CN216663769U - Structure for steel bar passing through main beam of cable-stayed bridge of leaning tower - Google Patents
Structure for steel bar passing through main beam of cable-stayed bridge of leaning tower Download PDFInfo
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- CN216663769U CN216663769U CN202220067399.5U CN202220067399U CN216663769U CN 216663769 U CN216663769 U CN 216663769U CN 202220067399 U CN202220067399 U CN 202220067399U CN 216663769 U CN216663769 U CN 216663769U
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Abstract
The utility model discloses a structure of a steel bar passing through a main beam of a leaning tower cable-stayed bridge, relating to the technical field of leaning tower cable-stayed bridges and comprising the following steps: the main beam is provided with a through hole; the main tower back support comprises an upper section back support steel pipe and a lower section back support steel pipe, and the upper section back support steel pipe and the lower section back support steel pipe are respectively positioned at the upper end and the lower end of the through hole; the rod iron body, the rod iron body is a plurality of, and a plurality of rod iron body is fixed in and runs through the through-hole, and the upper end and the upper segment of rod iron body support the steel pipe dorsad and be connected, and the lower extreme and the hypomere of rod iron body support the steel pipe dorsad and be connected, and the concrete has been pour between the outer wall of rod iron body and the inner wall that runs through the through-hole, and the diameter of rod iron body is 70 mm. According to the utility model, the steel bar body with a smaller diameter is connected with the main beam, so that the direct contact between the main tower back support steel pipe and the main beam is avoided, and the influence of the main tower back support steel pipe on the main beam can be effectively avoided.
Description
Technical Field
The utility model relates to the technical field of leaning tower cable-stayed bridges, in particular to a structure that a steel bar penetrates through a main beam of a leaning tower cable-stayed bridge.
Background
Along with the rapid development of bridge construction, people pursue the appearance of the bridge more and more highly, the bridge with artistic sense can be more approved and squinted by people, a bridge engineer designs the leaning tower cable-stayed bridge, the characteristics of lightness and smooth lines of the common cable-stayed bridge body are inherited, and the leaning tower brings asymmetric aesthetic feeling and strong visual impact force for people. However, the construction difficulty of the bridge is higher and higher, and the structure is easy to cause overlarge bending moment at the root of the bridge tower and concrete cracks at the root of the bridge tower in the construction process due to the inclination of the bridge tower.
At present, in order to solve the safety problem of the bridge tower in construction caused by the inclination of the main tower, a main tower back support can be erected in the construction process of the bridge tower, an upper supporting point of the main tower back support is connected with the bridge tower, and a lower supporting point of the main tower back support is connected with the ground. The main tower back support is mainly composed of steel pipes with large diameters, the main tower back support steel pipes need to penetrate through a main beam body, the bearing capacity of the main beam is weakened and stress is concentrated when the main beam body penetrates through the main beam body, and the tension of the main beam prestress steel beams can be influenced by overlarge holes.
Therefore, a new connecting structure for the main beam and the main tower to be supported back to back is urgently needed in the market for solving the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a structure for enabling a steel bar to penetrate through a main beam of a cable-stayed bridge of an inclined tower, which is used for solving the technical problems in the prior art.
In order to achieve the purpose, the utility model provides the following scheme:
the utility model discloses a structure of a main beam of a cable-stayed bridge with a steel bar passing through an inclined tower, which comprises:
the main beam is provided with a through hole;
the main tower back support comprises an upper section back support steel pipe and a lower section back support steel pipe, and the upper section back support steel pipe and the lower section back support steel pipe are respectively positioned at the upper end and the lower end of the through hole;
the steel bar body, the steel bar body is a plurality of, a plurality of the steel bar body is fixed in it is downthehole to run through, the upper end of steel bar body with the upper segment supports the steel pipe dorsad and is connected, the lower extreme of steel bar body with the hypomere supports the steel pipe dorsad and is connected, the outer wall of steel bar body with concrete has been pour between the inner wall that runs through the through-hole, the diameter of steel bar body is 70 mm.
Preferably, an upper section sealing plate is fixed at the lower end of the upper section back to the support steel pipe, and the thickness of the upper section sealing plate is 20 mm;
and a lower section sealing plate is fixed at the upper end of the lower section, which is back to the support steel pipe, and the thickness of the lower section sealing plate is 20 mm.
Preferably, an upper fixing plate is fixed at the upper end of the steel bar body, and the thickness of the upper fixing plate is 34 mm;
the lower end of the steel bar body is fixed with a lower section fixing plate, and the thickness of the lower section fixing plate is 34 mm.
Preferably, a plurality of upper-section first stiffening plates are fixed between the upper-section sealing plate and the upper-section fixing plate, and concrete is poured between the upper-section sealing plate and the upper-section fixing plate;
a plurality of lower section first stiffening plates are fixed between the lower section sealing plate and the lower section fixing plate, and concrete is poured between the lower section sealing plate and the lower section fixing plate.
Preferably, the thickness of the upper first stiffening plate and the thickness of the lower first stiffening plate are both 10 mm.
Preferably, a plurality of upper-section second stiffening plates are fixed on the outer wall of the upper end of the steel bar body;
and a plurality of lower section second stiffening plates are fixed on the outer wall of the lower end of the steel bar body.
Preferably, the thickness of the upper second stiffening plate and the thickness of the lower second stiffening plate are both 10 mm.
Compared with the prior art, the utility model has the following technical effects:
(1) the steel bar body has high bearing capacity, and the bearing capacity of the main tower in the back direction can be effectively guaranteed;
(2) the main tower back support steel pipe is not directly contacted with the main beam and is separated from the main beam, so that the complex stress between the main beam and the main tower back support steel pipe is avoided;
(3) when the steel bar body penetrates through the main beam, the hole is small, the construction of the main beam and the tensioning of the prestressed steel beam are basically not influenced, and the construction is convenient;
(4) the maintenance and later-period dismantling are convenient;
(5) the used materials are conventional section steel and steel plates, special processing is not needed, and the manufacturing cost is low.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of a main beam structure of a cable-stayed bridge with a steel bar penetrating through an inclined tower according to an embodiment of the utility model;
FIG. 2 is a connection relationship diagram of steel bar bodies in a structure in which concrete-filled steel tubes pass through a main beam of a cable-stayed bridge of a leaning tower according to an embodiment of the utility model;
in the figure: 1-a main beam; 21-the upper section supports the steel pipe in a back direction; 22-lower section back supporting steel tube; 31-upper section closing plate; 32-lower section closing plate; 41-an upper first stiffening plate; 42-lower section first stiffening plate; 51-upper fixing plate; 52-lower section fixed plate; 61-an upper second stiffening plate; 62-lower section second stiffening plate; 7-steel bar body.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model aims to provide a structure for enabling a steel bar to penetrate through a main beam of a cable-stayed bridge of an inclined tower, which is used for solving the technical problems in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1-2, the present embodiment provides a structure in which a steel bar passes through a main girder of a cable-stayed leaning tower bridge, including:
the main beam 1 is a bridge of a cable-stayed bridge, and the main beam 1 is provided with a through hole, namely a hole for a main tower to pass through back-to-back support steel pipe originally;
the main tower back support comprises an upper section back support steel pipe 21 and a lower section back support steel pipe 22, and can be understood as cutting off the original back support steel pipe from the middle to ensure that the original back support steel pipe does not penetrate through the main beam 1, wherein the upper section back support steel pipe 21 and the lower section back support steel pipe 22 are respectively positioned at the upper end and the lower end of the through hole;
the rod iron body 7 is common rod iron, and rod iron body 7 is a plurality of, as for the concrete quantity of rod iron body 7, can select according to the atress condition of actual girder 1, and a plurality of rod iron body 7 is fixed in and runs through in the hole, and a plurality of rod iron body 7 is parallel to each other, vertical distribution. The upper end and the upper segment of rod iron body 7 support the steel pipe 21 dorsad and be connected, and the lower extreme and the hypomere of rod iron body 7 support the steel pipe 22 dorsad and be connected, and the concrete has been pour between the outer wall of rod iron body 7 and the inner wall that runs through the through-hole, and the diameter of rod iron body 7 is 70mm, and the rod iron body 7 of other diameters can also be chooseed for use according to actual need to the technical staff in the field.
During the use, got rid of the steel pipe that supports dorsad, connect with rod iron body 7 in through hole department change to produced negative effects when avoiding the steel pipe that supports dorsad and being connected with girder 1.
In this embodiment, an upper sealing plate 31 is fixed at the lower end of the upper section back to the support steel pipe 21, the upper sealing plate 31 is used for sealing the opening of the upper section back to the support steel pipe 21, so that the upper section back to the support steel pipe 21 is convenient to connect, and the upper sealing plate 31 has a thickness of 20mm and a diameter of 300 mm;
the upper end of the lower section back of the body supporting steel pipe 22 is fixed with a lower section shrouding 32, and similarly, the effect of the lower section shrouding 32 is to seal the opening of the lower section back of the body supporting steel pipe 22, so that it is convenient to connect, and the thickness of the lower section shrouding 32 is 20mm, and the diameter is 300mm, and the technical personnel in the art can adjust the concrete size of the upper section shrouding 31 and the lower section shrouding 32 as required.
In this embodiment, the upper end of the steel bar body 7 is fixed with an upper fixing plate 51, the upper ends of the plurality of steel bar bodies 7 are connected with the same upper fixing plate 51, and the thickness of the upper fixing plate 51 is 34 mm;
the lower end of the steel bar body 7 is fixed with a lower section fixing plate 52, the lower ends of the steel bar bodies 7 are connected with the same lower section fixing plate 52, the thickness of the lower section fixing plate 52 is 34mm, and the specific thicknesses of the upper section fixing plate 51 and the lower section fixing plate 52 can be adjusted by a person skilled in the art according to actual needs.
In this embodiment, a plurality of upper-section first stiffening plates 41 are fixed between the upper-section sealing plate 31 and the upper-section fixing plate 51, concrete is poured between the upper-section sealing plate 31 and the upper-section fixing plate 51, and the plurality of upper-section first stiffening plates 41 are firmly fixed by the concrete, so that the strength of the whole body is enhanced, and the strength of the concrete is C40;
a plurality of lower section first stiffening plates 42 are fixed between the lower section sealing plate 32 and the lower section fixing plate 52, concrete is poured between the lower section sealing plate 32 and the lower section fixing plate 52, the lower section first stiffening plates 42 are firmly fixed through the concrete, so that the overall strength is enhanced, and the concrete strength is C40.
In the present embodiment, the upper first stiffener 41 and the lower first stiffener 42 have a thickness of 10mm, a length of 150mm, and a width of 100 mm. The specific dimensions of the upper first stiffener 41 and the lower first stiffener 42 may be adjusted by those skilled in the art according to actual needs.
In this embodiment, a plurality of upper-section second stiffening plates 61 are fixed on the outer wall of the upper end of the steel rod body 7, as shown in fig. 2, the second stiffening plates are in a right-angled trapezoid structure, and are fixed to the steel rod body 7 at one side and the upper-section fixing plate 51 at the other side, and four upper-section second stiffening plates 61 are specifically arranged at the upper end of one steel rod body 7 and are uniformly distributed along the circumferential direction;
similarly, a plurality of lower second stiffening plates 62 are fixed on the outer wall of the lower end of the steel bar body 7, and the shapes and the number of the lower second stiffening plates are the same as those of the upper second stiffening plates 61 and are symmetrically distributed with the upper second stiffening plates.
In the present embodiment, the thickness of each of the upper second stiffener plate 61 and the lower second stiffener plate 62 is 10mm, and the length thereof is 150mm and the width thereof is 100 mm. The specific dimensions of the upper second stiffening plate 61 and the lower second stiffening plate 62 may be adjusted by those skilled in the art according to actual needs.
The whole manufacturing process is as follows:
(1) measuring lofting, wherein the positions of the column foot points (namely the upper end and the lower end of the steel bar body 7) of the steel bar body 7 are required to be aligned with the positions of the upper section fixing plate 51 and the lower section fixing plate 52, and the positions of the column foot points (the upper end and the lower end) of the steel bar body 7, which are back to the top opening of the supporting steel pipe, are measured before the upper section fixing plate 51 is uncovered;
(2) reinforcing the pipe wall of the back-supported steel pipe by using an upper section second stiffening plate 61 and a lower section second stiffening plate 62 at the corresponding position of the base point of the 7-column of the steel bar body, wherein the upper section second stiffening plate 61 and the lower section second stiffening plate 62 are subjected to double-sided welding;
(3) the back support steel pipe is cut off when meeting the main beam 1 and is connected by a steel bar body 7 with a small diameter, the joint steel pipe at the cut-off part is locally reinforced through the upper section first stiffening plate 41, the upper section sealing plate 31, the lower section first stiffening plate 42 and the lower section sealing plate 32, and concrete is filled at the joint of the steel pipe.
(4) Installing the small-diameter steel bar body 7, releasing the position of each steel bar body 7 column base on the upper section fixing plate 51 and the lower section fixing plate 52 by using a total station according to a design drawing, installing the steel bar body 7 at a specified position, and fixing by welding. An upper second stiffening plate 61 or a lower second stiffening plate 62 is arranged between each steel bar body 7 and the upper fixing plate 51 or the lower fixing plate 52 for enhancing rigidity and stability.
(5) And (4) processing reserved holes, namely roughening the holes left by the steel bar bodies 7 penetrating through the main beam 1, supporting and hanging the mold after the surfaces are rough, and filling and compacting by adopting concrete.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the utility model.
Claims (7)
1. The utility model provides a structure that leaning tower cable-stay bridge girder is passed to rod iron which characterized in that includes:
the main beam is provided with a through hole;
the main tower back support comprises an upper section back support steel pipe and a lower section back support steel pipe, and the upper section back support steel pipe and the lower section back support steel pipe are respectively positioned at the upper end and the lower end of the through hole;
the steel bar body, the steel bar body is a plurality of, a plurality of the steel bar body is fixed in it is downthehole to run through, the upper end of steel bar body with the upper segment supports the steel pipe dorsad and is connected, the lower extreme of steel bar body with the hypomere supports the steel pipe dorsad and is connected, the outer wall of steel bar body with concrete has been pour between the inner wall that runs through the through-hole, the diameter of steel bar body is 70 mm.
2. The structure that the steel bar passes through the main girder of the inclined tower cable-stayed bridge according to claim 1, which is characterized in that: an upper section sealing plate is fixed at the lower end of the upper section back to the support steel pipe, and the thickness of the upper section sealing plate is 20 mm;
and a lower section sealing plate is fixed at the upper end of the lower section, which is back to the support steel pipe, and the thickness of the lower section sealing plate is 20 mm.
3. The structure that the steel bar passes through leaning tower cable-stayed bridge girder according to claim 2, characterized in that: an upper section fixing plate is fixed at the upper end of the steel bar body, and the thickness of the upper section fixing plate is 34 mm;
and a lower section fixing plate is fixed at the lower end of the steel bar body, and the thickness of the lower section fixing plate is 34 mm.
4. The structure of the steel bar passing through the main girder of the inclined tower cable-stayed bridge according to claim 3, characterized in that: a plurality of upper section first stiffening plates are fixed between the upper section sealing plate and the upper section fixing plate, and concrete is poured between the upper section sealing plate and the upper section fixing plate;
a plurality of lower section first stiffening plates are fixed between the lower section sealing plate and the lower section fixing plate, and concrete is poured between the lower section sealing plate and the lower section fixing plate.
5. The structure of the steel bar passing through the main beam of the inclined tower cable-stayed bridge according to claim 4, characterized in that: the thickness of the upper section first stiffening plate and the thickness of the lower section first stiffening plate are both 10 mm.
6. The structure of the steel bar passing through the main girder of the inclined tower cable-stayed bridge according to claim 3, characterized in that: a plurality of upper-section second stiffening plates are fixed on the outer wall of the upper end of the steel bar body;
and a plurality of lower section second stiffening plates are fixed on the outer wall of the lower end of the steel bar body.
7. The structure that the steel bar passes through leaning tower cable-stayed bridge girder according to claim 6, characterized in that: the thickness of the upper section second stiffening plate and the thickness of the lower section second stiffening plate are both 10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220067399.5U CN216663769U (en) | 2022-01-12 | 2022-01-12 | Structure for steel bar passing through main beam of cable-stayed bridge of leaning tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220067399.5U CN216663769U (en) | 2022-01-12 | 2022-01-12 | Structure for steel bar passing through main beam of cable-stayed bridge of leaning tower |
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| Publication Number | Publication Date |
|---|---|
| CN216663769U true CN216663769U (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220067399.5U Active CN216663769U (en) | 2022-01-12 | 2022-01-12 | Structure for steel bar passing through main beam of cable-stayed bridge of leaning tower |
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| CN (1) | CN216663769U (en) |
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- 2022-01-12 CN CN202220067399.5U patent/CN216663769U/en active Active
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