CN215629277U - Temporary supporting structure for steel box girder - Google Patents
Temporary supporting structure for steel box girder Download PDFInfo
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- CN215629277U CN215629277U CN202121611684.0U CN202121611684U CN215629277U CN 215629277 U CN215629277 U CN 215629277U CN 202121611684 U CN202121611684 U CN 202121611684U CN 215629277 U CN215629277 U CN 215629277U
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- box girder
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Abstract
The utility model provides a steel box girder temporary support structure, includes the interim mound of top pushing, assembles support and operation platform, still includes the top pushing action system, including walking top pushing equipment and temporary support, temporary support includes bearing pillar and spacing post, and the bearing pillar includes bottom plate, center pillar and roof, and the center pillar is the steel core concrete column, and the top elevation of roof is lower than the bottom elevation of this position steel box girder bridge, and the difference of two levels is the space that returns of walking top pushing equipment, the bottom fixed connection of spacing post is on the outside limit portion of roof, and the net interval of two spacing posts that set up on every top pushing temporary mound is greater than the cross bridge of this position of steel box girder bridge is wide to the bridge. The temporary support and the walking type pushing equipment are matched for use, and the transverse line deviation in the pushing process of the steel box girder is effectively controlled. The temporary support adopts an all-steel structure, is firm and reliable in stress, can bear full-bridge load in non-incremental launching operation, and can measure the offset in real time. The temporary support is convenient to construct and install and can be used in a turnover mode.
Description
Technical Field
The utility model belongs to the field of temporary support of beam bodies, and particularly relates to a temporary support structure of a steel box beam.
Background
In recent years, with the acceleration of infrastructure construction progress, the construction of overpasses and highways leads to the development of complex and diversified urban traffic. Especially, when the radius of a flat curve of the bridge design is smaller, namely the road steering angle is more curved, compared with a linear bridge, the construction is usually carried out by adopting a hoisting method. When the ramp or the main bridge crosses the existing road structure, the existing road needs to keep normal traffic, and the sling cart in the traditional hoisting construction cannot stay on the existing road, so that adverse effects are generated on traffic. Meanwhile, the clearance between the ramp or the main bridge and the existing road is limited, the hoisting space is limited, and the requirement cannot be met by adopting the traditional hoisting process. At the moment, the steel box girder pushing construction in the range can be carried out by adopting a pushing method.
In the pushing construction, when the radius of a flat curve of a bridge design is smaller, the steel box girder is complex to twist when the pushing construction is carried out on the bridge at a small radius of curvature, the control of the pushing process is more difficult to control compared with the traditional straight-line pushing and large-curve pushing due to the fact that the angular velocity is the same and the linear velocity is different in the pushing process, and the factors influencing the bridge pushing and the offset are more, so that the walking type pushing is feasible compared with other pushing modes. In the existing walking type pushing construction, the existing bottom support generally adopts a full framing scaffold, on one hand, the full framing scaffold cannot ensure the passing of the existing road, on the other hand, the pushing equipment easily causes the steel box girder to slide from the bottom support in the returning process, and particularly, when the radius of a designed flat curve of the bridge is small, the steel box girder is easily deviated from the designed position in the pushing process. Therefore, a temporary supporting structure for the pushing equipment in the return process is urgently needed, the full-bridge load can be reliably borne by stress, the use is convenient, and the transverse line deviation in the pushing process of the steel box girder can be effectively controlled.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a temporary support structure for a steel box girder, and aims to solve the technical problems that the existing temporary support structure for walking type pushing construction cannot ensure the passing of the existing highway, and the steel box girder is easy to slide and deviate from the designed position in the process of returning pushing equipment.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a steel box girder temporary support structure erects along steel box girder bridge along the bridge direction, its characterized in that: the device comprises temporary incremental launching piers, an assembling support and an operating platform, wherein the temporary incremental launching piers are arranged on the ground between the piers in a group at intervals along the bridge direction, each transverse bridge direction of the temporary incremental launching piers is arranged, the assembling support is arranged on the ground of the rest part of the steel box girder bridge and other existing road superposition positions and between two adjacent temporary incremental launching piers, the operating platform is laid on the upper sides of the temporary incremental launching piers and the operating platform in a flatwise manner, the transverse width of the temporary incremental launching piers and the assembling support is matched with the transverse width of the steel box girder bridge,
the temporary support structure for the steel box girder further comprises pushing action systems which are arranged in groups, each group of pushing action systems comprises two groups of pushing action systems which are relatively and fixedly connected with two end parts of the same temporary pushing pier along the transverse bridge direction, each group of pushing action systems comprises a walking type pushing device and two temporary supports, the walking type pushing device is positioned between the two temporary supports,
the utility model discloses a steel box girder bridge, including bearing pillar and spacing post, the bearing pillar includes bottom plate, center pillar and roof, bottom plate and roof are just from top to bottom and fixed connection at the bottom and the top of center pillar between two parties, the center pillar is the steel core concrete column, the top elevation of roof is lower than the bottom elevation of this position steel box girder bridge, and the difference of two elevations is the space that rolls back of walking top pushing equipment, the bottom fixed connection of spacing post is on the outside limit portion of roof, and the clear interval of two spacing posts that set up on every top pushing temporary pier is greater than the transverse bridge of this position of steel box girder bridge to the bridge width.
The bottom plate and the top plate are round steel plates with the same size.
The center pillar is a circular steel tube concrete column arranged between the bottom plate and the top plate in the middle.
And a bottom plate stiffening plate arranged at intervals is fixedly connected between the upper side of the bottom plate and the outer wall of the center pillar.
And a roof stiffening plate arranged at intervals is fixedly connected between the lower side of the roof and the outer wall of the center pillar.
Spacing post is including founding the post body on the roof, the post body is the I-steel, including flange board and web, the flange board is parallel with the lateral wall of this steel box girder bridge, the flange board includes inboard flange board and outside flange board.
Spacing post is put more energy the subassembly still including spacing post, spacing post is put more energy the subassembly and is included back of the body bracing down tube, back of the body bracing down tube is opening channel-section steel inwards, the top fixed connection of back of the body bracing down tube is on the outside flange board, and bottom fixed connection is at the upside of roof.
The limiting column stiffening assembly further comprises a back top stiffening plate, the back top stiffening plate is parallel to the web plate and located on two sides of the back top support diagonal rod, and the back top stiffening plate is fixedly connected between the outer side surface of the outer side flange plate and the upper side surface of the top plate.
The limiting column stiffening assembly further comprises web stiffening plates, the web stiffening plates are located on two sides of the web and are opposite to the arrangement positions of the two sides, the web stiffening plates are parallel to the flange plates and located between the inner side flange plates and the outer side flange plates, and the web stiffening plates are fixedly connected between the outer side surfaces of the web and the upper side surfaces of the top plates.
Compared with the prior art, the utility model has the following characteristics and beneficial effects:
the utility model designs a set of temporary supporting structure of the steel box girder suitable for pushing construction, designs a novel temporary support in a pushing action system to be matched with walking type pushing equipment for use, and can effectively control the condition of transverse line deviation in the pushing process of the steel box girder. The novel temporary support adopts an all-steel structure, is firm and reliable in stress, can bear full-bridge load in non-incremental launching operation, and can measure the offset in real time. The novel temporary support is convenient to construct and install and can be used in a circulating mode.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic view of the overall arrangement of the present invention.
Fig. 2 is a schematic side view of the projection structure of fig. 1.
Fig. 3 is a schematic structural view of the temporary stand.
Fig. 4 is a schematic bottom view of the top plate.
Fig. 5 is a schematic top view of the base plate.
Fig. 6 is a schematic top view of the temporary stand.
Fig. 7 is a schematic view of the relative installation position of the temporary support in the transverse bridge direction.
Reference numerals: the method comprises the following steps of 1-steel box girder bridge, 2-pushing temporary piers, 3-splicing support, 4-operation platform, 5-walking pushing equipment, 6-temporary support, 7-bearing support, 71-bottom plate, 72-center column, 73-top plate, 74-bottom plate stiffening plate, 75-top plate stiffening plate, 8-limiting column, 81-inner side flange plate, 82-outer side flange plate, 83-web plate, 84-back top supporting diagonal rod, 85-back top stiffening plate, 86-web plate stiffening plate, 9-existing road and 10-pier.
Detailed Description
Referring to fig. 1-2, the embodiment of the utility model relates to a temporary supporting structure for a steel box girder, which is erected along a steel box girder bridge 1 along a bridge direction and comprises temporary pushing piers 2, an assembling support 3 and an operating platform 4, wherein the temporary pushing piers 2 are arranged on the ground between piers 10 at intervals along the bridge direction, each temporary pushing pier 2 is arranged along the bridge direction, the assembling support 3 is arranged on the ground of the rest part of the steel box girder bridge 1 and other existing road superposition positions and between two adjacent temporary pushing piers 2, the operating platform 4 is tiled at the upper sides of the temporary pushing piers 2 and the operating platform 4, and the transverse width of the temporary pushing piers 2 and the assembling support 3 is adapted to the transverse width of the steel box girder bridge 1. The pushing temporary pier 2 is a double-side pushing temporary pier.
The temporary steel box girder supporting structure further comprises pushing action systems which are arranged in groups, each group of pushing action systems comprises two groups of pushing action systems which are relatively and fixedly connected to two end portions of the same pushing temporary pier 2 in the transverse bridge direction, each group of pushing action systems comprises a walking type pushing device 5 and two temporary supports 6, and the walking type pushing device 5 is located between the two temporary supports 6.
In this embodiment, the pushing temporary piers at two sides of the crossing position with the existing road 9 are single-side pushing temporary piers, which are respectively arranged at two sides of the existing road 9, and each single-side pushing temporary pier is provided with a set of pushing action system.
Embodiment referring to fig. 4-7, the temporary support 6 is made of all steel and comprises a supporting pillar 7 and a limiting pillar 8, the supporting pillar 7 comprises a bottom plate 71, a middle pillar 72 and a top plate 73, the bottom plate 71 and the top plate 73 are opposite up and down and are fixedly connected to the bottom and the top of the middle pillar 72 in the center, and the middle pillar 72 is a steel pipe concrete pillar and bears the load of a steel box girder together.
In this embodiment, the bottom plate 71 and the top plate 73 are circular steel plates having the same size. The center post 72 is a circular column of steel tube concrete centrally disposed between the bottom plate 71 and the top plate 73.
A circle of bottom plate stiffening plates 74 arranged at intervals are fixedly connected between the upper side of the bottom plate 71 and the outer wall of the center pillar 72. Eight total floor stiffener plates 74 are shown disposed around one circumference.
Roof stiffening plates 75 arranged at intervals are fixedly connected between the lower side of the roof 73 and the outer wall of the center pillar 72. Eight of the illustrated roof stiffener plates 75 are provided around the circumference. The bottom plate stiffener plates 74 correspond up and down to the top plate stiffener plates 75.
The top elevation of roof 73 is lower than the bottom elevation of this position steel box girder bridge 1, and the difference of two elevation is the space that backs down of walking top pushing equipment 5, the bottom fixed connection of spacing post 8 is in the outside limit portion of roof 73, and the clear interval of two spacing posts 8 that set up on every top pushes away interim mound 2 is greater than the horizontal bridge of this position of steel box girder bridge 1 to the bridge width. The top surface elevation of the rechecking support is required to be measured during installation, the designed elevation of the top surface of each support is 50mm lower than the height of the bridging line at the position, and the height of the top surface of each support is required to be determined during installation. In the utility model, all the fixed connections on the temporary support are welded connections.
The construction process of the utility model is as follows: constructing a pier, then erecting a pushing temporary pier at a design position, and installing a pushing action system to complete the joint adjustment of the walking type pushing equipment; then erecting an assembling support, laying an operating platform on the assembling support, welding a guide beam and a section of steel box girder on the assembling support, and pushing the steel box girder forward in a curve manner through a pushing action system, wherein in the pushing process, the bottom of the steel box girder is firstly pushed forward through walking type pushing equipment and then retreated, at the moment, the steel box girder is placed on a temporary support, and then the walking type pushing equipment is pushed forward again. The pushing times of the inner side walking type pushing equipment and the outer side walking type pushing equipment are different, the outer side times are larger than the inner side times, and in the pushing process, the box girder and the guide beam web plate are always on the longitudinal central line of the pushing equipment until the whole steel box girder is constructed.
Claims (9)
1. The utility model provides a steel box girder temporary support structure erects along steel box girder bridge (1) in the same direction as the bridge, its characterized in that: comprises temporary incremental launching piers (2), an assembling support (3) and an operating platform (4), wherein the temporary incremental launching piers (2) are arranged on the ground between piers (10) along the bridge direction at intervals in a group, each temporary incremental launching pier (2) is arranged in the transverse bridge direction, the assembling support (3) is arranged on the ground of the rest part of the steel box girder bridge (1) and other existing road superposition positions and between the temporary incremental launching piers (2) in two adjacent road superposition positions, the operating platform (4) is tiled at the upper sides of the temporary incremental launching piers (2) and the operating platform (4), the transverse width of the temporary incremental launching piers (2) and the assembling support (3) is adapted to the transverse width of the steel box girder bridge (1),
the temporary support structure for the steel box girder further comprises pushing action systems which are arranged in groups, each group of pushing action systems comprises two groups of pushing action systems which are relatively and fixedly connected with two end portions of the same pushing temporary pier (2) along the transverse bridge direction, each group of pushing action systems comprises a walking type pushing device (5) and two temporary supports (6), the walking type pushing device (5) is positioned between the two temporary supports (6),
the utility model discloses a walking pushing device, including bearing pillar (7) and spacing post (8), bearing pillar (7) are made by all steel, including bottom plate (71), center pillar (72) and roof (73), bottom plate (71) and roof (73) are just about and fixed connection at the bottom and the top of center pillar (72) between two parties, center pillar (72) are steel core concrete column, the bottom elevation of roof (73) is lower than this position steel box girder bridge (1) than the top elevation, and the difference of two elevations is the space that backs of walking pushing device (5), the bottom fixed connection of spacing post (8) is in the outside limit portion of roof (73), and the net distance of two spacing posts (8) that set up on every pushing temporary pier (2) is greater than the horizontal bridge width of this position of steel box girder bridge (1) to the bridge.
2. The temporary support structure for steel box girders according to claim 1, characterized in that: the bottom plate (71) and the top plate (73) are round steel plates with the same size.
3. The temporary support structure for steel box girders according to claim 1, characterized in that: the center pillar (72) is a circular concrete filled steel tube pillar centrally arranged between the bottom plate (71) and the top plate (73).
4. The temporary support structure for steel box girders according to claim 2 or 3, characterized in that: and a bottom plate stiffening plate (74) arranged at intervals is fixedly connected between the upper side of the bottom plate (71) and the outer wall of the center pillar (72).
5. The temporary support structure for steel box girders according to claim 2 or 3, characterized in that: roof stiffening plates (75) arranged at intervals are fixedly connected between the lower side of the roof (73) and the outer wall of the center pillar (72).
6. The temporary support structure for steel box girders according to claim 1, characterized in that: spacing post (8) are including founding the post body on the roof, the post body is the I-steel, including flange board and web (83), the flange board is parallel with the lateral wall of this department steel box girder bridge (1), the flange board includes inboard flange board (81) and outside flange board (82).
7. The temporary support structure for steel box girders according to claim 6, characterized in that: spacing post (8) still include spacing post subassembly of putting more energy into, spacing post subassembly of putting more energy into includes back of the body bracing down tube (84), back of the body bracing down tube (84) are opening channel-section steel inwards, the top fixed connection of back of the body bracing down tube (84) is on outside flange board (82), and bottom fixed connection is at the upside of roof (73).
8. The temporary support structure for steel box girders according to claim 7, characterized in that: the limiting column stiffening assembly further comprises a back top stiffening plate (85), the back top stiffening plate (85) is parallel to the web plate (83) and located on two sides of the back top supporting inclined rod (84), and the back top stiffening plate (85) is fixedly connected between the outer side surface of the outer side flange plate (82) and the upper side surface of the top plate (73).
9. The temporary support structure for steel box girders according to claim 8, characterized in that: the limiting column stiffening assembly further comprises web stiffening plates (86), the web stiffening plates (86) are located on two sides of the web (83) and are opposite to the arrangement positions of the two sides, the web stiffening plates (86) are parallel to the flange plates and located between the inner side flange plates (81) and the outer side flange plates (82), and the web stiffening plates (86) are fixedly connected between the outer side surfaces of the web (83) and the upper side surfaces of the top plates (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121611684.0U CN215629277U (en) | 2021-07-15 | 2021-07-15 | Temporary supporting structure for steel box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121611684.0U CN215629277U (en) | 2021-07-15 | 2021-07-15 | Temporary supporting structure for steel box girder |
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| Publication Number | Publication Date |
|---|---|
| CN215629277U true CN215629277U (en) | 2022-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121611684.0U Active CN215629277U (en) | 2021-07-15 | 2021-07-15 | Temporary supporting structure for steel box girder |
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| Country | Link |
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| CN (1) | CN215629277U (en) |
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2021
- 2021-07-15 CN CN202121611684.0U patent/CN215629277U/en active Active
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