CN101787677B - Method for erecting girder of suspension bridge by double-hoisting hydraulic NC (numerical control) cable crane - Google Patents
Method for erecting girder of suspension bridge by double-hoisting hydraulic NC (numerical control) cable crane Download PDFInfo
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- CN101787677B CN101787677B CN 200910113846 CN200910113846A CN101787677B CN 101787677 B CN101787677 B CN 101787677B CN 200910113846 CN200910113846 CN 200910113846 CN 200910113846 A CN200910113846 A CN 200910113846A CN 101787677 B CN101787677 B CN 101787677B
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Abstract
The invention discloses a method for erecting a girder of a suspension bridge by a double-hoisting hydraulic NC (numerical control) cable crane. The invention is characterized in that: two sets of loaded-walking hydraulic NC cable cranes and a control system are used in a combined manner to sequentially hoist a section of girder of the suspension bridge at the same time so as to erect the girder of the suspension bridge; the two sets of loaded-walking hydraulic NC cable cranes are loaded to carry the girder to complete the erection when the girder of the suspension bridge is erected from the tower end to the downslope part at the midspan; the cable cranes are loaded to carry the girder to complete the erection of a gentle section when the section of the girder is erected from the midspan to the two banks; and the two loaded-walking hydraulic NC cable cranes automatically swing to carry the girder to complete the erection when the cable crane walks to the upslope sidespan with high gradient. The method for erecting the girder of the suspension bridge by the double-hoisting hydraulic NC cable crane is applicable to mountainous areas, shoals and other places where the bridge erecting construction requirement for horizontally carrying the girder of the suspension bridge to the designated erecting position cannot be met.
Description
Technical field:
The present invention relates to a kind of large-span suspension bridge mechanized construction equipment and job practices, particularly a kind of job practices that can solve the girder of suspension bridge spanning equipment of suspension bridge transverse truss girder section level transportation and be used for the erecting suspension bridge girder.
Background technology:
Striding the cable loop wheel machine is " the special-purpose spanning equipment of girder of suspension bridge "; Become the most safe and reliable equipment of setting a roof beam in place through constantly improving over 100 years and improving, the separate unit lifting power of striding the cable loop wheel machine has at present reached 500t, and traditional girder of suspension bridge erection method is striden the cable loop wheel machine for adopting the unit list to hang hydraulic pressure; It only is vertical lifting that this unit list hangs the function of striding the cable loop wheel machine; The transportation of the level of suspension bridge transverse truss girder section mainly is through rivers straits shipping, and end bay then adopts rope traction to swing and moves, and promptly at first makes to stride the cable loop wheel machine zero load appropriate location of walking; Utilize boats and ships to transport the beam section then, let again and set up girder after striding the vertical lifting beam section of cable loop wheel machine to its below.
Along with suspension cable spanning footpath is more and more big, use the unit list to hang hydraulic pressure and stride the construction party rule that the cable loop wheel machine sets up girder of suspension bridge and exist inconvenience: 1, short, the total hop count of lifting sections length is many, long in time limit; Poor work stability when 2, adopting separate unit loop wheel machine hanging beam, reversing and lateral run-out appears in girder easily, if meet in the hoisting process that strong wind attacks then the safety of beam section will be difficult to guarantee; 3, accommodation is narrow; Can not solution level transportation suspension bridge transverse truss girder section arrive the needs of the bridge formation construction of specifying the main beam supporting position: along with the continuous development of Chinese transportation cause; It is with a varied topography that plan builds a bridge; The suspension bridge that particularly sets up on mountain area, shoal and other places, the level transportation (that is: suspension bridge transverse truss girder section being transported to the below that plan is set up bridge) of suspension bridge transverse truss girder section is difficulty very, has a strong impact on main beam supporting.
Summary of the invention:
The object of the present invention is to provide and a kind ofly use that two-shipper is two to be hung hydraulic numerical control and stride the method that the cable loop wheel machine sets up girder of suspension bridge; This two-shipper is two to hang that hydraulic numerical control strides that cable loop wheel machine lifting power is big, high efficiency, good stability, and two-shipper is two to hang that hydraulic numerical control strides that the method that the cable loop wheel machine sets up girder of suspension bridge can adapt in the mountain area, shoal and some other needs of can not solution level transportation suspension bridge steel truss girder section constructing to the bridge formation of appointment main beam supporting position.
The technical scheme that solves the problems of the technologies described above is: a kind ofly use that two-shipper is two to be hung hydraulic numerical control and stride the method that the cable loop wheel machine sets up girder of suspension bridge; It is that employing is overlapped loading-and-walking type hydraulic numerical control deck erection gantries and controlled the method that system combined operation lifts the erecting suspension bridge girder of one section suspension bridge steel truss girder section simultaneously successively by two, sets up when girder of suspension bridge adopts two cover loading-and-walking type hydraulic numerical control deck erection gantry two-shippers heavy burdens to transport trusses when the span centre descending sets up from the tower end; When the beam section from span centre when set up two sides: mild section adopts strides the operation of cable loop wheel machine weight belt trusses and sets up, and walks to the bigger upward slope end bay of the gradient, then adopts two cover loading-and-walking type hydraulic numerical control deck erection gantry two-shippers to swing the operation of shipper pole trusses voluntarily to set up when striding the cable loop wheel machine.
Described every cover loading-and-walking type hydraulic numerical control deck erection gantry comprises the transverse truss girder, is installed in two cover walking heavy burden running gears, hydraulic lifting device and suspender shoulder pole four parts at transverse truss girder two ends;
Described transverse truss girder is to connect two-door font heavy burden beam respectively by the truss two ends that H shaped steel welds to constitute, and the space of truss is useful on the working platform of laying take-up reel, hydraulic power unit and master station and constructor; The top of two-door font heavy burden beam is provided with bearing pin;
Every cover walking heavy burden running gear is made up of guide rail, walking mechanism steel framework, m platform traction jack, 4n platform load conversion jack, tie-strut, walking roller support and P platform guide rail walking jack, adopts bearing pin to connect between each parts; The guide rail bottom surface is provided with and is used for cooperating, riding over main push-towing rope three semi arch feets on the main push-towing rope, and walking mechanism steel framework top is provided with bearing pin axis hole, bottom, two ends movingly and respectively is provided with a supporting cord clip that is used to hold tightly main push-towing rope; The cylinder head of 4n platform load conversion jack is hinged with four drift angles of walking mechanism steel framework respectively; The piston rod top of 4n platform load conversion jack is hinged with four walking roller supports respectively; One end of each walking roller support and tie-strut is hinged; The other end of tie-strut and walking mechanism steel framework are hinged, and the lower end of walking roller support is provided with the townhouse roller that rolls along guide rail; The cylinder head of guide rail walking jack and the middle part of walking mechanism steel framework are hinged, and the piston tip and the guide rail termination of guide rail walking jack are hinged; One end and the walking mechanism steel framework of traction jack are hinged, and the traction jack other end is connected with the anchor ear that is fixed on main push-towing rope through the traction steel strand;
When installing and using; The horizontal center line of the two-door font heavy burden beam of the transverse truss girder of every cover walking heavy burden running gear is parallel to main push-towing rope; Constitute the current cat road that is parallel to main push-towing rope, the 2q platform hydraulic pressure lift jack symmetry main push-towing rope of hydraulic lifting device is installed on the two-door font heavy burden beam across the cat road; The two ends of suspender shoulder pole are connected with the piston rod top of symmetrical main push-towing rope across the hydraulic pressure lift jack in cat road through promoting steel strand; The center of suspender shoulder pole is connected with suspension bridge steel truss girder section to be lifted through connecting pin; The walking mechanism steel framework of walking heavy burden running gear is hinged through bearing pin and two-door font heavy burden beam, and the 2q platform hydraulic pressure lift jack of the m platform traction jack of said walking heavy burden running gear, 4n platform load conversion jack, p platform guide rail walking jack and hydraulic lifting device is respectively with the circuit of the system of control and fluid pressure line is connected and controlled by it; The span of above-mentioned m, n, p, q is: m is 1,2 or 3, and n is 1,2 or 3, and p is 1,2 or 3, and q is 1,2,3 or 4.
Said two-shipper is two to hang control system that hydraulic numerical control strides the cable loop wheel machine by master station, a Y field controller, a Y pumping plant, a Y pumping plant starter box and be installed in and respectively promote jack, traction jack, guide rail and walk that jack, load are changed the sensor on the jack, the distributed computer network (DCN) that data wire is formed is controlled system; Each a pumping plant field controller of configuration and a pumping plant starter box; The starting that the pumping plant starter box is responsible for big small machine stops; Each field controller can be controlled the 2q platform and promote jack, m platform traction jack, P platform guide rail walking jack, 4n platform load conversion jack; Adopt communication unit communication between each field controller, all detections and control signal are sent to main control computer through communication unit; The position signalling that main control computer arrives according to various sensor acquisition, pressure signal, according to certain control program and algorithm, the sequence of movement of decision oil cylinder is accomplished the co-ordination of cluster jack; The size of while control ratio valve opening, driving oil cylinder is stretched cylinder or the cylinder that contracts with the speed of regulation, thereby realizes the Synchronization Control of jack; The span of above-mentioned m, n, p, q and Y is: m is 1,2 or 3, and n is 1,2 or 3, and p is 1,2 or 3; Q is 1,2,3 or 4, and Y is 4,8,12 or 16.
Because two-shipper of the present invention is two to hang that hydraulic numerical control strides that the cable loop wheel machine has that lifting power is big, the advantage of high efficiency, good stability, therefore, the present invention uses the two hydraulic numerical controls that hang of two-shipper and strides the method that the cable loop wheel machine sets up girder of suspension bridge and have following beneficial effect:
1. degree of safety is high: it is erecting suspension bridge special equipment modern, that adopt the numerical control hydraulic technology that hydraulic numerical control is striden the cable loop wheel machine; The present invention uses the heavy walking type hydraulic numerical control of two-shipper band and strides the method that the cable loop wheel machine sets up girder of suspension bridge and adopt the two-shipper synchronous working high more than the degree of safety of other unit work, embodies " people-oriented ".
2. good stability: for the suspension bridge that is arranged in the mountain valley; In main truss beam installation process and suspension rod suspension status; Must suffer from fitful wind attack in the mountain valley; This is the key place of main truss beam construction safety, uses the heavy walking type hydraulic numerical control of two-shipper band and strides method that the cable loop wheel machine sets up girder of suspension bridge and can avoid effectively that fitful wind attacks good stability in the mountain valley.
3. multiple functional, quality is guaranteed: the heavy walking type hydraulic numerical control of two-shipper band of the present invention is striden the cable loop wheel machine and is had and can accomplish vertical-lift, two kinds of functions of level run; Be convenient to operation and management, form the continuous productive process face easily, improve workman's qualification through the technology that repeats, quality is guaranteed.
4. easy construction, not influenced by span; The scope of operation is concentrated; Do not take ground: two-shipper of the present invention is two to be hung hydraulic numerical control and strides the jack of cable loop wheel machine, hydraulic power unit, master station and auxiliary equipment and all concentrate on the transverse truss girder of loop wheel machine; Thereby the scope of operation is concentrated, does not take ground and does not receive the influence in suspension cable spanning footpath, is specially adapted to large-span suspension bridge.
5. economical rationality: the heavy walking type hydraulic numerical control of two-shipper band of the present invention is striden and is only adopted a set of equipment (4 covers are striden cable loop wheel machine unit) when the cable loop wheel machine is used for the erecting suspension bridge main girder construction; Its optional equipment is few; It is about 4,000,000 that every cover is striden cable loop wheel machine unit cost, four about 1,600 ten thousand yuan of full-bridges, but the comprehensive and remarkable special equipment of this cover performance; Can in all kinds suspension bridge, reuse, cost can constantly reclaim.As be divided into four stand and disappear, set a roof beam in place only 4,000,000 yuan of the expenses of equipment of bridge are compared about the about 600t of the total steel using amount of loop wheel machine and main truss beam 10000t, are merely about 6% of main truss beam, and are very economical.
Description of drawings:
Fig. 1: two-shipper is two to be hung hydraulic numerical control and strides cable loop wheel machine structure and user mode sketch map;
Fig. 2: walking heavy burden running gear structural representation;
Fig. 3: walking mechanism steel frame structures sketch map;
Fig. 4: guide rail structure sketch map;
Fig. 5: transverse truss main beam structure sketch map;
Fig. 6: transverse truss girder and the hinged sketch map of walking heavy burden running gear;
Fig. 7: transverse truss girder and walking heavy burden running gear combination sketch map;
Fig. 8: the two hydraulic numerical controls that hang of two-shipper are striden cable loop wheel machine control system block diagram;
Fig. 9: two-shipper is two to hang the pumping plant hydraulic schematic diagram that hydraulic numerical control is striden the cable loop wheel machine;
Figure 10～Figure 15: walking heavy burden running gear heavy burden walking step sketch map:
Figure 10: 1. step lays guide rail,
Figure 11: step 2. lifting is striden cable loop wheel machine main body,
Figure 12: 3. step strides the reach of cable loop wheel machine main body,
Figure 13: 4. step is transferred and is striden cable loop wheel machine main body,
Figure 14: step is lift rail 5.,
Figure 15: 6. guide rail reach of step;
Figure 16-1～Figure 16-2: embodiment two said employing two-shippers are two to be hung hydraulic numerical control and strides the full-bridge construction technology figure that the cable loop wheel machine sets up the method for girder of suspension bridge:
Figure 16-1: closed up full-bridge, Figure 16-2: the construction technology sketch map;
Figure 17: stride cable loop wheel machine band purlin operation sketch map;
The A-A sectional view of Figure 18: Figure 17;
Figure 19～Figure 20: span centre promotes, scheme of installation;
Figure 19: stride the purlin slippage of cable loop wheel machine band and put in place;
The B-B sectional view of Figure 20: Figure 19 (stride the cable loop wheel machine and promote the installation trusses);
Figure 21-1～Figure 21-2: stride operation of cable loop wheel machine band purlin and zero load and return sketch map;
Figure 22-1～Figure 22-2: steel truss girder closes up sketch map;
Figure 23: embodiment three said employing two-shippers are two to be hung hydraulic numerical control and strides the swinging and move block diagram along the main push-towing rope end bay that makes progress of method that the cable loop wheel machine sets up girder of suspension bridge:
Figure 23-1: vertically lift by crane the steel truss girder section;
Figure 23-2: stride cable loop wheel machine II and vertically tighten up and hang the steel truss girder section, stride cable loop wheel machine I and loosen to swing and move Suo Xiangqian,
Figure 23-3: steel purlin girder section moves forward, and swings to move on to when striding the perpendicular position of cable loop wheel machine I, strides cable loop wheel machine II and loosens to swing and move the Suo Xiangqian zero load voluntarily;
Figure 23-4: stride cable loop wheel machine II and loosen to swing and move the Suo Xiangqian zero load voluntarily to striding cable loop wheel machine I seat in the plane.
Among the figure:
The hinged rigidity connecting rod of 1-, 2-walking heavy burden running gear, the 3-cord clip, 4-suspension rod anchor clamps, 5-promotes steel strand, 6-suspender shoulder pole; 7-steel truss girder section, 8-hydraulic lifting device, 9-transverse truss girder, 10-main push-towing rope, 11-guide rail; 12-guide rail walking jack, 13-load conversion jack, 14-walking mechanism steel framework, the 15-bearing pin, 16-draws jack; The 17-tie-strut, 18-walking roller rack shaft hole, the 19-axis hole, 20-supports cord clip, the feet of 21-guide rail; The 22-truss, the two-door font heavy burden of 23-beam, 24-draws steel strand, 25-hydraulic pressure lift jack, 26-take-up reel.
The specific embodiment:
Embodiment one:
A kind of two-shipper is two to be hung hydraulic numerical control and strides the cable loop wheel machine; Comprise that 2 overlap cable loop wheel machine and the control system of striding; The described cable loop wheel machine of striding is a loading-and-walking type hydraulic numerical control deck erection gantry, and every cover loading-and-walking type hydraulic numerical control deck erection gantry comprises transverse truss girder 9, be installed in two cover walking heavy burden running gears 2, hydraulic lifting device 8 and suspender shoulder pole 6 four parts (referring to Fig. 1) at transverse truss girder 9 two ends;
Described transverse truss girder 9 is to connect two-door font heavy burden beam 23 respectively by truss 22 two ends that H shaped steel welds to constitute, and the space of truss is useful on the working platform of laying take-up reel 26, hydraulic power unit and master station and constructor; The top of two-door font heavy burden beam 23 is provided with bearing pin 15 (referring to Fig. 5);
Every cover walking heavy burden running gear 2 is made up of guide rail 11,16,4 load conversions of 14,1 traction jack of walking mechanism steel framework jack 13, tie-strut 17, walking roller support 18 and 1 guide rail walking jack 12, adopts bearing pin to connect between each parts; Guide rail 11 bottom surfaces are provided with and are used for cooperating, ride over three semi arch feets 21 on the main push-towing rope with main push-towing rope 10, and walking mechanism steel framework 14 tops are provided with bearing pin 15 axis hole 19, bottom, two ends movingly and respectively are provided with a supporting cord clip 20 that is used to hold tightly main push-towing rope 10; The cylinder head of 4 load conversion jack 13 is hinged with four drift angles of walking mechanism steel framework 14 respectively; The piston rod top of 4 load conversion jack 13 is hinged with four walking roller supports 18 respectively; Each walking roller support 18 is hinged with an end of tie-strut 17; The other end of tie-strut 17 and walking mechanism steel framework 14 are hinged, and the lower end of walking roller support 18 is provided with the townhouse roller that rolls along guide rail; The cylinder head of guide rail walking jack 12 and the middle part of walking mechanism steel framework 14 are hinged, and the piston tip and guide rail 11 terminations of guide rail walking jack 12 are hinged; One end and the walking mechanism steel framework 14 of traction jack 16 are hinged, and the traction jack other end is connected with the anchor ear that is fixed on main push-towing rope 10 through drawing steel strand 24 (referring to Fig. 2-Fig. 4, Fig. 6-Fig. 7);
When installing and using; The horizontal center line of the two-door font heavy burden beam 23 of transverse truss girder is parallel to main push-towing rope 10; Constitute the current cat road that is parallel to main push-towing rope 10, two hydraulic pressure lift jack, the 25 symmetrical main push-towing ropes 10 of hydraulic lifting device 8 are installed on the two-door font heavy burden beam 23 across the cat road; The two ends of suspender shoulder pole 6 are connected with the piston rod top of symmetrical main push-towing rope 10 across the hydraulic pressure lift jack 25 in cat road through promoting steel strand 5; The center of suspender shoulder pole 6 is connected with suspension bridge steel truss girder section 7 to be lifted through promoting steel strand 5, and it is 23 hinged (referring to Fig. 2-Fig. 4, Fig. 6-Fig. 7) that the walking mechanism steel framework 14 of walking heavy burden running gear 2 passes through bearing pin 15 and two-door font heavy burden beam; Two hydraulic pressure lift jack of 16,4 loads of the traction jack of said walking heavy burden running gear conversion jack 13, guide rail walking jack 12 and hydraulic lifting device 8 are respectively with the circuit of control system and fluid pressure line is connected and controlled by it.
Said two-shipper is two hang control system that hydraulic numerical control strides the cable loop wheel machine by master station, 4 field controllers, 4 pumping plants, 4 pumping plant starter boxs and be installed in the sensor that respectively promotes on jack, traction jack, guide rail walking jack, the load conversion jack, the distributed computer network (DCN) that data wire is formed is controlled system (referring to Fig. 8); Each a pumping plant field controller of configuration and a pumping plant starter box; The starting that the pumping plant starter box is responsible for big small machine stops; Each field controller can be controlled 2 lifting jack, 1 traction jack, 1 guide rail walking jack, 4 load conversion jack (referring to Fig. 9); Adopt communication unit communication between each field controller, all detections and control signal are sent to main control computer through communication unit; The position signalling that main control computer arrives according to various sensor acquisition, pressure signal, according to certain control program and algorithm, the sequence of movement of decision oil cylinder is accomplished the co-ordination of cluster jack; The size of while control ratio valve opening, driving oil cylinder is stretched cylinder or the cylinder that contracts with the speed of regulation, thereby realizes the Synchronization Control of jack.
Two-shipper of the present invention is two to be hung hydraulic numerical control to stride the concrete control method of the control system of cable loop wheel machine is the existing a plurality of patents of our company (" central cluster programmed logic control hydraulic lifting systems and promote worker's methods "; The patent No.: ZL02124632.7, " primary and second follow-up control hydraulic Hoisting System and the lifting worker method thereof " patent No.: ZL02124630.0, " a kind of hydraulic pressure lift monitoring system and the utilization in hydraulic pressure lift control thereof " number of patent application: the 2005101205259) combination of the mature technology of technology utilization, its particular content and method repeat no more here.
A kind of conversion as the embodiment of the invention; According to the span of the suspension bridge that will lift, the weight of suspension bridge main truss beam section and different execution conditions; The platform number of the hydraulic pressure lift jack of the traction jack 16 of every cover walking heavy burden running gear of formation loading-and-walking type hydraulic numerical control deck erection gantry of the present invention, load conversion jack 13, guide rail walking jack 12 and hydraulic lifting device 8 can increase or reduce; Can be respectively to adopt m platform traction jack 16,4n platform load conversion jack 13, p platform guide rail walking jack 12 and 2q platform hydraulic pressure lift jack; The span of above-mentioned m, n, p, q is: m is 1,2 or 3; N is 1,2 or 3, and p is 1,2 or 3, and q is 1,2,3 or 4.
Simultaneously; Said two-shipper is two to be hung control system that hydraulic numerical control strides the cable loop wheel machine and also will be changed by the number of field controller, pumping plant, pumping plant starter box and the corresponding sensor of master station control thereupon; That is: the two hydraulic numerical controls that hang of said two-shipper are striden the control system of cable loop wheel machine and are become distributed computer network (DCN) control system by master station, a Y field controller, a Y pumping plant, a Y pumping plant starter box and corresponding sensor, data line group, and each field controller can be controlled the 2q platform and promote jack, m platform and draw walk jack, 4n platform load of jack, P platform guide rail and change jack; The span of above-mentioned m, n, p, q and Y is: m is 1,2 or 3, and n is 1,2 or 3, and p is 1,2 or 3, and q is 1,2,3 or 4, and Y is 4,8,12 or 16.
Embodiment two:
A kind of method that is applicable to the erecting suspension bridge girder that sets up to the span centre descending from the tower end when girder of suspension bridge.
When girder of suspension bridge from the tower end when the span centre descending sets up, adopt the two hydraulic numerical controls that hang of the above-mentioned two-shipper of the present invention to stride the cable loop wheel machine two-shipper fortune roof beam structure that bears a heavy burden and establish, each steel truss girder section 7 is transported to draw close in the middle of suspension bridge from both sides sets up, the step of its operation is:
A, install and to stride the cable loop wheel machine:, and be located by connecting through hinged rigidity connecting rod 1 with two transverse truss girder 9 installations parallel to each other of striding the cable loop wheel machine; Steel truss girder section 7 is hung in two quadruplets of striding the cable loop wheel machine through connecting pin and has on the suspender shoulder pole 6 of eight suspension centres, has guaranteed the stability and the safety of integral body in the running; Two hydraulic pressure lift jack 25 symmetrical main push-towing ropes are installed in across the cat road on the two-door font heavy burden beam 23 of transverse truss girder 9, and the two ends of suspender shoulder pole 6 are connected (referring to Fig. 1) with the piston rod top that symmetrical main push-towing rope is separately positioned on the hydraulic pressure lift jack 25 of Mao Dao both sides respectively through promoting steel strand 5;
The steel truss girder section is transported in B, heavy burden walking synchronously: the span centre bottom specific bit that slides onto suspension bridge by walking heavy burden running gear walking step heavy duty steel truss girder section; What require two All-China Federation of Taiwan Compatriots cooperations industry strides cable loop wheel machine synchronous walking; Hydraulic pressure lift jack 25 will carry out horizontal adjusting (referring to Figure 17-Figure 18) to steel truss girder section 7 in the process of walking;
Before the steel truss girder section is transported in the synchronous walking of bearing a heavy burden, to piece together the field earlier in two sides in advance and piece together 8 internodes of suspension bridge steel truss girder section 7 separately in advance, separate couplet and separate 6 internode standard beam sections wherein;
C, lifting: arrive the span centre bottom specific bit of suspension bridge when the steel truss girder section after, start two synchronously and stride cable loop wheel machine totally 8 hydraulic pressure lift jack 25, the steel truss girder section 7 of 6 internodes is promoted to design elevation at a slow speed, steadily, synchronously (referring to Figure 19-Figure 20);
D, installation steel strand suspension rod, suspension steel truss girder section: after the steel truss girder section is promoted to design elevation; Three suspension rod positions the steel strand suspension rod is installed; Like Figure 19-shown in Figure 20, have 7 nodes on the steel truss girder section 7 of 6 internodes, be end node 1. and 7. wherein; 2. 4. 6. being the suspension rod loca, is the little shoulder pole hoisting point position of striding the cable loop wheel machine 3. and 5.; The up-down of hoisting rope and the installation of suspension rod are not disturbed each other, and they can separate operaton, is suspended on first section long steel truss girder section of 43.5m on three suspension rods very easily;
E, stride the zero load of cable loop wheel machine and return: behind steel truss girder section 7 suspension location, untie being connected of suspender shoulder pole 6 and steel truss girder section, stride the zero load of cable loop wheel machine and return the two sides trusses and piece together place (referring to Figure 21-1,21-2) in advance;
F, repeat above-mentioned A, B, C, D, E process sequence; Transport, lift put in place (referring to Figure 22-1,22-2) with the 2nd section, the 3rd section until the 11st section steel truss girder section successively; Up to the 11st section, the last last two sections trusses in two sides are being pieced together a sky in advance with striding the direct installation and closure of cable loop wheel machine.
Said step B, synchronously bear a heavy burden that to transport the running gear of walking heavy burden described in steel truss girder section walking step following in walking:
1. lay guide rail: the load of striding cable loop wheel machine and lift heavy relies on bottom, walking mechanism steel framework 14 two ends to hold tightly in the supporting cord clip 20 on the main push-towing rope 10 and is supported on the main push-towing rope 10; Four load conversion jack 13 draw in; Guide rail 11 is higher than main push-towing rope 10, and support cord clip 20 this moment, can hold main push-towing rope 10 tightly and play the antiskid effect; It is stable also to help simultaneously integral body and windproof; Four load conversion jack 13 that will draw in earlier eject, and guide rail 11 is dropped on the main push-towing rope 10, lay track (referring to Figure 10) for striding cable loop wheel machine heavy burden walking; The length overall of guide rail 11 is a 8-12 rice, the arc main push-towing rope 10 with respect to thousands of meters, and the guide rail 11 that is supported on the main push-towing rope 10 is straight straight lines;
2. promote and stride cable loop wheel machine main body: untie bottom, walking mechanism steel framework 14 two ends earlier and hold the supporting cord clip 20 on main push-towing rope 10 tightly; Eject load conversion jack 13, cable loop wheel machine main body is striden in lifting. and make the walking mechanism steel framework 14 disengaging main push-towing ropes 10 of striding the cable loop wheel machine and be higher than the height that can pass through main push-towing rope cord clip 3 smoothly; Stride all heavy burdens of cable loop wheel machine and all be transformed into the guide rail 11 that is supported on the main push-towing rope; (referring to Figure 11)
3. stride cable loop wheel machine main body reach: the traction jack 16 through on the control system control running gear stretches repeatedly, and pulling is striden cable loop wheel machine main body along guide rail 11 3m that advances, and assurance is striden cable loop wheel machine main body and normally advanced and stride across main push-towing rope cord clip 3 (referring to Figure 12);
4. transfer and stride cable loop wheel machine main body: four load conversion jack 13 of gathering; The walking mechanism steel framework 14 of striding the cable loop wheel machine is dropped on the main push-towing rope 10; And mounting support cord clip 20: this moment, guide rail 11 left main push-towing rope 10, did not stress, and was guide rail 11 walking get ready (referring to Figure 13);
5. lift rail: four loads conversion jack 13 that continue to draw in, with guide rail 11 bring up to can be smoothly height (referring to Figure 14) through main push-towing rope cord clip 3;
6. guide rail reach: draw guide rail walking jack 12 in, promote guide rail 13, guarantee that guide rail 11 advances smoothly and through main push-towing rope cord clip 3 (referring to Figure 15) along the direction of advance segment distance s that walks;
More than six steps be a circulation, repeat this circulation, just can realize striding the walking of on main push-towing rope 10, bearing a heavy burden of cable loop wheel machine, steel truss girder section 7 is transported to fixing position carries out assembly unit, accomplish the whole steel of erecting suspension bridge purlin girder.
In the embodiment of the invention, in the said walking heavy burden running gear walking process, guide rail 13 is 3m along the direction of advance walking apart from s, according to design demand, can increase or reduce, and general guide rail 13 is 2～4m along the direction of advance walking apart from s.
A kind of conversion as the embodiment of the invention; When girder of suspension bridge adopts the loading-and-walking type hydraulic numerical control deck erection gantry two-shipper fortune roof beam structure that bears a heavy burden to establish the step of operation when the span centre descending sets up from the tower end, also can after carrying out the A step, carry out the C step earlier and steel truss girder section 7 is promoted to design elevation at a slow speed, steadily, synchronously carries out the B step again: the walking of bearing a heavy burden synchronously is transported to the suspension bridge specific bit.
Embodiment three:
A kind of method of erecting suspension bridge girder during along main push-towing rope upward slope erecting suspension bridge girder.
Stride the operation of cable loop wheel machine weight belt trusses when the beam section from span centre mild section employing when set up two sides and set up, the concrete steps that the steel truss girder section is transported in its walking of bearing a heavy burden synchronously are said with embodiment two; And walk to the bigger upward slope end bay of the gradient when striding the cable loop wheel machine, then adopt two cover loading-and-walking type hydraulic numerical control deck erection gantry two-shippers to swing the operation of shipper pole trusses voluntarily and set up.
Adopt two cover loading-and-walking type hydraulic numerical control deck erection gantry two-shippers to swing voluntarily to move the concrete steps of setting up and be:
A, install and to stride the cable loop wheel machine: with two stride the cable loop wheel machine transverse truss girder (9) installation parallel to each other, steel truss girder section 7 is installed in two through suspender and strides under the cable loop wheel machine;
B, vertical lifting: steel truss girder section (Figure 23-1);
C, two covers are striden the cable loop wheel machine and are replaced zero load and advance, swing movement voluntarily and send the steel truss girder section:
Tighten up and hang the steel truss girder section, stride cable loop wheel machine I when striding cable loop wheel machine II upright position after the 1. vertical lifting and loosen to swing and move a Suo Xiangqian zero load segment distance L voluntarily, (Figure 23-2),
2. stride cable loop wheel machine I forward zero load tighten up to swing after a segment distance L puts in place voluntarily and move rope, stride cable loop wheel machine II and loosen slowly to swing and move rope and make steel purlin girder section move forward (Figure 23-3 dotted portion),
3. steel purlin girder section is swung to move on to tighten up when striding the perpendicular position of cable loop wheel machine I and is striden swinging of cable loop wheel machine I and move rope and steel purlin girder section vertically is suspended in stride below the cable loop wheel machine I, strides cable loop wheel machine II simultaneously and loosens to swing and move Suo Xiangqian zero load (Figure 23-3 solid line part) voluntarily;
4. striding cable loop wheel machine II loosens to swing and moves the Suo Xiangqian zero load voluntarily to striding the adjacent seat in the plane of cable loop wheel machine I (Figure 23-4);
5. tighten up and stride cable loop wheel machine II and swing and move rope, trusses be hung vertically in stride (Figure 23-2) under the cable loop wheel machine II, accomplish one and swing shipper pole trusses running;
Repeat 1.～5. step repeatedly, stride the cable loop wheel machine for two and replace zero load and advance voluntarily, the steel truss girder section is swung movement deliver to assigned address;
D, stride the vertical-lift of cable loop wheel machine and install: stride the cable loop wheel machine swing move trusses and put in place after, start lifting and promote jack, girder steel rises to design elevation slowly; Follow in the suspension rod position mounting structure suspension rod;
F, repeat above-mentioned A, B, C and D process sequence, successively the 2nd section, the 3rd section and all the other each section steel truss girder sections are transported, lifted and put in place.
Above-mentioned stride cable loop wheel machine I loosen swing move the Suo Xiangqian zero load voluntarily the value of a segment distance L be about 10m, according to design demand, can increase or reduce, the value of general distance L is 5～20m.
Claims (6)
1. use that two-shipper is two to be hung hydraulic numerical control and stride the method that the cable loop wheel machine sets up girder of suspension bridge for one kind; It is characterized in that: it is that employing is overlapped loading-and-walking type hydraulic numerical control deck erection gantries and controlled the method that system combined operation lifts the erecting suspension bridge girder of one section suspension bridge steel truss girder section simultaneously successively by two, sets up when girder of suspension bridge adopts two cover loading-and-walking type hydraulic numerical control deck erection gantry two-shippers heavy burdens to transport trusses when the span centre descending sets up from the tower end; Striding the operation of cable loop wheel machine weight belt trusses when the beam section from span centre mild section employing when set up two sides sets up; And walk to the bigger upward slope end bay of the gradient when striding the cable loop wheel machine, then adopt two cover loading-and-walking type hydraulic numerical control deck erection gantry two-shippers to swing the operation of shipper pole trusses voluntarily and set up;
Described every cover loading-and-walking type hydraulic numerical control deck erection gantry comprises transverse truss girder (9), is installed in two cover walking heavy burden running gear (2), hydraulic lifting device (8) and suspender shoulder pole (6) four parts at transverse truss girder (9) two ends;
Described transverse truss girder (9) is to connect two-door font heavy burden beam (23) respectively by truss (22) two ends that H shaped steel welds to constitute, and the space of truss is useful on the working platform of laying take-up reel (26), hydraulic power unit and master station and constructor; The top of two-door font heavy burden beam (23) is provided with bearing pin (15);
Every cover walking heavy burden running gear (2) is made up of guide rail (11), walking mechanism steel framework (14), m platform traction jack (16), 4n platform load conversion jack (13), tie-strut (17), walking roller support (18) and P platform guide rail walking jack (12), adopts bearing pin to connect between each parts; Guide rail (11) bottom surface is provided with and is used for cooperating, ride over three the semi arch feets (21) on the main push-towing rope with main push-towing rope (10), and walking mechanism steel framework (14) top is provided with bearing pin (15) axis hole (19), bottom, two ends movingly and respectively is provided with a supporting cord clip (20) that is used to hold tightly main push-towing rope (10); The cylinder head of 4n platform load conversion jack (13) is hinged with four drift angles of walking mechanism steel framework (14) respectively; The piston rod top of 4n platform load conversion jack (13) is hinged with four walking roller supports (18) respectively; Each walking roller support (18) is hinged with an end of tie-strut (17); The other end of tie-strut (17) and walking mechanism steel framework (14) are hinged, and the lower end of walking roller support (18) is provided with the townhouse roller that rolls along guide rail; The cylinder head of guide rail walking jack (12) and the middle part of walking mechanism steel framework (14) are hinged, and the piston tip and guide rail (11) termination of guide rail walking jack (12) are hinged; One end and the walking mechanism steel framework (14) of traction jack (16) are hinged, and the traction jack other end is connected with the anchor ear that is fixed on main push-towing rope (10) through traction steel strand (24);
When installing and using; The horizontal center line of the two-door font heavy burden beam (23) of transverse truss girder is parallel to main push-towing rope (10); Constitute the current cat road that is parallel to main push-towing rope (10), the symmetrical main push-towing rope of 2q platform hydraulic pressure lift jack (25) (10) of hydraulic lifting device (8) is installed on the two-door font heavy burden beam (23) across the cat road; The two ends of suspender shoulder pole (6) are connected with the piston rod top of symmetrical main push-towing rope (10) across the hydraulic pressure lift jack (25) in cat road through promoting steel strand (5); The center of suspender shoulder pole (6) is connected with suspension bridge steel truss girder section (7) to be lifted through connecting pin; The walking mechanism steel framework (14) of walking heavy burden running gear (2) is hinged through bearing pin (15) and two-door font heavy burden beam (23), and the 2q platform hydraulic pressure lift jack of the m platform traction jack (16) of said walking heavy burden running gear, 4n platform load conversion jack (13), p platform guide rail walking jack (12) and hydraulic lifting device (8) is respectively with the circuit of control system and fluid pressure line is connected and controlled by it; The span of above-mentioned m, n, p, q is: m is 1,2 or 3, and n is 1,2 or 3, and p is 1,2 or 3, and q is 1,2,3 or 4.
2. application two-shipper according to claim 1 is two to be hung hydraulic numerical control and strides the method that the cable loop wheel machine sets up girder of suspension bridge; It is characterized in that: said two-shipper is two to hang control system that hydraulic numerical control strides the cable loop wheel machine by master station, a Y field controller, a Y pumping plant, a Y pumping plant starter box and be installed in and respectively promote jack, traction jack, guide rail and walk that jack, load are changed the sensor on the jack, the distributed computer network (DCN) that data wire is formed is controlled system; Each a pumping plant field controller of configuration and a pumping plant starter box; The starting that the pumping plant starter box is responsible for big small machine stops; Each field controller can be controlled the 2q platform and promote jack, m platform traction jack, P platform guide rail walking jack, 4n platform load conversion jack; Adopt communication unit communication between each field controller, all detections and control signal are sent to main control computer through communication unit; The position signalling that main control computer arrives according to various sensor acquisition, pressure signal, according to certain control program and algorithm, the sequence of movement of decision oil cylinder is accomplished the co-ordination of cluster jack; The size of while control ratio valve opening, driving oil cylinder is stretched cylinder or the cylinder that contracts with the speed of regulation, thereby realizes the Synchronization Control of jack; The span of above-mentioned m, n, p, q and Y is: m is 1,2 or 3, and n is 1,2 or 3, and p is 1,2 or 3, and q is 1,2,3 or 4, and Y is 4,8,12 or 16.
3. application two-shipper according to claim 2 is two to be hung hydraulic numerical control and strides the method that the cable loop wheel machine sets up girder of suspension bridge, it is characterized in that: when girder of suspension bridge adopts the two hydraulic numerical controls that hang of two-shipper to stride cable loop wheel machine two-shipper and bear a heavy burden and transport the step that trusses sets up operation and be when the span centre descending sets up from the tower end:
A, install and to stride the cable loop wheel machine:, and be located by connecting through hinged rigidity connecting rod (1) with transverse truss girder (9) installation parallel to each other of two cover loading-and-walking type hydraulic numerical control deck erection gantries; Steel truss girder section (7) is hung in two covers through connecting pin and strides on the suspender shoulder pole (6) of cable loop wheel machine; The symmetrical respectively main push-towing rope of oil cylinder (25) of 2q platform hydraulic pressure lift jack is installed in across the cat road on the two-door font heavy burden beam (23) of transverse truss girder (9), and the two ends of suspender shoulder pole (6) are connected with the piston rod top that symmetrical main push-towing rope is separately positioned on the 2q platform hydraulic pressure lift jack (25) of Mao Dao both sides respectively through promoting steel strand (5);
The steel truss girder section is transported in B, heavy burden walking synchronously: the span centre bottom specific bit that slides onto suspension bridge by walking heavy burden running gear walking step heavy duty steel truss girder section; What require two cover integrations of operation strides cable loop wheel machine synchronous walking;
C, lifting: arrive the span centre bottom specific bit of suspension bridge when the steel truss girder section after, start two covers synchronously and stride cable loop wheel machine 8q platform hydraulic pressure lift jack (25) altogether, steel truss girder section (7) is promoted to design elevation at a slow speed, steadily, synchronously;
D, installation steel strand suspension rod, suspension steel truss girder section: after the steel truss girder section is promoted to design elevation, the steel strand suspension rods are installed three suspension rod positions;
E, stride the zero load of cable loop wheel machine and return: behind steel truss girder section (7) suspension location, untie being connected of suspender shoulder pole (6) and steel truss girder section, stride the zero load of cable loop wheel machine and return the two sides trusses and piece together the place in advance;
F, repeat above-mentioned A, B, C, D, E process sequence, successively all the other each section steel truss girder sections are transported, lifted and put in place.
4. application two-shipper according to claim 3 is two to be hung hydraulic numerical control and strides the method that the cable loop wheel machine sets up girder of suspension bridge; It is characterized in that: when girder of suspension bridge adopts the loading-and-walking type hydraulic numerical control deck erection gantry two-shipper fortune roof beam structure that bears a heavy burden to establish the step of operation when the span centre descending sets up from the tower end, after carrying out the A step, carry out the C step earlier and steel truss girder section (7) is promoted to design elevation at a slow speed, steadily, synchronously carries out the B step again: the walking of bearing a heavy burden synchronously is transported to the suspension bridge specific bit.
5. hang hydraulic numerical control and stride the method that the cable loop wheel machine sets up girder of suspension bridge according to claim 3 or 4 described application two-shippers are two, it is characterized in that: step C, bear a heavy burden that to transport the running gear of walking heavy burden described in steel truss girder section walking step following in walking synchronously:
1. lay guide rail: the load of striding cable loop wheel machine and lift heavy relies on bottom, walking mechanism steel framework (14) two ends to hold tightly in the supporting cord clip (20) on the main push-towing rope (10) and is supported on the main push-towing rope (10); 4n platform load conversion jack (13) draws in; Guide rail (11) is higher than main push-towing rope (10); The 4n platform load conversion jack (13) that draws in ejects, and guide rail (11) is dropped on the main push-towing rope (10), lays track for striding cable loop wheel machine heavy burden walking;
2. promote and stride cable loop wheel machine main body: untie bottom, walking mechanism steel framework (14) two ends earlier and hold the supporting cord clip (20) on main push-towing rope (10) tightly; Eject load conversion jack (13); Cable loop wheel machine main body is striden in lifting, makes walking mechanism steel framework (14) the disengaging main push-towing rope (10) of striding the cable loop wheel machine and is higher than the height that can pass through main push-towing rope cord clip (3) smoothly;
3. stride cable loop wheel machine main body reach: the traction jack (16) through on the control system control running gear stretches repeatedly, and pulling is striden cable loop wheel machine main body along guide rail (11) segment distance that advances, and assurance is striden cable loop wheel machine main body and normally advanced and stride across main push-towing rope cord clip (3);
4. transfer and stride cable loop wheel machine main body: the 4n platform load conversion jack (13) of gathering, the walking mechanism steel framework (14) of striding the cable loop wheel machine is dropped on the main push-towing rope (10), and mounting support cord clip (20): guide rail this moment (11) leaves main push-towing rope (10), does not stress;
5. lift rail: continue the 4n platform load conversion jack (13) that draws in, with guide rail (11) bring up to can be smoothly height through main push-towing rope cord clip (3);
6. guide rail reach: draw guide rail walking jack (12) in, promote guide rail (13) along the direction of advance segment distance s that walks;
More than six steps be a circulation, repeat this circulation, just can realize striding the cable loop wheel machine in main push-towing rope (10) walking of go up bearing a heavy burden, steel truss girder section (7) is transported to fixing position carries out assembly unit, accomplish the whole steel of erecting suspension bridge purlin girder.
6. application two-shipper according to claim 2 is two to be hung hydraulic numerical control and strides the method that the cable loop wheel machine sets up girder of suspension bridge; It is characterized in that: walk to the bigger upward slope end bay of the gradient when striding the cable loop wheel machine, adopt two cover loading-and-walking type hydraulic numerical control deck erection gantry two-shippers to swing the concrete steps that the operation of shipper pole trusses sets up voluntarily to be:
A, install and to stride the cable loop wheel machine: two covers are striden transverse truss girder (9) installation parallel to each other of cable loop wheel machine, and steel truss girder section (7) is installed in two covers through suspender and strides under the cable loop wheel machine;
B, vertically lift by crane the steel truss girder section;
C, two covers are striden the cable loop wheel machine and are replaced zero load and advance, swing movement voluntarily and send the steel truss girder section:
Tighten up and hang the steel truss girder section, stride cable loop wheel machine I when striding cable loop wheel machine II upright position after the 1. vertical lifting and loosen to swing and move a Suo Xiangqian zero load segment distance L voluntarily,
2. tighten up to swing after striding cable loop wheel machine I zero load putting in place voluntarily forward and move rope, stride cable loop wheel machine II and loosen slowly to swing and move rope steel purlin girder section is moved forward,
3. steel purlin girder section is swung to move on to tighten up when striding the perpendicular position of cable loop wheel machine I and is striden swinging of cable loop wheel machine I and move rope and steel purlin girder section vertically is suspended in stride below the cable loop wheel machine I, and stride cable loop wheel machine II simultaneously and loosen to swing and move the Suo Xiangqian zero load voluntarily,
4. stride cable loop wheel machine II and loosen to swing and move the Suo Xiangqian zero load voluntarily to striding cable loop wheel machine I seat in the plane,
5. tighten up and stride cable loop wheel machine II and swing and move rope, trusses be hung vertically in stride under the cable loop wheel machine II, accomplish one and swing shipper pole trusses running;
Repeat 1.～5. step repeatedly, stride the cable loop wheel machine for two and replace zero load and advance voluntarily, the steel truss girder section is swung movement deliver to assigned address;
D, stride the vertical-lift of cable loop wheel machine and install: stride the cable loop wheel machine swing move trusses and put in place after, start lifting and promote jack, girder steel rises to design elevation slowly; Then at two suspension rod position mounting structure suspension rods;
F, repeat above-mentioned A, B, C and D process sequence, successively all the other each section steel truss girder sections are transported, lifted and put in place.
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| CN104674668B (en) * | 2015-01-19 | 2016-06-29 | 中铁大桥局集团有限公司 | A kind of method by cable-hoisting construction girder section |
| CN105839537B (en) * | 2016-04-11 | 2017-04-12 | 中交第四公路工程局有限公司 | Construction method for hoisting stiffening girder of suspension bridge by adopting girdle-carrying traveling of deck erection gantry |
| CN107245957B (en) * | 2017-08-16 | 2022-11-15 | 湖南路桥建设集团有限责任公司 | Method and equipment for erecting stiffening beam of suspension bridge in air without track |
| CN112160576B (en) * | 2020-09-27 | 2021-05-25 | 中国建筑第二工程局有限公司 | High-altitude operation platform arranged on lower chord of truss and construction method thereof |
| CN118125310A (en) * | 2024-05-06 | 2024-06-04 | 贵州交通建设集团有限公司 | Mobile crane based on suspension bridge main cable |
| CN118125295A (en) * | 2024-05-06 | 2024-06-04 | 贵州交通建设集团有限公司 | Rail installation method of mobile crane based on suspension bridge main cable |
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