is an object of the invention to provide a kind of be used to be easy to lift and save construction in stay cable of cable-stayed bridge work progress The installation method of the suspension cable of time.

To realize the purpose, the present invention is adopted the following technical scheme that:

The installation method of stay cable of cable-stayed bridge, it comprises the steps:

The anchor under mounting rail on girder sections;

Tower end anchor is installed on Sarasota;

By suspension cable outer sheath tube lift lifting and with predetermined angle laying, with the beam corresponding to the suspension cable under Anchor and tower end anchor are collinearly arranged;

Steel strand wires are run through into one by one the outer sheath tube from tower end to beam-ends, and it is anchored at respectively anchoring under the beam On device and tower end anchor;

Integral tension is carried out to the suspension cable.

Further, anchor is arranged on the lower section in cable-stayed bridge face under the beam, and it includes being provided with steel strand wires installation The beam-ends anchor slab in hole, two ends bear against beam-ends support tube on the beam-ends anchor slab and beam surface concrete, by beam-ends Beam-ends anchor plate that nut is fixedly connected with the beam-ends support tube and installed in the steel strand wires through the beam-ends anchor slab The beam anchor intermediate plate of end.

Specifically, tower end anchor is arranged on the upper king-post strut of Sarasota, and it includes being provided with the tower of steel strand wires installing hole End anchor slab, two ends bear against tower end support tube on tower end anchor slab and Sarasota surface concrete, by tower end nut The tower end anchor plate being fixedly connected with tower end support tube and the end installed in the steel strand wires through tower end anchor slab Tower end anchoring clamping plate.

Preferably, the outer sheath tube is made up of at least two sections sleeve pipe splicings, the welding step between two sections of described sleeve pipes For:

The end surfaces of two sections of sleeve pipes to be welded are planished and alignd;

Using the described sleeve pipe end surfaces after heater plate alignment;

Clamp the two sections of sleeve pipes after heating to cool down up to end surfaces, to complete welding.

Further, outer sheath tube described in wall scroll is lifted lifting and is included the step of laying with predetermined angle:

The outer sheath tube that completes will be welded and lay in place in order to lift;

Auxiliary steel strand wires is penetrated and formed in the outer sheath tube lifting component, distinguish the beam fixing end of the lifting component With tower fixing end;

The auxiliary steel strand wires are fixedly clamped with the outer sheath tube in the beam fixing end;

The lifting component is lifted using lifting appliance, after the tower fixing end reaches predetermined altitude, will be described auxiliary The tower fixing end for helping steel strand wires penetrates tower end anchor and fixes;

The beam fixing end of the auxiliary steel strand wires is drawn to the beam anchor and fixed;

Aiding in steel strand wires described in beam-ends tensioning, make that the outer sheath tube is straight and upright to be raised up to predetermined angle, complete wall scroll institute State the lifting of outer sheath tube.

Specifically, the predetermined angle is the folder under beam between anchor and the line and bridge floor of tower end anchor Angle.

Further, it is described that steel strand wires are run through into one by one the outer sheath tube from tower end to beam-ends, and it is anchored respectively In step under the beam on anchor and tower end anchor, single steel strand wires run through the outer sheath tube the step of wrap Include:

Install in bridge floor and put rope frame, steel strand pulling machine is installed in Sarasota tower top;

Single steel strand is drawn to the steel strand pulling machine from the rope frame of putting;

The mouth of pipe using the steel strand pulling machine by single steel strand from the outer sheath tube at tower end is through to outer The mouth of pipe of the protecting pipe in beam-ends;

To run through the two ends of the single steel strand of the outer sheath tube respectively with tower end anchor and The anchoring of beam anchor device is fixed;

Single steel strand described in tensioning reaches target stress value, completes the lashing of single steel strand.

Specifically, it is described that the single steel strand is solid with tower end anchor and the anchoring of beam anchor device respectively In fixed step, the anchors step of single steel strand includes:

The joint of steel strand wires end is connected with hauling rope;

The steel strand wires are made to pass through anchor using the hauling rope;

Anchoring clamping plate is being installed through the steel strand wires end of the anchor, the anchoring of single steel strand is completed.

Preferably, in the step of single steel strand described in the tensioning reaches target stress value, the behaviour of the tensioning Make by pressure gauge read single steel strand stress value, and by jack repeatedly tensioning make single steel strand reach target answer Force value.

Further, the operation that tensioning is carried out to the suspension cable is carried out at tower end, its step includes:

Integral tension device is lifted to the stretching end of the suspension cable to be tensioned in Sarasota;

Using band tensioning suspension cable described in integral tension device tensioning, until it reaches the target rope force value of suspension cable;

The integral tension device is removed, to complete the integral tension of suspension cable.

Relative to prior art, what the present invention to be reached has the beneficial effect that:

The installation method of stay cable of cable-stayed bridge provided by the present invention, outer sheath tube lifts and anchored finish first, so The steel strand wires vertical lifting for running through outer sheath tube will be needed afterwards to tower top, it is finally that steel strand wires are top-down through the outer shield Sleeve pipe.Because the lifting method of steel strand wires is vertical lifting, therefore the pull strength needed for it is less, reduces to pulling equipment Load.In addition, in front and back two steel strand wires can be continuously continual through outer sheath tube, after the completion of a steel strand wires run through, only need Cut off, you can carry out next steel strand wires running through in outer sheath tube, working procedure is reduced, when having saved construction Between, and reduce the number of times that is worn of steel strand wires outer sheath tube in construction.

【Description of the drawings】

The suspension cable scheme of installation of the installation method of the stay cable of cable-stayed bridge that Fig. 1 is provided for the present invention.

The lifting schematic diagram of the outer sheath tube of the installation method of the stay cable of cable-stayed bridge that Fig. 2 is provided for the present invention.

The beam anchor apparatus structure schematic diagram of the installation method of the stay cable of cable-stayed bridge that Fig. 3 is provided for the present invention.

The tower end anchor structural representation of the installation method of the stay cable of cable-stayed bridge that Fig. 4 is provided for the present invention.

【Specific embodiment】

Below in conjunction with the accompanying drawings the present invention is further described with exemplary embodiment, identical label wherein in accompanying drawing All refer to identical part.Additionally, if it is known that the detailed description of technology is for illustrating the invention is characterized in that unnecessary , then omitted.

Suspension cable scheme of installation such as Fig. 1 of the installation method of stay cable of cable-stayed bridge disclosed by the invention, its concrete grammar It is the anchor 12 under mounting rail on girder sections;Tower end anchor 11 is installed on Sarasota;By suspension cable outer sheath tube 2 Lifting lifting simultaneously with predetermined angle laying, with anchor 12 under the beam corresponding to the suspension cable and tower end anchor 11 conllinear arrangements;Steel strand wires 30 are run through into one by one the outer sheath tube 2 from tower end to beam-ends;The two ends of the suspension cable are carried out Anchoring simultaneously carries out tensioning to the suspension cable.

It is pointed out that it is above-mentioned by steel strand wires 30 from tower end to beam-ends one by one run through the outer sheath tube 2 the step of in, It is described to be not limited in one by one single, and it is interpreted as the steel strand wires of a group or a unit, one of which can be 2 or 2 Steel strand wires above.

Wherein, put rope frame 31 to lay near Sarasota, strand pulling machine 32 is located at tower top, there is provided the pull strength that steel strand wires 30 rise. Steel strand wires 30 from put in rope frame 31 release, by strand pulling machine 32 pull strength by vertical lifting;The steel strand wires 30 pass through strand pulling machine Into the upper port of outer sheath tube 2 after 32, and slide downwards along the inside of outer sheath tube 2, until from the beam-ends of outer sheath tube Port passes, and is anchored under beam on anchor 12;When the steel strand wires 30 through strand pulling machine reach preset length, institute is cut off Steel strand wires 30 are stated, and the steel strand wires of cut-out are connected with the hauling rope at tower end, using the hauling rope steel strand wires are passed through Tower end anchor 11;Finally, tensioning is carried out to the steel strand wires of installation, the stress of single steel strand is read by pressure gauge Value, and repeatedly tensioning makes single steel strand reach target stress value by jack;So far, the installation of single steel strand is completed. Repeat aforesaid operations, complete the installation of all steel strand wires in suspension cable, finally the two ends of suspension cable are anchored and to described Suspension cable carries out tensioning.

After completing the lashing of all steel strand wires, because benchmark rope during single hanging cable tensioning is flat according to whole beam Cable power It is modified by the deflection of girder and Sarasota after, the method can make after installation single Suo Li aggregate-values and set Meter is close to, but still suffers from certain error with the Suo Li after tensioning.Set to ensure that actual total Suo Li of bridge line style cable body meets Meter is required, it is therefore necessary to which the cable body after completing to single tendon stretch carries out one or many cable force adjustment.Integral tension is single Sections steel truss beam bolt apply twist complete, floorings weld completely complete after carry out.Integral tension stretching end in tower is carried out, if Standby installation can be hung to spike, jack, tension rod, adapter sleeve on tower inner platform using tower crane, then be moved using traverser Move corresponding rope tensioning end position, by means of chain block by adapter sleeve, tension rod, jack and spike, tensioning nut according to Secondary installation is fixed, the error of centralization≤5mm when jack is installed.During tensioning, monitor closely elevation of main girders is wanted when absolute altitude reaches design Ask, that is, screw the work nut on backing plate.In order to overcome the factors such as retraction, tensioner deformation, can be with ultra stretching during tensioning Control tonnage adds 1%.Same rope, asks for ask per a pair and accomplishes synchronous symmetrical, mutually echoes, the differential error Jing after being converted into power ≤ 3%.

Beam, the anchorage installation at tower end are respectively adopted following methods:The installation site of anchor set 12 is according to suspension cable under beam Fixed position required on girder sections determines, to suspension cable the anchoring work of anchoring status is kept all the time by stretching process Tool is made, and during installation, anchorage assembly is hung under the beam of corresponding rope number at anchor plate mouth with tower crane or tackling system, PE conduits Then put down steel wire rope from bridge floor cable guide pipe mouth and drawn to outside bridge floor and interim fixation front in end;Tower end anchorage Device 11 determines that stretching end sets using extruding anchor or P anchors, its installation site according to the required fixed position on Sarasota of suspension cable On tower, during installation tower crane or tackling system by one section of anchorage component of band PE conduits cable guide pipe mouth (high one end) from tower Along tube wall down slow play (PE catheter ends are front), until (low port) and interim fixation outside cable guide pipe mouth, it is determined that with The arrangement of beam-ends anchorage hole position is fixed temporarily after corresponding with chain block.During anchorage assembly is installed, it should be noted that tower end Correspond with the hole position arrangement of beam-ends anchor slab, and protection is exposed at without damage, crimp of PE conduits outside anchorage etc. and lacks Fall into.It should also be noted that stretching end and fixing end anchor hole are horizontally arranged by every round, two ends anchor hole is mutually corresponded to, must not be wrong Position phenomenon;Anchorage centrage is consistent with anchor plate centrage.

The suspension cable of cable-stayed bridge is different according to its design attitude, and its length is also differed, accordingly, the length of outer sheath tube 2 Degree changes also with the change of suspension cable length.The length of the outer sheath tube 2 can be counted according to suspension cable anchor point coordinate Calculate, then calculate the length of outer sheath tube 2, further according to result of calculation, the outer sheath tube to being segmented is welded, so as to obtain Whole piece meets the outer sheath tube of design length requirement.

Specifically, the operating procedure that the outer sheath tube of segmentation is welded into whole piece outer sheath tube 2 is:Weldering is laid on bridge floor Pick, and be allowed to level;Outer sheath tube is put into into bonding machine, and it is fixed;Planing outer sheath tube solder side;Hot melt butt welding, welding When, reply section pipe numbering, section length of tube, plumb joint preheating temperature, preheating pressure, heat time heating time, switching time, welding pressure, Cool time and weld interval etc. are recorded;Complete welding.

Welding operation step between two sections of outer sheath tubes is:By the planing of outer sheath tube end surfaces;Remove planing tool and clamping sets It is standby to check whether outer sheath tube end face coincide;Heating plate is placed in the middle of two sections of outer sheath tubes, and apparatus for fastening;Welding is completed.

As shown in Fig. 2 the lifting schematic diagram of outer sheath tube, outer sheath tube is using HDPE protecting pipes.Due to bridge floor space Limit, to be welded on ground, therefore whole outer sheath tube being welded is transported to the bridge for being easy to lift before lifting On face or ground location, when putting sleeve pipe is erected with rolling stand 23, prevent HDPE pipe surfaces from damaging.When bridge floor is welded, Because avoiding secondary conveying as far as possible, along bridge to putting, lifting end is near king-post for the HDPE pipes being welded.Its concrete operation step is such as Under:

Transport has welded the outer sheath tube 2 for completing on the bridge floor or ground location for being easy to lift;

Installation accessories apparatus are in the outer sheath tube;

Penetrate in the outer sheath tube auxiliary steel strand wires 24, and by it is described auxiliary steel strand wires 24 front end and the outer shield Sleeve pipe front end is fixed by clamping device 21;

The auxiliary steel strand wires 24 are sling together with the outer sheath tube 2 using lifting appliance 22, reaches predetermined height After degree, steel strand wires are penetrated into tower end anchor and is fixed;

The lower end of the traction auxiliary steel strand wires is to anchor under the beam and fixed;

Steel strand wires are aided in described in tensioning, makes that the outer sheath tube is straight and upright to be raised up to predetermined angle A, complete the outer sheath tube Lifting.

Wherein described predetermined angle A is the angle under beam between anchor and the line and bridge floor of tower end anchor.

The beam anchor apparatus structure of the installation method of the stay cable of cable-stayed bridge that the present invention is provided is as shown in Figure 3.Beam-ends anchor The lower section put installed in cable-stayed bridge face is fixedly mounted with, its specific installation site setting in Cable-stayed Bridges according to stay cable of cable-stayed bridge Meter coordinate determines.Its concrete structure includes that the beam-ends anchor slab 41, two ends for being provided with steel strand wires installing hole is born against in the beam-ends Beam-ends support tube 45 on anchor slab 41 and beam surface concrete, it is fixedly connected with the beam-ends support tube 45 by beam-ends nut 44 Beam-ends anchor plate 42 and the beam anchor intermediate plate 43 installed in the end of the steel strand wires through the beam-ends anchor slab.Wherein, Steel strand wires 30 pass through beam-ends anchor slab 41, the noose of beam anchor intermediate plate 43 to pass through beam-ends anchor in steel strand wires 30 by steel strand wires installing hole One end of plate 41, when steel strand wires receive draw-in, beam anchor intermediate plate 43 is drawn in steel strand wires installing hole, and with pulling force Increase and clamp steel strand wires 30, play a part of anchoring.Beam-ends support tube 45 supports the beam-ends anchor slab 41, and by beam-ends spiral shell Mother 44 and beam-ends anchor plate 42, are fixedly connected, because beam-ends anchor plate 42 has bigger diameter so as to play increase beam-ends anchor The effect put with the contact area between beam surface concrete is fixedly mounted with, reduces the phenomenon of stress concentration, prevent beam surface concrete Receive destruction.

The tower end anchor structure of the installation method of the stay cable of cable-stayed bridge that the present invention is provided is as shown in Figure 4.Tower end anchor It is fixedly mounted with and puts the upper king-post strut for installing Sarasota, design of its specific installation site according to stay cable of cable-stayed bridge in Cable-stayed Bridge Pylon is sat Mark determines.Its concrete structure includes that the tower end anchor slab 51, two ends for being provided with steel strand wires installing hole is born against in tower end anchor slab 51 and tower surface concrete on tower end support tube 55, the tower that is fixedly connected with tower end support tube 55 by beam-ends nut 54 End anchor plate 52 and the tower end anchoring clamping plate 53 installed in the end of the steel strand wires through tower end anchor slab.Wherein, steel is twisted Line 30 passes through tower end anchor slab 51, the noose of tower end anchoring clamping plate 53 to pass through tower end anchor slab 51 in steel strand wires 30 by steel strand wires installing hole One end, when steel strand wires receive draw-in, tower end anchoring clamping plate 53 is drawn in steel strand wires installing hole, and with the increase of pulling force And steel strand wires 30 are clamped, play a part of anchoring.Tower end support tube 55 supports tower end anchor slab 51, and by tower end nut 54 With tower end anchor plate 52, it is fixedly connected, because tower end anchor plate 52 has bigger diameter so as to play increase tower end anchoring dress The effect of the contact area and the concrete of Sarasota between is put, reduces the phenomenon of stress concentration, prevent Sarasota surface concrete from receiving To destruction.

Although having been illustrated with some exemplary embodiments of the present invention above, those skilled in the art will manage Solution, in the case of the principle or spirit without departing from the present invention, can make a change to these exemplary embodiments, of the invention Scope is limited by claim and its equivalent.

Claims (10)

1. the installation method of stay cable of cable-stayed bridge, it is characterised in that comprise the steps:
The anchor under mounting rail on girder sections;
Tower end anchor is installed on Sarasota;
By suspension cable outer sheath tube lift lifting and with predetermined angle laying, with the beam corresponding to the suspension cable under anchor Device and tower end anchor are collinearly arranged;
Steel strand wires are run through into one by one the outer sheath tube from tower end to beam-ends, and will respectively be anchored per the two ends of steel strand wires described in bar Under the beam on anchor and tower end anchor;
Integral tension is carried out to the suspension cable.
2. installation method according to claim 1, it is characterised in that anchor is arranged on cable-stayed bridge face under the beam Lower section, it include being provided with the beam-ends anchor slab of steel strand wires installing hole, two ends bear against it is mixed in the beam-ends anchor slab and beam surface Beam-ends support tube on solidifying soil, the beam-ends anchor plate being fixedly connected with the beam-ends support tube by beam-ends nut and it is arranged on Through the beam anchor intermediate plate of the end of the steel strand wires of the beam-ends anchor slab.
3. installation method according to claim 1, it is characterised in that tower end anchor is arranged on the upper tower of Sarasota Post, it includes being provided with the tower end anchor slab of steel strand wires installing hole, two ends and bears against in tower end anchor slab and Sarasota surface coagulation Tower end support tube on soil, the tower end anchor plate being fixedly connected with tower end support tube by tower end nut and installed in wearing Cross the tower end anchoring clamping plate of the end of the steel strand wires of tower end anchor slab.
4. installation method according to claim 1, it is characterised in that the outer sheath tube is by least two sections sleeve pipe splicing groups Into the welding step between two sections of described sleeve pipes is:
The end surfaces of two sections of sleeve pipes to be welded are planished and alignd;
Using the described sleeve pipe end surfaces after heater plate alignment;
Clamp the two sections of sleeve pipes after heating to cool down up to end surfaces, to complete welding.
5. installation method according to claim 4, it is characterised in that outer sheath tube lifting lifting described in wall scroll and with default The step of angle is laid includes:
The outer sheath tube that completes will be welded and lay in place in order to lift;
Auxiliary steel strand wires is penetrated and formed in the outer sheath tube lifting component, distinguish the beam fixing end and tower of the lifting component Fixing end;
The auxiliary steel strand wires are fixedly clamped with the outer sheath tube in the beam fixing end;
The lifting component is lifted using lifting appliance, after the tower fixing end reaches predetermined altitude, by the auxiliary steel The tower fixing end of twisted wire penetrates tower end anchor and fixes;
The beam fixing end of the auxiliary steel strand wires is drawn to the beam anchor and fixed;
Aiding in steel strand wires described in beam-ends tensioning, make that the outer sheath tube is straight and upright to be raised up to predetermined angle, complete outer described in wall scroll The lifting of protecting pipe.
6. installation method according to claim 1, it is characterised in that the predetermined angle is anchor and tower end under beam Angle between the line and bridge floor of anchor.
7. installation method according to claim 1, it is characterised in that described one by one to run through steel strand wires to beam-ends from tower end The outer sheath tube, and anchor and tower end anchor under the beam will be respectively anchored at per the two ends of steel strand wires described in bar On step in, single steel strand wires run through the outer sheath tube the step of include:
Install in bridge floor and put rope frame, steel strand pulling machine is installed in Sarasota tower top;
Single steel strand is drawn to the steel strand pulling machine from the rope frame of putting;
The mouth of pipe using the steel strand pulling machine by single steel strand from the outer sheath tube at tower end is through to oversheath The mouth of pipe of the pipe in beam-ends;
To run through the two ends of the single steel strand of the outer sheath tube respectively with tower end anchor and beam-ends Anchor anchoring is fixed;
Single steel strand described in tensioning reaches target stress value, completes the lashing of single steel strand.
8. installation method according to claim 7, it is characterised in that it is described by the single steel strand respectively with the tower In the fixed step of end anchor and the anchoring of beam anchor device, the anchors step of single steel strand includes:
The joint of steel strand wires end is connected with hauling rope;
The steel strand wires are made to pass through anchor using the hauling rope;
Anchoring clamping plate is being installed through the steel strand wires end of the anchor, the anchoring of single steel strand is completed.
9. installation method according to claim 1, it is characterised in that single steel strand described in the tensioning reaches mesh In the step of mark stress value, the stress value of single steel strand is read in the operation of the tensioning by pressure gauge, and by jack Tensioning repeatedly makes single steel strand reach target stress value.
10. installation method according to claim 1, it is characterised in that carry out described carrying out the suspension cable at tower end The operation of integral tension, its step includes:
Integral tension device is lifted to the stretching end of the suspension cable to be tensioned in Sarasota;
Using suspension cable to be tensioned described in integral tension device tensioning, until it reaches the target rope force value of suspension cable;
The integral tension device is removed, to complete the integral tension of suspension cable.
CN201710028387.5A 2017-01-16 2017-01-16 Mounting method of stayed cable of cable-stayed bridge CN106592441A (en)

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CN107815969A (en) * 2017-10-30 2018-03-20 重庆城建控股(集团)有限责任公司 A kind of filled-type epoxy coating strand drag-line construction technology
CN108221685A (en) * 2017-12-22 2018-06-29 安徽省交通控股集团有限公司 A kind of method for stretching for turning round drag-line in the same direction for cable-stayed bridge
CN108978485A (en) * 2018-08-24 2018-12-11 中交路桥建设有限公司 A kind of steel construction cable-stayed bridge anchor tie plate field installation process
CN109269704A (en) * 2018-10-18 2019-01-25 中铁大桥局集团有限公司 Cable force measurement system and method, the construction monitoring system and method for cable-stayed bridge
CN109778666A (en) * 2019-01-28 2019-05-21 中铁大桥局第七工程有限公司 Stay cable force sensing and temperature alignment control compensation device and construction method
CN110172919A (en) * 2019-05-29 2019-08-27 中交二公局东萌工程有限公司 A kind of low-pylon cable-stayed bridge is reeved method and system
CN110241736A (en) * 2019-06-17 2019-09-17 中交路桥华南工程有限公司 Suspension cable Fast Installation construction method
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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CN107815969A (en) * 2017-10-30 2018-03-20 重庆城建控股(集团)有限责任公司 A kind of filled-type epoxy coating strand drag-line construction technology
CN108221685A (en) * 2017-12-22 2018-06-29 安徽省交通控股集团有限公司 A kind of method for stretching for turning round drag-line in the same direction for cable-stayed bridge
CN108221685B (en) * 2017-12-22 2020-01-03 安徽省交通控股集团有限公司 Tensioning method for cable-stayed bridge equidirectional rotary stay cable
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CN109269704A (en) * 2018-10-18 2019-01-25 中铁大桥局集团有限公司 Cable force measurement system and method, the construction monitoring system and method for cable-stayed bridge
CN109778666A (en) * 2019-01-28 2019-05-21 中铁大桥局第七工程有限公司 Stay cable force sensing and temperature alignment control compensation device and construction method
CN109778666B (en) * 2019-01-28 2020-09-18 中铁大桥局第七工程有限公司 Stay cable force sensing and temperature linear control compensation device and construction method
CN110172919A (en) * 2019-05-29 2019-08-27 中交二公局东萌工程有限公司 A kind of low-pylon cable-stayed bridge is reeved method and system
CN110241736A (en) * 2019-06-17 2019-09-17 中交路桥华南工程有限公司 Suspension cable Fast Installation construction method
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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