CN214401451U - Rotatory construction frock of taking one's place of bridge strides - Google Patents
Rotatory construction frock of taking one's place of bridge strides Download PDFInfo
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- CN214401451U CN214401451U CN202120295938.6U CN202120295938U CN214401451U CN 214401451 U CN214401451 U CN 214401451U CN 202120295938 U CN202120295938 U CN 202120295938U CN 214401451 U CN214401451 U CN 214401451U
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Abstract
The utility model discloses a construction tool for rotary positioning of a spanning bridge, which is characterized in that a spanning bracket is arranged at the spanning position of a road, outer brackets are respectively arranged at two sides to form temporary brackets, and a track beam is arranged on the temporary brackets; the bridge end of the bridge pier and the rail beam are taken as supporting points to form a steel box beam assembling frame which is positioned on two sides of the road and is parallel to the road and used for assembling the half-section steel box beam; the one end that lies in the pier in half section steel box girder is rotatory central point end, can rotate on the pier, and the one end that lies in the track roof beam is rotatory expansion end, is supported on the track roof beam by rotatory gyro wheel, utilizes the horizontal hydraulic jack of installing on the track roof beam to promote rotatory gyro wheel and make the rotatory expansion end of half section steel box girder move ahead along the track roof beam to close the rotatory expansion end of two half section steel box girders midspan. The utility model discloses make the work progress safety high-efficient of strideing across the bridge, reduce the bridge construction and to the current interference of road.
Description
Technical Field
The utility model relates to a road construction technique is striden to letter steel box girder, and the more specifically construction frock that existing current road was strideed across to letter steel box girder under the complicated topography environment that says so.
Background
With the continuous perfection of traffic infrastructure and the continuous organization of road networks, it is more and more common to build bridges in environments with complex landforms or crossing existing traffic roads. When a bridge spans an existing traffic road, the traditional method comprises a bridge erecting frame method, a turning method, a support method, a pushing method and the like, but when the bridge is a simple beam and has a large span, the bridge erecting frame method and the turning method cannot meet the construction requirements; if the support method and the pushing method are adopted for construction, an assembling support or a pushing support needs to be erected on an existing passing road, the passing of the existing road is influenced to a certain extent, the passing road can be in a limited passing state for a long time, and the passing function of the road is greatly reduced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a for avoiding above-mentioned prior art not enough, provide one kind and be applicable to under the complicated topography environment existing current road is strideed across to simple steel box girder, reduce the rotatory construction frock of taking one's place of bridge of strideing across of bridge construction to the current interference of road.
The utility model discloses a solve technical problem and adopt following technical scheme:
the utility model discloses stride across rotatory construction frock of taking one's place of bridge's characteristics are that it includes:
the temporary support is characterized in that a midspan support is arranged at the midspan position of the road, and outer supports are respectively arranged at two sides of the road; arranging a track beam on the temporary support, wherein the beam center of the track beam is positioned on the midspan support, and the beam end part of the track beam is positioned on the outer side supports at two sides;
the steel box girder assembling frame is used for assembling a half-section steel box girder and is divided on two sides of a road and parallel to the road by taking bridge piers and beam ends of a track girder as supporting points;
the rotary positioning mechanism is used for setting one end of the half-section steel box girder, which is positioned at the pier, as a rotary central end and one end of the half-section steel box girder, which is positioned at the track girder, as a rotary movable end; a rotary supporting piece is arranged at the bottom of the rotary central end in the half-section steel box girder; the bottom of the rotary movable end in the half-section steel box girder is provided with a rotary roller which is supported on the track girder, and a horizontal hydraulic jack which is used for pushing the rotary roller to move forward along the track girder is arranged on the track girder.
The utility model discloses stride across the rotatory construction frock of taking one's place of bridge structural feature also lies in: the rotary idler wheel is characterized in that an upper rotating body and a lower rolling body are respectively arranged on an idler wheel seat, the lower rolling body is supported on the track beam and can move forwards along the track beam under the pushing of the horizontal hydraulic jack, and the upper rotating body is a rotatable piece arranged at the bottom of the half-section steel box beam.
The utility model discloses stride across the rotatory construction frock of taking one's place of bridge structural feature also lies in: and a temporary support is arranged between the pier and the outer side support on the corresponding side, and the pier, the outer side support and the temporary support jointly form a steel box girder assembling frame for assembling the half-section steel box girder.
Compared with the prior art, the utility model discloses beneficial effect embodies:
the utility model is suitable for an existing current road of simply supported steel case roof beam strideing erects the installation construction, adopts to execute to change the construction method of taking one's place, and it compares with traditional support method and top pushing method, and the work progress is safe high-efficient, has greatly shortened the bridge construction and has strideed across the existing current road to road traffic disturbance time, is applicable to the existing current road of simply supported steel case roof beam strideing under the complicated terrain environment, and very big limit has reduced the bridge construction and has disturbed the road is current.
Drawings
Fig. 1 is a schematic plan view of the present invention;
fig. 2 is a schematic elevation view of the present invention;
FIG. 3 is a schematic view of the structure of the rotary roller of the present invention;
reference numbers in the figures: the road comprises a road 1, a middle span support 2a, an outer side support 2b, a track beam 3, a pier 4, a steel box beam 5, a rotary movable end 5a, a rotary center end 5b, rotary rollers 6, a horizontal hydraulic jack 7, a temporary supporting point 8, a steel box beam assembling frame 9 and a pile foundation 10.
Detailed Description
Referring to fig. 1, 2 and 3, the construction tool for rotary positioning across a bridge in the embodiment includes:
temporary supports, namely, a midspan support 2a is arranged at the midspan position of the road 1, and outer supports 2b are respectively arranged at two sides of the road 1; the temporary support is provided with a track beam 3, the center of the track beam 3 is positioned on the midspan support 2a, and the beam ends of the track beam 3 are positioned on the outer supports 2b at two sides.
The steel box girder assembling frame takes the bridge pier 4 and the beam end of the track girder 3 as supporting points to form a steel box girder assembling frame 9 which is positioned on both sides of the road and is parallel to the road 1 and used for assembling the half-section steel box girder.
The rotary positioning mechanism is characterized in that one end of the half-section steel box girder, which is positioned at the pier 4, is set as a rotary central end 5b, and one end of the half-section steel box girder, which is positioned at the track girder 3, is set as a rotary movable end 5 a; a rotary supporting piece is arranged at the bottom of the rotary central end 5b in the half-section steel box girder; the bottom of the rotary movable end 5a in the half-section steel box girder is provided with a rotary roller 6, the rotary roller 6 is supported on the track girder 3, and a horizontal hydraulic jack 7 for pushing the rotary roller 6 to move forwards along the track girder 3 is arranged on the track girder 3.
In a specific implementation, as shown in fig. 3, the rotating rollers 6 are respectively provided with an upper rotating body 6a and a lower rolling body 6b on a roller seat, the lower rolling body 6b is supported on the track beam 3 and can move forward along the track beam 3 under the pushing of a horizontal hydraulic jack 7, and the upper rotating body 6a is a rotatable part arranged at the bottom of the half-section steel box beam 5; fig. 1 shows that a temporary support 8 is arranged between a pier 4 and an outer support 2b on the corresponding side, and the pier 4, the outer support 2b and the temporary support 8 jointly form a steel box girder assembling frame for assembling a half-section steel box girder; the middle-span support 2a and the outer side support 2b in the temporary support are both formed by assembling and splicing steel pipes and section steel, and the bottom of a steel pipe upright post is arranged on a pile foundation 10; the track beam 3 is an I-shaped section steel member composed of steel plates.
The implementation process comprises the following steps:
firstly, a temporary support is arranged, comprising: a midspan bracket 2a, an outer bracket 2b and a track beam 3; in order to reduce the interference of construction on road traveling, a track beam 3 is installed on the temporary support by adopting a pushing method, and the track beam is pushed from one side of the road 1 by adopting a walking pushing method, and then pushed again after subsequent track beam sections are hoisted until the operation is finished; subsequently, the rotary rollers 6 and the horizontal hydraulic jacks 7 are mounted on the track beam 3.
Then, the steel box girder assembling frames 9 on two sides are constructed, the steel box girder 5 is segmented into two half-section steel box girders which are respectively assembled on the steel box girder assembling frames 9 on one side, so that the rotating center end 5b of the assembled half-section steel box girder is supported on the pier 4, and the rotating movable end 5a is supported on the track girder 3.
Finally, pushing the rotating movable end 5a of each half section of steel box girder from the beam end of the track girder 3 to the center of the track girder 3, and simultaneously rotating the rotating central end 5b of each half section of steel box girder on the pier 4 to adjust the posture of the steel box girder; until the rotary movable ends 5a of the two half-section steel box girders are closed at the midspan position on the track girder 3, simultaneously, the rotary central ends 5b of the two half-section steel box girders are kept on the piers 4, and the geometric posture of the steel box girders 5 is adjusted to ensure that the steel box girders 5 are superposed with the design line position; and welding the span-in closure opening, and then removing the temporary support to complete the in-place construction of the steel box girder 5.
The utility model discloses a top pushes away rotatory construction letter steel case roof beam, and its tooling is competent, and the work progress is safe high-efficient, is applicable to the existing current road of letter steel case roof beam leap under the complicated topography environment, and very big limit has reduced the bridge construction and has disturbed the road is current to the road.
Claims (3)
1. The utility model provides a rotatory construction frock of taking one's place of crossing bridge which characterized by includes:
temporary supports, namely, a midspan support (2a) is arranged at the midspan position of the road (1), and outer supports (2b) are respectively arranged at two sides of the road (1); a track beam (3) is arranged on the temporary support, the beam center of the track beam (3) is positioned on the midspan support (2a), and the beam ends of the track beam (3) are positioned on the outer side supports (2b) on two sides;
the steel box girder assembling frame is a steel box girder assembling frame (9) which is positioned on two sides of a road and is parallel to the road (1) and used for assembling a half-section steel box girder, and is formed by taking a bridge pier (4) and a beam end of a track girder (3) as supporting points;
the rotary positioning mechanism is characterized in that one end of the half-section steel box girder, which is positioned on the pier (4), is set as a rotary central end (5b), and one end of the half-section steel box girder, which is positioned on the track girder (3), is set as a rotary movable end (5 a); a rotary supporting piece is arranged at the bottom of a rotary central end (5b) in the half-section steel box girder; the bottom of rotatory expansion end (5a) sets up rotatory gyro wheel (6) in half section steel case roof beam, rotatory gyro wheel (6) support on track roof beam (3) install horizontal hydraulic jack (7) that are used for promoting rotatory gyro wheel (6) to advance along track roof beam (3) on track roof beam (3).
2. The construction frock of putting across bridge rotation of claim 1, characterized by: rotatory gyro wheel (6) set up upper rotor (6a) and lower part rolling element (6b) respectively on the gyro wheel seat, lower part rolling element (6b) support on track roof beam (3) to can advance along track roof beam (3) under the top of horizontal hydraulic jack (7) top, upper rotor (6a) are the rotatable piece that sets up the bottom at half section steel case roof beam (5).
3. The construction frock of putting across bridge rotation of claim 1, characterized by: temporary supports (8) are arranged between the bridge piers (4) and the outer side supports (2b) on the corresponding side, and the bridge piers (4), the outer side supports (2b) and the temporary supports (8) jointly form a steel box girder assembling frame for assembling the half-section steel box girder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120295938.6U CN214401451U (en) | 2021-02-02 | 2021-02-02 | Rotatory construction frock of taking one's place of bridge strides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120295938.6U CN214401451U (en) | 2021-02-02 | 2021-02-02 | Rotatory construction frock of taking one's place of bridge strides |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214401451U true CN214401451U (en) | 2021-10-15 |
Family
ID=78020554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120295938.6U Active CN214401451U (en) | 2021-02-02 | 2021-02-02 | Rotatory construction frock of taking one's place of bridge strides |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214401451U (en) |
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2021
- 2021-02-02 CN CN202120295938.6U patent/CN214401451U/en active Active
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