CN216864862U - Reaction frame for prepressing zero block of continuous beam of highway - Google Patents
Reaction frame for prepressing zero block of continuous beam of highway Download PDFInfo
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- CN216864862U CN216864862U CN202220578504.1U CN202220578504U CN216864862U CN 216864862 U CN216864862 U CN 216864862U CN 202220578504 U CN202220578504 U CN 202220578504U CN 216864862 U CN216864862 U CN 216864862U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 44
- 239000010959 steel Substances 0.000 claims abstract description 44
- 230000000875 corresponding Effects 0.000 claims description 3
- 238000005056 compaction Methods 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 9
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 241000893018 Armeria Species 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003014 reinforcing Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000003637 basic solution Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of construction of highway continuous beams, and particularly discloses a reaction frame for prepressing a zero block of a highway continuous beam, which comprises a bearing platform embedded part, wherein the bearing platform embedded part comprises steel boxes embedded at the upper end and the lower end of a beam body and embedded parts arranged on the steel boxes, the steel boxes and the embedded parts on the same level are connected by adopting steel bars, a bracket is arranged on the bearing platform embedded part, one end of the bracket is connected with the embedded part at the upper end, the other end of the bracket is connected with the embedded part at the lower end, an oil jacking system is arranged on the bracket, the oil jacking system comprises a jack arranged on the bracket, a bearing I-shaped steel arranged on the jack and a jack support pad arranged on the bearing I-shaped steel, be equipped with the prepressing block on the jack backup pad, this frock has solved the problem that improves support pre-compaction efficiency of construction, provides a reaction frame that is used for the prepressing of highway continuous beam zero number piece.
Description
Technical Field
The application relates to the technical field of highway continuous beams, and particularly discloses a reaction frame for prepressing a zero block of a highway continuous beam.
Background
The support pre-pressing aims at eliminating the inelastic deformation of the support, the support square timber and the template and the compression settlement influence of the foundation, measuring the actual numerical value of the elastic deformation of the support, using the actual numerical value as the reference for setting the pre-camber data of the beam vertical formwork, and simultaneously checking the stress stability of the support to ensure the safety of the support.
The traditional support preloading adopts the preloading, piles the standard ballast weight according to the pre-compaction weight distribution with the crane, and whole heap is carried and is unloaded the process and need crane cooperation and time lengthy. After the reaction frame prepressing technology is adopted, the prepressing space is small, the number of required crane shifts is reduced, the loading and unloading time is shortened, and the construction efficiency is greatly improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem of improving the construction efficiency of support prepressing, and provides a reaction frame for prepressing a zero number block of a continuous beam of a highway.
In order to achieve the above object, the present invention provides the following basic solutions:
a reaction frame for prepressing a zero block of a continuous beam of a highway comprises a bearing platform embedded part, wherein the bearing platform embedded part comprises steel boxes embedded at the upper end and the lower end of a beam body and embedded parts arranged on the steel boxes, and the steel boxes and the embedded parts on the same level are connected by adopting steel bars;
install bracket on the cushion cap built-in fitting, bracket one end is connected with the built-in fitting that is located the upper end, and one end is connected with the built-in fitting that is located the lower extreme, be equipped with oil top jacking system on the bracket, oil top jacking system is including setting up jack on the bracket, installing the bearing I-steel on the jack and setting up the jack support pad at the bearing I-steel, be equipped with briquetting in advance on the jack support pad.
The principle and effect of this basic scheme lie in:
1. compared with the prior art, the novel prepressing tool is better in adaptability to a working face, more convenient and quicker to load and unload, and reduces resource consumption compared with the traditional preloading tool. The problem of use a large amount of standard ballast pieces to lead to the cost to increase is solved, the problem of using hoisting equipment in a large amount is solved, the slow problem of loading uninstallation has been solved, the higher problem of high mound pre-compaction risk has been solved, the efficiency of construction of pre-compaction has been improved, the cost is practiced thrift.
Furthermore, the reinforcing steel bars are HRB400 reinforcing steel bars, the dimension is phi 32mm, the mutually corresponding bearing platform embedded parts on the same horizontal line are oppositely pulled, and the beam body reinforcing steel bars cannot be displaced and burnt during opposite pulling.
Further, all adopt bracket connection between the roof beam body, adopt steel bar connection between the bracket, be located the oil top jacking system cooperation jack pad and the contact of pre-compaction piece on the bracket between the roof beam body.
Furthermore, the load-bearing I-shaped steel is I20a I-shaped steel formed by welding 3I-shaped steel pieces together.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 shows a structural schematic diagram of a reaction frame for zero block prepressing of a continuous beam of an expressway, which is proposed by an embodiment of the application.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined purpose of the present invention, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Reference numerals in the drawings of the specification include: the beam comprises a beam body 1, a reinforcing steel bar 2, a bracket 3, a bearing I-shaped steel 4, a pre-pressing block 5, a jack support pad 6, a jack 7, a steel box 8 and an embedded part 9.
The embodiment example is shown in figure 1:
a reaction frame for prepressing a zero block of a continuous beam of an expressway comprises a bearing platform embedded part 9, wherein the bearing platform embedded part 9 comprises steel boxes 8 embedded at the upper end and the lower end of a beam body 1 and embedded parts 9 installed on the steel boxes 8, and the steel boxes 8 and the embedded parts 9 on the same level are connected by adopting reinforcing steel bars 2;
the bracket support 3 is installed on the embedded part 9 of the bearing platform, one end of the bracket support 3 is connected with the embedded part 9 located at the upper end, the other end of the bracket support is connected with the embedded part 9 located at the lower end, an oil jacking system is arranged on the bracket support 3, the oil jacking system comprises a jack 7 arranged on the bracket support 3, a bearing I-shaped steel 4 installed on the jack 7 and a jack support pad 6 arranged on the bearing I-shaped steel 4, and a pre-pressing block 5 is arranged on the jack support pad 6.
The specific implementation process comprises the following steps:
as shown in fig. 1, a steel box 8 and a pull rod hole are embedded before concrete is poured on a beam body 1, an embedded part 9 is installed on the steel box 8, the steel box 8 and the embedded part 9 are connected through 32-gauge deformed steel bar, the steel bar 2 is an HRB400 steel bar 2, the bearing platform embedded parts 9 corresponding to each other on the same horizontal line are pulled oppositely, and the steel bar 2 of the beam body 1 cannot be displaced and burnt during pulling oppositely.
As shown in fig. 1, after the embedded parts 9 of the bracket brackets 3 on both sides of the beam body 1 are integrally hoisted to a measurement lofting position by a tower crane, one end of each bracket 3 is connected with the embedded part 9 at the upper end, and the other end is connected with the embedded part 9 at the lower end, after the bracket brackets 3 are installed, the bearing I-beams 4 and the jack support pads 6 arranged on the bearing I-beams 4 are installed, the bearing I-beams 4 are I20a I-beams which are welded together by 3 pieces, after the bearing I-beams 4 are installed, the jack support pads 6 are installed, and the jack support pads 6 are provided with the prepressing blocks 5.
As shown in figure 1, all adopt bracket 3 to connect between the roof beam body 1, adopt reinforcing bar 2 to connect between the bracket 3, be located the oil top jacking system cooperation jack back-up 6 on the bracket 3 between the roof beam body 1 and contact with briquetting 5 in advance.
Pre-pressing the bracket 3: for example, the following steps are carried out:
the concrete square amount of the front and rear overhanging areas is as follows: 31.76m3Middle is 74.405m3Considering beam end synchronous balanced loading, both sides are 74.405m3The weight is 193.5t, the construction load is considered as 5t, the weight of the template is 12.75t, and the total weight is as follows: 404.8 t. 8 jacks 7, considering the loading by 1.1 times, each jack having a maximum bearing weight: 55.66t, total 556.6KN.
The pre-load test loading was performed according to 4-stage loading, 10%, 50%, 100%, 110%, respectively.
The first time of loading to 10%, the load that front and back support jack 7 receives is: 506 knx0.1-50.6 KN;
the second time of loading to 50%, namely the load that front and back support jack 7 receives is: 506 knx0.5-253 KN;
the third time of loading to 100%, namely the load that front and rear support jacks 7 receive is: 506KN 506KNx 1;
the fourth loading is 110 percent, namely the load borne by the front and rear support jacks 7 is as follows: 506knx 1.1-556.6 KN;
the preloading test is carried out from 0 to 110 percent, after the loading is carried out by 4 levels, the unloading is carried out by 4 levels from 110 to 0, the load holding time is 5min after the loading is carried out in place each time, the change value of the bracket 3 of the bracket is observed, and then the next level of preloading is carried out.
The construction main points of this frock:
the steel box 8 and the embedded part 9 are accurate in position, and when the steel bar 2 is used for reinforcing and positioning, deviation is avoided;
the top of the beam body 1 is not in place, and the large surface is required to be flat and smooth to obtain a rough surface;
compared with the traditional preloading, the novel preloading tool has better adaptability to the working face, is more convenient and quick to load and unload, and reduces the consumption of resources. The problem of use a large amount of standard ballast pieces to lead to the cost to increase is solved, the problem of using hoisting equipment in a large amount is solved, the slow problem of loading uninstallation has been solved, the higher problem of high mound pre-compaction risk has been solved, the efficiency of construction of pre-compaction has been improved, the cost is practiced thrift.
The problem of improving support pre-compaction efficiency of construction is solved to this frock, provides a reaction frame that is used for pre-compaction of highway continuous beam zero number piece.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (4)
1. The utility model provides a reaction frame that is used for prepressing of highway continuous beam zero number piece which characterized in that: the beam comprises a bearing platform embedded part, wherein the bearing platform embedded part comprises steel boxes embedded at the upper end and the lower end of a beam body and embedded parts arranged on the steel boxes, and the steel boxes and the embedded parts on the same level are connected by adopting steel bars;
install bracket on the cushion cap built-in fitting, bracket one end is connected with the built-in fitting that is located the upper end, and one end is connected with the built-in fitting that is located the lower extreme, be equipped with oil top jacking system on the bracket, oil top jacking system is including setting up jack on the bracket, installing the bearing I-steel on the jack and setting up the jack support pad at the bearing I-steel, be equipped with briquetting in advance on the jack support pad.
2. The reaction frame for prepressing the zero-number block of the continuous beam on the highway according to the claim 1, wherein the steel bar is HRB400 steel bar with the size of 32mm, the corresponding bearing platform embedded parts on the same horizontal line are pulled oppositely, and the steel bar of the beam body cannot be displaced and burnt during pulling.
3. The reaction frame for prepressing the zero-number block of the continuous beam on the highway according to the claim 1, wherein the beam bodies are connected by bracket brackets, the bracket brackets are connected by steel bars, and an oil jacking system on the bracket brackets between the beam bodies is matched with a jack support pad to be contacted with the prepressing block.
4. The reaction frame for prepressing the zero-gauge block of the continuous beam of the highway according to the claim 1, wherein the load-bearing I-steel adopts 3I 20a I-steels which are welded together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220578504.1U CN216864862U (en) | 2022-03-16 | 2022-03-16 | Reaction frame for prepressing zero block of continuous beam of highway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220578504.1U CN216864862U (en) | 2022-03-16 | 2022-03-16 | Reaction frame for prepressing zero block of continuous beam of highway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216864862U true CN216864862U (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220578504.1U Active CN216864862U (en) | 2022-03-16 | 2022-03-16 | Reaction frame for prepressing zero block of continuous beam of highway |
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| Country | Link |
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| CN (1) | CN216864862U (en) |
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- 2022-03-16 CN CN202220578504.1U patent/CN216864862U/en active Active
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