CN217325045U - Anchoring structure of temporary pier for cable-stayed bridge construction - Google Patents
Anchoring structure of temporary pier for cable-stayed bridge construction Download PDFInfo
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- CN217325045U CN217325045U CN202221040689.7U CN202221040689U CN217325045U CN 217325045 U CN217325045 U CN 217325045U CN 202221040689 U CN202221040689 U CN 202221040689U CN 217325045 U CN217325045 U CN 217325045U
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- strand bundle
- sliding plate
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Abstract
An anchoring structure of a temporary pier for cable-stayed bridge construction is used for connecting a first engineering interface located above and a second engineering interface located below and comprises a steel strand bundle and a cover beam arranged on the second engineering interface, a sliding plate is arranged between the bottom end of each cantilever of the first engineering interface and the cover beam, a plurality of first reserved holes for the steel strand bundle to pass through are formed in the sliding plate, and the aperture of each first reserved hole is larger than the diameter of the steel strand bundle; one end of the steel strand bundle passes through the first preformed hole to penetrate through the sliding plate and is anchored to the cover beam, and the other end of the steel strand bundle is anchored to the first engineering interface. By adopting the technical scheme, the vertical restraint on the main beam is more accurate and reliable, and the deformation sliding requirements of the main beam in the longitudinal direction and the transverse bridge direction are still met.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to an engineering construction's technical field especially relates to an anchor structure of interim mound of cable-stay bridge construction.
[ background of the invention ]
In the long-span cable-stayed bridge girder double cantilever work progress, in order to reduce the free cantilever length of girder, promote the stability in the girder double cantilever work progress, the security of guarantee girder structure sets up the interim mound of construction in girder sidespan one side usually, the interim mound of construction is connected with the girder, the interim mound of construction provides vertical support for the girder and carries out vertical restraint to the girder, the vertical and horizontal bridge of girder still allow to warp the slip.
The anchor between the temporary pier of current cable-stay bridge construction and the girder generally adopts articulated mode, has satisfied the girder at vertical and horizontal bridge to the deformation slip demand, but this mode is not accurate enough to the vertical restraint of girder for it is more difficult to the girder installation location.
[ Utility model ] content
The utility model aims to the deficiency that prior art exists, the utility model provides an anchor structure of interim mound of cable-stay bridge construction has the effect more accurate and reliable to the vertical restraint of girder to still satisfy the girder and slide the needs in the deformation of vertical and horizontal bridge direction.
In order to achieve the above purpose, the utility model provides a following technical scheme:
an anchoring structure of a temporary pier for cable-stayed bridge construction is used for connecting a first engineering interface located above and a second engineering interface located below, and comprises a steel strand bundle and a cover beam arranged on the second engineering interface, wherein a sliding plate is arranged between the bottom end of each cantilever of the first engineering interface and the cover beam, the sliding plate is provided with a plurality of first reserved holes for the steel strand bundle to pass through, and the aperture of each first reserved hole is larger than the diameter of the steel strand bundle; one end of the steel strand bundle passes through the first reserved hole to penetrate through the sliding plate and is anchored to the cover beam, and the other end of the steel strand bundle is anchored to the first engineering interface.
The utility model discloses further set up to: a plurality of longitudinal distribution beams are arranged above the cover beam, a plurality of transverse distribution beams are arranged above the longitudinal distribution beams, and a base plate is arranged between each transverse distribution beam and the sliding plate.
The utility model discloses further set up to: the sliding plate is made of polytetrafluoroethylene, and a stainless steel plate matched with the sliding plate is arranged between the bottom end of the sliding plate and the top end of the base plate.
The utility model discloses further set up to: and a leveling building block is arranged between the first engineering interface and the sliding plate.
The utility model discloses further set up to: an inclined plane is arranged above the leveling building block, the arc shape of the inclined plane is matched with the arc shape of the bottom end of the cantilever of the first engineering interface, and the inclined plane is attached to the bottom end of the cantilever of the first engineering interface.
The utility model discloses further set up to: the cantilever on two sides of the first engineering interface is respectively provided with a plurality of first anchoring holes for anchoring the steel strand bundle, and the bent cap is provided with a plurality of second anchoring holes corresponding to the first anchoring holes.
The utility model discloses further set up to: the steel strand bundle connects the leveling building block, the sliding plate, the stainless steel plate, the base plate, the transverse distribution beam and the longitudinal distribution beam in series in sequence to form an integrated structure.
The utility model discloses further set up to: and the leveling building block is provided with a plurality of second preformed holes for the steel strand bundle to pass through, and the aperture of the second preformed holes is larger than the diameter of the steel strand bundle.
The utility model discloses further set up to: the bent cap includes tie-beam and two sets of horizontal roof beams, the tie-beam can be dismantled and connect in two sets of between the horizontal roof beam.
The utility model discloses further set up to: the two ends of the connecting beam are respectively located in the middle of the two groups of transverse beams, and the first anchoring hole is formed in the connecting beam.
Compared with the prior art, the utility model discloses possess following advantage:
1. the sliding plate is easy to obtain a certain horizontal displacement range on the stainless steel plate by utilizing the low friction coefficient between the sliding plate made of polytetrafluoroethylene and the stainless steel plate, and the deformation sliding requirements of the main beam in the longitudinal direction and the transverse bridge direction can be met;
2. the diameters of the first preformed hole and the second preformed hole are larger than the diameter of the steel strand bundle, so that the steel strand bundle cannot limit horizontal displacement of the sliding plate and the leveling building block, and further the main beam is vertically constrained through the steel strand bundle and can still be longitudinally and transversely deformed in a sliding mode'
3. The free cantilever length of the main beam is reduced through the support of the leveling building blocks to the cantilever bottom end of the main beam, the stability of the main beam in the double-cantilever construction process is improved, and the safety of the main beam structure is guaranteed;
4. vertical restraint is carried out to the girder through adopting the steel strand bundle for vertical restraint to the girder is more accurate reliable.
[ description of the drawings ]
Fig. 1 is a schematic structural view of an anchoring structure of the present embodiment;
fig. 2 is a schematic top view of the bent cap of the present embodiment.
Reference numerals: 1. a capping beam; 11. a transverse beam; 12. a connecting beam; 121. a second anchor hole; 2. a longitudinal distribution beam; 3. a transverse distribution beam; 4. a slide plate; 5. leveling the building block; 6. a steel strand bundle.
[ detailed description ] embodiments
The present invention is further described with reference to the drawings and the exemplary embodiments, wherein like reference numerals are used to refer to like elements throughout. In addition, if a detailed description of the known art is not necessary to show the features of the present invention, it is omitted.
As shown in fig. 1 and fig. 2, the utility model discloses an anchor structure of temporary pier for cable-stayed bridge construction, which is used for connecting a first engineering interface located above and a second engineering interface located below, and comprises a steel strand bundle 6 and a cover beam 1 arranged on the second engineering interface, a sliding plate 4 is arranged between the bottom end of each cantilever of the first engineering interface and the cover beam 1, the sliding plate 4 is provided with a plurality of first preformed holes for the steel strand bundle 6 to pass through, and the aperture of the first preformed holes is larger than the diameter of the steel strand bundle 6; one end of the steel strand bundle 6 passes through the first reserved hole to penetrate through the sliding plate 4 and is anchored to the bent cap 1, and the other end of the steel strand bundle 6 is anchored to the first engineering interface. Because the aperture of first preformed hole is greater than the diameter of steel strand bundle 6 for slide 4 can obtain the horizontal displacement of certain extent, and then still can keep the horizontal displacement of certain extent after carrying out the vertical constraint of accurate firm to first engineering interface, satisfies the girder at vertical and the horizontal bridge to the deformation slip demand.
In this embodiment, the first engineering interface and the second engineering interface are respectively selected to be a main beam and a temporary construction pier, the temporary construction pier adopts a steel pipe support formed by four upright posts, and cantilevers on two sides of the main beam are respectively arranged above the temporary construction piers, so that vertical constraints are provided for cantilevers on two sides of the main beam, and stability of the cantilevers on two sides of the main beam in the construction process is guaranteed.
Specifically, bent cap 1 includes tie-beam 12 and two sets of transverse beam 11, and tie-beam 12 can be dismantled and connect between two sets of transverse beam 11, and the both ends of tie-beam 12 are located two sets of transverse beam 11's intermediate position respectively for tie-beam 12 is as an organic whole with two sets of transverse beam 11 connections, promotes bent cap 1 self stability. Wherein, the transverse beam 11 is respectively arranged on the two transversely distributed upright posts, the projection of the transverse beam 11 in the vertical direction can cover the projection of the two transversely distributed upright posts in the vertical direction, and the connecting beam 12 is positioned above the central position of each construction temporary pier.
Optionally, a plurality of longitudinal distribution beams 2 are arranged above the capping beam 1, the longitudinal distribution beams 2 are made of double-spliced 145a I-shaped steel, the plane where the web plate of each longitudinal distribution beam 2 is located is vertically arranged, and the longitudinal direction of each longitudinal distribution beam 2 is arranged along the length direction of the main bridge; meanwhile, the plurality of longitudinal distribution beams 2 are uniformly distributed above the capping beam 1, and the plurality of longitudinal distribution beams 2 are arranged in parallel, so that the longitudinal distribution beams 2 can uniformly distribute the pressure conducted by the main beam to the capping beam 1, and the reliability of the anchoring structure is improved.
Optionally, a plurality of transverse distribution beams 3 are arranged on the upper surface between the plurality of longitudinal distribution beams 2, the longitudinal direction of the transverse distribution beams 3 is perpendicular to the longitudinal direction of the longitudinal distribution beams 2, a backing plate is arranged between the transverse distribution beams 3 and the sliding plate 4, the backing plate is placed on the plurality of transverse distribution beams 3, and the projection of the backing plate in the vertical direction covers the projection of the plurality of transverse distribution beams 3 in the vertical direction.
Optionally, a stainless steel plate matched with the sliding plate 4 is arranged between the bottom end of the sliding plate 4 and the top end of the base plate, the bottom end of the sliding plate 4 is placed on the upper surface of the stainless steel plate, the sliding plate 4 is made of polytetrafluoroethylene, the sliding plate 4 has vertical rigidity and elastic deformation of a common plate-type rubber support, can bear vertical load and adapt to rotation of a beam end, and the low friction coefficient (mu f is less than or equal to 0.08) between the sliding plate 4 made of polytetrafluoroethylene and the stainless steel plate can meet the deformation sliding requirements of the main beam in the longitudinal direction and the transverse bridge direction.
Optionally, a leveling block 5 is disposed between the first engineering interface and the sliding plate 4, that is, the leveling block 5 is located between the bottom end of the cantilever of the main beam and the upper surface of the sliding plate 4, the height of the leveling block 5 may be determined according to the distance from the sliding plate 4 to the bottom end of the cantilever of the main beam, and if the bottom end of the cantilever of the main beam is in a straight state, the upper surface of the leveling block 5 is also in a straight state, so that the bottom end of the cantilever of the main beam can be attached to the leveling block 5. In this embodiment, the top of leveling block 5 is provided with the inclined plane, and the arc on inclined plane matches with the cantilever bottom arc at first engineering interface, laminates mutually between the cantilever bottom at inclined plane and first engineering interface for the cantilever of girder is firmly arranged in leveling block 5 on, improves the stability of anchor structure.
Optionally, the cantilevers on the two sides of the first engineering interface are respectively provided with a plurality of first anchoring holes for anchoring the steel strand bundle 6, and the bent cap 1 is provided with a plurality of second anchoring holes 121 corresponding to the first anchoring holes. The first anchoring holes are respectively vertically arranged on webs on two sides of the main beam, the second anchoring holes 121 are uniformly distributed on the connecting beams 12, the number of the second anchoring holes 121 formed in each connecting beam 12 is not less than four, and the number of the first anchoring holes is equal to that of the second anchoring holes 121. In this embodiment, the number of the second anchoring holes 121 formed in each connecting beam 12 is set to four, the four second anchoring holes 121 are respectively located at two ends of the connecting beam 12, which are far away from each other, the number of the second anchoring holes 121 is equal to the number of the first anchoring holes, and the axial direction of the second anchoring holes 121 and the axial direction of the first anchoring holes are both on the same straight line, so that the main beam and the capping beam 1 can be anchored by the steel strand bundle 6 in the following process.
Optionally, the leveling block 5, the sliding plate 4, the stainless steel plate, the base plate, the transverse distribution beam 3 and the longitudinal distribution beam 2 are sequentially connected in series by the steel strand bundle 6 to form an integrated structure. Wherein, leveling building block 5 sets up the second preformed hole that supplies steel strand bundle 6 to pass, the aperture between them of second preformed hole is greater than the diameter of steel strand bundle 6, the aperture of second preformed hole equals with the aperture of first preformed hole and sets up, because the aperture between them of first preformed hole and second preformed hole all is greater than the diameter of steel strand bundle 6, make the horizontal displacement between slide 4 and leveling building block 5 can't be restricted to steel strand bundle 6, and then make the girder do vertical restraint through steel strand bundle 6 and still can be in vertical and horizontal bridge to the slip deformation simultaneously.
The working conditions and principles of the embodiment are as follows:
when the cantilever of the main beam and the temporary construction pier need to be vertically constrained, firstly, a construction interface is built at the top end of the temporary construction pier, the guard rails which are vertically arranged are installed on the periphery of the construction interface, the transverse beams 11 are hoisted to the position above the temporary construction pier in a partitioning mode, after the two groups of transverse beams 11 are hoisted, the connecting beams 12 are hoisted to the position between the two groups of transverse beams 11, the connecting beams 12 are welded between the two groups of transverse beams 11, and therefore the construction of the capping beams 1 of the two groups of temporary construction piers is completed respectively.
The method comprises the following steps of laying a plurality of longitudinal distribution beams 2 on a connecting beam 12, enabling the longitudinal distribution beams 2 to be arranged along the direction of a main bridge, erecting a plurality of transverse distribution beams 3 on the longitudinal distribution beams 2, placing a base plate on the transverse distribution beams 3, and placing a stainless steel plate on the upper surface of the base plate. Wherein, the holes are pre-formed among the plurality of longitudinal distribution beams 2, among the plurality of transverse distribution beams 3, on the backing plate and the stainless steel plate, so that the subsequent steel strand bundle 6 can pass through the stainless steel plate, the backing plate, among the plurality of transverse distribution beams 3 and among the plurality of longitudinal distribution beams 2 in sequence.
Drilling a first preformed hole on a sliding plate 4 in advance, hoisting the sliding plate 4 to a preset position on a stainless steel plate, enabling the first preformed hole, a first anchoring hole and a second anchoring hole 121 to be on the same vertical straight line, selecting a leveling block 5 with proper height, enabling the heights of the upper surfaces of the leveling blocks 5 on two groups of temporary construction piers to be consistent, drilling a second preformed hole on the leveling block 5 in advance, placing the leveling block 5 at the preset position of the sliding plate 4, and enabling the second preformed hole to be respectively arranged corresponding to the first preformed hole; meanwhile, cantilevers on two sides of the main beam respectively support against the leveling building blocks 5, and the inclined planes are attached to the bottom ends of the cantilevers of the main beam.
Then, the fixed end of the steel strand bundle 6 sequentially penetrates through the main beam, the leveling building block 5, the sliding plate 4, the base plate and the longitudinal distribution beam 2 and is anchored on the capping beam 1 through the second anchoring hole 121, the steel strand bundle 6 is pre-tensioned on the top surface of the main beam through a jack, and the steel strand bundle 6 is anchored on the top surface of the main beam after the tension force of the steel strand bundle 6 reaches a set value required by actual construction.
To sum up, the application provides an assembled steel pipe support of external platform has following beneficial effect:
this application is through the accurate vertical restraint of accomplishing the girder of steel strand bundle to utilize the low coefficient of friction between slide and the corrosion resistant plate that polytetrafluoroethylene made, because the aperture between first preformed hole and the second preformed hole both all is greater than the diameter of steel strand bundle, make the slide can obtain the horizontal displacement of certain limit, and then still can keep the horizontal displacement of certain limit after carrying out the vertical restraint that accurate firm to first engineering interface, satisfy the girder at vertical and horizontal bridge to the deformation slip demand.
Some exemplary embodiments of the present invention will be appreciated by those skilled in the art that changes may be made in these exemplary embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (10)
1. The utility model provides an anchor structure of interim mound of cable-stay bridge construction for connect the first engineering interface that is located the top and the second engineering interface that is located the below, its characterized in that: the steel strand bundle-based cover beam structure comprises a steel strand bundle and a cover beam arranged on the second engineering interface, wherein a sliding plate is arranged between the bottom end of each cantilever of the first engineering interface and the cover beam, the sliding plate is provided with a plurality of first preformed holes for the steel strand bundle to pass through, and the aperture of each first preformed hole is larger than the diameter of the steel strand bundle; one end of the steel strand bundle passes through the first reserved hole to penetrate through the sliding plate and is anchored to the cover beam, and the other end of the steel strand bundle is anchored to the first engineering interface.
2. The anchoring structure of a temporary pier for cable-stayed bridge construction according to claim 1, wherein: a plurality of longitudinal distribution beams are arranged above the cover beam, a plurality of transverse distribution beams are arranged above the longitudinal distribution beams, and a base plate is arranged between each transverse distribution beam and the sliding plate.
3. The anchoring structure of the temporary pier for cable-stayed bridge construction according to claim 2, wherein: the sliding plate is made of polytetrafluoroethylene, and a stainless steel plate matched with the sliding plate is arranged between the bottom end of the sliding plate and the top end of the base plate.
4. The anchoring structure for temporary piers in cable-stayed bridge construction according to claim 3, wherein: and a leveling building block is arranged between the first engineering interface and the sliding plate.
5. The anchoring structure for temporary piers in cable-stayed bridge construction according to claim 4, wherein: an inclined plane is arranged above the leveling building block, the arc shape of the inclined plane is matched with the arc shape of the bottom end of the cantilever of the first engineering interface, and the inclined plane is attached to the bottom end of the cantilever of the first engineering interface.
6. The anchoring structure for temporary piers in cable-stayed bridge construction according to claim 5, wherein: the cantilever on the two sides of the first engineering interface is respectively provided with a plurality of first anchoring holes for anchoring the steel strand bundle, and the bent cap is provided with a plurality of second anchoring holes corresponding to the first anchoring holes.
7. The anchoring structure for temporary piers in cable-stayed bridge construction according to claim 6, wherein: the steel strand bundle connects the leveling building block, the sliding plate, the stainless steel plate, the base plate, the transverse distribution beam and the longitudinal distribution beam in series in sequence to form an integrated structure.
8. The anchoring structure for temporary piers for cable-stayed bridge construction according to claim 7, wherein: the leveling building block is provided with a plurality of second preformed holes for the steel strand bundle to pass through, and the aperture of the second preformed holes is larger than the diameter of the steel strand bundle.
9. The anchoring structure for temporary piers in cable-stayed bridge construction according to claim 8, wherein: the bent cap includes tie-beam and two sets of horizontal roof beams, the tie-beam can be dismantled and connect in two sets of between the horizontal roof beam.
10. The anchoring structure for temporary piers in cable-stayed bridge construction according to claim 9, wherein: the two ends of the connecting beam are respectively located in the middle of the two groups of transverse beams, and the first anchoring hole is formed in the connecting beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221040689.7U CN217325045U (en) | 2022-04-28 | 2022-04-28 | Anchoring structure of temporary pier for cable-stayed bridge construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221040689.7U CN217325045U (en) | 2022-04-28 | 2022-04-28 | Anchoring structure of temporary pier for cable-stayed bridge construction |
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| CN217325045U true CN217325045U (en) | 2022-08-30 |
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| CN202221040689.7U Active CN217325045U (en) | 2022-04-28 | 2022-04-28 | Anchoring structure of temporary pier for cable-stayed bridge construction |
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- 2022-04-28 CN CN202221040689.7U patent/CN217325045U/en active Active
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