CN209907228U - Steel beam pushing and guiding device - Google Patents
Steel beam pushing and guiding device Download PDFInfo
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- CN209907228U CN209907228U CN201920603026.3U CN201920603026U CN209907228U CN 209907228 U CN209907228 U CN 209907228U CN 201920603026 U CN201920603026 U CN 201920603026U CN 209907228 U CN209907228 U CN 209907228U
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- nose
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 104
- 239000010959 steel Substances 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
The utility model provides a girder steel top pushes away guider, including the nose girder, the nose girder includes steel sheet roof beam and pipe truss, the front end downward sloping setting of the top side of steel sheet roof beam, the fixed bridge of the nose that is equipped with of steel sheet roof beam front end, steel sheet roof beam front end in the bridge of the nose below is equipped with bridge of the nose opening, 2 set up side by side about the steel sheet roof beam, 2 it is fixed to be equipped with between the steel sheet roof beam the pipe truss, the nose girder tail end is equipped with the mounting hole, can solve under the girder steel top pushes away in-process girder steel front end cantilever warp big, can not arrive the technical problem on the next mound top slide smoothly.
Description
Technical Field
The utility model relates to a bridge construction equipment technical field especially relates to a girder steel top pushes away guider.
Background
The side span steel beam is continuously converted in the pushing construction process, and each section bears positive and negative bending moments which alternately appear in the pushing advancing process. In order to reduce the internal force of the steel beam in the pushing process and increase the pushing span, a temporary structure auxiliary construction device, namely a guide beam, is usually arranged at the front end of the steel beam.
The length, the rigidity and the weight of the guide beam greatly influence the internal force of the main beam in the pushing process, the longer guide beam can reduce the cantilever negative moment of the main beam, but the overlong guide beam can also correspondingly increase the negative moment and the support reaction force at the joint of the guide beam and the box beam, and the reasonable length of the guide beam can ensure that the maximum cantilever negative moment of the main beam is basically close to the fulcrum negative moment in a use state.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the utility model provides a girder steel top pushes away guider can solve and push away the in-process girder steel front end cantilever downwarping greatly at the girder steel, can not make the girder steel reach the technical problem on the next mound top slide smoothly.
In order to solve the technical problem, the technical scheme of the utility model is that: the steel beam pushing and guiding device comprises a guide beam, wherein the guide beam comprises a steel plate beam and a circular tube truss, the front end of the top side face of the steel plate beam is arranged in a downward inclining mode, the front end of the steel plate beam is fixedly provided with a nose bridge, the front end of the steel plate beam is provided with a nose bridge opening below the nose bridge, 2 steel plate beams are arranged side by side left and right, the circular tube truss is fixedly arranged between the 2 steel plate beams, and the tail end of the guide beam is provided with a plurality of mounting holes used for being connected with a steel beam reserved joint.
As an improved mode, the steel plate girder is divided into two sections along the longitudinal direction, and the two sections of the steel plate girder are connected through splicing plate high-strength bolts.
As an improved mode, the height of the root of the steel plate beam is the same as that of the reserved joint of the steel beam, the height of the root of the steel plate beam is 2.92m, the height of the front end of the steel plate beam is 1.2m, and the length of the steel plate beam is 22 m.
As a refinement, the nose bridge opening has a height of 50cm and a width of 50 cm.
As an improved mode, the lifting device further comprises a jack and a sliding plate, the jack is supported in the nose bridge opening below the nose bridge, and the sliding plate is fixedly arranged at the bottom of the jack.
As an improved mode, the round tube truss comprises transverse tubes, longitudinal tubes and inclined stay tubes, the transverse tubes are arranged between the steel plate beams in parallel, the longitudinal tubes are transversely arranged between the two adjacent transverse tubes, and the inclined stay tubes are obliquely arranged between the two adjacent longitudinal tubes.
As an improved mode, the steel plate beam is a variable-section I-shaped steel plate with the rear width larger than the front width.
The technical effect obtained by adopting the technical scheme is as follows:
the steel beam pushing guide device can reduce the internal force of the steel beam in the pushing process, increase the pushing span, has better stress performance, large rigidity and simple processing and assembly, can play a role in guiding the steel beam in the pushing process, and can solve the technical problem that the cantilever at the front end of the steel beam is greatly downwarped and cannot smoothly reach the slide way of the next pier top in the steel beam pushing process.
Because the steel plate girder is divided into two sections along the longitudinal direction, the two sections of the steel plate girder are connected by the splicing plate high-strength bolt, and the guide girder is divided into two sections along the longitudinal direction, so that the transportation, the installation and the disassembly are convenient.
Owing to still include jack and slide, the jack support in the bridge of the nose below in the bridge of the nose opening, the slide is fixed to be located the jack bottom installs the slide on the slide, lays the jack on the slide, adjusts the nose girder with the jack to the design height, then the jack together with the bridge of the nose moves ahead on the slide, draws the slide with the nose girder, treats to place the slider behind the nose girder lies in the slide top, removes the jack, realizes pier on the nose girder. Because the tail end of the guide beam is installed on the steel beam reserved joint through the installation hole, the cantilever state of the steel beam can be finished after the guide beam is erected, and the guide beam slides forwards to guide the steel beam to be erected.
Because the steel plate beam is a variable cross-section I-shaped steel plate with the rear width larger than the front width, the structure has the characteristics of better stress performance, high rigidity and simple processing.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic side view of a steel plate girder according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a guide beam according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a schematic structural view of the guide beam before being subjected to pier construction;
FIG. 5 is a schematic structural view of the guide beam after being subjected to pier construction;
in the figure, 1-steel plate beam, 11-nose bridge, 12-nose bridge opening, 21-horizontal tube, 22-longitudinal tube, 23-diagonal tube, 3-jack and 4-skateboard.
Detailed Description
As shown in fig. 1-3, a steel beam pushing guide device comprises a guide beam, wherein the guide beam comprises a steel plate beam 1 and a circular tube truss, the front end of the top side surface of the steel plate beam 1 is arranged in a downward inclining manner, the weight of the front part of the steel plate beam 1 is lighter than that of the rear part, the front end of the steel plate beam 1 can be prevented from being greatly warped downwards, the steel plate beam 1 is a variable cross-section i-shaped steel plate, the width of the rear part of the variable cross-section i-shaped steel plate is larger than that of the front part of the variable cross-section i-. In the embodiment, the height of the root of the steel plate beam 1 is 2.92m, the height of the front end of the steel plate beam 1 is 1.2m, and the length of the steel plate beam 1 is 22 m.
The steel plate beam 1 is longitudinally divided into two sections, the two sections of the steel plate beam 1 are connected by splicing plate high-strength bolts, and the guide beam is longitudinally divided into two sections so as to be convenient to transport, install and detach. The nose bridge 11 is fixedly arranged at the front end of the steel plate beam 1, a nose bridge opening 12 is arranged below the nose bridge 11 at the front end of the steel plate beam 1, and the height and the width of the nose bridge opening 12 are 50cm and 50cm respectively. 2 steel sheet roof beam 1 controls and sets up side by side, and 2 steel sheet roof beam 1 is fixed between being equipped with the pipe truss, and the pipe truss is including violently managing 21, vertical pipe 22 and bracing tube 23, and a plurality of violently pipes 21 are located between 2 steel sheet roof beams 1 side by side, and vertical pipe 22 transversely sets up between adjacent two violently pipes 21, and bracing tube 23 inclines to locate between adjacent two vertical pipes 22. The tail end of the guide beam is provided with a mounting hole. The tail end of the guide beam is arranged on the reserved joint of the steel beam through the mounting hole.
The steel beam pushing and guiding device further comprises a jack 3 and a sliding plate 4, the jack 3 is supported in a nose bridge opening 12 below a nose bridge 11, the sliding plate 4 is fixedly arranged at the bottom of the jack 3, the sliding plate 4 is installed on the slide way, the jack 3 is arranged on the sliding plate 4, the guide beam is adjusted to the designed height through the jack 3, then the jack 3 and the nose bridge 11 move forwards on the slide way together, and the guide beam is guided to the slide way. And (5) placing a sliding block after the guide beam is positioned above the slideway, and removing the jack 3 to realize pier mounting on the guide beam. The cantilever state of the steel beam can be finished after the guide beam is erected, and the guide beam slides forwards to guide the whole steel beam to be erected.
The application of girder steel top pushes away guider's theory of operation does:
as shown in fig. 4 and 5, in the process of pushing the steel beam, the cantilever at the front end of the guide beam is bent downwards, so that the guide beam cannot smoothly reach the slideway of the next temporary pier top, and the vertical jack 3 and the temporary support pad are arranged on the temporary pier top to adjust the front end deflection of the guide beam. In order to adapt to the characteristic that the front end of the guide beam is greatly bent downwards in the state of pushing the cantilever, the front end of the guide beam is provided with a first-stage step nose bridge 11. Q345 steel is selected as the material of the guide beam.
The root of the guide beam is connected to a reserved joint of the steel main beam, the horizontal distance is 25.2m, and the two steel plate beams 1 are connected in a transverse connection mode through a circular tube truss structure. The height of the root part of the steel plate girder 1 is the same as that of the reserved joint of the steel girder. And splicing plate high-strength bolts are adopted for connecting the guide beam sections and the sections and between the tail end of the guide beam and the end head of the steel beam.
In order to cooperate with a vertical jack 3 to work together, a sliding plate 4 is installed on the sliding plate 4, the jack 3 is placed on the sliding plate 4, the guide beam is adjusted to the designed height through the jack 3, the jack 3 exerts a vertically upward jacking force on the guide beam, the elevation of the bottom surface of the guide beam is higher than that of the top surface of the sliding rail, at the moment, a jacking system is started, manual operation is conducted, the jack 3 and a nose bridge 11 move forwards on the sliding rail together, the guide beam is guided to the sliding rail, a sliding block is placed after the guide beam is located above the sliding rail, the jack 3 is removed, and pier mounting on the guide beam is achieved.
Claims (7)
1. The steel beam pushing and guiding device is characterized by comprising a guide beam, wherein the guide beam comprises a steel plate beam and a circular tube truss, the front end of the top side face of the steel plate beam is arranged in a downward inclining mode, the front end of the steel plate beam is fixedly provided with a nose bridge, the front end of the steel plate beam is provided with a nose bridge opening below the nose bridge, 2 steel plate beams are arranged side by side left and right, the circular tube truss is fixedly arranged between the 2 steel plate beams, and the tail end of the guide beam is provided with a plurality of mounting holes used for being connected with a steel beam reserved joint.
2. The steel beam incremental launching guide of claim 1, wherein the steel plate beam is divided into two sections in the longitudinal direction, and the two sections of the steel plate beam are connected by high-strength bolts of the splice plate.
3. The steel beam pushing guide device as claimed in claim 2, wherein the height of the root of the steel plate beam is the same as the height of the reserved joint of the steel beam, the height of the front end of the steel plate beam is 1.2m, and the length of the steel plate beam is 22 m.
4. The steel beam jacking guide of claim 3 wherein said nose bridge opening is 50cm in height and 50cm in width.
5. The steel beam jacking guide of claim 1 further including a jack supported in said nose bridge opening below said nose bridge and a skid plate fixedly mounted to the bottom of said jack.
6. The steel beam incremental launching guide device as claimed in claim 1, wherein the round pipe truss comprises a plurality of horizontal pipes, a plurality of longitudinal pipes and an inclined supporting pipe, wherein the plurality of horizontal pipes are arranged between 2 steel plate beams side by side, the longitudinal pipes are transversely arranged between two adjacent horizontal pipes, and the inclined supporting pipe is obliquely arranged between two adjacent longitudinal pipes.
7. The steel beam jacking guide of claim 1 wherein said steel plate beam is a variable cross-section i-shaped steel plate having a rear width greater than a front width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920603026.3U CN209907228U (en) | 2019-04-29 | 2019-04-29 | Steel beam pushing and guiding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920603026.3U CN209907228U (en) | 2019-04-29 | 2019-04-29 | Steel beam pushing and guiding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209907228U true CN209907228U (en) | 2020-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920603026.3U Expired - Fee Related CN209907228U (en) | 2019-04-29 | 2019-04-29 | Steel beam pushing and guiding device |
Country Status (1)
| Country | Link |
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| CN (1) | CN209907228U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111206513A (en) * | 2020-01-13 | 2020-05-29 | 成都高源工程勘察设计有限公司 | Bridge translation construction structure and device and construction method for crossing existing line bridge |
| CN113430936A (en) * | 2021-06-08 | 2021-09-24 | 江苏省交通工程集团有限公司 | Pushing steel truss guide beam racking auxiliary device and method |
| CN113832827A (en) * | 2021-09-22 | 2021-12-24 | 中交路桥华南工程有限公司 | Guide beam for steel box girder pushing construction |
| CN114250716A (en) * | 2021-12-24 | 2022-03-29 | 中国电建集团贵阳勘测设计研究院有限公司 | Long cantilever upper pier structure for medium-long span steel beam incremental launching construction and method thereof |
-
2019
- 2019-04-29 CN CN201920603026.3U patent/CN209907228U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111206513A (en) * | 2020-01-13 | 2020-05-29 | 成都高源工程勘察设计有限公司 | Bridge translation construction structure and device and construction method for crossing existing line bridge |
| CN111206513B (en) * | 2020-01-13 | 2021-08-17 | 成都高源工程勘察设计有限公司 | Bridge translation construction structure and device and construction method for crossing existing line bridge |
| CN113430936A (en) * | 2021-06-08 | 2021-09-24 | 江苏省交通工程集团有限公司 | Pushing steel truss guide beam racking auxiliary device and method |
| CN113832827A (en) * | 2021-09-22 | 2021-12-24 | 中交路桥华南工程有限公司 | Guide beam for steel box girder pushing construction |
| CN114250716A (en) * | 2021-12-24 | 2022-03-29 | 中国电建集团贵阳勘测设计研究院有限公司 | Long cantilever upper pier structure for medium-long span steel beam incremental launching construction and method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20200107 |