CN103759708A - Method for measuring gradient of tower - Google Patents
Method for measuring gradient of tower Download PDFInfo
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- CN103759708A CN103759708A CN201310751650.5A CN201310751650A CN103759708A CN 103759708 A CN103759708 A CN 103759708A CN 201310751650 A CN201310751650 A CN 201310751650A CN 103759708 A CN103759708 A CN 103759708A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C1/00—Measuring angles
Abstract
The invention provides a method for measuring gradient of a tower. The method comprises the following steps: setting a plurality of measuring points on the tower, wherein the plurality of measuring pints are arranged on the same level and on the same circumference, the plurality of measuring points form a plurality of measuring lines with the center point on the center shaft of the tower on the same level, and the included angle between two measuring lines is not 180 degrees; measuring a plurality of first displacements generated by the plurality of measuring points in the directions of the plurality of measuring lines, wherein the first displacement is the displacement of the plurality of measuring points relative to the original positions of each measuring point when the tower does not incline; according to the plurality of first displacements, calculating a second displacement of a virtual point in the actual inclination direction of the tower, wherein the virtual point and the plurality of measuring points are located on the same circumference; calculating the gradient according to the second displacement and the height of the plurality of measuring points relative to an inclination reference surface. The measuring manner of the method for measuring the gradient of the tower is simple, complex equipment such as level gauge is not required, and furthermore, the measuring precision of the gradient is improved.
Description
Technical field
The present invention relates to a kind of measuring method, especially a kind of measuring method of degree of tilt of pylon
Background technology
The application increase of high-power wind-driven generator He Di wind speed district aerogenerator is in recent years very fast, and the wheel hub of these blower fans all arranges highlyer, and load is also very large, and this makes blower fan more responsive to the inclination of foundation ring and the pylon body that is connected with foundation ring.For this reason, by after whole assembling, need to measure the degree of tilt of blower fan pylon.The inclination measurement method of prior art is as follows:
Method 1: by a people, at pylon, set up spirit-leveling instrument outward, the flange that the hand-held scale of people observation foundation ring is connected with pylon between gap, by the size variation in this gap, infer the degree of tilt of pylon.But, because gap is wider, cause measuring result error large, simultaneously because wind park wind speed is also very large, be also not easy to measure.
Method 2: set up spirit-leveling instrument and scale by two people in pylon, observation foundation ring and pylon joint flange between gap or observation foundation ring top flange downside or observation pylon at the bottom of flange upside, by the levelness of the measurement size variation in gap or the levelness of foundation ring upper flange or pylon lower flange, measure the degree of tilt of pylon.But owing to there being equipment to stop in pylon, light is dark, be not easy to measure, and there is error in flange itself, and due to factors such as flange introversions, cause the bank error that finally calculates larger.
In sum, inventor is in realizing process of the present invention, find that prior art exists following defect: for the measurement of degree of tilt, it is all the degree of tilt that pylon is calculated in the perpendicular displacement of the connecting portion of the lower flange by the observation upper flange of foundation ring and the bottom of pylon body, but, due to the mounting structure of pylon and environmental factor etc., the extremely difficult measurement of perpendicular displacement, measuring accuracy for perpendicular displacement is just difficult to guarantee, and then also causes missing by a mile of degree of tilt.
Summary of the invention
The object of the present invention is to provide a kind of measuring method of degree of tilt of pylon, to improve the measuring accuracy of degree of tilt.
To achieve these goals, the invention provides a kind of measuring method of degree of tilt of pylon, comprise: a plurality of measurement points are set on pylon, described a plurality of measurement point is in same level and on same circumference, central point on the central shaft of the pylon in described a plurality of measurement point and described same level forms many slotted lines, and at least to have two angles between slotted line be not 180 degree;
Measure a plurality of the first displacements that described a plurality of measurement point produces in the direction of described many slotted lines, described the first displacement is described a plurality of measurement point with respect to the not displacement in the original position of measurement point described in each during run-off the straight of described pylon;
According to described a plurality of the first displacements, the second displacement of the virtual point of calculating in the actual tilt direction of described pylon, described virtual point and described a plurality of measurement point are on described same circumference, described the second displacement is on the straight line forming at described virtual point and described central point, with respect to the not displacement in the original position of described virtual point during run-off the straight of described pylon;
Height according to described the second displacement and described a plurality of measurement point with respect to Tilt Datum Plane face, calculates the degree of tilt of described pylon.
The measuring method of the degree of tilt of pylon of the present invention, the horizontal shift of each measurement point by measure setup on pylon, and then calculate the actual inclination of pylon, compare with the measuring method of prior art, metering system is simpler, without complex apparatus such as level meters, and for the perpendicular displacement of the coupling part of Fundamentals of Measurement ring of the prior art and pylon body, the horizontal shift of measuring each measurement point can obtain higher precision, thus, improved the measuring accuracy of degree of tilt.
Accompanying drawing explanation
By the description of carrying out below in conjunction with accompanying drawing, above and other object of the present invention and feature will become apparent, wherein:
Fig. 1 is the principle schematic one of measuring method of the degree of tilt of the embodiment of the present invention one.
Fig. 2 is the principle schematic two of measuring method of the degree of tilt of the embodiment of the present invention one.
Fig. 3 is the principle schematic three of measuring method of the degree of tilt of the embodiment of the present invention one.
Fig. 4 is the schematic diagram of measurement point set-up mode of measuring method of the degree of tilt of the embodiment of the present invention one.
Fig. 5 is the partial enlarged drawing of measurement point set-up mode of measuring method of the degree of tilt of the embodiment of the present invention one.
Fig. 6 is the schematic diagram of measurement point set-up mode of measuring method of the degree of tilt of the embodiment of the present invention two.
Fig. 7 is the schematic diagram of measurement point set-up mode of measuring method of the degree of tilt of the embodiment of the present invention three.
Embodiment
Below, describe with reference to the accompanying drawings embodiments of the invention in detail.
Overall thought of the present invention is the displacement that a plurality of measurement points by measuring on pylon produce in the horizontal direction, indirectly measures the degree of tilt of pylon.
Measuring principle of the present invention as shown in Figure 1, not during run-off the straight the state of pylon 1 as shown in the rectangular parallelepiped that solid line represents, pylon after run-off the straight is as shown in the tilter that dotted line represents, the vergence direction of the pylon shown in figure is for to be tilted to the right along paper, and degree of tilt is θ.On this pylon, select 1 E, due to pylon run-off the straight, this E point can move to E ' point along horizontal direction, if we can obtain the length of line segment EE ', it is the displacement in the horizontal direction due to tower post tilting of E point,, in the situation that the height H that E is ordered is known, just can obtain degree of tilt θ.But, in actual measurement, be difficult to predict intuitively or judge the actual tilt direction of pylon.Therefore, on pylon, be provided with a plurality of measurement points, by measuring the shift value of a plurality of measurement points, calculate the displacement of the corresponding point in the actual tilt direction of pylon, i.e. the length of line segment EE ' in Fig. 1, and then obtain degree of tilt θ.
By several embodiment, further introduce technical scheme of the present invention below.
Embodiment mono-
The measuring method of the degree of tilt of the pylon of the present embodiment comprises the steps:
Step 1: a plurality of measurement points are set on pylon, a plurality of measurement point are in same level and on same circumference, central point on the central shaft of the pylon in a plurality of measurement points and same level forms many slotted lines, and at least to have two angles between slotted line be not 180 degree; In an embodiment, for convenience of explanation, slotted line is defined as take central point as the ray of starting point through measurement point.
Step 2: measure a plurality of the first displacements that a plurality of measurement points produce in the direction of many slotted lines, the first displacement is a plurality of measurement points with respect to the not displacement in the original position of each measurement point during run-off the straight of pylon.
Step 3: according to a plurality of the first displacements, the second displacement of the virtual point of calculating in the actual tilt direction of pylon, virtual point and a plurality of measurement point are on same circumference, the second displacement is on the straight line forming at virtual point and central point, with respect to the not displacement in the original position of virtual point during run-off the straight of pylon.Virtual point in the present embodiment, corresponding to the E point in above-mentioned Fig. 1.
Step 4: the height according to the second displacement and a plurality of measurement point with respect to Tilt Datum Plane face, calculates the degree of tilt of pylon.
According to above operation, by the horizontal shift of each measurement point on measure setup pylon, can be in the hope of the displacement of the virtual point in the actual tilt direction of pylon, and then can calculate the degree of tilt of pylon, the technical scheme of the displacement of the vertical direction at the flange position being connected with pylon body with Fundamentals of Measurement ring in prior art is compared, reduce measurement difficulty, also improved the measuring accuracy of the degree of tilt of pylon.
Because blower fan is in operational process, load skewness, its vergence direction is unfixing, but, as long as having angle between slotted line is not the second displacement that two measurement points of 180 degree just can calculate the virtual point in the direction of actual tilt arbitrarily of pylon, if these two measurement points and these three points of central point not on same straight line.Because no matter in fact pylon to which direction tilts, can on these two measurement points, produce displacement component, only displacement may be may be just also negative.For convenience of explanation, in this application, with near the direction of central point for just, away from the direction of central point for bearing.By producing displacement component on these two measurement points, i.e. the first displacement, according to geometric relationship, can obtain the second displacement of virtual point.But, in order be better to measure its degree of tilt in the scope of the whole surrounding of pylon, preferably measurement point is arranged as follows: in many slotted lines, the angle that has two slotted lines at least is 90 degree, or have at least three slotted lines to be constructed as follows situation: the angle between the first slotted line and the 3rd slotted line is greater than 90 degree, the second slotted line is between the first slotted line and the 3rd slotted line, and the angle between the second slotted line and the first slotted line and the 3rd slotted line is all less than 90 degree.
Further, after a plurality of measurement points are arranged as above, in the ordinary course of things, the inclination of pylon will cause a plurality of points to be subjected to displacement variation.Therefore, in above-mentioned step 3, can comprise: be chosen in first displacement of same symbol of a plurality of measurement points, come two the first displacements of front two, the angle coming between slotted line corresponding to two the first displacements of front two is below 90 degree; According to two the first displacements that come front two, calculate the second displacement of virtual point, wherein, about the symbol of displacement, as mentioned above, can, with the direction near central point for just, away from central point direction, be negative.
Thus, the set-up mode of the measurement point by above, no matter pylon tilts to that direction, the tilt quantity of pylon can be reflected at least two measurement points well, thus can be easily, carry out in all directions the measurement of the degree of tilt of pylon.In addition, by two the first displacements selecting equidirectional displacement to come front two, calculate, selected the measured value of two measurement points of change in displacement maximum to calculate, now, the actual tilt direction of pylon should be between slotted line corresponding to these two measurement points, thus, can measure more exactly the degree of tilt of pylon.
Below in conjunction with accompanying drawing, further illustrate the measuring principle of the present embodiment, as shown in Figures 2 and 3, annulus sign pylon in figure, fork-shaped on pylon excircle represents selected measurement point, the fork-shaped of center represents central point, filled arrows represents the vergence direction that pylon is possible, and the point shown in square is the virtual point on the possible vergence direction of pylon.In addition, for convenience of explanation, x axle and y axle have been shown in Fig. 2 and Fig. 3.
As shown in Figure 2, in the situation that there are two measurement points (two measurement points shown in figure lay respectively on x axle and y axle), and the angle between the slotted line that these two measurement points and central point form is 90 while spending, according to geometry principle, no matter pylon to which direction tilts, for example, on any one vergence direction in Fig. 2 shown in filled arrows, the second displacement of virtual point all can produce displacement component on x axle and y axle, that is, and and the first displacement of two measurement points in figure.Different according to the region at the vergence direction place of pylon, the symbol of displacement component that projects to x axle and y axle is also different.For example, when region between x axle and the forward of y axle of the vergence direction of pylon, the first displacement of two measurement point generations is all away from central point, i.e. this first displacement be all on the occasion of, when region between the negative sense of x axle and the negative sense of y axle of the vergence direction of pylon, the first displacement that two measurement points produce is all that i.e. this first displacement is negative value near central point.X axle in figure and y axle are to arrange for convenience of explanation, in actual calculating, no matter the first displacement be on the occasion of or negative value, as long as can determine the concrete direction of displacement, by geometric relationship, can both try to achieve the second displacement of the virtual point in the actual tilt direction of pylon.
Generally speaking, when a plurality of measurement points are subjected to displacement, find displacement to change the measurement point that comes front two, according to the displacement of these two measurement points, just can calculate pylon in the second displacement of the virtual point of actual tilt direction.But, if the scope of measurement point distribution is larger, for example, some measurement points are in the front of pylon, and other measurement point is at the back side of pylon, in this case, likely there will be following situation: the first displacement of positive measurement point equals or be substantially equal to the displacement of back side measurement point, only sense of displacement is different, and symbol is different in other words.To this, qualifications above can adding when the first displacement of selecting for calculating: be chosen in the first displacement of a plurality of measurement points, come two the first displacements of front two, and the angle between slotted line corresponding to these two the first displacements is below 90 degree.
It should be noted that, calculating for pylon in the second displacement of the virtual point of actual tilt direction, be not limited to use the first displacement that comes front two, also can use two capable calculating of second shift-in more than measurement point, only, use comes the first displacement of front two and calculates, comparatively simple and convenient.
As shown in Figure 3, Fig. 3 has chosen three measurement points, as long as these three slotted lines corresponding to measurement point have covered the above scope of 90 degree, and a middle slotted line and the angle between other two slotted lines are less than 90 degree, in this case, just the second displacement of the virtual point in the actual tilt direction of pylon can be reflected at least two slotted lines.As shown in Figure 3, in region between x axle and the forward of y axle, in the actual tilt direction of the shown pylon of filled arrows, the second displacement that virtual point produces, will on corresponding the second slotted line of the second measurement point 12 and corresponding the 3rd slotted line of the 3rd measurement point 13, produce displacement component, this displacement component is exactly the first displacement of the second measurement point 12 and the 3rd measurement point 13, and the first displacement that the first displacement that the second measurement point 12 produces and the 3rd measurement point 13 produce is that the second phase shift producing with this virtual point is closed.In the situation that the angle between the second slotted line and the 3rd measurement point 13 is known, as long as record the first displacement of the second measurement point 12 and the first displacement of the 3rd measurement point 13, just can obtain the second displacement that this virtual point produces.In like manner, the second displacement that virtual point in Fig. 3 between the negative sense of x axle and the negative sense of y axle produces, also can on corresponding the first slotted line of the first measurement point 11 and corresponding the second slotted line of the second measurement point 12, produce displacement component, only, in this case, this displacement component is negative value, and the first displacement that the first measurement point 11 and the second measurement point 12 produce is negative value.According to geometrical principle, first displacement that can produce according to the first measurement point 11 and the second measurement point 12 equally calculates the second displacement that virtual point produces.
In the present invention, pylon 1 has comprised pylon body 2 and for the foundation ring 3 of fixed gantry body, as shown in Figure 4 and Figure 5, the bottom of foundation ring is embedded in blower fan concrete foundation 4, and expose on top, and the top of foundation ring is provided with upper flange, this upper flange is connected with the lower flange of the bottom of pylon body, thereby fixed gantry body 2, in Fig. 4 and Fig. 5, is depicted as flange arrangement 5 by whole flange connecting portion.In the present invention, measurement point 6 can be arranged on any position of pylon, both can be arranged on pylon body 2, also can be arranged on the foundation ring 3 being connected with pylon.Preferably, be arranged on the bottom of pylon body 2, or the top that is arranged on foundation ring 3 approaches the position of pylon body 2, be so more convenient to measure.In Fig. 4 and Fig. 5, shown situation is that measurement point 6 is arranged on the foundation ring 3 of pylon.In addition, in the present embodiment, can think the root of pylon be foundation ring 3 bottom, this part has been imbedded in blower fan concrete foundation 4, in this case, as shown in Figure 4 and Figure 5, the height H of measurement point is that measurement point is to the distance bottom of foundation ring 3, in the present embodiment, using foundation ring 3 bottom as Tilt Datum Plane face.
For the displacement measurement of each measurement point, can be in the following way:
On the extended line of slotted line, corresponding to a plurality of measurement points, a plurality of stadimeters are set, at pylon, not under the state of run-off the straight, a plurality of stadimeters equate with the distance between a plurality of measurement points; Obtain the changing value of the detected distance of a plurality of stadimeters, as the first displacement.Stadimeter can be arranged in concrete foundation as shown in Figure 4.Stadimeter is preferably laser range finder.It should be noted that, in an embodiment of the present invention, for the mode of the displacement measurement of each measurement point, be not limited to stadimeter, also can use other displacement detection device of the prior art, as long as the change in displacement of each measurement point can be detected.
Original state as not run-off the straight can be the state after just installing pylon body, also can be the state after pylon top installs blower fan, under original state, corresponding a plurality of measurement points arrange stadimeter, and make each stadimeter survey the sidewall over against pylon, and equate to the distance of each measurement point.Afterwards, after blower fan running, during pylon run-off the straight, just can pass through each stadia surveying to the change in displacement of the measurement point on pylon.
The required instrument of the measuring method of the present embodiment is comparatively simple, for example, only use stadimeter, and do not need the complicated equipment such as spirit-leveling instrument of the prior art, after the good instrument of frame, in the process of measuring, artificially get involved factor few, therefore, measurement operation is comparatively simple, and precision is high.
Embodiment bis-
As shown in Figure 6, in the present embodiment, six measurement points are set on pylon, for example, are respectively 1a, 1b, 1c, 1d, 1e, 1f, the angle between slotted line corresponding to each measurement point is 60 degree, and 6 measurement points are by circumference equal dividing.
In the situation that being provided with six measurement points, when run-off the straight, in coordinate system as shown in Figure 6, with close central point direction, for just, away from central point, be negative.In this case, the step 3 of above-described embodiment one can be specially: select numerical value in three the first positive displacements to come two the first displacements of front two, come two the first displacements of front two according to numerical value, calculate the second displacement of virtual point.Certainly, as the technical scheme being equal to, also can select in three the first negative displacements, two the first displacements (that is, absolute value comes the first displacement of front two) that come front two are calculated.It should be noted that, in the present embodiment, direction is positive and negative just in order to illustrate that technical scheme sets, in actual calculating, the positive negative sense of displacement be can set flexibly as required, the positive negative sense regulation of the present embodiment defined or the regulation of symbol are not limited to.
In fact, the angle needing only between slotted line corresponding to these two the first displacements that come front two is below 90 degree, just can guarantee that the direction of the actual tendency of pylon is between these two slotted lines or between the rightabout extended line of slotted line.
Further, establishing two the first displacements that come front two is △ A and △ B, and the second displacement of virtual point is △ θ, can be specially the second displacement that adopts following formula (1) to calculate virtual point:
After the second displacement of having obtained virtual point is △ θ, further, can establish a plurality of measurement points is H with respect to the height of Tilt Datum Plane face, and the step 4 in above-described embodiment one can be specially and adopt following formula (2) to calculate degree of tilt θ:
θ=Δ θ/H ... formula (2).
The present embodiment, by choosing six measurement points, can detect the inclination situation of pylon in whole circumference range, and by selection numerical value, comes two the first displacements of front two, can more accurately calculate the degree of tilt of pylon.
Embodiment tri-
As shown in Figure 7, in the present embodiment, four measuring point is set, for example, is respectively 2a, 2b, 2c, 2d, the angle between slotted line corresponding to each measurement point is 90 degree, and 4 measurement points are by circumference equal dividing.
In the situation that being provided with four measuring point, according to the x axle of the standard shown in Fig. 7 and y axis coordinate system, these four points all on x axle and y axle, still with towards central point direction for just, away from the direction of central point for negative.When run-off the straight, generally can measure two the first positive displacements and two the first negative displacements, in this case, the step 3 of above-described embodiment one can be specially: second displacement of calculating virtual point according to two the first positive displacements.Certainly, as the technical scheme being equal to, the second displacement that also can select the absolute value of two the first negative displacements to calculate virtual point.
Further, establishing two the first displacements that come front two is that △ A and △ B(can select two the first positive displacements herein as △ A and △ B), the second displacement of virtual point is △ θ, can adopt following formula (3) to calculate the second displacement of virtual point:
In view of cos90 °=0, sin90 °=1, this formula (3) can further be reduced to following formula (4):
After the second displacement of having obtained virtual point is △ θ, further, can establish a plurality of measurement points is H with respect to the height of Tilt Datum Plane face, can use the formula (2) of above-described embodiment two to calculate degree of tilt θ.
The present embodiment, by choosing four measuring point, can detect the inclination situation of pylon in whole circumference range.For above-described embodiment two, measuring counts has reduced, and the quantity of needed stadimeter has also reduced, and measures the degree of tilt of pylon, and can guarantee certain measuring accuracy in more simple mode.
Although represent with reference to preferred embodiment and described the present invention, it should be appreciated by those skilled in the art that in the situation that do not depart from the spirit and scope of the present invention that are defined by the claims, can carry out various modifications and conversion to these embodiment.
Claims (10)
1. a measuring method for the degree of tilt of pylon, is characterized in that, comprising:
A plurality of measurement points are set on pylon, described a plurality of measurement point is in same level and on same circumference, central point on the central shaft of the pylon in described a plurality of measurement point and described same level forms many slotted lines, and at least to have two angles between slotted line be not 180 degree;
Measure a plurality of the first displacements that described a plurality of measurement point produces in the direction of described many slotted lines, described the first displacement is described a plurality of measurement point with respect to the not displacement in the original position of measurement point described in each during run-off the straight of described pylon;
According to described a plurality of the first displacements, the second displacement of the virtual point of calculating in the actual tilt direction of described pylon, described virtual point and described a plurality of measurement point are on described same circumference, described the second displacement is on the straight line forming at described virtual point and described central point, with respect to the not displacement in the original position of described virtual point during run-off the straight of described pylon;
Height according to described the second displacement and described a plurality of measurement point with respect to Tilt Datum Plane face, calculates the degree of tilt of described pylon.
2. measuring method according to claim 1, it is characterized in that, in described many slotted lines, the angle that has two slotted lines at least is 90 degree, or have at least three slotted lines to be constructed as follows situation: the angle between the first slotted line and the 3rd slotted line is greater than 90 degree, the second slotted line is between described the first slotted line and described the 3rd slotted line, and the angle between described the second slotted line and described the first slotted line and described the 3rd slotted line is all less than 90 degree.
3. measuring method according to claim 2, is characterized in that, with the direction near central point for just, away from central point direction, be negative, according to described a plurality of the first displacements, calculate in the step of the second displacement of the virtual point in the actual tilt direction of described pylon, comprising:
Be chosen in first displacement of same symbol of described a plurality of measurement points, come two the first displacements of front two, described in the angle that comes between slotted line corresponding to two the first displacements of front two be below 90 degree;
According to described two the first displacements that come front two, second displacement of calculating described virtual point.
4. measuring method according to claim 3, is characterized in that, described measurement point is six, and the angle between described each slotted line is 60 degree.
5. measuring method according to claim 4, it is characterized in that, described two the first displacements that come front two are △ A and △ B, the second displacement of described virtual point is △ θ, described in basis, come two the first displacements of front two, the step of calculating the second displacement of described virtual point is specially the second displacement that adopts following formula to calculate described virtual point:
6. measuring method according to claim 5, it is characterized in that, described a plurality of measurement point is H with respect to the height of Tilt Datum Plane face, described degree of tilt is θ, the height with respect to Tilt Datum Plane face according to described the second displacement and described a plurality of measurement point, the step of calculating described degree of tilt is specially and adopts following formula to calculate described degree of tilt:
θ=Δθ/H。
7. measuring method according to claim 3, is characterized in that, described measurement point is four, and the angle between described each slotted line is 90 degree.
8. measuring method according to claim 7, it is characterized in that, described two the first displacements that come front two are △ A and △ B, the second displacement of described virtual point is △ θ, described in basis, come two the first displacements of front two, the step of calculating the second displacement of described virtual point is specially the second displacement that adopts following formula to calculate described virtual point:
9. measuring method according to claim 8, it is characterized in that, described a plurality of measurement point is H with respect to the height of Tilt Datum Plane face, described degree of tilt is θ, the height with respect to Tilt Datum Plane face according to described the second displacement and described a plurality of measurement point, the step of calculating described degree of tilt is specially and adopts following formula to calculate described degree of tilt:
θ=Δθ/H。
10. measuring method according to claim 1, is characterized in that, measures the first displacement that described a plurality of measurement point produces in the direction of described slotted line and comprises:
On the extended line of described slotted line, corresponding to described a plurality of measurement points, a plurality of stadimeters are set, at described pylon, not under the state of run-off the straight, described a plurality of stadimeters equate with the distance between described a plurality of measurement points;
Obtain the changing value of the detected distance of described a plurality of stadimeters, as described the first displacement.
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| CN109163698A (en) * | 2018-08-06 | 2019-01-08 | 百度在线网络技术（北京）有限公司 | Building settlement measurement method, device and storage medium |
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