CN110263441A - A kind of steel strand wires rope flexural property research method - Google Patents
A kind of steel strand wires rope flexural property research method Download PDFInfo
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- CN110263441A CN110263441A CN201910543293.0A CN201910543293A CN110263441A CN 110263441 A CN110263441 A CN 110263441A CN 201910543293 A CN201910543293 A CN 201910543293A CN 110263441 A CN110263441 A CN 110263441A
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Abstract
The invention belongs to technology for cable-stayed bridges fields, disclose a kind of steel strand wires rope flexural property research method, it include: to establish steel strand wires rope Finite Element Beam model of element, it is fitted creation steel wire spiral line model according to the parametric equation of helix, grid dividing is carried out to the spiral line model and obtains limited-element unit model；Flexural property research is carried out based on the limited-element unit model.Steel strand wires rope flexural property research method provided by the invention can be greatly reduced calculation amount, promote computational efficiency in the case where realizing high-precision high-reliability simulation.
Description
Technical field
The present invention relates to technology for cable-stayed bridges field, in particular to a kind of steel strand wires rope flexural property research method.
Background technique
As the core component in cable-stayed bridge component part, the basic mechanical characteristic of suspension cable largely be will affect
To the load-carrying properties of cable-stayed bridge.Since suspension cable is mainly made of more steel wires or steel strand wires rope, the machinery of every steel wire
Interaction between performance and steel wire also just determines the mechanical property of drag-line entirety.In current engineer application, engineering
Personnel mostly only pay attention to the overall mechanical properties of drag-line, and suspension cable is reduced to the rod piece only acted on by axle power.But it will
It is that can not simulate drag-line internal problem that suspension cable, which is reduced to a bar unit either beam element,.In the prior art, seven are mostly used
The solid element finite element model of silk steel strand wires simulates steel wire, due to needing that steel wire is divided into many units, causes to calculate
Amount is big, inefficient.
Summary of the invention
The present invention provides a kind of steel strand wires rope flexural property research method, and it is special to solve kind steel strand wires rope bending in the prior art
The technical issues of property Modeling Research is computationally intensive, low efficiency.
In order to solve the above technical problems, the present invention provides a kind of steel strand wires rope flexural property research methods, comprising:
Steel strand wires rope Finite Element Beam model of element is established, creation steel wire spiral line mould is fitted according to the parametric equation of helix
Type carries out grid dividing to the spiral line model and obtains limited-element unit model；
Flexural property research is carried out based on the limited-element unit model.
Further, the flexural property research includes: the relationship research of sliding and bending stiffness between steel wire.
Further, the flexural property research includes: the relationship research of wire temperature and bending stiffness.
Further, the flexural property research includes: the relationship research of steel wire coefficient of friction and bending stiffness.
Further, the flexural property research includes: the relationship research of suspension cable axle power and bending stiffness.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
The steel strand wires rope flexural property research method provided in the embodiment of the present application, by each steel wire for being directed to steel strand wires rope
It is modeled, obtains Finite Element Beam model of element so as to fully take into account the change of properties of each steel wire to the shadow of cable wire entirety
It rings, so as to guarantee the reliability and precision of simulation, the reliability of Study of Lifting conclusion；Meanwhile the finite element based on steel wire
For beam element model compared with Model of Solid Elements, required unit is few, the finite element model up to several meters can be calculated, so as to big
Width reduces calculation amount, promotes computational efficiency.
Detailed description of the invention
Fig. 1 is the Finite Element Beam unit that seven steel strand wires rope flexural property research method provided in an embodiment of the present invention is related to
Model schematic；
Fig. 2 is seven steel strand wires rope Finite Element Beam model axial strain-load curve provided in an embodiment of the present invention；
Fig. 3 provides bending finite element model structure diagram for the embodiment of the present invention；
Fig. 4 is seven steel strand wires rope load-bending stiffness local curve provided in an embodiment of the present invention；
Fig. 5 is seven steel strand wires rope skidding distance maximum value provided in an embodiment of the present invention and bending stiffness curve graph；
Fig. 6 is displacement-bending stiffness curve under seven steel strand wires rope different temperatures provided in an embodiment of the present invention；
Fig. 7 is that seven steel strand wires ropes provided in an embodiment of the present invention are displaced load-bending stiffness curve；
Fig. 8 is seven steel strand wires ropes provided in an embodiment of the present invention not coaxial force bottom offset load-bending stiffness curve；
Fig. 9 is seven steel strand wires rope axle power-bending stiffness curve provided in an embodiment of the present invention.
Specific embodiment
The embodiment of the present application solves kind steel in the prior art and twists by providing a kind of steel strand wires rope flexural property research method
The technical issues of clue flexural property Modeling Research is computationally intensive, low efficiency.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
It states technical solution to be described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to the application skill
The detailed description of art scheme, rather than the restriction to technical scheme, in the absence of conflict, the embodiment of the present application
And the technical characteristic in embodiment can be combined with each other.
Referring to Fig. 1, a kind of steel strand wires rope flexural property research method comprehensively considers every steel wire in drag-line, to its essence
Refinement modeling, contact stress, the skidding distance sought between steel wire are equivalent, for damage process, the fretting fatigue etc. for studying drag-line
It lays the foundation.
It specifically includes:
Steel strand wires rope Finite Element Beam model of element is established, creation steel wire spiral line mould is fitted according to the parametric equation of helix
Type carries out grid dividing to the spiral line model and obtains limited-element unit model；
Flexural property research is carried out based on the limited-element unit model.
It is illustrated by taking seven steel strand wires ropes as an example, in general, the beam list of seven steel strand wires is established using ANSYS software
First finite element model, the result that static(al) is stretched are then based on this model compared with test result, are applied to and seek the anti-of drag-line
In curved rigidity, and sensitivity analysis is made to the bending stiffness of drag-line.Compared to traditional solid element finite element model, beam element
Model result is correct, and computational efficiency is greatly improved.The model is the research calculation amounts such as suspension cable fracture of wire and fatigue properties
Biggish finite element analysis lays the foundation.
Specifically, Ansys Classic is selected to build seven steel strand wires rope beam element models, and steel wire uses
Beam188 unit simplifies, which is based on Timoshenko beam theory, including shear-deformable effect, and being that linear is limited answers
Become unit, can be used to analyze elongated or medium elongated girder construction.
There are two nodes for Beam188 unit, there is six or 7 degree of freedom on each node.Simulate three-dimensional beam-beam contact
Osculating element be Conta176, the unit can preferable simulation Beam188 unit line-line contact, static friction can be used
Come the problems such as simulating the friction behavior between beam element, support big sliding and big sliding, which is Targe170.
The size and material properties reference table 1 of seven steel strand wires.
1 model major parameter of table
The setting of osculating element are as follows: since the steel wire arranging of steel strand wires is similar in parallel, so setting Keypot (3)=0；
Using automatic CNOF closing gap；Time step control is when contact condition changes, when contact fallout predictor prediction one is the smallest
Between step-length or load increment；Contact stiffness is to update in each sub-step；Contact surface action selection allows that slides not separate choosing
?.
Seven steel strand wires Finite Element Beam model modeling processes are as follows: creation spiral is fitted according to the parametric equation of helix first
Line carries out grid dividing after the cell attribute of helix is arranged, that is, forms Finite Element Beam model of element shown in FIG. 1, shares
700 beam elements, 707 nodes.
Each contact is followed successively by target radius of circle R1, contact to must have unique real constant number, the real constant of setting
Radius of circle R2, normal contact stiffness coefficient FKN, intrusion tolerance factor FTOLN and Maximum Contact friction stree TAUMAX.FKN
It is very big on result influence, it is subsequent individually to discuss to it；Settable smaller of FTOLN, this section is set as 0.05；
TAUMAX can be designed to σ s/3, and σ s therein refers to material yield strength.Generation of the osculating element in ANSYS Classic is ordered
Enabling is ESURF.
In terms of solving setting.The boundary condition of this paper is also the test with reference to Utting, i.e., applies to the node of one end
Fixed constraint constrains the rotation of the Z-direction of another end node, then applies ε=0 ..., 0.015 corresponding displacement load.It opens
Automatic time step, Newton-Raphson Full, using linear search.
Referring to fig. 2, since normal contact stiffness coefficient FKN is very big on the influence of the result of end reaction, therefore FKN is considered respectively
Axial strain-load result when for 0.002,0.003,0.005.It is seen that when axial strain is more than 0.008,
Seven steel strand wires enter mecystasis.It is close to the test result of Utting in the result of elastic range with the increase of FKN,
In the plastic stage, what finite element result was bonded with test result is not that very well, it is corresponding that the curve of FKN=0.05 removes ε=0.015
The error of finite element result and Utting test result is outside 5.47%, and other errors are all within 5%.Comprehensively consider and takes
FKN=0.05 carries out follow-up study.
Further, the flexural property research includes: sliding and the relationship research of bending stiffness, wire temperature between steel wire
The relationship research of relationship research, steel wire coefficient of friction and bending stiffness with bending stiffness and suspension cable axle power and bending stiffness
Relationship research.
Referring to Fig. 3, the model of progress bending process simulation is the Finite Element Beam model of element that upper section is established, size and net
Lattice division is identical.Boundary condition is one end consolidation, and the other end applies displacement load in Y-direction.
Bending stiffness EI is acquired according to the force method formula of structural mechanics to see shown in formula (1).
In formula, L is model length, and Δ is displacement load, and Fy is loading end end reaction.
Referring to fig. 4, the corresponding bending stiffness local curve of seven guy of twisted steel cable loads, it can be seen that when displacement lotus
When carrying very little, substantially in 0~2*10-5m range, the i.e. initial stage of displacement load application, the bending stiffness of seven steel strand wires ropes
Variation is little, because material enters far away mecystasis at this time, and deformation and sliding all very littles between steel wire, it is believed that its
Section does not change.It can deduce the maximum bending stiffness of seven steel strand wires near 1840Nm2 or more.Then due to
It is slid between steel wire and wire material deforms, displacement load bending stiffness after 2*10-5m is caused to be substantially reduced.Position
Shifting load changes after 1*10-3m gradually to be slowed down.
(1) the relationship research of steel wire sliding and bending stiffness
Sliding between steel wire can be such that close steel strand wires twisted together become loosely, according to the think of of layered slipping theory
Think, when the shearing inside suspension cable is greater than the threshold friction between steel wire, will lead to and slid between steel wire, influence drag-line
Globality, and then will affect the bending stiffness of drag-line.
Referring to Fig. 5, the bending stiffness being displaced under skidding distance maximum value is corresponding under load, where it can be seen that bending stiffness
It is in inverse function relationship with skidding distance maximum value.
(2) influence of the temperature to bending stiffness
Referring to Fig. 6, the linear expansion coefficient of steel wire is taken as 1.36*10-5/ DEG C.Choosing temperature is respectively 0 °, 20 ° and 40 °
Three kinds of operating conditions.Calculating analysis is carried out using seven steel strand wires Finite Element Beam model of element.It is seen that with temperature load
Increase, bending stiffness reducing, and temperature load has been that reduction acts on to bending stiffness.
(3) influence of the steel wire coefficient of friction to bending stiffness
When the shearing between steel wire is bigger than frictional force therein, steel wire can generate sliding.Sliding between steel wire so that
Steel wire is staggered, and influences the ability of the bearing load of each steel wire as a whole, and then can make the bending stiffness of steel strand drawn wire
It reduces.
Referring to Fig. 7, in order to study influence of the coefficient of friction to the bending stiffness of steel strand wires rope, respectively to the finite element built
The coefficient of friction parameter of the material item of beam element model is set to 0.115,0.172,0.230.It can be seen that coefficient of friction
Bigger, the bending stiffness of seven steel strand wires is bigger.
(4) influence of the suspension cable axle power to bending stiffness
In order to study influence of the suspension cable pulling force to its bending stiffness, in Finite Element Beam model of element loading end in addition to applying
Outside lateral displacement load, while applying the pulling force effect that size is respectively 0,4*108,8*108Pa.Its result is as follows.
Bending stiffness figure referring to Fig. 8 and Fig. 9, when with lateral displacement load being 1*10-3m under not coaxial pulling force effect.Axis
Power is significant to the raising of the bending stiffness of guy of twisted steel cable, axle power and bending stiffness correlation.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
The steel strand wires rope flexural property research method provided in the embodiment of the present application, by each steel wire for being directed to steel strand wires rope
It is modeled, obtains Finite Element Beam model of element so as to fully take into account the change of properties of each steel wire to the shadow of cable wire entirety
It rings, so as to guarantee the reliability and precision of simulation, the reliability of Study of Lifting conclusion；Meanwhile the finite element based on steel wire
For beam element model compared with Model of Solid Elements, required unit is few, the finite element model up to several meters can be calculated, so as to big
Width reduces calculation amount, promotes computational efficiency.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (5)
1. a kind of steel strand wires rope flexural property research method characterized by comprising
Steel strand wires rope Finite Element Beam model of element is established, creation steel wire spiral line model is fitted according to the parametric equation of helix,
Grid dividing is carried out to the spiral line model and obtains limited-element unit model；
Flexural property research is carried out based on the limited-element unit model.
2. steel strand wires rope flexural property research method as described in claim 1, which is characterized in that the flexural property research packet
It includes: sliding the relationship research with bending stiffness between steel wire.
3. steel strand wires rope flexural property research method as described in claim 1, which is characterized in that the flexural property research packet
It includes: the relationship research of wire temperature and bending stiffness.
4. steel strand wires rope flexural property research method as described in claim 1, which is characterized in that the flexural property research packet
It includes: the relationship research of steel wire coefficient of friction and bending stiffness.
5. steel strand wires rope flexural property research method as described in claim 1, which is characterized in that the flexural property research packet
It includes: the relationship research of suspension cable axle power and bending stiffness.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113297762A (en) * | 2021-05-24 | 2021-08-24 | 航天晨光股份有限公司 | Three-dimensional modeling method of metal net and equivalent model modeling method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005078556A (en) * | 2003-09-03 | 2005-03-24 | Yokohama Rubber Co Ltd:The | Finite element model creation method of structure, and simulation method of structure |
| CN102286916A (en) * | 2011-07-13 | 2011-12-21 | 东南大学 | Method for determining time varying reliability of prestressed concrete box girder bridge |
| JP2013200718A (en) * | 2012-03-26 | 2013-10-03 | Mitsuboshi Belting Ltd | Finite element model creation method of twisted cord, finite element model creation program, and finite element model creation apparatus |
| CN103556573A (en) * | 2013-10-08 | 2014-02-05 | 中交第二航务工程局有限公司 | Parallel steel stranded wire stay cable tensioning control method |
| CN104008235A (en) * | 2014-05-16 | 2014-08-27 | 天津机辆轨道交通装备有限责任公司 | Finite element analysis method for fine parametric modeling and performance testing of springs |
| CN105302994A (en) * | 2015-11-22 | 2016-02-03 | 沈阳黎明航空发动机(集团)有限责任公司 | Finite element simulation method of beam_plate shell structure |
-
2019
- 2019-06-21 CN CN201910543293.0A patent/CN110263441A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005078556A (en) * | 2003-09-03 | 2005-03-24 | Yokohama Rubber Co Ltd:The | Finite element model creation method of structure, and simulation method of structure |
| CN102286916A (en) * | 2011-07-13 | 2011-12-21 | 东南大学 | Method for determining time varying reliability of prestressed concrete box girder bridge |
| JP2013200718A (en) * | 2012-03-26 | 2013-10-03 | Mitsuboshi Belting Ltd | Finite element model creation method of twisted cord, finite element model creation program, and finite element model creation apparatus |
| CN103556573A (en) * | 2013-10-08 | 2014-02-05 | 中交第二航务工程局有限公司 | Parallel steel stranded wire stay cable tensioning control method |
| CN104008235A (en) * | 2014-05-16 | 2014-08-27 | 天津机辆轨道交通装备有限责任公司 | Finite element analysis method for fine parametric modeling and performance testing of springs |
| CN105302994A (en) * | 2015-11-22 | 2016-02-03 | 沈阳黎明航空发动机(集团)有限责任公司 | Finite element simulation method of beam_plate shell structure |
Non-Patent Citations (3)
| Title |
|---|
| 张戬杰等: "钢绞线拉索力学分析及试验验证", 《中国工程机械学报》 * |
| 李游等: "双塔单跨悬索桥空间主缆扭转性能数值分析", 《北京交通大学学报》 * |
| 韩淑洁: "基于ANSYS的金属软管参数化有限元建模方法", 《制造业自动化》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113297762A (en) * | 2021-05-24 | 2021-08-24 | 航天晨光股份有限公司 | Three-dimensional modeling method of metal net and equivalent model modeling method thereof |
| CN113297762B (en) * | 2021-05-24 | 2023-09-08 | 航天晨光股份有限公司 | Three-dimensional modeling method of metal net sleeve and equivalent model modeling method thereof |
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