CN220767717U - Counter-force frame is widened to biasing mound steel bent cap of adjustable counter weight - Google Patents
Counter-force frame is widened to biasing mound steel bent cap of adjustable counter weight Download PDFInfo
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- CN220767717U CN220767717U CN202321574887.6U CN202321574887U CN220767717U CN 220767717 U CN220767717 U CN 220767717U CN 202321574887 U CN202321574887 U CN 202321574887U CN 220767717 U CN220767717 U CN 220767717U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 122
- 239000010959 steel Substances 0.000 title claims abstract description 122
- 238000000034 method Methods 0.000 abstract description 9
- 238000010276 construction Methods 0.000 description 12
- 238000004873 anchoring Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Abstract
The utility model belongs to the technical field of bridges, and particularly relates to a widened counter-force frame of a bias pier steel bent cap with an adjustable counterweight. Including stretch-draw bench, steel strand wires, steel plate and bar, the steel plate sets up in the both sides of steel bent cap to the bar that crosses is fixed, steel bent cap's inboard is equipped with thick gusset and horizontal cross arm in advance, with thick gusset and horizontal cross arm welded connection, has 3 to splice the I-steel through vertical gusset on the steel plate of both sides, adopts high strength bolt to be provided with the stretch-draw bench at the anchor end and the pier bottom of two 3I-steels, is provided with the steel strand wires between the stretch-draw bench. The utility model aims to provide a bias pier steel bent cap widening reaction frame with an adjustable counterweight, which is matched with linear change of a main beam curve to meet the requirement of a transverse space required by pushing, and the bias load in the pushing process is accurately balanced by tensioning a steel strand according to a calculation result, and the integrity of a pier column is ensured on the basis of a tensioning point.
Description
Technical Field
The utility model belongs to the technical field of bridges, and particularly relates to a widened counter-force frame of a bias pier steel bent cap with an adjustable counterweight.
Background
The construction condition of the bridge construction project is gradually complicated, the site construction is restricted by the construction environment, the pushing method construction has the advantages of small influence on the existing traffic, low requirements on the construction site, simple construction equipment, no need of a large amount of manpower and material resources and the like, and the pushing method construction is widely applied to the background. The problem that the steel box girder is too large in transverse deflection occurs in the pushing construction of the curve bridge. In order to match with the curve linear change of the main beam, the required transverse space during pushing is met, the original pushing platform needs to be widened, and the method is realized by setting up a reaction frame and configuring a prestress steel beam.
Because of the characteristics of the curve bridge and the transverse offset generated in the pushing process, a larger construction space is often required, and the problem of larger bias voltage exists. The bearing capacity of the structure is usually satisfied according to the unfavorable condition to conventional widened reaction frame, causes the time limit for a project extension and expense increase, and in addition, conventional reaction frame fulcrum directly falls on the mound and carries the structure, causes stress concentration, influences the overall stability of pier.
Disclosure of Invention
The utility model aims to provide a bias pier steel bent cap widening reaction frame with an adjustable counterweight, which is matched with linear change of a main beam curve to meet the requirement of a transverse space required by pushing, and the bias load in the pushing process is accurately balanced by tensioning a steel strand according to a calculation result, and the integrity of a pier column is ensured on the basis of a tensioning point.
In order to achieve the technical effects, the technical scheme adopted by the utility model is as follows:
the utility model provides a counter-force frame is widened to biasing mound steel bent cap of adjustable counter weight, includes stretch-draw bench, steel strand wires, steel plate and steel bar, and the steel plate sets up in the both sides of steel bent cap to the steel bar that crosses is fixed, steel bent cap's inboard is equipped with thick gusset and horizontal cross arm in advance, with steel plate, thick gusset and horizontal cross arm welded connection, has 3 to splice the I-steel through vertical gusset all welding on the steel plate of both sides, adopts high strength bolt to be provided with stretch-draw bench at the anchor end and the pier bottom of two 3 to splice the I-steel, is provided with the steel strand wires between the stretch-draw bench.
Preferably, 4H-shaped steel is arranged between the two thick steel plates.
Preferably, the thick steel plate is a Q355C steel plate with the thickness of 30 mm.
Preferably, the specification of the steel bar is M95.
Preferably, the specification of the 3-piece I-steel is I56a I-steel.
Compared with the prior art, the utility model has the beneficial effects that:
the bias pier steel bent cap widening reaction frame with the adjustable counterweight can widen the eccentric pressure of the pier to be counteracted under the working conditions of pushing to carry out beam matching according to the requirement in the process of selecting and configuring the steel beam line, so that tensioning is carried out. In addition, the structure anchoring end is positioned on the pier bottom foundation, and compared with the supporting point positioned between piers in the prior art, the stress concentration of the pier body is avoided, so that the structure safety is improved.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model.
In the drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of the structure of the I-steel of the present utility model;
FIG. 3 is a schematic view of a tensioning bench according to the present utility model;
FIG. 4 is a side cross-sectional view of the present utility model;
the steel cap beam comprises a steel cap beam body, a pier bottom body, a tensioning bench body, a base steel plate body, steel strands, I-shaped steel spliced by 6.3, a thick steel plate body, a steel rod body, high-strength bolts, H-shaped steel, a thick rib plate body, a vertical rib plate body, a leveling layer and a horizontal cross arm.
Description of the embodiments
The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.
Examples
Referring to fig. 1-3, a counter-force frame is widened to bias pier steel bent cap of adjustable counter weight, including stretch-draw bench 3, steel strand 5, steel plate 7 and bar 8, steel plate 7 sets up in steel bent cap 1's both sides to the bar 8 that crosses is fixed, steel bent cap 1's inboard is equipped with thick lacing wire 11 and horizontal cross arm 14 in advance, welds thick steel plate 7, thick lacing wire 11 and horizontal cross arm 14 and connects, has all welded 3 pieces of I-steel 6 through vertical lacing wire 12 on the steel plate 7 of both sides, adopts high-strength bolt to be provided with stretch-draw bench 3 at the anchor end and pier bottom 2 of two 3 pieces of I-steel 6, is provided with steel strand 5 between the stretch-draw bench 3
4 400H-shaped steel 10 are arranged between the two thick steel plates 7.
The thick steel plate 7 is a Q355C steel plate with the thickness of 30 mm.
The specification of the steel bar 8 is M95.
The specification of the 3-piece I-steel is I56a I-steel.
The installation method of the utility model comprises the following steps:
s1: two Q355C thick steel plates 7 with the thickness of 30mm are fixed by traversing 4M 95 steel bars 8 through reserved pore channels of a steel bent cap 1, and two end parts of the steel bars 8 are fastened by nuts;
and 4 pieces of 400H-shaped steel 10 are transversely welded between two thick steel plates 7, and the reaction frame is fixedly connected with the required reinforcement side of the steel bent cap to form the widened steel bent cap.
S2: and the thick rib plates 11 preset on the inner side of the steel bent cap 1, the Q355C thick steel plate 7 set on the S1 and the horizontal cross arm 14 arranged in a lateral through length are welded and connected, so that the overall stability of the structure is improved, and meanwhile, the tail end of the steel bent cap is prevented from being tilted upwards.
S3: two groups of 3-piece 560I-steel 6 cross arms are arranged on a steel bent cap widening reaction frame arranged in the S1, and the I-steel 6 and the steel bent cap are connected by adopting a welding connection through adopting a single-side 4-channel vertical pulling rib plate 12, so that the integral stress is formed, and an upper bolster platform for pushing construction is formed.
S4: and the two sides of the anchoring end and the two sides of the pier bottom are provided with tensioning benches 3 by thick base steel plates 4 and high-strength bolts 9, the base steel plates 4 and the tensioning benches 3 are firmly welded, the high-strength bolts 9 are phi 25, and the single drawing force is 16.4 tons.
S5: after the setting of the anchoring end in the step S4 is completed, the eccentric pressure is counteracted according to calculation, the steel strand tensioning construction is carried out, the length of the steel strand is adjusted, and then initial tensioning, formal tensioning, load holding and anchoring are carried out.
The method provides a bias pier steel bent cap widening reaction frame with adjustable counterweights, which is characterized in that a thick steel plate and three-spliced I-steel are firstly built on an existing steel bent cap to form a preliminary widening section and a backing beam platform, the reaction frame is fixed through steel bar bolts and welding, and then the steel plate and the thick rib plate are welded and connected, so that the widening and backing beam section and a pier are integrally stressed, and after all welding is finished, a tensioning bench is arranged and corresponding steel strands are connected through the steel plate and the high-strength bolts. And finally, tensioning the counterweight of the steel wire harness.
Alternatively, the steel cover beam is welded with the steel plates at the two sides by the thick steel plate, buried in the leveling layer 13 and pressed under the I-shaped steel of the three-piece I56 a.
Optionally, the widened side of the reaction frame and the overhanging length are arranged at will according to the linearity of the main beam.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a counter-force frame is widened to biasing mound steel bent cap of adjustable counter weight which characterized in that: including stretch-draw bench (3), steel strand wires (5), steel plate (7) and bar (8), steel plate (7) set up in the both sides of steel bent cap (1) to bar (8) that cross are fixed, steel bent cap (1) inboard is equipped with thick lacing wire board (11) and horizontal cross arm (14) in advance, with steel plate (7), thick lacing wire board (11) and horizontal cross arm (14) welded connection, all welded 3 on steel plate (7) of both sides through vertical lacing plate (12) and splice I-steel (6), adopt high strength bolt to be provided with stretch-draw bench (3) at the anchor end and pier bottom (2) of two 3 splice I-steel (6), be provided with steel strand wires (5) between stretch-draw bench (3).
2. The adjustable weight biased pier steel bent cap widening reaction frame of claim 1, wherein: 4H-shaped steel (10) are arranged between the two thick steel plates (7).
3. The adjustable weight biased pier steel bent cap widening reaction frame of claim 2, wherein: the thickness of the thick steel plate (7) is 30mm of Q355C steel plate.
4. A counterweight adjustable bias pier steel bent cap widening reaction frame as recited in claim 3, wherein: the specification of the steel bar (8) is M95.
5. The adjustable weight biased pier steel bent cap widening reaction frame of claim 4, wherein: the specification of the 3-piece I-steel (6) is I56a I-steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321574887.6U CN220767717U (en) | 2023-06-20 | 2023-06-20 | Counter-force frame is widened to biasing mound steel bent cap of adjustable counter weight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321574887.6U CN220767717U (en) | 2023-06-20 | 2023-06-20 | Counter-force frame is widened to biasing mound steel bent cap of adjustable counter weight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220767717U true CN220767717U (en) | 2024-04-12 |
Family
ID=90603959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321574887.6U Active CN220767717U (en) | 2023-06-20 | 2023-06-20 | Counter-force frame is widened to biasing mound steel bent cap of adjustable counter weight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220767717U (en) |
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2023
- 2023-06-20 CN CN202321574887.6U patent/CN220767717U/en active Active
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