CN113756190A - Small-spacing multi-bridge parallel section box girder synchronous frame transporting construction method - Google Patents
Small-spacing multi-bridge parallel section box girder synchronous frame transporting construction method Download PDFInfo
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- CN113756190A CN113756190A CN202110891333.8A CN202110891333A CN113756190A CN 113756190 A CN113756190 A CN 113756190A CN 202110891333 A CN202110891333 A CN 202110891333A CN 113756190 A CN113756190 A CN 113756190A
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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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Abstract
The invention relates to a small-spacing multi-bridge parallel section box girder synchronous transportation and erection construction method, which comprises the following steps of: 1) erecting a first double-line bridge; 2) after the first double-line bridge is erected, the bridge erecting machine moves right to erect a second double-line bridge, and the beam is transported through the first double-line bridge; 3) after the second double-line bridge is erected, the bridge erecting machine moves left to erect a second single-line bridge and transports the beam through the first double-line bridge; 4) after the second single-line bridge is erected, the bridge erecting machine moves to the right to erect a third single-line bridge extended from the second double-line bridge, and the beam is transported through the first double-line bridge; 5) after the third single-line bridge is erected, the bridge erecting machine moves to the right to erect a fourth single-line bridge extended from the second double-line bridge, and the beam is transported through the first double-line bridge; 6) after the fourth single-line bridge is erected, the bridge erecting machine moves left to erect the first single-line bridge and transports the beam through the first double-line bridge.
Description
Technical Field
The invention relates to a construction method for multi-bridge erection, in particular to a synchronous frame transporting construction method for small-spacing multi-bridge parallel section box girders.
Background
At present, the condition of multi-bridge co-construction and multi-bridge parallel line synchronous construction of a railway bridge is increased day by day, the distance between the bridge and the bridge is too narrow, and the construction requirement of two bridge erecting machines for synchronous girder erection cannot be met. Meanwhile, the existing bridge and the structures thereof need to be penetrated in the girder erection process, so that the girder transportation work in the girder erection process is hindered, and the construction progress of the girder erection is influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a small-spacing multi-bridge parallel section box girder synchronous transportation construction method, optimizing a box girder erection scheme according to a girder erection sequence, and realizing simple equipment adjustment operation during cross operation, high construction efficiency and high safety.
The technical scheme for solving the technical problems is as follows: 1. a synchronous frame transporting construction method for small-spacing multi-bridge parallel section box girders is characterized by comprising the following steps:
1) erecting a first double-line bridge;
2) after the first double-line bridge is erected, the bridge erecting machine moves right to erect a second double-line bridge, and the beam is transported through the first double-line bridge;
3) after the second double-line bridge is erected, the bridge erecting machine moves left to erect a second single-line bridge and transports the beam through the first double-line bridge;
4) after the second single-line bridge is erected, the bridge erecting machine moves to the right to erect a third single-line bridge extended from the second double-line bridge, and the beam is transported through the first double-line bridge;
5) after the third single-line bridge is erected, the bridge erecting machine moves to the right to erect a fourth single-line bridge extended from the second double-line bridge, and the beam is transported through the first double-line bridge;
6) after the fourth single-line bridge is erected, the bridge erecting machine moves left to erect the first single-line bridge and transports the beam through the first double-line bridge.
The invention has the beneficial effects that: in the small-spacing multi-bridge erection, because the spacing between parallel bridges is too small, two or more bridge erecting machines cannot be accommodated at the same time, the erection scheme of box girders is optimized according to the bridging sequence, the cross operation is carried out, the finished line bridge is utilized to carry out girder transportation, the synchronous erection construction is carried out, the construction efficiency is high, and the safety is high.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, two ends of the line bridge are respectively provided with a beam field and a beam lifter transverse moving area, and the beam lifter transverse moving area is provided with a beam lifter;
and when the bridge girder erection machine moves leftwards or rightwards, returning to the beam yard to turn around or realizing the left movement or the right movement through the girder lifting machine.
The bridge girder erection machine has the beneficial effects that the traverse area of the girder erection machine is positioned in a smaller range of the cross area of the parallel section, and the bridge girder erection machine can perform next bridge girder erection operation after turning around in a girder yard or the traverse area of the girder erection machine according to actual conditions, so that the efficiency is high, and the time is saved.
Further, in the steps 1) to 6), the bridge is erected in the small-mileage direction first, and then in the large-mileage direction.
The beneficial effect who adopts above-mentioned further scheme is that the frame bridge crane need return to the beam yard or carry out the turn around through the region of carrying the beam crane sideslip, and the fortune roof beam car is turned back the transportation in two directions to do benefit to the frame bridge crane and move left or move right.
When the roof beam transporting vehicle fortune roof beam in-process and the bridge girder erection machine mutual interference, the rotatory 2# landing legs of bridge girder erection machine of accessible shorten the width of bridge girder erection machine and dodge to guarantee that fortune roof beam vehicle and bridge girder erection machine homoenergetic pass through smoothly, and then can satisfy and carry out the construction of putting up the roof beam and do not influence each other simultaneously in the inseparable many circuits of parallel district of bridge. When the bridge girder erection machine needs to penetrate through the existing gate pier, the height of the bridge girder erection machine can be integrally adjusted through all the supporting legs of the telescopic bridge girder erection machine, and the bridge girder erection machine can penetrate through the existing gate pier.
Further, the width of the main supporting leg of the bridge girder erection machine extending out of the bridge floor is less than 2.4 m.
The beneficial effect of adopting above-mentioned further scheme is that the line bridge interval of parallel section transships, and the main leg of bridging machine stretches out the bridge floor overlength, and the fortune roof beam car can't stagger with the bridging opportunity vehicle-hour.
Further, when the beam transporting vehicle transports the beam, the beam transporting vehicle is a separated beam transporting vehicle.
The beneficial effect of adopting above-mentioned further scheme is that the walking of disconnect-type fortune roof beam car is comparatively nimble, adapts to the line fortune roof beam of small radius, and the roof beam car can assist the frame bridge crane to accomplish in the less space in place and end fall etc. in the field simultaneously.
Further, the bridge yard is provided with a bridge region on the lifting beam, and the bridge region on the lifting beam comprises at least one lifting beam machine crossing four bridges and six lines and at least one single-double common shipping pedestal.
Adopt above-mentioned further scheme's beneficial effect to go to the bridge to be used for removing the case roof beam from the beam yard to the fortune roof beam car on, transport to the assigned position through sending pedestal and fortune roof beam car, it is simple quick.
Furthermore, the transverse moving area of the beam lifting machine is provided with at least one beam lifting machine crossing four bridges and six lines.
The beneficial effect of adopting above-mentioned further scheme is that the bale lifter is used for the bale lifter, also is convenient for the bridging machine to turn around simultaneously.
Further, step 6) is followed still including the support grouting, and after the intensity of grout material reached 20Mpa, demolish the grout template.
The beneficial effect who adopts above-mentioned further scheme is that after the support grouting, each line bridge section is connected firmly, is convenient for follow-up further erection.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention;
fig. 2 is a structural diagram of the first embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a first two-wire bridge; 2. a second two-wire bridge; 3. a second single wire bridge; 4. a third single wire bridge; 5. a fourth single-wire bridge; 6. a first single wire bridge; 7. a beam field; 8. a beam lifter transverse moving area; 9. and (5) lifting the girder to the bridge area.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and simplicity of description, and do not indicate or imply that the system or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in FIG. 1, a synchronous frame transporting construction method for small-spacing multi-bridge parallel section box girders comprises the following steps:
1) erecting a first double-line bridge 1; and the erection of the first double-line bridge is completed through the matching of the bridge girder erection machine and the subsequent girder transporting vehicle.
2) After the first double-line bridge 1 is erected, the bridge girder erection machine can return to a beam yard to turn around and move rightwards, the bridge girder erection machine moves rightwards to erect the second double-line bridge 2, the beams are transported through the first double-line bridge 1, the width of the main supporting leg of the bridge girder erection machine extending out of the bridge floor is smaller than 2.4m, and the width of the main supporting leg of the bridge girder erection machine extending out of the bridge floor cannot be too large due to the fact that the beam transporting vehicles or the bridge girder erection machine on the adjacent line bridge of the box girder flange plate of the first double-line bridge 1 interfere with each other.
3) After the second double-line bridge 2 is erected, the bridge erecting machine moves leftwards to erect a second single-line bridge 3, and the beam is transported through the first double-line bridge 1, and when the beam is transported by the beam transporting vehicle, the beam transporting vehicle is a separated beam transporting vehicle. The separated girder transporting vehicle can walk flexibly and adapt to small-radius line girder transporting, and meanwhile, the girder transporting vehicle can assist the bridge girder erection machine to finish end falling in a field in a small space.
4) After the second single-line bridge 3 is erected, the bridge erecting machine moves to the right to erect a third single-line bridge 4 extended from the second double-line bridge 2, and the beam is transported through the first double-line bridge 1.
When the roof beam transporting vehicle fortune roof beam in-process and the bridge girder erection machine mutual interference, the rotatory 2# landing legs of bridge girder erection machine of accessible shorten the width of bridge girder erection machine and dodge to guarantee that fortune roof beam vehicle and bridge girder erection machine homoenergetic pass through smoothly, and then can satisfy and carry out the construction of putting up the roof beam and do not influence each other simultaneously in the inseparable many circuits of parallel district of bridge. When the bridge girder erection machine needs to penetrate through the existing gate pier, the height of the bridge girder erection machine can be integrally adjusted through all the supporting legs of the telescopic bridge girder erection machine, and the bridge girder erection machine can penetrate through the existing gate pier.
5) After the third single-line bridge 4 is erected, the bridge erecting machine moves to the right to erect a fourth single-line bridge 5 extended from the second double-line bridge 2, and the beams are transported through the first double-line bridge 1. 6) After the fourth single-line bridge 5 is erected, the bridge erecting machine moves left to erect a first single-line bridge 6 and transports the beam through the first double-line bridge 1. And 6) grouting by using a support, and removing the grouting template after the strength of the grouting material reaches 20 Mpa. In the steps 1) to 6), the erection in the small-mileage direction and the erection in the large-mileage direction are adopted during bridge erection, the bridge erecting machine needs to return to a beam yard or turn around through a beam lifting machine transverse moving area, and the beam transporting vehicle returns back and transports in two directions, so that the bridge erecting machine can move left or right.
Two ends of the line bridge are respectively provided with a beam field 7 and a beam lifting machine transverse moving area 8, and the beam lifting machine transverse moving area 8 is provided with a beam lifting machine. In one embodiment, the traverser area 8 of the beam lifting machine is provided with at least one beam lifting machine spanning four bridges and six lines.
When the bridge girder erection machine moves leftwards or rightwards, the bridge girder returns to the girder yard 7 to turn around or the girder erection machine moves leftwards or rightwards, and the girder yard 7 is also used for prefabricating the line girder. The beam yard 7 is provided with a lifting beam upper bridge area 9, and the lifting beam upper bridge area 9 comprises at least one lifting beam machine crossing four bridges and six lines and at least one single-double common shipping pedestal.
Example one
The Jingxiong intercity railway male security station collects the elevated stations of a plurality of lines such as male businessmen, masculine intercity, motor train running lines and the like, and a new cover room south-north dyke flood diversion road (about 1.4km wide) is arranged at the south side of the male security station and a motor train station is arranged at the same time. The male line outlet is provided with four bridges and six lines, and parallel 4-connection continuous beams (two beams and two beams or two beams) with the maximum span of 80 meters are respectively adopted at the south dike and the north dike of the new covered house to span the flood discharge dike. The crossed bridges of the lines behind the south dike of the new covered house are changed from the original four-bridge six-line bridge to the original five-bridge six-line bridge. And because construction period requirements require that all line bridges are constructed simultaneously, in order to meet the requirements of precast beam construction and erection period, a beam field is arranged at the position where a double-wire bridge of an androgen and a single-wire bridge of a motor train running left line are staggered, and the requirement that single-wire and double-wire precast beams simultaneously carry out beam transportation and erection construction on the bridge is met. Because the bridges are staggered up and down and are parallel to each other, the bridge girder erection machine needs to shuttle through the gate pier construction when the box girder is erected, the supporting legs of the bridge girder erection machine need to avoid obstacles such as a continuous beam which is under construction at one side of the side when the bridge girder erection machine passes through the continuous beam, and the problem that the line spacing of the parallel bridges does not meet the construction requirement of transporting the beams of one bridge girder and the other bridge of the parallel double-line bridge is solved.
The parallel line segments (the length of the four-bridge six-line segment is about 1.4km) are respectively a stone male left line (single line), a motor car left line (single line), a male commercial line (double line), a motor car right line and a stone male right line (double first and single later), the line spacing is 14m, 5m and 5m respectively, and the length of the five-bridge six-line segment is about 1 km. After the bridge group passes through a south dike of the new covered house, the elevation of the left single-line bridge of the emasculation is gradually increased to form two bridges of an upper cross-male commercial double-line bridge and a motor train running left-line single-line bridge, the elevation of the motor train running left-line single-line bridge is gradually decreased to form a lower cross-male commercial double-line bridge, and the crossed pier columns are all gate-type piers, wherein the minimum clearance of the gate-type piers is 8.4 m.
In the concrete construction process of the parallel section, 1) erecting a male commercial line firstly, and after the erection of the parallel section of the male commercial line is finished, 2) erecting a common line section of a right line of the motor vehicle and a right line of the stone male by a right moving frame of the bridge erecting machine, and transporting the beams through the male commercial line; 3) after the collinear section of the right bullet train line and the mason right line is erected, the left bullet train line is erected and transported through the mason business line; 4) erecting a right line of the bullet train after the left line frame of the bullet train is completely set, and transporting the beam through a male commercial line when the right line of the bullet train is erected; 5) after the right line frame of the bullet train is arranged, erecting a mason right line; 6) and after the right line frame of the stone male is finished, finally erecting the left line of the stone male, and similarly transporting the beam through the male commercial line.
And when the erection of the male commercial double lines is finished, the bridge girder erection machine is transferred to the stone male right line and the motor car right line to erect the stone male right line and the motor car right line, and the girder transporting vehicle transports the girders through the male commercial line. When the girder transporting vehicle and the bridge girder erection machine are intersected, the girder transporting vehicle cannot normally pass through due to the interference of the flange plates of the girder by the No. 2 supporting legs of the bridge girder erection machine. At the moment, the bridge girder erection machine can horizontally rotate the No. 2 supporting legs to 70 degrees in a non-girder erection state, so that the width of the No. 2 supporting legs is narrowed from 14.4m to 7.6m, the width of the bridge girder erection machine is shortened, and a girder transporting vehicle can smoothly pass through the bridge girder erection machine. After the girder transporting vehicle passes through the 2# supporting leg, the bridge girder erection machine can rotate the 2# supporting leg to a girder erection state by self, and the via hole of the bridge girder erection machine is completed.
When the upper part of the line meets the gate-type piers, the bridging machine is limited by the clearance and the clear width of the gate-type piers, and the height and the width of the No. 2 supporting legs of the bridge erecting machine in a normal beam erecting state can not normally pass through the machine. The lowest clear height is taken as an example, when the bridge girder erection machine passes through the gate pier, three support legs of the bridge girder erection machine can be contracted, the maximum height after contraction is changed from 11.14m to 7.6m, and the requirement of field girder erection construction can be met through the gate pier with the minimum clear height of 8.049 m.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A synchronous frame transporting construction method for small-spacing multi-bridge parallel section box girders is characterized by comprising the following steps:
1) erecting a first double-line bridge (1);
2) after the first double-line bridge (1) is erected, the bridge erecting machine moves right to erect a second double-line bridge (2), and the beam is transported through the first double-line bridge (1);
3) after the second double-line bridge (2) is erected, the bridge erecting machine moves left to erect a second single-line bridge (3), and the beam is transported through the first double-line bridge (1);
4) after the second single-line bridge (3) is erected, the bridge erecting machine moves to the right to erect a third single-line bridge (4) extended from the second double-line bridge (2), and the beam is transported through the first double-line bridge (1);
5) after the third single-line bridge (4) is erected, the bridge erecting machine moves to the right to erect a fourth single-line bridge (5) extended from the second double-line bridge (2), and the beam is transported through the first double-line bridge (1);
6) after the fourth single-line bridge (5) is erected, the bridge erecting machine moves left to erect a first single-line bridge (6), and the beam is transported through the first double-line bridge (1).
2. The small-spacing multi-bridge parallel section box girder synchronous frame transporting construction method according to claim 1, characterized in that: two ends of the line bridge are respectively provided with a beam yard (7) and a beam lifting machine transverse moving area (8), and the beam lifting machine transverse moving area (8) is provided with a beam lifting machine;
and when the bridge girder erection machine moves leftwards or rightwards, the bridge girder erection machine returns to the girder yard (7) to turn around or moves leftwards or rightwards through the girder lifting machine.
3. The small-spacing multi-bridge parallel section box girder synchronous frame transporting construction method according to claim 1, characterized in that: in the steps 1) to 6), the bridge is erected in the small-mileage direction first, and then in the large-mileage direction.
4. The small-spacing multi-bridge parallel section box girder synchronous frame transporting construction method according to claim 1, characterized in that: the width of the main supporting leg of the bridge girder erection machine extending out of the bridge deck is less than 2.4 m.
5. The small-spacing multi-bridge parallel section box girder synchronous frame transporting construction method according to any one of claims 1 to 4, characterized in that: when the beam transporting vehicle transports the beam, the beam transporting vehicle is a separated beam transporting vehicle.
6. The small-spacing multi-bridge parallel section box girder synchronous frame transporting construction method according to claim 2, characterized in that: the beam yard (7) is provided with a lifting beam upper bridge area (9), and the lifting beam upper bridge area (9) comprises at least one lifting beam machine crossing four bridges and six lines and at least one single-double common shipping pedestal.
7. The small-spacing multi-bridge parallel section box girder synchronous frame transporting construction method according to claim 6, characterized in that: the beam lifting machine transverse moving area (8) is provided with at least one beam lifting machine crossing four bridges and six lines.
8. The small-spacing multi-bridge parallel section box girder synchronous frame transporting construction method according to claim 1, characterized in that: and 6) grouting by using a support, and removing the grouting template after the strength of the grouting material reaches 20 Mpa.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110891333.8A CN113756190B (en) | 2021-08-04 | 2021-08-04 | Small-spacing multi-bridge parallel section box girder synchronous frame transporting construction method |
| PCT/CN2021/116670 WO2023010644A1 (en) | 2021-08-04 | 2021-09-06 | Synchronous transporting and erecting construction method for small-space multi-bridge parallel section box girder |
| LU502495A LU502495B1 (en) | 2021-08-04 | 2022-07-12 | Small-distance multi-bridge construction method for synchronously transporting and erecting box girders of parallel sections |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110891333.8A CN113756190B (en) | 2021-08-04 | 2021-08-04 | Small-spacing multi-bridge parallel section box girder synchronous frame transporting construction method |
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| Publication Number | Publication Date |
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| CN113756190A true CN113756190A (en) | 2021-12-07 |
| CN113756190B CN113756190B (en) | 2023-01-24 |
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| CN202110891333.8A Active CN113756190B (en) | 2021-08-04 | 2021-08-04 | Small-spacing multi-bridge parallel section box girder synchronous frame transporting construction method |
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| Country | Link |
|---|---|
| CN (1) | CN113756190B (en) |
| LU (1) | LU502495B1 (en) |
| WO (1) | WO2023010644A1 (en) |
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| JP4948041B2 (en) * | 2006-05-31 | 2012-06-06 | 日本車輌製造株式会社 | Bridge erection method |
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| Publication number | Publication date |
|---|---|
| CN113756190B (en) | 2023-01-24 |
| WO2023010644A1 (en) | 2023-02-09 |
| LU502495B1 (en) | 2023-01-12 |
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