CN103644891A - Method for measuring elevation of top of ultrahigh column - Google Patents

Abstract

The invention relates to a method for measuring the elevation of the top of an ultrahigh column. The method comprises the following steps: (1), measuring an elevation point h on the side wall of the ultrahigh column; (2), building a total station on a point A at a distance from one side of the ultrahigh column, which is provided with the elevation point h, wherein the distance is controlled to be 1.5 times the height of the ultrahigh column; (3), measuring an S1 distance at the bottom of the ultrahigh column along the direction of the total station and determining a point B, controlling the S1 to be 0.2m-0.5m, arranging a prism at the point B, and measuring the horizontal distance S; (4), observing the elevation point h by using the total station, recording a vertical angle alpha1, and recoding a vertical angle alpha2; and (5), measuring the elevation of the top of the ultrahigh column, wherein the elevation H of the top of the ultrahigh column is equal to h+tanalpha2*(S1+S)+/-tanalpha1*(S1+S). According to the method, the working time is shortened, and the work risk is lowered. Meanwhile, the measurement precision is ensured, and the safety environment of work is also improved when manpower and material resources are saved for the project from the perspective of conservation.

Description

The measuring method of superelevation pillar top absolute altitude

Technical field

The invention belongs to measuring method field, the measuring method of especially a kind of superelevation pillar top absolute altitude.

Background technology

At present, the public building large spaces that trend towards, Suresh Kumar more.Present large-scale superelevation pillar is very common and in buildings, play main support effect, and whether the top mark height of pillar reaches particularly important that designing requirement shows.How to height, the absolute altitude at more than 10 meters superelevation pillar tops carries out Measurement accuracy, is a kind of more difficult thing.The high method of top mark of in the past measuring superelevation pillar is mainly to add that by measuring the physical length of pillar determines after the end absolute altitude of pillar, or directly with steel ruler, measures downwards to pillar elevation of bottom from pillar top, determines that the top mark of pillar is high.These two kinds of measuring methods cannot be reacted the top absolute altitude of pillar accurately, and take time and effort, and danger is larger.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art, the measuring method of a kind of superelevation pillar top absolute altitude is provided, this measuring method is simple to operate, time saving and energy saving, safe, can effectively improve measuring accuracy and speed.

The present invention solves its technical matters and is achieved through the following technical solutions:

A measuring method for superelevation pillar top absolute altitude, its cast is contrary to be comprised the steps: as method

(1), on superelevation pillar sidewall, measure the relief h of a 0.5m or 1m;

(2) the A point place that, has a side of relief h to be controlled at 1.5 times of superelevation pillar height along axis direction distance at superelevation pillar sets up total powerstation;

, with superelevation pillar bottom, along total powerstation direction, measure S1 distance and determine B point, S1 is controlled at 0.2m-0.5m, at B point, place sets up prism, with total station survey, goes out total powerstation to the horizontal range S of prism;

, with total powerstation observation relief h, and record vertical angle α 1, keep the horizontal angle of total powerstation constant, observe vertically upward pillar top, record vertical angle α 2;

(5), superelevation pillar top absolute altitude H=h+tan α 2 * (S1+S) ± tan α 1 * (S1+S), the top level measurement of superelevation pillar is complete.

Advantage of the present invention and beneficial effect are:

The present invention has shortened the working time, has reduced work dangerous.And having guaranteed measuring accuracy, is the security context that engineering economy manpower and materials have also improved work from the angle the present invention who saves.

Accompanying drawing explanation

Fig. 1 is instrumentation plan of the present invention (relief h is higher than B point prism);

Fig. 2 is instrumentation plan of the present invention (relief h is lower than B point prism).

Embodiment

Below by specific embodiment, the invention will be further described, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.

A measuring method for superelevation pillar top absolute altitude, its cast is contrary to be comprised the steps: as method

(1), on superelevation pillar sidewall, measure the relief h of a 0.5m or 1m;

(2) the A point place that, has a side of relief h to be controlled at 1.5 times of superelevation pillar height along axis direction distance at superelevation pillar sets up total powerstation;

, with superelevation pillar bottom, along total powerstation direction, measure S1 distance and determine B point, S1 is controlled at 0.2m-0.5m, at B point, place sets up prism, with total station survey, goes out total powerstation to the horizontal range S of prism;

, with total powerstation observation relief h, and record vertical angle α 1, keep the horizontal angle of total powerstation constant, observe vertically upward pillar top, record vertical angle α 2;

(5), superelevation pillar top absolute altitude H=h+tan α 2 * (S1+S) ± tan α 1 * (S1+S), the top level measurement of superelevation pillar is complete.

This Figure of description 1 is top absolute altitude H=h+tan α 2 * (the S1+S)-tan α 1 * (S1+S) of relief h superelevation pillar during higher than B point prism.

This Figure of description 2 is top absolute altitude H=h+tan α 2 * (the S1+S)+tan α 1 * (S1+S) of relief h superelevation pillar during lower than B point prism.

Claims (1)

1. a measuring method for superelevation pillar top absolute altitude, is characterized in that: this cast is contrary to be comprised the steps: as method

(1), on superelevation pillar sidewall, measure the relief h of a 0.5m or 1m;

(2) the A point place that, has a side of relief h to be controlled at 1.5 times of superelevation pillar height along axis direction distance at superelevation pillar sets up total powerstation;

, with superelevation pillar bottom, along total powerstation direction, measure S1 distance and determine B point, S1 is controlled at 0.2m-0.5m, at B point, place sets up prism, with total station survey, goes out total powerstation to the horizontal range S of prism;

, with total powerstation observation relief h, and record vertical angle α 1, keep the horizontal angle of total powerstation constant, observe vertically upward pillar top, record vertical angle α 2;

(5), superelevation pillar top absolute altitude H=h+tan α 2 * (S1+S) ± tan α 1 * (S1+S), the top level measurement of superelevation pillar is complete.

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