CN216620927U - Tunnel steel bow member radian is measured and is detained chi - Google Patents
Tunnel steel bow member radian is measured and is detained chi Download PDFInfo
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- CN216620927U CN216620927U CN202122198184.5U CN202122198184U CN216620927U CN 216620927 U CN216620927 U CN 216620927U CN 202122198184 U CN202122198184 U CN 202122198184U CN 216620927 U CN216620927 U CN 216620927U
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Abstract
The utility model relates to a tunnel steel arch radian measuring buckle ruler which comprises a main ruler and an auxiliary ruler vertical to the main ruler, wherein the auxiliary ruler is movably inserted in the middle of the main ruler, the main ruler is fixed in length, and length scales are marked on the auxiliary ruler. The method can be used for detecting the radian of the steel arch frame, can be operated by one person, and has high measuring speed and high measuring precision.
Description
Technical Field
The utility model belongs to the technical field of tunnel construction, relates to machining of a steel arch used for tunnel support, and particularly relates to a measuring tool for measuring radian of a tunnel steel arch.
Background
The processing quality of the primary steel arch of the tunnel directly influences the construction quality of the supporting system. In the actual construction process, sometimes, because of the large deviation between the inner diameter of the arch and the design radius, the stress of the arch is uneven, the deformation of the primary support is too large, the conditions of cracking of the primary support, limit invasion, reduction of bearing capacity or disqualification of a steel bar protective layer are caused, arch replacement treatment is needed, the construction period is delayed, the construction difficulty is large, and the safety risk coefficient is high.
In order to ensure that the quality of the steel arch frame meets the requirement, the steel arch frame needs to be detected after being processed, the common detection mode is that a steel tape measure is adopted to measure the chord length and the chord height of a section of inner arc of the arch frame which takes the arch crown as the center, the actual inner diameter of the arch frame is calculated according to the chord length and the chord height and is compared with the design radius of the arch frame, so that whether the arch frame meets the design requirement or not is judged, and corresponding adjustment is timely made when the deviation from the design value is large.
The problems of the existing detection mode are as follows: the steel tape is adopted to measure with lower accuracy and larger error, and needs two persons to cooperate, thus having lower efficiency.
Disclosure of Invention
The utility model aims to solve the problems and provides a tunnel steel arch radian measurement fastening ruler which is capable of simplifying the measurement process and improving the measurement efficiency and the measurement precision.
The technical scheme of the utility model is as follows:
the utility model provides a chi is detained in measurement of tunnel steel bow member radian which characterized in that: the auxiliary ruler is movably inserted in the middle of the main ruler, the main ruler is fixed in length, and length scales are marked on the auxiliary ruler.
The method can be used for detecting the radian of the steel arch frame, the operation can be realized by one person, the measuring speed is high, and the measuring and calculating time can be saved by about 10 minutes by one steel arch frame compared with the traditional steel tape; the radius error of the steel arch frame calculated according to the measuring result can be controlled within 5 mm, and the method is more accurate than that of a steel tape.
Drawings
Fig. 1 is a schematic diagram of the structure and the using state of the present invention.
Detailed Description
As shown in figure 1, the utility model comprises a main ruler 1 and an auxiliary ruler 2 vertical to the main ruler, wherein the auxiliary ruler 2 is movably inserted in the middle of the main ruler 1, the length of the main ruler is fixed, and length scales are marked on the auxiliary ruler.
When the utility model is implemented, the length of the main ruler is set to 2000 mm; the length of the auxiliary ruler is at least 200mm, and the length scale on the auxiliary ruler is accurate to 0.1-1 mm.
As shown in figure 1, when the arch camber is measured, the front end of the auxiliary ruler 2 is aligned with the center of the inner arc vault of the arch 3, and the two ends of the main ruler 1 are fastened with the inner arc surface of the arch 3. The length of the main ruler is chord length, and the distance from the center of the vault to the main ruler is measured through the auxiliary ruler, namely chord height.
In order to conveniently and rapidly obtain the actual measurement radius of the arc of the arch frame, the arc radius corresponding to 2000mm chord length and various chord heights can be calculated in advance, the chord height corresponding to the 2000mm chord length of the common arch frame is generally between 50 and 110mm, the chord height can be increased by 0.1mm, a comparison table is prepared, and the actual measurement radius can be obtained by directly looking up the table after the chord height is measured.
Claims (1)
1. The utility model provides a chi is detained in measurement of tunnel steel bow member radian which characterized in that: the length scale comprises a main scale and an auxiliary scale perpendicular to the main scale, wherein the auxiliary scale is movably inserted in the middle of the main scale, the main scale is fixed in length, and length scales are marked on the auxiliary scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122198184.5U CN216620927U (en) | 2021-09-10 | 2021-09-10 | Tunnel steel bow member radian is measured and is detained chi |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122198184.5U CN216620927U (en) | 2021-09-10 | 2021-09-10 | Tunnel steel bow member radian is measured and is detained chi |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216620927U true CN216620927U (en) | 2022-05-27 |
Family
ID=81691282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122198184.5U Active CN216620927U (en) | 2021-09-10 | 2021-09-10 | Tunnel steel bow member radian is measured and is detained chi |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216620927U (en) |
-
2021
- 2021-09-10 CN CN202122198184.5U patent/CN216620927U/en active Active
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