CN212404889U - Tower structure is detained in single arch rib of steel case arched bridge vertical rotation construction - Google Patents
Tower structure is detained in single arch rib of steel case arched bridge vertical rotation construction Download PDFInfo
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- CN212404889U CN212404889U CN202020834859.3U CN202020834859U CN212404889U CN 212404889 U CN212404889 U CN 212404889U CN 202020834859 U CN202020834859 U CN 202020834859U CN 212404889 U CN212404889 U CN 212404889U
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Abstract
The utility model belongs to the technical field of bridge construction, and relates to a buckling tower structure for single arch rib vertical rotation construction of a steel box arch bridge, which comprises a buckling tower upright post, a buckling tower inclined post, a buckling tower flat web member, a buckling tower inclined web member and a transverse clapboard; stiffening rib plates I and upright post steel pipe openings are equally arranged at the bottom of the embedded section of the buckling tower upright post at the lower end of the buckling tower upright post along the periphery, the upright post steel pipe openings are alternately arranged at the embedded section of the buckling tower upright post between the adjacent stiffening rib plates I, and each stiffening rib plate I is welded with the corresponding buckling tower upright post; horizontal anchoring reinforcing bars penetrate into the holes formed in the stiffening rib plate I and the holes formed in the upright steel pipes, the horizontal anchoring reinforcing bars on each layer and the bottom plate I at the lower end of the buckling tower upright are welded into a whole, the welding positioning reinforcing bars are equally distributed at the bottom of the bottom plate I along the circumference, and a reinforcing steel bar net is embedded in concrete under the bottom plate I, so that the existing construction mode of buckling the tower is solved, and the problems of low reliability of embedded anchoring of the buckling tower upright and difficulty in installing the buckling tower upright and the web members exist.
Description
Technical Field
The utility model belongs to the technical field of the bridge construction, a tower structure is detained in single arch rib vertical rotation construction of steel case arched bridge is related to.
Background
With the application of the steel structure on various bridges, the spanning capacity of the bridge is greatly improved, the stability of a bearing structure of the bridge is improved, and the steel box arch is favored by bridge designers with super strong spanning capacity. Due to the restrictions of terrain, climate and geological hydrology, the arch bridge is often constructed by adopting a swivel construction method, when the arch rib rotates vertically, the arch rib is lifted and lowered by taking a vertical rotation hinge as a rotation center through tensioning the buckling cable, and the buckling tower bears the load transmitted by the buckling cable. As a load-bearing structure, most of the traditional buckling towers adopt anchor bolts to connect embedded parts and buckling tower columns by embedding steel plates and profile steel in concrete, the shearing resistance of the bolts is weak, the anchoring effect is poor, and the safety and reliability of the whole buckling tower are low. When the upright columns and the web members are welded on site, a large amount of welding operation at high altitude on site is needed in the whole construction process, and due to the influence of strong wind weather and high altitude operation, the construction safety risk is high, and the quality of welding seams is difficult to control.
The utility model provides a single arch rib vertical rotation construction buckling tower structure and construction method of steel box arch bridge, aiming at the defects of the traditional arch bridge construction, the pre-embedded section of the buckling tower upright post adopts a perforated stiffening rib plate and an upright post steel pipe, horizontal anchoring reinforcing steel bars are penetrated in the holes of the stiffening rib plate and the upright post steel pipe, the firm anchoring of the pre-embedded section of the buckling tower upright post in the concrete is ensured, and the structure is safer and more reliable; the vertical column and the inclined column are welded into a whole in a factory, the web member connecting node and the buckling tower anchoring area are welded, the vertical column truss sheet and the inclined column truss sheet are taken as installation units, the web members on the site are connected through flanges, the construction is simple and convenient, and the operation is easy for workers. The problems of low reliability of pre-buried anchoring of the stand column, difficult installation of the stand column and the web member, difficult guarantee of the quality of welding seams, high risk of high-altitude operation and the like are solved, the construction quality is ensured, the safety risk is reduced, the construction is convenient, and the construction cost is reduced.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model discloses a solve the current construction mode of detaining the tower, exist and detain the pre-buried anchor reliability of tower stand low, detain tower stand and web member installation difficulty, the welding seam quality is difficult to guarantee and the big problem of high altitude construction risk, provide a steel box arched bridge single arch rib erects to change construction and detains tower structure.
In order to achieve the purpose, the utility model provides a single arch rib vertical rotation construction buckling tower structure of a steel box arch bridge, which comprises buckling tower upright posts consisting of two buckling tower upright posts and two buckling tower inclined upright posts, wherein a plurality of groups of buckling tower flat web members are arranged between the buckling tower upright posts and the corresponding buckling tower inclined upright posts, the buckling tower inclined web members are arranged between the adjacent buckling tower flat web members, and transverse partition plates are arranged between the buckling tower flat web members;
the lower end of each buckling tower upright post is a buckling tower upright post embedded section, the bottom of each buckling tower upright post embedded section is provided with stiffening rib plates I and upright post steel pipe openings along the periphery in an equal dividing manner, the upright post steel pipe openings are arranged at the buckling tower upright post embedded sections between the adjacent stiffening rib plates I at intervals, and each stiffening rib plate I is welded with the corresponding buckling tower upright post; a plurality of rows of openings are longitudinally formed in each stiffening rib plate I, horizontal anchoring steel bars penetrate through the openings in the stiffening rib plates I and the openings in the upright post steel pipes, the horizontal anchoring steel bars in each layer and a bottom plate I at the lower end of the upright post of the buckling tower are welded into a whole, positioning steel bars are welded at the bottom of the bottom plate I in equal intervals along the circumference, and reinforcing steel bar meshes are embedded in concrete below the bottom plate I;
detain tower upper portion and set up the knot tower anchor district that is used for fixed balance cable, detain tower anchor district including fixing two groups distribution beam and bottom plate II on detaining the tower oblique stand, set up stiffening rib II in bottom plate II, set up at the roof on II surfaces of bottom plate and be used for connecting the roof and correspond the web of detaining the tower oblique stand, distribution beam bottom welding is on the roof.
Furthermore, a buckling tower upright post formed by the buckling tower upright post and the buckling tower inclined upright post is of a variable cross section along the direction of the arch rib, and the width of the buckling tower upright post is equal to that of the arch rib in the vertical direction.
Furthermore, the buckling tower flat web members and the buckling tower diagonal web members are connected in situ by adopting upright flanges.
Furthermore, a triangle with the side length of 2cm is cut at the intersection of the welding seams of the stiffening rib plate I and the bottom plate I.
Furthermore, the welding position of the stiffening rib plate I and the corresponding buckling tower upright post and the hole opening position of the upright post steel pipe are staggered by 22.5 degrees.
Furthermore, the distribution beam is made of double-spliced section steel, and an upper web plate of the buckling tower inclined upright column is stepped.
Furthermore, a triangle with the side length of 2cm is cut at the intersection of the stiffening rib plate II and the web plate welding seam.
Further, one section of the buckling tower vertical column inserted into the upper rotating disc is a buckling tower vertical column embedded section, and one section of the buckling tower inclined column inserted into the upper rotating disc is a buckling tower inclined column embedded section.
The beneficial effects of the utility model reside in that:
1. the utility model discloses a single arch rib vertical rotation construction buckling tower structure of a steel box arch bridge, the whole buckling tower is of an all-steel structure, each component of the buckling tower upright post is simple, convenient and quick to process, and the main components realize the industrialized processing production; the vertical column truss sheet and the inclined vertical column truss sheet are used as installation units for the buckling tower upright column main body, and the buckling tower web members are connected on site through upright column flanges, so that the construction is simple and convenient, the operation of workers is easy, the installation speed and the installation quality are greatly improved, and the installation labor cost is reduced.
2. The utility model discloses a tower structure is buckled in single arch rib vertical rotation construction of steel case arched bridge, overcome the defect that the tower stand pre-buried anchor reliability is low, detain tower stand and web member installation difficulty of prior art knot, this knot tower structure can satisfy vertical rotation knot tower each item mechanical properties, detain tower stand pre-buried section and adopt trompil stiffening rib board and stand steel pipe, penetrate horizontal anchor reinforcing bar in stiffening rib board trompil and stand steel pipe trompil, and adopt vertical anchor reinforcing bar to weld each layer of horizontal anchor reinforcing bar and bottom plate into whole, guarantee to detain tower stand pre-buried section firm anchoring in the concrete, make the structure more safe and reliable; detain tower anchor district according to balanced cable load direction, set up step web to regional roof and web extension in detaining tower anchor below, better distribution and transmission balanced cable load, and detain the about 10m within range fill C50 concrete of top of the tower end, the reinforcing is detained tower anchor district department and is detained the node intensity of tower stand, makes and detains the tower structure more firm.
3. The utility model discloses a tower structure is detained in single arch rib of steel case arched bridge erects the construction of changeing, simple structure, and the atress is clear and definite, detains tower simple to operate, and bearing capacity is high to guarantee structure safe and reliable, effectively solved and detain the pre-buried anchor reliability of tower stand low, detain tower stand and web member installation difficulty, the welding seam quality is difficult to guarantee and the big problem of high altitude construction risk.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a front view of a single arch rib vertical rotation construction tower fastening structure of a steel box arch bridge of the utility model;
FIG. 2 is a side view of the single arch rib vertical rotation construction tower fastening structure of the steel box arch bridge of the utility model;
FIG. 3 is a sectional view along the direction 1-1 in FIG. 1 of the buckling tower for single arch rib vertical rotation construction of the steel box arch bridge of the utility model;
FIG. 4 is a sectional view taken along the direction 2-2 in FIG. 1 of the buckling tower for single arch rib vertical rotation construction of the steel box arch bridge of the utility model;
FIG. 5 is a sectional view along 3-3 of FIG. 1 in the single arch rib vertical rotation construction buckle tower of the steel box arch bridge of the utility model;
FIG. 6 is a schematic structural diagram of a pre-embedded section of a buckling tower upright post in the buckling tower for single arch rib vertical rotation construction of the steel box arch bridge of the utility model;
FIG. 7 is a sectional view along A-A of FIG. 6 in the construction buckling tower for single arch rib vertical rotation of the steel box arch bridge of the utility model;
FIG. 8 is a sectional view along the B-B direction of FIG. 6 in the buckling tower for single arch rib vertical rotation construction of the steel box arch bridge of the utility model;
FIG. 9 is a cross-sectional view along C-C of FIG. 6 in the buckling tower for single arch rib vertical rotation construction of the steel box arch bridge of the utility model;
FIG. 10 is a partial enlarged view of a tower-fastening anchoring area in the steel box arch bridge single arch rib vertical rotation construction tower-fastening of the present invention;
FIG. 11 is a cross-sectional view along the direction D-D of FIG. 10 in the buckling tower for single arch rib vertical rotation construction of the steel box arch bridge of the present invention;
FIG. 12 is a cross-sectional view along the direction E-E of FIG. 10 in the buckling tower for single arch rib vertical rotation construction of the steel box arch bridge of the present invention;
FIG. 13 is a sectional view along the direction F-F of FIG. 10 in the buckling tower for single arch rib vertical rotation construction of the steel box arch bridge of the utility model;
FIG. 14 is a sectional view along the direction G-G of FIG. 10 in the buckling tower for single arch rib vertical rotation construction of the steel box arch bridge of the present invention;
FIG. 15 is a sectional view taken along the direction H-H in FIG. 10 of the buckling tower for single arch rib vertical rotation construction of the steel box arch bridge of the present invention;
fig. 16 is the structural schematic diagram of the middle web of the steel box arch bridge single arch rib vertical rotation construction buckle tower of the utility model.
Reference numerals: the buckling tower vertical column comprises a buckling tower vertical column 1, a buckling tower inclined vertical column 2, a buckling tower vertical column embedded section 3, a buckling tower inclined vertical column embedded section 4, a buckling tower inclined web member 5, a buckling tower flat web member 6, a balance cable 7, concrete 8, a flange plate 9, an upper rotary disc 10, a cable saddle 11, a buckling tower anchoring area 12, a diaphragm plate 13, a stiffening rib plate I14, an anchoring steel bar 15, a bottom plate I16, a positioning steel bar 17, a reinforcing steel bar net 18, a distribution beam 19, a stiffening rib plate II 20, a bottom plate II 21, a top plate 22 and a web plate 23.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
The buckling tower structure for the single arch rib vertical rotation construction of the steel box arch bridge as shown in fig. 1-16 is a variable cross-section truss structure formed by steel pipes, the buckling tower is fixedly installed on an upper rotary plate 10 in a single arch rib framing rotation body of the arch bridge, a buckling tower main body is formed by four buckling tower upright columns which are respectively two vertical buckling tower upright columns 1 and two inclined buckling tower inclined columns 2, so that a buckling tower longitudinal bridge direction (along the arch rib direction) cable tower is a variable cross section, and a transverse bridge direction (perpendicular to the arch rib direction) cable tower is equal in width. One section of the upper rotating disc 10 inserted into the tower buckling upright post is a tower buckling upright post embedded section, one section of the upper rotating disc 10 inserted into the tower buckling upright post 1 is a tower buckling upright post embedded section 3, and one section of the upper rotating disc 10 inserted into the tower buckling inclined upright post 2 is a tower buckling inclined upright post embedded section 4. Detain and be provided with 7 groups between tower upright post 1 and the corresponding tower oblique upright post 2 and detain tower flat web members 6, the tower oblique web members 5 are detained in the installation between the adjacent tower flat web members 6 of detaining, detain and install horizontal partition plate 13 between the tower flat web members 6, detain and connect into an entirety by horizontal tower flat web members 6 of detaining, vertical tower oblique web members 5 of detaining and horizontal partition plate 13 between tower upright post 1 and the tower oblique upright post 2 of detaining, detain tower flat web members 6, detain and adopt stand ring flange 9 field connection between tower oblique web members 5.
And a buckling tower anchoring area 12 is arranged at the upper part of the buckling tower, a balance cable 7 is arranged between the buckling tower anchoring area 12 and the end part of the upper rotary disc 10, and C50 concrete 8 is poured in the range of about 10m at the top end of the cable tower for enhancing the node strength of the buckling tower upright column at the buckling tower anchoring area 12. The cable saddle 11 is fixedly arranged at the top end of the buckling tower and plays a role in facilitating the buckling and cable steering.
Detain pre-buried section bottom of tower stand and set up stiffening rib I14 and stand steel pipe trompil along peripheral 8 equallys, stand steel pipe trompil is alternate to be seted up and is detained the pre-buried section of tower stand between adjacent stiffening rib I14, and every stiffening rib I14 welds with the knot tower stand that corresponds, and welding position staggers 22.5 with stand steel pipe trompil position. A2 cm-side triangle is cut at the intersection of the welding seams of the stiffening rib plate I14 and the bottom plate I16, so that a bidirectional or three-directional same-sign tensile stress field is prevented from being formed at the intersection, the development of plastic deformation of materials is limited, and the steel becomes brittle.
Every I14 vertical 3 rows of trompils that set up of stiffening rib board, penetrate horizontal anchor bar 15 in I14 trompils of stiffening rib board and the stand steel pipe trompil, and adopt vertical anchor bar 15 to weld into whole with each layer horizontal anchor bar 15 and I16 of bottom plate, I16 steel sheet bottom of bottom plate welds positioning bar 17 along 8 equal divisions on the circumference, pre-buried reinforcing bar mat 18 in the concrete 8 under I16 of bottom plate, realize the fixing of I16 of bottom plate and reinforcing bar mat 18 through positioning bar 17 and reinforcing bar mat 18's cooperation, and then guarantee that I16 of bottom plate goes up the pre-buried section of knot tower stand firmly anchor in concrete 8.
The buckling tower anchoring area 12 comprises two groups of distribution beams 19 and a bottom plate II 21 which are fixed on the buckling tower inclined upright post 2, a stiffening rib plate II 20 arranged in the bottom plate II 21, a top plate 22 arranged on the surface of the bottom plate II 21 and a web plate 23 used for connecting the top plate 22 with the corresponding buckling tower inclined upright post 2, the web plate 23 and the top plate 22 are sequentially welded at the corresponding position of the buckling tower inclined upright post 2, the bottom of the distribution beam 19 is welded on the top plate 22, the distribution beam 19 adopts double-spliced steel, the force direction of the balance cable 7 is ensured that the bottom plate II 21 is vertical to the force of the balance cable 7, the web plate 23 at the corresponding position is set to be step-shaped, the top plate 22 and the web plate 23 in the area below the buckling tower anchoring area are lengthened; the stiffening rib plate II 20 is welded below the distribution beam 19 and on two sides of the web plate 23 of the lengthened area, the stability of the web plate 23 is ensured, a triangle with the side length of 2cm is cut at the intersection of the welding seam of the stiffening rib plate II 20 and the web plate 23, a bidirectional or three-way same-sign tensile stress field is prevented from being formed at the intersection, the development of plastic deformation of materials is limited, and steel becomes brittle.
A construction method of a single arch rib vertical rotation construction tower buckling structure of a steel box arch bridge comprises the following steps:
A. processing the parts: according to design requirements, sequentially processing all component parts of the embedded section of the buckling tower upright post, in order to improve blanking precision, cutting a steel plate by using a cutting machine, and mechanically forming holes and accurately positioning the holes;
B. and (3) constructing a pre-embedded section of the buckling tower column: welding all components of the embedded section into a whole in a factory, performing peripheral girth welding on a welding line, continuously welding corners, avoiding weld craters caused by arc striking and arc falling, accurately positioning the embedded section of the upright post before installation, penetrating horizontal anchoring steel bars 15 into the stiffening rib plates I14 and the openings of the upright post steel pipes after the embedded section of the upright post is installed in place, welding all layers of horizontal anchoring steel bars 15 and the bottom plate I16 into a whole by adopting vertical anchoring steel bars 15, ensuring that the embedded section of the upright post of the buckling tower is firmly anchored in concrete 8, and ensuring that the embedded section 3 of the upright post of the buckling tower and the embedded section 4 of the inclined upright post of the buckling tower have the same construction method;
C. and (3) installing buckling tower columns: welding two buckling tower vertical columns 1, two buckling tower inclined upright columns 2, a buckling tower inclined web member 5 and a buckling tower flat web member 6 between the buckling tower vertical columns 1 and the buckling tower inclined upright columns 2 into a whole in a factory, completing the welding of connecting nodes of the buckling tower inclined web members 5 and the buckling tower flat web members 6 between the buckling tower vertical columns 1 and the buckling tower inclined upright columns 2, and completing the welding of buckling tower anchoring areas 12 at the buckling tower inclined web members 5; after welding and processing of the buckling tower upright post, transporting the buckling tower upright post to the site, respectively completing installation of a buckling tower upright post 1 and a buckling tower inclined upright post 2 by taking an upright post truss sheet and an inclined upright post truss sheet as installation units, and performing temporary positioning after the installation;
the method comprises the following steps that groove welding seams are adopted for buckling tower upright post joints, grooves of steel pipes can be mechanically cut and polished, butt joints are full penetration welding seams, the positions of the welding seams of all sections of the steel pipes are staggered by more than 500mm during butt joint, circumferential steel gaskets (or bottoms are welded on the inner walls of the pipes) with the thickness of 4-6 mm and the width of 40mm are added in the steel pipes during welding, the first layer of welding seams need to be welded under the protection of carbon dioxide, all the layers are automatically welded, the joints are intersected, the grooves of intersecting lines are blanked by an intersecting line cutting machine, and when the intersecting joints are cut, the gap width is checked to meet the specification and design requirements through pre-assembly;
D. detain oblique web member of tower, detain the installation of the flat web member of tower: the web members between the buckling tower vertical column 1 and the buckling tower inclined column 2 are connected on site by a column flange 9;
E. installing a diaphragm plate: a transverse partition plate 13 is arranged between the buckling tower flat web members 6, the periphery of the transverse partition plate 13 is connected with 4 buckling tower flat web members 6 on the periphery in a welding manner, and the stability of the buckling tower vertical column 1 and the buckling tower inclined column 2 is enhanced;
F. cable saddle installation: and after the buckling tower main body is installed, installing a cable saddle 11, and pouring concrete 8 with the thickness of about 10m into the column steel pipes of the buckling tower vertical column 1 and the buckling tower inclined column 2 and the cable saddle 11 at the top end of the buckling tower.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (8)
1. A single arch rib vertical rotation construction buckling tower structure of a steel box arch bridge is characterized by comprising buckling tower upright columns consisting of two buckling tower upright columns and two buckling tower inclined upright columns, wherein a plurality of groups of buckling tower flat web members are arranged between the buckling tower upright columns and the corresponding buckling tower inclined upright columns, the buckling tower inclined web members are arranged between the adjacent buckling tower flat web members, and transverse partition plates are arranged between the buckling tower flat web members;
the lower end of each buckling tower upright post is a buckling tower upright post embedded section, the bottom of each buckling tower upright post embedded section is provided with stiffening rib plates I and upright post steel pipe openings along the periphery in an equal dividing manner, the upright post steel pipe openings are arranged at the buckling tower upright post embedded sections between the adjacent stiffening rib plates I at intervals, and each stiffening rib plate I is welded with the corresponding buckling tower upright post; a plurality of rows of openings are longitudinally formed in each stiffening rib plate I, horizontal anchoring steel bars penetrate through the openings in the stiffening rib plates I and the openings in the upright post steel pipes, the horizontal anchoring steel bars in each layer and a bottom plate I at the lower end of the upright post of the buckling tower are welded into a whole, positioning steel bars are welded at the bottom of the bottom plate I in equal intervals along the circumference, and reinforcing steel bar meshes are embedded in concrete below the bottom plate I;
detain tower upper portion and set up the knot tower anchor district that is used for fixed balance cable, detain tower anchor district including fixing two groups distribution beam and bottom plate II on detaining the tower oblique stand, set up stiffening rib II in bottom plate II, set up at the roof on II surfaces of bottom plate and be used for connecting the roof and correspond the web of detaining the tower oblique stand, distribution beam bottom welding is on the roof.
2. The steel box arch bridge single-arch-rib vertical-rotation construction buckling tower structure as claimed in claim 1, wherein the buckling tower vertical column and the buckling tower inclined column form a buckling tower vertical column which has a variable cross section along the arch rib direction and an equal width surface perpendicular to the arch rib.
3. The steel box arch bridge single-arch-rib vertical-rotation construction tower buckling structure as claimed in claim 1, wherein the tower buckling flat web members and the tower buckling diagonal web members are connected in situ by using upright flanges.
4. The steel box arch bridge single-arch-rib vertical-rotation construction tower buckling structure as claimed in claim 1, wherein a 2 cm-side triangle is cut at the intersection of the welding seams of the stiffening rib plate I and the bottom plate I.
5. The steel box arch bridge single-arch-rib vertical-rotation construction tower buckling structure as claimed in claim 1, wherein the welding position of the stiffening rib plate I and the corresponding tower buckling upright post is staggered by 22.5 degrees from the opening position of the upright post steel pipe.
6. The single arch rib vertical rotation construction buckling tower structure of the steel box arch bridge as claimed in claim 1, wherein the distribution beam is made of double-split steel, and the upper web of the buckling tower inclined upright is stepped.
7. The single-arch-rib vertical-rotation construction tower buckling structure of the steel box arch bridge as claimed in claim 1, wherein a 2 cm-side triangle is cut at the intersection of the stiffening rib plate II and the web welding seam.
8. The steel box arch bridge single-arch-rib vertical-rotation construction tower buckling structure as claimed in claim 1, wherein a section of the tower buckling upright column inserted into the upper rotating disc is a tower buckling upright column embedded section, and a section of the tower buckling inclined upright column inserted into the upper rotating disc is a tower buckling inclined upright column embedded section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020834859.3U CN212404889U (en) | 2020-05-19 | 2020-05-19 | Tower structure is detained in single arch rib of steel case arched bridge vertical rotation construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020834859.3U CN212404889U (en) | 2020-05-19 | 2020-05-19 | Tower structure is detained in single arch rib of steel case arched bridge vertical rotation construction |
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| CN212404889U true CN212404889U (en) | 2021-01-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114059447A (en) * | 2021-11-25 | 2022-02-18 | 四川省公路规划勘察设计研究院有限公司 | Steel pipe concrete bridge tower and construction method thereof |
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2020
- 2020-05-19 CN CN202020834859.3U patent/CN212404889U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114059447A (en) * | 2021-11-25 | 2022-02-18 | 四川省公路规划勘察设计研究院有限公司 | Steel pipe concrete bridge tower and construction method thereof |
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