CN102587280B - Main tower area steel truss girder erection method of base support auxiliary frame beam crane and base support - Google Patents
Main tower area steel truss girder erection method of base support auxiliary frame beam crane and base support Download PDFInfo
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- CN102587280B CN102587280B CN 201210032249 CN201210032249A CN102587280B CN 102587280 B CN102587280 B CN 102587280B CN 201210032249 CN201210032249 CN 201210032249 CN 201210032249 A CN201210032249 A CN 201210032249A CN 102587280 B CN102587280 B CN 102587280B
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Abstract
The invention discloses a main tower area steel truss girder erection method of a base support auxiliary frame beam crane and a base support. The main tower area steel truss girder erection method includes the following steps: a base support and a first all-rotation frame beam crane are installed; a first panel steel truss girder is erected and placed in position; steel truss girders of other panels in a main tower area are erected; and a second all-rotation frame beam crane is assembled in four steps. The base support is composed of a column, a column bearing beam, a vertical connection system, a planar connection system, a front-rear horizontal distribution beam, a bottom anchor device and a distribution beam anchor device. The main tower area steel truss girder erection method has the advantages of being small in construction investment, short in time for using a floating crane, capable of enabling erection of steel truss girder and assembly of the frame beam crane not to be limited by water level or crane height of the floating crane, and capable of reducing longitudinal moving load, decreasing longitudinal moving range and lowering longitudinal moving risk and the like. The base support is simple and novel in structure, specific in stress and capable of remarkably shortening time for using a large floating crane, reduces investment on equipment and has good economic benefits and social benefits.
Description
Technical field
The present invention relates to the Bridge Construction method, especially relate to the auxiliary gantry of setting a roof beam in place of a kind of base support and establish king-tower district steel truss girder method and base support.
Background technology
Along with China's economy and social fast development, the infrastructure construction scale constantly increases, and bridge construction makes rapid progress, and the longspan steel truss girder cable stayed bridge of crossing over rivers,lakes and seas has welcome upsurge in construction.
Build the large span stayed-cable bridge of crossing over rivers,lakes and seas, be subject to the impact of hydrogeological conditions etc., difficulty of construction is very big.Utilize prior art to set up to cross over the large span stayed-cable bridge of rivers,lakes and seas, need have high input, risk is high.The process that steel truss girder cable-stayed bridge is built is generally as follows: king-tower district steel truss girder first is installed, then at the end face of king-tower district steel truss girder, girder erection crane is installed, then centered by king-tower, to bilateral symmetry cantilever erection steel truss girder.Wherein, most critical is the installation of king-tower district steel truss girder and girder erection crane.
The scheme of architecture of the Cable stayed Bridge Main Tower district steel truss girder on great rivers normally adopts the auxiliary crane barge of top-bunt Slippage to set up: utilize large-scale floating crane to set up first internode steel truss girder on pier-side bracket, by the pushing tow mode by internode of first internode steel truss girder slippage forward; Utilize crane barge to set up steel truss girder between second section, by two internode steel truss girders internode of thrusting slip forward; And so forth, until king-tower district steel truss girder (general 3～4 internodes) all set up; Then, at symmetrical assembled two the bridge floor girder erection cranes of the end face of king-tower district steel truss girder.
There is following shortcoming in this scheme of architecture: 1, king-tower district steel truss girder set up girder erection crane especially assembledly be subject to the restriction that crane barge hangs height and water level.For example, in area, upper and middle reaches, the Changjiang river, the withered phase range of stage of flood reaches 15 meters left and right: between the highstand in flood season, crane barge hangs height generally can meet the needs that steel truss girder sets up and girder erection crane is assembled; But, between withered phase lowstand period, crane barge hangs height and is difficult to meet steel truss girder and sets up the especially assembled needs of girder erection crane; And meeting the more large-scale crane barge that hangs high needs, resource seldom, is subject to the restriction of several the Yangtze Bridge navigational clearances in Nanjing Yangtze River Bridge and upstream thereof on the other hand on the one hand, can't enter area, upper and middle reaches, the Changjiang river; 2, steel truss girder needs vertical shift repeatedly could arrive design attitude, and the vertical shift scope is large; The steel truss girder of a plurality of sections need to carry out vertical shift together, and every many sections, will increase the load that the hundreds of ton is even gone up kiloton; The system of vertical shift structure is huge, stress point is many, load is large and be prone to inhomogeneous stressed situation, vertical shift process middle slideway beam stressed complicated and changeable, and large load, there is great security risk in slippage on a large scale; 3, the cycle of setting up of king-tower district steel truss girder long, large-scale floating crane is long service time, expense is high.
Summary of the invention
First purpose of the present invention be to provide a kind of construct drop into little, crane barge service time short, can make king-tower district steel truss girder set up and thereby girder erection crane assembledly is not subject to water level and crane barge to hang high restriction, can reduces the vertical shift load, reduces the girder erection crane that the vertical shift scope reduces the auxiliary full circle swinging of base support of vertical shift risk and set up king-tower district steel truss girder method.
Second purpose of the present invention is to provide the base support that a kind of girder erection crane that can assist full circle swinging sets up the simulation steel truss girder of king-tower district steel truss girder, this base support can solve the problem that shifts to an earlier date assembled girder erection crane in flood season during high water level, thereby make setting up of king-tower district steel truss girder not be subject to water level limitation, and this base support is simple in structure, novel, stressed clear and definite.
First purpose of the present invention is achieved in that
The girder erection crane of the auxiliary full circle swinging of a kind of base support sets up king-tower district steel truss girder method, and construction sequence is as follows:
1, base support and First full-swing erecting loop wheel machine are installed: first at the frame support bracket of the other assembled king-tower of main pylon pier district steel truss girder, then the base support assembling that will simulate steel truss girder is combined into integral body; Between the highstand in flood season, utilize crane barge that base support is lifted to frame support bracket, base support is by the slipway beam anchoring on bottom anchor device and frame support bracket top, assembled First full-swing erecting loop wheel machine fixing with distribution beam on base support;
2, between first segment steel truss girder set up and in place: first utilize assembled First full-swing erecting loop wheel machine, complete in order setting up of steel truss girder between first segment, again First full-swing erecting loop wheel machine is walked to walk between first segment on steel truss girder, then utilize First full-swing erecting loop wheel machine to remove base support, by steel truss girder between first segment and the vertical shift of First full-swing erecting loop wheel machine to design attitude;
3, setting up of the 2-the 4 internode steel truss girder in king-tower district: after steel truss girder vertical shift between first segment is in place, utilize First full-swing erecting loop wheel machine to set up successively the 2-the 4 internode steel truss girder in king-tower district;
4, second full-swing erecting loop wheel machine is assembled: after king-tower district steel truss girder sets up, utilize First full-swing erecting loop wheel machine assembled second full-swing erecting loop wheel machine on king-tower district steel truss girder, enter the symmetrical cantilever erection stage.
A kind of girder erection crane that can assist full circle swinging sets up the base support of the simulation steel truss girder of king-tower district steel truss girder, column, column bearing beam, vertical system, plane connection system, front and back transverse distribution beam, bottom anchor device and the distribution beam anchor device of connecting, consist of, wherein: the bottom of four vertical columns of arranging is fixed on the slipway beam on frame support bracket top through after the column bearing beam by the bottom anchor device; The layout of four root posts is rectangle, and the horizontal spacing of four root posts is wide identical with the purlin of steel truss girder, and the longitudinal pitch of four root posts equates with the panel length of steel truss girder; Be provided with the vertical connection system and the plane that are used to form rock-steady structure and connect system between four root posts; The distribution beam of two direction across bridge before and after the end face of column is provided with for supporting girder erection crane, is provided with for the fixing connection otic placode of girder erection crane on distribution beam, and distribution beam is passed through the column anchoring at distribution beam anchor device and place; Between the top mark of base support high (being the distribution beam end face absolute altitude of direction across bridge) and first segment, the track bearing beam top mark height of the girder erection crane of steel truss girder end face is identical.
Column all adopted and is welded to connect with vertical the connection between system and plane connection system, thus the formation rock-steady structure; Column adopts the steel pipe column that diameter 800mm is above, wall thickness 10mm is above, the column bearing beam is formed by the above Plate Welding of thickness 16mm, the distribution beam of direction across bridge is welded by shaped steel, adopts box-structure, and the vertical member that connects system and plane connection system adopts box-structure.
The step of setting up of king-tower of the present invention district steel truss girder is divided into and installs into: base support and First full-swing erecting loop wheel machine; Between first segment, steel truss girder sets up and in place; All the other internode steel truss girders in king-tower district set up; Second assembled four step of full-swing erecting loop wheel machine.The erection method of this king-tower district steel truss girder have construction drop into little, crane barge service time short, can make king-tower district steel truss girder set up and thereby girder erection crane assembledly is not subject to water level and crane barge to hang high restriction, can reduces the vertical shift load and reduce the vertical shift scope and reduce the advantages such as vertical shift risk.
Simulation steel truss girder base support of the present invention is comprised of column, column bearing beam, vertical system, plane connection system, front and back transverse distribution beam, bottom anchor device and the distribution beam anchor device of connecting; The bottom of column is fixed on the slipway beam of frame support bracket through after the column bearing beam by the bottom anchor device; Column all adopted and is welded to connect with vertical the connection between system and plane connection system, thus the formation rock-steady structure; Column adopts steel pipe column, and the column bearing beam is formed by Plate Welding, and the direction across bridge distribution beam is welded by shaped steel, adopts box-structure, is the support force transferring structure of base support, and the load of girder erection crane is reached on frame support bracket.This base support can assist the full-swing erecting loop wheel machine to set up king-tower district steel truss girder, not only can solve the problem that shifts to an earlier date assembled girder erection crane in flood season during high water level, thereby king-tower district steel truss girder is set up and the assembled restriction that is not subject to water level of girder erection crane, and simple in structure, novel, stressed clear and definite, can significantly shorten large-scale floating crane service time, reduce equipment investment, there is economic benefit and social benefit preferably.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of the base support of simulation steel truss girder;
The A-A that Fig. 3 is Fig. 2 is to schematic diagram;
The B-B that Fig. 4 is Fig. 2 is to schematic diagram;
The schematic diagram that Fig. 5 is first step of setting a roof beam in place of the present invention;
The schematic diagram that Fig. 6 is second step of setting a roof beam in place of the present invention;
The schematic diagram that Fig. 7 is the 3rd step of setting a roof beam in place of the present invention;
The schematic diagram that Fig. 8 is the 4th step of setting a roof beam in place of the present invention.
The specific embodiment
Below in conjunction with embodiment and contrast accompanying drawing the present invention is described in further detail.
The girder erection crane of the auxiliary full circle swinging of a kind of base support sets up king-tower district steel truss girder method, and construction sequence is as follows:
1, base support 3 and First full-swing erecting loop wheel machine 4 installed: first at the frame support bracket 1 of main pylon pier 7 other assembled king-tower district steel truss girders, then base support 3 assemblings that will simulate steel truss girder are combined into integral body; Between the highstand in flood season, utilize crane barge that base support 3 is lifted to frame support bracket 1, base support 3 is slipway beam 2 anchorings with frame support bracket 1 top by bottom anchor device 12, assembled First full-swing erecting loop wheel machine 4 fixing with distribution beam 10 on base support 3;
2, between first segment steel truss girder 6 set up and in place: first utilize assembled First full-swing erecting loop wheel machine 4, complete in order setting up of steel truss girder 6 between first segment, again First full-swing erecting loop wheel machine 4 is walked to walk between first segment on steel truss girder 6, then utilize First full-swing erecting loop wheel machine 4 to remove base supports 3, by steel truss girder between first segment 6 and 4 vertical shifts of First full-swing erecting loop wheel machine to design attitude;
3, setting up of the 2-the 4 internode steel truss girder 15 in king-tower district: after 6 vertical shifts of steel truss girder between first segment are in place, utilize First full-swing erecting loop wheel machine 4 to set up successively the 2-the 4 internode steel truss girder 15 in king-tower district;
4, second full-swing erecting loop wheel machine 16 is assembled: after king-tower district steel truss girder sets up, utilize First full-swing erecting loop wheel machine 4 assembled second full-swing erecting loop wheel machine 16 on king-tower district steel truss girder, enter the symmetrical cantilever erection stage.
A kind of base support 3 that can assist the full-swing erecting loop wheel machine to set up the simulation steel truss girder of king-tower district steel truss girder, by column bearing beam 8, column 9, vertical connect be 14, plane connect be 13, front and back transverse distribution beam 10, bottom anchor device 12, distribution beam anchor device 11 form, wherein: the bottom of four vertical columns 9 of arranging is fixed on the slipway beam 2 on frame support bracket 1 top through after column bearing beam 8 by bottom anchor device 12; The layout of four root posts 9 is rectangle, and the horizontal spacing of four root posts 9 is wide identical with the purlin of steel truss girder, and the longitudinal pitch of four root posts 9 equates with the panel length of steel truss girder; Be provided with the vertical connection that is used to form rock-steady structure and be 14 and to connect be 13 on plane between four root posts 9; The distribution beam 10 of two direction across bridge before and after the end face of column 9 is provided with for supporting girder erection crane 4, is provided with for the fixing connection otic placode of girder erection crane 4 on distribution beam 10, and distribution beam 10 is by column 9 anchorings at distribution beam anchor device 11 and place; Between the top mark of base support 3 high (being the distribution beam 10 end face absolute altitudes of direction across bridge) and first segment, the track bearing beam 5 top mark height of the girder erection crane 4 of steel truss girder 6 end faces are identical.
Column 9 is 14 and to connect be all to adopt and be welded to connect between 13 on plane with vertically being connected, thus the formation rock-steady structure; Column 9 adopts the steel pipe column that diameter 800mm is above, wall thickness 10mm is above, column bearing beam 8 is formed by the above Plate Welding of thickness 16mm, the distribution beam 10 of direction across bridge is welded by shaped steel, adopts box-structure, and vertical the connection is 14 and to connect be that 13 member adopts box-structure on plane.
Claims (2)
1. the auxiliary gantry of setting a roof beam in place of base support is established king-tower district steel truss girder method, it is characterized in that:
(1), base support and First full-swing erecting loop wheel machine install: first at the frame support bracket of the other assembled king-tower of main pylon pier district steel truss girder, then the base support assembling that will simulate steel truss girder is combined into integral body; Between the highstand in flood season, utilize crane barge that base support is lifted to frame support bracket, base support is by the slipway beam anchoring on bottom anchor device and frame support bracket top, assembled First full-swing erecting loop wheel machine fixing with distribution beam on base support;
Wherein: base support is comprised of column, column bearing beam, vertical system, plane connection system, front and back transverse distribution beam, bottom anchor device and the distribution beam anchor device of connecting, and wherein: the bottom of four vertical columns of arranging is fixed on the slipway beam on frame support bracket top through after the column bearing beam by the bottom anchor device; The layout of four root posts is rectangle, and the horizontal spacing of four root posts is wide identical with the purlin of steel truss girder, and the longitudinal pitch of four root posts equates with the panel length of steel truss girder; Be provided with the vertical connection system and the plane that are used to form rock-steady structure and connect system between four root posts; The distribution beam of two direction across bridge before and after the end face of column is provided with for supporting girder erection crane, is provided with for the fixing connection otic placode of girder erection crane on distribution beam, and distribution beam is passed through the column anchoring at distribution beam anchor device and place; Between the distribution beam end face absolute altitude of direction across bridge and first segment, the track bearing beam top mark height of the girder erection crane of steel truss girder end face is identical;
(2), between first segment steel truss girder set up and in place: first utilize assembled First full-swing erecting loop wheel machine, complete in order setting up of steel truss girder between first segment, again First full-swing erecting loop wheel machine is walked to walk between first segment on steel truss girder, then utilize First full-swing erecting loop wheel machine to remove base support, by steel truss girder between first segment and the vertical shift of First full-swing erecting loop wheel machine to design attitude;
(3), setting up of the 2-the 4 internode steel truss girder in king-tower district: after steel truss girder vertical shift between first segment is in place, utilize First full-swing erecting loop wheel machine to set up successively the 2-the 4 internode steel truss girder in king-tower district;
(4), second full-swing erecting loop wheel machine is assembled: after king-tower district steel truss girder sets up, utilize First full-swing erecting loop wheel machine assembled second full-swing erecting loop wheel machine on king-tower district steel truss girder, enter the symmetrical cantilever erection stage.
2. the auxiliary gantry of setting a roof beam in place of base support according to claim 1 is established king-tower district steel truss girder method, it is characterized in that: column all adopted and is welded to connect with vertical the connection between system and plane connection system, thus the formation rock-steady structure; Column adopts the steel pipe column that diameter 800mm is above, wall thickness 10mm is above, the column bearing beam is formed by the above Plate Welding of thickness 16mm, the distribution beam of direction across bridge is welded by shaped steel, adopts box-structure, and the vertical member that connects system and plane connection system adopts box-structure.
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| CN 201210032249 CN102587280B (en) | 2012-02-14 | 2012-02-14 | Main tower area steel truss girder erection method of base support auxiliary frame beam crane and base support |
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| CN103103925B (en) * | 2013-02-06 | 2015-04-29 | 中铁大桥局集团第八工程有限公司 | Combined H-shaped steel column bracket |
| CN103628411B (en) * | 2013-11-21 | 2015-11-18 | 中交第二航务工程局有限公司 | Attached tower cantilevered bale handle purlin, high-altitude, mountain area crane system |
| CN105926457A (en) * | 2016-05-30 | 2016-09-07 | 中国铁建大桥工程局集团有限公司 | Method for mounting steel box girders in main tower area of cable-stayed bridge and auxiliary girder erection crane base |
| CN107604827A (en) * | 2017-08-04 | 2018-01-19 | 中铁大桥局集团有限公司 | A kind of porous large-span freely-supported steel truss girder bridge erection method |
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