CN103115709B - A kind of for monitoring the cable wire meter protective device of deformed bar tension stress - Google Patents
A kind of for monitoring the cable wire meter protective device of deformed bar tension stress Download PDFInfo
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- CN103115709B CN103115709B CN201310021300.3A CN201310021300A CN103115709B CN 103115709 B CN103115709 B CN 103115709B CN 201310021300 A CN201310021300 A CN 201310021300A CN 103115709 B CN103115709 B CN 103115709B
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- cable wire
- monitoring
- wire meter
- shutoff
- deformed bar
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Abstract
The invention discloses a kind of for monitoring the cable wire meter protective device of deformed bar tension stress. The body two-port of its columnar hollow is equipped with shutoff; And described shutoff is provided with open-work, the outer surface of this body is provided with spiral reinforcement or screw machine indentation, in order to strengthen body and concrete anchoring. The invention solves the key technical problem that uses the inner deformed bar tension stress of type vibration wire cable wire meter monitoring prestressed concrete member; The use of type vibration wire cable wire meter, makes monitored data have stable, reliable feature, for long term monitoring provides Reliable guarantee; Cable wire meter protective device volume involved in the present invention is little, lightweight; and the strength and stiffness that tool is higher; built in concrete and can be played a very good protection to sensor; make the cable wire meter can free-extension in concrete component inside and move among a small circle; thereby realize the monitoring to tension of prestressed tendon stress, and can not produce significantly impact to the holistic resistant behavior of structure.
Description
Technical field
The present invention relates to a kind of protective device of cable wire meter, relate in particular to a kind of for monitoring the cable wire meter protective device of deformed bar tension stress.
Background technology
Prestressed reinforced concrete construction is a kind of very important version in civil engineering. The various aspects in field of civil engineering are contained in the application of prestressed concrete, as large public building, long-span bridge girder construction and large-scale hydraulic and electric engineering facility etc. These buildings in occupation of consequence, if there is in-service the problem of structure aspects, may cause engineering accident when serious in national economy is produced, and cause bad social influence. Therefore to important prestressed reinforced concrete construction carry out corresponding construction, the health monitoring work in stage of being on active service just seems particularly necessary.
Structural health monitoring technology has become the focus of field of civil engineering at present. Many important buildings have all been applied this technology both at home and abroad. Specifically comprise the content of the aspects such as static(al), power, geometry and environment for the monitoring of building. Particularly static(al) monitoring, for grasping, the service state of structure under normal working load is most important. But, see with regard to the current applicable cases of prestressed reinforced concrete construction health monitoring technology, few to the tension stress monitoring method in presstressed reinforcing steel length range. And the tension stress of deformed bar is the important indicator of reaction prestressed structure state.
Current, cable wire meter is the ideal transducer of rope class tension stress monitoring. It has data stabilization reliable, be subject to environmental factor disturb little, be applicable to the advantages such as wide range strain measurement. Be difficult to again realize but use cable wire meter directly to monitor presstressed reinforcing steel. Because deformed bar is bonded therein by concrete, so just need cable wire meter attached thereto to be also together cast in concrete. After concrete coagulation sclerosis, can limit the flexible of cable wire meter, thereby make it ineffective. Therefore, form a space that is beneficial to the survival of cable wire meter at inside concrete and just become the key of dealing with problems.
Summary of the invention
The present invention be directed to the problems referred to above propose, object is just to provide a kind of for monitoring the cable wire meter protective device of deformed bar tension stress. This protective device can be around inside concrete, cable wire meter formation free space, guarantee the free-extension of cable wire meter and move among a small circle, thereby realizing the monitoring to tension of prestressed tendon stress at inside concrete of cable wire meter.
The object of the invention is to realize by the following technical solutions:
For monitoring a cable wire meter protective device for deformed bar tension stress, the body two-port of its columnar hollow is equipped with shutoff; And described shutoff is provided with open-work, the outer surface of this body is provided with spiral reinforcement or screw machine indentation, in order to strengthen body and concrete anchoring.
On the adapting position of described body, be at least provided with a through hole.
Described body is made up of one of round steel pipe or rectangular steel tube.
The shutoff one end at described body two ends is fixed port shutoff; The other end is active port shutoff.
Described shutoff external diameter is greater than described body external diameter.
The present invention compared with prior art has following advantageous effect: the present invention is owing to having adopted the body of columnar hollow and be provided with spiral reinforcement or screw machine indentation on the outer surface of body, in order to strengthen body and concrete anchoring. Cable wire meter is placed in body, has formed the cable wire meter required free space of surviving at inside concrete, utilize the monitoring to tension of prestressed tendon stress in prestressed reinforced concrete construction inside of cable wire meter thereby realized. Volume of the present invention is little, lightweight, with low cost; long service life, and the higher strength and stiffness of tool, built in concrete and can be played a very good protection to sensor; and can not produce significantly impact to the holistic resistant behavior of structure, there is good social benefit.
Brief description of the drawings
Fig. 1 is perspective view of the present invention;
Fig. 2 is that cable wire meter of the present invention is fixed on the structural representation on deformed bar;
Fig. 3 is the perspective view of the present invention's duty in concrete.
In figure: body 1, open-work 2, shutoff 3, through hole 4, spiral reinforcement or screw machine indentation 5, cable wire meter 6, deformed bar 7.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail; but protection scope of the present invention is not limited by specific embodiment; be as the criterion with claims; in addition; under the prerequisite without prejudice to technical solution of the present invention, within any change that those of ordinary skill in the art that the present invention is made easily realize or change can fall into claim scope of the present invention.
Embodiment 1
The present invention is as shown in Figure 1 a kind of for monitoring the cable wire meter protective device of deformed bar tension stress, and body 1 two-port of its columnar hollow is equipped with shutoff 3; One end is fixed port shutoff; The other end is active port shutoff, and described shutoff 3 is provided with open-work 2, body 1 external diameter described in shutoff 3 external diameters are greater than. Described body 1 selects round steel pipe to process, and external diameter is between 8 ~ 12cm, and length is between 0.6 ~ 1.0m, and thickness is between 3 ~ 5mm. On the outer surface of body 1, be welded with the spiral reinforcement 5 of φ 6, in order to strengthen body 1 and concrete anchoring. The adapting position of described body 1 is provided with two through holes 4, be wherein located at middle part one as oil filler point, another be located at edge as wire fairlead.
Embodiment 2
Described body 1 adopts rectangular steel tube to process, and is welded with the screw machine indentation 5 of φ 6 on the outer surface of body 1, in order to strengthen body 1 and concrete anchoring. The other the same as in Example 1, repeats no more.
When concrete use:
First by fixed port shutoff and body 1 centering welding, then deformed bar 7 is penetrated from the open-work 2 of active port shutoff as shown in Figure 2 and Figure 3, pass from the open-work 2 of fixed port shutoff. When deformed bar 7 stops wearing muscle during apart from design attitude 0.6 ~ 1m. At this moment deformed bar 7 surrounding layers are carried out to peeling processing, and according to cable wire meter design attitude, cable wire meter 6 is installed. Again by deformed bar 7 and cable wire meter 6 along entering the interior suitable position of body 1, cable wire meter 6 wires are drawn from fairlead simultaneously. Finally active port shutoff and body 1 are welded, to oil filler point filling butter, with foamed glue to apparatus of the present invention sealing gap.
Claims (2)
1. for monitoring a cable wire meter protective device for deformed bar tension stress, it is characterized in that: body (1) two-port of columnar hollow is equipped with shutoff (3); And described shutoff (3) is provided with open-work (2), the outer surface of this body (1) is provided with spiral reinforcement or screw machine indentation (5), in order to strengthen body (1) and concrete anchoring, on the adapting position of described body (1), be at least provided with a through hole (4), described body (1) is made up of one of round steel pipe or rectangular steel tube, and shutoff (3) one end at described body (1) two ends is fixed port shutoff; The other end is active port shutoff.
2. according to claim 1 a kind of for monitoring the cable wire meter protective device of deformed bar tension stress, it is characterized in that: described shutoff (3) external diameter is greater than described body (1) external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310021300.3A CN103115709B (en) | 2013-01-22 | 2013-01-22 | A kind of for monitoring the cable wire meter protective device of deformed bar tension stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310021300.3A CN103115709B (en) | 2013-01-22 | 2013-01-22 | A kind of for monitoring the cable wire meter protective device of deformed bar tension stress |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103115709A CN103115709A (en) | 2013-05-22 |
| CN103115709B true CN103115709B (en) | 2016-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310021300.3A Expired - Fee Related CN103115709B (en) | 2013-01-22 | 2013-01-22 | A kind of for monitoring the cable wire meter protective device of deformed bar tension stress |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103115709B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339340A (en) * | 2018-10-25 | 2019-02-15 | 贵州理工学院 | A kind of external prestressing confined concrete filled tubular columns and its processing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5038622A (en) * | 1989-12-22 | 1991-08-13 | Tijmann Willem B | Strain gage assembly for measuring excessive tensile strain of a flexible elongated member, such as a steel structural cable, or an electrical transmission cable, or a glass fiber optic communication cable, which may slightly twist under tensile strain |
| CN1727600A (en) * | 2004-07-26 | 2006-02-01 | 北京市建筑工程研究院 | Method for converting stretching ends with binding prestress to stretching ends without binding prestress |
| CN1807050A (en) * | 2006-01-26 | 2006-07-26 | 许宏元 | Prestressing system device of concrete structure and method for manufacturing the same |
| CN200962030Y (en) * | 2006-09-22 | 2007-10-17 | 宁波杉工结构监测与控制工程中心有限公司 | Non enhanced optical fiber grating reinforcing steel bar device |
| CN201266127Y (en) * | 2008-09-28 | 2009-07-01 | 中冶建筑研究总院有限公司 | Force value monitoring device for steel bundle with bonding pre-stress |
| CN203148608U (en) * | 2013-01-22 | 2013-08-21 | 沈阳建筑大学 | Steel rope gauge protection device for monitoring tensile stress of prestressed reinforcing bars |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9074473B2 (en) * | 2011-06-07 | 2015-07-07 | Con-Tech Systems Ltd. | Hollow rebar for crosshole sonic logging access tubes and longitudinal concrete reinforcing in drilled shafts |
-
2013
- 2013-01-22 CN CN201310021300.3A patent/CN103115709B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5038622A (en) * | 1989-12-22 | 1991-08-13 | Tijmann Willem B | Strain gage assembly for measuring excessive tensile strain of a flexible elongated member, such as a steel structural cable, or an electrical transmission cable, or a glass fiber optic communication cable, which may slightly twist under tensile strain |
| CN1727600A (en) * | 2004-07-26 | 2006-02-01 | 北京市建筑工程研究院 | Method for converting stretching ends with binding prestress to stretching ends without binding prestress |
| CN1807050A (en) * | 2006-01-26 | 2006-07-26 | 许宏元 | Prestressing system device of concrete structure and method for manufacturing the same |
| CN200962030Y (en) * | 2006-09-22 | 2007-10-17 | 宁波杉工结构监测与控制工程中心有限公司 | Non enhanced optical fiber grating reinforcing steel bar device |
| CN201266127Y (en) * | 2008-09-28 | 2009-07-01 | 中冶建筑研究总院有限公司 | Force value monitoring device for steel bundle with bonding pre-stress |
| CN203148608U (en) * | 2013-01-22 | 2013-08-21 | 沈阳建筑大学 | Steel rope gauge protection device for monitoring tensile stress of prestressed reinforcing bars |
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| Publication number | Publication date |
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| CN103115709A (en) | 2013-05-22 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160518 Termination date: 20170122 |