CN220246653U - Adjustable slope assembled temporary steel trestle - Google Patents
Adjustable slope assembled temporary steel trestle Download PDFInfo
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- CN220246653U CN220246653U CN202322361605.0U CN202322361605U CN220246653U CN 220246653 U CN220246653 U CN 220246653U CN 202322361605 U CN202322361605 U CN 202322361605U CN 220246653 U CN220246653 U CN 220246653U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 125
- 239000010959 steel Substances 0.000 title claims abstract description 125
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000003466 welding Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses an adjustable gradient assembled temporary steel trestle which comprises a steel support unit, an embedded support unit, a truss unit and a bridge deck unit, wherein the steel support unit comprises a spiral steel pipe, a longitudinal channel steel, a double-spliced I-shaped steel beam built on the spiral steel pipe and a wedge block welded on the double-spliced I-shaped steel beam; the embedded supporting unit comprises a longitudinal embedded channel steel embedded in the concrete bridge abutment and an embedded gradient pedestal embedded in the concrete bridge abutment; the truss unit comprises a bailey frame and a bailey frame slope-changing connecting rod piece, and the bailey frame slope-changing connecting rod piece is connected with the bailey frame between slope-changing nodes to achieve slope changing; the bridge deck unit comprises I-steel, a bridge deck steel plate and connecting and fixing channel steel. The adjustable gradient assembled temporary steel trestle has the advantages of being large in adjustable gradient, small in overall occupied area, stable in overall supporting stress, rapid and simple to install, high in flexibility, high in safety coefficient and the like.
Description
Technical Field
The utility model belongs to the technical field of road and bridge construction, and particularly relates to an adjustable-gradient assembled temporary steel trestle.
Background
With the progress of technology and the development of economy, in recent years, a large number of large-span river-crossing and river-crossing bridges are built up in succession. Along with the continuous breakthrough of the bridge span, the construction difficulty is higher and higher, and when the construction operation of the bridge on the river is carried out, a temporary steel trestle is usually required to be erected in the water so as to facilitate the construction. However, when the steel trestle span is large, the bridge deck is wide, the bridge deck design elevation and the two-bank site height Cheng Xiangcha are large, and the two-bank bridge head site is limited, if the steel trestle is designed and constructed by adopting a conventional method, the length of the erection trestle is long, the cost investment is large, the construction period is long, the occupied site at the bridge head site is also large, the construction deployment is severely restricted, and a good green construction effect cannot be achieved.
Disclosure of Invention
The utility model provides an adjustable-gradient assembled temporary steel trestle, which solves the problems that the traditional trestle has long erection length, large cost investment, long construction period, large occupied area at the bridge head, serious restriction on construction deployment, incapability of achieving good green construction effect and the like.
In order to solve the problems, the utility model adopts the following technical scheme:
the utility model provides an assembled interim steel landing stage of adjustable slope, includes steel supporting element, pre-buried supporting element, truss unit and bridge deck unit, steel supporting element include spiral steel pipe, vertical channel-section steel, build the double-deck I-steel crossbeam on the spiral steel pipe and weld the wedge on the double-deck I-steel crossbeam, spiral steel pipe and vertical channel-section steel welding form whole steel supporting system to through the different elevations at spiral steel pipe top, progressively increase gradually or progressively decrease forms initial slope; the elevation of each supporting point is accurately adjusted through wedge blocks on the double-spliced I-steel beam, the wedge blocks are welded on the double-spliced I-steel beam, the double-spliced I-steel beam is erected on a spiral steel pipe and is tightly overlapped with the truss unit, and the stress is uniform; the wedge-shaped block is used as a gradient adjustable device between the steel support unit and the bailey frame, is processed by steel plates and is welded on the bottom double-spliced I-steel beam.
The embedded support unit comprises longitudinal embedded channel steel embedded in the concrete bridge abutment and an embedded gradient pedestal embedded in the concrete bridge abutment, the gradient on the embedded gradient pedestal is consistent with the designed gradient of the truss of the trestle, the truss unit is completely overlapped on the embedded gradient pedestal, and meanwhile the embedded gradient pedestal plays a limiting role. The whole steel support unit is connected with the bridge abutment into a whole by welding the longitudinal embedded channel steel with the longitudinal channel steel on the steel support unit.
The truss unit comprises a bailey frame and bailey frame slope-changing connecting rods, and the bailey frame slope-changing connecting rods are connected with the bailey frame between slope-changing nodes to achieve slope changing. The variable slope connecting rod piece of the bailey frame is used for hinging the upper ends of the two bailey frames between the slope nodes, and the lower ends of the two bailey frames are mutually hinged. One end of the bailey frame slope-changing connecting rod piece is provided with a single hinge lug which can be inserted into the bailey frame, and the other end of the bailey frame slope-changing connecting rod piece is provided with a hinge lug which can be inserted into the bailey frame for hinge.
The bridge deck unit include I-steel, bridge deck steel sheet and connect fixed channel-section steel, weld I-steel and bridge deck steel sheet in advance and form bridge deck cell, bridge deck cell is formed by I-steel and bridge deck steel sheet welding, adopts the hoist and mount mode to hoist and mount bridge deck cell on the truss unit, forms the assembly type operation, adopts to connect fixed channel-section steel with bridge deck cell welded connection as a whole, forms bridge deck cell system. And the bridge deck unit is limited on the truss unit by welding channel steel on the inner side and the outer side of the upper chord of the truss unit through I-steel.
The slope-adjustable assembled temporary steel trestle has the following advantages.
1. Compared with the traditional steel trestle, the construction method has the advantages of shortening the erection length, reducing the cost investment, shortening the construction period, reducing the occupied space, facilitating the construction and deployment and achieving a good green construction effect.
2. The longitudinal channel steel is adopted to connect the spiral steel pipes through welding, so that all the steel supporting structures are connected to form a whole, and the stability is enhanced.
3. Set up pre-buried slope pedestal on the concrete abutment, can be pre-buried with the pedestal in advance according to the design slope, ensured the zonulae occludens of truss unit and pedestal, the atress is even, and pre-buried slope pedestal plays limiting displacement simultaneously, landing stage stability reinforcing.
4. The wedge-shaped blocks are arranged on the double-spliced I-steel cross beam, the gradient can be adjusted according to the site conditions, the tight connection between the truss unit and the steel support unit is ensured, the stress is uniform, and the stability of the trestle is enhanced.
5. And the bailey frame is arranged to be connected with the rod pieces, and the bailey frame between the nodes of the slope change is connected through the rod pieces, so that the effect of the slope change of the trestle is achieved.
6. The assembled bridge deck units are adopted, the bridge deck small units can be processed in advance, the bridge deck small units which are processed in advance can be quickly hoisted after the bridge deck installation conditions are reached, and then the bridge deck small units are welded and connected into a whole by adopting channel steel, so that the whole bridge deck units are easy to install and detach, and the construction period is saved.
Drawings
FIG. 1 is a schematic diagram of a structure of the adjustable slope fabricated temporary steel trestle;
FIG. 2 is a schematic view of the structure of a wedge block;
FIG. 3 is a schematic view of the structure of the pre-buried support unit;
fig. 4 is a schematic structural view of a bailey frame slope-changing connection rod;
fig. 5 is a schematic diagram of the connection of the bailey frame slope-changing connection rod to the bailey frame;
FIG. 6 is a schematic illustration of a deck of the present pre-buried adjustable slope assembled temporary steel trestle;
the names corresponding to the serial numbers in the figures are:
1. a steel support unit; 12. spiral steel pipes; 13. longitudinal channel steel; 14. double-spliced I-steel cross beams; 15. wedge blocks; 2. embedding a supporting unit; 21. longitudinally embedding channel steel; 22. pre-buried slope pedestal; 3. truss units; 31. the bailey frame is connected with the rod piece in a slope-changing way; 311. the first bailey frame is connected with the rod piece in a slope-changing way; 312. the second bailey frame is connected with the rod piece in a slope-changing way; 32. a bailey frame; 4. a deck unit; 41. bridge deck steel plates; 42. connecting and fixing channel steel; 43. i-steel.
Detailed Description
The utility model will be described in further detail below with reference to the accompanying drawings of the specification and by way of preferred embodiments.
As shown in the figure, the gradient-adjustable assembled temporary steel trestle comprises a steel support unit 1, an embedded support unit 2, a truss unit 3 and a bridge deck unit 4, wherein the steel support unit 1 comprises a spiral steel pipe 12, a longitudinal channel steel 13, a double-spliced I-steel beam 14 built on the spiral steel pipe 12 and a wedge block 15 welded on the double-spliced I-steel beam 14, the spiral steel pipe 12 is welded with the longitudinal channel steel 13 to form an integral steel support system, and the initial gradient is formed by sequentially increasing or decreasing different elevations at the top of the spiral steel pipe 12; the elevation of each supporting point is accurately regulated through wedge blocks 15 on the double-spliced I-steel beam 14, the wedge blocks 15 are welded on the double-spliced I-steel beam 14, and the double-spliced I-steel beam 14 is arranged on the spiral steel pipe 12 and is tightly overlapped with the truss unit 3, so that the stress is uniform; the wedge-shaped block 15 is used as a gradient adjustable device between the steel support unit 1 and the bailey frame 3, and is welded on the bottom double-spliced I-shaped steel beam 14 by adopting steel plate processing.
The embedded support unit 2 comprises a longitudinal embedded channel steel 21 embedded in the concrete bridge abutment and an embedded gradient pedestal 22 embedded in the concrete bridge abutment, the gradient on the embedded gradient pedestal 22 is consistent with the designed gradient of the trestle truss, the truss unit 3 is completely overlapped on the embedded gradient pedestal 22, and meanwhile the embedded gradient pedestal 22 plays a limiting role. The whole steel support unit 1 is connected with the bridge abutment into a whole by welding the longitudinal embedded channel steel 21 with the longitudinal channel steel 13 on the steel support unit 1.
The truss unit 3 comprises a bailey frame 32 and a bailey frame slope-changing connecting rod 31, and the bailey frame 32 between slope-changing nodes is connected through the bailey frame slope-changing connecting rod 31 to achieve slope changing. The bailey frame slope-changing connecting rod 31 can be provided with two sizes, namely a first bailey frame slope-changing connecting rod 311 and a second bailey frame slope-changing connecting rod 312; the length of the second bailey frame slope-changing connecting rod piece 312 is 244mm, and the short joint can be turned by 10 degrees; the length dimension of the first bailey frame slope-changing connecting rod piece 311 is 276mm, and the short joint can be changed into 20 percent of slope.
Bridge deck unit 4 include I-steel 43, bridge deck steel sheet 41 and connect fixed channel-section steel 42, weld I-steel 43 and bridge deck steel sheet 41 in advance and form bridge deck cell, bridge deck cell is formed by I-steel 43 and bridge deck steel sheet 41 welding, adopts the hoist and mount mode to hoist and mount bridge deck cell on truss unit 3, forms the assembly type operation, adopts to connect fixed channel-section steel 43 with bridge deck cell welded connection as a whole, forms bridge deck cell system. The bridge deck unit is limited on the truss unit by welding channel steel on the inner side and the outer side of the upper chord of the truss unit 3 through the I-steel 43.
The above description is not intended to limit the present application to the particular embodiments disclosed, but is not intended to limit the scope of the present application to such modifications, adaptations, additions or substitutions as would be within the spirit and scope of the present application.
Claims (3)
1. The utility model provides an assembled interim steel landing stage of adjustable slope, includes steel supporting element (1), pre-buried supporting element (2), truss unit (3) and bridge floor unit (4), its characterized in that: the steel support unit (1) comprises a spiral steel pipe (12), a longitudinal channel steel (13), a double-spliced I-steel beam (14) built on the spiral steel pipe (12) and a wedge block (15) welded on the double-spliced I-steel beam (14); the embedded supporting unit (2) comprises a longitudinal embedded channel steel (21) embedded in the concrete bridge abutment and an embedded gradient pedestal (22) embedded in the concrete bridge abutment; the truss unit (3) comprises a bailey frame (32) and a bailey frame slope-changing connecting rod piece (31), and the bailey frame (32) between slope-changing nodes is connected through the bailey frame slope-changing connecting rod piece (31); the bridge deck unit (4) comprises I-steel (43), a bridge deck steel plate (41) and connecting and fixing channel steel (42).
2. The adjustable slope assembled temporary steel trestle according to claim 1, characterized in that: the longitudinal embedded channel steel (21) is connected with the longitudinal channel steel (13), and the longitudinal channel steel (13) is connected with the spiral steel pipe (12) in a welding mode.
3. The adjustable slope assembled temporary steel trestle according to claim 1, characterized in that: the embedded gradient pedestal (22) is connected with the truss unit (3), and the embedded gradient pedestal (22) is formed by processing steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322361605.0U CN220246653U (en) | 2023-08-31 | 2023-08-31 | Adjustable slope assembled temporary steel trestle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322361605.0U CN220246653U (en) | 2023-08-31 | 2023-08-31 | Adjustable slope assembled temporary steel trestle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220246653U true CN220246653U (en) | 2023-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322361605.0U Active CN220246653U (en) | 2023-08-31 | 2023-08-31 | Adjustable slope assembled temporary steel trestle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220246653U (en) |
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2023
- 2023-08-31 CN CN202322361605.0U patent/CN220246653U/en active Active
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