CN218455450U - Monitoring extension bracket for concrete structure surface crack width change - Google Patents
Monitoring extension bracket for concrete structure surface crack width change Download PDFInfo
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- CN218455450U CN218455450U CN202221933536.5U CN202221933536U CN218455450U CN 218455450 U CN218455450 U CN 218455450U CN 202221933536 U CN202221933536 U CN 202221933536U CN 218455450 U CN218455450 U CN 218455450U
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Abstract
The utility model provides a monitoring extension bracket for the width change of a concrete structure surface crack, which comprises two bracket limbs, two sticking parts, two mounting end plates and a vibrating string type crack meter simulation rod, wherein one end of each bracket limb is fixedly connected with the corresponding sticking part, and the other end is connected with the upper part of the corresponding mounting end plate; the two pasting parts are arranged adjacently, and each pasting part is provided with a pasting surface which is arranged upwards; the lower part of each installation end plate is provided with an installation through hole, the two ends of the vibrating wire type crack meter simulation rod are respectively installed in the installation through holes in an adjustable mode, and the vibrating wire type crack meter simulation rod is arranged in parallel with the support limbs. The utility model has the advantages of the theory is clear and definite, convenient operation, accuracy height for crack width change monitoring is more convenient, accurate and high-efficient, can the wide application read in the accurate survey of crack change among the concrete structure test.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to an engineering detection area, concretely relates to monitoring extension support that concrete structure surface crack width changes.
[ background of the invention ]
In the processes of construction, long-term operation and use, and maintenance and management of a concrete structure, a structural crack is the most common and most major defect, and is one of defects which have the greatest influence on the safety and normal use of the structure. How to accurately test the crack width change of the concrete structure member, judge the development condition of the crack and the influence of the crack on the stress safety of the structure is important work in the detection and identification of the concrete structure safety test. Currently, there are two general methods for monitoring the width change of the crack on the surface of the concrete structure: firstly, manual observation is carried out by matching a magnifying lens adopting an optical principle with a graduated scale; and secondly, directly sticking vibrating wire type surface crack meters on two sides of the crack for observation.
The problem that the manual observation that adopts the magnifying glass of optical principle cooperation scale to go on exists: (1) In the measuring process, a detection engineer manually reads the data, and certain artificial errors can exist in several readings of the same person or readings of different persons; (2) Although the same crack is observed at different periods, the crack can hardly be placed at the same position of the crack for measurement, and necessary errors are generated.
The vibration wire type surface crack meter is directly adhered to two sides of the crack for observation, and the problems exist: (1) The two end points of the vibrating wire type surface crack meter are stuck to the two sides of the crack for a certain distance, generally 150mm, so that the concrete deformation value in the measuring distance of the two sides of the crack cannot be eliminated to cause errors, and particularly, the influence of the errors before and after the test with large load action change is more obvious.
[ Utility model ] content
The to-be-solved technical problem of the utility model lies in providing a monitoring extension support of concrete structure surface crack width variation, has advantages such as the theory is clear and definite, convenient operation, accuracy height for crack width variation monitoring is more convenient, accurate and high-efficient, can wide application read in the accurate survey of crack variation among the concrete structure test.
The utility model discloses a realize like this:
a monitoring extension bracket for the width change of a surface crack of a concrete structure comprises two bracket limbs, two sticking parts, two mounting end plates and a vibrating wire type crack meter simulation rod, wherein one end of each bracket limb is fixedly connected with the corresponding sticking part, and the other end of each bracket limb is connected with the upper part of the corresponding mounting end plate; the two pasting parts are arranged adjacently, and each pasting part is provided with a pasting surface which is arranged upwards;
and the lower part of each mounting end plate is provided with a mounting through hole, two ends of the vibrating wire type crack meter simulation rod are respectively and adjustably mounted in the mounting through holes, and the vibrating wire type crack meter simulation rod and the support limb are arranged in parallel.
Furthermore, each pasting surface is a smooth plane.
Furthermore, the outer side surfaces of the two sticking parts which are opposite to each other are smooth planes which are arranged in parallel.
Furthermore, the two sides of the bottom of each mounting end plate are provided with beveling table tops, each beveling table top is provided with a fastening bolt hole, and each fastening bolt hole is communicated to the mounting through hole; each fastening bolt penetrates through the corresponding fastening bolt hole, and the front end of each fastening bolt abuts against the surface of the vibrating string type crack meter simulation rod arranged in the mounting through hole.
Further, the vibrating wire crack meter simulation rod is cylindrical and 12mm in diameter.
Furthermore, the pasting surface is rectangular, the length is 22mm, and the width is 10mm.
The utility model has the advantages of:
the utility model discloses a support limb is fixed in crack measurement station both sides through the portion of pasting, and the crack width change through two support limbs transmission extension to the vibration wire formula crack meter simulation axle on the line, the reading is measured to the rethread change vibration wire formula crack meter, consequently has following several beneficial effect:
(1) The typical errors in two common methods for monitoring the change of the surface crack width of the concrete structure at present are eliminated: fixing a crack width change monitoring point, eliminating errors caused by different crack width measuring positions and eliminating errors caused by concrete deformation values in measuring ranges on two sides of the crack; (2) The monitoring extension bracket extends the crack width, utilizes a vibrating wire type crack meter to measure the length change value of the extension part, namely the crack width change value, and combines the vibrating wire type crack meter to monitor the crack width change with the accuracy of 0.001mm; (3) flexible application to short-term and long-term monitoring: the monitoring extension bracket has good stability in cooperation with the vibrating wire type crack meter, can be used for short-term observation of the crack width change of a concrete structure in test loading, and is also suitable for long-term crack width development change monitoring; (4) the operation is convenient: the monitoring extension support is simple in structure, light in weight, small in size, convenient to install and disassemble and good in practicability. Therefore, the support has the advantages of clear theory, convenience in operation, high accuracy and the like, and can be widely applied to crack change tests of concrete structure tests and monitoring projects.
[ description of the drawings ]
The present invention will be further described with reference to the following examples and drawings.
Fig. 1 is a schematic perspective view of the extension bracket for monitoring the change of the width of the crack on the surface of the concrete structure according to the present invention.
Fig. 2 is a front view of the extension bracket for monitoring the width change of the surface crack of the concrete structure.
Fig. 3 is a schematic diagram of the support limb, the adhering portion and the mounting end plate of the extension support for monitoring the width change of the surface crack of the concrete structure of the present invention.
Fig. 4 is a schematic structural view of an installation end plate of the extension bracket for monitoring the change of the width of the crack on the surface of the concrete structure.
[ detailed description ] A
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings and the detailed description. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
Referring to fig. 1 to 4, the monitoring extension bracket for the width change of the surface crack of the concrete structure of the present invention includes two bracket limbs 1, two sticking portions 2, two mounting end plates 3 and a vibrating string type crack meter simulation rod 4, wherein one end of each bracket limb 1 is fixedly connected to the corresponding sticking portion 2, and the other end is connected to the upper portion of the corresponding mounting end plate 3; the two pasting parts 2 are arranged adjacently, each pasting part 2 is provided with a pasting surface 21, and the pasting surfaces 21 are arranged upwards;
the lower part of each installation end plate 3 is provided with an installation through hole 31, the two ends of the vibrating wire type crack meter simulation rod 4 are respectively installed in the installation through holes 31 in an adjustable mode, and the vibrating wire type crack meter simulation rod 4 and the support limb 1 are arranged in parallel.
In the implementation, a preferred embodiment is as follows: each of the adhesive surfaces 21 is a smooth surface.
In the implementation, a preferred embodiment is as follows: the outer side surfaces of the two sticking parts 2 which are opposite are smooth planes which are arranged in parallel.
In the implementation, a preferred embodiment is as follows: the two sides of the bottom of each mounting end plate 3 are provided with beveling table tops 32, each beveling table top 32 is provided with a fastening bolt hole 33, and each fastening bolt hole 33 is communicated to a mounting through hole 31; each fastening bolt 5 is inserted into the corresponding fastening bolt hole 33, and the tip of each fastening bolt 5 abuts against the surface of the vibrating wire type crack meter simulation rod 4 in the mounting through hole 31.
In the implementation, the preferred embodiment is as follows: the vibrating wire type crack meter simulation rod 4 is cylindrical, the diameter of the rod is 12mm, and the length of the rod is 160mm.
In the implementation, a preferred embodiment is as follows: the sticking surface 21 is rectangular, and has a length of 22mm and a width of 10mm.
In another embodiment of the present invention, the field test process is as follows:
step 1: according to the size of the crack monitoring point, the relative positions of the vibrating wire type crack meter simulation rod 4 and the mounting end plate 3 are adjusted, the distance between the two sticking parts 2 is matched with the size of the crack, and then the vibrating wire type crack meter simulation rod 4 and the mounting end plate 3 are locked through a fastening bolt 5; then, fixing the whole monitoring extension bracket on two sides of a crack monitoring point by using strong glue and abutting against two side edges of the crack through the adhesive surface 21 of the adhesive part 2;
step 2: the vibrating wire type crack meter simulation rod 4 of the monitoring extension bracket is taken down by adjusting a fastening bolt 5, and the replaced vibrating wire type crack meter is installed;
and step 3: reading crack width change values before and after or for multiple times of the vibration wire type crack meter test;
and 4, step 4: after the test is finished, the fastening bolt 5 is adjusted, the vibrating wire type crack meter is taken down, and the support is lightly knocked to lift the adhering part at the crack monitoring point.
The utility model discloses a support limb 1 is fixed in crack measurement station both sides through pasting 2, and crack width changes and draws to 4 axises of vibrating wire formula crack meter analog rod through 1 transmissions of two support limbs, and the reading is measured to the rethread change vibrating wire formula crack meter, consequently has following several beneficial effect:
(1) The typical errors in two common methods for monitoring the change of the surface crack width of the concrete structure at present are eliminated: fixing a crack width change monitoring point, eliminating errors caused by different crack width measurement positions and eliminating errors caused by concrete deformation values in measurement ranges at two sides of a crack; (2) The measurement precision is high, the monitoring extension bracket extends the crack width, the vibration wire type crack meter is utilized to measure the length change value of the extension part, namely the crack width change value, and the precision of the bracket combining with the vibration wire type crack meter to monitor the crack width change is 0.001mm; (3) the method is flexibly suitable for short-term and long-term monitoring: the monitoring extension bracket has good stability in cooperation with the vibrating wire type crack meter, can be used for short-term observation of the crack width change of a concrete structure such as in test loading, and is also suitable for long-term monitoring of the crack width development change; (4) the operation is convenient: the monitoring extension support is simple in structure, light in weight, small in size, convenient to install and disassemble and good in practicability. Therefore, the support has the advantages of clear theory, convenience in operation, high accuracy and the like, and can be widely applied to crack change tests of concrete structure tests and monitoring projects.
Although specific embodiments of the invention have been described herein, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, as equivalent modifications and variations within the spirit of the invention are intended to be covered by the appended claims.
Claims (6)
1. A monitoring extension bracket for the width change of a concrete structure surface crack is characterized in that: the monitoring extension bracket comprises two bracket limbs, two sticking parts, two mounting end plates and a vibrating wire crack meter simulation rod, wherein one end of each bracket limb is fixedly connected with the corresponding sticking part, and the other end of each bracket limb is connected with the upper part of the corresponding mounting end plate; the two pasting parts are arranged adjacently, and each pasting part is provided with a pasting surface which is arranged upwards;
the lower part of each installation end plate is provided with an installation through hole, the two ends of the vibrating wire type crack meter simulation rod are respectively installed in the installation through holes in an adjustable mode, and the vibrating wire type crack meter simulation rod is arranged in parallel with the support limbs.
2. The guiding frame for monitoring the crack width variation on the surface of a concrete structure as claimed in claim 1, wherein: each sticking surface is a smooth plane.
3. The tension bracket for monitoring the crack width variation on the surface of a concrete structure as claimed in claim 1, wherein: the outer side surfaces opposite to the two sticking parts are smooth planes which are arranged in parallel.
4. The tension bracket for monitoring the crack width variation on the surface of a concrete structure as claimed in claim 1, wherein: the two sides of the bottom of each mounting end plate are provided with beveling table tops, each beveling table top is provided with a fastening bolt hole, and each fastening bolt hole is communicated to the mounting through hole; each fastening bolt penetrates through the corresponding fastening bolt hole, and the front end of each fastening bolt abuts against the surface of the vibrating string type crack meter simulation rod arranged in the mounting through hole.
5. The tension bracket for monitoring the crack width variation on the surface of a concrete structure as claimed in claim 1, wherein: the vibrating wire type crack meter simulation rod is cylindrical and 12mm in diameter.
6. The guiding frame for monitoring the crack width variation on the surface of a concrete structure as claimed in claim 1, wherein: the pasting surface is rectangular, the length is 22mm, and the width is 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221933536.5U CN218455450U (en) | 2022-07-26 | 2022-07-26 | Monitoring extension bracket for concrete structure surface crack width change |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221933536.5U CN218455450U (en) | 2022-07-26 | 2022-07-26 | Monitoring extension bracket for concrete structure surface crack width change |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218455450U true CN218455450U (en) | 2023-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221933536.5U Active CN218455450U (en) | 2022-07-26 | 2022-07-26 | Monitoring extension bracket for concrete structure surface crack width change |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218455450U (en) |
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2022
- 2022-07-26 CN CN202221933536.5U patent/CN218455450U/en active Active
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