Layout method for surveying control network

A technology of measurement control and control network, which is applied in the direction of measuring devices, measuring instruments, surveying and navigation, etc., can solve the problems that the measurement accuracy cannot be guaranteed, and achieve the effects of ensuring measurement accuracy, improving measurement accuracy, and convenient and simple operation

Inactive Publication Date: 2019-03-08
CHINA THIRD METALLURGICAL GRP
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Problems solved by technology

However, the measurement accuracy of this method cannot be guaranteed

Method used

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  • Layout method for surveying control network
  • Layout method for surveying control network
  • Layout method for surveying control network

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Embodiment Construction

[0042] The present invention will be described in detail below in conjunction with the accompanying drawings, but it should be pointed out that the implementation of the present invention is not limited to the following embodiments.

[0043] See Figure 1-Figure 4 , a method for laying out a measurement control network, comprising the following steps:

[0044] 1) Arrangement of control points of the general plane control network

[0045] Use the cross small gantry to control the measured points, and bury prefabricated cement piles on the control points; the prefabricated cement piles are made of reinforced concrete, and the steel bars are steel bars with a diameter of more than 30mm. The cross line is used as a punctuation point, the lower end is bent into a hook shape, and poured into the concrete; the size of the pile top is 150mm×150mm, and the size of the pile bottom is not smaller than the size of the pile top; Before the cement solidifies, use the gantry control to adj...

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Abstract

The invention relates to a layout method for a surveying control network. The layout method comprises the following steps: layout of control points in an overall plane control network: controlling point positions of surveyed points by using a cross-shaped small portal frame, and embedding prefabricated cement columns on the controlled point positions, wherein the prefabricated cement columns are made from deposit concrete of reinforcing steel bars, the reinforcing steel bars are reinforcing steel bars with the diameters of greater than 30 mm, the upper ends of the reinforcing steel bars are rubbed down, cross curves are carved as mark points, the lower ends of the reinforcing steel bars are bent into hooks, the reinforcing steel bars are poured into concrete, and the dimensions of the bottoms of the columns are not smaller than those of the tops of the columns; underground axis setting-out: erecting a theodolite onto the positions of axis control piles on the edges of pits; and measurement of structural engineering on the ground: calculating the X and Y coordinates of the horizontal control points according to X and Y coordinates given in a map, and carrying out re-checking of thecontrol points by using a total station. The layout method has the advantages that the method is convenient and simple in operation and the measurement accuracy is improved. The control piles are firmand reliable and are not influenced by the environment, and the subsequent measurement accuracy is ensured.

Description

technical field [0001] The invention belongs to the field of construction, and in particular relates to a method for laying out a measurement control network. Background technique [0002] Before building construction, it is necessary to carry out on-site measurement, set out the design drawing, retest points and lines, and draw a map. During the measurement process, the layout of the measurement control network and the establishment of the building coordinate system are the main tasks. [0003] According to the construction drawings, the establishment of the coordinate system of the building can be established according to the needs. Each coordinate system corresponds to each monomer to ensure that the measurement of each monomer is independent of each other. Several sets of coordinate systems can be converted to each other, and other coordinate systems can be used. to check each other. [0004] The network shape composed of control points is called the control network, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C15/00
CPCG01C15/00
Inventor 陶佳伟刘晔杨健
Owner CHINA THIRD METALLURGICAL GRP
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