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Method for measuring arch rib axis

A technology of axis and arch rib, applied in the field of measuring the axis of arch rib, can solve the problems such as high requirements for prism placement and inconvenience, and achieve the effects of convenient construction, easy measurement and improved efficiency.

Inactive Publication Date: 2018-11-30
GUANGXI ROAD & BRIDGE ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The elevation is monitored and measured by placing a prism on the tangent line of the arch rib top and perpendicular to the top surface of the arch rib. The axis is monitored and measured by placing a prism on the side of the arch rib and perpendicular to the side of the arch rib. When monitoring and measuring the elevation of the arch rib, the prism The placement of the prism is relatively convenient and simple, and is easy to operate. However, when monitoring and measuring the axis of the arch rib, the placement of the prism requires high requirements. This makes it inconvenient to use a prism to monitor and measure the axis of the arch rib

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for measuring the axis of an arch rib, comprising the steps of:

[0021] (1) select some lengths to be 40cm, diameter is 2.5cm, and thickness is the straight steel pipe of 4mm;

[0022] (2) The left half outer wall of each described steel pipe is painted white with white paint, and the right half outer wall of each described steel pipe is painted red with red paint, and then the white and red intersection of each described steel pipe outer wall Define it as 0 point, and mark 0 point with 0 scale with bright-colored paint, in mm, mark 0 scale to the left as a negative scale number, and 0 scale to the right as a positive scale number to form a number of measuring arch rib axes the sign post;

[0023] (3) Fix some of the signposts at intervals on the side of the arch rib and place them vertically with the side of the arch rib. The end of the signpost marked as the negative scale number is placed downwards, and each section of the arch rib is correspondingly arran...

Embodiment 2

[0025] A method for measuring the axis of an arch rib, comprising the steps of:

[0026] (1) select some lengths to be 50cm, diameter is 3cm, and thickness is the straight steel pipe of 5mm;

[0027] (2) The left half outer wall of each described steel pipe is painted white with white paint, and the right half outer wall of each described steel pipe is painted red with red paint, and then the white and red intersection of each described steel pipe outer wall Define it as 0 point, and mark 0 point with 0 scale with bright-colored paint, in mm, mark 0 scale to the left as a negative scale number, and 0 scale to the right as a positive scale number to form a number of measuring arch rib axes the sign post;

[0028] (3) Fix some of the signposts at intervals on the side of the arch rib and place them vertically with the side of the arch rib. The end of the signpost marked as the negative scale number is placed downwards, and each section of the arch rib is correspondingly arrange...

Embodiment 3

[0030] A method for measuring the axis of an arch rib, comprising the steps of:

[0031] (1) select some lengths to be 60cm, diameter is 3.5cm, and thickness is the straight steel pipe of 6mm;

[0032] (2) The left half outer wall of each described steel pipe is painted white with white paint, and the right half outer wall of each described steel pipe is painted red with red paint, and then the white and red intersection of each described steel pipe outer wall Define it as 0 point, and mark 0 point with 0 scale with bright-colored paint, in mm, mark 0 scale to the left as a negative scale number, and 0 scale to the right as a positive scale number to form a number of measuring arch rib axes the sign post;

[0033] (3) Fix some of the signposts at intervals on the side of the arch rib and place them vertically with the side of the arch rib. The end of the signpost marked as the negative scale number is placed downwards, and each section of the arch rib is correspondingly arran...

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PUM

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Abstract

The invention discloses a method for measuring an arch rib axis, which relates to the technical field of measuring methods. The method for measuring the arch rib axis comprises the following steps: (1) selecting a plurality of steel pipes with length of 40 to 60 cm, diameter of 2.5 to 3.5 cm, and thickness of 4 to 6 mm; (2) painting a left half outer wall of each steel pipe to be white, painting the right half outer wall of each steel pipe to be red, then defining a junction of the white and red areas as a 0 point, and forming a plurality of sign posts for measuring the arch rib axis by adopting 0 point as scale 0, mm as a unit, left side as negative scales and right side as the positive scales; and (3) fixedly installing the plurality of sign posts on the side surface of the arch rib at intervals, wherein each arch rib corresponds to one sign post, after each arch rib is installed, observing the scales on the sign post by using a total station instrument, thus obtaining an axis deviation of the arch rib. The method for measuring the arch rib axis is simple, intuitive, easy in operation, high in accuracy, and capable of improving the efficiency.

Description

technical field [0001] The invention relates to the technical field of measurement methods, in particular to a method for measuring the axis of an arch rib. Background technique [0002] With many advantages such as high strength, good plasticity and toughness, strong deformation resistance, convenient construction, and short construction period, the concrete-filled steel tube arch bridge has developed rapidly in domestic highway bridges and urban bridges. Among them, the span of Luzhou Hejiang Yangtze River Bridge No. 1 has reached 530m. With the continuous increase of the span, the structural system becomes more and more complex, and the construction difficulty is also increasing. Therefore, the linear monitoring of the bridge construction process is becoming more and more important. The construction of concrete-filled steel tube arch bridges mostly adopts the construction method of cable hoisting without brackets. It is difficult to control the linearity of the arch ribs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C15/00
CPCG01C15/00
Inventor 隗磊军韩玉秦大燕王建军蒋严波李彩霞王承亮李明珊唐颖贤郑健孙辉严胜杰
Owner GUANGXI ROAD & BRIDGE ENG GRP CO LTD