CN210917499U - Fixing device for steel bar strain gauge - Google Patents
Fixing device for steel bar strain gauge Download PDFInfo
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- CN210917499U CN210917499U CN201921572203.2U CN201921572203U CN210917499U CN 210917499 U CN210917499 U CN 210917499U CN 201921572203 U CN201921572203 U CN 201921572203U CN 210917499 U CN210917499 U CN 210917499U
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- China
- Prior art keywords
- steel bar
- strain gauge
- piece
- bar strain
- pipe section
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 120
- 239000010959 steel Substances 0.000 title claims abstract description 120
- 238000003466 welding Methods 0.000 claims abstract description 35
- 238000009434 installation Methods 0.000 abstract description 13
- 230000003014 reinforcing effect Effects 0.000 abstract description 12
- 238000012544 monitoring process Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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Abstract
The utility model relates to a steel bar strain meter fixing device belongs to geotechnical engineering monitoring technology field. The device comprises a fixing piece I, a steel bar strain gauge positioning piece and a fixing piece II, wherein the steel bar strain gauge is sleeved at the middle part of the steel bar strain gauge positioning piece, the fixing piece I is in threaded connection with an end A of the steel bar strain gauge positioning piece, and an end B of the steel bar strain gauge positioning piece is in threaded connection with the fixing piece II. The utility model discloses a steel bar strainometer fixing device makes the steel bar strainometer simple installation under the condition of not cutting the reinforcing bar, has also avoided welding high temperature to probably lead to the risk that the strain element damaged simultaneously, has formed a good biography power structure, has improved monitoring data's accuracy.
Description
Technical Field
The utility model relates to a steel bar strain meter fixing device belongs to geotechnical engineering monitoring technology field.
Background
The supporting engineering related to the pile foundation, the foundation pit and the like often uses a large number of steel bars and metal structures, and in order to research the stability of the pile foundation and the foundation pit, a steel bar meter and a tested steel bar are installed in a combined mode many times to monitor the stress state of the supporting steel bar, so that the stability of the engineering is further analyzed. In order to obtain a true and reliable measurement value in analytical research, it is necessary to ensure that the reinforcing bar meter and the measured reinforcing bar are integrated, and therefore, the installation of the reinforcing bar meter is extremely important.
However, various problems still exist in the conventional reinforcing steel bar meter installation method, for example, the standard binding wire binding installation method has the problem of insufficient fixing strength although the installation is convenient; the welding method (directly welding the steel bar meter on the structural steel bar) is most widely applied, but has the risk of damage to a strain element caused by high welding temperature; the screwed joint sleeve installation method (the reinforcing bar meter is butted with the measured reinforcing bar through the screwed sleeve) can form a good force transmission structure, but the prefabricated screw threads of the reinforcing bar need to be cut off on site, so that the structure of the main bar is damaged, and the stress strength of the main bar is influenced. Aiming at the problems of complexity, low combination strength, welding high-temperature hazard and the like of field rebar gauge installation, a rebar strain gauge fixing device which is simple in installation structure and accurate and efficient in measurement is urgently needed to be designed.
SUMMERY OF THE UTILITY MODEL
The problem to current bar gauge installation method, the utility model provides a bar gauge fixing device, the utility model discloses a bar gauge fixing device combines welding and screwed joint, makes the bar gauge simple installation under the condition of not cuting the reinforcing bar, has also avoided welding high temperature to probably lead to the risk that the strain element damaged simultaneously, has formed a good biography power structure, has improved the accuracy of monitoring data.
The utility model discloses a solve its technical problem and the technical scheme who adopts is:
the utility model provides a bar strain meter fixing device, includes mounting I1, bar strain meter setting element, mounting II, and 4 covers of bar strain meter are established at bar strain meter setting element 3 middle parts, mounting I1 and bar strain meter setting element 3's end A threaded connection, bar strain meter setting element 3's end B and II threaded connection of mounting.
The fixing piece I1 comprises a welding steel pipe section I6 and an external thread joint I7, the welding steel pipe section I6 and the external thread joint I7 are integrally formed, the bottom surface of the welding steel pipe section I6 is lower than that of the external thread joint I7, an external thread joint II 5 is arranged at an end A of a steel bar strain gauge positioning piece 3, an external thread joint III 10 is arranged at an end B of the steel bar strain gauge positioning piece 3, the external thread joint I7 of the fixing piece I1 is in threaded connection with the external thread joint II 5 of the steel bar strain gauge positioning piece 3 through a thread joint sleeve I2, the fixing piece II comprises a welding steel pipe section II and an external thread joint IV, the welding steel pipe section II and the external thread joint IV are integrally formed, the bottom surface of the welding steel pipe section II is lower than that of the external thread joint IV, and the external thread joint III 10 of the, the bottom surface of the welded steel pipe section I6 of the fixing piece I1, the bottom surface of the steel bar strain gauge 4 and the bottom surface of the welded steel pipe section II of the fixing piece II are located on the same axis of the same plane, and the bottom surfaces of the threaded joint sleeve I2 and the threaded joint sleeve II are higher than the bottom surface of the steel bar strain gauge 4.
Further, the length of external thread joint I7, external thread joint II 5, external thread joint III 10, external thread joint IV all is not less than the length of screwed joint sleeve pipe I2 and screwed joint sleeve pipe II, and screwed joint sleeve pipe I2 is the same with II structures of screwed joint sleeve pipe.
And a steel bar strain gauge cable 8 of the steel bar strain gauge 4 extends outwards to the outside of the pile foundation or the foundation pit.
The mounting and using method of the fixing device of the steel bar strain gauge comprises the following steps:
the steel bar strain gauge is sleeved and fixed in the middle of the steel bar strain gauge positioning piece to form a steel bar gauge, a welding steel pipe section I of a fixing piece I and a welding steel pipe section II of a fixing piece II are welded on a stressed steel bar, when the welding temperature is reduced to a safety value, then the end A of the steel bar strainometer positioning piece is fixedly arranged on the external thread joint I of the fixing piece I through the thread joint sleeve I, the end B of the steel bar strainometer positioning piece is fixedly arranged on the external thread joint IV of the fixing piece II through the thread joint sleeve II to realize the fixed installation of the steel bar meter, because the bottom surfaces of the welded steel pipe section I of the fixing piece I, the steel bar strain gauge and the welded steel pipe section II of the fixing piece II are positioned on the same axis of the same plane, the bottom surfaces of the threaded joint sleeve I and the threaded joint sleeve II are higher than the bottom surface of the steel bar strain gauge, therefore, the bottom surface of the steel bar strain gauge is attached to the stressed steel bar to realize the measurement of stress and strain of the stressed steel bar.
The utility model has the advantages that:
the utility model discloses a steel bar strainometer fixing device combines welding and screwed joint, guarantees the intensity of being surveyed the reinforcing bar under the condition of not cutting the reinforcing bar to enable the reinforcing bar meter and install the suitable position at the required atress reinforcing bar of monitoring, also avoided welding high temperature to probably lead to the risk that the strain element damaged simultaneously, formed a simple structure, superior performance's biography power structure, improved the accuracy of monitoring data.
Drawings
FIG. 1 is a schematic structural view of a fixing device of a steel bar strain gauge;
FIG. 2 is a schematic view of the working state of the fixing device of the steel bar strain gauge;
in the figure: the device comprises a fixing piece I, a 2-screwed joint sleeve I, a 3-steel bar strain gauge positioning piece, a 4-steel bar strain gauge, a 5-external screwed joint II, a 6-welded steel pipe section I, a 7-external screwed joint I, an 8-steel bar strain gauge cable, a 9-measured steel bar and a 10-external screwed joint III.
Detailed Description
The present invention will be further described with reference to the following detailed description.
Example 1: as shown in fig. 1, a fixing device for a steel bar strain gauge comprises a fixing piece I1, a steel bar strain gauge positioning piece and a fixing piece II, wherein a steel bar strain gauge 4 is sleeved in the middle of the steel bar strain gauge positioning piece 3, the fixing piece I1 is in threaded connection with an end A of the steel bar strain gauge positioning piece 3, and an end B of the steel bar strain gauge positioning piece 3 is in threaded connection with the fixing piece II;
the fixing piece I1 comprises a welding steel pipe section I6 and an external thread joint I7, the welding steel pipe section I6 and the external thread joint I7 are integrally formed, the bottom surface of the welding steel pipe section I6 is lower than that of the external thread joint I7, an external thread joint II 5 is arranged at an end A of a steel bar strain gauge positioning piece 3, an external thread joint III 10 is arranged at an end B of the steel bar strain gauge positioning piece 3, the external thread joint I7 of the fixing piece I1 is in threaded connection with the external thread joint II 5 of the steel bar strain gauge positioning piece 3 through a thread joint sleeve I2, the fixing piece II comprises a welding steel pipe section II and an external thread joint IV, the welding steel pipe section II and the external thread joint IV are integrally formed, the bottom surface of the welding steel pipe section II is lower than that of the external thread joint IV, and the external thread joint III 10 of, the bottom surfaces of a welded steel pipe section I6 of the fixing piece I1, the bottom surface of the steel bar strain gauge 4 and the bottom surface of a welded steel pipe section II of the fixing piece II are positioned on the same axis of the same plane, and the bottom surfaces of the threaded joint sleeve I2 and the threaded joint sleeve II are higher than the bottom surface of the steel bar strain gauge 4;
the lengths of the external thread joint I7, the external thread joint II 5, the external thread joint III 10 and the external thread joint IV are not smaller than those of the threaded joint sleeve I2 and the threaded joint sleeve II, and the threaded joint sleeve I2 and the threaded joint sleeve II are the same in structure;
a steel bar strain gauge cable 8 of the steel bar strain gauge 4 extends outwards to the outside of the pile foundation or the foundation pit;
the inner surfaces of the threaded joint sleeve I2 and the threaded joint sleeve II are in threaded communication, the inner diameters of the threaded joint sleeve I2 and the threaded joint sleeve II are the same as the outer diameters of the external thread joint II 5 and the external thread joint III 10 of the steel bar strain gauge positioning piece 3, and the fixing piece I1, the steel bar strain gauge positioning piece and the fixing piece II are connected through the threaded joint sleeve I2 and the threaded joint sleeve II; the material of steel bar strainometer setting element 3, mounting I1, mounting II is the same with the steel bar material of being surveyed.
Example 2: as shown in fig. 2, the installation and use method of the steel bar strain gauge fixing device comprises the following steps:
the steel bar strain gauge is sleeved and fixed in the middle of the steel bar strain gauge positioning piece to form a steel bar gauge, a welding steel pipe section I of a fixing piece I and a welding steel pipe section II of a fixing piece II are welded on a stressed steel bar, when the welding temperature is reduced to a safety value, then the end A of the steel bar strainometer positioning piece is fixedly arranged on the external thread joint I of the fixing piece I through the thread joint sleeve I, the end B of the steel bar strainometer positioning piece is fixedly arranged on the external thread joint IV of the fixing piece II through the thread joint sleeve II to realize the fixed installation of the steel bar meter, because the bottom surfaces of the welded steel pipe section I of the fixing piece I, the steel bar strain gauge and the welded steel pipe section II of the fixing piece II are positioned on the same axis of the same plane, the bottom surfaces of the threaded joint sleeve I and the threaded joint sleeve II are higher than the bottom surface of the steel bar strain gauge, therefore, the bottom surface of the steel bar strain gauge is attached to the stressed steel bar to realize the measurement of stress and strain of the stressed steel bar;
the steel bar strain gauge fixing device combines welding and threaded joint, ensures the strength of the measured steel bar under the condition of not cutting the steel bar, enables the steel bar gauge to be arranged at a proper position for monitoring the required stressed steel bar, avoids the risk that a strain element is damaged due to high welding temperature, forms a force transmission structure with simple structure and excellent performance, and improves the accuracy of monitoring data.
While the present invention has been particularly shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (2)
1. The utility model provides a steel bar strainometer fixing device which characterized in that: the steel bar strain gauge positioning piece comprises a fixing piece I (1), a steel bar strain gauge positioning piece and a fixing piece II, wherein a steel bar strain gauge (4) is sleeved in the middle of the steel bar strain gauge positioning piece (3), the fixing piece I (1) is in threaded connection with an end A of the steel bar strain gauge positioning piece (3), and an end B of the steel bar strain gauge positioning piece (3) is in threaded connection with the fixing piece II; mounting I (1) is including welding steel pipe section I (6), thread connection I (7), welding steel pipe section I (6) is less than the bottom surface of thread connection I (7) with thread connection I (7) integrated into one piece and the bottom surface of welding steel pipe section I (6), the end A of bar strainometer setting element (3) is provided with thread connection II (5), the end B of bar strainometer setting element (3) is provided with thread connection III (10), thread connection I (7) of mounting I (1) are through thread connection sleeve pipe I (2) and thread connection II (5) threaded connection of bar strainometer setting element (3), mounting II is including welding steel pipe section II, thread connection IV, the bottom surface of welding steel pipe section II and thread connection IV integrated into one piece and welding steel pipe section II is less than the bottom surface of thread connection IV, thread connection III (10) of bar strainometer setting element (3) are through thread connection sleeve pipe II and II's outer thread connection sleeve pipe II Threaded connection is adopted to the threaded connector IV, the bottom surfaces of the welded steel pipe section I (6) of the fixing part I (1), the bottom surface of the steel bar strain gauge (4) and the bottom surface of the welded steel pipe section II of the fixing part II are located on the same axis of the same plane, and the bottom surfaces of the threaded connector sleeve I (2) and the threaded connector sleeve II are higher than the bottom surface of the steel bar strain gauge (4).
2. The rebar strain gauge fixing device of claim 1, wherein: external thread joint I (7), external thread joint II (5), external thread joint III (10), the length of external thread joint IV all is not less than threaded joint sleeve pipe I (2) and threaded joint sleeve pipe II's length, and threaded joint sleeve pipe I (2) are the same with threaded joint sleeve pipe II structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921572203.2U CN210917499U (en) | 2019-09-20 | 2019-09-20 | Fixing device for steel bar strain gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921572203.2U CN210917499U (en) | 2019-09-20 | 2019-09-20 | Fixing device for steel bar strain gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210917499U true CN210917499U (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921572203.2U Active CN210917499U (en) | 2019-09-20 | 2019-09-20 | Fixing device for steel bar strain gauge |
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| CN (1) | CN210917499U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432578A (en) * | 2021-07-22 | 2021-09-24 | 中交隧道工程局有限公司 | Sustainable steel bar surface strain gauge fixing device and using method thereof |
| CN117127666A (en) * | 2023-10-27 | 2023-11-28 | 山西机械化建设集团有限公司 | Foundation pile negative friction resistance blocking type test element and mounting method |
-
2019
- 2019-09-20 CN CN201921572203.2U patent/CN210917499U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432578A (en) * | 2021-07-22 | 2021-09-24 | 中交隧道工程局有限公司 | Sustainable steel bar surface strain gauge fixing device and using method thereof |
| CN117127666A (en) * | 2023-10-27 | 2023-11-28 | 山西机械化建设集团有限公司 | Foundation pile negative friction resistance blocking type test element and mounting method |
| CN117127666B (en) * | 2023-10-27 | 2024-01-26 | 山西机械化建设集团有限公司 | Foundation pile negative friction resistance blocking type test element and mounting method |
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