Aseismic Analysis Of High-rise Hydroelectric Power Station Intake Tower

This paper is composed of two parts. One part is the study of the aseismic capability of the high-rise structure in region with high earthquake intensity. The results of different models are compared with each other and the aseismic capability of high-rise intake tower structure is appraised. The other includes the whole stability analysis of the high-rise structure and the real structure stability is appraised. For the more, this paper also studied nonlinear characteristics of the structure stability and some conclusions are summarized. The stability appraising methods are used in practical project design and we conclude that the result and the summary are correct and reliable. Thus the work contribute to simplifying the calculating method and promote the development of the corresponding theory. The main works of this paper are as follows:1. The study of the method of the aseismic analysis. Comparing the results of the different models of spectrum and transient analysis is the main work and explored the research method of high-rise structures in region which is comparatively flexible. The aseismic characteristics of Jilintai intake tower are appraised.2. The stability calculation method of high-rise structures. We put forward some formulations for computing the stability of high-rise structures and APDL program has been made with this theory guiding. So we convert the theory achievement to practical application.3. It is usually supposed that the materials are isotropic and in the elastic-linear status when studying the stability capability. But in fact, the materials especially the concrete is capable of undertaking compression in stead of tension. We programmed to calculate the stability with the nonlinear transient method with the apdl program language that is realized by multiplying a small number to the stiffness matrix of element. Computing the stability coefficient with this method will take less CPU time comparatively. Comparing the result of nonlinear transient and that of the linear elastic, we can get some conclusions. From the calculation result, we conclude that the stability of the high-rise structures should be appraised by two separate standard: the stability coefficient and the rotation angle of the structure.All of work of this paper is combined with the practical project and the research conclusion directed the design and construction of the project. On the other hand, it also promote the corresponding theory.