Detection method for perpendicularity of pier stand column

Abstract

The invention provides a detection method for perpendicularity of a pier stand column.The method comprises the following steps that any position where a pier can be seen is selected as an observation station point; the average angle gamma 1 of the included angles alpha 1 and beta 1 formed between the horizontal line and observation lines from the observation point to the two side edges of the pier, the point of intersection of the edge of the angle and the outer wall of the pier is the point A, and coordinate values of the point A are measured; a point B is determined on the outer wall of the pier in the same way, and coordinate values of the point B are measured; according to the radius of the cross section of the pier, the circle center O1 and the circle center O2 of the cross sections where the point A and the point B are located are determined; a vertical line is formed from the point O1 to the central axis of a bridge deck, the vertical point of the point O2 on the vertical line is M1, and the perpendicularity of the first pier is obtained through calculation according to the distance between the O1 / O2 and M1 and the perpendicular height difference between the point A and the point B.According to the method, a high-precision total station is adopted for detecting the perpendicularity of the stand column, the space projection of the central axis of a columnar building is obtained through multiple cross sections in a non-contact mode, reliable data is provided for building inclined state evaluation, and basic data is provided for avoiding and correcting stand column inclination.

Description

technical field [0001] The invention relates to the technical field of methods for measuring verticality of columns, in particular, to a method for detecting the verticality of vertical columns of bridge piers. Background technique [0002] For a long time, the verticality detection of bridge pier columns has been a difficult problem. The verticality measurement methods of the column include the method of hanging the vertical line, theodolite method, and the method of relying on the ruler, etc., but the disadvantages are obvious. The vertical line method is greatly affected by the wind and the height of the column, and it cannot measure the vertical column in the water. The theodolite method is difficult to measure the vertical column in the water. And usually only the horizontal offset and slope rate of the feature points can be detected, but the spatial alignment of the central axis of the structure cannot be detected. The ruler method is only suitable for measuring the v...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a detection method for the verticality of the column of the bridge pier, so as to solve the technical problem that the existing measurement technology is not suitable for the bridge pier which is far away from the center of the river surface and is inconvenient to directly contact, and the calculation process is complicated

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