CN118029268B - Hoisting and assembling method for fixed support of floating bridge - Google Patents
Hoisting and assembling method for fixed support of floating bridgeInfo
- Publication number
- CN118029268B CN118029268B CN202410014612.XA CN202410014612A CN118029268B CN 118029268 B CN118029268 B CN 118029268B CN 202410014612 A CN202410014612 A CN 202410014612A CN 118029268 B CN118029268 B CN 118029268B
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- Prior art keywords
- lifting
- floating
- lifting frame
- pier column
- spliced
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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
- E01D15/00—Movable or portable bridges; Floating bridges
- E01D15/14—Floating bridges, e.g. pontoon bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
本发明公开了一种浮桥的固定支架吊装拼装方法，包括以下步骤：水上搭设提升架；通过提升架上的提升装置和位移系统进行浮墩下部的墩柱的接高作业；在已拼装浮桥体的主梁段的对接端安装桥面吊机；通过提升架上的提升装置和位移系统以及桥面吊机将待拼装主梁节段与上部墩柱进行连接；通过提升架上的提升装置和位移系统将浮墩下部与上部墩柱进行连接；通过提升架上的提升装置和位移系统以及桥面吊机共同调节待拼装主梁节段与已拼装浮桥体的主梁段之间的轴线；待拼装主梁节段与已拼装浮桥体的主梁段之间焊接连接；将拼装完成的浮桥体向远离提升架的方向拖离。本发明解决了高墩柱与浮筒无法整体拖航的问题，以及存在较大纵坡的浮桥主梁拼装困难的问题。
The present invention discloses a method for hoisting and assembling a fixed support of a floating bridge, comprising the following steps: setting up a lifting frame on water; connecting the pier column at the lower part of the floating pier by means of a lifting device and a displacement system on the lifting frame; installing a bridge crane at the butt end of the main beam section of the assembled floating bridge body; connecting the main beam section to be assembled with the upper pier column by means of the lifting device and the displacement system on the lifting frame and the bridge crane; connecting the lower part of the floating pier with the upper pier column by means of the lifting device and the displacement system on the lifting frame; jointly adjusting the axis between the main beam section to be assembled and the main beam section of the assembled floating bridge body by means of the lifting device and the displacement system on the lifting frame and the bridge crane; welding and connecting the main beam section to be assembled with the main beam section of the assembled floating bridge body; and dragging the assembled floating bridge body away from the lifting frame. The present invention solves the problem that high pier columns and pontoons cannot be towed as a whole, and the problem that it is difficult to assemble the main beam of a floating bridge with a large longitudinal slope.
Description
Technical Field
The invention relates to a method for hoisting and assembling a fixed bracket of a floating bridge.
Background
In recent 30 years, floating bridges are beginning to be applied to the construction of modern infrastructures, and the technology of the floating bridges is rapidly developed and gradually tends to be mature, so that the floating bridges can be used as an important component of the modern infrastructures. Nevertheless, the data of the existing floating bridges, especially in terms of construction records, environmental conditions, durability, operation and performance, are very limited compared to land bridges, including cable-stayed bridges and suspension bridges. At present, the number of long floating bridges in the world is very limited, and only about 20 bridges are provided.
Most of foreign built floating bridges are continuous floating structures, square floating pontoons at the lower parts of the floating bridges are connected end to form the continuous floating structures, the upper parts of the floating pontoons can directly bear traffic loads of vehicles, and bridge piers or frame structures and the like can also be arranged to lift bridge deck elevations.
In the existing construction process of the floating bridge, a spliced structure is generally adopted, floating bridge connectors are arranged between the floating bridge monomers, and the floating bridge connectors butt-joint the floating bridge monomers with each other to form an integral floating bridge structure. Because the two ends of the floating bridge are connected with the shore connection structures on the shore, the closer to the two ends of the floating bridge, the larger the longitudinal slope of the floating bridge is, the higher the pier column on the pontoon is, the general floating pushing installation process cannot be adopted to complete the assembly operation of the main beam and the pontoon, and meanwhile, the towing stability of the high pier pontoon in the floating transportation process is poor, and the pier column and the pontoon cannot be towed integrally.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a floating bridge fixing bracket hoisting and assembling method, which not only solves the problem that a high pier column and a pontoon cannot integrally tow, but also solves the problem that a floating bridge main beam with a larger longitudinal slope is difficult to assemble.
The invention discloses a fixed bracket hoisting assembly method of a floating bridge, which is used for splicing a plurality of sections of floating bridge units into a floating bridge whole, wherein each section of floating bridge unit comprises a girder section and a floating pier connected to the bottom surface of the girder section, each floating pier comprises a pontoon and a pier column fixed between the top surface of the pontoon and the bottom surface of the girder section, the pier column is formed by splicing a section of lower half pier column and a section of upper half pier column, and the assembly method comprises the following steps:
The method comprises the steps of firstly, erecting a lifting frame on water, wherein the lifting frame is fixed on the water bottom in a piling mode, is in a shape of a door and is transversely and transversely arranged, and comprises two side frames, two cross beams bridged between the tops of the two side frames, a lifting platform movably arranged between the two cross beams, a lifting device arranged on the lifting platform and a displacement system arranged between the two cross beams and the lifting platform;
Step two, hauling the lower half pier column to the lower part of the lifting frame through the barge, lifting the lower half pier column through a lifting device on the lifting frame, and withdrawing the barge from the working range of the lifting frame;
Step three, a pontoon is hauled to the lower part of the lifting frame, and the pontoon is temporarily fixed between two side frames of the lifting frame by utilizing a steel wire rope;
Step four, slowly lowering the lower half pier column through a lifting device on the lifting frame, adjusting the butt joint precision of the lower half pier column and the pontoon through adjusting a displacement system on the lifting frame when the lower half pier column approaches the pontoon, welding and assembling the lower half pier column and the pontoon to form the lower part of the floating pier, then releasing a lifting point between the lifting device and the lower half pier column, releasing a steel wire rope for fixing the pontoon, and dragging the assembled lower part of the floating pier out of the working range of the lifting frame;
step five, towing the assembled floating bridge body into position by utilizing a barge, anchoring and positioning, and then installing a bridge deck crane on the top surface of the butt joint end of the main beam section of the assembled floating bridge body;
step six, dragging the girder segments to be spliced into the working range of a lifting frame, wherein the lifting hooks of a lifting device on the lifting frame and the lifting hooks of a bridge deck crane are in one-to-one correspondence with lifting lug hooks on two ends of the top surface of the girder segments to be spliced, and the lifting hooks of the lifting device and the bridge deck crane lift the girder segments to be spliced at the same time;
Step seven, hauling the upper half pier column in place, and then welding and connecting the upper half pier column with the pier column on the bottom surface of the girder segment to be spliced;
Step eight, firstly dragging the lower part of the assembled floating pier to be in place, temporarily fixing the lower part of the floating pier between two side frames of a lifting frame by utilizing a steel wire rope, slowly lowering a lifting hook of a lifting device of the lifting frame, adjusting a displacement system on the lifting frame, completing the relative positioning of an upper half pier column on a girder section to be spliced and an upper half pier column on the lower part of the floating pier, and then performing welding connection between the lower half pier column and the upper half pier column;
Step nine, firstly, adjusting elevation of a main girder segment to be spliced by utilizing a bridge deck crane, enabling height difference between the main girder segment to be spliced and a main girder segment of an spliced floating bridge body to meet standard splicing error requirements, adjusting a displacement system of a fixed lifting frame, enabling an axis of the main girder segment of the single body of the floating bridge to be spliced and an axis of the main girder segment of the spliced floating bridge body to meet design and standard requirements, and then completing welding work between the main girder segment to be spliced and the main girder segment of the spliced floating bridge body to complete butt joint installation of a main girder;
step ten, firstly releasing the lifting hook of the lifting device and the lifting hook of the bridge deck crane, and then dragging the assembled floating bridge away from the lifting frame in a direction away from the lifting frame;
Step eleven, the bridge deck crane walks forward to the butt joint end of the main girder section of the assembled floating bridge body;
And step twelve, repeating the step two to the step eleven, and carrying out splicing construction of the next section of girder.
According to the floating bridge fixing support hoisting and assembling method, in the step one, each side frame comprises four steel pipe piles which are arranged in a two-row and two-column mode and two longitudinal beams which are correspondingly bridged between the tops of the two steel pipe piles.
According to the floating bridge fixing support hoisting and assembling method, the lifting device comprises a lifting jack, a lifting steel wire rope and a steel wire rope anchor when the steps are carried out.
According to the floating bridge fixing support hoisting and assembling method, in the step one, the displacement system comprises a transverse adjusting oil cylinder arranged between the cross beam and the lifting platform and a longitudinal adjusting oil cylinder arranged between the lifting platform and the lifting device.
The fixed bracket hoisting and assembling method of the floating bridge has the characteristics that the lifting frame is erected on water, the lifting device and the displacement system on the lifting frame are used for carrying out the lifting operation of the pier column at the lower part of the floating pier, then the lifting device and the displacement system on the lifting frame are used for sequentially connecting the section of the main beam to be assembled with the upper pier column and the lower part of the floating pier with the upper pier column, then the bridge deck crane is arranged at the butt joint end of the main beam section of the assembled floating bridge body, and the lifting device and the displacement system on the lifting frame and the bridge deck crane are used for jointly regulating the axes between the section of the main beam to be assembled and the main beam end of the assembled floating bridge body and carrying out welding connection, so that the assembling precision of the main beam is effectively ensured, the problem that the high pier column and the pontoon cannot integrally tow is solved, and the problem that the main beam of the floating bridge with a larger longitudinal slope is difficult to assemble is solved.
Drawings
Fig. 1 is an elevation view of a lifting bracket erected at one time to perform the steps of the present invention, wherein fig. 1 (a) is a side view of the lifting bracket, and fig. 1 (b) is a right side view of fig. 1 (a);
fig. 2 is a state diagram when the second step of the present invention is performed, wherein fig. 2 (a) is a side view of the state when the second step of the present invention is performed, and fig. 2 (b) is a right side view of fig. 2 (a);
fig. 3 is a state diagram when the step three of the present invention is performed, wherein fig. 3 (a) is a state side view when the step three of the present invention is performed, and fig. 3 (b) is a right side view of fig. 3 (a);
fig. 4 is a state diagram at the time of performing step four of the present invention, in which fig. 4 (a) is a state side view at the time of performing step four of the present invention, and fig. 4 (b) is a right side view of fig. 4 (a);
FIG. 5 is a side view of the state in which step five of the present invention is performed;
FIG. 5a is a side view of the deck crane when carrying out step five of the invention;
FIG. 6 is a side view of the first state of the invention as it proceeds to step six;
FIG. 7 is a side view of the second state of the invention in which step six is performed;
FIG. 8 is a side view of the first state of the invention as it proceeds to step seven;
FIG. 9 is a side view of the second state when step seven of the present invention is performed;
FIG. 10 is a side view of the state in which step nine of the present invention is performed;
FIG. 11 is a side view of the state in which step ten of the present invention is performed;
Fig. 12 is a side view of a state in which the step of the present invention is performed at ten times.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 12, the method for hoisting and assembling a fixed bracket of a floating bridge according to the present invention is used for splicing multiple segments of floating bridge units into a floating bridge unit, wherein each segment of floating bridge unit comprises a girder segment 1A and a floating pier 1B connected to the bottom surface of the girder segment 1A, each floating pier 1B comprises a pontoon 11 and a pier column 12 fixed between the top surface of the pontoon 11 and the bottom surface of the girder segment 1A, and the pier column 12 is formed by splicing a lower half pier column 121 and an upper half pier column 122.
The invention relates to a method for hoisting and assembling a fixed bracket of a floating bridge, which comprises the following steps:
The method comprises the steps of firstly, erecting a lifting frame 2 on water, wherein the lifting frame 2 is fixed on the water bottom in a piling mode, the lifting frame 2 is in a door shape and transversely arranged in a bridge direction, and comprises two side frames 2A, two cross beams 20 which are bridged between the tops of the two side frames 2A, a lifting platform 21 which is movably arranged between the two cross beams 20, a lifting device 2B which is arranged on the lifting platform 21, and a displacement system which is arranged between the two cross beams 20 and the lifting platform 21, each side frame 2A comprises four steel pipe piles 211 which are arranged in a two-to-two-row mode, and two longitudinal beams 212 which are bridged between the tops of the two steel pipe piles 211 in a one-to-one correspondence mode, a connecting beam 213 is arranged between the four steel pipe piles 211, the lifting device 2B comprises lifting jacks 221, lifting steel wire ropes 222 and steel wire rope anchors 223, and the displacement system comprises two transverse adjusting cylinders 231 which are arranged between the two cross beams 20 and the lifting platform 21 in a one-to-one correspondence mode and longitudinal adjusting cylinders 232 which are arranged between the lifting jack 21 and the lifting jack 221 of the lifting device 2B (see figure 1);
Step two, hauling the lower half pier stud 121 to the lower part of the lifting frame 2 through the barge 200, lifting the lower half pier stud 121 through a lifting device 2B on the lifting frame 2, and withdrawing the barge from the working range of the lifting frame 2 (see figure 2);
step three, hauling a pontoon 11 below the lifting frame 2, temporarily fixing the pontoon 11 between two side frames 2A of the lifting frame 2 by using a steel wire rope 110, and limiting the pontoon 11 in the horizontal direction (see figure 3);
Step four, slowly lowering the lower half pier column 121 through a lifting device 2B on the lifting frame 2, adjusting the butt joint precision of the lower half pier column 121 and the pier column bottom positioned at the center of the top surface of the pontoon 11 through adjusting a displacement system on the lifting frame 2 when the lower half pier column 121 approaches the pontoon 11, welding and assembling the lower half pier column 121 and the pier column bottom to form a floating pier lower part (see fig. 4), then releasing a lifting point between the lifting device 2B and the lower half pier column 121, releasing a steel wire rope 110 for fixing the pontoon 11, and dragging the assembled floating pier lower part out of the working range of the lifting frame 2;
Step five, firstly dragging the assembled floating bridge body 100 into position by using a barge, anchoring and positioning, and then installing a bridge deck crane 3 on the top surface of the butt joint end of the main beam section of the assembled floating bridge body 100, wherein the bridge deck crane 3 is installed on a movable bracket 30 (see fig. 5 and 5 a);
step six, hauling the girder segment 1A to be spliced into the working range of the lifting frame 2, wherein the lifting hooks of the lifting device 2B and the lifting hooks of the bridge deck crane 3 on the lifting frame 2 are in one-to-one correspondence with the lifting lug hooks on the two ends of the top surface of the girder segment 1A to be spliced (see figure 6), and the lifting hooks of the lifting device 2B and the bridge deck crane 3 lift the girder segment 1A to be spliced at the same time (see figure 7);
Step seven, firstly hauling the upper half pier column 122 into position (see fig. 8), and then welding and connecting the upper half pier column 122 with the pier column on the bottom surface of the main beam section 1A to be spliced (see fig. 9);
Step eight, firstly dragging the lower part of the assembled floating pier to be in place, temporarily fixing the lower part of the floating pier between two side frames 2A of a lifting frame 2 by utilizing a steel wire rope, limiting the lower part of the floating pier in the horizontal direction, slowly lowering a lifting hook of a lifting device 2B of the lifting frame 2, adjusting a displacement system on the lifting frame 2, completing the relative positioning of an upper half pier column 122 on a main beam section 1A to be spliced and an upper half pier column 121 on the lower part of the floating pier, and then performing welding connection between the lower half pier column 121 and the upper half pier column 122;
step nine, firstly, adjusting elevation of a main girder segment 1A to be spliced by using a bridge deck crane 3 to enable height difference between the main girder segment and a main girder segment of the spliced floating bridge body 100 to meet the standard splicing error requirement, adjusting a displacement system of a fixed lifting frame 2 to enable the axis of the main girder segment 1A to be spliced and the axis of the main girder segment of the spliced floating bridge body 100 to meet the design and standard requirements, and then completing welding work between the main girder segment 1A to be spliced and the main girder segment of the spliced floating bridge body 100 to complete butt joint installation of the main girder (see figure 10);
step ten, firstly releasing the lifting hook of the lifting device 2B and the lifting hook of the bridge deck crane 3, and then dragging the assembled floating bridge away from the lifting frame 2 (see figure 11);
step eleven, the bridge deck crane 3 moves forward to the butt joint end of the main girder section of the assembled floating bridge body (see fig. 12);
And step twelve, repeating the step two to the step eleven, and carrying out splicing construction of the next section of girder.
The above embodiments are provided for illustrating the present invention and not for limiting the present invention, and various changes and modifications may be made by one skilled in the relevant art without departing from the spirit and scope of the present invention, and thus all equivalent technical solutions should be defined by the claims.
Claims (4)
1. A method for hoisting and assembling a fixed bracket of a floating bridge is used for splicing a plurality of sections of floating bridge units into a floating bridge whole, each section of floating bridge unit comprises a girder segment and a floating pier connected to the bottom surface of the girder segment, each floating pier comprises a pontoon and a pier column fixed between the top surface of the pontoon and the bottom surface of the girder segment, and the pier column is formed by splicing a section of lower half pier column and a section of upper half pier column, and is characterized in that the assembling method comprises the following steps:
The method comprises the steps of firstly, erecting a lifting frame on water, wherein the lifting frame is fixed on the water bottom in a piling mode, is in a shape of a door and is transversely and transversely arranged, and comprises two side frames, two cross beams bridged between the tops of the two side frames, a lifting platform movably arranged between the two cross beams, a lifting device arranged on the lifting platform and a displacement system arranged between the two cross beams and the lifting platform;
Step two, hauling the lower half pier column to the lower part of the lifting frame through the barge, lifting the lower half pier column through a lifting device on the lifting frame, and withdrawing the barge from the working range of the lifting frame;
Step three, a pontoon is hauled to the lower part of the lifting frame, and the pontoon is temporarily fixed between two side frames of the lifting frame by utilizing a steel wire rope;
Step four, slowly lowering the lower half pier column through a lifting device on the lifting frame, adjusting the butt joint precision of the lower half pier column and the pontoon through adjusting a displacement system on the lifting frame when the lower half pier column approaches the pontoon, welding and assembling the lower half pier column and the pontoon to form the lower part of the floating pier, then releasing a lifting point between the lifting device and the lower half pier column, releasing a steel wire rope for fixing the pontoon, and dragging the assembled lower part of the floating pier out of the working range of the lifting frame;
step five, towing the assembled floating bridge body into position by utilizing a barge, anchoring and positioning, and then installing a bridge deck crane on the top surface of the butt joint end of the main beam section of the assembled floating bridge body;
step six, dragging the girder segments to be spliced into the working range of a lifting frame, wherein the lifting hooks of a lifting device on the lifting frame and the lifting hooks of a bridge deck crane are in one-to-one correspondence with lifting lug hooks on two ends of the top surface of the girder segments to be spliced, and the lifting hooks of the lifting device and the bridge deck crane lift the girder segments to be spliced at the same time;
Step seven, hauling the upper half pier column in place, and then welding and connecting the upper half pier column with the pier column on the bottom surface of the girder segment to be spliced;
Step eight, firstly dragging the lower part of the assembled floating pier to be in place, temporarily fixing the lower part of the floating pier between two side frames of a lifting frame by utilizing a steel wire rope, slowly lowering a lifting hook of a lifting device of the lifting frame, adjusting a displacement system on the lifting frame, completing the relative positioning of an upper half pier column on a girder section to be spliced and an upper half pier column on the lower part of the floating pier, and then performing welding connection between the lower half pier column and the upper half pier column;
Step nine, firstly, adjusting elevation of a main girder segment to be spliced by utilizing a bridge deck crane, enabling height difference between the main girder segment to be spliced and a main girder segment of an spliced floating bridge body to meet standard splicing error requirements, adjusting a displacement system of a fixed lifting frame, enabling an axis of the main girder segment of the single body of the floating bridge to be spliced and an axis of the main girder segment of the spliced floating bridge body to meet design and standard requirements, and then completing welding work between the main girder segment to be spliced and the main girder segment of the spliced floating bridge body to complete butt joint installation of a main girder;
step ten, firstly releasing the lifting hook of the lifting device and the lifting hook of the bridge deck crane, and then dragging the assembled floating bridge away from the lifting frame in a direction away from the lifting frame;
Step eleven, the bridge deck crane walks forward to the butt joint end of the main girder section of the assembled floating bridge body;
And step twelve, repeating the step two to the step eleven, and carrying out splicing construction of the next section of girder.
2. The method of installing and installing a floating bridge fixed bracket according to claim 1, wherein each side frame includes four steel pipe piles arranged in two rows and two columns and two stringers bridging between tops of the two columns of steel pipe piles in one-to-one correspondence.
3. The method of lifting and splicing a fixed bracket of a floating bridge according to claim 1, wherein the lifting device comprises a lifting jack, a lifting wire rope and a wire rope anchor when the steps are performed.
4. The method of lifting and assembling a fixed bracket of a floating bridge according to claim 1, wherein the displacement system comprises a transverse adjusting cylinder installed between the cross beam and the lifting platform and a longitudinal adjusting cylinder installed between the lifting platform and the lifting device when the steps are performed.
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| CN202410014612.XA CN118029268B (en) | 2024-01-04 | 2024-01-04 | Hoisting and assembling method for fixed support of floating bridge |
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| CN202410014612.XA CN118029268B (en) | 2024-01-04 | 2024-01-04 | Hoisting and assembling method for fixed support of floating bridge |
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| CN118029268B true CN118029268B (en) | 2025-07-15 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102041779A (en) * | 2010-12-29 | 2011-05-04 | 中铁大桥局集团第二工程有限公司 | Erection crane and construction method thereof |
| CN102303691A (en) * | 2011-06-17 | 2012-01-04 | 中铁一局集团有限公司 | Floating drilling platform and construction technology used for bridge pier construction in water |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10280328A (en) * | 1997-04-01 | 1998-10-20 | Nkk Corp | Bridge removal and erection methods and barge equipment used for this method |
| CN109778718A (en) * | 2019-03-05 | 2019-05-21 | 中铁四局集团有限公司 | A kind of construction method of large-span continuous steel box girder main span pure cantilever assembling mid-span closure |
| CN116084289A (en) * | 2023-01-09 | 2023-05-09 | 合建卡特工业股份有限公司 | Steel truss girder lifting and installing process |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041779A (en) * | 2010-12-29 | 2011-05-04 | 中铁大桥局集团第二工程有限公司 | Erection crane and construction method thereof |
| CN102303691A (en) * | 2011-06-17 | 2012-01-04 | 中铁一局集团有限公司 | Floating drilling platform and construction technology used for bridge pier construction in water |
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