Method for quickly and automatically analyzing effective water resistance ratio of piers in river channel

Abstract

The invention discloses a method for quickly and automatically analyzing the effective water resistance ratio of a bridge pier in a river channel, and belongs to the technical field of river dynamicsand hydrodynamic force influence demonstration of wading buildings. The method mainly comprises the following steps: firstly, preprocessing a watercourse shoreline terrain, determining an analysis water level and a reference water passing section, and calculating the total area of the water passing section; secondly, carrying out coordinate transformation by taking the water passing cross sectionas an axis, and projecting the top point of the bridge pier to the water passing cross section; thirdly, calculating the projection area of the bridge pier on the water passing section, calculating the effective water resistance ratio of the bridge pier by combining the total area of the water passing section, and drawing a water resistance section diagram; the method has the advantages that the defects that a method for calculating the effective water resistance ratio of the bridge pier in the river channel is complex in step, low in efficiency, high in accuracy influenced by skill proficiency of calculation personnel and the like are overcome, the method for quickly and automatically analyzing the effective water resistance ratio of the bridge pier in the river channel is provided, automatic calculation of the water resistance ratio of the bridge pier in the river channel is achieved, and efficiency and precision are improved.

Description

technical field [0001] The invention relates to a fast and automatic analysis method for the effective water resistance ratio of bridge piers in a river channel, and belongs to the technical field of river dynamics and hydrodynamic influence demonstration of wading structures. Background technique [0002] With the rapid development of the transportation industry, there are more and more bridge construction projects. These bridge piers in the river channel occupy the cross-section of the river, which has a blocking effect on the water flow. The ratio of the effective area of ​​the cross-section occupied by the bridge piers to the area of ​​the original cross-section is the effective water resistance ratio of the bridge pier. The effective water blocking ratio can quantitatively reflect the resistance of the bridge piers to the flow of water, and can also qualitatively reflect the influence of the bridge piers on the flow dynamics of the river where they are located. It is of...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the calculation method of the effective water resistance ratio of the bridge pier in the river channel, such as complicated steps, low efficiency, and the accuracy is greatly affected by the skill proficiency of...

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