CN204422109U - Device for monitoring concrete stress - Google Patents
Device for monitoring concrete stress Download PDFInfo
- Publication number
- CN204422109U CN204422109U CN201520143209.3U CN201520143209U CN204422109U CN 204422109 U CN204422109 U CN 204422109U CN 201520143209 U CN201520143209 U CN 201520143209U CN 204422109 U CN204422109 U CN 204422109U
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- Prior art keywords
- bar
- concrete
- stress
- monitoring
- reinforcing steel
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 25
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 30
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000002787 reinforcement Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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Abstract
The utility model discloses a device for monitoring concrete stress aims at providing a convenient to use, can directly carry out concrete stress real-time supervision's the device that is used for monitoring concrete stress. The reinforcing steel bar gauge comprises a reinforcing steel bar gauge, two reinforcing steel bars welded at two ends of the reinforcing steel bar gauge respectively, and at least one auxiliary inserted bar obliquely arranged for supporting the reinforcing steel bars; during installation, the upper end of the auxiliary dowel bar is fixedly connected with the rod part of the reinforcing steel bar, and the lower end of the auxiliary dowel bar is inserted into concrete. The utility model discloses a arrange the bar meter in dam concrete, utilize the bar stress calculation to obtain the bar strain, warp unanimously with concrete deformation according to the reinforcing bar with the position to utilize the bar strain calculation to obtain concrete stress, the device can the direct monitoring concrete compressive stress and tensile stress, not only measure simple to use, the monitoring result is accurate reliable moreover.
Description
Technical field
The utility model relates to concrete stress monitoring technical field, especially relates to a kind of device for monitoring concrete stress.
Background technology
China's hydroelectric development is in recent years particularly rapid, builds successively with a collection of concrete dam that Three Gorges Dam (height of dam 181m), Jinsha jiang River xiluodu arch dam (height of dam 285.5m), Lancang River Xiaowan Arch dam (height of dam 294.5m) etc. are representative.Concrete stress monitoring is the important monitoring project of High Concrete Dam, due to the complicacy of concrete stress monitoring problem, also not completely the same in the understanding of monitoring technology and relevant monitoring instrument so far.Current dam concrete stress monitoring is mainly through strainometer (group) monitoring strain, then concrete stress is calculated according to creep test achievement, but there are problems in the method, if fitting formula of creeping is based on experimental formula, there is creep test indoor comparatively large with outdoor result gap, and amount of calculation is large.Built many concrete dams, due to correlation technique or problem of management, all fail effectively to calculate concrete stress.On the other hand, correlative study person develops the pressure cell directly measuring concrete compressive stress, but pressure cell can not survey concrete pulling stress.
Utility model content
The utility model overcomes shortcoming of the prior art, providing a kind of easy to use, directly can carrying out the device for monitoring concrete stress of concrete stress Real-Time Monitoring.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
For monitoring a device for concrete stress, vertical Embedded installation is among concrete; It comprises reinforcing rib meter, two reinforcing bars being welded in reinforcing rib meter two ends respectively, and at least one auxiliary joint bar be obliquely installed for spacer bar; During installation, the upper end of described auxiliary joint bar is fixedly connected with reinforcement rod portion, and lower end is inserted in concrete.
Preferably, described reinforcing bar length is 1m.
Preferably, described auxiliary joint bar is connected with reinforced-bar binding by steel wire.
Preferably, described auxiliary joint bar is three.
Compared with prior art, the utility model tool has the following advantages:
The utility model by arranging reinforcing rib meter in dam concrete, utilize reinforcement stresses to calculate and obtain reinforcing bar strain, consistent with concrete deformation according to the distortion of same position reinforcing bar, thus utilize reinforcing steel strain gauge calculation to obtain concrete stress, this device can directly monitor concrete compressive stress and tension, not only measure and use simply, and monitoring result accurately and reliably.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not paying the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
For monitoring the device of concrete stress shown in Fig. 1, vertical Embedded installation is among concrete 10; It comprises reinforcing rib meter 1, two reinforcing bars 2 being welded in reinforcing rib meter 1 two ends respectively, and an auxiliary joint bar 3 be obliquely installed for spacer bar 2; During installation, the upper end of described auxiliary joint bar 3 is fixedly connected with reinforcing bar 2 bar portion, and lower end is inserted in concrete 10.
As preferred technical scheme, described reinforcing bar 2 length is 1m.Described auxiliary joint bar 3 to be bundled with reinforcing bar 2 by steel wire and is connected.Described auxiliary joint bar 3 is three, supports more stable, obviously also can according to concreting occasion, adopts two or more auxiliary joint bar.
When installing and using, reinforcing rib meter range is selected according to field of load on xoncrete structure, at reinforcing rib meter two ends, weld length is the supporting reinforcing bar of 1m respectively, the reinforcing bar of welded reinforcement meter is properly transported to working-yard, put a little by design attitude, reinforcing rib meter is vertically arranged, and adopts auxiliary joint bar to fix, and progressively covers with concreting; After reinforcing rib meter installs, should do visible marking, before building concrete, application tarpaulin hides, in order to avoid sunlight exposure, drenches with rain and pollutes.Concrete warehousing will away from instrument, should apart from beyond reinforcing rib meter 0.5m or 1m when vibrator vibrates, depending on vibrator model.Vibrator directly can't be inserted in and be welded with on the reinforcing bar of reinforcing rib meter.
The utility model by arranging reinforcing rib meter in dam concrete, utilize reinforcement stresses to calculate and obtain reinforcing bar strain, consistent with concrete deformation according to the distortion of same position reinforcing bar, thus utilize reinforcing steel strain gauge calculation to obtain concrete stress, this device can directly monitor concrete compressive stress and tension, not only measure and use simply, and monitoring result accurately and reliably.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1., for monitoring a device for concrete stress, vertical Embedded installation is among concrete; It is characterized in that: comprise reinforcing rib meter, two reinforcing bars being welded in reinforcing rib meter two ends respectively, and at least one auxiliary joint bar be obliquely installed for spacer bar; During installation, the upper end of described auxiliary joint bar is fixedly connected with reinforcement rod portion, and lower end is inserted in concrete.
2. according to claim 1 for monitoring the device of concrete stress, it is characterized in that: described reinforcing bar length is 1m.
3. according to claim 1 for monitoring the device of concrete stress, it is characterized in that: described auxiliary joint bar is connected with reinforced-bar binding by steel wire.
4. arbitrary described for monitoring the device of concrete stress according to claim 1-3, it is characterized in that: described auxiliary joint bar is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520143209.3U CN204422109U (en) | 2015-03-13 | 2015-03-13 | Device for monitoring concrete stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520143209.3U CN204422109U (en) | 2015-03-13 | 2015-03-13 | Device for monitoring concrete stress |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204422109U true CN204422109U (en) | 2015-06-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520143209.3U Active CN204422109U (en) | 2015-03-13 | 2015-03-13 | Device for monitoring concrete stress |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204422109U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116133A (en) * | 2015-03-13 | 2015-12-02 | 中国电建集团昆明勘测设计研究院有限公司 | Device and method for monitoring concrete stress |
| CN106768552A (en) * | 2016-12-21 | 2017-05-31 | 中国建筑第四工程局有限公司 | The method and its detecting instrument of a kind of late poured band structure internal force detection |
| CN107576436A (en) * | 2017-09-12 | 2018-01-12 | 中国水利水电科学研究院 | Concrete stress monitoring device and method |
-
2015
- 2015-03-13 CN CN201520143209.3U patent/CN204422109U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116133A (en) * | 2015-03-13 | 2015-12-02 | 中国电建集团昆明勘测设计研究院有限公司 | Device and method for monitoring concrete stress |
| CN106768552A (en) * | 2016-12-21 | 2017-05-31 | 中国建筑第四工程局有限公司 | The method and its detecting instrument of a kind of late poured band structure internal force detection |
| CN107576436A (en) * | 2017-09-12 | 2018-01-12 | 中国水利水电科学研究院 | Concrete stress monitoring device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |