CN215252379U - Quick aligning device of truss arch bridge installation - Google Patents
Quick aligning device of truss arch bridge installation Download PDFInfo
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- CN215252379U CN215252379U CN202121381653.0U CN202121381653U CN215252379U CN 215252379 U CN215252379 U CN 215252379U CN 202121381653 U CN202121381653 U CN 202121381653U CN 215252379 U CN215252379 U CN 215252379U
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- arch bridge
- truss
- truss arch
- lower chord
- alignment device
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Abstract
The utility model relates to a quick aligning device of truss arch bridge installation for support and fix a position the truss lower chord of truss arch bridge closure section when truss arch bridge closure section entering closure mouth closes up, quick aligning device of truss arch bridge installation is a guide positioning piece, including location base, side direction stop device and guide block, the location base constitutes the bottom of whole guide positioning piece, during the use the location base is placed to the level along the cross bridge, plays stabilizing action, side direction stop device is a pair of, respectively fixed connection in location base both sides, the guide block is a pair of in the cross bridge, is fixed in side direction stop device top, the guide block is used for leading-in two side direction stop device with the truss lower chord between, and two side direction stop device are used for spacing the truss lower chord. Compared with the prior art, the utility model discloses can solve steel truss arch bridge and fold the demand that the in-process was controlled and was fixed a position the line type, realize truss arch bridge fast, the accuracy folds.
Description
Technical Field
The utility model belongs to the technical field of bridge engineering construction and specifically relates to a quick aligning device of truss arch bridge installation is related to.
Background
The steel truss arch bridge has the advantages that the vertical rigidity is high, the rods are mainly pressed, the utilization rate of materials is high, meanwhile, a single rod is relatively light, the assembly is convenient, the construction requirement is relatively low, and in addition, the attractive and ambitious shape of the steel truss arch bridge enables the steel truss arch bridge to have high competitiveness in railway and highway bridges. The traditional steel truss arch bridge construction mainly adopts cantilever construction, a cantilever splicing method is adopted, firstly, an edge span support is erected, then an inclined pull buckle hanging and ballast counterweight system is installed to enhance the rigidity of a cantilever beam and weaken the downward winding amplitude of the cantilever end, the internal force of a rod piece is controlled within a reasonable range, then a midspan truss arch is installed by using an overwater positioning ship and a cable crane, and finally midspan folding is carried out. In the construction method, in order to ensure the smooth and stable construction process and simultaneously ensure the reasonable stress of the bridge and the structural system in construction, the whole line type is controlled during closure, and the mid-span closure segment is likely to rotate in a horizontal plane and swing in a vertical plane due to the large length, so that the construction control difficulty is greatly increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a quick aligning device of truss arch bridge installation can solve steel truss arch bridge and fold the demand that the in-process is controlled and is fixed a position the line type, realizes that truss arch bridge's is quick, accurate folds.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a quick alignment device for installing a truss arch bridge, which is used for supporting and positioning a truss lower chord of a truss arch bridge closure section when the truss arch bridge closure section enters a closure opening for closure,
the quick aligning device for installing the truss arch bridge is a guide positioning block, the guide positioning block comprises a positioning base, lateral limiting devices and a guide block, the positioning base forms the bottom of the whole guide positioning block, the positioning base is horizontally placed along a transverse bridge during use and plays a stabilizing role, the lateral limiting devices are in a pair and are respectively and fixedly connected to two sides of the positioning base, the guide blocks are in a pair in the transverse bridge direction and are fixed above the lateral limiting devices, the guide blocks are used for guiding the lower chord of the truss into the space between the two lateral limiting devices, and the two lateral limiting devices are used for limiting the lower chord of the truss.
In an embodiment of the present invention, the positioning base, the lateral limiting device and the guide block are made of steel.
The utility model discloses an in the embodiment, be welded connection between side direction stop device and the location base, be welded connection between guide block and the side direction stop device.
In an embodiment of the present invention, the lateral limiting device is a plate.
In an embodiment of the present invention, the distance between the two lateral position-limiting devices is 2mm larger than the overall dimension of the lower chord of the truss. Namely, a 2mm gap is reserved between the lateral limiting devices on the two sides and the shape of the lower chord of the truss. The 2mm gap is used as construction allowance.
The utility model discloses an in the embodiment, the cross section of guide block is right triangle, and the hypotenuse of cross section is towards truss last quarter, and shorter right-angle side level is under, and longer right-angle side is towards outside and vertical.
The utility model discloses an in the embodiment, the guide block is to being a pair of in horizontal bridge, places respectively in the truss lower chord's of truss arch bridge closure section the left and right sides, can get into established transverse position smoothly through the guide block when truss arch bridge closure section is transferred, satisfies transverse orientation's requirement.
In an embodiment of the present invention, the truss lower chord is a lower chord member at the end parts of the two longitudinal sides of the truss arch bridge closure segment.
The utility model discloses an in an embodiment, the lower chord member department processing of the vertical both sides tip of truss arch bridge closure segment has the wedge cushion, the angle of wedge cushion satisfies that it is in the horizontality at installation positioning adjustment completion back lower surface.
In an embodiment of the present invention, the positioning base is provided with a sliding plate on the upper surface, and the sliding plate is located between the two lateral limiting devices.
The utility model discloses an in the embodiment, when installation positioning adjustment goes on, the bottom surface of wedge cushion is shelved on the slide for the nimble adjustment of longitudinal position can be realized to truss arch bridge folds the section.
In one embodiment of the present invention, the guide positioning block is placed on the temporary support.
Compared with the prior art, the utility model has the advantages of it is following and beneficial effect:
(1) the quick aligning device for installing the truss arch bridge can conveniently and automatically support and position the lower truss chord of the truss arch bridge closure section in the hoisting construction process of the truss arch bridge closure section so as to better control the line type.
(2) In the prior art, when the truss arch bridge closure segment is closed, the truss arch bridge closure segment may have random horizontal rotation and vertical inclination, repeated trial and adjustment is needed, and the efficiency is low. The utility model discloses an aligning device simple structure easily assumes, the line type control problem when can solving truss arch bridge and fold the section construction.
(3) Among the prior art, truss arch bridge closes up a section location and relies on artifical observation and adjustment, has the potential safety hazard, the utility model discloses a manual work can be removed from to the direction locating piece for truss arch bridge closes up section automatic positioning and aligns, and safe and the operation of being convenient for has sufficient precision.
Drawings
Fig. 1 is a schematic structural view of a front cross section of a quick aligning device for installing a truss arch bridge in embodiment 1 of the present invention;
fig. 2 is a schematic side view of the quick aligning device for installing a truss arch bridge in embodiment 1 of the present invention;
fig. 3 is an application the utility model discloses in 1 truss arch bridge installation quick alignment device folds section hoist and mount construction method sketch map.
In the figure: 1-positioning a base; 2-lateral limiting device; 3-a guide block; 4-truss bottom chord; 5-wedge-shaped cushion blocks; 6, a sliding plate; 7-folding the opening; 8-guiding a positioning block; 9-temporary support; 10-hoisting point; 11-control points.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection, physical connection or wireless communication connection; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
Examples
Referring to fig. 1 and 2, the present embodiment provides a truss arch bridge installation quick alignment device for supporting and positioning a truss lower chord 4 of a truss arch bridge closure when the truss arch bridge closure enters a closure for closure, the truss arch bridge installation rapid alignment device is a guide positioning block, the guide positioning block comprises a positioning base 1, a lateral limiting device 2 and a guide block 3, the positioning base 1 forms the bottom of the whole guiding positioning block, when in use, the positioning base 1 is horizontally arranged along the transverse bridge direction to play a stabilizing role, the lateral limiting devices 2 are a pair and are respectively and fixedly connected with the two sides of the positioning base 1, the guide blocks 3 are a pair in the transverse bridge direction and are fixed above the lateral limiting devices 2, the guide block 3 is used for guiding the truss lower chord 4 into the space between the two lateral limiting devices 2, and the two lateral limiting devices 2 are used for limiting the truss lower chord 4.
Referring to fig. 1 and 2, in the present embodiment, the positioning base 1, the lateral limiting device 2 and the guide block 3 are all made of steel sections.
Referring to fig. 1 and 2, in the embodiment, the lateral limiting device 2 is connected with the positioning base 1 by welding, and the guide block 3 is connected with the lateral limiting device 2 by welding.
Referring to fig. 1 and 2, in the present embodiment, the lateral limiting device 2 is a plate.
Referring to fig. 1 and 2, in the embodiment, the distance between the two lateral limiting devices 2 is 2mm larger than the external dimension of the truss lower chord 4. Namely, a 2mm gap is reserved between the lateral limiting devices 2 on the two sides and the shape of the truss lower chord 4. The 2mm gap is used as construction allowance.
Referring to fig. 1 and 2, in the present embodiment, the cross section of the guide block 3 is a right triangle, the hypotenuse of the cross section faces the lower chord 4 of the truss, the shorter cathetus is horizontal below, and the longer cathetus faces the outside and is vertical.
Referring to fig. 1 and 2, in this embodiment, the guide blocks 3 are a pair in the transverse bridge direction and are respectively placed on the left and right sides of the truss lower chord 4 of the truss arch bridge closure segment, and when the truss arch bridge closure segment is lowered, the truss arch bridge closure segment can smoothly enter a predetermined transverse position through the guide blocks 3, so as to meet the requirement of transverse positioning.
In this embodiment, the truss lower chord 4 is a lower chord member at the end parts of two longitudinal sides of the closing section of the truss arch bridge.
Referring to fig. 2, in this embodiment, wedge-shaped cushion blocks 5 are processed at the lower chord members at the ends of the two longitudinal sides of the closing section of the truss arch bridge, and the angles of the wedge-shaped cushion blocks 5 are determined according to the installation line shape, so that the lower surfaces of the wedge-shaped cushion blocks are in a horizontal state after the installation, positioning and adjustment are completed.
Referring to fig. 1 and 2, in the embodiment, the upper surface of the positioning base 1 is provided with a sliding plate 6, and the sliding plate 6 is located between the two lateral limiting devices 2.
Referring to fig. 1 and 2, in the embodiment, when the installation positioning adjustment is performed, the bottom surface of the wedge-shaped cushion block 5 is placed on the sliding plate 6, so that the folding section of the truss arch bridge can be flexibly adjusted in the longitudinal position.
Referring to fig. 3, in this embodiment, the guide positioning block is placed on the temporary support 9.
Referring to fig. 3, the linear control construction method for the closure segment hoisting construction is performed by applying the truss arch bridge installation rapid alignment device in the embodiment, and after the truss arch bridge closure segment smoothly enters the range of the closure opening 7, truss lower chords 4 on the two longitudinal sides of the truss arch bridge closure segment are placed in guide positioning blocks 8 which are placed on temporary supports 9 in advance. Keeping the lower truss chord 4 in the lateral limiting device 2, adjusting two lifting points 10 along the bridge direction, and controlling the construction line shape of the truss arch bridge by measuring the position of a control point 11. And adjusting the lifting point 10 to enable the position of the control point 11 to reach the design position, stopping adjustment, keeping the positions of the lifting point 10 and the control point 11 unchanged, welding at the folding port 7, and then removing the temporary support 9.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.
Claims (10)
1. A truss arch bridge installation quick alignment device is used for supporting and positioning a truss lower chord (4) of a truss arch bridge closure section when the truss arch bridge closure section enters a closure opening for closure, and is characterized in that the truss arch bridge installation quick alignment device is a guide positioning block which comprises a positioning base (1), lateral limiting devices (2) and guide blocks (3), the positioning base (1) forms the bottom of the whole guide positioning block, when the truss arch bridge installation quick alignment device is used, the positioning base (1) is horizontally placed along a transverse bridge direction and plays a stabilizing role, the lateral limiting devices (2) are a pair and are respectively and fixedly connected to two sides of the positioning base (1), the guide blocks (3) are a pair in the transverse bridge direction and are fixed above the lateral limiting devices (2), and the guide blocks (3) are used for guiding the truss lower chord (4) into a position between the two lateral limiting devices (2), the two lateral limiting devices (2) are used for limiting the truss lower chord (4).
2. A truss arch bridge installation quick alignment device according to claim 1, wherein the positioning base (1), the lateral limiting device (2) and the guide block (3) are all made of steel sections.
3. The truss arch bridge installation quick alignment device as claimed in claim 1, wherein the lateral limiting device (2) is connected with the positioning base (1) by welding, and the guide block (3) is connected with the lateral limiting device (2) by welding.
4. A truss arch bridge installation quick alignment device as claimed in claim 1, wherein said lateral limiting means (2) is a plate.
5. A truss arch bridge installation quick alignment device as claimed in claim 1, wherein the distance between two lateral limiting devices (2) is 2mm larger than the external dimension of the truss lower chord (4).
6. A truss arch bridge installation quick alignment device as claimed in claim 1, wherein the cross section of the guide block (3) is right triangle, the hypotenuse of the cross section is towards the truss lower chord (4), the shorter cathetus is horizontal downwards and the longer cathetus is towards the outside and vertical.
7. The truss arch bridge installation quick alignment device as claimed in claim 1, wherein the truss lower chord (4) is a lower chord member at both longitudinal side ends of the truss arch bridge closure section.
8. The truss arch bridge installation quick alignment device according to claim 7, wherein wedge-shaped cushion blocks (5) are processed at the lower chord members at the two longitudinal side ends of the truss arch bridge closure section, and the angles of the wedge-shaped cushion blocks (5) are such that the lower surfaces thereof are horizontal after the installation positioning adjustment is completed.
9. A truss arch bridge installation quick alignment device as claimed in claim 1, wherein the positioning base (1) is provided with a sliding plate (6) on the upper surface, and the sliding plate (6) is located between the two lateral limiting devices (2).
10. A truss arch bridge installation quick alignment device as claimed in claim 1, wherein the guide positioning block is placed on the temporary support (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121381653.0U CN215252379U (en) | 2021-06-22 | 2021-06-22 | Quick aligning device of truss arch bridge installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121381653.0U CN215252379U (en) | 2021-06-22 | 2021-06-22 | Quick aligning device of truss arch bridge installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215252379U true CN215252379U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121381653.0U Active CN215252379U (en) | 2021-06-22 | 2021-06-22 | Quick aligning device of truss arch bridge installation |
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| Country | Link |
|---|---|
| CN (1) | CN215252379U (en) |
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2021
- 2021-06-22 CN CN202121381653.0U patent/CN215252379U/en active Active
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