CN102535343B - Method for erecting girder on top of main tower mound of steel truss girder cable-stayed bridge - Google Patents
Method for erecting girder on top of main tower mound of steel truss girder cable-stayed bridge Download PDFInfo
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- CN102535343B CN102535343B CN201210023189.7A CN201210023189A CN102535343B CN 102535343 B CN102535343 B CN 102535343B CN 201210023189 A CN201210023189 A CN 201210023189A CN 102535343 B CN102535343 B CN 102535343B
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Abstract
The invention discloses a method for erecting a girder on top of a main tower mound of a steel truss girder cable-stayed bridge, which includes the following steps: A10, an erection crane occupying support is erected beside the main tower mound, and a first erection crane is erected on the support; A20, a girder rod piece on top of a mound is hoisted from the surface of a river directly by using the first erection crane, and a third section of girder close to a position beside the erection crane occupying support is erected; and A30, the first erection crane is moved by using a walking device of the erection crane, erection of a second section of girder and a first section of girder is finished sequentially, a second erection crane is assembled on the first section of girder, and a fourth section of girder is erected by using the first erection crane. By means of the method, using time of a floating crane is shortened, a large number of slide girders, sliding cushion blocks and vertically-moving devices are not required to be arranged on a bracket beside the mound, work amount of temporary structures is saved, vertically-moving processes of the girders are reduced, working time is shortened, construction cost is saved, and effect of riverway water level is avoided.
Description
Technical field
The present invention relates to method for bridge construction, be specifically related to method for erecting girder on top of main tower mound of steel truss girder cable-stayed bridge, be specially adapted to the erection construction that river water level changes greatly, girder steel is higher apart from river surface steel truss girder cable-stayed bridge king-tower place pier pushes up four internode girder steels.
Background technology
Construction for steel truss girder cable-stayed bridge king-tower place pier top girder steel in water, conventional constructure scheme is that slipway beam and longitudinal-moving device are set on pier-side bracket, first utilize crane barge to stand in the girder steel girder steel of an internode of the assembled main span side pier of end bay side top outermost (or) of an internode of the assembled end bay side pier of main span side top outermost, between girder steel lower chord and pier-side bracket slipway beam, slip device is installed, this internode girder steel utilizes vertical shift jack by the distance of an internode of girder steel vertical shift after spelling, and then utilize the assembled girder steel being connected with this internode of crane barge, then by the two internode girder steels of the having spelled distance of an internode of vertical shift again, crane barge continues assembled next internode girder steel, again by the distance of an assembled good internode of three internode girder steel vertical shifts, assembled last the internode girder steel of crane barge, complete pier and push up the assembled of four internode girder steels, finally utilize the assembled two gantry beams loop wheel machines of crane barge.
This job practices: the one, need take for a long time crane barge resource, construction is affected by SEA LEVEL VARIATION, and equipment handover charge is expensive; The 2nd, be subject to the impact of girder steel vertical shift, each internode girder steel all needs slippage cushion block is set, the slipway beam while also needing on pier-side bracket heavy in section steel case beam is set as girder steel slippage, temporary structure quantity is huge; The 3rd, because girder steel bearing is identical in direction across bridge position with slipway beam, for guaranteeing the continuity of girder steel slippage, dress after girder steel bearing needs, increases difficulty of construction.
Therefore, be badly in need of a kind of life cycle that can shorten large-scale floating crane, reduce the assembled operation of pier top girder steel, and the steel beam lifting operation job practices that not affected by river water level.
Summary of the invention
Technical problem to be solved by this invention is to solve in erecting girder on top of main tower mound of steel truss girder cable-stayed bridge process, and the crane barge resource occupation time is long, construction is subject to river water level variable effect, temporary structure quantity is huge and the problem of girder steel working procedure complexity.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is to provide a kind of method for erecting girder on top of main tower mound of steel truss girder cable-stayed bridge, comprises the following steps:
A10, on main pylon pier side, set up girder erection crane occupy-place support, and on this support, set up first beam loop wheel machine;
A20, utilize the first girder erection crane directly from the river surface dress pier top girder steel rod member of hanging oneself, set up the 3rd internode girder steel near girder erection crane occupy-place support side;
A30, utilize the running gear of girder erection crane to move the first girder erection crane, complete successively second and first segment between the setting up of girder steel, and on girder steel between first segment assembled the second girder erection crane, utilize first gantry of setting a roof beam in place to establish the 4th internode girder steel.
In said method, steps A 10 comprises the following steps:
A101, at the other pier-side bracket of installing of main pylon pier;
A102, utilize crane barge that girder erection crane occupy-place support is installed on pier-side bracket, between this support and pier-side bracket, utilize finish rolling deformed bar to be firmly connected;
A103, utilize crane barge and tower crane to be engaged on girder erection crane occupy-place support the first girder erection crane is installed, between the first girder erection crane and this support, by bearing pin, be fixedly connected with.
In said method, steps A 30 comprises the following steps:
A301, the first girder erection crane are walked to walk on the 3rd internode girder steel, then by the first girder erection crane, remove girder erection crane occupy-place support;
A302, by the first girder erection crane from main span side-draw beam, girder steel between assembled second section;
A303, the first girder erection crane are walked to walk between second section on girder steel, and from end bay side-draw beam, girder steel between assembled first segment;
A304, utilize the first girder erection crane and tower crane to be engaged between first segment assembled the second girder erection crane on girder steel;
A305, the first girder erection crane are walked to walk on the 3rd internode girder steel, utilize assembled the 4th internode girder steel of the first girder erection crane;
A306, the first girder erection crane is walked to walk on the 4th internode girder steel, then carry out pier and push up four internode girder steel Coordinate Adjustings.
The present invention, in river course, when high water level, utilize crane barge that girder erection crane occupy-place support and the first girder erection crane are installed, crane barge is deactivated, the first girder erection crane is directly got beam from river surface boats and ships and is carried out setting up of pier top girder steel, girder steel does not need vertical shift, traveling by girder erection crane completes assembled with the second girder erection crane of setting up that pier pushes up four internode girder steels, has following beneficial effect:
(1) girder erection crane is the necessary equipment of girder steel construction, in steel girder erection, need long-term use, and the non-girder steel construction of large-scale floating crane needs long-term use equipment, and its lease expenses is expensive, the present invention has shortened crane barge service time as far as possible, on saving construction costs, has positive impact.
(2) because river all exists dry season and flood period (the Changjiang river dry season water level and flood period water level differ nearly 15m) in 1 year, crane barge is hung high restriction, great changes have taken place in the crane barge model meeting that dry season and flood period, girder steel construction was selected, and in the present invention, adopting girder erection crane to carry out steel girder erection, lifting is not affected by water level.
(3) on pier-side bracket without the huge slipway beam of magnitude setting, slippage cushion block and longitudinal-moving device, saved temporary structure engineering quantity, reduce girder steel vertical shift operation, shorten the activity duration.
(4) in conventional construction, the slipway beam of girder steel vertical shift has taken the position of girder steel bearing, therefore bearing need be traversing to design attitude by bearing by newly-increased temporary structure again after pier pushes up the whole installations of four internode girder steels, and in the present invention, girder steel bearing can be installed before steel girder erection, did not need newly-increased temporary structure.
Accompanying drawing explanation
Fig. 1 is the composition structural representation of pier top girder steel;
Fig. 2 splices the schematic diagram of the first girder erection crane in the present invention;
Fig. 3 is the lateral view of Fig. 1;
Fig. 4～Fig. 7 splices the schematic diagram of the 3rd internode girder steel in the present invention, the lateral view that wherein Fig. 5 is Fig. 4, the lateral view that Fig. 7 is Fig. 6;
Fig. 8～Figure 10 is the first girder erection crane traveling schematic diagram in the present invention;
Figure 11 is the schematic diagram of running gear;
Figure 12 splices the schematic diagram of girder steel between second section in the present invention;
Figure 13 is the lateral view of Figure 12;
Figure 14 splices the schematic diagram of girder steel between first segment in the present invention;
Figure 15 is the lateral view of Figure 14;
Figure 16 splices the schematic diagram of the second girder erection crane in the present invention;
Figure 17 is the lateral view of Figure 16;
Figure 18 splices the schematic diagram of the 4th internode girder steel in the present invention;
Figure 19 is the lateral view of Figure 18.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Figure 1, steel truss girder cable-stayed bridge main pylon pier top girder steel is linked in sequence and is formed by the first, second, third and the 4th internode girder steel 601,602,603 and 604, the second and the 3rd internode girder steel 602,603 be positioned at main pylon pier top directly over, the first and the 4th internode girder steel 601,604 lays respectively at both sides, during follow-up construction, successively from the first and the 4th internode girder steel 601,604Xiang both sides expansion.
Take Fig. 1 as example, and main pylon pier top girder steel forms successively E22, E23, E24, E25 and E26 node from left to right on bottom surface, forms successively A22, A23, A24, A25 and A26 node on end face.
Method for erecting girder on top of main tower mound of steel truss girder cable-stayed bridge provided by the invention, comprises the following steps:
A10, in steel truss girder cable-stayed bridge king-tower 500 both sides, set up pier-side bracket 100, and on pier-side bracket 100, set up girder erection crane occupy-place support 200 and the first girder erection crane 400.As shown in Figure 2 and Figure 3, concrete steps are as follows:
A101, at the other pier-side bracket 100 of installing of the pier of steel truss girder cable-stayed bridge king-tower 500;
A102, utilize crane barge 300 that girder erection crane occupy-place support 200 is installed on pier-side bracket 100, between this support 200 and pier-side bracket 100, utilize finish rolling deformed bar to be firmly connected;
A103, utilize crane barge 300 and tower crane to be engaged in to install on falsework 200 the first girder erection crane 400 (main span side girder erection crane), between main span side girder erection crane 400 and girder erection crane occupy-place support 200, by bearing pin, be fixedly connected with.
A20, utilize main span side girder erection crane 400 to lift pier top girder steel rod member from river surface boats and ships, set up the 3rd internode girder steel 603 on girder erection crane occupy-place support 200 sides, as shown in Figure 4, Figure 5, Figure 6 and Figure 7.
Concrete steps are:
(1) the large node of assembled E24 and the internodal lower chord of E24～E25;
(2) the railway bridge panel of lifting E24～E25 internode;
(3) the internodal montant of assembled E24～A24, the internodal brace of E24～A25 and the internodal montant of E25～A25;
(4) lifting A25 node, the splicing internodal upper chord of A24～A25 and A24, A25 Nodes sway bracing;
(5) the road bridge panel of lifting A24～A25 internode.
A30, utilize the running gear of girder erection crane to complete successively the setting up of girder steel at king-tower 500 diverse location places, pier top.
Steps A 30 comprises the following steps:
A301, Fig. 8～Figure 10 shows the shifting process that girder erection crane utilizes running gear, Figure 11 is the schematic diagram of running gear, as shown in Fig. 8～Figure 11, utilize vertical shift jack 703 that girder erection crane rail beam 701 is drawn to girder steel A24 Nodes and with track bearing beam 702 and is connected, then remove being connected between main span side girder erection crane 400 and girder erection crane occupy-place support 200, vertical shift jack 703 is fixing with rail beam 701, pushing tow main span side girder erection crane 400 to girder steel A24 nodes, then by main span side girder erection crane 400 and 702 lockings of track bearing beam, repeating above-mentioned steps makes main span side girder erection crane 400 walk to walk between A24～A25 node.
As shown in Figure 12 and Figure 13.
A 302, utilize main span side girder erection crane 400 that girder erection crane occupy-place support 200 is removed, then main span side girder erection crane 400 is from main span side-draw beam, and the girder steel between assembled E23～E24 node forms girder steel 602 between second section;
As shown in Figure 14, Figure 15.
A303, main span side girder erection crane 400 are walked to walk between E23～E24 node, and from end bay side-draw beam, the girder steel between assembled E22～E23 node forms girder steel 601 between first segment.
As shown in Figure 16, Figure 17.
A304, utilize main span side girder erection crane 400 and tower crane to be engaged in assembled end bay side girder erection crane 800(the second girder erection crane on the girder steel between E22～E23 node).
As shown in Figure 18, Figure 19.
A305, main span side girder erection crane 400 is walked to walk on the girder steel between E25～E26 node, utilize the girder steel between the assembled E25～E26 node of main span side girder erection crane 400 to form the 4th internode girder steel 604, and pier top the first, second, third and the 4th internode girder steel 601,602,603 and 604 4 internode girder steels are carried out to Coordinate Adjusting.
Follow-up, utilize free cantilever erection construction main, that end bay side girder erection crane 400,800 symmetries are carried out girder steel.
In the present invention, pier top girder steel does not need vertical shift, by the traveling of girder erection crane, completes assembled with the second gantry beams loop wheel machine of setting up of diverse location place, pier top girder steel, and pier top girder steel bearing can be installed before steel girder erection.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, within all falling into protection scope of the present invention.
Claims (2)
1. method for erecting girder on top of main tower mound of steel truss girder cable-stayed bridge, is characterized in that, comprises the following steps:
A10, on main pylon pier side, set up girder erection crane occupy-place support, and on this support, set up first beam loop wheel machine;
A20, utilize the first girder erection crane directly from the river surface dress pier top girder steel rod member of hanging oneself, set up the 3rd internode girder steel near girder erection crane occupy-place support side;
A30, utilize the running gear of girder erection crane to move the first girder erection crane, complete successively second and first segment between the setting up of girder steel, and on girder steel between first segment assembled the second girder erection crane, utilize first gantry of setting a roof beam in place to establish the 4th internode girder steel;
Steps A 30 comprises the following steps:
A301, the first girder erection crane are walked to walk on the 3rd internode girder steel, then by the first girder erection crane, remove girder erection crane occupy-place support;
A302, by the first girder erection crane from main span side-draw beam, girder steel between assembled second section;
A303, the first girder erection crane are walked to walk between second section on girder steel, and from end bay side-draw beam, girder steel between assembled first segment;
A304, utilize the first girder erection crane and tower crane to be engaged between first segment assembled the second girder erection crane on girder steel;
A305, the first girder erection crane are walked to walk on the 3rd internode girder steel, utilize assembled the 4th internode girder steel of the first girder erection crane;
A306, the first girder erection crane is walked to walk on the 4th internode girder steel, then carry out pier and push up four internode girder steel Coordinate Adjustings.
2. method for erecting girder on top of main tower mound of steel truss girder cable-stayed bridge as claimed in claim 1, is characterized in that, steps A 10 comprises the following steps:
A101, at the other pier-side bracket of installing of main pylon pier;
A102, utilize crane barge that girder erection crane occupy-place support is installed on pier-side bracket, between this support and pier-side bracket, utilize finish rolling deformed bar to be firmly connected;
A103, utilize crane barge and tower crane to be engaged on girder erection crane occupy-place support the first girder erection crane is installed, between the first girder erection crane and this support, by bearing pin, be fixedly connected with.
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| JP3940211B2 (en) * | 1997-12-22 | 2007-07-04 | 前田建設工業株式会社 | Construction method of horizontal beams for concrete main tower. |
| CN1900423A (en) * | 2006-07-10 | 2007-01-24 | 中铁大桥局股份有限公司 | Integrate section frame building method for steel truss |
| CN101210415A (en) * | 2007-12-20 | 2008-07-02 | 中铁大桥局股份有限公司 | Method for mounting bridge main tower cross beam top steel box girder segment |
| CN101476294B (en) * | 2009-01-22 | 2010-10-27 | 四川公路桥梁建设集团有限公司 | Mounting method for underbeam segment of large-stride steel box girder stayed-cable bridge |
| CN101649604B (en) * | 2009-08-28 | 2011-04-13 | 中铁八局集团第一工程有限公司 | Construction bracket of 1# block of inclined pull bridge and constructing method thereof |
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