CN111719437B - Super-heavy and super-wide steel box girder longitudinal and transverse movement construction system and method - Google Patents
Super-heavy and super-wide steel box girder longitudinal and transverse movement construction system and method Download PDFInfo
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- CN111719437B CN111719437B CN202010710071.6A CN202010710071A CN111719437B CN 111719437 B CN111719437 B CN 111719437B CN 202010710071 A CN202010710071 A CN 202010710071A CN 111719437 B CN111719437 B CN 111719437B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 257
- 239000010959 steel Substances 0.000 title claims abstract description 257
- 238000010276 construction Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000009826 distribution Methods 0.000 claims description 34
- 238000005096 rolling process Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 6
- 239000010687 lubricating oil Substances 0.000 claims description 4
- 238000012876 topography Methods 0.000 abstract description 3
- 238000003466 welding Methods 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000009194 climbing Effects 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 241001369613 Stephania tetrandra Species 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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Abstract
The invention provides an overweight and ultra-wide steel box girder longitudinal and transverse movement construction system and method, comprising a bracket system, a track girder system and a traction system, wherein the track girder system is arranged on the bracket system; the support system comprises a steel box girder longitudinal moving support, a steel box girder transverse moving support and a side span steel box girder support, wherein the steel box girder transverse moving support is perpendicular to the steel box girder longitudinal moving support and the side span steel box girder support, two ends of the steel box girder transverse moving support are respectively connected with the steel box girder longitudinal moving support and the side span steel box girder support to form a shared area, the track girder system comprises a track girder I, a track girder II and a track girder III, the track girder I is arranged on the steel box girder longitudinal moving support, the track girder II is arranged on the steel box girder transverse moving support, and the track girder III is arranged on the side span steel box girder support. The construction time and cost are reduced, and the construction problem that the steel box girder is limited to be installed in a long distance due to the construction period, the topography, the width and the weight of the steel box girder and the large span is solved.
Description
Technical Field
The invention belongs to the technical field of bridge building construction, and particularly relates to an overweight and ultra-wide steel box girder longitudinal and transverse movement construction system and method.
Background
In the bridge construction process, the steel box girder installation construction is an important subsection engineering, and is generally carried out in a field truss loading/floating crane hoisting/pushing mode, and when the overweight ultra-wide steel box girder is subjected to longitudinal and transverse movement construction in shallow water or on land, the methods limit the factors such as the construction period, the width and weight of the terrain/the steel box girder, the large span and the long distance.
In order to ensure the high-quality, high-efficiency and high-standard installation construction of the ultra-wide steel box girder (the width is more than 54.4m and the weight is 496.7 t). A reasonable and effective construction method for vertically and horizontally moving super-heavy and super-wide steel box girders is particularly important. If the design is unreasonable, a series of problems such as construction period delay, construction quality, safety and the like can be caused.
Disclosure of Invention
The invention aims to provide an overweight and ultra-wide steel box girder longitudinal and transverse movement construction system, which solves the technical problems in the prior art.
The invention further aims to provide an overweight and ultra-wide steel box girder longitudinal and transverse movement construction method, which is used for fixing the steel box girder in place through effective longitudinal and transverse sliding and reduces construction time and cost.
Therefore, the technical scheme provided by the invention is as follows:
The construction system comprises a bracket system, a track beam system and a traction system, wherein the track beam system is arranged on the bracket system, and the traction system is used for dragging the steel box beam to slide along the track beam system;
The support system comprises a steel box girder longitudinal moving support, a steel box girder transverse moving support and a side span steel box girder support, wherein the steel box girder transverse moving support is perpendicular to the steel box girder longitudinal moving support and the side span steel box girder support, two ends of the steel box girder transverse moving support respectively form a shared area with the steel box girder longitudinal moving support and the side span steel box girder support, the track girder system comprises a track girder I, a track girder II and a track Liang San, the track girder I is arranged on the steel box girder longitudinal moving support, the track girder II is arranged on the steel box girder transverse moving support, and the track girder III is arranged on the side span steel box girder support.
The steel box girder longitudinal moving support comprises a column I, a parallel connection I, an inclined strut I, a bearing girder I, a bailey frame and a distribution girder I, wherein a plurality of columns I are arranged in the transverse direction and the longitudinal direction, the parallel connection I is welded on the column I and is provided with a plurality of layers in the transverse direction and the longitudinal direction, and the inclined strut I is arranged between the parallel connection I of each layer;
The top end of the upright post is sequentially provided with a spandrel girder I, a bailey frame and a distribution girder I from bottom to top, the spandrel girder I and the distribution girder I are transversely arranged, and the track girder is fixedly arranged on the distribution girder I.
The steel box girder transverse moving support comprises upright posts II, parallel connection II, inclined struts II, bearing girders II and bailey frames, wherein the upright posts II are arranged in two rows in the transverse direction, a plurality of upright posts are arranged in each row, the upright posts I at the tail end of the steel box girder longitudinal moving support and the upright posts II at the head end of each row enclose a shared area I, the parallel connection II is welded between the adjacent upright posts II, between the adjacent upright posts I and the upright posts II, and a plurality of layers are arranged in the transverse direction and the longitudinal direction, and the inclined struts II are arranged between the uppermost two layers of parallel connection II and the lowermost two layers of parallel connection II;
The bearing beam II is arranged on the upright post II, the bailey frame is arranged on the bearing beam II, the track beam II is fixedly arranged on the bailey frame, and the bearing beam II and the bailey frame are both arranged along the transverse direction.
The side span secondary side span steel box girder support comprises three upright posts, three parallel connection posts, three diagonal braces, three spandrel girders, a bailey frame and distribution Liang Er, wherein the three upright posts are longitudinally provided with a plurality of rows, two rows of the three upright posts are shared with the steel box girder transverse moving support, the two rows of the three upright posts and the two upright posts positioned on the same straight line enclose a shared area II, the three parallel connection posts are welded between the three upright posts which are longitudinally arranged and are provided with a plurality of layers, the three diagonal braces are transversely welded between two adjacent layers of the three parallel connection posts, and are longitudinally welded between the upper two layers of the three parallel connection posts;
The three top ends of the stand columns are respectively provided with a bearing beam III, a bailey frame and a distribution Liang Er from bottom to top, the track beam III is fixedly arranged on the distribution Liang Er, and the bearing beam III and the distribution beam II are both arranged along the transverse direction.
The first track beam and the track Liang San are 3-beam I-beams, the second track beam is 2-beam I-beams, steel plates are paved on the first track beam, the second track beam and the third track beam, and lubricating oil is coated on the steel plates.
The number of the first track beams is the same as the number of the third track beams.
A construction method for vertically and horizontally moving super-wide steel box girder includes such steps as putting steel box girder on slide block, sliding the steel box girder along the first and second track beams, sliding the steel box girder along the second track beam to the third track beam, and continuously lifting jack to slide the slide block to the designed position.
The sliding block comprises a connecting frame, a top plate and a bottom plate, the top plate and the bottom plate are respectively arranged at the upper end and the lower end of the connecting frame, a steel box girder base plate is fixedly arranged on the top plate, a sliding block base plate is fixedly arranged under the bottom plate, and the area of the top plate is smaller than that of the bottom plate;
The connecting frame comprises a front connecting plate, a rear connecting plate, a left connecting plate and a right connecting plate which are vertically arranged, wherein two ends of the front connecting plate and two ends of the rear connecting plate are connected through the left connecting plate and the right connecting plate, connecting holes are formed in the centers of the front connecting plate, the rear connecting plate, the left connecting plate and the right connecting plate, and small holes are formed in two sides of each connecting hole.
The construction method for the longitudinal and transverse movement of the super-heavy and super-wide steel box girder comprises the following steps:
step 1), placing a sliding block on a first rail beam of a steel box beam longitudinal moving support, then placing the steel box beam on the sliding block through hoisting, then installing finish rolling deformed steel bars in connecting holes of a front connecting plate or a rear connecting plate of the sliding block, connecting the other end of the finish rolling deformed steel bars with a hollow jack, and then dragging the sliding block through a hollow climbing roof to drive the steel box beam to slide to a conversion position of the first rail beam and the second rail beam along the first rail beam of the steel box beam longitudinal moving support;
step 2) detaching and installing the finish-rolled deformed steel bar in a connecting hole of a left connecting plate or a right connecting plate, and driving a steel box girder to slide to a conversion position of a second track girder and a third track girder along a second track girder of a transverse moving bracket of the steel box girder by a hollow climbing roof dragging slide block;
Step 3) detaching finish-rolled deformed steel bars, installing one end of a steel strand in a connecting hole of a front connecting plate or a rear connecting plate of a sliding block, connecting the other end of the steel strand with a continuous jack, and dragging the sliding block through the continuous jack to drive the steel box girder to slide to a designed position along a side span and a side span steel box girder bracket;
and 4) accurately positioning the position of the steel box girder by adopting a double-acting jack, and simultaneously pouring out a cushion block for the sliding block to support the steel box girder.
The counter-force seat of the hollow jack is tethered with the tail ends of the first track beam and the second track beam, and the continuous jack is tethered with the track Liang San.
The beneficial effects of the invention are as follows:
According to the super-heavy ultra-wide steel box girder longitudinal and transverse moving construction system, the steel box girder longitudinal moving support, the steel box girder transverse moving support and the side span and side span steel box girder support are arranged, so that the steel box girder can be driven by the jack traction sliding block to effectively slide longitudinally and transversely to the design position along each support, the construction time and cost are reduced, and the construction problem that the steel box girder installation is limited due to the construction period, the topography, the steel box girder width and weight and the large span long distance is solved. Not only satisfies the construction load of the super-heavy super-wide steel box girder, but also satisfies the safety and reliability during girder moving, and ensures the high-quality, high-efficiency and high-standard installation and construction of the super-heavy super-wide steel box girder.
The sliding blocks used in the invention are provided with the connecting holes in the four directions of the connecting frame, so that the connecting holes in the corresponding directions can be connected according to the transverse movement or longitudinal movement directions to realize transverse and longitudinal movement, the direction of replacing the sliding blocks 20 by jacking the steel box girder is not needed, the reinstallation time of the sliding blocks due to rail replacement is greatly reduced, and the overhead operation is safer.
In order to make the above-mentioned objects of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1 is a view of a steel box girder cross-over overall floor plan;
FIG. 2 is a vertical layout view of a steel box girder longitudinally moving bracket;
FIG. 3 is a cross-sectional layout view of a longitudinally movable bracket of a steel box girder;
FIG. 4 is a plan view of a steel box girder longitudinally moving bracket;
FIG. 5 is a broken plan view of a common portion of a steel box girder longitudinally moving bracket and a steel box girder transversely moving bracket;
FIG. 6 is a cross-sectional layout view of a steel box girder traversing carriage;
FIG. 7 is a floor plan view of a steel box girder traversing support;
FIG. 8 is a plan view of a steel box girder traversing carriage;
FIG. 9 is a side-by-side steel box girder bracket floor plan;
FIG. 10 is a cross-sectional layout view of a side-by-side steel box girder bracket;
FIG. 11 is a side-by-side steel box girder bracket floor plan;
FIG. 12 is a three-dimensional view of a first rail beam and a third rail beam;
FIG. 13 is a two-step view of a track beam;
FIG. 14 is a drawing of a steel box girder hollow jack traction elevation;
FIG. 15 is a drawing of a steel box girder continuous jack traction elevation;
FIG. 16 is a front view of one embodiment of a slider;
FIG. 17 is a horizontal cross-sectional view of a slider.
In the figure:
Reference numerals illustrate:
1. A first upright post; 2. parallel connection is first; 3. a first diagonal brace; 4. a bearing beam I; 5. a bailey frame; 6. a first distribution beam; 7. a first track beam; 8. a second track beam; 9. a bearing beam II; 10. a second diagonal brace; 11. parallel connection II; 12. a second upright post; 13. a third upright post; 14. a third diagonal brace; 15. parallel connection III; 16. a second distribution beam; 17. a track beam III; 18. a bearing beam III; 19. a limit baffle; 20. a slide block; 21. a hollow jack; 22. a continuous jack; 23. a counterforce seat; 24. finish rolling deformed steel bars; 25. steel strand; 26. a front connecting plate; 27. a rear connecting plate; 28. a left connecting plate; 29. a right connecting plate; 30. a top plate; 31. a bottom plate; 32. a steel box girder backing plate; 33. a sliding block backing plate; 34. a connection hole; 35. a small hole; 36. countersunk head bolts; 37. a steel box girder; 38. a steel box girder longitudinally moving bracket; 39. the steel box girder transversely moves the bracket; 40. side span secondary side span steel box girder bracket.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present invention with specific examples.
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the examples described herein, which are provided to fully and completely disclose the present invention and fully convey the scope of the invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, like elements/components are referred to by like reference numerals.
Unless otherwise indicated, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art. In addition, it will be understood that terms defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
Example 1:
The embodiment provides an overweight and ultra-wide steel box girder longitudinal and transverse movement construction system, which comprises a bracket system, a track girder system and a traction system, wherein the track girder system is arranged on the bracket system, and the traction system is used for dragging a steel box girder 37 to slide along the track girder system;
The support system comprises a steel box girder longitudinal moving support 38, a steel box girder transverse moving support 39 and a side span and side span steel box girder support 40, the steel box girder transverse moving support 39 is perpendicular to the steel box girder longitudinal moving support 38 and the side span and side span steel box girder support 40, two ends of the steel box girder transverse moving support 39 are respectively connected with the steel box girder longitudinal moving support 38 and the side span and side span steel box girder support 40 to form a shared area, the track girder system comprises a track girder I7, a track girder II 8 and a track girder III 17, the track girder I7 is arranged on the steel box girder longitudinal moving support 38, the track girder II 8 is arranged on the steel box girder transverse moving support 39, and the track Liang San 17 is arranged on the side span and side span steel box girder support 40. As shown in fig. 1.
The steel box girder longitudinal moving bracket 38, the steel box girder transverse moving bracket 39 and the side span and side span steel box girder bracket 40 are used for providing a longitudinal and transverse moving platform and a girder storage platform so that the side span and side span steel box girder 37 reaches the design position.
According to the super-heavy ultra-wide steel box girder longitudinal and transverse moving construction system provided by the invention, the steel box girder longitudinal moving support 38, the steel box girder transverse moving support 39 and the side span and side span steel box girder support 40 are arranged, so that the jack dragging sliding block 20 can drive the steel box girder 37 to effectively slide longitudinally and transversely to the design position along each support, the construction time and cost are reduced, and the construction problem that the steel box girder 37 is limited to be installed due to the construction period, the topography, the width and weight of the steel box girder 37 and the long distance of a large span is solved.
Example 2:
On the basis of embodiment 1, the embodiment provides an overweight ultra-wide steel box girder longitudinal and transverse moving construction system, wherein a steel box girder longitudinal and transverse moving bracket 38 comprises a column I1, a parallel I2, a diagonal brace I3, a spandrel girder I4, a bailey frame 5 and a distribution girder I6, the column I1 is provided with a plurality of columns along the transverse direction and the longitudinal direction, the parallel I2 is welded on the column I1 and is provided with a plurality of layers along the transverse direction, and the diagonal brace I3 is arranged among the parallel I2 of each layer;
The top end of the upright post 1 is sequentially provided with a spandrel girder 4, a bailey frame 5 and a distribution girder 6 from bottom to top, the spandrel girder 4 and the distribution girder 6 are transversely arranged, and the track girder is fixedly arranged on the distribution girder 6.
In this embodiment, the height above the ground of the first column 1 is 30m on average, and the depth of penetration is 20m. As shown in fig. 2, the columns 1 are arranged in 9 rows in the longitudinal bridge direction, the distance is 9m, and 2 rows also serve as transverse moving supports 39 of the steel box girder; as shown in FIG. 3, the first upright posts 1 are arranged in 4 rows in the transverse bridge direction, the intervals are 6.4m, 21m and 6.4m respectively, 4 layers are welded on the first upright posts 1 at intervals of 10m in the transverse and longitudinal directions of the parallel connection first 2, and the diagonal bracing first 3 is welded between the parallel connection first 2 of each layer in the transverse and longitudinal directions.
The upright post 1 is provided with an opening at the top, and a spandrel girder 4, a bailey, a distribution girder 6 and a track girder 7 are sequentially arranged upwards, wherein the spandrel girder 4 and the distribution girder 6 are arranged along the transverse bridge direction. The first track beam 7 is formed by welding 3 beam engineering HN400×200, namely upper flanges and lower flanges of 3 section steel side by side, as shown in FIG. 12.
Example 3:
on the basis of embodiment 1, the embodiment provides an overweight ultra-wide steel box girder longitudinal and transverse moving construction system, wherein a steel box girder transverse moving bracket 39 comprises two upright posts 12, two parallel connection 11, two diagonal braces 10, two spandrel girders 9 and a bailey frame 5, the two upright posts 12 are arranged in two rows transversely, a plurality of upright posts 1 at the tail end of the steel box girder longitudinal moving bracket 38 and the two upright posts 12 at the head end of each row enclose a shared area I, the two parallel connection 11 is welded between the two adjacent upright posts 12, the two adjacent upright posts 1 and 12 and is provided with a plurality of layers in the transverse and longitudinal directions, and the two diagonal braces 10 are arranged between the two uppermost layers of parallel connection 11 and the two lowermost layers of parallel connection 11;
the bearing beam II 9 is arranged on the upright post II 12, the bailey frame 5 is arranged on the bearing beam II 9, the track beam II 8 is fixedly arranged on the bailey frame 5, and the bearing beam II 9 and the bailey frame 5 are both arranged along the transverse direction.
In this embodiment, as shown in fig. 5, 7 columns of columns are arranged in the transverse bridge direction in the region shared by the steel box girder longitudinal moving support 38 and the transverse moving support, wherein four columns are column one 1, the middle three columns are column two 12, and the equal spacing is 5.3 m. The length of the single joint of the parallel joint two 11 is 4.5m, 4 layers are welded on the first upright post 1 and the second upright post 12 at intervals of 10m in the transverse and longitudinal directions, the length of the single joint of the diagonal bracing two 10 is 9.5m, the single joint of the parallel joint two 11 in each of the upper layer and the lower layer is welded between the parallel joint two 11 in the transverse and longitudinal directions (shown in figure 6), and the parallel joint is welded between the 4 layers in the longitudinal directions (shown in figure 7).
The height above the ground of the second upright post 12 is 30m on average, and the depth of the soil penetration is 20m. The longitudinal bridge is arranged in 2 rows at the interval of 8.5m, the transverse bridge is arranged in 18 columns at the interval of 5.3m, wherein 7 columns of second upright posts 12 are arranged in the shared area of the steel box girder transverse moving support 39 and the side span and side span steel box girder support 40, and 4 columns of second upright posts 12 are independently arranged. The top openings of the first upright post 1 and the second upright post 12 are sequentially provided with a second spandrel girder 9 and a bailey upwards along the transverse bridge direction, and the second track girder 8 is formed by welding 2 truss HN650×300 side by side, namely, the upper flange and the lower flange of 2 profile steel are welded side by side, as shown in fig. 13.
Example 4:
On the basis of embodiment 1, the embodiment provides an overweight ultra-wide steel box girder longitudinal and transverse moving construction system, wherein a side span secondary side span steel box girder bracket 40 comprises three upright posts 13, three parallel connection 15, three diagonal braces 14, three spandrel girders 18, bailey brackets 5 and two distribution beams 16, the three upright posts 13 are longitudinally arranged in a plurality of rows, two rows of upright posts 13 are shared with a steel box girder transverse moving bracket 39, the two rows of upright posts 13 and two upright posts 12 positioned on the same straight line enclose a shared area II, the three parallel connection 15 is welded between the upright posts 13 longitudinally arranged and is provided with a plurality of layers, the three diagonal braces 14 are transversely welded between the adjacent two layers of three parallel connection 15, and the longitudinal welding is carried out between the two layers of three parallel connection 15;
the top end of the third upright post 13 is sequentially provided with a third bearing beam 18, a bailey frame 5 and a second distribution beam 16 from bottom to top, the third track beam 17 is fixedly arranged on the second distribution beam 16, and the third bearing beam 18 and the second distribution beam 16 are both arranged along the transverse direction.
In this embodiment, the height above the ground of the third column 13 is 30m on average, and the penetration depth is 24m. As shown in FIG. 9, the three 13 vertical bridges are arranged in 25 rows with a spacing of 9m/12m, wherein 2 rows also serve as transverse moving supports. As shown in fig. 10, in the side span secondary side span steel box girder support 40, the three vertical columns 13 are arranged in a transverse bridge direction, the intervals are 6.4m, 21m and 6.4m respectively, the upper and lower intervals of 10m in the transverse bridge direction of the third horizontal bridge are respectively used for welding 4 layers on the three vertical columns 13, the upper and lower intervals of 10m in the longitudinal bridge direction are used for welding 3 layers on the three vertical columns 13, the transverse bridge direction of the third diagonal support 14 is used for welding between the layers of the third horizontal bridge 15, and the longitudinal bridge direction is used for welding between the upper 2 layers of the third horizontal bridge 15.
The top of the column III 13 is provided with an opening, and a spandrel girder III 18, a bailey, a distribution beam II 16 and a track beam III 17 are sequentially arranged upwards, wherein the spandrel girder III 18 and the distribution beam II 16 are arranged along the transverse bridge direction. The track beam three 17 adopts 3 truss work HN400×200 as shown in FIG. 12.
Example 5:
on the basis of the embodiment 1, the embodiment provides an overweight ultra-wide steel box girder longitudinal and transverse moving construction system, wherein the first track girder 7 and the third track girder 17 are 3I-beams, the second track girder 8 is 2I-beams, steel plates are paved on the first track girder 7, the second track girder 8 and the third track girder 17, and lubricating oil is coated on the steel plates.
Because the section steel is provided with joints, in order to ensure smooth traction, a 12mm thick steel plate is paved on the first track beam 7, the second track beam 8 and the third track beam 17, the width of the steel plate is 34cm, and lubricating oil is coated. In order to ensure the stability of the first track beam 7, the second track beam 8 and the third track beam 17, the joint of the steel plates is polished and leveled.
In the embodiment, the traction system adopts an external limit, so that a limit baffle 19 (shown in fig. 12 and 13) is welded at the joint of the first track beam 7/the second track beam 8/the track Liang San, and the bolting is adopted to facilitate the transverse-longitudinal conversion of the steel beam
In addition to the fact that the second track beam 8 is fixed on the second bearing beam 9, the first track beam 7/the third track beam 17 are fixed on the first distribution beam 6/the second distribution beam 16 of the shell nose, and the longitudinal beam spacing of the first distribution beam 6/the second distribution beam 16 is 750mm, so that longitudinal displacement of the first track beam 7/the third track beam 17 can be effectively limited. According to calculation, deformation and stress caused by temperature change of the first track beam 7/the third track beam 17 are small, traction and sliding construction of the steel beam is not affected, and longitudinal displacement of the steel beam which is adjusted in place is not generated. In order to ensure the smoothness of the steel beam dragging process, the accuracy after in-place and reduce the workload of on-site adjustment, the machining and mounting quality of the first rail beam 7/the second rail beam 8/the third rail beam 17 must be ensured, wherein the plane of the first rail beam 7/the second rail beam 8/the track Liang San is not more than 20mm, the height difference of the first rail beam 7/the second rail beam 8/the third rail beam 17 is not more than 2mm, and the sliding surfaces of the first rail beam 7/the second rail beam 8/the track Liang San 17 and the stainless steel must be welded and polished smoothly and transitionally smoothly.
Example 6:
on the basis of the embodiment 1, the embodiment provides an overweight and ultra-wide steel box girder longitudinal and transverse moving construction system, wherein the number of the first track girders 7 and the number of the third track girders 17 are the same.
As shown in fig. 1,4, 8 and 11, the number of track beams one 7 is 4, the number of track beams two 8 is two, and the number of tracks Liang San and 17 is 4. When sliding, the steel box girder 37 is driven by the sliding blocks 20 to move on the first track girder 7, the second track girder 8 and the third track girder 17, and the second track girder 8 is perpendicular to the first track girder 7 and the third track girder 17, so that the number of the sliding blocks 20 can be kept unchanged in the moving direction conversion process, and the sliding blocks 20 do not need to be increased or reduced to adapt to the requirement of the number of the tracks. And the construction time is saved.
Example 7:
The embodiment provides an overweight ultra-wide steel box girder longitudinal and transverse moving construction method, which is characterized in that a steel box girder 37 is placed on a sliding block 20, firstly, the steel box girder 37 is driven by a hollow stephania root pulling sliding block 20 to slide along a transition position of a first rail girder 7 and a second rail girder 8 of a longitudinal steel box girder moving support 38, then the steel box girder 37 is driven by the hollow stephania root pulling sliding block 20 to slide along the second rail girder 8 of a transverse steel box girder moving support 39 to a transition position of the second rail girder 8 and a third rail girder 17, and finally, the steel box girder 37 is driven by a continuous jack 22 to slide along a side span and a side span steel box girder support 40 to a design position.
In this embodiment, the steel box girder longitudinal support 38 is 75m long and 38m wide, parallel to the bridge site, with the ends in the water, and the inner side is 20m from the bridge site. The steel box girder traversing carriage 39 is 208m long and 24m wide. Perpendicular to the bridge site, a connecting steel box girder longitudinally moving bracket 38 is shared with the secondary side span steel box girder 37 bracket and part of the bracket. The side-to-side steel box girder supports 40 are 246m long and 38m wide and are positioned in the main tower area, between the main pier and the auxiliary pier and between the auxiliary pier and the transition pier.
The slip system is divided into three phases: the longitudinal movement of the outer side of the bridge, the transverse movement of the outer side of the bridge and the longitudinal movement of the outer support of the bridge at the bridge are short in longitudinal and transverse movement distance (the section 38 of the longitudinal movement support of the steel box girder and the section 39 of the transverse movement support of the steel box girder), and a manual mechanical longitudinal and transverse movement process of the hollow jack 21 (the hollow jack 21+the finish rolling screw steel 24) is adopted, as shown in fig. 14; the longitudinal displacement distance on the bracket at the bridge position is longer (the side span is equal to the side span of the steel box girder bracket 40), and an electromechanical continuous jack 22 longitudinal displacement process (continuous jack 22+steel stranded wires 25) is adopted, as shown in fig. 15.
Example 8:
On the basis of embodiment 7, the embodiment provides an overweight and ultra-wide steel box girder longitudinal and transverse moving construction method, wherein the sliding block 20 comprises a connecting frame, a top plate 30 and a bottom plate 31, the top plate 30 and the bottom plate 31 are respectively arranged at the upper end and the lower end of the connecting frame, a steel box girder base plate 32 is fixedly arranged on the top plate 30, a sliding block base plate 33 is fixedly arranged under the bottom plate 31, and the area of the top plate 30 is smaller than that of the bottom plate 31;
The connecting frame comprises a front connecting plate 26, a rear connecting plate 27, a left connecting plate 28 and a right connecting plate 29 which are vertically arranged, wherein two ends of the front connecting plate 26 and the rear connecting plate 27 are connected with the right connecting plate 29 through the left connecting plate 28, and connecting holes 34 are formed in the centers of the front connecting plate 26, the rear connecting plate 27, the left connecting plate 28 and the right connecting plate 29, and small holes 35 are formed in two sides of each connecting hole 34. As shown in fig. 16 and 17, the base plate and the slider pad are connected by a plurality of countersunk bolts 36.
The slider 20 is provided with the connecting hole 34 in four directions of the connecting frame, can realize horizontal and longitudinal movement according to the connecting hole 34 of the corresponding direction of sideslip or longitudinal movement direction connection, does not need to jack up the steel box girder 37 to replace the slider 20 direction, greatly reduces the time of reinstalling the slider 20 because of track replacement, and is safer in overhead operation.
Example 9:
on the basis of the embodiment 7, the embodiment provides an overweight and ultra-wide steel box girder longitudinal and transverse moving construction method,
The method comprises the following steps:
Step 1), placing a slide block 20 on a first rail beam 7 of a steel box beam longitudinal moving bracket 38, then placing a steel box beam 37 on the slide block 20 through hoisting, then installing finish rolling deformed steel bars 24 in connecting holes 34 of a front connecting plate 26 or a rear connecting plate 27 of the slide block 20, connecting the other ends of the finish rolling deformed steel bars 24 with a hollow jack 21, and then driving the steel box beam 37 to slide to a transition position of the first rail beam 7 and a second rail beam 8 along the first rail beam 7 of the steel box beam longitudinal moving bracket 38 through a hollow climbing-roof dragging slide block 20;
Step 2) detaching and installing the finish-rolled deformed steel bar 24 in the connecting hole 34 of the left connecting plate 28 or the right connecting plate 29, and driving the steel box girder 37 to slide to the transition position of the second track girder 8 and the third track girder 17 along the second track girder 8 of the steel box girder transverse moving bracket 39 by the hollow climbing drawing slide block 20;
Step 3) detaching finish-rolled deformed steel bar 24, installing one end of a steel strand 25 in a connecting hole 34 of a front connecting plate 26 or a rear connecting plate 27 of a sliding block 20, connecting the other end of the steel strand with a continuous jack 22, and dragging the sliding block 20 by the continuous jack 22 to drive a steel box girder 37 to slide to a designed position along a side span and a side span steel box girder bracket 40;
And 4) accurately positioning the position of the steel box girder 37 by adopting a double-acting jack, and simultaneously pouring out the sliding block 20 and supporting the steel box girder 37 by using a cushion block.
The hollow jack 21 longitudinally moves on the steel box girder longitudinally moving support 38 for construction, each section of steel box girder 37 longitudinally moving the hollow jack 21 is pulled through the first 7 of 4 track girders, and the hollow jack is composed of 8 sliding blocks 20, 4 groups of 4 phi 32 finish rolling threaded steels 24, 4 groups of 8 phi 18 finish rolling threaded steels 24 ribs, 4 hollow jacks 21 with 50t and 4 counter-force seats 23. According to the position of the counter-force seat 23, the hollow jack 21 moves 38m per stroke, and after each stroke is finished, the position of the jack is moved, and then the next stroke can be pulled.
The hollow jack 21 transversely moves and constructs on the steel box girder transversely moving support 39, and each section of steel box girder 37 transversely moving the hollow jack 21 is pulled through 2 track girders II 8, and consists of 8 sliding blocks 20, 2 groups of 4 phi 32 finish rolling threaded steels 24, 4 groups of 8 phi 18 finish rolling threaded steels 24, 2 210 hollow jacks 21 and 2 counter-force seats 23. The continuous jack 22 longitudinally moves on the side span secondary side span steel box girder support 40 for construction, each section of steel box girder 37 longitudinally moved by the continuous jack 22 passes through 4 track girders three 17 and consists of 8 sliding blocks 20, 4 groups of 8 phi 15.2 steel strands 25, 4 groups of 8 phi 18 finish-rolled screw thread steel 24 ribs, 450 t continuous jacks 22 and 4 counterforce seats 23. Wherein the front and rear sliders 20 are connected by reinforcing bars passing through the small holes.
Example 10:
on the basis of the embodiment 7, the embodiment provides an overweight and ultra-wide steel box girder longitudinal and transverse moving construction method,
The counter-force seat 23 of the hollow jack 21 is tethered with the tail ends of the first track beam 7 and the second track beam 8, and the continuous jack 22 is tethered with the third track beam 17.
The counter-force seat 23 of the hollow jack 21 is bolted to the first rail beam 7 and the second rail beam 8 so as to change positions. After the continuous jack 22 is fixed on the counter-force seat 23 and each beam Duan Tuola is in place, the position of the towing system needs to be moved, so that bolting is also adopted between the counter-force seat 23 of the continuous jack 22 and the track beam III 17. And the conversion is performed by using the steel pad and the slider 20.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of carrying out the invention and that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. An overweight ultra-wide steel box girder moves construction system vertically and horizontally, which is characterized in that: the track beam system is arranged on the bracket system, and the traction system is used for dragging the steel box beam (37) to slide along the track beam system;
The support system comprises a steel box girder longitudinal moving support (38), a steel box girder transverse moving support (39) and a side span and side span steel box girder support (40), wherein the steel box girder transverse moving support (39) is perpendicular to the steel box girder longitudinal moving support (38) and the side span and side span steel box girder support (40), two ends of the steel box girder transverse moving support (39) are respectively connected with the steel box girder longitudinal moving support (38) and the side span and side span steel box girder support (40) to form a shared area, the track girder system comprises a track girder I (7), a track girder II (8) and a track girder III (17), the track girder I (7) is arranged on the steel box girder longitudinal moving support (38), the track girder II (8) is arranged on the steel box girder support (39), and the track girder III (17) is arranged on the side span and side span steel box girder support (40);
The steel box girder longitudinal moving support (38) comprises a first upright column (1), a first parallel connection (2), a first inclined strut (3), a first spandrel girder (4), a bailey frame (5) and a first distribution girder (6), wherein a plurality of first upright columns (1) are arranged transversely and longitudinally, the first parallel connection (2) is welded on the first upright column (1) and is provided with a plurality of layers in the transverse and longitudinal directions, and the first inclined strut (3) is arranged among the first parallel connection layers (2);
The top end of the first upright post (1) is sequentially provided with a first spandrel girder (4), a bailey frame (5) and a first distribution girder (6) from bottom to top, the first spandrel girder (4) and the first distribution girder (6) are transversely arranged, and the track girder is fixedly arranged on the first distribution girder (6);
The steel box girder transverse moving support (39) comprises two columns (12), two parallel connection columns (11), two inclined struts (10), two bearing beams (9) and a bailey frame (5), wherein the two columns (12) are transversely arranged in two rows, a plurality of the two rows are arranged, two rows of first columns (1) at the tail end of the steel box girder longitudinal moving support (38) and the two columns (12) at the head end of each row enclose a shared area I, the two parallel connection columns (11) are welded between the two adjacent columns (12), the two adjacent columns (1) and the two columns (12) and are provided with multiple layers in the transverse and longitudinal directions, and the two inclined struts (10) are arranged between the two uppermost layers of parallel connection columns (11) and the two lowermost layers of parallel connection columns (11);
the bearing beam II (9) is arranged on the upright post II (12), the bailey frame (5) is arranged on the bearing beam II (9), the track beam II (8) is fixedly arranged on the bailey frame (5), and the bearing beam II (9) and the bailey frame (5) are both arranged along the transverse direction.
2. The ultra-wide steel box girder longitudinal and transverse movement construction system according to claim 1, wherein: the side span secondary side span steel box girder support (40) comprises three upright posts (13), three parallel connection (15), three diagonal braces (14), three spandrel girders (18), bailey frames (5) and distribution Liang Er (16), wherein the three upright posts (13) are longitudinally arranged in a plurality of rows, two rows of three upright posts (13) are shared with the steel box girder transverse movement support (39), the two rows of three upright posts (13) and two upright posts (12) positioned on the same straight line enclose a shared area II, the three parallel connection (15) is welded between the three upright posts (13) which are longitudinally arranged and is provided with a plurality of layers, the three diagonal braces (14) are transversely welded between the adjacent two layers of three parallel connection (15), and are longitudinally welded between the two layers of three parallel connection (15);
The top end of the upright post III (13) is sequentially provided with a spandrel girder III (18), a bailey frame (5) and a distribution Liang Er (16) from bottom to top, the track girder III (17) is fixedly arranged on the distribution Liang Er (16), and the spandrel girder III (18) and the distribution Liang Er (16) are both arranged along the transverse direction.
3. The ultra-wide steel box girder longitudinal and transverse movement construction system according to claim 1, wherein: the first track beam (7) and the third track beam (17) are 3-beam I-beams, the second track beam (8) is 2-beam I-beams, steel plates are paved on the first track beam (7), the second track beam (8) and the third track beam (17), and lubricating oil is coated on the steel plates.
4. The ultra-wide steel box girder longitudinal and transverse movement construction system according to claim 1, wherein: the number of the first track beams (7) and the number of the third track beams (17) are the same.
5. An overweight and ultra-wide steel box girder longitudinal and transverse moving construction method, which uses the overweight and ultra-wide steel box girder longitudinal and transverse moving construction system as claimed in claim 1, and is characterized in that: the steel box girder (37) is placed on the sliding block (20), the sliding block (20) is pulled through the hollow jack (21) to drive the steel box girder (37) to slide to the conversion position of the first rail girder (7) and the second rail girder (8) along the rail girder (7) of the steel box girder longitudinal moving support (38), then the sliding block (20) is pulled through the hollow jack (21) to drive the steel box girder (37) to slide to the conversion position of the second rail girder (8) and the third rail girder (17) along the rail girder (8) of the steel box girder transverse moving support (39), and finally the sliding block (20) is pulled through the continuous jack (22) to drive the steel box girder (37) to slide to the design position along the edge span steel box girder support (40).
6. The method for longitudinally and laterally moving the super-heavy ultra-wide steel box girder according to claim 5, which is characterized in that: the sliding block (20) comprises a connecting frame, a top plate (30) and a bottom plate (31), wherein the top plate (30) and the bottom plate (31) are respectively arranged at the upper end and the lower end of the connecting frame, a steel box girder base plate (32) is fixedly arranged on the top plate (30), a sliding block base plate (33) is fixedly arranged under the bottom plate (31), and the area of the top plate (30) is smaller than that of the bottom plate (31);
The connecting frame comprises a front connecting plate (26), a rear connecting plate (27), a left connecting plate (28) and a right connecting plate (29) which are vertically arranged, wherein the two ends of the front connecting plate (26) and the rear connecting plate (27) are connected with the right connecting plate (29) through the left connecting plate (28), and the centers of the front connecting plate (26), the rear connecting plate (27), the left connecting plate (28) and the right connecting plate (29) are provided with connecting holes (34), and small holes (35) are formed in the two sides of each connecting hole (34).
7. The method for longitudinally and laterally moving the super-heavy ultra-wide steel box girder according to claim 6, which is characterized by comprising the following steps:
Step 1), placing a sliding block (20) on a first rail beam (7) of a steel box beam longitudinal moving support (38), then placing a steel box beam (37) on the sliding block (20) through hoisting, then installing finish rolling deformed steel bars (24) in connecting holes (34) of a front connecting plate (26) or a rear connecting plate (27) of the sliding block (20), connecting the other end of the finish rolling deformed steel bars (24) with a hollow jack (21), and then dragging the sliding block (20) through the hollow jack (21) to drive the steel box beam (37) to slide to a transition position of the first rail beam (7) and the second rail beam (8) along the first rail beam (7) of the steel box beam longitudinal moving support (38);
Step 2) detaching and installing the finish-rolled deformed steel bar (24) in a connecting hole (34) of a left connecting plate (28) or a right connecting plate (29), and dragging a sliding block (20) through a hollow jack (21) to drive a steel box girder (37) to slide to a conversion position of a second track girder (8) and a third track girder (17) along a second track girder (8) of a transverse sliding bracket (39) of the steel box girder;
Step 3) detaching finish-rolled deformed steel bars (24), installing one end of a steel strand (25) in a connecting hole (34) of a front connecting plate (26) or a rear connecting plate (27) of a sliding block (20), connecting the other end of the steel strand with a continuous jack (22), and dragging the sliding block (20) through the continuous jack (22) to drive a steel box girder (37) to slide to a designed position along a side span and side span steel box girder bracket (40);
and 4) accurately positioning the position of the steel box girder (37) by adopting a double-acting jack, and simultaneously pouring out the sliding block (20) and supporting the steel box girder (37) by using a cushion block.
8. The method for longitudinally and laterally moving the super-heavy ultra-wide steel box girder according to claim 7, which is characterized in that: the counter-force seat (23) of the hollow jack (21) is in bolt connection with the tail ends of the first track beam (7) and the second track beam (8), and the continuous jack (22) is in bolt connection with the third track beam (17).
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| CN202010710071.6A CN111719437B (en) | 2020-07-22 | 2020-07-22 | Super-heavy and super-wide steel box girder longitudinal and transverse movement construction system and method |
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| CN202010710071.6A CN111719437B (en) | 2020-07-22 | 2020-07-22 | Super-heavy and super-wide steel box girder longitudinal and transverse movement construction system and method |
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| CN101250854A (en) * | 2007-12-05 | 2008-08-27 | 中铁大桥局股份有限公司 | Large span double-linear-box beam bunching-frame method construction bridging machine |
| CN101736697A (en) * | 2009-12-15 | 2010-06-16 | 中交路桥华北工程有限公司 | Construction method for pushing and furling complete bracket of steel box girders |
| CN106522101A (en) * | 2016-11-17 | 2017-03-22 | 中交路桥华东工程有限公司 | Construction method of superlong cable beam-free sections of cable-stayed bridge |
| CN212477448U (en) * | 2020-07-22 | 2021-02-05 | 中交二公局第二工程有限公司 | Overweight super wide steel box girder moves construction system vertically and horizontally |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101250854A (en) * | 2007-12-05 | 2008-08-27 | 中铁大桥局股份有限公司 | Large span double-linear-box beam bunching-frame method construction bridging machine |
| CN101736697A (en) * | 2009-12-15 | 2010-06-16 | 中交路桥华北工程有限公司 | Construction method for pushing and furling complete bracket of steel box girders |
| CN106522101A (en) * | 2016-11-17 | 2017-03-22 | 中交路桥华东工程有限公司 | Construction method of superlong cable beam-free sections of cable-stayed bridge |
| CN212477448U (en) * | 2020-07-22 | 2021-02-05 | 中交二公局第二工程有限公司 | Overweight super wide steel box girder moves construction system vertically and horizontally |
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