阅读说明：本技术 一种建筑红线外后视控制点测量方法 (Building infrared rearview control point measuring method ) 是由 张佳盛 陈至亮 陈昆仑 虞卓亮 章宇 于 2021-08-12 设计创作，主要内容包括：本发明提供一种建筑红线外后视控制点测量方法,该方法先选择合适的位置架设全站仪,并精确调平,复核测量点的坐标数据,利用定位控制点引测至建筑红线内；在建筑红线外远处选择一个控制点,并用方位角前方交汇法求出该点的坐标；以建筑红线外的点为后视控制点平面引测；控制网的垂直引测；采用全站仪复测各测量控制点,如有偏差,及时调整。以解决现阶段施工时,不同的专业工种会使用不同的控制点和测量方法,造成测量误差远超规范要求的问题。属于施工测量技术领域。(The invention provides a building infrared line rearview control point measuring method, which comprises the steps of firstly selecting a proper position to erect a total station, accurately leveling, rechecking coordinate data of a measuring point, and guiding and measuring the coordinate data into a building infrared line by using a positioning control point; selecting a control point far outside a building infrared line, and solving the coordinate of the point by using an azimuth angle forward intersection method; taking points outside the building infrared line as rearview control points for plane guidance and measurement; controlling the vertical measurement of the net; and (4) retesting each measurement control point by using a total station, and if the deviation exists, adjusting in time. The problem that during construction at the present stage, different control points and measurement methods can be used by different professional workers, and measurement errors far exceed the standard requirements is solved. Belongs to the technical field of construction measurement.)

1. A building infrared rearview control point measuring method is characterized by comprising the following steps:

1) selecting a proper position to erect the total station, accurately leveling, rechecking the coordinate data of the measuring point, and guiding and measuring the coordinate data to the building red line by using the positioning control point;

2) selecting a control point outside a building red line, and solving the coordinate of the point by using an azimuth angle forward intersection method;

3) taking points outside the building infrared line as rearview control points for plane guidance and measurement;

4) controlling the vertical measurement of the net;

5) and (4) retesting each measurement control point by using a total station, and if the deviation exists, adjusting in time.

Technical Field

The invention relates to a method for measuring a building infrared rearview control point, which is mainly applied to the measurement of an engineering project control network and belongs to the technical field of forward intersection measurement.

Background

Under the environment that the current building modeling is gradually novel, an engineering project is accomplished by a plurality of specialty subcontractors jointly, the control point that the survey and drawing institute provided most damages in the middle of the process of earthwork excavation, and the control point around the foundation ditch along with the excavation of earthwork toward the foundation ditch internal migration, if different professional trades use different control points and measuring method can cause the measuring error to exceed the standard requirement far away, for example, the carpenter team of steel construction and civil engineering, because use different control points, and the route of measurement is different, cause steel column and column template conflict and can not the mould sealing.

Disclosure of Invention

The invention provides a building infrared rearview control point measuring method, which aims to solve the problem that during construction at the present stage, different professional workers use different control points and measuring methods, so that the measuring error is far beyond the standard requirement.

In order to achieve the purpose, the method for measuring the infrared rearview control points of the building is specifically as follows:

1) selecting a proper position to erect the total station, accurately leveling, rechecking the coordinate data of the measuring point, and guiding and measuring the coordinate data to the building red line by using the positioning control point;

2) selecting a control point outside a building red line, and solving the coordinate of the point by using an azimuth angle forward intersection method;

3) taking points outside the building infrared line as rearview control points for plane guidance and measurement;

4) controlling the vertical measurement of the net;

5) and (4) retesting each measurement control point by using a total station, and if the deviation exists, adjusting in time.

Compared with the prior art, the invention can effectively improve the measurement precision, avoid the short-line lengthening line in the measurement process, effectively solve the problem of the displacement of the control point near the foundation pit, greatly improve the positioning measurement precision by using the same control point and measurement method by different professional workers, and is suitable for popularization and application.

Drawings

Fig. 1 is a diagram of arrangement of control points in a building red line.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings, and it should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

Examples

Referring to fig. 1, the embodiment provides a method for measuring a building infrared rearview control point, which is implemented by the following technical scheme:

1) erecting a total station at a proper position, accurately leveling, rechecking coordinate data of a measuring point, and measuring into a building red line (T1, T3, T4, T5, T8 and T9) by using positioning control points (A1, A2 and A3) provided by Shenzhen surveying and mapping institute Limited; (FIG. 1)

2) One point is selected from a high point (the embodiment adopts a roof lightning rod, and other high points with wide vision range) which is more than 500 meters away from the site, and the coordinate (31284.491,160360.131) of the point is obtained by an azimuth forward intersection method, which is detailed in the attached table 1:

TABLE 1 forward intersection method for coordinate

L (distance between two known points) ((D-B) × (D-B) + (E-C) × (E-C)) ^ L^0.5

M (left-hand to right-hand azimuth) ═ atan ((E-C)/(D-B)); m-360 + atan ((E-C)/(D-B)) when the arctangent value is negative; o (left hand included angle) ═ M-F (left hand azimuth)

N (right-hand to left-hand azimuth) ═ atan ((C-E)/(B-D)); n-360 + atan ((C-E)/(B-D)) when the arctangent value is negative; right hand included angle: p ═ G (right hand azimuth) -N

Q (angle of the calculated point) is 180-O (left-hand angle) -P (right-hand angle);

r (distance from left-hand point to the desired point) L × SinP/SinQ;

h (coordinate X of the sought point) ═ B + R × cosF; i (coordinate Y of the calculated point) ═ C + R × sinF;

j1 (average coordinate X of the points sought)_{Flat plate}) ∑ H/7; k1 (average coordinate Y of the points sought)_{Flat plate})＝∑I/7；

J2 (highest lowest X is removed from the coordinates of the point sought)_{Remove the flat}) (H1+ H3+ H4+ H5+ H7)/5; k2 (highest lowest Y is removed from the coordinates of the point sought)_{Remove the flat})＝(I1+I3+I4+I5+I7)/5。

Remarking: b is a known left-hand coordinate X1, C is a known left-hand coordinate Y1, D is a known right-hand coordinate X2, B is a known right-hand coordinate Y2

3) Erecting a total station at any point on the site, and marking out a control line of a measurement control network by taking a lightning rod as a rearview control point;

4) when the project enters into the main construction, a plurality of points are selected on the floor as control points for vertical guiding and measuring, when each layer of construction is carried out, the control points at the bottom layer are guided to the construction layer by using a laser plumb bob instrument.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.