CN111764300A - Curved steel beam pushing system and construction method - Google Patents
Curved steel beam pushing system and construction method Download PDFInfo
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- CN111764300A CN111764300A CN202010704513.6A CN202010704513A CN111764300A CN 111764300 A CN111764300 A CN 111764300A CN 202010704513 A CN202010704513 A CN 202010704513A CN 111764300 A CN111764300 A CN 111764300A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 219
- 239000010959 steel Substances 0.000 title claims abstract description 219
- 238000010276 construction Methods 0.000 title claims abstract description 32
- 238000003466 welding Methods 0.000 claims abstract description 11
- 238000005452 bending Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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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
Abstract
The invention provides a curve steel beam pushing system and a construction method, wherein a pulley and a connecting plate with holes are arranged at the bottom of a steel beam, the connecting plate with holes and a pushing plate are connected through bolts, the pulley is arranged on a curve track, a track buttress is arranged at certain intervals according to the length of the curve track with constant curvature, the pushing buttress is arranged below the steel beam, a first pushing buttress is arranged in the range of a steel beam assembling support, a second pushing buttress is arranged in the middle of a beam span range, a pair of three-dimensional pushing jacks are arranged on each pushing buttress, the assembling support is used for hoisting and welding the steel beam and is positioned at the head of a construction pushing section, and ultrathin vertical jacks are arranged on the steel beam buttress.
Description
Technical Field
The invention relates to the field of pushing construction of curved steel beams, in particular to pushing construction of a curved steel beam with a fixed curvature and a certain gradient.
Background
The box girder is also called a steel plate box girder, and is a common structural form of a large-span bridge. The steel box girder is generally used on bridges with large span and is called as a steel box girder because the steel box girder is shaped like a box. In a large-span cable support bridge, the span of a steel box girder reaches hundreds of meters or even thousands of meters, and the steel box girder is generally manufactured and installed by a plurality of girder sections. Because the pushing construction method does not influence the traffic under the bridge and the beam sections are periodically constructed on the fixed site, the construction quality and the construction progress are easily ensured. Therefore, the incremental launching construction method is often adopted in the installation construction of the urban bridge extra-large span bridge, the long-line approach bridge or the flyover crossing.
However, the incremental launching construction method has some disadvantages, the traditional incremental launching construction method usually needs to be provided with a guide beam, the limitation on the geometric shape of a bridge structure is more, and the incremental launching construction method cannot be well applied to the construction of curved beam shafts and variable-gradient bridges. In addition, because the stress of the bridge span structure is constantly changed in the pushing process, the beam height and the material consumption are increased, time and labor are consumed, and the cost is greatly increased.
Therefore, there is a need to find a pushing system and a construction method for a curved steel beam with a balanced pushing force and without a guide beam for construction.
Disclosure of Invention
The invention aims to provide a guide-beam-free curve steel beam pushing system and a construction method, which are convenient to construct and balanced in pushing stress.
In order to achieve the above object, the present technical solution provides a construction method of a curved steel beam pushing system, for pushing a curved steel beam, wherein the curved steel beam is placed on at least two steel beam buttresses, and a plurality of steel beam buttresses form a bending curve, including the following steps:
1) constructing two temporary buttresses, namely a track buttress and a pushing buttress, at a preset position according to engineering conditions, wherein a plurality of track buttresses are arranged on two side sides of the steel beam buttress to form a bending curve on two sides of the steel beam buttress, and the pushing buttress is arranged between the alternate steel beam buttresses;
2) a curved track with a fixed curvature is installed on the track buttress, a three-dimensional jacking jack is fixedly installed on the jacking buttress, and an ultrathin vertical jack is fixedly installed on the steel beam buttress;
3) erecting splicing supports at two sides of a steel beam buttress positioned at the initial part of a beam span, arranging a first pushing buttress in the range of the steel beam splicing supports, and arranging a second pushing buttress in the middle of the steel beam in the range of the beam span;
4) hoisting the steel beam units to the assembling support, preliminarily aligning the steel beam units by using temporary connecting plates, and then welding the steel beam units to form steel beams, wherein two through-long perforated connecting plates are welded on two sides of the bottom of each steel beam;
5) the lower part of the first steel beam unit is welded and provided with a pulley, the pulley is hung on a curved track with fixed curvature, an anti-slip wedge block is placed behind the pulley to temporarily fix the steel beam unit, and then a jacking plate is bolted to a connecting plate with holes at the position of a first pair of three-dimensional jacking jacks;
6) starting the three-dimensional pushing jack to push the pushing plate, and temporarily fixing the steel beam by using the anti-slip wedge block after the pushing jack travels a full stroke;
7) restoring the three-dimensional pushing jack to the original position, removing the pushing plate, correspondingly installing the pushing plate close to the three-dimensional pushing jack according to the position of the three-dimensional pushing jack (8), and performing pushing operation;
8) repeating the steps 6) and 7), and when the 1 st steel beam unit reaches the preset position, sequentially hoisting and welding the 2 nd and 3 rd steel beam units;
9) according to the steps 6), 7) and 8), pushing the welded steel beam forward again, installing pulleys on odd steel beam units, and starting a second pair of three-dimensional pushing jacks on the pushing buttress in the middle to perform pushing operation when the steel beam reaches the middle part of the beam span;
10) and 9) repeating the step 9), continuously hoisting and welding the subsequent steel beam units while performing pushing operation until the whole steel beam is pushed in place, and adjusting the integral line shape of the steel beam by using the three-dimensional pushing jack.
11) After the linear adjustment of the steel beam is completed, the ultrathin vertical jack on the steel beam buttress is started, the whole collapsed steel beam is jacked up, then the three-dimensional jacking jack, the curve track, the track buttress, the jacking buttress, the pulley, the jacking plate and the connecting plate with the hole at the lower part are dismantled, and finally the beam is dropped to dismantle the splicing support.
According to another aspect of the present invention, there is provided a curved steel beam prepared according to the method thereon.
Compared with the prior art, the technical scheme has the following characteristics and beneficial effects:
1. the fixed-curvature curve track is arranged to form a curve steel beam pushing system without a guide beam, so that the installation is convenient, the machining and dismounting procedures of the guide beam are reduced, and the construction period and the construction cost are reduced.
2. The jacking plate and the connecting plate with the holes are simple in structure and convenient to disassemble and assemble, the steel beam structure is not stressed directly in the jacking process, the beam height does not need to be increased, the material consumption is adaptive to stress change, and the steel beam is not easy to deform.
3. The three-dimensional jacking jack adopted in the invention can not only jack upwards, but also push forwards, and can also horizontally correct the deviation, so that the three-dimensional jacking jack is suitable for jacking operation of curved bridges and accurately controls the trend of the bridges.
Drawings
FIG. 1 is a schematic view of a curved steel beam jacking system;
FIG. 2 is a schematic view of a curved steel beam jacking system
FIG. 3 is a schematic cross-sectional view of a medium-curve steel beam jacking system;
FIG. 4 is a schematic perspective view of the top blade;
FIG. 5 is a schematic view of the longitudinal arrangement of temporary buttresses and curved tracks;
FIG. 6 is a schematic view of the transverse arrangement of temporary buttresses and curved tracks;
FIG. 7 is a schematic layout of a steel girder erection support;
FIG. 8 is a schematic view of the lateral arrangement of the pulley and the top board;
FIG. 9 is a schematic view of the jacking completion of a curved steel beam.
Figure 10 is a plan view of a curved steel beam jacking completion.
Wherein: 1-steel beam; 2-curved track; 3-rail buttress; 4-a pulley; 5-connecting plate with holes; 6-pushing the plate; 7-bolt; 8-a three-dimensional pushing jack; 9-pushing the buttress; 10-steel beam buttress; 11-splicing support; 12-ultrathin vertical jack; 13-bolt hole; 14-L-shaped steel plate; 15-triangular steel plate with holes; 16-distribution beam; 17-temporary buttress foundation.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
The curve steel beam pushing system is used for pushing a curve steel beam, wherein the curve steel beam is arranged on at least two steel beam buttresses 10, a plurality of steel beam buttresses 10 form a bending curve, and the curve steel beam pushing system comprises a steel beam 1, a curve track 2, a track buttress 3, a pulley 4, a connecting plate 5 with holes, a pushing plate 6, a bolt 7, a three-dimensional pushing jack 8, a pushing buttress 9, steel beam buttresses 10, an assembling support 11 and an ultrathin vertical jack 12.
Wherein a plurality of track buttresses 3 are arranged at two sides of the steel beam buttress 10 to form bending curves at two sides of the steel beam buttress 10, the radian of the bending curve formed by the track buttresses 3 is the same as that formed by the steel beam buttress 10, and the pushing buttresses 9 are arranged between the alternate steel beam buttresses 10.
The track buttress 3 and the pushing buttress 9 are both formed by steel pipe piles and profile steel, wherein the steel pipe piles are vertically arranged, the profile steel is transversely paved on the steel pipe piles to serve as a distribution beam 16 on the top layer of a temporary buttress, the temporary buttress is arranged on a temporary buttress foundation 17, the temporary buttress foundation 17 is in a reinforced concrete form, the temporary buttress foundation 17 is buried underground, and the upper surface of the temporary buttress foundation 17 is flush with the ground.
Installing a curved track 2 with a fixed curvature on a track buttress 3 to form a track on the side of a steel beam buttress 10, and arranging one track buttress 3 at certain intervals according to the length of the curved track 2 with the fixed curvature; three-dimensional jacking jacks 8 are fixedly mounted on the jacking buttress 9, a pair of three-dimensional jacking jacks 8 is arranged on each jacking buttress 9, and ultrathin vertical jacks 12 are fixedly mounted on the steel beam supporting beam 10.
The utility model discloses a take shape of a square, including girder steel 1 bottom, pulley 4 and foraminiferous connecting plate 5, wherein pulley 4 welds in girder steel 1 bottom and arranges in on curved track 2, respectively weld the foraminiferous connecting plate 5 that twice led to the length in the both sides of the bottom of girder steel 1, the length of foraminiferous connecting plate 5 is the same with the length of girder steel 1 promptly, lie in the foraminiferous connecting plate 5 interval setting of twice with one side, foraminiferous connecting plate 5 is connected through bolt 7 with top push pedal 6, top push pedal 6 arranges in the passageway that twice foraminiferous connecting plate 5 formed.
Erect at the both sides that are located the girder steel buttress 10 that the starting point was striden to the roof beam and assemble support 11, wherein assemble support 11 and constitute by the bracing and the cross bracing of stand and channel-section steel, wherein the setting is erect to the stand, and the bracing of channel-section steel is connected perpendicularly in the avris of stand, and the bracing and the stand that are connected in the slope of the bracing of channel-section steel, assemble support 11's top side and lay angle steel and decorative pattern steel board, as constructor operation platform.
The pushing buttress 9 is arranged below the steel beam 1, the first pushing buttress 9 is arranged in the range of the steel beam assembling support 11, the second pushing buttress 9 is arranged in the middle of the beam span range of the steel beam 1, and the assembling support 11 is used for hoisting and welding the steel beam 1 and is positioned at the head part of the construction pushing section.
The ejector plate 6 is composed of an L-shaped steel plate 14 and three reinforcing triangular steel plates 15 with holes, and the reinforcing triangular steel plates 15 with holes are arranged on the L-shaped steel plate 14 at intervals to form a triangular block structure. The triangular steel plate with holes 15 and the connecting plate with holes 5 are provided with bolt holes 13, the triangular steel plate with holes 15 and the bolt holes 13 on the connecting plate with holes 5 are matched with each other, and the width of the stress surface of the jacking plate 6 is larger than that of the three-dimensional jacking jack 8.
1 bottom of girder steel of 1 st unit (first) sets up 4 pulleys 4, and 1 bottom of girder steel of every 1 ~ 2 units sets up 2 pulleys 4, and pulley 4's position is located curved track 2 just.
The curved track 2 is composed of a steel rail combining a groove shape and an I shape.
The three-dimensional pushing jack 8 can not only lift upwards, but also push forwards, and can also horizontally correct the deviation, so that the three-dimensional pushing jack is suitable for pushing operation of curved bridges and accurately controls the trend of the bridges.
The construction method of the curve steel beam pushing system is used for pushing a curve steel beam, wherein the curve steel beam is arranged on at least two steel beam buttresses 10, and the plurality of steel beam buttresses 10 form a bending curve, and comprises the following steps:
1) as shown in fig. 2, 5 and 6, two kinds of temporary buttresses, namely, a track buttress 3 and a pushing buttress 9, are constructed at predetermined positions according to engineering conditions, wherein a plurality of track buttresses 3 are arranged on both sides of a steel beam buttress 10 to form bending curves on both sides of the steel beam buttress 10, the radian of the bending curve formed by the track buttress 3 is the same as that formed by the steel beam buttress 10, and the pushing buttress 9 is arranged between the steel beam buttress 10 which are arranged alternately;
the track buttress 3 and the pushing buttress 9 are both formed by steel pipe piles and profile steel, wherein the steel pipe piles are vertically arranged, the profile steel is transversely paved on the steel pipe piles to serve as a distribution beam 16 on the top layer of a temporary buttress, the temporary buttress is arranged on a temporary buttress foundation 17, the temporary buttress foundation 17 is in a reinforced concrete form, the temporary buttress foundation 17 is buried underground, and the upper surface of the temporary buttress foundation 17 is flush with the ground.
2) As shown in fig. 5 and 6, a curved rail 2 with a constant curvature is installed on a rail buttress 3 to form a rail at the side of a steel beam buttress 10, a three-dimensional jacking jack 8 is fixedly installed on a jacking buttress 9, and an ultra-thin vertical jack 12 is fixedly installed on a steel beam buttress 10.
3) As shown in fig. 7, erecting splicing supports 11 at both sides of a steel beam buttress 10 located at a beam span starting position, wherein the splicing supports 11 are composed of upright posts and cross braces of channel steel, the upright posts are vertically arranged, the cross braces of the channel steel are vertically connected to the sides of the upright posts, the cross braces of the channel steel are obliquely connected with the connected cross braces and upright posts, angle steel and pattern steel plates are laid on the top sides of the splicing supports 11 to serve as a constructor operating platform, and a distribution beam 16 is composed of double rows of i-steel and used for placing a mat of a steel beam 1; the first pushing buttress 9 is arranged in the range of the steel beam assembling support 11, and the second pushing buttress 9 is arranged in the middle of the beam span range of the steel beam 1.
4) As shown in fig. 1, 2 and 8, a truck crane is used for hoisting a steel beam unit to an assembly support 11, the steel beam unit is initially aligned by using temporary connecting plates and then welded to form a steel beam 1, the temporary connecting plates are used for positioning adjacent steel beam units, the bending radian of the welded steel beam 1 is equal to that of a curved track 2, two through-length perforated connecting plates 5 are respectively welded on two sides of the bottom of the steel beam 1, the two perforated connecting plates 5 on the same side are arranged at intervals, and threaded holes 13 are formed in the perforated connecting plates 5.
5) As shown in fig. 1 and 3, four pulleys 4 are welded and installed on the lower portion of the first steel beam unit, the four pulleys 4 are respectively arranged at four corners of the steel beam unit, the pulleys 4 are hung on a curved track 2 with a constant curvature, an anti-sliding wedge block is placed behind the pulleys 4 to temporarily fix the steel beam unit, then a pushing plate 6 is bolted to a perforated connecting plate 5 at the bottom of the steel beam 1 at the position of a first pair of three-dimensional pushing jacks 8, and at the moment, the pushing plate 6 is arranged corresponding to the first pair of three-dimensional pushing jacks 8.
6) And starting the three-dimensional pushing jack 8 to push the pushing plate 6, and temporarily fixing the steel beam 1 by using the anti-sliding wedge block after the pushing walking is completed by one stroke.
7) And (3) restoring the three-dimensional pushing jack 8 to the original position, detaching the pushing plate 6, reinstalling the pushing plate 6 according to the position of the three-dimensional pushing jack 8, and performing pushing operation.
8) And 7) repeating the steps 6) and 7), after the 1 st steel beam unit reaches the preset position, sequentially hoisting and welding the 2 nd and 3 rd steel beam units, and setting two pulleys 4 at the bottom of the 3 rd steel beam unit, wherein the pulleys 4 are arranged on the curve track 2.
9) And 6), pushing the welded steel beam 1 to advance forwards again according to the steps 7) and 8), installing two pulleys 4 on odd steel beam units, and starting a second pair of three-dimensional pushing jacks 8 on a pushing buttress 9 in the middle to perform pushing operation when the steel beam 1 reaches the middle part of the beam span.
10) And 9) repeating the step 9), continuously hoisting and welding subsequent steel beam units while performing pushing operation, strictly controlling structural deformation and integral line shape until the whole steel beam 1 is pushed to the position, and adjusting the integral line shape of the steel beam 1 by using the three-dimensional pushing jack 8.
11) As shown in fig. 9 and 10, after the linear adjustment of the steel beam 1 is completed, the ultrathin vertical jack 12 on the steel beam buttress 10 is started to jack up the whole girder 1, then the three-dimensional jacking jack 8, the curved track 2, the track buttress 3, the jacking buttress 9, the pulley 4, the jacking plate 6 and the connecting plate 5 with holes at the lower part are removed, and finally the beam is dropped to remove the splicing support 11, so that the construction of the curved steel beam jacking system is completed.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Claims (8)
1. A construction method of a curve steel beam pushing system is used for pushing a curve steel beam, wherein the curve steel beam is arranged on at least two steel beam buttresses (10), and a plurality of steel beam buttresses (10) form a bending curve, and is characterized by comprising the following steps:
1) according to engineering conditions, two temporary buttresses, namely a track buttress (3) and a pushing buttress (9), are constructed at a preset position, wherein a plurality of track buttresses (3) are arranged on two side sides of a steel beam buttress (10) to form a bending curve on two sides of the steel beam buttress (10), and the pushing buttress (9) is arranged between the alternate steel beam buttress (10);
2) a curved track (2) with a fixed curvature is arranged on a track buttress (3), a three-dimensional jacking jack (8) is fixedly arranged on a jacking buttress (9), and an ultrathin vertical jack (12) is fixedly arranged on a steel beam buttress (10);
3) erecting assembling supports (11) at two sides of a steel beam buttress (10) positioned at the initial part of a beam span, arranging a first pushing buttress (9) in the range of the steel beam assembling supports (11), and arranging a second pushing buttress (9) in the middle of the steel beam (1) in the beam span range;
4) hoisting the steel beam units to an assembling support (11), preliminarily aligning the steel beam units by using temporary connecting plates, and then welding to form a steel beam (1), and welding two through-long perforated connecting plates (5) on two sides of the bottom of the steel beam (1);
5) a pulley (4) is welded and installed on the lower portion of the first steel beam unit, the pulley (4) is hung on a curve track (2) with a fixed curvature, an anti-sliding wedge block is placed behind the pulley (4) to temporarily fix the steel beam unit, and then a pushing plate (6) is bolted to a connecting plate (5) with a hole at the position of a first pair of three-dimensional pushing jacks (8);
6) starting a three-dimensional pushing jack (8) to push a pushing plate (6), and temporarily fixing the steel beam (1) by using an anti-slip wedge block after the pushing travels a full stroke;
7) restoring the three-dimensional pushing jack (8) to the original position, detaching the pushing plate (6), and reinstalling the pushing plate (6) according to the position of the three-dimensional pushing jack (8) to perform pushing operation;
8) repeating the steps 6) and 7), and when the 1 st steel beam unit reaches the preset position, sequentially hoisting and welding the 2 nd and 3 rd steel beam units;
9) according to the steps 6), 7) and 8), pushing the welded steel beam (1) to advance forwards again, mounting a pulley (4) on the odd steel beam unit, and starting a second pair of three-dimensional pushing jacks (8) on a pushing buttress (9) in the middle to perform pushing operation when the steel beam (1) reaches the middle part of the beam span;
10) and 9) repeating the step 9), continuously hoisting and welding subsequent steel beam units while performing pushing operation until the whole steel beam (1) is pushed in place, and adjusting the integral line shape of the steel beam (1) by using the three-dimensional pushing jack (8).
11) After the linear adjustment of the steel beam (1) is completed, an ultrathin vertical jack (12) on the steel beam buttress (10) is started, the whole girder (1) which is collapsed is jacked up, then the three-dimensional jacking jack (8), the curve track (2), the track buttress (3), the jacking buttress (9), the pulley (4), the jacking plate (6) and the connecting plate (5) with holes at the lower part are dismantled, and finally the assembled support (11) is dismantled after the beam falls.
2. The construction method of the curved steel beam pushing system according to claim 1, wherein the track buttress (3) pushing buttress (9) is composed of steel pipe piles and section steel, wherein the steel pipe piles are vertically arranged, and the section steel is transversely paved on the steel pipe piles to be used as the distribution beam (16) of the temporary buttress top layer.
3. The construction method of the curved steel beam jacking system according to claim 1, wherein the assembling support (11) is composed of upright posts and cross braces of channel steel, wherein the upright posts are vertically arranged, the cross braces of the channel steel are vertically connected to the sides of the upright posts, the cross braces of the channel steel are obliquely connected with the connected cross braces and upright posts, and angle steel and pattern steel plates are laid on the top side of the assembling support (11).
4. The construction method of the curve steel beam pushing system according to claim 1, wherein the pushing plate (6) is composed of an L-shaped steel plate (14) and a reinforced perforated triangular steel plate (15), the reinforced perforated triangular steel plate (15) is arranged on the L-shaped steel plate (14) at intervals, and the perforated triangular steel plate (15) and the bolt hole (13) on the perforated connecting plate (5) are matched with each other.
5. The construction method of the curved steel beam jacking system according to claim 1, wherein four pulleys (4) are arranged at the bottom of the steel beam (1) of the 1 st unit, and two pulleys (4) are arranged at the bottom of the steel beam (1) of every 1-2 units.
6. The construction method of the curved steel beam jacking system according to claim 1, wherein two perforated connecting plates (5) located on the same side are arranged at intervals.
7. A curved steel beam is characterized by being obtained by construction according to the construction method of the curved steel beam jacking system of any one of claims 1 to 6.
8. The utility model provides a curve girder steel pushes away system for push away curve girder steel, wherein curve girder steel is arranged in on two at least girder steel buttresses (10), and a plurality of girder steel buttresses (10) form the bending curve, its characterized in that includes:
the device comprises a curved track (2), a track buttress (3), a pulley (4), a connecting plate (5) with a hole, a jacking plate (6), a three-dimensional jacking jack (8), a jacking buttress (9), an assembling bracket (11) and an ultrathin vertical jack (12);
the track support piers (3) are arranged on two side sides of the steel beam support pier (10) to form bending curves on two sides of the steel beam support pier (10), the pushing support piers (9) are arranged between the steel beam support piers (10) which are arranged alternately, the track support pier (3) is provided with a curve track (2) with a fixed curvature, the pushing support pier (9) is fixedly provided with a three-dimensional pushing jack (8), and the steel beam support beam (10) is fixedly provided with an ultrathin vertical jack (12);
the bottom of the steel beam (1) is provided with a pulley (4), wherein the pulley (4) is arranged on the curved track (2), two sides of the bottom of the steel beam (1) are respectively welded with two through-long connecting plates with holes (5), the connecting plates with holes (5) are connected with a pushing plate (6), a three-dimensional pushing jack (8) pushes the pushing plate (6), and two sides of a steel beam buttress (10) positioned at the initial part of the beam span are erected with an assembling support (11).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112554063A (en) * | 2020-11-27 | 2021-03-26 | 中交路桥建设有限公司 | Turning method for cast-in-situ beam composite support with long span, small radius and high pier |
| CN112900281A (en) * | 2021-02-03 | 2021-06-04 | 中交武汉港湾工程设计研究院有限公司 | Complicated curve beam upward jacking construction device and method |
| CN113718653A (en) * | 2021-08-24 | 2021-11-30 | 武汉精杰重型工程有限公司 | Pushing construction method for curved beam |
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