The analysis and design of structure of power house of hydropower station

摘要

It is used to use the member system structural kinetic theory which simplifies the space structure into plane structure in structural analysis of powerhouse of hydropower station which is characterized by big tonnage, great span and irregulation. But the underwater structure of powerhouse has the character of great volume and thick cross-section, the ratio of the length of the member to the thickness of crosssection is approximately 3:1 in general. When the thickness exceeds the length to about 1/5, the dimension of member's joint is rather big, so the effect of the increment of stiffness in joint district can not be ignored, therein the shear strain caused by the shear stress inside the members occupies significant portion in total deformation rate. If common frame structural calculation is still used in such structures, the results will arise big deviation according to the real stress status in members, thus creates waste or un-safety. So the author edited computer program used in powerhouse for general purpose, and the matrix analyses in thick cross-section frame of powerhouse structure are carried out also.