Curved-surface concrete bridge deck joint measurement and control elevation positioning method

Abstract

The invention relates to the field of curved-surface concrete bridge deck construction buildings, in particular to a curved-surface concrete bridge deck joint measurement and control elevation positioning method. According to the method, on the aspect of measurement and positioning, projection segmenting is conducted on the curved surface of a concrete bridge deck in reference to a finite element segmentation method, and through a coordinate plane transformation calculation formula, the spatial elevation of any point on the curved surface can be precisely worked out. Based on the axis, the horizontal projection of the curved surface is divided into a plurality of grids of small specifications, the elevation of the grid joints of the grid is worked out, then surveying and positioning are conducted, and finally the joints are connected to form a smooth spatial curved surface. By the adoption of the method, operation is simple, elevation positioning is very precise, the surveying difficulty and labor intensity can be greatly lowered, the construction progress is accelerated, good conditions are provided for formwork erection, the formwork erection positioning is made to be accurate, and thus the construction quality of the curved-surface concrete bridge deck is guaranteed.

Description

technical field [0001] The invention relates to the construction field of curved concrete bridge decks, in particular to a method for measuring and controlling the elevation of nodes of curved concrete bridge decks based on a finite element segmentation method. Background technique [0002] In recent years, with the development of the construction industry, there are more and more unique curved surface designs, and curved surface buildings are widely used because of their "variable shapes, flexible space applications, and good drainage performance" . At present, due to the difficulty in the construction of curved bridge decks, the requirements for construction are getting higher and higher. Most of them use high-cost steel structures, but it is extremely rare to use concrete. The construction technology of curved concrete bridge deck fills the blank of domestic research in this technical field. This construction technology can not only reduce construction difficulty, incre...

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Problems solved by technology

In the prior art, it is difficult to measure the elevation of the curved concrete bridge deck, and the operation is cumbersome. In the end, inaccurate positionin

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