CN113392460A - Self-prestress high-damping steel box girder structure and ABAQUS-based detection method thereof - Google Patents
Self-prestress high-damping steel box girder structure and ABAQUS-based detection method thereof Download PDFInfo
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- CN113392460A CN113392460A CN202110704866.0A CN202110704866A CN113392460A CN 113392460 A CN113392460 A CN 113392460A CN 202110704866 A CN202110704866 A CN 202110704866A CN 113392460 A CN113392460 A CN 113392460A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 73
- 239000010959 steel Substances 0.000 title claims abstract description 73
- 238000013016 damping Methods 0.000 title claims abstract description 28
- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 229920001971 elastomer Polymers 0.000 claims abstract description 35
- 238000004088 simulation Methods 0.000 claims abstract description 9
- 238000010276 construction Methods 0.000 claims description 11
- 238000002474 experimental method Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 3
- 230000006872 improvement Effects 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000011161 development Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/10—Numerical modelling
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
Abstract
The utility model provides a from prestressing force high damping steel box girder structure, includes bottom plate and roof, sets up two backup pads between bottom plate and the roof and forms the steel box girder, be located the stiffening rib that still is equipped with U type structure on the bottom plate between two backup pads. The invention aims to provide a self-prestressed high-damping steel box girder structure and a detection method thereof based on ABAQUS, and the accurate and effective thickness, paving mode and type of a rubber plate are obtained by comparing the numerical simulation result, the self characteristics of the rubber plate and the influence on the box girder with the actual steel box girder detection data and the finite element model data, so that the mechanical property of the self-prestressed high-damping steel box girder structure is improved by applying the self-prestressed high-damping steel box girder structure to an actual bridge.
Description
Technical Field
The invention belongs to the technical field of bridge mechanical characteristics, and particularly relates to a self-prestressed high-damping steel box girder structure and an ABAQUS-based detection method thereof.
Background
Bridges are artificial structures that span natural barriers such as deep-trench canyons, rivers, lakes, and seas. The bridge is a key project for realizing traffic intercommunication, and is an important dependence on national economic development and social stability. The bridge is a transportation junction, is an indispensable lifeline in infrastructure construction, can greatly accelerate the economic development of a region, and has total highway mileage of 484.65 kilometers, 85.15 kilometers and 5568.59 kilometers in the country as late as 2018.
Although China makes major breakthrough and achievement in bridge construction, the steel box girder bridge in China is developed later and is not large in application scale, in recent years, the development and application speed of the steel box girder bridge is increased year by year, experiences such as design, manufacture and erection are accumulated continuously, and research work is correspondingly advanced. The problem of surplus capacity of industrial materials such as national steel can be well solved by the massive development of the steel box girder bridge engineering, strategic industries such as new materials, smart city development, advanced equipment and the like in China and the rapid development of third industries such as agriculture, express delivery, new retail and the like are further driven, and therefore the bridge construction plays an important role in national economic growth. Therefore, the analysis of the earthquake resistance, static power and stability of the steel box girder bridge becomes the technical problem to be solved at present.
Disclosure of Invention
The invention aims to provide a self-prestressed high-damping steel box girder structure and a detection method thereof based on ABAQUS, and the accurate and effective thickness, paving mode and type of a rubber plate are obtained by comparing the numerical simulation result, the self characteristics of the rubber plate and the influence on the box girder with the actual steel box girder detection data and the finite element model data, so that the mechanical property of the self-prestressed high-damping steel box girder structure is improved by applying the self-prestressed high-damping steel box girder structure to an actual bridge.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the utility model provides a from prestressing force high damping steel box girder structure, includes bottom plate and roof, sets up two backup pads between bottom plate and the roof and forms the steel box girder, be located the stiffening rib that still is equipped with U type structure on the bottom plate between two backup pads.
The stiffening ribs on the bottom plate between the two supporting plates are linear stiffening ribs.
The straight stiffening ribs are two parallel straight stiffening ribs.
The stiffening ribs of the U-shaped structure and the straight stiffening ribs are rubber stiffening ribs.
A self-prestress high-damping steel box girder structure and a detection method based on ABAQUS thereof comprise the following steps:
1. establishing two finite element models, and setting attributes, analysis steps, interaction and boundary conditions;
2. calculating an operation result, and extracting power data according to the operation result;
3. establishing a steel box girder experiment model, and assembling according to related machining processes;
4. carrying out a power experiment on the model;
5. comparing the finite element model with relevant experimental data;
6. determining a rubber plate applied under an actual condition by comparing numerical simulation of the steel box girder with the steel box girder, and finishing determination of damping of the steel box girder and improvement of dynamic performance;
7. the determined thickness and variety of the improving effect of the rubber plate pair on the dynamic characteristics of the steel box girder under different construction conditions are obtained.
By adopting the technical scheme, the invention has the following beneficial effects:
1. the rubber provides a self-prestress for the steel box girder, simultaneously improves the damping of the box girder, can reduce or even cancel the arching of the steel box girder or the application of prestressed tendons, reduces the construction difficulty, greatly reduces the construction cost, improves the tensile property of the lower part of the steel box girder and greatly improves the vibration performance of a steel box girder bridge; 2. the overall stability of the bridge is positively influenced; 3. the construction is convenient, simple and quick, the maintenance and the replacement are easy, and the self-vibration influence of the bridge is reduced; 4. the dynamic performance of the box girder can be adjusted in real time by controlling the thickness and the type of the rubber plate; in order to simulate the contact relationship between rubber and a steel bottom plate, the rubber and the steel bottom plate are connected by utilizing the abaqus binding relationship to approach the practical situation, a steel member in a model is made of Q345 steel, a rubber plate is made of natural rubber, and the elastic plasticity, the super elasticity, the density and other properties of the material are respectively defined. In addition, data monitoring and detection are carried out on the steel box girder of the bridge in practice, strain gauges are arranged on a bottom plate, a wing plate, a web plate, a top plate and the like of the steel box girder, various measuring instruments are used for carrying out measurement on data such as settlement and deflection and comparing with a finite element model, and an accurate and effective rubber plate thickness, paving mode and variety are obtained by using a numerical simulation result and the characteristics of the rubber plate and the influence on the box girder, so that the mechanical property of the rubber plate is improved by applying the rubber plate to the actual bridge.
In summary, the invention provides a self-prestressed high-damping steel box girder structure and a detection method thereof based on ABAQUS, and the numerical simulation result and the self characteristics of a rubber plate and the influence on the box girder are compared with the actual steel box girder detection data and the finite element model data to obtain an accurate and effective rubber plate thickness, paving mode and type, so that the self-prestressed high-damping steel box girder structure is applied to an actual bridge to improve the mechanical property of the actual bridge.
Drawings
FIG. 1 is a schematic structural view of a U-shaped stiffening rib steel box girder according to the present invention;
FIG. 2 is a schematic structural view of a steel box girder with a linear stiffener according to the present invention.
Detailed Description
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:
the utility model provides a from prestressing force high damping steel box girder structure, includes bottom plate and roof, sets up two backup pads between bottom plate and the roof and forms the steel box girder, be located the stiffening rib that still is equipped with U type structure on the bottom plate between two backup pads.
The stiffening ribs on the bottom plate between the two supporting plates are linear stiffening ribs.
The straight stiffening ribs are two parallel straight stiffening ribs.
The stiffening ribs of the U-shaped structure and the straight stiffening ribs are rubber stiffening ribs.
A self-prestress high-damping steel box girder structure and a detection method based on ABAQUS thereof comprise the following steps:
1. establishing two finite element models, and setting attributes, analysis steps, interaction and boundary conditions;
2. calculating an operation result, and extracting power data according to the operation result;
3. establishing a steel box girder experiment model, and assembling according to related machining processes;
4. carrying out a power experiment on the model;
5. comparing the finite element model with relevant experimental data;
6. determining a rubber plate applied under an actual condition by comparing numerical simulation of the steel box girder with the steel box girder, and finishing determination of damping of the steel box girder and improvement of dynamic performance;
7. the determined thickness and variety of the improving effect of the rubber plate pair on the dynamic characteristics of the steel box girder under different construction conditions are obtained.
By adopting the technical scheme, the invention has the following beneficial effects:
1. the rubber provides a self-prestress for the steel box girder, simultaneously improves the damping of the box girder, can reduce or even cancel the arching of the steel box girder or the application of prestressed tendons, reduces the construction difficulty, greatly reduces the construction cost, improves the tensile property of the lower part of the steel box girder and greatly improves the vibration performance of a steel box girder bridge; 2. the overall stability of the bridge is positively influenced; 3. the construction is convenient, simple and quick, the maintenance and the replacement are easy, and the self-vibration influence of the bridge is reduced; 4. the dynamic performance of the box girder can be adjusted in real time by controlling the thickness and the type of the rubber plate. In order to simulate the contact relationship between rubber and a steel bottom plate, the rubber and the steel bottom plate are connected by utilizing the abaqus binding relationship to approach the practical situation, a steel member in a model is made of Q345 steel, a rubber plate is made of natural rubber, and the elastic plasticity, the super elasticity, the density and other properties of the material are respectively defined. In addition, data monitoring and detection are carried out on the steel box girder of the bridge in practice, strain gauges are arranged on a bottom plate, a wing plate, a web plate, a top plate and the like of the steel box girder, various measuring instruments are used for carrying out measurement on data such as settlement and deflection and comparing with a finite element model, and an accurate and effective rubber plate thickness, paving mode and variety are obtained by using a numerical simulation result and the characteristics of the rubber plate and the influence on the box girder, so that the mechanical property of the rubber plate is improved by applying the rubber plate to the actual bridge.
In summary, the invention provides a self-prestressed high-damping steel box girder structure and a detection method thereof based on ABAQUS, and the numerical simulation result and the self characteristics of a rubber plate and the influence on the box girder are compared with the actual steel box girder detection data and the finite element model data to obtain an accurate and effective rubber plate thickness, paving mode and type, so that the self-prestressed high-damping steel box girder structure is applied to an actual bridge to improve the mechanical property of the actual bridge.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides a from prestressing force high damping steel box girder structure, includes bottom plate and roof, sets up two backup pads between bottom plate and the roof and forms steel box girder, its characterized in that: and a stiffening rib with a U-shaped structure is also arranged on the bottom plate between the two supporting plates.
2. The self-prestressed high-damping steel box girder structure according to claim 1, wherein: the stiffening ribs on the bottom plate between the two supporting plates are linear stiffening ribs.
3. The self-prestressed high-damping steel box girder structure according to claim 2, wherein: the straight stiffening ribs are two parallel straight stiffening ribs.
4. The self-prestressed high-damping steel box girder structure according to claim 3, wherein: the stiffening ribs of the U-shaped structure and the straight stiffening ribs are rubber stiffening ribs.
5. The self-prestressed high-damping steel box girder structure and the ABAQUS-based detection method thereof according to claim 1, wherein the ABAQUS-based detection method comprises the following steps: the method comprises the following steps:
1. establishing two finite element models, and setting attributes, analysis steps, interaction and boundary conditions;
2. calculating an operation result, and extracting power data according to the operation result;
3. establishing a steel box girder experiment model, and assembling according to related machining processes;
4. carrying out a power experiment on the model;
5. comparing the finite element model with relevant experimental data;
6. determining a rubber plate applied under an actual condition by comparing numerical simulation of the steel box girder with the steel box girder, and finishing determination of damping of the steel box girder and improvement of dynamic performance;
7. the determined thickness and variety of the improving effect of the rubber plate pair on the dynamic characteristics of the steel box girder under different construction conditions are obtained.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110704866.0A CN113392460A (en) | 2021-06-24 | 2021-06-24 | Self-prestress high-damping steel box girder structure and ABAQUS-based detection method thereof |
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| CN202110704866.0A CN113392460A (en) | 2021-06-24 | 2021-06-24 | Self-prestress high-damping steel box girder structure and ABAQUS-based detection method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276666A (en) * | 2013-06-13 | 2013-09-04 | 北京国道通公路设计研究院股份有限公司 | Soft steel damping support |
| CN103590315A (en) * | 2013-11-25 | 2014-02-19 | 中铁第四勘察设计院集团有限公司 | Large-cantilever steel box beam with highway and railway on same layer |
| CN104532739A (en) * | 2014-12-31 | 2015-04-22 | 铁道第三勘察设计院集团有限公司 | Steel bridge noise reduction device |
| CN108560823A (en) * | 2018-03-28 | 2018-09-21 | 攀枝花学院 | PBL puts more energy into type open steel box-concrete combination beam and construction method |
| CN109505229A (en) * | 2018-12-13 | 2019-03-22 | 中交公局桥隧工程有限公司 | Highway high gradient slope stress equilibrium and vibration damping are taken precautions against natural calamities high bridge pier structure and construction method |
-
2021
- 2021-06-24 CN CN202110704866.0A patent/CN113392460A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276666A (en) * | 2013-06-13 | 2013-09-04 | 北京国道通公路设计研究院股份有限公司 | Soft steel damping support |
| CN103590315A (en) * | 2013-11-25 | 2014-02-19 | 中铁第四勘察设计院集团有限公司 | Large-cantilever steel box beam with highway and railway on same layer |
| CN104532739A (en) * | 2014-12-31 | 2015-04-22 | 铁道第三勘察设计院集团有限公司 | Steel bridge noise reduction device |
| CN108560823A (en) * | 2018-03-28 | 2018-09-21 | 攀枝花学院 | PBL puts more energy into type open steel box-concrete combination beam and construction method |
| CN109505229A (en) * | 2018-12-13 | 2019-03-22 | 中交公局桥隧工程有限公司 | Highway high gradient slope stress equilibrium and vibration damping are taken precautions against natural calamities high bridge pier structure and construction method |
Non-Patent Citations (2)
| Title |
|---|
| 谢祺: "步履式顶推施工中垫块刚度对钢混组合梁局部受力的影响分析", 《天津建设科技》 * |
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Application publication date: 20210914 |