CN102587280A - 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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- CN102587280A CN102587280A CN2012100322491A CN201210032249A CN102587280A CN 102587280 A CN102587280 A CN 102587280A CN 2012100322491 A CN2012100322491 A CN 2012100322491A CN 201210032249 A CN201210032249 A CN 201210032249A CN 102587280 A CN102587280 A CN 102587280A
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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 job practices, 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 fast development of society, the infrastructure construction scale constantly increases, and bridge construction makes rapid progress, and the large span 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, receive the influence 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 following: king-tower district steel truss girder is installed earlier, and the end face of steel truss girder is installed girder erection crane in the king-tower district again, is the center then with the 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 king-tower district steel truss girder on the great rivers normally adopts the auxiliary crane barge of thrusting slip method to set up: utilize large-scale floating crane on pier-side bracket, to set up first internode steel truss girder, through the pushing tow mode with internode of first internode steel truss girder slippage forward; Utilize crane barge to set up the second internode steel truss girder, with two internode steel truss girders internode of thrusting slip forward; So back and forth, all set up completion until king-tower district steel truss girder (general 3～4 internodes); Then, two bridge floor girder erection cranes of the end face of steel truss girder symmetry assembly unit in the king-tower district.
There is following shortcoming in this scheme of architecture: 1, king-tower district steel truss girder sets up especially that the assembly unit of girder erection crane receives the restriction that crane barge hangs height and water level.For example in upper and middle reaches, the Changjiang river areas, the withered phase range of stage of flood reaches about 15 meters: between the highstand in flood season, crane barge hangs and highly can satisfy generally that steel truss girder sets up and the needs of girder erection crane assembly unit; But between withered phase lowstand period, crane barge hangs height and is difficult to satisfy steel truss girder and sets up the especially needs of girder erection crane assembly unit; And satisfying the more large-scale crane barge that hangs high needs, resource seldom receives the restriction of several the Yangtze Bridge navigational clearances in the Nanjing Yangtze River Bridge and the upper reaches thereof on the other hand on the one hand, can't get into 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 big; The steel truss girder of a plurality of sections need carry out vertical shift together, and much more every sections will increase the hundreds of ton even go up the load of kiloton; The system of vertical shift structure is huge, stress point is many, load is big and be prone to inhomogeneous stressed situation, vertical shift process middle slideway beam stressed complicated and changeable, and big 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 provide a kind of construct drop into little, crane barge service time short, king-tower district steel truss girder is set up and thereby the girder erection crane assembly unit does not receive water level and crane barge to hang high restriction, can reduce 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 provides 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 the assembly unit girder erection crane in flood season during high water level; Thereby make setting up of king-tower district steel truss girder not receive 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 following:
1, base support and first full circle swinging girder erection crane are installed: earlier at the frame support bracket of the other assembly unit king-tower of main pylon pier district steel truss girder, the base support assembling that will simulate steel truss girder again 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 through the slipway beam anchoring on bottom anchor device and frame support bracket top, first full circle swinging girder erection crane of assembly unit and fix with distribution beam on base support;
2, between first segment steel truss girder set up and in place: utilize first good full circle swinging girder erection crane of assembly unit earlier; Accomplish setting up of steel truss girder between first segment in order; Again first full circle swinging girder erection crane walked to walk between first segment on the steel truss girder; Utilize first full circle swinging girder erection crane to remove base support then, with steel truss girder between first segment and the vertical shift of first full circle swinging girder erection crane 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 circle swinging girder erection crane to set up the 2-the 4 internode steel truss girder in king-tower district successively;
4, the assembly unit of second full circle swinging girder erection crane: king-tower district steel truss girder set up finish after, utilize first full circle swinging girder erection crane, second full circle swinging girder erection crane of assembly unit on king-tower district steel truss girder, get into 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; Form by 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, wherein: be fixed on the slipway beam on frame support bracket top after the column bearing beam is passed by the bottom anchor device in the bottom of four vertical columns of arranging; The layout of four root posts is a 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; Between four root posts, be provided with the vertical connection system and the plane that are used to form rock-steady structure and connect system; The distribution beam of two direction across bridge is used to support girder erection crane before and after the end face of column is provided with, and distribution beam is provided with the connection otic placode that is used for fixing girder erection crane, and distribution beam is through the column anchoring at distribution beam anchor device and place; The track bearing beam top mark height of the girder erection crane of steel truss girder end face is identical between the top mark of base support high (being the distribution beam end face absolute altitude of direction across bridge) and first segment.
Column with vertically is connected system and plane and connects all to adopt between the system and be welded to connect, thereby 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 welded with upper steel plate by 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 to: base support and first full circle swinging girder erection crane and installs; Steel truss girder sets up and in place between first segment; All the other internode steel truss girders in king-tower district set up; Four steps of second full circle swinging girder erection crane assembly unit.The erection method of this king-tower district steel truss girder have construction drop into little, crane barge service time short, king-tower district steel truss girder is set up and thereby the girder erection crane assembly unit does not receive water level and crane barge to hang high restriction, can reduce the vertical shift load and reduce the vertical shift scope and reduce advantages such as vertical shift risk.
Simulation steel truss girder base support of the present invention is made up 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 after passing the column bearing beam by the bottom anchor device; Column with vertically is connected system and plane and connects all to adopt between the system and be welded to connect, thereby the formation rock-steady structure; Column adopts steel pipe column, and the column bearing beam is welded by steel plate, 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 the frame support bracket.This base support can assist the full circle swinging girder erection crane to set up king-tower district steel truss girder; Not only can solve the problem that shifts to an earlier date the assembly unit girder erection crane in flood season during high water level; Thereby king-tower district steel truss girder is set up and the girder erection crane assembly unit does not receive the restriction of water level, and simple in structure, novel, stressed clear and definite, can shorten large-scale floating crane service time significantly; Minimizing equipment drops into, and has favorable economic benefit and social benefit.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of the base support of simulation steel truss girder;
Fig. 3 is that the A-A of Fig. 2 is to sketch map;
Fig. 4 is that the B-B of Fig. 2 is to sketch map;
Fig. 5 is the sketch map of first step of setting a roof beam in place of the present invention;
Fig. 6 is the sketch map of second step of setting a roof beam in place of the present invention;
Fig. 7 is the sketch map of the 3rd step of setting a roof beam in place of the present invention;
Fig. 8 is the sketch map of 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 done further explain.
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 following:
1, base support 3 and first full circle swinging girder erection crane 4 are installed: earlier at the frame support bracket 1 of main pylon pier 7 other assembly unit king-tower district steel truss girders, base support 3 assemblings that will simulate steel truss girder again 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 passes through slipway beam 2 anchorings on bottom anchor device 12 and frame support bracket 1 top, first full circle swinging girder erection crane 4 of assembly unit and fixing with distribution beam 10 on base support 3;
2, between first segment steel truss girder 6 set up and in place: utilize first good full circle swinging girder erection crane 4 of assembly unit earlier; Accomplish setting up of steel truss girder 6 between first segment in order; Again first full circle swinging girder erection crane 4 walked to walk between first segment on the steel truss girder 6; Utilize first full circle swinging girder erection crane 4 to remove base supports 3 then, with steel truss girder between first segment 6 and first full circle swinging girder erection crane 4 vertical shift 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 circle swinging girder erection crane 4 to set up the 2-the 4 internode steel truss girder 15 in king-tower district successively;
4, the assembly unit of second full circle swinging girder erection crane 16: king-tower district steel truss girder set up finish after, utilize first full circle swinging girder erection crane 4, second full circle swinging girder erection crane 16 of assembly unit on king-tower district steel truss girder, get into the symmetrical cantilever erection stage.
A kind of base support 3 that can assist the full circle swinging girder erection crane 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, the plane connect be 13, front and back transverse distribution beam 10, bottom anchor device 12, distribution beam anchor device 11 form, wherein: be fixed on the slipway beam 2 on frame support bracket 1 top after column bearing beam 8 is passed by bottom anchor device 12 in the bottom of the columns 9 of four vertical layouts; The layout of four root posts 9 is a 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; Between four root posts 9, be provided with the vertical connection that is used to form rock-steady structure and be 14 and to connect be 13 on the plane; The distribution beam 10 of two direction across bridge is used to support girder erection crane 4 before and after the end face of column 9 is provided with, and distribution beam 10 is provided with the connection otic placode that is used for fixing girder erection crane 4, and distribution beam 10 is through column 9 anchorings of distribution beam anchor device 11 with the place; The track bearing beam 5 top mark height of the girder erection crane 4 of steel truss girder 6 end faces are identical 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.
Column 9 is 14 and to connect be all to adopt between 13 to be welded to connect on the 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 welded with upper steel plate by 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 the plane.
Claims (3)
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 circle swinging girder erection crane are installed: earlier at the frame support bracket of the other assembly unit king-tower of main pylon pier district steel truss girder, the base support assembling that will simulate steel truss girder again 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 through the slipway beam anchoring on bottom anchor device and frame support bracket top, first full circle swinging girder erection crane of assembly unit and fix with distribution beam on base support;
(2), between first segment steel truss girder set up and in place: utilize first good full circle swinging girder erection crane of assembly unit earlier; Accomplish setting up of steel truss girder between first segment in order; Again first full circle swinging girder erection crane walked to walk between first segment on the steel truss girder; Utilize first full circle swinging girder erection crane to remove base support then, with steel truss girder between first segment and the vertical shift of first full circle swinging girder erection crane 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 circle swinging girder erection crane to set up the 2-the 4 internode steel truss girder in king-tower district successively;
(4), the assembly unit of second full circle swinging girder erection crane: king-tower district steel truss girder set up finish after, utilize first full circle swinging girder erection crane, second full circle swinging girder erection crane of assembly unit on king-tower district steel truss girder, get into the symmetrical cantilever erection stage.
2. the 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; It is characterized in that: form by 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, wherein: be fixed on the slipway beam on frame support bracket top after the column bearing beam is passed by the bottom anchor device in the bottom of four vertical columns of arranging; The layout of four root posts is a 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; Between four root posts, be provided with the vertical connection system and the plane that are used to form rock-steady structure and connect system; The distribution beam of two direction across bridge is used to support girder erection crane before and after the end face of column is provided with, and distribution beam is provided with the connection otic placode that is used for fixing girder erection crane, and distribution beam is through the column anchoring at distribution beam anchor device and place; The track bearing beam top mark height of the girder erection crane of steel truss girder end face is identical between the distribution beam end face absolute altitude of direction across bridge and first segment.
3. base support according to claim 2 is characterized in that: column with vertically is connected system and plane and connects all to adopt between the system and be welded to connect, thereby 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 welded with upper steel plate by 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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| 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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| CN102587280A true CN102587280A (en) | 2012-07-18 |
| CN102587280B CN102587280B (en) | 2013-12-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103103925A (en) * | 2013-02-06 | 2013-05-15 | 中铁大桥局集团第八工程有限公司 | Combined H-shaped steel column bracket |
| CN103628411A (en) * | 2013-11-21 | 2014-03-12 | 中交第二航务工程局有限公司 | Upper-air tower-attaching cantilever type girder-lifting truss-hanging system in mountainous area |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1509440A (en) * | 1974-12-02 | 1978-05-04 | Furuholmen As T | Movable formwork for building of bridge structures |
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2012
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1509440A (en) * | 1974-12-02 | 1978-05-04 | Furuholmen As T | Movable formwork for building of bridge structures |
Non-Patent Citations (1)
| Title |
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| 吴安林: "钢桁梁整节段全焊拼装技术", 《城市道桥与防洪》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103103925A (en) * | 2013-02-06 | 2013-05-15 | 中铁大桥局集团第八工程有限公司 | Combined H-shaped steel column bracket |
| CN103628411A (en) * | 2013-11-21 | 2014-03-12 | 中交第二航务工程局有限公司 | Upper-air tower-attaching cantilever type girder-lifting truss-hanging system in mountainous area |
| 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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| CN102587280B (en) | 2013-12-25 |
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