CN211735099U - Cross-shaped construction clamp for transversely widening concrete box girder - Google Patents
Cross-shaped construction clamp for transversely widening concrete box girder Download PDFInfo
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- CN211735099U CN211735099U CN202020093030.2U CN202020093030U CN211735099U CN 211735099 U CN211735099 U CN 211735099U CN 202020093030 U CN202020093030 U CN 202020093030U CN 211735099 U CN211735099 U CN 211735099U
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- supporting beam
- supporting
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- concrete
- wide groove
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Abstract
The utility model discloses a cross construction fixture for transverse widening of concrete box girders, which comprises an old bridge, a new bridge, a seam, an upper bracket and a lower bracket above and below the seam; the method is characterized in that: the upper support consists of a first support beam and a second support beam; a first wide groove and a second wide groove are formed in the middle positions of the first supporting beam and the second supporting beam respectively, the first wide groove is formed in the second wide groove and connected through a second screw rod, the two ends of the second screw rod are fastened through nuts, the lower support frame is composed of third supporting beams which are parallel to each other, the third supporting beams are fixed below the joint, and the first supporting beam and the second supporting beam are connected with the third supporting beams through the screws. The utility model discloses an increase the rigid connection between new bridge and the old bridge, what use on the bridge floor upside is alternately the upside adjusting module who constitutes, can adjust the position of upper bracket through the angle of adjusting first supporting beam and second supporting beam, promote its steadiness.
Description
Technical Field
The utility model relates to a be used for concrete construction anchor clamps, more specifically the theory that says so especially relates to a be used for concrete trabecula horizontal wide cross construction anchor clamps of piecing together.
Background
The traffic construction speed of highway bridges in China is always at the world leading level, and the total mileage of highway bridges is located in the top international. However, the territory of China is vast, and the economic communication between the territories is frequent, so that the pressure of passenger transportation and freight transportation is high for a long time. The number of road and bridge traffic construction is still not satisfied with the transportation demand brought by the rapidly-increasing economy. Therefore, the lane widening and the increase of the number of bidirectional lanes become the most effective way for rapidly relieving traffic pressure. The widening of the original concrete box girder bridge is to connect the old bridge and the new bridge together through a cast-in-place wet joint. In the construction process, the quality of the seam cast-in-place concrete is ensured, and the traffic of the original small box girder bridge is ensured during pouring of the seam concrete. Therefore, a novel construction process is lacked for the transverse widening of the concrete box girder.
The utility model provides a cross construction anchor clamps that is used for concrete box girder transversely to piece together wide makes new, old concrete box girder form external rigid connection in concatenation department under the circumstances of guaranteeing to lead to, and vertical anchor clamps position can be adjusted to cross construction anchor clamps, improves anchor clamps stability to guarantee that wet joint concrete warp at the in-process of pouring evenly in succession, guarantee the quality of joint concrete from this point on, avoid causing the unnecessary loss. The method not only ensures the traffic capacity of the old bridge, but also greatly improves the integrity and the safety of the new and old small box girder bridges after being spliced, and provides reference significance for improving the comprehensive performance and accelerating the development of the traffic industry in China. The method has important practical value for bridge splicing construction in future, and has practical and feasible significance for perfecting concrete small box girder facilities and improving quality.
Disclosure of Invention
The utility model discloses an overcome above-mentioned technical problem's shortcoming, provide a cross construction anchor clamps that is used for concrete trabecula to transversely piece together width.
The utility model discloses a cross construction anchor clamps for the horizontal width of concrete box girder, including old bridge, new bridge, seam and upper bracket and lower bracket above and below the seam; the method is characterized in that: the upper bracket is formed by combining a first supporting beam and a second supporting beam; the middle positions of the first supporting beam and the second supporting beam are respectively provided with a first wide groove and a second wide groove, the width of the second wide groove is larger than that of the first wide groove, the first wide groove is arranged on the second wide groove, the two ends of the first supporting beam and the second supporting beam are respectively arranged on an old bridge and a new bridge floor, the lower support comprises third supporting beams which are parallel to each other, the third supporting beams are fixed below the joint, the positions of the third supporting beams correspond to those of the first supporting beam and the second supporting beam on the upper support, and the first supporting beam and the second supporting beam are connected through screws.
The utility model discloses a cross construction anchor clamps that is used for concrete trabecula to transversely piece together wide, a first supporting beam and a second supporting beam and a third supporting beam all adopt the I-steel, and a third supporting beam is two.
The utility model discloses a be used for wide cross construction anchor clamps is transversely pieced together to concrete trabecula, be fixed with the backing plate between first supporting beam, second supporting beam and the third supporting beam's both ends and old bridge and the new bridge.
The utility model discloses a cross construction anchor clamps that is used for concrete trabecula to transversely piece together wide, a first supporting beam, a second supporting beam and a third supporting beam that are located seam top and below are connected through two screw rods, and the both ends of screw rod are through the nut fastening.
The utility model discloses a cross construction anchor clamps that is used for concrete trabecula horizontal piece together width sets up and is fixed with the concrete that is arranged in the subtend seam and carries out the template that supports below the seam.
The utility model has the advantages that: the utility model discloses a wide cross construction fixture is transversely pieced together to concrete trabecula, upper and lower both sides comprise two I-steel respectively. The two I-shaped steels positioned on the upper side are crossed to form an upper side adjusting module; two I-beams on the lower side are arranged in parallel, and the upper and lower I-beams are connected into a whole through a high-strength screw rod and a nut.
The utility model discloses an increase the rigid connection between new bridge and the old bridge, what use on the bridge floor upside is alternately the upside adjusting module who constitutes, can adjust upside adjusting module's position through adjusting upper portion I-steel angle, promote its steadiness. Drilling holes in the position, which is one fourth away from the end part, of each I-shaped steel, and connecting the I-shaped steel by adopting a high-strength threaded screw and a bolt, so that the transverse connection capacity of the I-shaped steel is improved, and the transverse rigidity is improved.
Drawings
FIG. 1 is a schematic structural view of a cross-shaped construction clamp for transverse widening of a concrete box girder of the present invention;
FIG. 2 is a cross sectional view of the cross construction jig for transverse widening of the concrete box girder of the present invention;
fig. 3 is a schematic structural view of a first support beam of the present invention;
fig. 4 shows the present invention.
In the figure: the novel bridge comprises a first supporting beam 1, a second supporting beam 2, a third supporting beam 3, a screw rod 4, a nut 5, a backing plate 6, a template 7, an old bridge 8, a new bridge 9, a seam 10, an upper support 11, a lower support 12, a second wide groove 13 and a first wide groove 14.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and examples.
As shown in fig. 1 and 2, a structural schematic diagram and a cross-sectional view of a cross-shaped construction jig for transverse widening of a concrete box girder are respectively given, and as shown in fig. 3 and 4, a structural schematic diagram of a first support beam and a structural schematic diagram of a second support beam are respectively given; the cross-shaped construction clamp for transversely widening the concrete box girder comprises an upper bracket 11 and a lower bracket 12, wherein the upper bracket 1 is composed of a first supporting beam 1 and a second supporting beam 2, the lower bracket 12 is composed of a third supporting beam 3, the first supporting beam 1, the second supporting beam 2 and the third supporting beam 3 are all I-steel, thereby improving the rigidity of the whole clamp, the first wide groove 14 and the second wide groove 13 are respectively arranged at the central positions of the top surfaces of the first supporting beam 1 and the second supporting beam 2, the size of the second wide groove 13 is larger than that of the first wide groove 14, thereby realize that first supporting beam 1 can put into on the wide groove two 13 on the second supporting beam 2, the both sides of wide groove one 14 and wide groove two 13 are the arc surface so that make things convenient for the angular adjustment between first supporting beam 1 and the second supporting beam 2, both ends on first supporting beam 1 and the second supporting beam 2 are then installed on new bridge 9 and old bridge 8.
The lower support 12 is composed of two third support beams 3 which are parallel to each other, the position of each third support beam 3 corresponds to the position where the first support beam 1 and the second support beam 2 of the upper support 12 are fixed with the new bridge 9 and the old bridge 8, the corresponding positions of the upper support 11 and the lower support 12 are connected through a screw rod 4, so that the upper support 11 and the lower support 12 form a whole, the upper end and the lower end of the screw rod 14 are screwed by nuts 5 to prevent the supports from loosening, a backing plate 6 is arranged between the first support beam 1, the second support beam 2 and the third support beam 3 and between the new bridge 9 and the new bridge 8 to conveniently adjust the level of the bridge floor, a template 7 is arranged below a joint for preventing the loss of concrete in the concrete pouring process, and simultaneously, the forming effect of the concrete is also achieved.
The utility model discloses a concrete trabecula transversely pieces together wide cross construction fixture's concrete construction steps and is:
1. and manufacturing and assembling the upper side adjusting module. The upper side adjusting module consists of an upper I-shaped steel and a lower I-shaped steel. A rectangular groove is cut in the middle of the upper I-steel and the lower I-steel, the height of the rectangular groove is half of the height of the I-steel, and the size of the rectangular groove of the lower I-steel is slightly larger than that of the rectangular groove of the upper I-steel, so that the upper I-steel can be placed into the lower I-steel. And then, the web plates on two sides of the rectangular groove of the lower I-steel are continuously cut into circular arcs, so that the upper I-steel can rotate in the groove of the lower I-steel. And finally, after the upper I-steel and the lower I-steel are finished, the upper I-steel is reversely buckled in the groove of the lower I-steel, and the upper connecting module is assembled. During manufacturing, the cutting quality of the groove is paid attention to, and the periphery of the groove is polished to be smooth as much as possible.
2. Assembling the cross construction clamp for transversely assembling the small concrete box girder. According to the requirements of drawings, after the joint of the new concrete box girder bridge and the old concrete box girder bridge meets the design requirements, the transverse widening cross-shaped construction clamp is fixed. On the whole longitudinal bridge floor, firstly, arranging I-shaped steel according to the calculated space; and then, determining the position of the final upper side connecting module by adjusting the angle of the upper I-steel. And finally, connecting the I-beams on the upper side and the lower side through high-strength screws and screws, and further forming a whole body by the new bridge surface and the old bridge surface of the small concrete box girder.
3. And (5) binding steel bars at the joint. According to the drawing requirement, the steel bars at the joint of the small box girder bridge are reasonably arranged and bound, the bound steel bars pay attention to the connection of the joint part, and the problem of uneven concrete pouring is also paid attention to so as to avoid causing the problem of concrete quality.
4. And erecting the template. And building a concrete pouring template according to the requirements of drawings. When the concrete is erected, the gap between the templates is paid attention to meet the standard requirement, and the concrete quality reduction caused by slurry leakage is avoided.
5. And (6) pouring concrete. After the formwork is erected, concrete begins to be poured, and the concrete is vibrated fully in the concrete pouring process, so that the concrete pouring quality is guaranteed.
6. And (5) concrete curing. In the concrete curing process, water is sprayed regularly according to the standard requirements strictly to achieve the curing conditions required by the concrete until the concrete reaches the curing age of 28 days.
7. And (5) dismantling the cross construction clamp for transversely widening the concrete box girder. And (4) after the concrete reaches the curing age, dismantling the auxiliary construction tool for transversely splicing the small concrete box girder. Firstly, loosening the high-strength screw, dismantling the upper side connecting module, and separately arranging the upper I-steel and the lower I-steel. Then, the screw rods with the upper parts exceeding the concrete joint are directly cut, the I-shaped steel on the lower side is dismantled, the high-strength screw rods are directly cut on the lower side of the concrete joint, and the middle parts of the high-strength screw rods are left in the joint of the small concrete box girder. And finally, arranging the removed I-steel, maintaining and polishing the I-steel simultaneously, and storing the I-steel for the next use.
Claims (5)
1. A cross-shaped construction clamp for transversely widening a small concrete box girder comprises an old bridge (8), a new bridge (9), a joint (10), an upper bracket (11) and a lower bracket (12) above and below the joint (10); the method is characterized in that: the upper support (11) consists of a first support beam (1) and a second support beam (2); the middle positions of the first supporting beam (1) and the second supporting beam (2) are respectively provided with a first wide groove (14) and a second wide groove (13), the width of the second wide groove (13) is larger than that of the first wide groove (14), the first wide groove (14) is arranged on the second wide groove (13), two ends of the first supporting beam (1) and the second supporting beam (2) are respectively arranged on the bridge floor of an old bridge (8) and a new bridge (9), the lower support (12) consists of third supporting beams (3) which are parallel to each other, the third supporting beams (3) are fixed below a joint (10), the positions of the third supporting beams correspond to the first supporting beam (1) and the second supporting beam (2) on the upper support (11), and the first supporting beam (1) and the second supporting beam (2) are connected through a screw (4).
2. The cross-shaped construction clamp for the transverse widening of the concrete box girder according to claim 1, is characterized in that: the first supporting beam (1), the second supporting beam (2) and the third supporting beam (3) are all made of I-shaped steel, and the number of the third supporting beams (3) is two.
3. The cross-shaped construction clamp for the transverse widening of the concrete box girder according to claim 1 or 2, is characterized in that: backing plates (6) are fixed between the two ends of the first supporting beam (1), the second supporting beam (2) and the third supporting beam (3) and the old bridge (8) and the new bridge (9).
4. The cross-shaped construction clamp for the transverse widening of the concrete box girder according to claim 1 or 2, is characterized in that: the first supporting beam (1), the second supporting beam (2) and the third supporting beam (3) which are positioned above and below the joint (10) are connected through two screw rods (4), and two ends of each screw rod (4) are fastened through nuts (5).
5. The cross-shaped construction clamp for the transverse widening of the concrete box girder according to claim 1 or 2, is characterized in that: and a template (7) for supporting concrete poured in the joint is fixed below the joint (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020093030.2U CN211735099U (en) | 2020-01-16 | 2020-01-16 | Cross-shaped construction clamp for transversely widening concrete box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020093030.2U CN211735099U (en) | 2020-01-16 | 2020-01-16 | Cross-shaped construction clamp for transversely widening concrete box girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211735099U true CN211735099U (en) | 2020-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020093030.2U Expired - Fee Related CN211735099U (en) | 2020-01-16 | 2020-01-16 | Cross-shaped construction clamp for transversely widening concrete box girder |
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| CN (1) | CN211735099U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502055A (en) * | 2020-12-08 | 2021-03-16 | 广州大学 | Temporary locking device and transverse splicing construction method for new and old main girders of bridge |
-
2020
- 2020-01-16 CN CN202020093030.2U patent/CN211735099U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502055A (en) * | 2020-12-08 | 2021-03-16 | 广州大学 | Temporary locking device and transverse splicing construction method for new and old main girders of bridge |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201023 Termination date: 20220116 |