CN112523279B - Auxiliary device for installing strain gauge in concrete - Google Patents
Auxiliary device for installing strain gauge in concrete Download PDFInfo
- Publication number
- CN112523279B CN112523279B CN202110022413.XA CN202110022413A CN112523279B CN 112523279 B CN112523279 B CN 112523279B CN 202110022413 A CN202110022413 A CN 202110022413A CN 112523279 B CN112523279 B CN 112523279B
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- Prior art keywords
- rod
- concrete
- auxiliary
- strain gauge
- strain gauges
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
本发明涉及一种混凝土中安装应变计的辅助装置，设置在混凝土的预制的钢筋架中，包括连接杆和用于安装应变计的安装座，连接杆一端用于固定连接钢筋架，另一端与安装座铰接，应变计的监测方向与该铰接的旋转轴方向平行，使安装座上的应变计在浇注混凝土时随安装座摆动与混凝土充分接触。本发明通过连接杆固定安装在钢筋架上，安装座铰接在连接杆上，应变计的监测方向与该铰接的旋转轴方向平行，使浇注混凝土的过程中，应变计可以保持在监测方向的同时进行摆动，防止应变计跑偏的同时，使混凝土与应变计充分接触。
The invention relates to an auxiliary device for installing strain gauges in concrete, which is arranged in a prefabricated steel bar frame of concrete, and comprises a connecting rod and a mounting seat for installing strain gauges. The mounting seat is hinged, and the monitoring direction of the strain gauge is parallel to the rotation axis direction of the hinge, so that the strain gauge on the mounting seat is fully contacted with the concrete with the swing of the mounting seat when concrete is poured. In the present invention, the connecting rod is fixedly installed on the steel frame, the mounting seat is hinged on the connecting rod, and the monitoring direction of the strain gauge is parallel to the direction of the hinged rotation axis, so that the strain gauge can be kept in the monitoring direction during the process of pouring concrete. Swing to prevent the strain gage from deviating while making full contact between the concrete and the strain gage.
Description
The technical field is as follows:
the invention relates to an auxiliary tool for building construction, in particular to an auxiliary device for mounting a strain gauge in concrete.
Background art:
in the field of civil engineering, the concrete structure is large in size, the internal stress distribution and deformation conditions of the concrete structure seriously affect the use safety of the building, and the safety of lives and properties of residents is also related, so that the concrete structure is important for monitoring the internal stress and strain. Strain gauges are often used in actual engineering as one of the main means of monitoring the internal conditions of concrete. In underground engineering, concrete structures have the characteristic of concealment, and the internal conditions of the concrete structures are harder to know compared with the above-ground structures and are more dependent on the monitoring data of strain gauges. However, due to the complex conditions of the construction site of the underground structure, when the concrete strain is buried, the situations of position deviation and strain gauge damage are more likely to occur, the accuracy of the measurement result is seriously influenced, and the health state of the underground structure is misjudged.
The strain gauge is fixed by tying it on the steel bar or hanging it on the steel bar with binding wire. However, when the strain gauge is bound on the steel bar, the contact between the concrete and the strain gauge is insufficient, so that the strain gauge has initial stress and the strain in the concrete cannot be accurately measured; if the strain gauge is suspended on the reinforcing bar by binding wires, the strain gauge will rotate away from the predetermined position during concrete casting vibration, which is not favorable for analyzing the measured data.
The invention content is as follows:
in order to solve the problems existing in the fixation of the strain gauge in concrete, in particular to solve the problem of the fixation of the strain gauge in an underground concrete structure, the invention provides an auxiliary device for installing the strain gauge in concrete, which is arranged in a prefabricated steel bar frame of the concrete and comprises a connecting rod and an installation seat for installing the strain gauge, wherein one end of the connecting rod is fixedly connected with the steel bar frame, the other end of the connecting rod is hinged with the installation seat, the monitoring direction of the strain gauge is parallel to the direction of a rotating shaft of the hinge, and the strain gauge on the installation seat is enabled to swing along with the installation seat to be fully contacted with the concrete when the concrete is poured.
The adjusting mechanism comprises an auxiliary rod, a sliding rod and a bolt, wherein the lower end of the auxiliary rod is provided with a connecting hook, and the sliding rod is used for placing the adjusting structure on the reinforcing steel bar frame; the sliding rod is provided with a threaded hole matched with the bolt, the bolt is sleeved in the threaded hole in a penetrating way, and the sliding rod can be connected to the auxiliary rod in a sliding way and can be fixed on the auxiliary rod through the bolt; the connecting rod is provided with a connecting hole matched with the connecting hook, and the adjusting mechanism is detachably connected to the connecting rod through the matching of the connecting hook and the connecting hole.
Further, the length direction of the sliding rod is perpendicular to the length direction of the auxiliary rod.
Furthermore, the auxiliary rod is provided with a scale bar in the sliding range of the sliding rod.
Further, the connecting rod includes sill bar and at least one extension rod, and sill bar one end is articulated the mount pad, each extension rod can dismantle the connection respectively and be connected at the sill bar other end, and each extension rod can dismantle the connection each other.
Further, the bottom rod other end is equipped with the external screw thread, and each extension rod at least one end is equipped with the external screw thread to be equipped with the nut of external screw thread adaptation, make bottom rod and each extension rod can dismantle the connection through the cooperation of nut and external screw thread.
Furthermore, the mounting seat comprises two fixing plates arranged in parallel and a connecting plate connected with the two fixing plates, mounting holes for mounting the strain gauge are formed in the two fixing plates, and the connecting plate is hinged with the connecting rod.
Furthermore, a rubber pad matched with the strain gauge is arranged in the mounting hole.
The invention is fixedly arranged on the reinforcing steel bar frame through the connecting rod, the mounting seat is hinged on the connecting rod, and the monitoring direction of the strain gauge is parallel to the direction of the hinged rotating shaft, so that the strain gauge can swing while keeping the monitoring direction in the process of pouring concrete, and the concrete is fully contacted with the strain gauge while the strain gauge is prevented from deviating.
The invention can temporarily support when welding the connecting rod through the adjusting mechanism, and the lengths of the connecting rod and the auxiliary rod can be adjusted, thereby being beneficial to the installation of the strain gauge under various conditions.
Description of the drawings:
FIG. 1 is a schematic view of an embodiment of the present invention;
FIG. 2 is a schematic view of an installation according to an embodiment of the present invention;
FIG. 3 is a schematic view of the second embodiment of the present invention;
FIG. 4 is a schematic view of an adjusting mechanism according to a second embodiment of the present invention;
in the figure: 1. a connecting rod; 11. connecting holes; 12. a bottom bar; 13. an extension pole; 14. a nut; 2. a strain gauge; 3. a mounting seat; 31. a fixing plate; 32. a connecting plate; 33. mounting holes; 34. a rubber pad; 4. a reinforcing steel bar frame; 5. an auxiliary lever; 51. a connecting hook; 6. a slide bar; 7. and (4) bolts.
The specific implementation mode is as follows:
the first embodiment is as follows:
as shown in fig. 1 and 2, the auxiliary device of this embodiment is disposed in a prefabricated steel bar frame 4 of concrete, and includes a connecting rod 1 and a mounting seat 3 for mounting the strain gauge 2, wherein one end of the connecting rod 1 is used for fixedly connecting the steel bar frame 4, and is usually welded to the steel bar frame 4, and the other end is hinged to the mounting seat 3.
The mounting seat 3 may include two fixing plates 31 arranged in parallel and a connecting plate 32 connecting the two fixing plates 31, the two fixing plates 31 are provided with mounting holes 33, the strain gauges 2 are mounted in the two mounting holes 33, and the connecting plate 32 is hinged to the connecting rod 1. A rubber pad 34 fitted with strain gauge 2 may be further provided in mounting hole 33 to facilitate mounting of strain gauge 2. The strain gauge is mounted on the mount base 3, so that the concrete is less obstructed when passing through the strain gauge 2, and the concrete is sufficiently in contact with the strain gauge 2.
According to the invention, the connecting rod 1 is fixedly arranged on the reinforcing steel bar frame 4, the mounting base 3 is hinged on the connecting rod 1, and the monitoring direction of the strain gauge 2 is parallel to the direction of the hinged rotating shaft, so that the strain gauge 2 can swing while keeping the monitoring direction in the process of pouring concrete, and the strain gauge 2 is prevented from deviating and the concrete is fully contacted with the strain gauge 2.
Example two:
as shown in fig. 3 and 4, in this embodiment, on the basis of the first embodiment, the adjusting mechanism further includes an auxiliary rod 5, a sliding rod 6 and a bolt 7, the lower end of the auxiliary rod 5 is provided with a connecting hook 51, the sliding rod 6 is used for placing the adjusting structure on the steel bar frame 4, and for the convenience of placement, the length direction of the sliding rod 6 is perpendicular to the length direction of the auxiliary rod 5. The slide bar 6 is provided with a threaded hole matched with the bolt 7, the bolt 7 is sleeved in the threaded hole in a penetrating manner, the slide bar 6 is provided with a hole matched with the auxiliary bar 5, the auxiliary bar 5 is sleeved on the auxiliary bar 5 in a sliding manner through the hole, and the slide bar 6 can be fixed on the auxiliary bar 5 through screwing the bolt 7. The connecting rod 1 is provided with a connecting hole 11 matched with the connecting hook 51, and the adjusting mechanism is detachably connected to the connecting rod 1 through the matching of the connecting hook 51 and the connecting hole 11. The adjusting mechanism is placed on the reinforcing steel bar frame 4 and connected with the connecting hole 11 through the connecting hook 51, so that the auxiliary device keeps a fixed angle to be convenient for welding.
Still can set up the scale strip at the slip scope of slide bar 6 on auxiliary rod 5, make slide bar 6 can carry out accurate location at the slip in-process, conveniently weld according to the angle of predetermineeing.
The connecting rod 1 can be a rod with adjustable length, and specifically can be a rod comprising a bottom rod 12 and at least one extension rod 13, wherein one end of the bottom rod 12 is hinged to the mounting base 3, each extension rod 13 is detachably connected to the other end of the bottom rod 12, and each extension rod 13 can be detachably connected to each other. Specifically, the other end of the bottom rod 12 is provided with an external thread, at least one end of each extension rod 13 is provided with an external thread, and a nut 14 matched with the external thread is arranged, so that the bottom rod 12 and each extension rod 13 can be detachably connected through the matching of the nut 14 and the external thread. Through extension rod 13 or a plurality of extension rod 13 of different length, can change the length of connecting rod 1 as required, conveniently carry out the installation of strainometer 2.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110022413.XA CN112523279B (en) | 2021-01-08 | 2021-01-08 | Auxiliary device for installing strain gauge in concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110022413.XA CN112523279B (en) | 2021-01-08 | 2021-01-08 | Auxiliary device for installing strain gauge in concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112523279A CN112523279A (en) | 2021-03-19 |
| CN112523279B true CN112523279B (en) | 2022-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110022413.XA Active CN112523279B (en) | 2021-01-08 | 2021-01-08 | Auxiliary device for installing strain gauge in concrete |
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| Country | Link |
|---|---|
| CN (1) | CN112523279B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946250A (en) * | 2021-04-09 | 2021-06-11 | 华侨大学 | Auxiliary mounting bracket for string type strain gauge |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1006478A (en) * | 1963-10-02 | 1965-10-06 | Polska Akedemia Nauk Inst Pods | Improvements in or relating to concrete probes |
| CN105674942A (en) * | 2016-01-04 | 2016-06-15 | 西南交通大学 | Concrete strainmeter subassembly and installation method |
| CN207585577U (en) * | 2017-10-30 | 2018-07-06 | 中铁第一勘察设计院集团有限公司 | A kind of device for the installation embedded type concrete strain gauge on tunnel surrounding |
| CN207619965U (en) * | 2017-11-01 | 2018-07-17 | 中铁隧道集团二处有限公司 | A kind of soil pressure cell fixing device |
| CN208296748U (en) * | 2018-06-25 | 2018-12-28 | 成都安岩物联科技有限公司 | A kind of strain gauge |
| CN210773998U (en) * | 2019-06-17 | 2020-06-16 | 贵州鼎盛建材实业有限公司 | Concrete strainometer protective cradle |
| CN210922573U (en) * | 2019-12-27 | 2020-07-03 | 招商局重庆公路工程检测中心有限公司 | Fixing device of concrete internal strain gauge |
-
2021
- 2021-01-08 CN CN202110022413.XA patent/CN112523279B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1006478A (en) * | 1963-10-02 | 1965-10-06 | Polska Akedemia Nauk Inst Pods | Improvements in or relating to concrete probes |
| CN105674942A (en) * | 2016-01-04 | 2016-06-15 | 西南交通大学 | Concrete strainmeter subassembly and installation method |
| CN207585577U (en) * | 2017-10-30 | 2018-07-06 | 中铁第一勘察设计院集团有限公司 | A kind of device for the installation embedded type concrete strain gauge on tunnel surrounding |
| CN207619965U (en) * | 2017-11-01 | 2018-07-17 | 中铁隧道集团二处有限公司 | A kind of soil pressure cell fixing device |
| CN208296748U (en) * | 2018-06-25 | 2018-12-28 | 成都安岩物联科技有限公司 | A kind of strain gauge |
| CN210773998U (en) * | 2019-06-17 | 2020-06-16 | 贵州鼎盛建材实业有限公司 | Concrete strainometer protective cradle |
| CN210922573U (en) * | 2019-12-27 | 2020-07-03 | 招商局重庆公路工程检测中心有限公司 | Fixing device of concrete internal strain gauge |
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| Publication number | Publication date |
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| CN112523279A (en) | 2021-03-19 |
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Address after: 223800 No.153, Hongzehu Road, Suqian City, Jiangsu Province Patentee after: Suqian High Speed Railway Construction Development Co.,Ltd. Patentee after: CCCC Tunnel & Bridge (Nanjing) Technology Co.,Ltd. Patentee after: HOHAI University Address before: 223800 No.153, Hongzehu Road, Suqian City, Jiangsu Province Patentee before: Suqian High Speed Railway Construction Development Co.,Ltd. Patentee before: CCCC Nanjing Traffic Engineering Management Co.,Ltd. Patentee before: HOHAI University |