CN220132753U - Sliding positioning system in pushing construction of steel box girder - Google Patents
Sliding positioning system in pushing construction of steel box girder Download PDFInfo
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- CN220132753U CN220132753U CN202321656397.0U CN202321656397U CN220132753U CN 220132753 U CN220132753 U CN 220132753U CN 202321656397 U CN202321656397 U CN 202321656397U CN 220132753 U CN220132753 U CN 220132753U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 80
- 239000010959 steel Substances 0.000 title claims abstract description 80
- 238000010276 construction Methods 0.000 title claims abstract description 47
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 238000005096 rolling process Methods 0.000 claims abstract description 13
- 229910001220 stainless steel Inorganic materials 0.000 claims description 13
- 239000010935 stainless steel Substances 0.000 claims description 13
- 239000004519 grease Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 abstract description 21
- 238000007142 ring opening reaction Methods 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 6
- 238000004873 anchoring Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009499 grossing Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
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Abstract
The utility model discloses a sliding positioning system in pushing construction of a steel box girder, which solves the technical problem of low efficiency in pushing construction of the steel box girder of a bridge in the prior art. The utility model comprises a pair of slide rails, a pair of slide brackets arranged on the slide rails in a sliding way, a 200T continuous jack connected with one slide bracket and used for driving the slide bracket to slide along the length direction of the slide rails, and finish rolling screw thread steel connected between the pair of slide brackets and used for enabling two slide brackets to slide on the slide rails synchronously; the slide support is provided with a pair of supporting and positioning mechanisms for supporting and positioning the steel box girder segments. The welding device is simple in structure, scientific and reasonable in design and convenient to use, is used for quickly transferring the box Liang Kuaiti to the ring opening welding area for positioning, assembling and welding after the box Liang Kuaiti is spliced and welded into a whole section, and can effectively increase the welding operation surface in a limited operation area and improve the construction efficiency.
Description
Technical Field
The utility model belongs to the field of bridge construction, and particularly relates to a sliding positioning system in steel box girder pushing construction.
Background
The pushing construction method refers to a construction method that a beam body is poured or assembled on a road embankment behind an abutment section by section and is longitudinally pushed by a pushing device, so that the beam body is positioned by temporary sliding devices at the tops of piers. The working principle of the pushing construction method can be described by three main links of periodic operation, namely, concrete beam sections are poured or assembled on a fixed site behind an abutment, permanent and temporary prestressed reinforcements are tensioned, and a beam body is pushed in section by means of a pushing device arranged on the abutment of a site close to a beam Duan Yu or at the bottom of a beam on a bracket and a sliding device arranged on each pier support or temporary buttress
The pushing construction does not affect the traffic under the bridge, does not need large-scale hoisting equipment or high-altitude operation, and is particularly suitable for the construction of the ultra-large span bridge, the long-line approach bridge or the three-dimensional intersection of the urban bridge; because the beam section is periodically constructed on a fixed site, the construction quality and the construction progress are easy to ensure.
The bridge pushing construction is in-situ installation, has the characteristics of fixed operation area, relatively low requirements on site conditions and the like, and is widely applied to large-scale bridge construction. In general, the steel box girder pushing construction can meet the construction requirement by adopting the procedures of whole-section hoisting, section assembling, ring opening welding and pushing. However, under the condition that the field condition does not allow the whole section to enter the field or to hoist, the whole section of the steel box girder needs to be decomposed into small blocks and then enter the field, then the small blocks are assembled and welded into the whole section on an assembly platform, and then the assembly welding and the subsequent pushing construction between the sections are carried out, so that the construction efficiency is reduced.
Therefore, designing a sliding positioning system in pushing construction of a steel box girder to improve construction efficiency becomes a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The utility model aims to solve the technical problems that: provides a sliding positioning system in pushing construction of a steel box girder, so as to at least solve the technical problems of the part.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the sliding positioning system in the pushing construction of the steel box girder comprises a pair of slideway girders, a pair of sliding supports arranged on the slideway girders in a sliding manner, a 200T continuous jack connected with one sliding support and used for driving the sliding support to slide along the length direction of the slideway girders, and finish rolling screw steel connected between the pair of sliding supports and used for enabling the two sliding supports to slide on the slideway girders synchronously; the slide support is provided with a pair of supporting and positioning mechanisms for supporting and positioning the steel box girder segments.
Further, the supporting and positioning mechanism comprises a three-way jack arranged on the sliding support and a pad beam B arranged on the three-way jack.
Further, two three-way jacks on the same slide support are symmetrically distributed on two sides of the top surface of the slide support.
Further, two pairs of slide support transverse limiting plates matched with the slide rails Liang Xiangshi are arranged on the slide support, and each slide rail beam is matched with one pair of slide support transverse limiting plates.
Further, the slideway beam is fixedly arranged on a sliding foundation in the construction site, an embedded part is embedded in the sliding foundation, and the slideway beam is fixedly welded with the embedded part.
Further, the top surface of the slideway beam is provided with a smooth mechanism for reducing sliding friction resistance.
Further, the smooth mechanism comprises a stainless steel plate with the thickness of 4mm arranged on the top surface of the slideway beam, and a grease layer smeared on the stainless steel plate with the thickness of 4 mm.
Further, the device also comprises a pair of electric windlass which are respectively connected with the other slide support, and the pair of electric windlass is respectively arranged on the two slide rail beams.
Further, the finish rolled deformed steel bars have a pair of deformed steel bars which are arranged in parallel on the same horizontal plane and are respectively located right above the pair of slide beams.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model has simple structure, scientific and reasonable design and convenient use, is used for assembling and welding the steel box girder blocks to form single sections, and then slides the welded sections to the right side through the sliding system to carry out ring opening welding and pushing, thereby realizing synchronous line production of box girder block assembly welding and whole section ring opening welding, enlarging welding operation surface in a limited operation area and greatly improving construction efficiency.
The utility model can realize the demoulding, longitudinal sliding and fine adjustment of the segment of the steel box girder which is welded, the precision of the steel box girder can be up to 1000mm longitudinally, the vertical direction can be up to 200mm, and the transverse direction can be up to +/-75 mm.
Drawings
FIG. 1 is a floor plan of the slip system of the present utility model;
FIG. 2 is a plan view of the present utility model;
FIG. 3 is a schematic view of a slide tray cross-sectional layout of the present utility model;
FIG. 4 is a schematic view of the structure of the continuous jack of the present utility model;
FIG. 5 is a diagram showing the connection structure of the sliding rail and the sliding foundation
FIG. 6 is a schematic view of the installation of the present utility model
FIG. 7 is a schematic diagram of the workflow step (2) of the present utility model;
FIG. 8 is a schematic diagram of the workflow step (3) of the present utility model;
FIG. 9 is a schematic diagram of the workflow step (4) of the present utility model;
FIG. 10 is a schematic diagram of the workflow step (5) of the present utility model;
fig. 11 is a turnover operation diagram of the utility model in the whole pushing operation of the steel box girder.
Fig. 12 is a schematic view of a skid beam according to the present utility model.
Wherein, the names corresponding to the reference numerals are:
the sliding and positioning system for the pushing construction of the steel box girder comprises a 1-slideway girder, a 2-sliding support, a 3-steel box girder segment, a 4-200T continuous jack, a 5-sliding support transverse limiting plate, 6-finish rolling screw steel, a 7-three-way jack, an 8-pad girder B, a 9-electric winch, a 10-sliding foundation, an 11-embedded part, a 12-4mm thick stainless steel plate, a 13-grease layer, a 14-continuous top counter-force seat, a 15-steel stranded rope and a 16-steel box girder.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-12, the sliding positioning system in steel box girder pushing construction provided by the utility model comprises a pair of slide girders 1, a pair of slide brackets 2 slidably arranged on the slide girders 1, a 200T continuous jack 4 connected with one slide bracket 2 and used for driving the slide bracket to slide along the length direction of the slide girders 1, and finish rolling screw steel 6 connected between the pair of slide brackets 2 and used for enabling two slide brackets 2 to slide on the slide girders 1 synchronously; the slide bracket 2 is provided with a pair of supporting and positioning mechanisms for supporting and positioning the steel box girder segments 3.
The 200T continuous jack 4 is mounted on a continuous top reaction seat 14, and the continuous top reaction seat 14 is mounted on the sliding foundation 10. The 200T continuous jack 4 is connected with the slide support 2 through a steel stranded rope 16.
The supporting and positioning mechanism comprises a three-way jack 7 arranged on the sliding support 2 and a cushion beam B8 arranged on the three-way jack 7.
Two three-way jacks 7 on the same slide support 2 are symmetrically distributed on two sides of the top surface of the slide support 2.
Two pairs of slide support transverse limiting plates 5 matched with the slide rail beams 1 are arranged on the slide support 2, and each slide rail beam 1 is matched with one pair of slide support transverse limiting plates 5.
The slide rail beam 1 is fixedly arranged on a sliding foundation 10 in a construction site, an embedded part 11 is embedded in the sliding foundation 10, and the slide rail beam 1 is fixedly welded with the embedded part 11.
The top surface of the slideway beam 1 is provided with a smooth mechanism for reducing sliding friction resistance.
The smooth mechanism comprises a stainless steel plate 12 with the thickness of 4mm arranged on the top surface of the slideway beam 1, and a grease layer 13 smeared on the stainless steel plate 12 with the thickness of 4 mm.
The sliding and positioning system in the pushing construction of the steel box girder also comprises a pair of electric windlass 9 which are respectively connected with the other slide support 2, and the pair of electric windlass 9 are respectively arranged on the two slide girders 1.
The finish rolled deformed steel bars 6 are arranged in a pair, parallel to the same horizontal plane, and respectively located directly above the pair of slide beams 1.
Example 1
As shown in fig. 1 to 12, the steel box girder sliding and positioning system 15 of the present utility model comprises a pair of slide girders 1, a pair of slide brackets 2 slidably provided on the slide girders 1, a 200T continuous jack 4 connected to one slide bracket 2 for driving the slide bracket to slide along the length direction of the slide girders 1, and finish rolling screw steel 6 connected between the pair of slide brackets 2 for synchronously sliding the two slide brackets 2 on the slide girders 1; the slide bracket 2 is provided with a pair of supporting and positioning mechanisms for supporting and positioning the steel box girder segments 3.
The 200T continuous jack 4 is mounted on a continuous top reaction seat 14, and the continuous top reaction seat 14 is mounted on the sliding foundation 10. The 200T continuous jack 4 is connected with the slide support 2 through a steel stranded rope 16.
The utility model realizes the sliding by connecting the sliding support with the 200T continuous jack through the steel twisted rope. The 200T continuous jack operation steps are as follows: in the initial state, the front anchoring, the rear anchoring and loosening are carried out, the front oil cylinder stretches out, the rear oil pipe retracts, the steel strand is driven to advance, the rear anchoring and the front anchoring are carried out, the front oil cylinder retracts, the rear oil cylinder stretches out, the steel strand is driven to advance, and the steps are carried out, so that the dragging object slides and advances.
The welding device is simple in structure, scientific and reasonable in design and convenient to use, is used for quickly transferring the box Liang Kuaiti to the ring opening welding area for positioning, assembling and welding after the box Liang Kuaiti is spliced and welded into a whole section, and can effectively increase the welding operation surface in a limited operation area and improve the construction efficiency.
Example 2
As shown in fig. 1 to 12, the steel box girder sliding and positioning system 15 of the present utility model comprises a pair of slide girders 1, a pair of slide brackets 2 slidably provided on the slide girders 1, a 200T continuous jack 4 connected to one slide bracket 2 for driving the slide bracket to slide along the length direction of the slide girders 1, and finish rolling screw steel 6 connected between the pair of slide brackets 2 for synchronously sliding the two slide brackets 2 on the slide girders 1; the slide bracket 2 is provided with a pair of supporting and positioning mechanisms for supporting and positioning the steel box girder segments 3.
The 200T continuous jack 4 is mounted on a continuous top reaction seat 14, and the continuous top reaction seat 14 is mounted on the sliding foundation 10. The 200T continuous jack 4 is connected with the slide support 2 through a steel stranded rope 16.
The supporting and positioning mechanism comprises a three-way jack 7 arranged on the sliding support 2 and a cushion beam B8 arranged on the three-way jack 7. Two three-way jacks 7 on the same slide support 2 are symmetrically distributed on two sides of the top surface of the slide support 2. Two pairs of slide support transverse limiting plates 5 matched with the slide rail beams 1 are arranged on the slide support 2, and each slide rail beam 1 is matched with one pair of slide support transverse limiting plates 5.
The preferred technical scheme of the supporting and positioning mechanism is given in the embodiment 2 on the basis of the embodiment 1. The method comprises the following steps: the supporting and positioning mechanism comprises a three-way jack 7 arranged on the sliding support 2 and a cushion beam B8 arranged on the three-way jack 7. Two three-way jacks 7 on the same slide support 2 are symmetrically distributed on two sides of the top surface of the slide support 2. Two pairs of slide support transverse limiting plates 5 matched with the slide rail beams 1 are arranged on the slide support 2, and each slide rail beam 1 is matched with one pair of slide support transverse limiting plates 5.
The utility model is formed by fixing two groups of three-way jacks through transverse connection, and the upper parts of the jacks support the steel box girder through the bolster. The lower part of the sliding support is provided with a transverse limiting plate, so that larger transverse deviation in the sliding process is avoided. The two groups of sliding supports are longitudinally solidified through finish rolling deformed steel bars, so that the overall synchronism of the box body in the sliding process is enhanced.
Example 3
As shown in fig. 1 to 12, the steel box girder sliding and positioning system 15 of the present utility model comprises a pair of slide girders 1, a pair of slide brackets 2 slidably provided on the slide girders 1, a 200T continuous jack 4 connected to one slide bracket 2 for driving the slide bracket to slide along the length direction of the slide girders 1, and finish rolling screw steel 6 connected between the pair of slide brackets 2 for synchronously sliding the two slide brackets 2 on the slide girders 1; the slide bracket 2 is provided with a pair of supporting and positioning mechanisms for supporting and positioning the steel box girder segments 3.
The slide rail beam 1 is fixedly arranged on a sliding foundation 10 in a construction site, an embedded part 11 is embedded in the sliding foundation 10, and the slide rail beam 1 is fixedly welded with the embedded part 11.
The 200T continuous jack 4 is mounted on a continuous top reaction seat 14, and the continuous top reaction seat 14 is mounted on the sliding foundation 10. The 200T continuous jack 4 is connected with the slide support 2 through a steel stranded rope 16.
The supporting and positioning mechanism comprises a three-way jack 7 arranged on the sliding support 2 and a cushion beam B8 arranged on the three-way jack 7. Two three-way jacks 7 on the same slide support 2 are symmetrically distributed on two sides of the top surface of the slide support 2. Two pairs of slide support transverse limiting plates 5 matched with the slide rail beams 1 are arranged on the slide support 2, and each slide rail beam 1 is matched with one pair of slide support transverse limiting plates 5.
The embodiment 3 provides a more preferable technical solution for the slideway beam 1 based on the embodiment 2, specifically: the slide rail beam 1 is fixedly arranged on a sliding foundation 10 in a construction site, an embedded part 11 is embedded in the sliding foundation 10, and the slide rail beam 1 is fixedly welded with the embedded part 11.
Example 4
As shown in fig. 1 to 12, the steel box girder sliding and positioning system 15 of the present utility model comprises a pair of slide girders 1, a pair of slide brackets 2 slidably provided on the slide girders 1, a 200T continuous jack 4 connected to one slide bracket 2 for driving the slide bracket to slide along the length direction of the slide girders 1, and finish rolling screw steel 6 connected between the pair of slide brackets 2 for synchronously sliding the two slide brackets 2 on the slide girders 1; the slide bracket 2 is provided with a pair of supporting and positioning mechanisms for supporting and positioning the steel box girder segments 3.
The slide rail beam 1 is fixedly arranged on a sliding foundation 10 in a construction site, an embedded part 11 is embedded in the sliding foundation 10, and the slide rail beam 1 is fixedly welded with the embedded part 11.
The 200T continuous jack 4 is mounted on a continuous top reaction seat 14, and the continuous top reaction seat 14 is mounted on the sliding foundation 10. The 200T continuous jack 4 is connected with the slide support 2 through a steel stranded rope 16.
The supporting and positioning mechanism comprises a three-way jack 7 arranged on the sliding support 2 and a cushion beam B8 arranged on the three-way jack 7. Two three-way jacks 7 on the same slide support 2 are symmetrically distributed on two sides of the top surface of the slide support 2. Two pairs of slide support transverse limiting plates 5 matched with the slide rail beams 1 are arranged on the slide support 2, and each slide rail beam 1 is matched with one pair of slide support transverse limiting plates 5.
The top surface of the slideway beam 1 is provided with a smooth mechanism for reducing sliding friction resistance. The smooth mechanism comprises a stainless steel plate 12 with the thickness of 4mm arranged on the top surface of the slideway beam 1, and a grease layer 13 smeared on the stainless steel plate 12 with the thickness of 4 mm.
The embodiment 4 provides a more preferable technical solution based on the embodiment 3, specifically, the utility model further includes a smoothing mechanism for reducing the sliding friction resistance, which is disposed on the top surface of the slideway beam 1. The smoothing mechanism comprises a stainless steel plate 12 with the thickness of 4mm arranged on the top surface of the slideway beam 1, and a grease layer 13 smeared on the stainless steel plate 12 with the thickness of 4 mm.
Example 5
As shown in fig. 1 to 12, the steel box girder sliding and positioning system 15 of the present utility model comprises a pair of slide girders 1, a pair of slide brackets 2 slidably provided on the slide girders 1, a 200T continuous jack 4 connected to one slide bracket 2 for driving the slide bracket to slide along the length direction of the slide girders 1, and finish rolling screw steel 6 connected between the pair of slide brackets 2 for synchronously sliding the two slide brackets 2 on the slide girders 1; the slide bracket 2 is provided with a pair of supporting and positioning mechanisms for supporting and positioning the steel box girder segments 3.
The slide rail beam 1 is fixedly arranged on a sliding foundation 10 in a construction site, an embedded part 11 is embedded in the sliding foundation 10, and the slide rail beam 1 is fixedly welded with the embedded part 11.
The 200T continuous jack 4 is mounted on a continuous top reaction seat 14, and the continuous top reaction seat 14 is mounted on the sliding foundation 10. The 200T continuous jack 4 is connected with the slide support 2 through a steel stranded rope 16.
The finish rolled deformed steel bars 6 are arranged in a pair, parallel to the same horizontal plane, and respectively located directly above the pair of slide beams 1.
The supporting and positioning mechanism comprises a three-way jack 7 arranged on the sliding support 2 and a cushion beam B8 arranged on the three-way jack 7. Two three-way jacks 7 on the same slide support 2 are symmetrically distributed on two sides of the top surface of the slide support 2. Two pairs of slide support transverse limiting plates 5 matched with the slide rail beams 1 are arranged on the slide support 2, and each slide rail beam 1 is matched with one pair of slide support transverse limiting plates 5.
The top surface of the slideway beam 1 is provided with a smooth mechanism for reducing sliding friction resistance. The smooth mechanism comprises a stainless steel plate 12 with the thickness of 4mm arranged on the top surface of the slideway beam 1, and a grease layer 13 smeared on the stainless steel plate 12 with the thickness of 4 mm.
The sliding and positioning system in the pushing construction of the steel box girder also comprises a pair of electric windlass 9 which are respectively connected with the other slide support 2, and the pair of electric windlass 9 are respectively arranged on the two slide girders 1.
This example 5 gives a more preferred solution for finish rolling the deformed steel bar 6 on the basis of example 4, in particular: the finish rolled deformed steel bars 6 are arranged in a pair, parallel to the same horizontal plane, and respectively located directly above the pair of slide beams 1.
The embodiment 5 adds an electric hoist 9 on the basis of the embodiment 4, and specifically, the utility model further comprises a pair of electric hoists 9 respectively connected with the other slide support 2, and the pair of electric hoists 9 are respectively arranged on the two slide rail beams 1.
The working flow of the utility model is carried out according to the following steps:
(1) Firstly, installing a steel box girder sliding and positioning system, as shown in fig. 6;
(2) The steel box girder segments are assembled and welded on the assembly jig frame, and the steel box girder segments are unloaded onto the jacks from the assembly jig frame by utilizing the three-way jacks on the slide support, as shown in figure 7;
(3) The front end 200T continuous jack slides the steel box girder segment to the girth welding area, and the box body is adjusted to be in place by utilizing the three-way jack, as shown in fig. 8;
(4) Installing a temporary support, and unloading the steel box girder segment to the temporary support; the electric winch is utilized to retract the slide bracket to the initial position, as shown in figure 9;
(5) And (5) continuing to assemble and weld the next section, and repeating the steps (2) to (4), as shown in figure 10.
(6) The turnover operation of the steel box girder sliding and positioning system in the whole pushing operation of the steel box girder is shown in the figure 11, the left side is an assembling operation area for assembling and welding small steel box girder blocks to form a single section, and the welded section is slid to the right side through the sliding system to carry out ring opening welding and pushing, so that synchronous line production of box girder block assembly welding and whole section ring opening welding is realized, the welding operation area is enlarged in a limited operation area, and the construction efficiency is greatly improved.
Finally, it should be noted that: the above embodiments are merely preferred embodiments of the present utility model to illustrate the technical solution of the present utility model, but not to limit the scope of the present utility model. All the changes or color-rendering which are made in the main design idea and spirit of the utility model and which are not significant are considered to be the same as the utility model, and all the technical problems which are solved are included in the protection scope of the utility model; in addition, the technical scheme of the utility model is directly or indirectly applied to other related technical fields, and the technical scheme is included in the scope of the utility model.
Claims (9)
1. The slippage positioning system in the pushing construction of the steel box girder is characterized by comprising a pair of slideway girders (1), a pair of sliding supports (2) which are slidably arranged on the slideway girders (1), a 200T continuous jack (4) which is connected with one sliding support (2) and is used for driving the sliding support to slide along the length direction of the slideway girders (1), and finish rolling screw thread steel (6) which is connected between the pair of sliding supports (2) and is used for enabling two sliding supports (2) to slide on the slideway girders (1) synchronously; the slide support (2) is provided with a pair of supporting and positioning mechanisms for supporting and positioning the steel box girder segments (3).
2. The slippage positioning system in steel box girder pushing construction according to claim 1, wherein the supporting positioning mechanism comprises a three-way jack (7) arranged on the slippage support (2), and a cushion girder B (8) arranged on the three-way jack (7).
3. The slippage positioning system in steel box girder pushing construction according to claim 2 is characterized in that two three-way jacks (7) on the same sliding support (2) are symmetrically distributed on two sides of the top surface of the sliding support (2).
4. The sliding positioning system in pushing construction of the steel box girder according to claim 1 is characterized in that two pairs of sliding support transverse limiting plates (5) matched with the sliding girders (1) are arranged on the sliding support (2), and each sliding girder (1) is matched with one pair of sliding support transverse limiting plates (5).
5. The sliding positioning system in pushing construction of the steel box girder according to claim 1 is characterized in that the slideway girder (1) is fixedly arranged on a sliding foundation (10) in a construction site, an embedded part (11) is embedded in the sliding foundation (10), and the slideway girder (1) is fixedly welded with the embedded part (11).
6. The slippage positioning system in steel box girder pushing construction according to claim 1, wherein a slippage mechanism for reducing slippage friction resistance is arranged on the top surface of the slideway girder (1).
7. The slippage positioning system in pushing construction of the steel box girder according to claim 6, wherein the slippage mechanism comprises a stainless steel plate (12) with the thickness of 4mm arranged on the top surface of the slideway girder (1), and a grease layer (13) smeared on the stainless steel plate (12) with the thickness of 4 mm.
8. The slippage positioning system in steel box girder pushing construction according to claim 1, further comprising a pair of electric windlass (9) respectively connected with the other sliding support (2), wherein the pair of electric windlass (9) are respectively arranged on the two sliding girders (1).
9. The slippage positioning system in steel box girder pushing construction according to claim 1, wherein the pair of finish rolling deformed steel bars (6) are arranged in parallel on the same horizontal plane and are respectively positioned right above the pair of slideway girders (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321656397.0U CN220132753U (en) | 2023-06-27 | 2023-06-27 | Sliding positioning system in pushing construction of steel box girder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321656397.0U CN220132753U (en) | 2023-06-27 | 2023-06-27 | Sliding positioning system in pushing construction of steel box girder |
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| CN220132753U true CN220132753U (en) | 2023-12-05 |
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| CN202321656397.0U Active CN220132753U (en) | 2023-06-27 | 2023-06-27 | Sliding positioning system in pushing construction of steel box girder |
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