CN105442459B - Large-Span Continuous girder span building up station rotator construction rotor system and construction method - Google Patents

Large-Span Continuous girder span building up station rotator construction rotor system and construction method Download PDF

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Publication number
CN105442459B
CN105442459B CN201511028596.7A CN201511028596A CN105442459B CN 105442459 B CN105442459 B CN 105442459B CN 201511028596 A CN201511028596 A CN 201511028596A CN 105442459 B CN105442459 B CN 105442459B
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CN
China
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rotary
cushion cap
annular
ball pivot
construction
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CN201511028596.7A
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Chinese (zh)
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CN105442459A (en
Inventor
吴信军
石鸿江
杜越
秦青山
聂树东
王亚胜
王军刚
李龙吉
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中铁二十局集团第一工程有限公司
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Publication of CN105442459A publication Critical patent/CN105442459A/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
    • E01D21/08Methods or apparatus specially adapted for erecting or assembling bridges by rotational movement of the bridge or bridge sections

Abstract

The invention discloses a kind of Large-Span Continuous girder span building up station rotator construction rotor system and construction method, the rotor system includes the swivel trailer system that lower support plate, top rotary table, the bridge rotating ball pivot being installed between lower support plate and top rotary table and drive top rotary table are rotated, lower support plate and top rotary table are reinforced concrete structure and the two is in horizontal layout, and swivel trailer system is attached with top rotary table;Top rotary table bottom is provided with multiple spikes, and the annular slide track for multiple spike slidings is provided with lower cushion cap;The construction method of the rotor system includes step:Lower cushion cap forming panel branch is vertical and bottom cushion cap concrete pouring construction, lower ball pivot and annular slide track are installed, top cushion cap concrete pouring construction, the lifting of upper ball pivot, spike are installed and top rotary table forming panel branch is vertical and concrete pouring construction.Reasonable in design and easy construction of the invention, using effect are good, and the easy construction by swing for completing large-span continuous beam of energy, swivel process is steady.

Description

Large-Span Continuous girder span building up station rotator construction rotor system and construction method

Technical field

The invention belongs to technical field of bridge construction, applied more particularly, to a kind of Large-Span Continuous girder span building up station swivel Work rotor system and construction method.

Background technology

China railway construction is in gold period, and large quantities of Lines for Passenger Transportation, inter-city passenger rail go into operation and put into succession Use.The special technical requirement of Line for Passenger Transportation, causes it to use usual friendship mouthful as common railway.The thing followed is to increase Line for Passenger Transportation across existing railway in operation main track, railway station, highway construction, the crossing construction cycle is long, to Business Line operation Influence is big, and potential safety hazard is protruded.

Bridge Rotation Construction Technique is the ball pivot and slideway and turntable structure for utilizing coefficient of friction very little, with simple equipment, will The huge bridge structure in both sides of completion is poured, integral-rotation is installed in place.Zhanyi County's grand bridge and Zhang Jiatian grand bridges are Shanghai elder brothers Special line for passenger trains Yunnan Section weight difficult point engineering.Zhanyi County grand bridge total length 1768.386m, bridge 27#~30# piers are with (72+128+ 72) rice continuous beam is with 25.3 ° of across running railway line Zhanyi County stations of the angle of cut, across 6 station tracks;Filled according to original position is outstanding, main span projection 105 meters are located at both wired tops, and the influence cycle is more long.And Zhang Jiatian grand bridge full-bridges 898.563m long, this bridge 15# pier~18# (60+100+60) the rice continuous beam set up on pier with the 40 ° of angle of cut across running railway line Gui-Kun Railway Malongs station, across 5 strands Road;Main span projects 66 meters and is located at both wired tops, and the influence cycle is more long.Wherein, the girder of above-mentioned two bridge is and is inclined cross both There are the In Reinforced Concrete Box Girder and its beam body of railway station for single box single chamber, And of Varying Depth, variable section structure, 0# blocks are (i.e. in girder Be supported in the beam section directly over bridge pier) height for 10m and its top bottom width degree be respectively 12m and 7.1m, other sections beam bodies Top bottom width degree is respectively 12m and 6.7m, a height of 5.5m of closure section box beam, and bridge cantilever section list T structures weight is 8600 tons.

During practice of construction, because on the elder brother's special line for passenger trains of Shanghai across both wired electric railways, station continuous beam quantity Many, risk source is numerous, and potential safety hazard is excessive, using rotator construction, can reduce the driving interference to railway, shortens to railway and car The influence time stood.But station swivel span is big, beam body weight weight, risk is high, and the duration is tight, and difficulty of construction is big.Therefore, to greatly across Construction of the research of degree continuous beam spanning existing railway station Construction Technology of Level Swing Method to later similar engineering has important guidance to anticipate Justice.

The content of the invention

The technical problems to be solved by the invention are for above-mentioned deficiency of the prior art, there is provided a kind of large span connects Continuous girder span building up station rotator construction rotor system, its simple structure, reasonable in design and easy construction, using effect are good, energy Simplicity completes the construction by swing of large-span continuous beam, and it is steady to turn process.

In order to solve the above technical problems, the technical solution adopted by the present invention is:A kind of Large-Span Continuous girder span building up station Rotator construction rotor system, it is characterised in that:Including lower support plate, directly over the lower support plate and drive is constructed The top rotary table for synchronizing rotation across buttress in large-span continuous beam, the bridge being installed between the lower support plate and top rotary table The swivel trailer system that beam Rotary ball hinge and drive top rotary table are rotated in the horizontal plane, the lower support plate and top rotary table are equal For reinforced concrete structure and the two is in horizontal layout, the swivel trailer system is attached with top rotary table;The bridge Rotary ball hinge includes lower ball pivot, the upper ball pivot being installed on directly over lower ball pivot, is connected between lower ball pivot and upper ball pivot middle part Pivot pin and the support frame being supported in immediately below lower ball pivot, the lower ball pivot and upper ball pivot are in horizontal layout, and pivot pin is in perpendicular Directly to laying;The lower support plate is lower cushion cap, and the support frame is embedded in lower cushion cap, and lower ball pivot is fixedly mounted on institute State on support frame;The lower ball pivot is installed on the middle part top of lower cushion cap, and upper ball pivot top is fastenedly connected with top rotary table bottom; Across the surface that buttress is supported on top rotary table and it is located at top rotary table in constructed large-span continuous beam;Constructed large span Continuous beam is the In Reinforced Concrete Box Girder across building up station, it is described in across buttress in vertically to lay and its by construct greatly Across the armored concrete buttress being supported in span continuous beam;

The top rotary table is circle, and the bottom of the top rotary table is provided with multiple spikes, and multiple spikes are circumferentially square To uniform laying, multiple spikes are concrete filled steel tube and its top is fastenedly connected with top rotary table;Multiple supports Pin is in vertically to laying;

The annular slide track for multiple spike slidings is provided with the lower cushion cap, the annular slide track is in horizontal layout And it is located at the underface of top rotary table;Multiple spikes are respectively positioned on annular slide track top;The annular slide track is located at lower ball pivot Outside;The annular steel skeleton being supported to annular slide track is embedded with the lower cushion cap, the annular slide track is fixed on described On annular steel skeleton;The lower cushion cap is divided into bottom cushion cap and the top cushion cap above the cushion cap of bottom, the support frame It is embedded in the cushion cap of top with the annular steel skeleton.

Above-mentioned Large-Span Continuous girder span building up station rotator construction rotor system, it is characterized in that:Each described spike bottom Gap between portion and annular slide track is 6mm~8mm.

Above-mentioned Large-Span Continuous girder span building up station rotator construction rotor system, it is characterized in that:Multiple spikes Structure snd size all same;The spike is by the first vertical steel pipe and pours in the concrete knot in first vertical steel pipe Structure, the external diameter of first vertical steel pipe is Φ 60mm~Φ 80mm and its wall thickness is 12mm~16mm;Each described spike bottom Equal pad has slide plate between portion and annular slide track.

Above-mentioned Large-Span Continuous girder span building up station rotator construction rotor system, it is characterized in that:The annular slide track bag The ring stainless steel plate for including annular splicing steel plate and being laid on annular splicing steel plate, the annular splicing Interal fixation is in described On annular steel skeleton, the lower cushion cap top is provided with the annular mounting groove installed for annular splicing steel plate;The annular splicing steel It is fastenedly connected by multigroup connecting bolt circumferentially laid between plate and the annular steel skeleton;The connecting bolt is Height adjustment bolt.

Above-mentioned Large-Span Continuous girder span building up station rotator construction rotor system, it is characterized in that:Also include to top rotary table The closing disk structure being fastenedly connected with the lower support plate, the closing disk structure be concrete structure and it include be located at upper turn Upper closing disk structure on the outside of disk and the lower closing disk structure between the upper closing disk structure and the lower support plate, the upper envelope The cross section of dish structure be annular and its poured with top rotary table and be integrated, the lateral wall of the lower closing disk structure for the face of cylinder and , with the upper closing disk structure in coaxial laying, the lower closing disk structure is poured with the lower support plate and is integrated and its external diameter is big for it Poured with the lower closing disk structure and be integrated in the external diameter of the upper closing disk structure, and the upper closing disk structure;The upper ball pivot, Lower ball pivot, annular slide track and multiple spikes are poured in the lower closing disk structure;Steel is provided with the closing disk structure Muscle cage, vertically connecting reinforcing bar by multiple tracks between the steel reinforcement cage in the steel reinforcement cage and closing disk structure of the lower cushion cap carries out fastening company Connect.

Above-mentioned Large-Span Continuous girder span building up station rotator construction rotor system, it is characterized in that:The swivel traction system System includes that two are installed in the draw-gear in lower cushion cap and two hauling ropes being connected with two draw-gears respectively, Two draw-gears are in parallel laying;Two draw-gears are respectively the front side for being laid in both sides before and after annular slide track Draw-gear and rear side draw-gear, the rear side draw-gear and the front side draw-gear are respectively positioned at a left side for annular slide track Right both sides;The front side draw-gear includes that the first hydraulic jack and branch stand on the first counter-force on the left of the first hydraulic jack Bearing, first reaction support is fixedly mounted in lower cushion cap and it is in vertically that first hydraulic jack is in laying Horizontal layout and itself and the perpendicular laying of the first reaction support;The rear side draw-gear includes the second hydraulic jack and Zhi Li The second reaction support on the right side of the second hydraulic jack, second reaction support is fixedly mounted in lower cushion cap and it is in perpendicular Directly to laying, second hydraulic jack is in horizontal layout and itself and the perpendicular laying of the second reaction support;Led described in twice Straw line is respectively the first hauling rope being connected with the first hydraulic jack and the second hauling rope being connected with the second hydraulic jack, The structure of hauling rope described in twice is identical and the two is divided into front side embedded section, middle part winding section and rear side connection from the front to the back Section;

It is embedded with the top rotary table for the first anchoring piece of the first hauling rope front end anchoring and is led for described second Second anchoring piece of straw line front end anchoring, the front side embedded section of first hauling rope is embedded in top rotary table and its front end anchors On the first anchoring piece, the middle part winding section of first hauling rope is wrapped on the lateral wall of top rotary table and rear side linkage section It is connected with the first hydraulic jack;The front side embedded section of second hauling rope is embedded in top rotary table and its front end is anchored at the On two anchoring pieces, the middle part of second hauling rope winding section is wrapped on the lateral wall of top rotary table and rear side linkage section and the Two hydraulic jacks are connected.

Above-mentioned Large-Span Continuous girder span building up station rotator construction rotor system, it is characterized in that:Hauling rope described in twice Front side embedded section be L-shaped and its middle part winding section be arc, the rear side linkage section of hauling rope described in twice is straight line Shape;Hauling rope is steel strand wires described in twice;Two draw-gears are centrosymmetric laying, and twice centered on pivot pin The hauling rope is centrosymmetric laying centered on pivot pin;First hydraulic jack, the second hydraulic jack and twice The hauling rope is laid in same level.

Above-mentioned Large-Span Continuous girder span building up station rotator construction rotor system, it is characterized in that:Also include that swivel is spacing Device;The positive stop and two tops that the rotating limiting device is embedded in lower cushion cap including two bottoms are embedded in Postive stop baffle in rotating disk, two postive stop baffles are in vertically to laying and the two is laid in same vertical plane with pivot pin On;Two postive stop baffles are respectively positioned on annular slide track top, and it is same vertical that two positive stops are laid in pivot pin On face;

Each described positive stop includes two pre-buried channel-section steels for being laid in annular slide track inner side both sides respectively, two institutes State pre-buried channel-section steel in vertically to lay and the two be laid on same vertical plane;It is provided with each described postive stop baffle Two groups respectively pre-buried channel-section steel described to two carry out spacing spacing steel plate, spacing steel plate described in every group includes inside and outside two energy The spacing steel plate in the notch of the pre-buried channel-section steel is installed in, spacing steel plate is laid in the same of postive stop baffle described in two groups Side;Each described spacing steel plate lays the perpendicular laying of postive stop baffle with it.

Above-mentioned Large-Span Continuous girder span building up station rotator construction rotor system, it is characterized in that:Also include being supported in Temporary support structure between rotating disk and annular slide track;The temporary support structure includes the along the circumferential direction uniform sand laid Case, the group number of the sandbox is identical with the quantity of spike and it is in be laid staggeredly with spike;The sandbox is in vertically to laying;Often Division board is provided between the individual sandbox top and top rotary table.

Meanwhile, it is simple, reasonable in design the invention also discloses a kind of method and step and realize that convenient, using effect is good, energy Ensure the construction method of the Large-Span Continuous girder span building up station rotator construction rotor system of rotor system installation accuracy, it is special Levy and be:The method is comprised the following steps:

Step 101, lower cushion cap forming panel branch are stood and bottom cushion cap concrete pouring construction:To for lower cushion cap of constructing Forming panel carries out Zhi Li, and steel reinforcement cage to being set in lower cushion cap carries out colligation;Concreting is carried out to bottom cushion cap again Construction, obtains the bottom cushion cap of construction molding;

Step 102, lower ball pivot and annular slide track are installed:The support first is installed on bottom cushion cap described in a step 101 Skeleton and the annular steel skeleton, then the ball pivot under fixed installation on the support frame, and it is solid on the annular steel skeleton Dingan County fills annular slide track;

Step 103, top cushion cap concrete pouring construction:Concrete pouring construction is carried out to top cushion cap, is constructed The lower cushion cap of shaping;

Step 104, the lifting of upper ball pivot:Pivot pin is installed in a step 102 on mounted lower ball pivot, then by upper ball pivot Directly over lifting to lower ball pivot, and upper ball pivot is attached with lower ball pivot by pivot pin;

Step 105, spike are installed:In a step 102 on the annular slide track of installation, multiple spikes are installed;

Step 106, top rotary table forming panel branch are stood and concrete pouring construction:In step 103 under construction molding Falsework is set up on cushion cap, then branch founds the forming panel for top rotary table of constructing on the falsework, and to top rotary table The steel reinforcement cage of interior setting carries out colligation;Afterwards, concrete pouring construction is carried out to top rotary table, the top rotary table of construction molding is obtained;

The top of multiple spikes is fastenedly connected with top rotary table and is integrated in step 105;Spike is carried out in step 105 During installation, need to also between each described spike bottom and annular slide track equal pad multiple correcting wedges, multiple wedge pieces Block is along the circumferential direction laid.

The present invention has advantages below compared with prior art:

1st, the rotor system simple structure that is used, reasonable in design and easy construction, using effect are good, can be to the company of construction Continuous beam carries out smooth rotation, and turns process safety, and swivel process is easily controllable.

2nd, the rotor system construction method for being used is simple, reasonable in design and easy construction, using effect are good, can effectively protect Card ball pivot installation accuracy, and it is relatively low to put into construction cost.

3rd, it is the swivel trailer system simple structure that is used, reasonable in design and install and easy to operate, using effect is good, energy Plane swivel process is effectively ensured steadily to be carried out, and turns process control simplicity, and can realize large-span continuous beam of constructing Accurate closure.

4th, annular slide track simple structure, easy construction and the using effect for being used are good, and are engaged with multiple spikes, Can ensure that large-span continuous beam swivel process is easy, steady.

5th, using effect is good and practical value is high, can swivel that is easy, being rapidly completed Large-Span Continuous girder span building up station Work progress, work progress safety;Also, plane swivel Process Design is rationally and swivel is convenient, can be easy, quick, safe, suitable Plane swivel process is completed sharply, and it is few to both wired interference, greatly reduce security risk.

Below by drawings and Examples, technical scheme is described in further detail.

Brief description of the drawings

Fig. 1 is the facade structures schematic diagram of rotor system of the present invention.

Fig. 2 is the flat of support plate, spike, temporary support structure, the first reaction support and the second reaction support under the present invention Face structural representation.

Fig. 3 is the planar structure schematic diagram of rotor system of the present invention.

Fig. 4 is the structural representation of postive stop baffle of the present invention and spacing steel plate.

Fig. 5 is the method flow block diagram when present invention constructs to rotor system.

Fig. 6 is the installation position schematic diagram of annular slide track of the present invention.

Fig. 7 is the structural representation of annular splicing steel plate of the invention.

Fig. 8 is the structural representation of present invention swivel trailer system.

Fig. 9 by using the present invention to construction large-span continuous beam carry out rotator construction when Construction State schematic diagram.

Description of reference numerals:

1-the second buttress;2-the three buttress;3-1-in across front side beam section;

3-2-midspan closing section;3-3-in across rear side beam section;4-1-end bay front side beam section;

4-2-end bay closure section;4-3-end bay rear side beam section;5-1-top rotary table;

5-16-closing disk structure;5-2-lower ball pivot;5-3-upper ball pivot;

5-4-pivot pin;5-41-lower cushion cap;5-5-spike;

5-51-bottom cushion cap;5-52-top cushion cap;5-6-sandbox;

5-7-annular slide track;5-71-annular splicing steel plate;5-72-ring stainless steel plate;

5-73-levelling steel plate;5-8-postive stop baffle;5-81-hauling rope;

5-9-spacing steel plate;5-10-the first hydraulic jack;5-11-the first reaction support;

5-12-the second hydraulic jack;5-13-the second reaction support;

5-14-the first anchoring piece;5-15-the second anchoring piece;

6-front side beam body;7-rear side beam body.

Specific embodiment

As shown in Figure 1, Figure 2, a kind of Large-Span Continuous girder span building up station rotator construction rotor system shown in Fig. 3 and Fig. 4, Including lower support plate, directly over the lower support plate and drive and synchronized across buttress in large-span continuous beam of constructing The top rotary table 5-1 of rotation, the bridge rotating ball pivot being installed between the lower support plate and top rotary table 5-1 and drive top rotary table 5- The 1 swivel trailer system for being rotated in the horizontal plane, the lower support plate and top rotary table 5-1 be reinforced concrete structure and The two is in horizontal layout, and the swivel trailer system is attached with top rotary table 5-1;The bridge rotating ball pivot includes lower ball Hinge 5-2, the upper ball pivot 5-3 being installed on directly over lower ball pivot 5-2, the axle being connected between lower ball pivot 5-2 and upper ball pivot 5-3 middle parts Pin 5-4 and the support frame being supported in immediately below lower ball pivot 5-2, the lower ball pivot 5-2 and upper ball pivot 5-3 are in horizontal layout, And pivot pin 5-4 is in vertically to laying;The lower support plate is lower cushion cap 5-41, and the support frame is embedded in lower cushion cap 5-41 It is interior, and lower ball pivot 5-2 is fixedly mounted on the support frame;The lower ball pivot 5-2 is installed on the middle part of lower cushion cap 5-41 Side, upper ball pivot 5-3 tops are fastenedly connected with top rotary table 5-1 bottoms;In constructed large-span continuous beam on buttress is supported in On rotating disk 5-1 and its surface for being located at top rotary table 5-1;Constructed large-span continuous beam is the reinforced concrete across building up station Native box beam, it is described in across buttress in vertically to lay and its by construction large-span continuous beam across the reinforcing bar being supported Concrete buttress.

The top rotary table 5-1 is circle, and the bottom of the top rotary table 5-1 is provided with multiple spike 5-5, multiple spikes 5-5 along the circumferential direction uniformly lays, and multiple spike 5-5 are concrete filled steel tube and its top is tight with top rotary table 5-1 It is solidly connected;Multiple spike 5-5 are in vertically to laying.

The annular slide track 5-7 for multiple spike 5-5 slidings, the annular slide track are provided with the lower cushion cap 5-41 5-7 is in horizontal layout and its underface for being located at top rotary table 5-1;Multiple spike 5-5 are respectively positioned on annular slide track 5-7 tops; The annular slide track 5-7 is located at lower ball pivot 5-2 outsides;It is embedded with the lower cushion cap 5-41 and annular slide track 5-7 is supported Annular steel skeleton, the annular slide track 5-7 is fixed on the annular steel skeleton;The lower cushion cap 5-41 points is bottom cushion cap The 5-51 and top cushion cap 5-52 above bottom cushion cap 5-51, the support frame and the annular steel skeleton are embedded in In top cushion cap 5-52.

As shown in figure 5, when being constructed to rotor system as shown in Figure 1, comprising the following steps:

Step 101, lower cushion cap forming panel branch are stood and bottom cushion cap concrete pouring construction:To for the lower cushion cap 5- that constructs 41 forming panel carries out Zhi Li, and steel reinforcement cage to being set in lower cushion cap 5-41 carries out colligation;Bottom cushion cap 5-51 is entered again Row concrete pouring construction, obtains the bottom cushion cap 5-51 of construction molding;

Step 102, lower ball pivot and annular slide track are installed:First installed on bottom cushion cap 5-51 described in a step 101 described Support frame and the annular steel skeleton, then the ball pivot 5-2 under fixed installation on the support frame, and in the annular reinforcing bar Annular slide track 5-7 is fixedly mounted on frame;

Step 103, top cushion cap concrete pouring construction:Concrete pouring construction is carried out to top cushion cap 5-52, is obtained The lower cushion cap 5-41 of construction molding;

Step 104, the lifting of upper ball pivot:Pivot pin 5-4 is installed on mounted lower ball pivot 5-2 in a step 102, then will Upper ball pivot 5-3 is lifted to lower ball pivot 5-2, and upper ball pivot 5-3 is attached with lower ball pivot 5-2 by pivot pin 5-4;

Step 105, spike are installed:In a step 102 on the annular slide track 5-7 of installation, multiple spikes are installed 5-5;

Step 106, top rotary table forming panel branch are stood and concrete pouring construction:In step 103 under construction molding Falsework is set up on cushion cap 5-41, then branch founds the forming panel for the top rotary table 5-1 that constructs on the falsework, and it is right The steel reinforcement cage set in top rotary table 5-1 carries out colligation;Afterwards, concrete pouring construction is carried out to top rotary table 5-1, is constructed into The top rotary table 5-1 of type;

The top of multiple spike 5-5 is fastenedly connected with top rotary table 5-1 and is integrated in step 105;Enter in step 105 When row spike is installed, need to also between each described spike 5-5 bottom and annular slide track 5-7 the multiple correcting wedges of equal pad, it is many The individual correcting wedge is along the circumferential direction laid.

In the present embodiment, the gap between each described spike 5-5 bottom and annular slide track 5-7 is 6mm~8mm.

In the present embodiment, equal pad has 12 wedge pieces between each described spike 5-5 bottom and annular slide track 5-7 Block.

During practice of construction, can according to specific needs, to being propped up between spike 5-5 bottoms and annular slide track 5-7 each described The quantity for padding correcting wedge is adjusted accordingly.

As shown in Fig. 2 in the present embodiment, the structure snd size all same of multiple spike 5-5;The spike 5-5 by First vertical steel pipe and pour in the concrete structure in first vertical steel pipe, the external diameter of first vertical steel pipe is Φ 60mm~Φ 80mm and its wall thickness are 12mm~16mm.There is equal pad between each described spike 5-5 bottom and annular slide track 5-7 Slide plate.Also, the concrete that the concrete structure is used is C50 slightly expanded concretes.

During practice of construction, the concrete structure of each spike 5-5 is poured with top rotary table 5-1 and is integrated.Cause And, multiple spike 5-5 tops are embedded in top rotary table 5-1 bottoms.Practice of construction is easy, and fixed.

In the present embodiment, the quantity of the spike 5-5 is 8.Also, 8 spike 5-5 are in uniform laying.

When being installed to spike 5-5, carrying out support top using multiple correcting wedges ensures spike 5-5 bottoms with annular Gap between slideway 5-7, prevents spike 5-5 from falling on annular slide track 5-7;By the correcting wedge before plane swivel construction Take down, reaffirm the gap between spike 5-5 bottoms and annular slide track 5-7, it is without exception after, in spike 5-5 and annular slide track The thick slide plates of 5mm are laid between 5-7.When plane swivel is constructed, when such as there is the change of beam-ends absolute altitude, spike 5-5 will fall described On slide plate, and smooth rotation is carried out by annular slide track 5-7 supports, beam body smooth rotation is ensured so as to ensure.

Also, the slide plate is polytetrafluoroethylene (PTFE) slide plate.

In the present embodiment, the correcting wedge is steel cushion block.

In the present embodiment, as shown in figure 1, each described spike 5-5 bottom is provided with and walks andante in horizontal layout.

Also, it is described walk andante thickness of slab be 3cm.

In the present embodiment, the annular slide track 5-7 includes annular splicing steel plate 5-71 and is laid in annular splicing steel plate 5- Ring stainless steel plate 5-72 on 71, the annular is spliced steel plate 5-71 and is fixed on the annular steel skeleton, the lower cushion cap 5-41 tops are provided with the annular mounting groove installed for annular splicing steel plate 5-71;Annular splicing steel plate 5-71 and the annular It is fastenedly connected by multigroup connecting bolt circumferentially laid between steel skeleton;The connecting bolt is height regulation spiral shell Bolt.

In the present embodiment, multigroup height adjustment bolt is laid on the support frame and it is in uniform laying.

Under being fixedly mounted on the support frame in step 102 during ball pivot 5-2, by multiple height adjustment bolts Height to lower ball pivot 5-2 is adjusted, and the lower ball pivot 5-2 is fixedly mounted on described by multiple height adjustment bolts On support frame.

During actual installation, the absolute altitude of lower ball pivot 5-2 is finely adjusted by multiple height adjustment bolts.

When being constructed to the rotor system using method as shown in Figure 5, method is simple, reasonable in design and construction is simple Just, using effect is good, and ball pivot installation accuracy can be effectively ensured.Because ball pivot installation accuracy is the most critical group of constructing swivel bridge Into part, the installation accuracy of ball pivot directly influences the quality of swivel and the safety of swivel process, hereby it is ensured that ball pivot installs essence Degree, can make swivel bridges steadily accurately be rotate in place in rotation process.

In the present embodiment, the width of the annular slide track 5-7 is 1.0m and its central radius is 3.95m, multiple supports Pin 5-5 is symmetrically and evenly distributed on annular slide track 5-7, and each spike 5-5 is slided in annular slide track 5-7 when plane swivel is constructed, Keep swivel structure steady.

As shown in figure 1, in the present embodiment, rotor system of the present invention also includes to top rotary table 5-1 and the lower support Disk is fastenedly connected closing disk structure 5-16, the closing disk structure 5-16 be concrete structure and it include being located at top rotary table 5- The upper closing disk structure and the lower closing disk structure between the upper closing disk structure and the lower support plate in 1 outside, the upper envelope The cross section of dish structure be annular and its poured with top rotary table 5-1 and be integrated, the lateral wall of the lower closing disk structure is cylinder Face and itself and the upper closing disk structure are in coaxial laying, the lower closing disk structure is poured with the lower support plate and is integrated and outside it Footpath is more than the external diameter of the upper closing disk structure, and the upper closing disk structure is poured with the lower closing disk structure and is integrated;On described Ball pivot 5-3, lower ball pivot 5-2, annular slide track 5-7 and multiple spike 5-5 are poured in the lower closing disk structure.The envelope Steel reinforcement cage is provided with dish structure 5-16, is led between the steel reinforcement cage in the steel reinforcement cage and closing disk structure 5-16 of the lower cushion cap 5-41 Cross multiple tracks and vertically connect reinforcing bar and be fastenedly connected.

When top cushion cap concrete pouring construction is carried out in the present embodiment, in step 103, need to also be in top cushion cap 5-52 Pre-buried multiple tracks vertically connects reinforcing bar.

In the present embodiment, there is a strata tetrafluoro upper surface of the lower ball pivot 5-2 to be tiled on concave spherical surface and its upper surface Ethene slide plate.The bottom surface of the upper ball pivot 5-3 is convex spherical, and the upper ball pivot 5-3 is located at the inside upper part of lower ball pivot 5-2.

In the present embodiment, the model LQJ85000 types of the bridge rotating ball pivot.The panel of the bridge rotating ball pivot Using Q345 steel plates, a diameter of 3600mm of ball pivot.The radius of the upper ball pivot 5-3 is 7992mm, and the radius of lower ball pivot 5-2 is 8000mm, a diameter of Φ 273mm of pivot pin set, pin diameter is Φ 230mm, and whole ball pivot is welded on the support frame.

During practice of construction, the lower cushion cap 5-41 is rectangle cushion cap.In the present embodiment, the length of the lower cushion cap 5-41 is 18.5m and it is highly 14.5m, the height of the bottom cushion cap 5-51 is 2.7m.

As shown in fig. 6, the annular slide track 5-7 includes annular splicing steel plate 5-71 and is laid in annular splicing steel plate 5-71 On ring stainless steel plate 5-72, the annular splicing steel plate 5-71 is fixed on the annular steel skeleton, the lower cushion cap 5- 41 tops are provided with the annular mounting groove installed for annular splicing steel plate 5-71;Annular splicing steel plate 5-71 and the annular steel It is fastenedly connected by multigroup connecting bolt circumferentially laid between skeleton.

During practice of construction, consolidated with welding manner between the ring stainless steel plate 5-72 and annular splicing steel plate 5-71 Fixed connection.Also, the apical side height of the apical side height less than lower cushion cap 5-41 of the annular splicing steel plate 5-71.

As shown in fig. 7, the annular splicing steel plate 5-71 is by the curved plate splicing of multi-blocked structure and size all same Into being fixedly connected with welding manner between the two neighboring curved plate.The thickness of slab of the curved plate be 2cm~ 3cm.In the present embodiment, the annular splicing steel plate 5-71 is spliced by the curved plate of eight block structures and size all same, Also, it is attached by two pieces of levelling steel plate 5-73 between the two neighboring curved plate.The ring stainless steel plate The thickness of slab of 5-72 is 3mm.

As shown in fig. 6, rotor system of the present invention also includes being supported between top rotary table 5-1 and annular slide track 5-7 Temporary support structure.

The temporary support structure includes the along the circumferential direction group number of uniform the sandbox 5-6, the sandbox 5-6 for laying and support The quantity of pin 5-5 is identical and it is in be laid staggeredly with spike 5-5;The sandbox 5-6 is in vertically to laying.In the present embodiment, institute Falsework is stated for bowl button support and it uses the temporary support structure to be supported.

When spike installation is carried out in the present embodiment, in step 105, the annular slide track of installation in a step 102 is also needed On 5-7, multigroup sandbox 5-6 is installed respectively.

In the present embodiment, the sandbox 5-6 is internal the second vertical steel pipe for filling sand.Also, second vertical steel The external diameter of pipe is Φ 45mm~Φ 50mm.

During practice of construction, the structure snd size all same of all sandbox 5-6 in the temporary support structure.

In the present embodiment, sandbox 5-6 described in every group includes two sand being laid between the two neighboring spike 5-5 Case 5-6.

Also, it is provided with division board between each described sandbox 5-6 top and top rotary table 5-1.So, plane is facilitated to turn Sandbox 5-6 is removed before body construction.

During practice of construction, multigroup sandbox 5-6 is placed on annular slide track 5-7 and it is before plane swivel construction As the main weight bearing area of T structures, the weight of superstructure is born.Using the filling of dry normal sand, dress in the sandbox 5-6 Good sandbox 5-6 is compacted using 400t jack, and the settling amount of institute's sand loading, enters when incompressible in observation sandbox 5-6 Row lifting.

As shown in figure 8, the swivel trailer system includes two draw-gears being installed on lower cushion cap 5-41 and two The individual hauling rope 5-81 being connected with two draw-gears respectively, two draw-gears are in parallel laying;Described in two Draw-gear is respectively the front side draw-gear and rear side draw-gear for being laid in both sides before and after annular slide track 5-7, the rear side Draw-gear and the front side draw-gear are respectively positioned at the left and right sides of annular slide track 5-7;The front side draw-gear includes First hydraulic jack 5-10 and branch stand on the first reaction support 5-11 on the left of the first hydraulic jack 5-10, and described first is anti- Power bearing 5-11 is fixedly mounted on lower cushion cap 5-41 and it is in vertically that, to laying, the first hydraulic jack 5-10 is in level Lay and itself and the first perpendicular layings of reaction support 5-11;The rear side draw-gear include the second hydraulic jack 5-12 and Branch stands on the second reaction support 5-13 on the right side of the second hydraulic jack 5-12, and the second reaction support 5-13 is fixedly mounted on On lower cushion cap 5-41 and its be in vertically to laying, the second hydraulic jack 5-12 be in horizontal layout and itself and the second counter-force branch The seat perpendicular layings of 5-13;Hauling rope 5-81 described in twice is respectively the first hauling rope being connected with the first hydraulic jack 5-10 And the second hauling rope being connected with the second hydraulic jack 5-12, the structure of hauling rope 5-81 described in twice it is identical and the two by It is divided into front side embedded section, middle part winding section and rear side linkage section after forward direction.

It is embedded with the top rotary table 5-1 for the first anchoring piece 5-14 of the first hauling rope front end anchoring and for described Second anchoring piece 5-15 of the second hauling rope front end anchoring, the front side embedded section of first hauling rope is embedded in top rotary table 5-1 Interior and its front end is anchored on the first anchoring piece 5-14, and the middle part winding section of first hauling rope is wrapped in top rotary table 5-1's On lateral wall and rear side linkage section is connected with the first hydraulic jack 5-10;The front side embedded section of second hauling rope is buried In top rotary table 5-1 and its front end is anchored on the second anchoring piece 5-15, the middle part winding section of second hauling rope is wrapped in On the lateral wall of top rotary table 5-1 and rear side linkage section is connected with the second hydraulic jack 5-12.

In the present embodiment, when carrying out concrete pouring construction to top rotary table 5-1 in step 106, also need to be led described in twice The front side embedded section of straw line 5-81 is embedded in top rotary table 5-1.

In the present embodiment, the front side embedded section of hauling rope 5-81 described in twice is L-shaped and its middle part winding section is arc Shape, the rear side linkage section of hauling rope 5-81 described in twice is linear.

Also, hauling rope 5-81 is steel strand wires described in twice.

During actual installation, two draw-gears are centrosymmetric laying centered on pivot pin 5-4, and are led described in twice Straw line 5-81 is centrosymmetric laying centered on pivot pin 5-4.

Also, the first hydraulic jack 5-10, the second hydraulic jack 5-12 and hauling rope 5-81 is equal described in twice It is laid in same level.

In the present embodiment, the first hydraulic jack 5-10 and the second hydraulic jack 5-12 are continuous jack.

In the present embodiment, the direction of windings of the hauling rope 5-81 on top rotary table 5-1 described in twice is constructed with plane swivel When top rotary table 5-1 rotation direction it is consistent.The hauling rope 5-81's anchors into depth not less than 4.5 meters, and termination uses P anchor anchors Gu.

As shown in the above, the two continuous jacks difference level, parallel, symmetrical in the swivel trailer system It is arranged in the lower support plate, the center line of each continuous jack must be with the ground of the cylindrical steel strands wound of top rotary table 5-1 Side is tangent, the center line level of pre-buried steel strand wires in the centerline height and top rotary table 5-1 of continuous jack, while requiring two The distance of continuous jack to top rotary table 5-1 is equal.So, plane swivel process can be effectively ensured steadily is carried out, and is turned Process control is easy, and the large-span continuous beam that can realize constructing accurate closure.

In the present embodiment, rotor system of the present invention also includes rotating limiting device;As shown in Fig. 2 the swivel limit The positive stop and two tops that position device is embedded in lower cushion cap 5-41 including two bottoms are embedded in top rotary table 5-1 Postive stop baffle 5-8, two postive stop baffle 5-8 in vertically to lay and the two be laid in pivot pin 5-4 it is same vertically On face;Two postive stop baffle 5-8 are respectively positioned on annular slide track 5-7 tops, and two positive stops are laid with pivot pin 5-4 On same vertical plane.

When top cushion cap concrete pouring construction is carried out in the present embodiment, in step 103, need to also be in top cushion cap 5-52 Positive stop described in pre-buried two groups.

In the present embodiment, the postive stop baffle 5-8 is steel plate.

In the present embodiment, each described positive stop includes that two are laid in annular slide track 5-7 inner sides both sides respectively Pre-buried channel-section steel, two pre-buried channel-section steels are in vertically to laying and the two is laid on same vertical plane.The built-in groove Steel is 30# channel-section steels, and embedment length is 35cm, and leakage length is 35cm, and perpendicularity is less than 1%.

Correspondingly, as shown in figure 4, be provided with each described postive stop baffle 5-8 two groups it is described to two pre-buried respectively Channel-section steel carries out spacing spacing steel plate 5-9, and spacing steel plate 5-9 described in every group includes inside and outside two can be installed in the built-in groove Spacing steel plate 5-9 in the notch of steel, spacing steel plate 5-9 is laid in the same side of postive stop baffle 5-8 described in two groups;Each institute State spacing steel plate 5-9 and lay the perpendicular layings of postive stop baffle 5-8 with it.

When actually used, the rotating limiting device can play it is accurate, effectively turn position-limiting action, and letter of constructing Just, input cost is relatively low.

In the present embodiment, as shown in figure 9, the rear and front end of constructed large-span continuous beam be respectively supported at the first buttress and On 4th buttress and wherein across rear and front end be respectively supported at former and later two it is described in across on buttress, during former and later two are described across Buttress is respectively on the second buttress 1 and the 3rd buttress 2, first buttress, the second buttress 1, the 3rd buttress 2 and described 4th Pier is along the vertical bridge of large-span continuous beam of constructing to being laid from front to back and it is armored concrete buttress, described second The buttress 2 of buttress 1 and the 3rd is respectively positioned at the left and right sides of the building up station;In constructed large-span continuous beam across by it is preceding extremely After be divided into across front side beam section 3-1, midspan closing section 3-2 and in across rear side beam section 3-3, two of large-span continuous beam of constructing End bay is divided into beam section 4-1, end bay closure section 4-2 and end bay rear side beam section 4-3 on front side of end bay from front to back;Constructed large span Two end bays of continuous beam be respectively in described front side edge across front and rear both sides across with back side edge across, it is described in across preceding Curb girder section 3-1 and the front side edge across end bay rear side beam section 4-3 compositions front side beam body 6, the front side beam body 6 is supported in second On buttress 1 and itself and the second buttress 1 composition front side T structure cantilever beams;In described across rear side beam section 3-3 and the back side edge across side Across front side beam section 4-1 compositions rear side beam body 7, the rear side beam body 7 is supported on the 3rd buttress 2 and it is constituted with the 3rd buttress 2 Rear side T structure cantilever beams.

During practice of construction, when carrying out rotator construction to constructed large-span continuous beam using rotor system as shown in Figure 1, mistake Journey is as follows:

Step one, rotor system construction:Constructed respectively a rotor system in the bottom of the second buttress 1 and the 3rd buttress 2;

The construction of step 2, the second buttress and the 3rd buttress:Constructed in step one on two rotor systems of completion The second buttress 1 and the 3rd buttress 2 are constructed respectively, the buttress 2 of second buttress 1 and the 3rd is supported in the swivel system On the top rotary table 5-1 of system, the buttress 2 of second buttress 1 and the 3rd supports top rotary table 5-1 to pour and is integrated with it;It is described Second buttress 1 and the 3rd buttress 2 are in vertically to laying and the two is located at the surfaces of two rotor systems respectively;

Step 3, front side beam body 6 are constructed with rear side beam body 7:Constructed in step 2 completion the second buttress 1 on construct institute Front side beam body 6 is stated, the front side T structure cantilever beams that construction is completed are obtained;Meanwhile, the 3rd buttress of completion of being constructed in step 2 Constructed on 2 the rear side beam body 7, obtain the rear side T structure cantilever beams that construction is completed;

In this step, after the completion of construction, the front side beam body 6 is with the rear side beam body 7 in parallel laying and the two difference Positioned at the left and right sides of the building up station;

Step 4, plane swivel construction:Using two rotor systems of completion of being constructed in step one, and by two The swivel trailer system of the rotor system, carries out plane to the front side T structures cantilever beam and the rear side T structures cantilever beam respectively Rotator construction, until the front side beam body 6 is horizontally rotated into design attitude with the rear side beam body 7;

Wherein, when plane swivel construction is carried out to the front side T structures cantilever beam, before the swivel trailer system drive is described Side T structures cantilever beam horizontally rotates around the central axis of the second buttress 1;Plane swivel is carried out to the rear side T structures cantilever beam During construction, the swivel trailer system drive rear side T structures cantilever beam carries out level and turns around the central axis of the 3rd buttress 2 It is dynamic.

In the present embodiment, before carrying out plane swivel construction in step 4, slided in each described spike 5-5 bottom and annular Pad fills slide plate between road 5-7, and all correcting wedges between each spike 5-5 bottoms and annular slide track 5-7 are taken out.

Also, after the completion of step 4 midplane rotator construction, also need to carry out concrete pouring construction to closing disk structure 5-16, And top rotary table 5-1 is fastenedly connected with the lower support plate by closing disk structure 5-16 is integrated.Also, to closing disk structure 5-16 Before carrying out concrete pouring construction, dabbing treatment is first carried out respectively with the lower support plate to top rotary table 5-1.

In the present embodiment, after the completion of step 4 midplane rotator construction, two to constructed large-span continuous beam are also needed The end bay carries out closing construction respectively;

Also, before carrying out closing construction to two end bays, first to first buttress, the 4th buttress, institute State front side edge across end bay front side beam section 4-1 and the back side edge across end bay rear side beam section 4-3 constructed, the front side edge Across end bay front side beam section 4-1 be supported on first buttress, the back side edge across end bay rear side beam section 4-3 be supported in institute State on the 4th buttress;

When front side edge to constructed large-span continuous beam steps into row closing construction, design is horizontally rotated in step 4 The front side beam body 6 and the front side edge of position across end bay front side beam section 4-1 between to the front side edge across end bay close Imperial section 4-2 is constructed, complete the front side edge across closing construction process;

When back side edge to constructed large-span continuous beam steps into row closing construction, design is horizontally rotated in step 4 The rear side beam body 7 and the back side edge of position across end bay rear side beam section 4-3 between to the back side edge across end bay close Imperial section 4-2 is constructed, complete the back side edge across closing construction process.

After two end bays of constructed large-span continuous beam join the two sections of a bridge, etc, design attitude is horizontally rotated in step 4 The front side beam body 6 and the rear side beam body 7 between across the closure section 3-2 of centering constructed, completion construct large span connect In continuous beam across closing construction process.

In the present embodiment, the bridge rotating ball pivot also includes the friction being installed between lower ball pivot 5-2 and upper ball pivot 5-3 It is secondary.

During practice of construction, large-span continuous beam of constructing and across the angle between building up station be 20 °~ 45 °, thus constructed large-span continuous beam is inclined cross building up station.In the present embodiment, the building up station is existing railway station.

In the present embodiment, the span of large-span continuous beam of constructing is more than 150m.

In the present embodiment, the front side T structures cantilever beam and the rear side T structures cantilever beam abbreviation T structures, and it is T-shaped Dun Liang Consolidation construction.

In the present embodiment, after the completion of being constructed in step 3, the front side beam body 6 and the rear side beam body 7 with it is described both It is in parallel laying to have station.

In the present embodiment, for swivel process is easy and swivel angle is accurate, it is labeled with using on the lateral wall of top rotary table 5-1 In the dial of observation rotational angle.

During practice of construction, paper (the i.e. described quarter with distance scale and angle index is puted up in the side of top rotary table 5-1 Scale), in the lower pre-buried upward pointer in support plate top, and pointer is embedded in the position after rotator construction terminates, while The side suspension plumb bob of top rotary table 5-1, is suspended on swivel original position;After pointer overlaps with plumb bob, plane swivel construction knot Beam.

In the present embodiment, when being constructed to the second buttress 1 and the 3rd buttress 2 in step 2, using work of routinely constructing Skill uses large-scale steel form, pump concrete to pour.

In the present embodiment, the front side beam body 6 and the rear side beam body 7 are divided into front side cantilever beam section, pier from front to back Back timber section and rear side cantilever beam section;The pier top beam section of the front side beam body 6 is located at the surface of the second buttress 1 and it is supported in the On two buttresses 1, the pier top beam section of the rear side beam body 7 is located at the surface of the 3rd buttress 2 and it is supported on the 3rd buttress 2;

During the front side beam body 6 of being constructed on the second buttress 1 in step 3, first using Support Method to the front side beam body 6 Pier top beam section constructed, then using Hanging Basket to the front side cantilever beam section and rear side cantilever beam section of the front side beam body 6 difference Constructed;During the rear side beam body 7 of being constructed on the 3rd buttress 2, first using Support Method to the pier top beam of the rear side beam body 7 Duan Jinhang constructs, then the front side cantilever beam section and rear side cantilever beam section of the rear side beam body 7 are constructed respectively using Hanging Basket.

Wherein, Support Method is a kind of construction method for being common in cast-in-situ bridge construction at present, is specifically taken by between certain Every the method that the, scaffold setting up and play a supportive role of gathering carries out bridge construction.Support Method is also referred to as bridge support cast-in-place method, just It is after the completion of bridge substructure construction, full framing to be set up at continuous beam bridge location, support is eliminated non-resilient by precompressed After deformation, permanent bearing is installed, anchoring temporarily, installation form, reinforcing bar and pre-stress system are set, according to design requirement, symmetrically Cast-in-place segmentation beam section, after each symmetrical Cast-in-situ Beam body concrete reaches design requirement, form removal carries out prestressed stretch-draw mud jacking Construction;Constructed across closure segment subsequently into the construction of next section cast-in-place, in finally carrying out and complete system transform, striking.

In the present embodiment, the pier top beam section to the front side beam body 6 and the rear side beam body 7 carries out construction city, uses Conventional Support Method is constructed;Before construction, permanent branch is first installed in the pier top of the second buttress 1 and the 3rd buttress 2 respectively Seat, the permanent bearing is TJGZ spherical bearings.Pier top beam section to the front side beam body 6 and the rear side beam body 7 carries out coagulation Before soil is poured, first prestressed pipeline is needed.Pier top beam section to the front side beam body 6 and the rear side beam body 7 is mixed When solidifying soil is poured, bottom web, base plate, web and top board are poured respectively respectively to rear by elder generation.

After the completion of the pier top beam section concreting of the front side beam body 6 and the rear side beam body 7, prestress pipe is carried out Mud jacking and prestressed stretch-draw, carry out sealing off and covering anchorage after the completion of tensioning.

In the present embodiment, the front side cantilever beam section and rear side cantilever beam section of the front side beam body 6 are applied using Hanging Basket Man-hour and before being constructed to the front side cantilever beam section and rear side cantilever beam section of the rear side beam body 7 using Hanging Basket, need elder generation Safeguard structure is installed on the Hanging Basket for being used.

In the present embodiment, to the front side edge across end bay closure section 4-2 and the back side edge across end bay closure section 4-2 When being constructed, cast-in-place construction is carried out using Support Method;When across the closure section 3-2 of centering is constructed, applied using Hanging Basket Work.

Herein, the Support Method for being used is conventional bridge support cast-in-place method.

In the present embodiment, before carrying out plane swivel construction in step 4, incline to reduce the beam body caused by unbalanced moments Frictional resistance between skew wind danger, reduction spike 5-5 and annular slide track 5-7;Simultaneously for prevent side, in across baseboard prestress configuration The slightly influence of the other factorses such as deviation and wind load, causes T structures uneven, also needs to distinguish front side beam body 6 with rear side beam body 7 Counterweight is carried out, the specifically pier top beam section in front side beam body 6 and rear side beam body 7 is respectively provided with counterweight.Herein, counterweight uses 10t Sand pocket.

In the present embodiment, before carrying out plane swivel construction in step 4, preliminary operation is first carried out, be a weight for turning work Want link, the whether clear and definite job duty and concerted reaction ability of oneself of main purpose checked operation personnel;Test is continuous very heavy Service behaviour after the loading of top, and check oil pump control parameter and inertia braking distance.Strict control beam-ends stroke speed during preliminary operation Degree, angular speed is not more than 0.02rad/min and pontic cantilever end linear velocity no more than 1.5m/min.

When plane swivel construction is carried out in step 4, uniform rotation, slowly uniform rotation, end of main beam water after the starting of T structures Within 0.9188m/min, survey crew observes axis off normal, beam-ends position elevation to horizontal line speed control repeatedly in rotation process Change.Treat that the flat turn of T structures is slowed down (at design attitude arc length about 1m) substantially in place, reduce flat turn speed, away from design arc length positions At 0.5m, take crawl to operate, and coordinate beam end displacement when confirming that crawl is operated with survey crew.The use accurate in place of swivel Upper and lower triple controls, one is the rotational angle of the top box beam when the lower support plate controls to turn by dial;Two be on Be erected at for total powerstation on end bay Cast-in-Situ Segment by portion's control during swivel, accurate measurement swivel beam-ends centerline, inverse case Beam turns angle;Three is that the range finding rope inverse swivel angle for being wrapped in top rotary table 5-1 is carried according to continuous jack.

After beam body rotate in place, because beam body both sides weight is not definitely equal, causes beam body termination absolute altitude and position and set Meter is not corresponded, and after rotateing in place, attitude tune is carried out using jack to the absolute altitude and elevation of beam body termination according to measurement data It is whole, it is ensured that closure segment precision is in allowable error scope.

In the present embodiment, after the completion of step 4 midplane rotator construction, also need to enter row constraint to T structures and fix, mainly take Following measures enter row constraint to structure to be fixed:

1. carry out pad to spike 5-5 using correcting wedge to fix, and spike 5-5 is welded with the positive stop with electric welding Tie in succession, be welded and fixed comprehensively together with annular slide track 5-7, it is ensured that T structures will not shift.

2. after rotating in place, the termination of T structures and end bay closure section termination are carried out into temporary consolidation using type steel support post.

3. the space of spike 5-5 bottoms is used into high-strength grout, is clogged closely knit.

4. closing disk concrete pouring construction is carried out in time, and turntable structure sealing is completed with the most short time.

In the present embodiment, after the completion of midspan closing construction, Program for structural Transformation is completed;Actually carry out Program for structural Transformation When, to ensure the stabilization of construction stage, end bay first closes up, and release fine strain of millet pier anchoring, structure becomes single-cantilever shape by double-cantilever state State, last span centre closes up, into continuous beam stress.

The above, is only presently preferred embodiments of the present invention, and not the present invention is imposed any restrictions, every according to the present invention Any simple modification, change and equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention In the protection domain of art scheme.

Claims (8)

1. a kind of Large-Span Continuous girder span building up station rotator construction rotor system, it is characterised in that:Including lower support plate, position Top rotary table (the 5- of rotation is synchronized across buttress directly over the lower support plate and in driving large-span continuous beam of constructing 1) the bridge rotating ball pivot, being installed between the lower support plate and top rotary table (5-1) and drive top rotary table (5-1) are in horizontal plane On the swivel trailer system that is rotated, the lower support plate and top rotary table (5-1) is reinforced concrete structure and the two is equal In horizontal layout, the swivel trailer system is attached with top rotary table (5-1);The bridge rotating ball pivot includes lower ball pivot (5-2), the upper ball pivot (5-3) being installed on directly over lower ball pivot (5-2), it is connected to lower ball pivot (5-2) and upper ball pivot (5-3) middle part Between pivot pin (5-4) and the support frame that is supported in immediately below lower ball pivot (5-2), the lower ball pivot (5-2) and upper ball pivot (5- 3) it is in horizontal layout, and pivot pin (5-4) is in vertically to laying;The lower support plate is lower cushion cap (5-41), the support rib Frame is embedded in lower cushion cap (5-41), and lower ball pivot (5-2) is fixedly mounted on the support frame;The lower ball pivot (5-2) The middle part top of lower cushion cap (5-41) is installed on, upper ball pivot (5-3) top is fastenedly connected with top rotary table (5-1) bottom;Constructed Across the surface that buttress is supported on top rotary table (5-1) and it is located at top rotary table (5-1) in large-span continuous beam;Construct big Span continuous beam is the In Reinforced Concrete Box Girder across building up station, it is described in across buttress in vertically to lay and its by being applied Across the armored concrete buttress being supported in work large-span continuous beam;
The top rotary table (5-1) is circle, and the bottom of the top rotary table (5-1) is provided with multiple spikes (5-5), multiple supports Pin (5-5) is along the circumferential direction uniform to be laid, and multiple spikes (5-5) are concrete filled steel tube and its top and top rotary table (5-1) is fastenedly connected;Multiple spikes (5-5) are in vertically to laying;
The annular slide track (5-7) for multiple spike (5-5) slidings is provided with the lower cushion cap (5-41), the annular is sliding Road (5-7) is in horizontal layout and its underface for being located at top rotary table (5-1);Multiple spikes (5-5) are respectively positioned on annular slide track (5-7) top;The annular slide track (5-7) is located at lower ball pivot (5-2) outside;It is embedded with to annular in the lower cushion cap (5-41) The annular steel skeleton that slideway (5-7) is supported, the annular slide track (5-7) is fixed on the annular steel skeleton;Under described Cushion cap (5-41) is divided into bottom cushion cap (5-51) and the top cushion cap (5-52) above bottom cushion cap (5-51), the support Skeleton and the annular steel skeleton are embedded in top cushion cap (5-52);
Also include rotating limiting device;It is spacing in lower cushion cap (5-41) that the rotating limiting device includes that two bottoms are embedded in Block and two top are embedded in the postive stop baffle (5-8) in top rotary table (5-1), and two postive stop baffles (5-8) are in Vertically to lay and the two be laid on same vertical plane with pivot pin (5-4);Two postive stop baffles (5-8) are respectively positioned on ring Shape slideway (5-7) top, two positive stops are laid on same vertical plane with pivot pin (5-4);
Each described positive stop includes two pre-buried channel-section steels for being laid in annular slide track (5-7) inner side both sides respectively, two The pre-buried channel-section steel in vertically to lay and the two be laid on same vertical plane;On each described postive stop baffle (5-8) Be provided with two groups respectively pre-buried channel-section steel described to two carry out spacing spacing steel plate (5-9), spacing steel plate (5- described in every group 9) inside and outside two spacing steel plates (5-9) that can be installed in the notch of the pre-buried channel-section steel, spacing steel plate described in two groups are included (5-9) is laid in the same side of postive stop baffle (5-8);Each described spacing steel plate (5-9) lays postive stop baffle with it (5-8) perpendicular laying;
Also include the temporary support structure being supported between top rotary table (5-1) and annular slide track (5-7);The temporary support structure Including the along the circumferential direction uniform sandbox (5-6) laid, the group number of the sandbox (5-6) it is identical with the quantity of spike (5-5) and It is in be laid staggeredly with spike (5-5);The sandbox (5-6) is in vertically to laying;Each described sandbox (5-6) top with upper turn Division board is provided between disk (5-1).
2. according to the Large-Span Continuous girder span building up station rotator construction rotor system described in claim 1, it is characterised in that: Gap between each described spike (5-5) bottom and annular slide track (5-7) is 6mm~8mm.
3., according to the Large-Span Continuous girder span building up station rotator construction rotor system described in claim 1 or 2, its feature exists In:The structure snd size all same of multiple spikes (5-5);The spike (5-5) is by the first vertical steel pipe and pours in institute The concrete structure in the first vertical steel pipe is stated, the external diameter of first vertical steel pipe is Φ 60mm~Φ 80mm and its wall thickness is 12mm~16mm;Equal pad has slide plate between each described spike (5-5) bottom and annular slide track (5-7).
4., according to the Large-Span Continuous girder span building up station rotator construction rotor system described in claim 1 or 2, its feature exists In:The annular slide track (5-7) includes annular splicing steel plate (5-71) and the annular being laid in annular splicing steel plate (5-71) Stainless steel plate (5-72), annular splicing steel plate (5-71) is fixed on the annular steel skeleton, the lower cushion cap (5-41) Top is provided with the annular mounting groove installed for annular splicing steel plate (5-71);Annular splicing steel plate (5-71) and the annular It is fastenedly connected by multigroup connecting bolt circumferentially laid between steel skeleton;The connecting bolt is height regulation spiral shell Bolt.
5., according to the Large-Span Continuous girder span building up station rotator construction rotor system described in claim 1 or 2, its feature exists In:Also include the closing disk structure (5-16) being fastenedly connected with the lower support plate to top rotary table (5-1), the closing disk structure (5-16) be concrete structure and it include be located at top rotary table (5-1) on the outside of upper closing disk structure and positioned at the upper closing disk structure Lower closing disk structure between the lower support plate, the cross section of the upper closing disk structure is annular and itself and top rotary table (5- 1) pour and be integrated, the lateral wall of the lower closing disk structure is that the face of cylinder and itself and the upper closing disk structure are laid in coaxial, institute State lower closing disk structure poured with the lower support plate be integrated and its external diameter more than the upper closing disk structure external diameter, and it is described on Closing disk structure is poured with the lower closing disk structure and is integrated;The upper ball pivot (5-3), lower ball pivot (5-2), annular slide track (5-7) Poured in the lower closing disk structure with multiple spikes (5-5);Steel reinforcement cage is provided with the closing disk structure (5-16), Reinforcing bar is vertically connected between the steel reinforcement cage of the lower cushion cap (5-41) and the steel reinforcement cage in closing disk structure (5-16) by multiple tracks to enter Row is fastenedly connected.
6., according to the Large-Span Continuous girder span building up station rotator construction rotor system described in claim 1 or 2, its feature exists In:The swivel trailer system include two draw-gears being installed in lower cushion cap (5-41) and two respectively with two institutes The hauling rope (5-81) of draw-gear connection is stated, two draw-gears are in parallel laying;Two draw-gear difference To be laid in the front side draw-gear and rear side draw-gear of both sides before and after annular slide track (5-7), the rear side draw-gear and The front side draw-gear is respectively positioned at the left and right sides of annular slide track (5-7);The front side draw-gear includes the first hydraulic pressure Jack (5-10) and branch stand on the first reaction support (5-11) on the left of the first hydraulic jack (5-10), first counter-force Bearing (5-11) is fixedly mounted in lower cushion cap (5-41) and it is in vertically that first hydraulic jack (5-10) is in laying Horizontal layout and itself and the first reaction support (5-11) perpendicular laying;The rear side draw-gear includes the second hydraulic jack (5-12) and branch stand on the second reaction support (5-13) on the right side of the second hydraulic jack (5-12), second reaction support (5-13) is fixedly mounted in lower cushion cap (5-41) and it is in vertically that, to laying, second hydraulic jack (5-12) is in level Lay and itself and the second reaction support (5-13) perpendicular laying;Hauling rope described in twice (5-81) is respectively and the first hydraulic pressure thousand First hauling rope and the second hauling rope for being connected with the second hydraulic jack (5-12) of jin top (5-10) connection, lead described in twice The structure of straw line (5-81) is identical and the two is divided into front side embedded section, middle part winding section and rear side linkage section from the front to the back;
It is embedded with the top rotary table (5-1) for first anchoring piece (5-14) of the first hauling rope front end anchoring and for described Second anchoring piece (5-15) of the second hauling rope front end anchoring, the front side embedded section of first hauling rope is embedded in top rotary table (5-1) is interior and its front end is anchored on the first anchoring piece (5-14), and the middle part winding section of first hauling rope is wrapped in and turns On the lateral wall of disk (5-1) and rear side linkage section is connected with the first hydraulic jack (5-10);Before second hauling rope Side embedded section is embedded in top rotary table (5-1) and its front end is anchored on the second anchoring piece (5-15), second hauling rope Middle part winding section is wrapped on the lateral wall of top rotary table (5-1) and rear side linkage section and the second hydraulic jack (5-12) connect Connect.
7. according to the Large-Span Continuous girder span building up station rotator construction rotor system described in claim 6, it is characterised in that: The front side embedded section of hauling rope described in twice (5-81) is L-shaped and its middle part winding section is arc, hauling rope described in twice The rear side linkage section of (5-81) is linear;Hauling rope described in twice (5-81) is steel strand wires;Two draw-gears Be centrosymmetric laying centered on pivot pin (5-4), and hauling rope described in twice (5-81) is in center centered on pivot pin (5-4) It is symmetrical to lay;First hydraulic jack (5-10), the second hydraulic jack (5-12) and hauling rope (5-81) described in twice It is laid in same level.
8. a kind of method constructed to rotor system as claimed in claim 1, it is characterised in that:The method includes following step Suddenly:
Step 101, lower cushion cap forming panel branch are stood and bottom cushion cap concrete pouring construction:To for lower cushion cap of constructing (5-41) Forming panel carry out Zhi Li, and steel reinforcement cage to being set in lower cushion cap (5-41) carries out colligation;Again to bottom cushion cap (5-51) Concrete pouring construction is carried out, the bottom cushion cap (5-51) of construction molding is obtained;
Step 102, lower ball pivot and annular slide track are installed:The branch first is installed on bottom cushion cap (5-51) described in a step 101 Support bone frame and the annular steel skeleton, then the ball pivot (5-2) under fixed installation on the support frame, and in the annular reinforcing bar Annular slide track (5-7) is fixedly mounted on frame;
Step 103, top cushion cap concrete pouring construction:Concrete pouring construction is carried out to top cushion cap (5-52), is applied The lower cushion cap (5-41) of work shaping;
Step 104, the lifting of upper ball pivot:Pivot pin (5-4) is installed on mounted lower ball pivot (5-2) in a step 102, then will Directly over upper ball pivot (5-3) lifting to lower ball pivot (5-2), and by pivot pin (5-4) to upper ball pivot (5-3) and lower ball pivot (5-2) It is attached;
Step 105, spike are installed:In a step 102 on the annular slide track (5-7) of installation, multiple spike (5- are installed 5);
Step 106, top rotary table forming panel branch are stood and concrete pouring construction:The lower cushion cap of construction molding in step 103 Falsework is set up on (5-41), then branch founds the forming panel for top rotary table of constructing (5-1) on the falsework, and it is right The steel reinforcement cage set in top rotary table (5-1) carries out colligation;Afterwards, concrete pouring construction is carried out to top rotary table (5-1), is applied The top rotary table (5-1) of work shaping;
The top of multiple spikes (5-5) is fastenedly connected with top rotary table (5-1) and is integrated in step 105;Enter in step 105 When row spike is installed, need to also between each described spike (5-5) bottom and annular slide track (5-7) the multiple wedge pieces of equal pad Block, multiple correcting wedges are along the circumferential direction laid.
CN201511028596.7A 2015-12-31 2015-12-31 Large-Span Continuous girder span building up station rotator construction rotor system and construction method CN105442459B (en)

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