CN103226013A - Protector for concrete strain gauge - Google Patents
Protector for concrete strain gauge Download PDFInfo
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- CN103226013A CN103226013A CN 201310121871 CN201310121871A CN103226013A CN 103226013 A CN103226013 A CN 103226013A CN 201310121871 CN201310121871 CN 201310121871 CN 201310121871 A CN201310121871 A CN 201310121871A CN 103226013 A CN103226013 A CN 103226013A
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- protector
- strain gauge
- sensor
- rack
- longitudinal section
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a protector of a sensor, in particular to a protector of a vibrating wire strain gauge for monitoring internal strain of a concrete structure. The protector comprises steel bars; the longitudinal section of the protector is a quadrilateral, circular or elliptic columnar net rack; two support frames are arranged at an adaptive position of the longitudinal section in the net rack in parallel, and fixing ribs are arranged at two diagonals in each support frame in a crossed manner. The protector is small in size, light in weight and high in strength, can exert good protection and positioning effects on the sensor, and does not influence whole stress properties of a structure. The protector solves the problems that once contacted with the strain gauge, a vibrating needle results in the displacement of the sensor or damages the sensor during concreting. The protector ensures that the strain gauge has a monitoring effect in different buildings.
Description
Technical field
The present invention relates to a kind of protective device of sensor, relate in particular to the vibrating string extensometer protective device of monitoring xoncrete structure internal strain.
Background technology
Xoncrete structure is widely used in the construction of all kinds of engineerings with its superior performance.In recent years, along with China's rapid development of economy, xoncrete structure begins to develop to maximization, complicated direction.Continue to bring out such as large-sized concrete structures such as skyscraper, Longspan Bridge and hydraulic and electric engineering facilities.These important engineering structures in occupation of consequence, in case serious engineering accident occurs during runing, can cause serious loss to country in national economic development.Therefore, be necessary these large-sized concrete structures are taked suitable Crack Monitoring measure, the potential safety hazard that elimination may occur is for the safety and steady operation of structure provides safeguard.
Current, to the monitoring of concrete strain, the most frequently used sensor is exactly the type vibration wire concrete strain gauge.It has data stabilization reliable, be subjected to environmental factor disturb little, be fit to advantage such as wide range strain measurement.Yet when using it strain is monitored to inside concrete, common way is directly it to be embedded in the concrete.When casting concrete watered, in a single day vibrating spear touched strainometer, gently then caused sensor displacement, heavy then cause the damage of sensor.Therefore, the guard space at a sensor of inside concrete formation just becomes the key of dealing with problems.
Summary of the invention
The present invention be directed to the problems referred to above a kind of protective device that is used for the vibrating string extensometer of concrete stress monitoring is provided.This protective device can form guard space around inside concrete, strainometer, effectively avoided the direct contact of vibrating spear, thereby guarantees the accuracy and the strainometer survival rate of strainometer position.
The objective of the invention is to realize by the following technical solutions:
A kind of protective device of concrete strain gauge comprises: reinforcing bar, its longitudinal section are the circular or oval-shaped column rack of quadrilateral; Longitudinal section adapting position in this rack is parallel to be provided with two stand frames; Two diagonal angles all intersect and are provided with fixedly muscle in this stand frame.
Described rack also is provided with along the reinforced bulkhead of rack end face square crossing.
Described rack, stand frame, reinforced bulkhead reach fixedly, and muscle processes by φ 6 or φ 8 reinforcing bars.
The present invention compared with prior art has following advantageous effect: the present invention is owing to be provided with the column rack at inside concrete; and strainometer is fixed on the rack inner stent frame; make strainometer around form guard space, thereby effectively stop vibrating spear to contact with the direct of strainometer.Protective device of the present invention has that volume is little, in light weight, intensity is high, can play good protection and positioning action to sensor, and can the holistic resistant behavior of structure not exerted an influence.When having solved casting concrete, in a single day vibrating spear touches strainometer, gently then causes sensor displacement, heavy then cause the difficult problem of the damage of sensor, guarantees the monitoring effect of strainometer in difference is built.
Description of drawings
Fig. 1 is a kind of embodiment perspective view of protective device of the present invention.
Among the figure: rack 1, stand frame 2, fixedly muscle 3, reinforced bulkhead 4, fixed cover 5, type vibration wire concrete strain gauge 6.
Embodiment
Below in conjunction with specific embodiment the present invention is further described in detail; but protection scope of the present invention is not limited by specific embodiment; be as the criterion with claims; in addition; with under the prerequisite of technical solution of the present invention, any change or change that those of ordinary skills that the present invention made are realized easily can both fall within the claim scope of the present invention.
The protective device of a kind of concrete strain gauge of the present invention as shown in Figure 1, longitudinal section be the square, the length of side between 10 ~ 15cm, the rack 1 of cylindrical length between 25 ~ 30cm; Longitudinal section adapting position in this rack 1 is parallel to be provided with two corresponding stand frames 2 of shape; These stand frame 2 interior two diagonal angles intersect respectively and are provided with fixedly muscle 3; Above-mentioned rack 1 also is provided with along the sealing reinforced bulkhead 4 of rack end face square crossing.Above-mentioned rack 1, stand frame 2, reinforced bulkhead 4 reach fixedly, and muscle processes by φ 6 or φ 8 reinforcing bars.At last rack 1 is settled.
The column rack 1 that the longitudinal section is rounded; Longitudinal section adapting position in this rack 1 is parallel to be provided with two corresponding stand frames 2 of shape; Other repeats no more with embodiment 1.
The column rack 1 of longitudinal section ovalize; Longitudinal section adapting position in this rack 1 is parallel to be provided with two corresponding stand frames 2 of shape; Other repeats no more with embodiment 1.
When the present invention specifically uses, only need 5 colligations of type vibration wire concrete strain gauge 6 usefulness fixed covers on the cross fixation muscle fulcrum of stand frame 2, can freely stretch to guarantee strainometer.Then protective device of the present invention is placed in the relevant position in the concrete component to be built and gets final product.This protective device can form guard space around inside concrete, strainometer, thereby effectively stops vibrating spear to contact with the direct of strainometer.
Claims (3)
1. the protective device of a concrete strain gauge, comprising: reinforcing bar is characterized in that: the longitudinal section is the circular or oval-shaped column rack of quadrilateral (1); Parallel two stand frames (2) that are provided with of longitudinal section adapting position in this rack (1); Interior two diagonal angles of this stand frame (2) all intersect and are provided with fixedly muscle (3).
2. the protective device of a kind of concrete strain gauge according to claim 1, it is characterized in that: described rack (1) also is provided with the reinforced bulkhead (4) along the square crossing of rack end face.
3. the protective device of a kind of concrete strain gauge according to claim 1 is characterized in that: described rack (1), stand frame (2), reinforced bulkhead (4) and fixedly muscle process by φ 6 or φ 8 reinforcing bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310121871 CN103226013A (en) | 2013-04-10 | 2013-04-10 | Protector for concrete strain gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310121871 CN103226013A (en) | 2013-04-10 | 2013-04-10 | Protector for concrete strain gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103226013A true CN103226013A (en) | 2013-07-31 |
Family
ID=48836547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310121871 Pending CN103226013A (en) | 2013-04-10 | 2013-04-10 | Protector for concrete strain gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103226013A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674942A (en) * | 2016-01-04 | 2016-06-15 | 西南交通大学 | Concrete strainmeter subassembly and installation method |
| CN107044836A (en) * | 2017-03-23 | 2017-08-15 | 中铁七局集团西安铁路工程有限公司 | A kind of embedded-type sensor protection device |
| CN115808203A (en) * | 2022-11-24 | 2023-03-17 | 哈尔滨工业大学 | Protection device for pre-buried sensor in concrete and installation method |
-
2013
- 2013-04-10 CN CN 201310121871 patent/CN103226013A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674942A (en) * | 2016-01-04 | 2016-06-15 | 西南交通大学 | Concrete strainmeter subassembly and installation method |
| CN107044836A (en) * | 2017-03-23 | 2017-08-15 | 中铁七局集团西安铁路工程有限公司 | A kind of embedded-type sensor protection device |
| CN115808203A (en) * | 2022-11-24 | 2023-03-17 | 哈尔滨工业大学 | Protection device for pre-buried sensor in concrete and installation method |
| CN115808203B (en) * | 2022-11-24 | 2023-05-23 | 哈尔滨工业大学 | Protection device for embedded sensor in concrete and installation method |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130731 |
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| RJ01 | Rejection of invention patent application after publication |