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Methods of calculating the skin plates on gates at hydraulic structures
Conclusions 1. Gate skin should be calculated on the basis of the elementary theory of plates, the practical methods of which are presently given in many handbooks, and since the skin is separated by walls into panels with a ratio of sides greater than 2, Bubnov's criterion can be used for estimating the limits of applicability of the theory of perfectly rigid plates. 2. The use of Bach's method confuses the character of the stressed state and does not lead to a correct determination of the values of stresses and position of the calculated sections. The difference in the values of stresses determined by Bach's method and experimentally reaches 50%. 3. The support conditions of the skin panels should be referred to rigid clamping in all cases when the edge is not the boundary of the outer contour of the gate. In that case, if the load acts only on one side of the supporting edge, then such a support is referred to a free support, i.e., not preventing rotation of the plate about the line of support. In special cases where the possibility of plate rotation about the line of support is limited designwise, yielding or the coefficient of the support couple ϰ should be determined by special calculation.
Methods of calculating the skin plates on gates at hydraulic structures
Conclusions 1. Gate skin should be calculated on the basis of the elementary theory of plates, the practical methods of which are presently given in many handbooks, and since the skin is separated by walls into panels with a ratio of sides greater than 2, Bubnov's criterion can be used for estimating the limits of applicability of the theory of perfectly rigid plates. 2. The use of Bach's method confuses the character of the stressed state and does not lead to a correct determination of the values of stresses and position of the calculated sections. The difference in the values of stresses determined by Bach's method and experimentally reaches 50%. 3. The support conditions of the skin panels should be referred to rigid clamping in all cases when the edge is not the boundary of the outer contour of the gate. In that case, if the load acts only on one side of the supporting edge, then such a support is referred to a free support, i.e., not preventing rotation of the plate about the line of support. In special cases where the possibility of plate rotation about the line of support is limited designwise, yielding or the coefficient of the support couple ϰ should be determined by special calculation.
Methods of calculating the skin plates on gates at hydraulic structures
Prostak, V. F. (author)
Hydrotechnical Construction ; 12 ; 249-254
1978-03-01
6 pages
Article (Journal)
Electronic Resource
English
Methods of calculating the skin plates on gates at hydraulic structures
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