Prestress tension conversion device and mounting and using method thereof

Abstract

The invention belongs to the technical field of bridge construction, and discloses a prestress tension conversion device and a mounting and using method thereof. The prestress tension conversion device comprises conversion connecting beams and tension connecting pieces, and at least one conversion connecting beam is arranged and located between the two cable bent towers. A plurality of tensioning connecting pieces are arranged on the two opposite sides, in the width direction of the conversion connecting beam, of the tensioning connecting pieces at intervals, the multiple tensioning connecting pieces on the two sides are symmetrically distributed along the central axis of the conversion connecting beam, and the tensioning connecting pieces are detachably connected with the conversion connecting beam. The ends, away from the conversion connecting beams, of the tensioning connecting pieces are arranged on the cable bent towers in a penetrating mode. When the prestress tensioning conversion device is used for prestress construction, the tensioning connecting piece can avoid an existing structure, the situation that the existing structure hinders arrangement of the tensioning connecting piece is avoided, the tensioning position of the prestress connecting piece is flexibly adjusted, and it is guaranteed that the tensioning work of the tensioning connecting piece is smoothly conducted.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to a prestressed tensioning conversion device and an installation and use method thereof. Background Art

[0002] Cable towers play a vital role in bridges. They are one of the main load-bearing components in bridge structures. Cable towers mainly play a supporting role in bridges, and can transfer the tension of the inclined cables (or main cables) to the foundation, thereby maintaining the overall stability and safety of the bridge structure.

[0003] In the construction of bridges, steel strands are usually set between two cable towers, and tensile stress is applied to the steel strands, so that the cable towers generate a certain reaction force before bearing external loads. When the cable towers are acted upon by external forces, the reaction force can offset part or all of the external forces, thereby improving the bearing capacity, rigidity and crack resistance of the cable towers. In the prior art, when steel strands are set on cable towers, the steel strands on both sides of the cable towers need to be arranged symmetrically before tensioning. However, during bridge construction, it is usually necessary to pre-buried pipelines, and some pipelines will extend out of the bridge deck, thereby hindering the setting of the steel strands, making it impossible to symmetrically arrange the steel strands on both sides, and thus impossible to tension the steel strands and apply prestress, affecting bridge construction. Summary of the invention

[0004] The object of the present invention is to provide a prestressed tensioning conversion device and an installation and use method thereof, which can enable the tensioning connector to avoid the existing structure, prevent the existing structure from hindering the arrangement of the tensioning connector, flexibly adjust the tensioning position of the prestressed connector, and ensure that the tensioning work of the tensioning connector is carried out smoothly.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] In a first aspect, a prestressed tension conversion device is provided, comprising:

[0007] A conversion connecting beam, at least one of which is provided, wherein the conversion connecting beam is configured to be arranged between two cable towers;

[0008] A tensioning connection member, wherein a plurality of the tensioning connections are arranged at intervals on opposite sides along the width direction of the conversion connection beam, and the plurality of the tensioning connections on both sides are symmetrically distributed along the central axis of the conversion connection beam, the tensioning connection member is detachably connected to the conversion connection beam, and one end of the tensioning connection member away from the conversion connection beam is configured to be passed through the cable tower.

[0009] Optionally, the prestressed tension conversion device also includes an anchor clamp, the conversion connecting beam is provided with a through hole one along the width direction, the tension connecting piece passes through the through hole one and is clamped to the anchor clamp, and the anchor clamp is pressed against the side wall of the conversion connecting beam.

[0010] Optionally, the anchor clamp includes an anchor plate and a plurality of clips, the anchor plate is provided with a second through hole, the tension connection piece passes through the second through hole, the plurality of clips are circumferentially arranged on the tension connection piece, and the plurality of clips are clamped in the second through hole, so that the anchor plate clamps the tension connection piece through the clips, and the anchor plate is pressed against the side wall of the conversion connecting beam.

[0011] Optionally, the conversion connecting beam includes a beam body and a buffer pad, the buffer pad is arranged on the side wall of the beam body, the beam body is provided with a first hole segment, the buffer pad is provided with a second hole segment, the first hole segment is directly opposite to the second hole segment to be connected to form the through hole 1, the tensioning connecting member passes through the first hole segment and the second hole segment, and is clamped to the anchor clamp, and the anchor clamp is tightly pressed against the buffer pad.

[0012] Optionally, the prestressed tension conversion device further comprises a sealing member, wherein the sealing member is sandwiched between the tension connection member and the conversion connection beam and is located on a side of the conversion connection beam away from the anchoring clamp.

[0013] Optionally, the prestressed tension conversion device includes a plurality of the conversion connecting beams, and the plurality of the conversion connecting beams are arranged at intervals between two of the cable towers. A plurality of the tension connectors are arranged at intervals along the extension direction of the conversion connecting beams between two adjacent conversion connecting beams and between the conversion connecting beam and the cable tower, and the plurality of the tension connectors are symmetrically distributed along the central axis of the conversion connecting beam.

[0014] Optionally, the tension connection comprises steel strands.

[0015] In a second aspect, a method for installing and using a prestressed tensioning conversion device is provided, using the prestressed tensioning conversion device as described above, the method for installing and using the prestressed tensioning conversion device comprising the following steps:

[0016] Lifting the conversion connecting beam to the location to be installed, and determining the layout position of the tensioning connecting member according to the construction situation;

[0017] The plurality of tension connectors are arranged at intervals on two opposite sides of the conversion connection beam, and the plurality of tension connectors on two opposite sides of the conversion connection beam are symmetrically distributed along the central axis of the conversion connection beam, and one end of the plurality of tension connectors is connected to the conversion connection beam, and the other end is passed through the cable tower;

[0018] The tensioning connectors on both sides of the conversion connecting beam are tensioned in opposite directions to generate prestress in the tensioning connectors.

[0019] Beneficial effects of the present invention:

[0020] The present invention provides a prestressed tension conversion device and an installation and use method thereof, wherein the prestressed tension conversion device comprises a conversion connection beam and a tension connection piece. When the cable tower of a bridge is constructed using prestressed technology, the conversion connection beam is first hoisted to a position to be installed, and then the layout position of the tension connection piece is determined according to the construction situation, and a plurality of tension connections are arranged at intervals on opposite sides of the conversion connection beam, and the plurality of tension connections on both sides of the conversion connection beam are symmetrically distributed along the central axis of the conversion connection beam, and then one end of the tension connection piece is connected to the conversion connection beam, and the other end is passed through the cable tower, and finally the tension connections on both sides of the conversion connection beam are tensioned in opposite directions, that is, tension is applied to the tension connection piece, so that prestress is generated on the tension connection piece. By arranging multiple tensioning connectors at intervals on opposite sides of the transfer connecting beam, the tensioning connectors can avoid existing structures, preventing the existing structures from hindering the arrangement of the tensioning connectors, and flexibly adjusting the tensioning position of the prestressed connectors. The multiple tensioning connectors on both sides of the transfer connecting beam are distributed symmetrically around the center, so that the forces on both sides of the transfer connecting beam can be balanced, thereby enabling the tensioning work of the tensioning connectors to proceed smoothly, thereby ensuring the normal construction of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a prestressed tension conversion device provided in Embodiment 1 of the present invention;

[0022] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0023] Figure 3 It is a structural schematic diagram of the prestressed tension conversion device provided in the second embodiment of the present invention.

[0024] In the figure:

[0025] 100. Tower;

[0026] 1. Conversion connecting beam; 11. Beam body; 12. Buffer pad;

[0027] 2. Tension connector;

[0028] 3. Anchor clamp. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0033] Embodiment 1

[0034] This embodiment provides a prestressed tension conversion device, such as Figure 1 and Figure 2 As shown, the existing structure can be avoided to prevent the existing structure from hindering the arrangement of the tensioning connector 2, and the tensioning position of the prestressed connector can be flexibly adjusted to ensure that the tensioning work of the tensioning connector 2 proceeds smoothly.

[0035] like Figure 1 and Figure 2As shown, the prestressed tension conversion device includes a conversion connection beam 1 and a tension connection member 2. Among them, at least one conversion connection beam 1 is provided, and the conversion connection beam 1 is configured to be arranged between two cable towers 100. A plurality of tension connections 2 are arranged at intervals on opposite sides of the tension connection member 2 along the width direction of the conversion connection beam 1, and the plurality of tension connections 2 on both sides are symmetrically distributed along the central axis of the conversion connection beam 1. The tension connection member 2 is detachably connected to the conversion connection beam 1, and the end of the tension connection member 2 away from the conversion connection beam 1 is configured to be passed through the cable tower 100.

[0036] When the prestressed technology is used to construct the cable tower 100 of the bridge, the conversion connecting beam 1 is first hoisted to the installation position, and then the layout position of the tensioning connector 2 is determined according to the construction situation, and multiple tensioning connectors 2 are spaced apart on the opposite sides of the conversion connecting beam 1, and the multiple tensioning connectors 2 on both sides of the conversion connecting beam 1 are symmetrically distributed along the central axis of the conversion connecting beam 1, and then one end of the tensioning connector 2 is connected to the conversion connecting beam 1, and the other end is passed through the cable tower 100, and finally the tensioning connectors 2 on both sides of the conversion connecting beam 1 are tensioned in opposite directions, that is, tension is applied to the tensioning connector 2, so that prestress is generated on the tensioning connector 2.

[0037] By arranging multiple tensioning connectors 2 at intervals on opposite sides of the conversion connection beam 1, the tensioning connector 2 can avoid the existing structure to prevent the existing structure from hindering the arrangement of the tensioning connector 2, and the tensioning position of the prestressed connector can be flexibly adjusted. The multiple tensioning connectors 2 on both sides of the conversion connection beam 1 are distributed symmetrically around the center, so that the forces on both sides of the conversion connection beam 1 can be balanced, so that the tensioning work of the tensioning connector 2 can proceed smoothly, thereby ensuring the normal construction of the bridge.

[0038] In this embodiment, one conversion connection beam 1 is provided, and two tension connectors 2 are provided on each side of the conversion connection beam 1. When prestress is applied to the tension connector 2, the same tension needs to be applied to multiple tension connectors 2 on both sides of the conversion connection beam 1 at the same time. In other embodiments, more than two tension connectors 2 may be provided on each side of the conversion connection beam 1 according to actual needs, which is not limited here.

[0039] It should be noted that when tension is applied to the tension connector 2, the end of the tension connector 2 close to the cable tower 100 can be pulled, and the end of the tension connector 2 close to the conversion connecting beam 1 can be pulled, but the pulling positions of the tension connector 2 on both sides of the conversion connecting beam 1 must be the same.

[0040] Alternatively, if Figure 1 and Figure 2As shown, the prestressed tension conversion device also includes an anchoring clamp 3. The conversion connection beam 1 is provided with a through hole 1 along the width direction. When connecting the tension connector 2 and the conversion connection beam 1, the tension connector 2 is passed through the through hole 1, and then the protruding tension connector 2 is clamped with the anchoring clamp 3, and the tension connector 2 is tensioned, so that the anchoring clamp 3 is pressed against the side wall of the conversion connection beam 1, thereby realizing the connection between the tension connector 2 and the conversion connection beam 1. The structure is simple and the operation is convenient. When disassembly is required, the tension connector 2 can be pulled out of the conversion connection beam 1 by simply releasing the clamping force of the anchoring clamp 3 on the tension connector 2.

[0041] Optionally, the anchoring clamp 3 includes an anchoring plate and a plurality of clips. The anchoring plate is provided with a through hole 2, and the tension connector 2 passes through the through hole 2. A plurality of clips are circumferentially arranged on the tension connector 2, and a plurality of clips are clamped in the through hole 2, so that the anchoring plate clamps the tension connector 2 through the clips. The anchoring plate is pressed against the side wall of the conversion connecting beam 1. When the anchoring clamp 3 is used to clamp the tension connector 2, the tension connector 2 is passed through the through hole 2, and then a plurality of clips are arranged around the tension connector 2, and the plurality of clips are moved along the tension connector 2 so that the plurality of clips are inserted into the through hole 2 until the clip is clamped in the through hole 2. At this time, the outer wall of the through hole 2 is pressed against the outer wall of the clip, so that the clip can clamp the outside of the tension connector 2, thereby realizing that the anchoring plate clamps the tension connector 2 through the clip, and the structure is simple and easy to operate.

[0042] like Figure 1 and Figure 2 As shown, the conversion connecting beam 1 includes a beam body 11 and a buffer pad 12, and the buffer pad 12 is arranged on the side wall of the beam body 11. The beam body 11 is provided with a first hole section, and the buffer pad 12 is provided with a second hole section. The first hole section is directly opposite to the second hole section to form a through hole 1. The tensioning connector 2 passes through the first hole section and the second hole section, and is clamped to the anchoring fixture 3. The anchoring fixture 3 is tightly pressed against the buffer pad 12. When connecting the tension connector 2 and the conversion connecting beam 1, the tension connector 2 is passed through the first hole section and the second hole section in sequence, and the anchor clamp 3 is clamped on the protruding end of the tension connector 2, and then the anchor clamp 3 is pressed against the buffer block 12, that is, the anchor clamp 3 is pressed against the beam body 11 through the buffer block 12. By providing the buffer block 12, the contact area between the anchor clamp 3 and the beam body 11 can be increased, so that the pressing force between the anchor clamp 3 and the beam body 11 can be evenly distributed, avoiding stress concentration and damage to the beam body 11, and ensuring the connection stability between the tension connector 2 and the conversion connecting beam 1.

[0043] Exemplarily, the buffer pad 12 includes a rectangular steel plate box formed by welding a plurality of steel plates.

[0044] Optionally, the prestressed tension conversion device further includes a seal. The seal is sandwiched between the tension connector 2 and the conversion connection beam 1, and is located on the side of the conversion connection beam 1 away from the anchoring fixture 3. By providing the seal, direct hard contact between the tension connector 2 and the hole wall of the through hole 1 can be avoided, thereby avoiding wear between the two and preventing the prestress on the tension connector 2 from being damaged.

[0045] Exemplarily, the tension connection 2 comprises steel strands.

[0046] Embodiment 2

[0047] Based on the same inventive concept as the first embodiment, this embodiment provides a prestressed tension conversion device. Figure 3 As shown, the stress tension conversion device includes a plurality of conversion connection beams 1. The plurality of conversion connection beams 1 are arranged at intervals between two cable towers 100. A plurality of tension connectors 2 are arranged at intervals along the extension direction of the conversion connection beams 1 between two adjacent conversion connection beams 1 and between the conversion connection beams 1 and the cable towers 100, and the plurality of tension connectors 2 are symmetrically distributed along the central axis of the conversion connection beams 1. When the prestressed tension conversion device is required, the number of conversion connection beams 1 required can be determined according to the actual construction situation, and the conversion connection beams 1 and the tension connectors 2 can be installed and connected.

[0048] It should be noted that when tension is applied to the tension connector 2, the tension connector 2 between two adjacent conversion connection beams 1 can be tensioned in opposite directions, or the tension connector 2 between the conversion connection beam 1 and the cable tower 100 can be tensioned in opposite directions, which is not limited here.

[0049] In this embodiment, two conversion connection beams 1 are provided, and two tension connection members 2 are provided between the two conversion connection beams 1 and between the conversion connection beam 1 and the cable tower 100. In other embodiments, more than two conversion connection beams 1 may be provided according to actual needs, and more than two tension connection members 2 may be provided between the two conversion connection beams 1 and between the conversion connection beam 1 and the cable tower 100, which is not limited here.

[0050] Embodiment 3

[0051] This embodiment provides a method for installing and using a prestressed tension conversion device, using the prestressed tension conversion device as described above. The method for installing and using the prestressed tension conversion device includes the following steps:

[0052] Lift the conversion connection beam 1 to the installation position, determine the layout position of the tension connector 2 according to the construction situation; arrange multiple tension connectors 2 at intervals on the opposite sides of the conversion connection beam 1, and the multiple tension connectors 2 on the opposite sides of the conversion connection beam 1 are symmetrically distributed along the central axis of the conversion connection beam 1, and one end of the multiple tension connectors 2 is connected to the conversion connection beam 1, and the other end is passed through the cable tower 100; tension the tension connectors 2 on both sides of the conversion connection beam 1 in opposite directions to generate prestress in the tension connector 2. By arranging multiple tension connectors 2 at intervals on the opposite sides of the conversion connection beam 1, the tension connector 2 can avoid the existing structure, avoid the existing structure from hindering the arrangement of the tension connector 2, and flexibly adjust the tensioning position of the prestressed connector. The multiple tension connectors 2 on both sides of the conversion connection beam 1 are symmetrically distributed at the center, so that the forces on both sides of the conversion connection beam 1 can be balanced, so that the tensioning work of the tension connector 2 can be carried out smoothly, thereby ensuring the normal construction of the bridge.

[0053] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A prestressed tension conversion device, characterized in that: include: A conversion connection beam (1), at least one of which is provided, wherein the conversion connection beam (1) is configured to be provided between two cable towers (100); A tensioning connection member (2), wherein a plurality of the tensioning connection members (2) are arranged at intervals on opposite sides along the width direction of the conversion connection beam (1), and the plurality of the tensioning connection members (2) on both sides are symmetrically distributed along the central axis of the conversion connection beam (1), the tensioning connection member (2) is detachably connected to the conversion connection beam (1), and an end of the tensioning connection member (2) away from the conversion connection beam (1) is configured to be passed through the cable tower (100).

2. The prestressed tension conversion device according to claim 1, characterized in that: The prestressed tension conversion device also includes an anchoring clamp (3); the conversion connecting beam (1) is provided with a through hole one along the width direction; the tension connection piece (2) passes through the through hole one and is clamped on the anchoring clamp (3); the anchoring clamp (3) is tightly pressed against the side wall of the conversion connecting beam (1).

3. The prestressed tension conversion device according to claim 2, characterized in that: The anchoring clamp (3) comprises an anchoring plate and a plurality of clips, wherein the anchoring plate is provided with a second through hole, the tensioning connecting member (2) passes through the second through hole, the plurality of clips are circumferentially arranged on the tensioning connecting member (2), and the plurality of clips are clamped in the second through hole, so that the anchoring plate clamps the tensioning connecting member (2) through the clips, and the anchoring plate is pressed against the side wall of the conversion connecting beam (1).

4. The prestressed tension conversion device according to claim 2, characterized in that: The conversion connection beam (1) comprises a beam body (11) and a buffer pad (12), wherein the buffer pad (12) is arranged on the side wall of the beam body (11), the beam body (11) is provided with a first hole section, and the buffer pad (12) is provided with a second hole section, the first hole section is directly opposite to the second hole section, so as to be connected to form the through hole 1, the tension connection member (2) passes through the first hole section and the second hole section, and is clamped on the anchor clamp (3), and the anchor clamp (3) is tightly pressed against the buffer pad (12).

5. The prestressed tension conversion device according to claim 2, characterized in that: The prestressed tension conversion device also includes a sealing member, which is sandwiched between the tension connection member (2) and the conversion connection beam (1) and is located on a side of the conversion connection beam (1) away from the anchoring clamp (3).

6. The prestressed tension conversion device according to any one of claims 1 to 4, characterized in that: The prestressed tension conversion device comprises a plurality of conversion connection beams (1), wherein the plurality of conversion connection beams (1) are arranged at intervals between two cable towers (100), and a plurality of tension connectors (2) are arranged at intervals between two adjacent conversion connection beams (1) and between the conversion connection beam (1) and the cable tower (100) along the extension direction of the conversion connection beam (1), and the plurality of tension connectors (2) are symmetrically distributed along the central axis of the conversion connection beam (1).

7. The prestressed tension conversion device according to any one of claims 1 to 4, characterized in that: The tensioning connector (2) comprises a steel strand.

8. A method for installing and using a prestressed tension conversion device, using the prestressed tension conversion device as described in any one of 1 to 7 above, characterized in that: The installation and use method of the prestressed tension conversion device comprises the following steps: Lifting the conversion connection beam (1) to the location to be installed, and determining the layout position of the tension connection member (2) according to the construction situation; The plurality of tension connectors (2) are arranged at intervals on two opposite sides of the conversion connection beam (1), and the plurality of tension connectors (2) on the two opposite sides of the conversion connection beam (1) are symmetrically distributed along the central axis of the conversion connection beam (1), and one end of the plurality of tension connectors (2) is connected to the conversion connection beam (1), and the other end is passed through the cable tower (100); The tensioning connectors (2) on both sides of the conversion connection beam (1) are tensioned in opposite directions so that prestress is generated in the tensioning connectors (2).

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