Arch ring compilation method of parabolic double-curvature arch dam

Abstract

The invention provides an arch ring compilation method of a parabolic double-curvature arch dam. On the basis of analysis of double-curvature arch dam basic parameters, based on the powerful parametric modeling function of CATIA software, three-dimensional modeling of the arch dam can be achieved, and dam stress analysis, rendering effect picture, generation of a two-dimensional picture and calculation of work amount and the like are conducted with a three-dimensional model imported into relevant software. The method has the advantages that building of the arch ring of a parabolic double-curvature arch dam completely relies on parametric driving, and adjustment of the arch dam shape can be completed through modification of the basic parameters, so that the modeling and analysis efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower engineering, in particular to a method for editing and drawing arch rings of parabolic hyperbolic arch dams. Background technique [0002] The arch dam is a space shell structure fixed to the bedrock. On the plane, the arch circle is in the shape of an arch convex to the upstream, and the cross section of the arch crown is in the shape of a vertical or convex curve to the upstream. An arch dam that has only horizontal curvature and the upstream surface of each cantilever beam is vertical is called a single-curvature arch dam, and an arch dam that has both horizontal and vertical curvature is called a double-curvature arch dam. [0003] The arch ring type has developed from the early single-centered circular arch to three-centered circular arch, elliptical arch, parabolic arch and logarithmic spiral arch. Elliptical arches, parabolic arches, and logarithmic spiral arches a...

AI Technical Summary

Problems solved by technology

[0004] The shape of the parabolic hyperbolic arch dam is relatively complex, and the conventional modeling method is not rigorous enough, basically relying on the fitting curve modeling

Although it is possible to make a model with a realistic shape and a smooth surface, it is impossible to control the model parameters and accuracy to achieve an effect that is completely consistent with the real thing

For example: according to the coordinates of a certain number of arch circle points, curves are formed by fitting high-order equations, combined to form arch circles, or the upstream and downstream surface arch circles are obtained by offsetting the centerline of the arch dam, but it is not rigorous enough, prone to errors, and cannot generate variables Thickness arch ring

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