CN220598143U - Simple positioning device for embedded ribs of expansion joints of prefabricated box girders - Google Patents
Simple positioning device for embedded ribs of expansion joints of prefabricated box girders Download PDFInfo
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- CN220598143U CN220598143U CN202322195140.6U CN202322195140U CN220598143U CN 220598143 U CN220598143 U CN 220598143U CN 202322195140 U CN202322195140 U CN 202322195140U CN 220598143 U CN220598143 U CN 220598143U
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- 238000003466 welding Methods 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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Abstract
The utility model provides a simple positioning device for embedded ribs of expansion joints of prefabricated box girders, and belongs to the technical field of bridge construction. The simple positioning device for the embedded bars of the prefabricated box girder expansion joints comprises a fixed structure and a box girder outer mold upright post. The outer die column of the box girder is arranged outside the box girder, a supporting structure is arranged on the outer die column of the box girder, the supporting structure is connected with the fixing structure through a jacking mechanism, and expansion joint embedded ribs are arranged on the fixing structure. The utility model can conveniently and accurately move and position the embedded bars of the expansion joint in different directions, simultaneously avoids the damage to the beam body caused by traditional welding or broken welding re-welding, ensures the bearing capacity and durability of the beam body and is more beneficial to subsequent use.
Description
Technical Field
The utility model relates to the technical field of bridge construction, in particular to a simple positioning device for pre-buried ribs of expansion joints of prefabricated box girders.
Background
After the prefabricated box girder finishes a simply supported continuous system, in order to prevent the girder body from expanding with heat and contracting with cold under the action of temperature and causing damage due to overlarge deformation, a structural seam, namely an expansion joint, is generally arranged between the girder end and the bridge abutment or between the multi-span girder body. The installation of the expansion joint is carried out after the beam body is erected and wet joints are applied. In order to facilitate the installation of the expansion joint, the pre-buried ribs of the expansion joint are generally required to be installed for positioning when the beam body is prefabricated. At present, the embedded bars of the expansion joints are mainly welded with the main bars of the roof of the beam body to realize fixation. The process mainly has two problems: firstly, the welding is directly carried out on the main reinforcement of the top plate of the beam body, so that the main reinforcement is always welded or the welding quality problem occurs, and the overall durability and bearing capacity of the beam body are affected; secondly, the embedded bars of the expansion joints are constructed according to experience, the precision is low, if the expansion joints are welded again by broken welding, the construction period is influenced, and meanwhile, secondary damage is caused to the main bars. Therefore, it is necessary to provide a simple positioning device for the embedded bars of the expansion joints of the prefabricated box girder to solve the above problems.
Disclosure of Invention
In order to make up for the defects, the utility model provides a simple positioning device for pre-buried ribs of an expansion joint of a prefabricated box girder, which aims to solve the problems that the pre-buried ribs of the traditional expansion joint are easy to weld a main rib of a top plate of a girder body, the installation precision of the pre-buried ribs is low, or the pre-buried ribs are required to be welded again or corrected for broken welding, and secondary damage is caused to the main rib of the box girder.
The utility model is realized in the following way:
the utility model provides a simple positioning device for embedded ribs of expansion joints of prefabricated box girders, which comprises a fixed structure and an outer mold upright post of the box girders.
The outer die column of the box girder is arranged outside the box girder, a supporting structure is arranged on the outer die column of the box girder, the supporting structure is connected with the fixing structure through a jacking mechanism, and expansion joint embedded ribs are arranged on the fixing structure.
In one embodiment of the utility model, the supporting structure comprises two supporting bottom plates and a supporting top plate, wherein the supporting top plate is fixed on the top surfaces of the two supporting bottom plates, one ends of the two supporting bottom plates are clamped on one side of the box girder outer mold upright post, the two supporting bottom plates are mounted on the box girder outer mold upright post through a first bolt and a first nut, and the first nut is in threaded connection with the end part of the first bolt.
In one embodiment of the present utility model, a notch is formed on one side of the supporting top plate.
In one embodiment of the utility model, the jacking mechanism comprises a second bolt and a jacking sleeve, wherein the second bolt penetrates through the notch, a gasket is sleeved on the second bolt, a second nut is connected to the second bolt in a threaded mode, the second nut is tightly attached to the gasket, and the jacking sleeve is connected to the second bolt in a threaded mode.
In one embodiment of the utility model, the fixing structure comprises a channel steel and a third nut, jacking holes are formed in two ends of the top surface of the channel steel, the second bolt penetrates through the jacking holes, the third nut is connected to the end portion of the second bolt in a threaded manner, and clamping grooves matched with the expansion joint embedded ribs are symmetrically formed in the wing plate at the bottom of the channel steel.
In one embodiment of the utility model, a plurality of clamping grooves are symmetrically distributed at equal intervals, a cushion layer is fixed in each clamping groove, and the embedded ribs of the expansion joints are clamped in the clamping grooves.
The beneficial effects of the utility model are as follows: according to the simple positioning device for the pre-buried ribs of the expansion joint of the prefabricated box girder, which is obtained through the design, when the simple positioning device is used, the supporting bottom plate is installed on the outer column of the box girder through the first bolt and the first nut, vertical position adjustment is carried out, at the moment, the second bolt penetrates through the notch and the gasket, horizontal position adjustment is realized by adjusting the position of the second bolt in the notch, then the second nut is installed on the second bolt and is fixed with the top surface extrusion of the gasket, at the moment, the jacking sleeve is connected with the second bolt in a threaded manner, the second bolt penetrates through the jacking hole in the channel steel, then the third nut is connected with the end part of the second bolt in a threaded manner, the jacking sleeve is moved on the surface of the second bolt and is matched with the surface extrusion of the third nut to carry out positioning and fixing, so that the pre-buried ribs of the expansion joint can be conveniently moved and positioned in different directions, meanwhile, the damage to the girder body caused by traditional welding or welding is avoided, and the bearing capacity and the durability of the girder body are more favorable for subsequent durable use.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an installation structure of a simple positioning device for embedded ribs of an expansion joint of a prefabricated box girder, which is provided by an embodiment of the utility model;
FIG. 2 is a schematic structural view of a simple positioning device for embedded ribs of expansion joints of prefabricated box girders according to an embodiment of the utility model;
FIG. 3 is a schematic diagram of an exploded structure of a simple positioning device for embedded ribs of an expansion joint of a prefabricated box girder according to an embodiment of the utility model;
fig. 4 is an enlarged view of fig. 3 a in accordance with the present utility model.
In the figure: 100. a support structure; 101. a support base plate; 102. a first nut; 103. a first bolt; 104. a supporting top plate; 1041. a notch; 200. a jacking mechanism; 201. a second bolt; 202. a gasket; 203. a second nut; 204. jacking the sleeve; 300. a fixed structure; 301. channel steel; 302. a clamping groove; 303. a cushion layer; 304. a jacking hole; 305. a third nut; 400. embedding ribs in the expansion joints; 500. and (5) a box girder external mold upright post.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
Examples
Referring to fig. 1-4, the present utility model provides a technical solution: a simple positioning device for pre-buried ribs of expansion joints of prefabricated box beams comprises a fixed structure 300 and an outer box beam mold upright post 500.
Referring to fig. 1 to 4, an outer mold column 500 for a box girder is installed at the outside of the box girder, a supporting structure 100 is installed on the outer mold column 500 for a box girder, a plurality of outer mold columns 500 for a box girder are provided, the supporting structure 100 is connected with a fixing structure 300 through a jacking mechanism 200, and expansion joint embedded ribs 400 are installed on the fixing structure 300.
The supporting structure 100 comprises two supporting bottom plates 101 and a supporting top plate 104, wherein the supporting top plate 104 is fixed on the top surfaces of the two supporting bottom plates 101, one ends of the two supporting bottom plates 101 are clamped on one side of the box girder external mold column 500, the two supporting bottom plates 101 are arranged on the box girder external mold column 500 through first bolts 103 and first nuts 102, the first bolts 103 penetrate through the two supporting bottom plates 101, and the first nuts 102 are connected with the ends of the first bolts 103 in a threaded manner; a notch 1041 is formed on one side of the supporting top plate 104; the two supporting bottom plates 101 can move in a certain range in the vertical direction of the outer die column 500 of the box girder through the first bolts 103 and the first nuts 102, and the vertical preliminary positioning of the expansion joint embedded ribs 400 is realized.
The jacking mechanism 200 comprises a second bolt 201 and a jacking sleeve 204, the second bolt 201 penetrates through the notch 1041, a gasket 202 is sleeved on the second bolt 201, a second nut 203 is connected to the second bolt 201 in a threaded mode, the second nut 203 is tightly attached to the gasket 202, the jacking sleeve 204 is connected to the second bolt 201 in a threaded mode, the second bolt 201 penetrates through the notch 1041, and movement adjustment in a certain range in the horizontal direction can be achieved through the second bolt 201 and the second nut 203.
The fixing structure 300 comprises a channel steel 301 and a third nut 305, jacking holes 304 are formed in two ends of the top surface of the channel steel 301, a second bolt 201 penetrates through the jacking holes 304, the third nut 305 is connected to the end portion of the second bolt 201 in a threaded mode, clamping grooves 302 matched with the expansion joint embedded ribs 400 are symmetrically formed in wing plates at the bottom of the channel steel 301, and vertical accurate positioning of the embedded ribs is achieved by screwing the jacking sleeve 204 up and down simultaneously; the jacking sleeve 204 on one side is adjusted to realize gradient adjustment, after the jacking sleeve 204 is utilized to finish positioning of the expansion joint embedded ribs 400, the third nuts 305 are screwed to finish fixing of the jacking mechanism 200, a plurality of clamping grooves 302 are symmetrically distributed at equal intervals, cushion layers 303 are fixed in the clamping grooves 302, the cushion layers 303 are made of elastic rubber, the expansion joint embedded ribs 400 are clamped in the clamping grooves 302, and the expansion joint embedded ribs 400 are directly plugged into the clamping grooves 302 and are embedded and fixed through elastic force realization devices of the cushion layers 303.
Specifically, the simple positioning device for the embedded bars of the expansion joints of the prefabricated box girder has the working principle that: during the use, with the one end joint of two supporting baseplate 101 on roof beam external mold stand 500, carry out vertical position control, then utilize first bolt 103 to run through two supporting baseplate 101 and roof beam external mold stand 500 and fix the tip at first bolt 103 through first nut 102, install bearing structure 100 to roof beam external mold stand 500, at this moment, pass opening 1041 and gasket 202 with second bolt 201, and adjust the position of second bolt 201 in opening 1041 and realize the horizontal direction and adjust, then install second nut 203 on second bolt 201 and fix with the top surface extrusion of gasket 202, at this moment with jacking sleeve 204 threaded connection on second bolt 201, and make second bolt 201 pass the inside jacking hole 304 of channel-section steel 301, then with third nut 305 threaded connection to the tip of second bolt 201, move and cooperate the surface extrusion of third nut 305 and channel-section steel 301 to fix a position through rotating jacking sleeve 204 on the surface of second bolt 201, realize the vertical regulation to expansion joint pre-buried muscle 400, can conveniently carry out the expansion joint in the process of using like this and can not make things convenient for the expansion joint to the same direction or weld the body to avoid the seam welding to the subsequent weld the nature to the seam welding and avoid the seam welding more has been done simultaneously.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. A simple positioning device for pre-buried ribs of expansion joints of prefabricated box girders comprises a fixed structure (300) and an outer mold upright post (500) of the box girders, and is characterized in that,
the outer die column (500) of the box girder is arranged outside the box girder, the outer die column (500) of the box girder is provided with a supporting structure (100), the supporting structure (100) is connected with the fixing structure (300) through a jacking mechanism (200), and the fixing structure (300) is provided with expansion joint embedded ribs (400).
2. The simple positioning device for the embedded ribs of the expansion joints of the prefabricated box girder according to claim 1, wherein the supporting structure (100) comprises two supporting bottom plates (101) and a supporting top plate (104), the supporting top plate (104) is fixed on the top surfaces of the two supporting bottom plates (101), one ends of the two supporting bottom plates (101) are clamped on one side of an outer box girder mold column (500), the two supporting bottom plates (101) are installed on the outer box girder mold column (500) through first bolts (103) and first nuts (102), and the first nuts (102) are in threaded connection with the end portions of the first bolts (103).
3. The simple positioning device for the embedded bars of the expansion joints of the prefabricated box girders according to claim 2, wherein a notch (1041) is formed on one side of the supporting top plate (104).
4. The simple positioning device for the embedded ribs of the expansion joints of the prefabricated box girders according to claim 3, wherein the jacking mechanism (200) comprises a second bolt (201) and a jacking sleeve (204), the second bolt (201) penetrates through the notch (1041), a gasket (202) is sleeved on the second bolt (201), a second nut (203) is connected to the second bolt (201) in a threaded mode, the second nut (203) is tightly attached to the gasket (202), and the jacking sleeve (204) is connected to the second bolt (201) in a threaded mode.
5. The simple positioning device for the embedded ribs of the expansion joint of the prefabricated box girder according to claim 4, wherein the fixing structure (300) comprises channel steel (301) and third nuts (305), jacking holes (304) are formed in two ends of the top surface of the channel steel (301), the second bolts (201) penetrate through the jacking holes (304), the third nuts (305) are connected with the end threads of the second bolts (201), and clamping grooves (302) matched with the embedded ribs (400) of the expansion joint are symmetrically formed in the wing plate at the bottom of the channel steel (301).
6. The simple positioning device for the embedded ribs of the expansion joint of the prefabricated box girder according to claim 5, wherein a plurality of clamping grooves (302) are symmetrically distributed at equal intervals, a cushion layer (303) is fixed in each clamping groove (302), and the embedded ribs (400) of the expansion joint are clamped in the clamping grooves (302).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322195140.6U CN220598143U (en) | 2023-08-15 | 2023-08-15 | Simple positioning device for embedded ribs of expansion joints of prefabricated box girders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322195140.6U CN220598143U (en) | 2023-08-15 | 2023-08-15 | Simple positioning device for embedded ribs of expansion joints of prefabricated box girders |
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| Publication Number | Publication Date |
|---|---|
| CN220598143U true CN220598143U (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322195140.6U Active CN220598143U (en) | 2023-08-15 | 2023-08-15 | Simple positioning device for embedded ribs of expansion joints of prefabricated box girders |
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| Country | Link |
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| CN (1) | CN220598143U (en) |
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2023
- 2023-08-15 CN CN202322195140.6U patent/CN220598143U/en active Active
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