CN109900184B - Segment dislocation measuring device and method - Google Patents
Segment dislocation measuring device and method Download PDFInfo
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- CN109900184B CN109900184B CN201910276938.9A CN201910276938A CN109900184B CN 109900184 B CN109900184 B CN 109900184B CN 201910276938 A CN201910276938 A CN 201910276938A CN 109900184 B CN109900184 B CN 109900184B
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005259 measurement Methods 0.000 claims abstract description 25
- 238000010276 construction Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Abstract
The invention discloses a device and a method for measuring a duct piece dislocation, wherein the device comprises a first measuring ruler (1) and a second measuring ruler (2), and the first measuring ruler and the second measuring ruler are straight rulers with scales; the 0 scale line end of the first measuring ruler is connected with the 0 scale line end of the second measuring ruler, the included angle between the first measuring ruler and the second measuring ruler is 180 degrees to theta, and the staggering amount a=scale reading L is sin theta. The method comprises the following steps of: attaching the scale mark side of the first measuring ruler to the first duct piece (3); step 2: sliding the first measuring ruler along the first duct piece towards the second duct piece to enable the scale mark side of the second measuring ruler to be in contact with the edge of the upper end of the second duct piece; step 3: the staggering amount a is calculated by the scale reading L. The invention reduces measurement errors and measurement working intensity, provides accurate and timely staggering data for the shield forming tunnel, assists in analyzing the staggering reason and adjusting construction parameters, and provides a front-end basis for the high-quality forming tunnel.
Description
Technical Field
The invention relates to a measuring tool and a measuring method in shield construction, in particular to a device and a method for measuring a segment dislocation.
Background
In the shield construction technology, the quality of a formed tunnel is an important basis for measuring the quality of a main engineering, the quality parameters of the formed tunnel comprise projects such as duct piece water seepage, breakage, dislocation, ellipticity, elevation and horizontal position, and the duct piece dislocation is used as an important acceptance project for acceptance of the formed tunnel, and the 100% qualification rate required by design and specification is required to pass the engineering acceptance. The segment staggering is a dimensional deviation formed between adjacent segments of the same ring or between adjacent segments of the ring after assembly is completed, and factors influencing the size of the staggering are many, for example: the method is characterized in that the method comprises the steps of timely and accurately mastering segment staggering data, such as shield attitude, segment bolt tightening degree, synchronous grouting, stratum water-rich conditions and the like, and is an important basis for analyzing whether each parameter and hidden project of shield construction are qualified.
In the prior art, the shield segment dislocation measuring method mainly adopts a steel plate rule to assist a feeler gauge to measure, and the principle is that the dislocation value is converted into a gap value by using the steel plate rule, and then the gap value is measured by using the feeler gauge, so that the segment dislocation value is obtained. Under the condition that the cambered surfaces of adjacent duct pieces are uneven, the steel plate rule is clung to the raised duct piece cambered surfaces along the direction perpendicular to the circular seam or the longitudinal seam, then the feeler gauge is plugged into a gap between the steel plate rule and the other duct piece cambered surface, and finally the value read by the feeler gauge is the duct piece staggered table value. The prior art metrology tools and methods suffer from the following drawbacks:
1. when the duct piece is misplaced, as the measuring principle of the feeler gauge needs to attach the feeler gauge to the lower duct piece cambered surface, the steel plate gauge is tightly attached to the raised duct piece, but the duct piece is cambered surface and the feeler gauge is linear, so that the duct piece cambered surface and the feeler gauge cannot be tightly attached, and the measuring error is caused; the longer the length of the feeler gauge is, the less tight the fitting is, the larger the error is, the measured data have errors, the measurement is inconvenient, and the operation can be completed by two hands.
2. In the measurement process, the steel plate ruler is needed to be held by one hand, the feeler gauge is needed to be held by one hand, the operation is inconvenient, and the second person is needed to cooperate when the image data is left, so that the labor is consumed.
Disclosure of Invention
The invention aims to provide a device and a method for measuring the dislocation of a segment, which are convenient, quick and simple in measurement work, reduce measurement errors and measurement work intensity, provide accurate and timely dislocation data for a shield forming tunnel, can pointedly assist in analyzing the formation of dislocation reasons, are convenient for timely adjusting construction parameters, determine dislocation remedial measures and provide a front-stage basis for a high-quality forming tunnel.
The invention is realized in the following way:
the utility model provides a section of jurisdiction wrong platform measuring device, includes first measuring tape and second measuring tape, and first measuring tape and second measuring tape are the ruler that has the scale; the 0 scale line end of the first measuring ruler is connected with the 0 scale line end of the second measuring ruler, the included angle between the first measuring ruler and the second measuring ruler is 180 degrees to theta, and the staggering amount a=scale reading L is sin theta.
The first measuring ruler and the second measuring ruler are symmetrical with respect to the connecting end.
θ is set to 5.74 ° such that the staggering amount a=scale reading l×sin5.74 ° =0.1L.
The scale precision of the first measuring ruler and the second measuring ruler is 1mm, and the measurement precision of the staggered platform quantity a is 0.1mm.
A segment dislocation measuring method comprises the following steps:
step 1: attaching the scale mark side of the first measuring ruler to a first duct piece, namely a staggered lower step duct piece;
step 2: sliding the first measuring ruler along the direction of the first duct piece to the second duct piece, namely, the staggered platform protruding duct piece, so that the scale mark side of the second measuring ruler is contacted with the edge of the upper end of the second duct piece;
step 3: and reading the scale reading L through the scale line, and calculating the staggering amount a according to the formula staggering amount a=the scale reading L=sin theta.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention reflects the value of the dislocation through the ratio of the short right-angle side and the long right-angle side or the bevel side of the right-angle triangle, greatly simplifies the measurement process and improves the efficiency and the precision of the measurement work.
2. The invention can adjust the measurement precision by changing the included angle of the two measuring gauges, has wide application range, and the theta angle of the two measuring gauges is preferably 5.74 degrees, so that the measurement precision can be improved to 0.1mm, and an accurate reference basis is provided for shield forming tunnel arrival.
3. The invention adopts two measuring scales with scales, can realize bidirectional measurement, can be used as a common measuring straight scale at the same time, has multiple purposes, and can also use the modified vernier caliper as the measuring scale, thereby being convenient for obtaining materials and having low cost.
The invention uses the trigonometric function principle to directly convert the dislocation value to the right-angle side or the oblique side of the triangle by using the mathematical relationship, can conveniently and directly read, solves the defects of large error, low precision, inconvenient operation, complex tool structure and the like caused by the unsound bonding in the traditional pipe segment dislocation measurement technology, does not need to convert the dislocation value into gap value measurement, reduces the data error caused by the physical conversion of multiple tools, eliminates the error caused by the unsound bonding between a feeler gauge and the pipe segment cambered surface during the measurement, simplifies the operation process of the traditional measurement method, ensures that the shield segment dislocation measurement work is convenient and quick, and can also be adjusted according to different measurement precision requirements.
Drawings
FIG. 1 is a front view of a segment staggering measurement device of the present invention;
FIG. 2 is a schematic diagram of a segment staggering measurement device according to the present invention;
FIG. 3 is a schematic diagram illustrating the operation of the duct piece dislocation measurement method according to the present invention.
In the figure, 1 a first measuring ruler, 2 a second measuring ruler, 3 a first duct piece and 4 a second duct piece.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
Referring to fig. 1, a device for measuring a segment dislocation comprises a first measuring ruler 1 and a second measuring ruler 2, wherein the first measuring ruler 1 and the second measuring ruler 2 are straight rulers with scales; the 0 scale line end of the first measuring ruler 1 is symmetrically connected with the 0 scale line end of the second measuring ruler 2, an included angle between the first measuring ruler 1 and the second measuring ruler 2 is 180 degrees-theta, and the staggering amount a=the scale reading L x sin theta.
The first measuring ruler 1 and the second measuring ruler 2 are symmetrical about the connecting end thereof so as to adapt to the measurement of the dislocation of different directions.
Referring to fig. 2, the principle of the present invention is: in the right triangle ABC, the length of the right angle side BC is set to be a, the angle of the angle CAB is θ, and the trigonometric function relationship between the right angle side BC and the hypotenuse AC can determine that the length of AC is a/sin θ, that is, BC: a/sin θ=1:1/sin θ, i.e., when θ <90 ° is 0 ° < θ, the AC side length is a/sin θ, the perpendicular line length from the point C to the AB side is a, whereas when BC length is a and the angle of the angle CAB is θ (0 ° < θ <90 °), the AC length is a/sin θ, and the AC side is marked with a scale, i.e., the AC reading is L. In actual operation, the extension line of the AB side length is the measuring ruler for attaching the staggered platform lower step duct piece, the AC side length is the measuring ruler for contacting the staggered platform bulge duct piece, and the AC side length value can be directly read out through the scale mark.
When a is fixed, the function image of l=a/sin θ (0 ° < θ <90 °) is a monotonically decreasing function, the function value decreases as θ increases, and when θ=90° is at a minimum, the function value is 1.
Preferably, θ is set to 5.74 °, so that the staggering amount a=the scale reading l×sin5.74 ° =0.1L, that is, when the AC side length reading is 10mm, the staggering amount a is 1mm, and the value of the staggering amount can be obtained through the reading conveniently. The scale precision of the first measuring ruler 1 and the second measuring ruler 2 is 1mm, and the measurement precision of the staggered platform quantity a is 0.1mm.
Referring to fig. 3, a segment dislocation measuring method includes the following steps:
step 1: the scale mark side of the first measuring scale 1 is attached to the first duct piece 3 (namely, the staggered lower step duct piece).
Step 2: sliding the first measuring ruler 1 along the first duct piece 3 towards the second duct piece 4 (namely, staggered protruding duct pieces), so that the scale line side of the second measuring ruler 2 and the second duct piece step 3: and reading the scale reading L through the scale line, and calculating the staggering amount a according to the formula staggering amount a=the scale reading L=sin theta. The unit of the scale reading L is cm, the unit of the staggered platform quantity a is mm, and when the theta is set to be 5.74 degrees, the value of the staggered platform quantity a can be directly read through the scale value by converting the unit.
Examples:
two straight rulers with the scale range of 0-15cm, the precision of 1mm and the width of 35mm are taken as a first measuring ruler 1 and a second measuring ruler 2, the first measuring ruler 1 and the second measuring ruler 2 are symmetrically connected into an integrated structure at the scale mark of 0, the included angle between the first measuring ruler 1 and the second measuring ruler 2 is 174.26 degrees, namely θ=5.74 degrees, the staggered platform quantity a=l=sinθ=0.1L, and the measurement precision of the staggered platform quantity a is 0.1mm. And (3) combining one side of the first measuring ruler 1 with the scale marks on the first duct piece 3, namely the staggered platform lower step duct piece, moving along the first duct piece 3 to the second duct piece 4, namely the staggered platform convex duct piece direction until one side of the second measuring ruler 2 with the scale marks just contacts with the second duct piece 4, reading that the scale mark at the contact point of the second measuring ruler 2 with the second duct piece 4 is 9.1cm, and then the staggered platform quantity a is 9.1mm. When the staggered raised duct piece is positioned at the other side of the staggered lower step duct piece, the symmetry of the invention ensures that the reverse operation flow is unchanged, the second measuring ruler 2 is attached to the first duct piece 3, and the first measuring ruler 1 is contacted with the second duct piece 4.
The foregoing description of the preferred embodiments of the invention is not intended to limit the scope of the invention, and therefore, any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (3)
1. A segment dislocation measuring device is characterized in that: the measuring instrument comprises a first measuring instrument (1) and a second measuring instrument (2), wherein the first measuring instrument (1) and the second measuring instrument (2) are straight instruments with scales; the measuring instrument is characterized in that a 0 scale line end of a first measuring ruler (1) is connected with a 0 scale line end of a second measuring ruler (2), an included angle between the first measuring ruler (1) and the second measuring ruler (2) is 180 degrees to theta, a staggered platform amount a=a scale reading L x sin theta, the scale precision of the first measuring ruler (1) and the second measuring ruler (2) is 1mm, the measurement precision of the staggered platform amount a is 0.1mm, and the first measuring ruler (1) and the second measuring ruler (2) are symmetrical about the connecting end of the first measuring ruler and the second measuring ruler.
2. The segment staggering measurement device of claim 1, wherein: θ is set to 5.74 °, so that the staggering amount a=the scale reading l×sin5.74 ° =0.1L.
3. A method for measuring a segment dislocation measuring apparatus according to claim 1, characterized in that: the method comprises the following steps:
step 1: attaching the scale mark side of the first measuring ruler (1) to a first duct piece (3), namely a staggered lower step duct piece;
step 2: sliding the first measuring ruler (1) along the first duct piece (3) towards the second duct piece (4), namely the staggered raised duct piece direction, so that the scale mark side of the second measuring ruler (2) is contacted with the upper end edge of the second duct piece (4);
step 3: the scale reading L is read through the scale line, and the staggering amount a is calculated according to the formula staggering amount a=the scale reading lxsinθ.
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| CN201910276938.9A CN109900184B (en) | 2019-04-08 | 2019-04-08 | Segment dislocation measuring device and method |
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| CN201910276938.9A CN109900184B (en) | 2019-04-08 | 2019-04-08 | Segment dislocation measuring device and method |
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| CN109900184B true CN109900184B (en) | 2024-04-12 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112504062B (en) * | 2020-12-31 | 2022-08-30 | 郑州一建集团有限公司 | Device for measuring dislocation in and between rings of lining segment with high precision |
| CN112902816B (en) * | 2021-02-05 | 2022-09-06 | 深圳大学 | Tunnel segment dislocation monitoring system and method |
| CN114812361B (en) * | 2022-04-29 | 2024-01-30 | 苏交科集团股份有限公司 | Assembled tunnel joint staggering amount measurement method |
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