CN221142486U - Counter-force prepressing device for 0# triangular bracket of large-cantilever short-tower cable-stayed bridge in water - Google Patents
Counter-force prepressing device for 0# triangular bracket of large-cantilever short-tower cable-stayed bridge in water Download PDFInfo
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- CN221142486U CN221142486U CN202322727553.4U CN202322727553U CN221142486U CN 221142486 U CN221142486 U CN 221142486U CN 202322727553 U CN202322727553 U CN 202322727553U CN 221142486 U CN221142486 U CN 221142486U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 238000009826 distribution Methods 0.000 claims abstract description 63
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000005056 compaction Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 abstract description 18
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 8
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 15
- 238000010276 construction Methods 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000000969 carrier Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model relates to the technical field of building construction, in particular to a counter-force prepressing device for a 0# triangular bracket of a large-cantilever short-tower cable-stayed bridge in water, wherein counter-force pull rods are arranged on two sides of a pier column, a distribution beam is arranged at the upper end of each counter-force pull rod, one end of each distribution beam is fixedly connected with the upper end of the side edge of the pier column, the other end of each distribution beam is fixedly connected with the side edge of the pier column through the triangular bracket, meanwhile, the end part of each counter-force pull rod penetrates through the corresponding distribution beam, and a jack and a counter-force frame are fixed at the end part of each counter-force pull rod. According to the utility model, the jack applies pressure to the counter-force frame and acts on the triangular bracket in a counteraction manner, so that the deformation influence of the stacking weight on the triangular bracket and the template is simulated, the problems of large weight quantity and long time during pre-pressing can be avoided, the basic requirement of template pre-pressing is met, material equipment such as pre-pressing lifting equipment investment and weight material investment is saved, and the difficulty of the pre-pressing process is reduced.
Description
Technical Field
The utility model relates to the technical field of building construction, in particular to a counter-force prepressing device for a 0# block triangular bracket of a large-cantilever short-tower cable-stayed bridge in water.
Background
With the rapid development of national infrastructure, traffic systems tend to be more complex, and large-span bridge design and application become normal due to river-crossing road-crossing requirements, wherein the most common structural form is a cantilever cast-in-situ beam, and the most common method of the cantilever cast-in-situ beam is a basket cantilever casting method. The 0# block is used as the first working procedure of the bridge superstructure, provides a solid working surface for hanging basket construction, and has self-evident importance of construction quality and safety. Therefore, the strength, the rigidity and the stability of the formwork system are required to be checked during the construction of the No. 0 block, and the stability of the formwork system is checked in a prepressing mode before the casting of the No. 0 block so as to ensure the construction quality and the safety control.
The traditional pre-pressing method comprises a water tank loading pre-pressing method, a sand bag (or precast block) loading pre-pressing method and the like. The pre-pressing method is used for construction, more materials are used, and in general, it is difficult to ensure that enough load weight materials are matched in a short time, so that the construction period is long. Meanwhile, high-altitude hoisting and large-amount stacking are at a large safety risk, so that the use of a water tank, a sand bag, a precast block and the like often cannot achieve the pre-pressing load capacity due to the limitation of stacking height.
Disclosure of utility model
The utility model aims to provide a counter-force prepressing device for a 0# block triangular bracket of a large-cantilever short-tower cable-stayed bridge in water, which solves the problems in the prior art.
The technical scheme of the utility model is as follows: the utility model provides a 0# triangular bracket counter-force pre-compaction device of big cantilever short tower cable-stayed bridge in water, including the pier stud, the both sides of pier stud all are provided with the counter-force pull rod, the upper end of counter-force pull rod is provided with the distribution roof beam, the one end of distribution roof beam carries out fixed connection with the side upper end of pier stud, the other end of distribution roof beam carries out fixed connection through triangular bracket and the side of pier stud, simultaneously the tip of counter-force pull rod runs through the distribution roof beam, just the end fixing of counter-force pull rod has jack and reaction frame, the reaction frame sets up the upper end at the jack, the jack sets up the upper end at the distribution roof beam.
Still further, the distribution roof beam is including secondary distribution roof beam and primary distribution roof beam, secondary distribution roof beam sets up the upper end side at the pier stud, primary distribution roof beam sets up in the lower extreme both sides of secondary distribution roof beam, just primary distribution roof beam and pier stud are parallel to each other, simultaneously the jack sets up the upper end at secondary distribution roof beam, the lower extreme of primary distribution roof beam is connected with the upper end of triangle bracket.
Furthermore, two adjacent secondary distribution beams are fixedly connected through connecting steel bars, and meanwhile the connecting steel bars penetrate through the upper ends of the pier columns.
Further, the triangular bracket comprises a transverse bracket, an oblique bracket and a vertical bracket, wherein the transverse bracket is arranged at the lower end of the primary distribution beam, and one end of the transverse bracket is fixedly connected with the side edge of the upper end of the pier column;
The vertical bracket is arranged on the side edge of the pier column, the vertical bracket and the pier column are parallel to each other, and meanwhile, the lower end of the vertical bracket is fixedly connected with the other end of the transverse bracket through the oblique bracket.
Furthermore, the upper end of the vertical bracket and the side edge of the upper end of the pier column, one end of the transverse bracket and the side edge of the upper end of the pier column, the lower end of the oblique bracket and the side edge of the pier column are fixedly connected through a fixing seat and a fixing screw rod.
Furthermore, the fixing seats at two sides of the upper end of the vertical bracket are positioned on the same horizontal line, and the fixing seats at two sides are fixedly connected through fixing screws.
The utility model provides a counter-force prepressing device for a 0# block triangular bracket of a large-cantilever short-tower cable-stayed bridge in water through improvement, which has the following improvement and advantages compared with the prior art:
The method comprises the following steps: according to the utility model, the jack applies pressure to the counter-force frame and acts on the triangular bracket in a counteraction manner, so that the deformation influence of the stacking weight on the triangular bracket and the template is simulated, the problems of large weight quantity and long time during pre-pressing can be avoided, the basic requirement of template pre-pressing is met, the construction period is greatly saved, the material equipment such as pre-pressing lifting equipment investment and weight material investment is saved, and the difficulty of the pre-pressing process is reduced;
The method comprises the following steps: according to the utility model, the jack reading is used for replacing the weighing of the pre-pressed material, so that the vertical transportation amount of the pre-pressed material is reduced, the pre-pressing weight error is reduced, the construction period and the cost are reduced, and meanwhile, the basic guarantee is provided for the engineering construction safety.
Drawings
The utility model is further explained below with reference to the drawings and examples:
FIG. 1 is a schematic structural view of a counter-force prepressing device for a 0# block triangular bracket of a large-cantilever short-tower cable-stayed bridge in water;
FIG. 2 is a schematic view of the installation of the triangular bracket of the present utility model;
Reference numerals illustrate:
1. a jack; 2. a triangular bracket; 201. a transverse bracket; 202. an inclined bracket; 203. a vertical bracket; 3. a reaction force pull rod; 4. a fixing seat; 5. a reaction frame; 6. a secondary distribution beam; 7. a primary distribution beam; 8. connecting steel bars; 9. a fixed screw; 10. pier column.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be understood that the dimensions of the various elements shown in the figures are not drawn to actual scale, e.g., the thickness or width of some layers may be exaggerated relative to other layers for ease of description.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined or illustrated in one figure, no further detailed discussion or description thereof will be necessary in the following description of the figures.
Referring to fig. 1-2, the embodiment provides a counter-force prepressing device for a 0# block triangular bracket of a large-cantilever short-tower cable-stayed bridge in water, which comprises a jack 1, a triangular bracket 2, a counter-force pull rod 3, a counter-force frame 5, pier columns 10 and a distribution beam. Wherein reaction pull rod 3 sets up in the both sides of pier stud 10, and the distribution roof beam sets up in the upper end of reaction pull rod 3, and fixed connection is carried out with the side upper end of pier stud 10 to the one end of distribution roof beam simultaneously, and fixed connection is carried out through triangle bracket 2 and the side of pier stud 10 to the other end of distribution roof beam. Notably, the connection point between the other end of the distribution beam and the side edge of the pier column 10 is located below the connection point between the one end of the distribution beam and the upper end of the side edge of the pier column 10. Meanwhile, the end part of the counter-force pull rod 3 penetrates through the distribution beam, and the jack 1 and the counter-force frame 5 are fixed at the end part of the counter-force pull rod 3. Wherein reaction frame 5 sets up in the upper end of jack 1, and jack 1 sets up the upper end at the distribution roof beam.
In this embodiment, the distribution beam comprises a secondary distribution beam 6 and a primary distribution beam 7. Wherein the secondary distribution beam 6 is arranged at the side edge of the upper end of the pier column 10, the primary distribution beam 7 is arranged at the two sides of the lower end of the secondary distribution beam 6, the primary distribution beam 7 and the pier column 10 are parallel to each other, meanwhile, the jack 1 is arranged at the upper end of the secondary distribution beam 6, and the lower end of the primary distribution beam 7 is connected with the upper end of the triangular bracket 2. It is noted that two adjacent secondary distribution beams 6 are fixedly connected through a connecting steel bar 8, and the connecting steel bar 8 penetrates through the upper end of the pier column 10.
In the present embodiment, the triangular bracket 2 includes a transverse bracket 201, an oblique bracket 202, and a vertical bracket 203. Wherein the transversal carriers 201 are arranged at the lower end of the primary distribution beam 7, and one end of the transversal carriers 201 is fixedly connected with the upper end side of the abutment 10. Meanwhile, the vertical brackets 203 are arranged on the side edges of the pier column 10, and the vertical brackets 203 are parallel to the pier column 10. Notably, the lower end of the vertical bracket 203 and the other end of the horizontal bracket 201 are fixedly connected by the diagonal bracket 202.
Specifically, the upper end of the vertical bracket 203 and the upper end side of the pier column 10, one end of the horizontal bracket 201 and the upper end side of the pier column 10, and the lower end of the diagonal bracket 202 and the side of the pier column 10 are fixedly connected through the fixing base 4 and the fixing screw 9. The fixing bases 4 corresponding to the upper ends of the vertical brackets 203 and the upper end sides of the pier columns 10, and the fixing bases 4 corresponding to the one ends of the horizontal brackets 201 and the upper end sides of the pier columns 10 are respectively arranged on two sides of the upper ends of the vertical brackets 203. It should be noted that the fixing bases 4 on two sides of the upper end of the vertical bracket 203 are located on the same horizontal line, and the fixing bases 4 on two sides are fixedly connected through the fixing screw 9.
In the embodiment, the use process of the counter-force prepressing device for the 0# block triangular bracket of the underwater large-cantilever short-tower cable-stayed bridge is specifically as follows:
Step S1: before the pier column 10 is subjected to concrete pouring, pre-buried reinforcement measures of the counter-force pull rod 3 are made in advance to prevent the concrete from displacement in the pouring process, wherein welding and fixing are needed between an anchor backing plate of an anchor system of the counter-force pull rod 3 and a bearing platform reinforcing steel bar. Notably, the reaction force lever 3 must remain vertically arranged.
Meanwhile, after the triangular bracket 2 is installed, a jack 1, a reaction frame 5, a secondary distribution beam 6 and a primary distribution beam 7 are respectively installed. Wherein, the secondary distribution beam 6 and the primary distribution beam 7 both adopt I40b I-steel, the reaction frame 5 adopts double-spliced 45b I-steel, and the jack 1 adopts 200T to simulate loading of the box girder stress.
Step S2: before pre-pressing, the jack 1 and related measuring instruments are calibrated to ensure that the precision of the measuring instruments meets the requirements, and oil meter readings corresponding to each level of load are calculated according to a pre-pressing scheme. In this embodiment, 20 measurement observation points are arranged, where the observation points are connection points in front of the triangle bracket 2 corresponding to the bottom of each application point, and each application point corresponds to one.
One jack 1 is arranged at each of 20 observation points, and 20 jacks are arranged in total. Wherein each jack 1 is stressed by means of an upper reaction frame 5, the top of the jack 1 is supported on the reaction frame 5 and the bottom is supported on the distribution beam. Specifically, the jack 1 applies stress, and transmits force to the reaction frame 5 through the reaction action of the reaction pull rod 3, and reversely transmits force to the bottom distribution beam, so that the force is transmitted to the whole bracket system, and the aim of prepressing is achieved. It is noted that in the process of applying the load, the load should be applied according to the specification and the requirements of the design file, and is generally 1.1 times of the theoretical load.
Specifically, the load of each stage should be slowly and uniformly loaded, the deformation state of the triangular bracket 2 needs to be observed at the moment in the loading process, and once the abnormality is found, the loading needs to be stopped immediately, the reasons are analyzed, and the safety measures are taken and then the process is continued.
Wherein the loading duration of each stage of 20%, 50% and 80% is 0.5 hour, and the displacement value of each measuring point is measured 15 minutes before the loading of each stage is finished, and records are made. The 100% loading duration was 24 hours, and each measurement point was observed every 4 hours and recorded. The control standard of the hanging basket stability is that the difference value of continuous 3 times of elevation measurement data at the same point is not more than 2mm and the holding time is not less than 24 hours.
Meanwhile, in the pre-pressing process, the loading, holding and unloading processes of each stage are all required to be measured and recorded in elevation and deformation. After the pre-pressing is completed, the measured value is subjected to relative displacement analysis, and the elastic deformation value and the inelastic deformation value of the triangular bracket 2 are calculated to serve as the basis of the elevation of the 0# construction vertical mould.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a big cantilever short tower cable-stayed bridge 0# piece triangle bracket counter-force pre-compaction device in aquatic, its characterized in that, including pier stud (10), the both sides of pier stud (10) all are provided with counter-force pull rod (3), the upper end of counter-force pull rod (3) is provided with the distribution roof beam, the one end of distribution roof beam carries out fixed connection with the side upper end of pier stud (10), the other end of distribution roof beam carries out fixed connection through triangle bracket (2) and the side of pier stud (10), simultaneously the tip of counter-force pull rod (3) runs through the distribution roof beam, just the end fixing of counter-force pull rod (3) has jack (1) and counter-force frame (5), counter-force frame (5) set up the upper end at jack (1), jack (1) set up the upper end at the distribution roof beam.
2. The counter-force prepressing device for the 0# block triangular bracket of the cable-stayed bridge with the large cantilever in water according to claim 1, wherein the distribution beam comprises a secondary distribution beam (6) and a primary distribution beam (7), the secondary distribution beam (6) is arranged on the side edge of the upper end of the pier column (10), the primary distribution beam (7) is arranged on two sides of the lower end of the secondary distribution beam (6), the primary distribution beam (7) and the pier column (10) are parallel to each other, meanwhile, the jack (1) is arranged on the upper end of the secondary distribution beam (6), and the lower end of the primary distribution beam (7) is connected with the upper end of the triangular bracket (2).
3. The counter-force prepressing device for the 0# triangular bracket of the underwater large-cantilever short-tower cable-stayed bridge according to claim 2 is characterized in that two adjacent secondary distribution beams (6) are fixedly connected through connecting steel bars (8), and meanwhile the connecting steel bars (8) penetrate through the upper ends of pier columns (10).
4. The counter-force prepressing device for the 0# triangular bracket of the large-cantilever short-tower cable-stayed bridge in water according to claim 1 or 2, wherein the triangular bracket (2) comprises a transverse bracket (201), an oblique bracket (202) and a vertical bracket (203), the transverse bracket (201) is arranged at the lower end of the primary distribution beam (7), and one end of the transverse bracket (201) is fixedly connected with the side edge of the upper end of the pier column (10);
the vertical bracket (203) is arranged on the side edge of the pier column (10), the vertical bracket (203) and the pier column (10) are parallel to each other, and meanwhile, the lower end of the vertical bracket (203) is fixedly connected with the other end of the transverse bracket (201) through the inclined bracket (202).
5. The counter-force prepressing device for the 0# triangular bracket of the underwater large-cantilever short-tower cable-stayed bridge according to claim 4 is characterized in that the upper end of the vertical bracket (203) and the upper end side edge of the pier column (10), one end of the transverse bracket (201) and the upper end side edge of the pier column (10), the lower end of the inclined bracket (202) and the side edge of the pier column (10) are fixedly connected through the fixing seat (4) and the fixing screw (9).
6. The counter-force prepressing device for the 0# triangular bracket of the underwater large-cantilever short-tower cable-stayed bridge according to claim 5 is characterized in that the fixing seats (4) on two sides of the upper end of the vertical bracket (203) are positioned on the same horizontal line, and the fixing seats (4) on two sides are fixedly connected through fixing screws (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322727553.4U CN221142486U (en) | 2023-10-11 | 2023-10-11 | Counter-force prepressing device for 0# triangular bracket of large-cantilever short-tower cable-stayed bridge in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322727553.4U CN221142486U (en) | 2023-10-11 | 2023-10-11 | Counter-force prepressing device for 0# triangular bracket of large-cantilever short-tower cable-stayed bridge in water |
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| Publication Number | Publication Date |
|---|---|
| CN221142486U true CN221142486U (en) | 2024-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322727553.4U Active CN221142486U (en) | 2023-10-11 | 2023-10-11 | Counter-force prepressing device for 0# triangular bracket of large-cantilever short-tower cable-stayed bridge in water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221142486U (en) |
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2023
- 2023-10-11 CN CN202322727553.4U patent/CN221142486U/en active Active
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