CN216786852U - Tensioning device for tie arch bridge system conversion - Google Patents
Tensioning device for tie arch bridge system conversion Download PDFInfo
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- CN216786852U CN216786852U CN202123432716.3U CN202123432716U CN216786852U CN 216786852 U CN216786852 U CN 216786852U CN 202123432716 U CN202123432716 U CN 202123432716U CN 216786852 U CN216786852 U CN 216786852U
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Abstract
The utility model discloses a tensioning device for tie arch bridge system conversion, which comprises an upper connecting assembly, a lower connecting assembly and a connecting piece, wherein the upper connecting assembly is connected with the lower connecting assembly through a connecting rod; the upper connecting assembly comprises an upper base, a tie bar connecting plate and a supporting body; the support body is connected to the upper base, the tie bar connecting plate is vertically fixed through the support body, and a first connecting hole is formed in the tie bar connecting plate; the lower connecting assembly comprises a lower base, a plurality of shear nails and a shear resistant plate, wherein the shear nails and the shear resistant plate are arranged on the lower surface of the lower base; the connecting piece includes a plurality of screw rods and nut, and a plurality of screw rod connection are at the upper surface of lower part base, are provided with the second connecting hole that corresponds with the screw rod position on the upper portion base, through nut with upper portion base and lower part base fixed connection. The utility model adopts the fabricated structure, reduces the construction period, has short time and high efficiency due to the fabricated structure, and simultaneously, the lower part structure is not required to be taken out and is left in the concrete, thus not damaging the concrete.
Description
Technical Field
The utility model belongs to the technical field of tied arch bridges, and particularly relates to a tensioning device for system conversion of a tied arch bridge.
Background
The steel box arch bridge has large spanning capability and a spectacular and ambitious appearance, and is an important structural form of a large-span bridge. The tied arch bridge is a combined system bridge, and is formed from tied bar, arch, bridge deck system beam plate and suspension rod which are worked together, and integrates the advantages of arch and beam, and in the aspect of external load bearing, the stress of arch is favourable, and can raise the stability of arch rib, and can raise the structural rigidity of beam and beam, so that the structural characteristics of beam bending and arch compression can be fully developed. The steel box tied arch bridge has the advantages of beautiful modeling, good stress performance, small self-weight of the steel structure, short construction period, small building height and the like. Because the construction can not be carried out by adopting a full-space support cast-in-place mode like a medium bridge or a small bridge, and can not carry out integral prefabrication on large components such as main beams, arch ribs and the like, the construction method of segmental prefabrication and assembly can gradually increase the stress because the segments are gradually lengthened, and the structural line shape becomes more and more complex and is difficult to control. In addition, the mechanical parameters, displacement and the like of the actual construction material are different from the design, and the influence of factors such as segment vertical formwork elevation, measurement, suspender length error, suspender horizontal and vertical bending parameters, environmental change and the like on structural deformation cannot be considered in the design process. Therefore, a series of engineering problems that the arch crown can not be closed, the arch rib and the main beam are twisted linearly, the tie bar is not tensioned and controlled in place and the like often occur in the construction of the large-span arch bridge. The existing support for tensioning the temporary tie bars of the tied arch bridge is inconvenient to mount and cannot effectively resist the action of horizontal force and certain shearing force.
Disclosure of Invention
Aiming at the technical problems, the utility model provides a tensioning device for tie arch bridge system conversion, which aims to solve the problems of inconvenient installation and poor shearing resistance of the conventional tensioning device.
The utility model is realized by adopting the following technical scheme:
a tensioning device for the conversion of a tied arch bridge system comprises an upper connecting assembly, a lower connecting assembly and a connecting piece for connecting the upper connecting assembly and the lower connecting assembly; the upper connecting assembly comprises an upper base, a tie bar connecting plate and a supporting body for supporting the tie bar connecting plate; the support body is connected to the upper base, the tie bar connecting plate is fixed vertically through the support body, and a first connecting hole for connecting a temporary tie bar is formed in the tie bar connecting plate; the lower connecting assembly comprises a lower base, a plurality of shear nails and a shear resistant plate, wherein the shear nails and the shear resistant plate are arranged on the lower surface of the lower base; the connecting piece includes a plurality of screw rods and nut, and a plurality of screw rod connection are at the upper surface of lower part base, be provided with on the upper portion base with the second connecting hole that the screw rod position corresponds, through nut with upper portion base and lower part base fixed connection.
Preferably, the support body comprises two vertical support plates arranged in parallel and an upper horizontal connecting plate and a lower horizontal connecting plate connected between the two vertical support plates, the tie bar connecting plate is fixed on one side of the two vertical support plates, the first connecting hole is located at a position between the two horizontal connecting plates, and the bottom of each vertical support plate is connected with the upper base.
Preferably, the vertical supporting plate is a trapezoidal plate with a small upper part and a large lower part; and one ends of the two horizontal connecting plates, which are far away from the tie bar connecting plate, are provided with inwards concave grooves.
Preferably, the shear resistant plate is arranged at the center of the lower surface of the lower base, and the plurality of shear nails are arranged around the shear resistant plate.
Preferably, the shear resistant plates are a plurality of vertical plates arranged on the lower surface of the lower base, a connecting rib plate is connected between every two adjacent vertical plates, and a shear nail is arranged between every two adjacent vertical plates.
Preferably, the lower base, the shear pin and the screw rod are integrally processed.
Compared with the prior art, the utility model has the beneficial effects that:
compared with the traditional tensioning device, firstly, the device adopts an assembly type structure, can be finished in a factory to avoid unnecessary influence caused by environmental or human factors, and can be directly installed on site to reduce the construction period; secondly, in the disassembly process, due to the assembly type structure, the time is short, the efficiency is high, and meanwhile, the lower part structure is left in the concrete without being taken out, so that the concrete cannot be damaged; finally, due to the addition of the shear plates, the overall shear resistance and stability are improved, so that the tensioning device can be better contacted with concrete, and unnecessary influence caused by easy breakage of the traditional tensioning device can be avoided.
Other advantages of the present invention are described in detail in the detailed description of the utility model.
Drawings
Fig. 1 is a schematic view of the overall structure of a tension device according to an embodiment of the present invention.
Fig. 2 is a front view of a tension device according to an embodiment of the present invention.
Fig. 3 is a left side view of the tension device according to the embodiment of the present invention.
Fig. 4 is a right side view of the tension device according to the embodiment of the present invention.
Fig. 5 is a plan view of a tension device according to an embodiment of the present invention.
Fig. 6 is a schematic view of an upper connection assembly of a tensioning device according to an embodiment of the present invention.
Fig. 7 is a schematic view of a lower connection assembly of a tensioning device according to an embodiment of the present invention.
Fig. 8 is a bottom view of an upper connection assembly of a tensioning device according to an embodiment of the present invention.
Fig. 9 is a schematic view showing a tension device according to an embodiment of the present invention connected to a temporary tie bar.
The various reference numbers in the figures illustrate:
1-upper connection assembly, 2-lower connection assembly, 3-connector, 4-temporary tie bar;
11-upper base, 12-tie bar connection plate, 13-support;
111-a second connection hole; 121-a first connection hole;
131-vertical supporting plates, 132-horizontal connecting plates and 133-strip-shaped plates;
1321-upper horizontal connecting plate, 1322-lower horizontal connecting plate, 1323-groove;
21-a lower base, 22-shear nails, 23-shear plates and 24-connecting rib plates;
31-screw and 32-nut.
Detailed Description
The following description of the present invention is provided for the purpose of illustration, and unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be construed broadly and may include, for example, a fixed connection or a detachable connection or an integral connection; may be a direct connection, an indirect connection, and the like. The specific meaning of the above terms in the present technical solution can be understood by those of ordinary skill in the art according to specific situations.
In the present invention, unless otherwise specified, the terms of orientation such as "upper, lower, bottom, top" are generally defined with reference to the drawing plane of the corresponding drawing, "inner and outer" are defined with reference to the outline of the corresponding drawing, and "front and rear" are defined with reference to the gas flow direction.
The present invention is not limited to the following embodiments, and various specific technical features described in the following embodiments may be combined in any suitable manner without contradiction, as long as they do not depart from the idea of the present invention, and should be considered as the disclosure of the present invention.
The embodiment of the utility model discloses a tensioning device for the conversion of a tied arch bridge system, which comprises an upper connecting assembly 1, a lower connecting assembly 2 and a connecting piece 3, wherein the upper connecting assembly 1 is used for connecting a temporary tie bar 4, the lower connecting assembly 2 is used for connecting a bottom concrete foundation, and the connecting piece 3 is used for connecting the upper connecting assembly 1 and the lower connecting assembly 2, as shown in figure 1.
As shown in fig. 6, the upper connection assembly 1 includes an upper base 11, a tie bar link plate 12, and a support body 13 for supporting the tie bar link plate 12.
The upper base 11 is a horizontal steel plate, and the upper base 11 is provided with a second connection hole 111 for being connected with the lower connection assembly 2 in an assembling manner.
The tie bar connecting plate 12 is a vertical steel plate, and a first connecting hole 121 is formed in the vertical steel plate and used for connecting the temporary tie bar 4, and the vertical steel plate is fixed through a supporting body 13.
The supporting body 13 includes two vertical supporting plates 131, an upper horizontal connecting plate 132 and a lower horizontal connecting plate 132, which are arranged in parallel, the upper horizontal connecting plate 132 and the lower horizontal connecting plate 132 are connected between the two vertical supporting plates 131, the tie bar connecting plate 12 is fixed on one side of the two vertical supporting plates 131, and the first connecting hole 121 on the tie bar connecting plate 12 is located at a position between the two horizontal connecting plates 132. In this way, the lower horizontal connecting plate 1322 can bear the weight of the temporary tie bar 44, and serves to support the temporary tie bar 4, and the upper horizontal connecting plate 1321 mainly stabilizes the two vertical supporting plates 131, so that the upper horizontal connecting plate 1321 is shorter and the lower horizontal connecting plate 1322 is longer, as shown in fig. 5. The bottom of the vertical support plate 131 is connected to the upper base 11.
As a preferable solution of this embodiment, the vertical supporting plate 131 is a trapezoidal plate with a small upper part and a large lower part, and the two horizontal connecting plates 132 are provided with an inwardly recessed groove 1323 at an end far away from the tie rod connecting plate 12, so that the two horizontal connecting plates 132 are integrally in a structure similar to a "pants-shaped" structure. The vertical support plate 131 is arranged to be of a small-top structure, and the horizontal connecting plate 132 is provided with a groove structure, so that the temporary tie bar 4 is convenient to mount, and materials are saved.
Preferably, the cross-sectional area of the bottom of the vertical support plate 131 is set to be larger to increase the contact surface area between the vertical support plate 131 and the upper base 11, specifically, an elongated plate 133 is welded to each of the two sides of the vertical support plate 131, and the length of the elongated plate 133 is slightly greater than that of the vertical support plate 131.
The two vertical support plates 131, the upper and lower horizontal connecting plates 132, and the tie bar connecting plate 12 of the present embodiment are directly fixed by welding. In order to prevent excessive weld deformation, the two vertical support plates 131, the upper and lower horizontal connecting plates 132 are welded together, and then the tie bar connecting plates 12 are welded to the upper base 11. All the welding lines are cut penetration welding, and the friction coefficient of the bottom contact surface of the upper base 11 is not less than 0.3.
As shown in fig. 7 and 8, the lower connection assembly 2 includes a lower base 21, a plurality of shear nails 22 and a shear resistant plate 23, the shear nails 22 and the shear resistant plate 23 are disposed on the lower surface of the lower base 21, and the lower connection assembly 2 is pre-embedded in a concrete foundation, wherein the shear nails 22 and the shear resistant plate 23 increase the contact area between the lower base 21 and the concrete foundation, so as to better bear force.
In this embodiment, the shear resistant plates 23 are a plurality of vertical plates disposed on the lower surface of the lower base, and a connecting rib plate 24 is connected between adjacent vertical plates to increase the stability between the shear resistant plates 23. The shear resistant plate 23 is arranged at the center of the lower surface of the lower base 21, the shear nails 22 are arranged around the shear resistant plate 23, and the shear nails 22 are also arranged between the adjacent vertical plates. As shown in fig. 8.
The lower base 21 and the shear resistant plate 23 of the present embodiment are fixed by welding, and during welding, the shear resistant plate 23 and the connecting rib plate 24 are welded into a whole, and then welded to the lower base 21. All welding lines are cut penetration welding, and the friction coefficient of the bottom contact surface of the lower base 21, the shear resistant plate 23 and the connecting rib plate 24 with concrete is not less than 0.3.
The connecting piece 3 comprises a plurality of screws 31 and nuts 32, the plurality of screws 31 are connected on the upper surface of the lower base 21, the positions of the second connecting holes 111 on the upper base 11 are matched with the positions of the screws 31, the diameter of the second connecting holes 111 is matched with the diameter of the screws 31, and the upper base 11 is fixedly connected with the lower base 21 through the nuts 32. And a gasket is arranged at the position of the nut 32, so that the connection stability is improved.
The lower base 21 of the present embodiment is integrally processed with the shear pin 22 and the screw 31; of course, a plurality of holes may be formed in the lower base 21 for the shear pins 22 to pass through, and then the holes of the lower base 21 are welded to the shear pins 22, wherein the portion of the shear pins 22 exposed on the upper surface of the lower base 21 forms the screw 31 in the connecting member 3; alternatively, the shear pins 22 and the screws 31 are welded to the upper and lower surfaces of the lower base 21, respectively, but an integral process is preferable.
Claims (6)
1. A tensioning device for the conversion of a tied arch bridge system is characterized by comprising an upper connecting assembly (1), a lower connecting assembly (2) and a connecting piece (3) for connecting the upper connecting assembly (1) and the lower connecting assembly (2);
the upper connecting assembly (1) comprises an upper base (11), a tie rod connecting plate (12) and a supporting body (13) for supporting the tie rod connecting plate (12); the support body (13) is connected to the upper base (11), the tie bar connecting plate (12) is vertically fixed through the support body (13), and a first connecting hole (121) for connecting the temporary tie bar (4) is formed in the tie bar connecting plate (12);
the lower connecting component (2) comprises a lower base (21), a plurality of shear nails (22) and a shear resistant plate (23), wherein the shear nails (22) and the shear resistant plate (23) are arranged on the lower surface of the lower base (21);
connecting piece (3) include a plurality of screw rods (31) and nut (32), and the upper surface at lower part base (21) is connected in a plurality of screw rods (31), be provided with on upper portion base (11) with screw rod (31) position corresponds second connecting hole (111), through nut (32) with upper portion base (11) and lower part base (21) fixed connection.
2. A tensioning device for the conversion of a tied arch bridge system according to claim 1, characterized in that said supporting body (13) comprises two vertical supporting plates (131) arranged in parallel, two upper and lower horizontal connecting plates (132) connected between the two vertical supporting plates (131), said tie rod connecting plate (12) is fixed on one side of the two vertical supporting plates (131), said first connecting hole (121) is located at a position between the two horizontal connecting plates (132), and the bottom of said vertical supporting plate (131) is connected with the upper base (11).
3. A tensioning device for the conversion of a tied arch bridge system according to claim 2, characterized in that the vertical support plate (131) is a trapezoidal plate with a small upper part and a large lower part; one ends of the two horizontal connecting plates (132) far away from the tie bar connecting plate (12) are provided with inwards concave grooves (1323).
4. A tensioning device for conversion of a tied arch bridge system according to claim 1, characterized in that the shear-resistant plate (23) is arranged in a central position on the lower surface of the lower base (21), and the plurality of shear nails (22) are arranged around the periphery of the shear-resistant plate (23).
5. A tensioning device for the conversion of a tied arch bridge system according to claim 1, characterized in that the shear-resistant plates (23) are a plurality of vertical plates arranged on the lower surface of the lower foundation, connecting ribs (24) are connected between adjacent vertical plates, and shear nails (22) are arranged between adjacent vertical plates.
6. A tensioning device for conversion of a tied arch bridge system according to claim 1, characterized in that the lower base (21) is integrally machined with the shear nails (22) and the threaded rods (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123432716.3U CN216786852U (en) | 2021-12-31 | 2021-12-31 | Tensioning device for tie arch bridge system conversion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123432716.3U CN216786852U (en) | 2021-12-31 | 2021-12-31 | Tensioning device for tie arch bridge system conversion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216786852U true CN216786852U (en) | 2022-06-21 |
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ID=82011038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123432716.3U Active CN216786852U (en) | 2021-12-31 | 2021-12-31 | Tensioning device for tie arch bridge system conversion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216786852U (en) |
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2021
- 2021-12-31 CN CN202123432716.3U patent/CN216786852U/en active Active
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