CN106869027B - A kind of method for realizing the disrumpent feelings early warning of parallel steel wire suspension cable - Google Patents
A kind of method for realizing the disrumpent feelings early warning of parallel steel wire suspension cable Download PDFInfo
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- CN106869027B CN106869027B CN201710125889.XA CN201710125889A CN106869027B CN 106869027 B CN106869027 B CN 106869027B CN 201710125889 A CN201710125889 A CN 201710125889A CN 106869027 B CN106869027 B CN 106869027B
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- steel wire
- suspension cable
- early warning
- pretreatment
- disrumpent feelings
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/187—Machine fault alarms
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Ropes Or Cables (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of methods for realizing the disrumpent feelings early warning of parallel steel wire suspension cable, belong to the technical fields such as bridge, building structure.The steel wire of suspension cable includes pretreatment steel wire and ordinary steel wire in the present invention.Pretreatment steel wire is that ordinary steel wire is obtained by the fatigue damage of certain number.Pretreatment steel wire and ordinary steel wire in suspension cable of the present invention have different fatigue lives.In suspension cable during one's term of military service, by after a certain period of time, warning can be provided, soon to change suspension cable by pre-processing the leading disrumpent feelings of steel wire.Present invention implementation is easy to operate, does not change conventional parallel steel wire stay cable manufacture craft, increases seldom expense, improves the security of structure, have broad application prospects.
Description
Technical field
The present invention relates to a kind of methods for realizing the disrumpent feelings early warning of parallel steel wire suspension cable, belong to the skills such as bridge, building structure
Art field.
Background technology
The parallel steel wire suspension cable being made of steel wire, is widely used in the fields such as bridge, building already, for example as
The sunpender in suspension cable or arch bridge in cable-stayed bridge.The major accident that structure is damaged however, suspension cable breaks suddenly, does not have but always
Have and prevent.
By taking the suspension cable in cable-stayed bridge as an example, the disrumpent feelings statistical life of suspension cable is 3-16 so far, is rarely exceeded 20 years.
Though improving to some extent in recent years, it cannot still look to it identical with the service life of structure；Secondly as its load and environmental activity with
Machine, the rupture life of bridge stay cable are uncertainty, when disrumpent feelings are not aware that.
At present, although suspension cable is generally employed using life prediction as the health detection and diagnostic techniques of core and
The safeguard of " detecting for 3 years one, change for 10 years one ", but due to the randomness of load effect and the limitation of detection, from essence
On say, such detection and change measure, it is impossible to exclude the danger that suspension cable breaks suddenly.Due to suspension cable rationally, economical change
Time can not determine, therefore general bridge takes ' doubt disconnected just change ' more, be changed in batches or even full-bridge changes, waste once changing
Resource.If judgement is inaccurate, the expense higher rapid disconnected, the reparation and suspension cable that bridge is damaged change occurs for suspension cable.
Therefore there is an urgent need to a kind of method of the disrumpent feelings early warning of parallel steel wire suspension cable, can warn in advance, to change.
The content of the invention
It is an object of the invention to solve the problems, such as above-mentioned the deficiencies in the prior art and, provide it is a kind of realize it is parallel
The method for early warning that steel wire stay cable is disrumpent feelings.
A kind of method for realizing the disrumpent feelings early warning of parallel steel wire suspension cable provided by the invention, major programme are：It is using
When conventional method makes suspension cable, steel tendon outer layer is placed with pretreatment steel wire；The pretreatment steel wire is by ordinary steel wire tensioning
To certain value, then make what tension constant amplitude fluctuation in the upper and lower a certain range of the definite value no less than obtained for 10,000 times, there should be fatigue
Service life of the pretreatment steel wire of damage under identical military service experience is just slightly less than ordinary steel wire, so as to which meeting is disrumpent feelings in advance, provides
Early warning.Thus obtained pretreatment steel wire and ordinary steel wire have certain fatigue life poor, and ordinary steel can be compared by pre-processing steel wire
Silk reaches service life in advance, if be continuing with, disrumpent feelings, disrumpent feelings steel wire will occur in advance for pretreatment steel wire can tear height
Density polyethylene protective layer consequently facilitating finding, provides early warning, you can and suspension cable is replaced immediately, and generation suspension cable is avoided to break suddenly,
The phenomenon that bridge is damaged.At this point, ordinary steel wire has obtained using to greatest extent, has avoided resource also close to its fatigue life
Waste.
Further, in the stretching process for obtaining pretreatment steel wire, stretching force and its amplitude of variation are structure service phase
Between correspondence design load.Make the force-bearing situation of pretreatment steel wire close to the duty status of structure design.So Simulated Service state
Force-bearing situation, be in order to which pretreatment steel wire is allowed to reduce certain fatigue life under working condition in future in advance.
Further, during pretreatment steel wire is made, tensioning number is 100,000 times.Make pretreatment steel wire and common
Steel wire has that certain service life is poor, after pretreatment steel wire reaches service life, to have enough time to the fracture of whole skew cables,
Ensure to can be found that early warning phenomenon, to change suspension cable as early as possible.
Further, pretreatment steel wire is located at the hexagon corner of steel beam.In conventional suspension cable during one's term of military service, due to outside
The effect of environment and load, the steel wire in high density polyethylene protective coating is mostly disrumpent feelings since outer ring.Six side of steel beam
The high density polyethylene protective coating in shape corner is most thin, when pre-processing wire rupture, convenient for tearing high density polyethylene protective coating,
Provide early warning.
In addition, the material of pretreatment steel wire and ordinary steel wire can be stainless steel, can prevent from corroding, reduction is disrumpent feelings, makes
Into unnecessary waste.
Compared with prior art, the invention has the advantages that：Pre-process steel wire fracture hair more leading than ordinary steel wire
Go out early warning, and then there is certain time to change suspension cable, avoid occur suspension cable break suddenly, bridge damage the phenomenon that, improve structure
Security, protect personal safety；When pretreatment steel wire sends early warning, ordinary steel wire is obtained also close to its fatigue life
It uses to greatest extent, avoids the wasting of resources；Present invention implementation is easy to operate, does not change conventional parallel steel wire stay cable system
Make technique, increase seldom expense, have broad application prospects.
Description of the drawings
The schematic cross-sectional view of parallel steel wire suspension cable in Fig. 1 embodiments one.
The schematic cross-sectional view of parallel steel wire suspension cable in Fig. 2 embodiments two.
The schematic cross-sectional view of parallel steel wire suspension cable in Fig. 3 embodiments three.
It is identified in figure：1- high density polyethylene protective coatings, 2- pretreatment steel wires, 3- ordinary steel wires.
Specific embodiment
It is specific embodiments of the present invention below, and technical scheme is described with reference to attached drawing, but this
Invention is not limited to these embodiments.
Embodiment one
The corresponding schematic diagram of the embodiment is shown in Fig. 1.Suspension cable in the present invention includes：1 He of high density polyethylene protective coating
Coat pretreatment steel wire 2 therein and ordinary steel wire 3.The method provided by the invention for realizing the disrumpent feelings early warning of parallel steel wire suspension cable
For：Before suspension cable is made using conventional method, tensioning, stretching force and amplitude of variation are carried out to part steel wire and are on active service for structure
The correspondence design load of period, the number of tensioning is 100,000 times, obtains the pretreatment steel wire 2 with fatigue damage；Making oblique pull
Suo Shi, steel tendon outer layer are placed with pretreatment steel wire 2, also, pre-process 6 corners that steel wire 2 is located at the hexagon of steel beam.
Embodiment two
The corresponding schematic diagram of the embodiment is shown in Fig. 2.The embodiment and embodiment one the difference is that：Per skew cables
In have three pretreatment steel wires 2, be uniformly distributed in 3 corners of the hexagon of steel beam.
Embodiment three
The corresponding schematic diagram of the embodiment is shown in Fig. 3.The embodiment and embodiment one the difference is that：Per skew cables
In have two pretreatment steel wires 2, pretreatment steel wire 2 is located at steel tendon outermost layer, and is located on the suspension cable cross section center of circle
Relative position.
Claims (4)
- A kind of 1. method for realizing the disrumpent feelings early warning of parallel steel wire suspension cable, it is characterised in that：Oblique pull is being made using conventional method Suo Shi, steel tendon outer layer are placed with pretreatment steel wire；The pretreatment steel wire is to certain value by ordinary steel wire tensioning, then makes tension Constant amplitude fluctuation no less than obtains for 10,000 times in the upper and lower a certain range of the definite value, and the pretreatment steel wire with fatigue damage exists Service life under identical military service experience is just slightly less than ordinary steel wire, so as to which meeting is disrumpent feelings in advance, provides early warning.
- 2. a kind of method for realizing the disrumpent feelings early warning of parallel steel wire suspension cable according to claim 1, it is characterised in that： Into the stretching process of pretreatment steel wire, stretching force and its amplitude of variation are the correspondence design load of structure during one's term of military service.
- 3. a kind of method for realizing the disrumpent feelings early warning of parallel steel wire suspension cable according to claim 2, it is characterised in that：It is making During making pretreatment steel wire, tensioning number is 100,000 times.
- 4. a kind of method for realizing the disrumpent feelings early warning of parallel steel wire suspension cable according to claim 3, it is characterised in that：Pre- place Reason steel wire is located at the hexagon corner of steel tendon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710125889.XA CN106869027B (en) | 2017-03-05 | 2017-03-05 | A kind of method for realizing the disrumpent feelings early warning of parallel steel wire suspension cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710125889.XA CN106869027B (en) | 2017-03-05 | 2017-03-05 | A kind of method for realizing the disrumpent feelings early warning of parallel steel wire suspension cable |
Publications (2)
| Publication Number | Publication Date |
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| CN106869027A CN106869027A (en) | 2017-06-20 |
| CN106869027B true CN106869027B (en) | 2018-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710125889.XA Active CN106869027B (en) | 2017-03-05 | 2017-03-05 | A kind of method for realizing the disrumpent feelings early warning of parallel steel wire suspension cable |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6429504A (en) * | 1987-07-24 | 1989-01-31 | Ishikawajima Harima Heavy Ind | Holing rope support method for erecting suspension bridge cable |
| DE10062227A1 (en) * | 2000-12-13 | 2002-06-20 | Dyckerhoff & Widmann Ag | Method for installing and tensioning a freely tensioned tension member, in particular a stay cable for a stay cable bridge, and anchoring device for carrying out the method |
| TWI228560B (en) * | 2003-08-11 | 2005-03-01 | Bulgar Eden Entpr Co Ltd | Forming method for twisted cable and sleeve for bridge collapse preventing equipment and structure thereof |
| CN101824798A (en) * | 2010-03-08 | 2010-09-08 | 江苏法尔胜新日制铁缆索有限公司 | Main cable strand for large-span suspension bridge |
| CN104746428A (en) * | 2013-12-31 | 2015-07-01 | 上海浦江缆索股份有限公司 | Precision control method for stay rope manufacturing |
| CN203878473U (en) * | 2014-05-30 | 2014-10-15 | 中铁二十四局集团安徽工程有限公司 | Anti-corrosion wear-resistant steel strand stay cable |
| CN204151678U (en) * | 2014-07-09 | 2015-02-11 | 胥剑 | A kind of wire digging line |
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2017
- 2017-03-05 CN CN201710125889.XA patent/CN106869027B/en active Active
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Inventor after: Wei Jiandong Inventor after: Yang Guiyong Inventor after: Hou Linjie Inventor after: Liu Zhiguo Inventor after: Zhang Hailiang Inventor after: Li Weidong Inventor after: Luo Ning Inventor after: Jiang Yun Inventor after: Zhang Tianhang Inventor before: Wei Jiandong Inventor before: Guan Manyu Inventor before: Cheng Shupu |
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