CN212641217U - Support system for asymmetric installation of steel box short-tower cable-stayed bridge - Google Patents
Support system for asymmetric installation of steel box short-tower cable-stayed bridge Download PDFInfo
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- CN212641217U CN212641217U CN202020890409.6U CN202020890409U CN212641217U CN 212641217 U CN212641217 U CN 212641217U CN 202020890409 U CN202020890409 U CN 202020890409U CN 212641217 U CN212641217 U CN 212641217U
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Abstract
The utility model discloses a support system for asymmetric installation of a steel box short tower cable-stayed bridge, which comprises a pier body, wherein the pier body comprises a main pier and a side pier; the steel pipe support system comprises stand columns and transverse connection devices, the stand columns are arranged below the design positions of the side span sections, at least one stand column is arranged in each side span section in a matched mode, the transverse connection devices are arranged between the stand columns, and a steel pad box and a jack support system are arranged at the top of each stand column. Through the utility model discloses can utilize current pier shaft to combine steel pipe support system to form the enhancement support to the installation of roof beam section, guarantee the security of bridge construction.
Description
Technical Field
The utility model belongs to the technical field of the bridge construction technique and specifically relates to a braced system of asymmetric installation of steel case short tower cable-stay bridge.
Background
The common method for erecting the bridge on the river channel is to divide the bridge deck steel box girder into a plurality of unit blocks, namely girder sections, and then splice the plurality of unit blocks into a whole through pier bodies and brackets on site.
The existing bridge deck steel box girder is generally divided into smaller sections, the length of one section is about 8-10 m, then side span sections and middle span sections are symmetrically hoisted and installed by adopting a floating crane, stay cables are installed at the same time, after the installation is finished, closure sections of the side span and the middle span are closed, and the cable force and the structural linear shape of the stay cables are adjusted. The above mounting method has problems that: the box girder segmentation is many, and aerial installation process is numerous and diverse, and the precision control degree of difficulty is great, and the segmentation division is many, leads to the transportation on water comparatively frequently, influences the channel and normally passes. And if the hoisting sections need to be reduced, the strength of the supporting system needs to be ensured so as to better ensure the safety of bridge construction.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a braced system of short tower cable-stay bridge asymmetric installation of steel case can utilize current pier shaft to combine steel pipe support system to form the enhancement support to the beam section installation, guarantees the security of bridge construction.
In order to achieve the above purpose, the technical scheme of the utility model is that:
a support system for asymmetric installation of a steel box short-tower cable-stayed bridge comprises a pier body, wherein the pier body comprises a main pier and side piers, the main pier is arranged below the design position of a support section, and the side piers are arranged below the design position of an edge span section on the outermost side;
the steel pipe support system comprises stand columns and transverse connection devices, the stand columns are arranged below the design positions of the side span sections, at least one stand column is arranged in each side span section in a matched mode, the transverse connection devices are arranged between the stand columns, and a steel pad box and a jack support system are arranged at the top of each stand column.
Preferably, the stand top is provided with the capping steel sheet, be connected with cross reinforcing plate below the capping steel sheet, the outer end and the stand inner wall connection of reinforcing plate, steel mat box and jack supporting system all set up on the capping steel sheet.
Preferably, the steel cushion box is divided into an A-type steel cushion box and a B-type steel cushion box, the A-type steel cushion box mainly supports the web plate position of the steel box beam, and the B-type steel cushion box mainly supports the diaphragm plate position of the steel box beam.
More preferably, the A-shaped steel cushion box is arranged on the center of the upright column, two jacks are symmetrically arranged on two sides of the A-shaped steel cushion box, a central line connecting line of the two jacks coincides with a central line of the top surface of the upright column, and the B-shaped steel cushion box is arranged on one side of each of the jacks and the A-shaped steel cushion box.
More preferably, A shaped steel pad case includes A shaped steel pad case box and A shaped steel pad case baffle, A shaped steel pad case baffle is the cross setting in A shaped steel pad case box, and the outside limit all is connected with A shaped steel pad case box.
More preferably, B shaped steel pad case includes that B shaped steel fills up the case box and B shaped steel pad case baffle, B shaped steel pad case baffle is the cross setting in B shaped steel pad case box, and the outside limit all fills up the case box with B shaped steel and is connected, and fore-and-aft B shaped steel pad case baffle is provided with 2~ 4.
Preferably, the transverse connection device comprises two transverse rods, two vertical rods and two inclined rods, the vertical rods are connected between the transverse rods at intervals, and the inclined rods are connected to two opposite ends of each adjacent vertical rod.
Preferably, the stand adopts the steel-pipe pile to insert the rock face, and the steel-pipe pile bottom sets up 8~12m reinforced concrete pile foundation, and the reinforced concrete pile foundation anchor goes into rock stratum 3~6m, surpasses and irritates 3~6 m.
Preferably, a steel pipe support system is also arranged below the design position of the midspan section closest to the support section.
The asymmetric installation supporting system of the steel box short-tower cable-stayed bridge has the advantages that the stability is good by utilizing the existing pier body, the stable support can be formed on the supporting section and the side span section on the outermost side, the steel pad box is arranged at the top of the stand column, the web plate and the transverse partition plate of the supporting beam section can be better, and the safety in the installation process of the beam section is guaranteed.
Drawings
Fig. 1 is a schematic structural view of the cable-stayed bridge of the present invention.
Fig. 2 is a schematic structural view of the steel pipe support system and the pier body.
FIG. 3 is a schematic top view of the steel pipe support system.
FIG. 4 is a schematic perspective view of the A-type steel pad box.
FIG. 5 is a schematic perspective view of a B-type steel pad box.
In the figure, a pier body 1, a main pier 101, a side pier 102, a vertical column 2, a transverse connection device 3, a stay cable 4, a beam section 5, a riverbed 6, a jack 7, an A-type steel pad box 8, an A-type steel pad box body 801, an A-type steel pad box clapboard 802, a B-type steel pad box 9, a B-type steel pad box body 901, a B-type steel pad box clapboard 902, a steel box beam web 10 and a steel box beam transverse clapboard 11.
Detailed Description
The present invention will be further described with reference to the following specific examples, but the scope of the present invention is not limited to the following examples.
The utility model provides a braced system of asymmetric installation of steel case short tower cable-stay bridge, as shown in fig. 1, is used when steel case short tower cable-stay bridge carries out asymmetric installation, and full-bridge steel case roof beam divides into a plurality of beam section, includes: a mid-span closure segment H, a mid-span segment C symmetrically arranged relative to the mid-span closure segment Hn… … midspan section C2Midspan section C1Support section A0Side span section D1Side span section D2… … side span DnSide span closure section, side span section Dn+2Support section A0Is a beam section on which a cable tower is arranged, a midspan section Cn… … midspan section C2Midspan section C1All belong to a middle span section and an edge span section D1Side span section D2… … side span DnSide span closure section, side span section Dn+2All belong to the side span. Referring to fig. 2, the supporting system comprises a pier body 1, the pier body 1 comprises a main pier 101 and a side pier 102, the main pier 101 is arranged below the design position of the supporting section, and the side pier 102 is arranged at the outermost side span (side span D)n+2) Below the design location; still include steel pipe support system, steel pipe support system includes stand 2 and transverse connection device 3, and stand 2 sets up in the below of sidespan section design position, and every sidespan section matches at least and is provided with a stand 2, is provided with transverse connection device 3 between stand 2, and the top sets up steel mat case and jack supporting system. By utilizing the existing pier body, the stability is good, and the supporting section A can be supported0And an edge span section Dn+2Form stable support, set up the steel blanket case simultaneously at the stand top, web and the cross slab of support beam section that can be better guarantee the security in the beam section installation.
Preferably, the top of the upright post 2 is provided with a capping steel plate, a cross-shaped reinforcing plate is connected below the capping steel plate, the reinforcing plate is arranged in the upright post 2, the outer end of the reinforcing plate is connected with the inner wall of the upright post 2, a stiffening plate is welded on the outer wall of the upright post 2 connected with the capping steel plate, one side of the stiffening plate is connected with the upright post 2, and the other side of the stiffening plate is connected with the capping steel plate, so that the stability of the top support of the upright post is. The steel pad box and the jack supporting system are both arranged on the top sealing steel plate.
Preferably, the steel cushion box divide into A shaped steel pad box 8 and B shaped steel pad box 9 altogether, and A shaped steel pad box 8 mainly supports steel case web 10 position, and B shaped steel pad box 9 mainly supports steel case roof beam diaphragm 11 position, supports two important positions of steel case roof beam respectively through two kinds of steel pad boxes, better guarantee the security in the beam section installation. With reference to fig. 3, this embodiment further provides a preferred arrangement form of the steel pad box and the jacks 7, the a-type steel pad box 8 is disposed above the center of the upright 2, two jacks 7 are symmetrically disposed on both sides, the centerline of the two jacks 7 coincides with the centerline of the top surface of the upright 2, and the B-type steel pad box 9 is disposed on one side of the jacks 7 and the a-type steel pad box 8. The height of the beam section 5 can be adjusted through the jack 7, so that the line type can be adjusted more conveniently in the installation process of the bridge deck steel box beam, and the line type control precision is higher.
More preferably, as shown in fig. 4, this embodiment further provides a specific structure of an a-type steel cushion box 8, where the a-type steel cushion box 8 includes an a-type steel cushion box body 801 and an a-type steel cushion box partition plate 802, the a-type steel cushion box partition plate 802 is disposed in the a-type steel cushion box body 801 in a cross manner, and the outer sides of the a-type steel cushion box body 801 are connected to each other. The A-type steel pad box partition plate 802 enables the A-type steel pad box 8 to be higher in supporting strength.
More preferably, as shown in fig. 5, the embodiment further provides a concrete structure of a B-type steel pad box 9, the B-type steel pad box 9 includes a B-type steel pad box body 901 and a B-type steel pad box partition 902, the B-type steel pad box partition 902 is arranged in the B-type steel pad box body 901 in a cross manner, the outer side edges of the B-type steel pad box partition 902 are connected with the B-type steel pad box body 901, and the longitudinal B-type steel pad box partition 902 is provided with 2 to 4 blocks. Because the B-type steel cushion box 9 is used for supporting the position of the steel box beam diaphragm 11 and is located at the outer side, and the length is longer than that of the a-type steel cushion box 8, the longitudinal B-type steel cushion box diaphragms 902 are required to be arranged more than needed, and are shown in the figure as 3 blocks.
Preferably, the transverse connection device 3 comprises two transverse rods, two vertical rods and two inclined rods, the vertical rods are connected between the transverse rods at intervals, and the inclined rods are connected to two opposite ends of each adjacent vertical rod. The cross rods, the vertical rods and the inclined rods form a triangular stable supporting structure, so that the steel pipe support system can be ensured to form a whole, and the bridge deck steel box girder can be better stably supported.
Preferably, for guaranteeing the stability of stand 2 in the underwater construction, the stand 2 adopts the steel-pipe pile to insert the rock face, sets up 8~12m reinforced concrete pile foundation at the bottom of the steel-pipe pile, and 3~6m of rock stratum are gone into in the anchor of reinforced concrete pile foundation, surpass irritate 3~6 m. In the embodiment, a 10m reinforced concrete pile foundation is specifically arranged at the pile bottom of the steel pipe pile, and the reinforced concrete pile foundation is anchored into a rock stratum by 5m and is over-grouted by 5 m.
Preferably, the midspan section closest to the strut section (midspan section C)1) A steel pipe bracket system is also arranged below the design position, and the midspan section C1And a steel pipe bracket system is arranged below the support section close to the support section, so that the normal passing of a middle channel of a river is not influenced, and the installation safety of the whole bridge can be better kept.
Claims (9)
1. The utility model provides a braced system of asymmetric installation of steel case short tower cable-stay bridge, includes the pier shaft, its characterized in that:
the pier body comprises a main pier and a side pier, the main pier is arranged below the design position of the supporting section, and the side pier is arranged below the design position of the side span section on the outermost side;
the steel pipe support system comprises stand columns and transverse connection devices, the stand columns are arranged below the design positions of the side span sections, at least one stand column is arranged in each side span section in a matched mode, the transverse connection devices are arranged between the stand columns, and a steel pad box and a jack support system are arranged at the top of each stand column.
2. The asymmetrically installed support system of the steel box short tower cable-stayed bridge according to claim 1, characterized in that:
the top of the upright post is provided with a capping steel plate, a cross-shaped reinforcing plate is connected below the capping steel plate, the outer end of the reinforcing plate is connected with the inner wall of the upright post, and the steel pad box and the jack jacking system are both arranged on the capping steel plate.
3. The asymmetrically installed support system of the steel box short tower cable-stayed bridge according to claim 2, characterized in that:
the steel pad case divide into A shaped steel pad case and B shaped steel pad case altogether, and A shaped steel pad case mainly supports steel case roof beam web position, and B shaped steel pad case mainly supports steel case roof beam cross slab position.
4. The asymmetrically installed support system of the steel box short tower cable-stayed bridge according to claim 3, characterized in that:
the A-shaped steel pad box is arranged on the center of the stand column, two jacks are symmetrically arranged on two sides of the A-shaped steel pad box, a central line connecting line of the two jacks coincides with a central line of the top surface of the stand column, and the B-shaped steel pad box is arranged on one side of each jack and the A-shaped steel pad box.
5. The asymmetrically installed support system of the steel box short tower cable-stayed bridge according to claim 3 or 4, characterized in that:
a shaped steel pad case includes A shaped steel pad case box and A shaped steel pad case baffle, A shaped steel pad case baffle is the cross setting in A shaped steel pad case box, and the outside limit all is connected with A shaped steel pad case box.
6. The asymmetrically installed support system of the steel box short tower cable-stayed bridge according to claim 3 or 4, characterized in that:
b shaped steel pad case includes that B shaped steel fills up the case box and B shaped steel pad case baffle, B shaped steel pad case baffle is the cross setting in B shaped steel pad case box, and the outside limit all fills up the case box with B shaped steel and is connected, and fore-and-aft B shaped steel pad case baffle is provided with 2~ 4.
7. The asymmetrically installed support system of the steel box short tower cable-stayed bridge according to claim 1, characterized in that:
the transverse connection device comprises two transverse rods, vertical rods and inclined rods, the two transverse rods are arranged in parallel, the vertical rods are connected between the transverse rods at intervals, and the inclined rods are connected to two opposite ends of the adjacent vertical rods.
8. The asymmetrically installed support system of the steel box short tower cable-stayed bridge according to claim 1, characterized in that:
the stand adopts the steel-pipe pile to insert the rock face, and the steel-pipe pile bottom sets up 8~12m reinforced concrete pile foundation, and 3~6m of rock stratum are gone into in the anchor of reinforced concrete pile foundation, surpass and irritate 3~6 m.
9. The asymmetrically installed support system of the steel box short tower cable-stayed bridge according to claim 1, characterized in that:
and a steel pipe bracket system is also arranged below the design position of the midspan section closest to the support section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020890409.6U CN212641217U (en) | 2020-05-25 | 2020-05-25 | Support system for asymmetric installation of steel box short-tower cable-stayed bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020890409.6U CN212641217U (en) | 2020-05-25 | 2020-05-25 | Support system for asymmetric installation of steel box short-tower cable-stayed bridge |
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| CN212641217U true CN212641217U (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020890409.6U Active CN212641217U (en) | 2020-05-25 | 2020-05-25 | Support system for asymmetric installation of steel box short-tower cable-stayed bridge |
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| CN (1) | CN212641217U (en) |
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