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Elastoplastic TFRS and TFRS Analysis Method for Structural Dynamic Analysis

Author: HuangJunJie
Tutor: LuoQiFeng
School: Tongji University
Course: Disaster Prevention and Reduction Engineering and Protective Engineering
Keywords: Performance-based seismic design Time-frequency response spectrum Time-frequency response spectrum method Elastoplastic frequency response spectrum Structural dynamic analysis Modes portfolio
CLC: TU313
Type: Master's thesis
Year: 2006
Downloads: 329
Quote: 1
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Abstract


Ground motion characteristics of three elements: the amplitude spectrum and held, the interaction between the three study any one aspect in isolation are difficult to fully reflect the vibration role in the whole picture. Response spectrum method nowadays is still the structural dynamic analysis of the most widely used analytical methods. However, the traditional response spectrum method, the maximum value of the structure seismic response is only a function of the period, it did not consider holding when the elements of the structure. Unlike traditional response spectrum method, the seismic response of the structure in the frequency response spectrum method mentioned in this article is not only a function of the period, as a function of time. On this point, when the frequency of the response spectrum method can be used to analyze the structure under earthquake cumulative damage effects and failure mechanisms. Although the time-frequency response spectrum method has broad prospects, but the research on it is still relatively scarce, a more comprehensive response to vibration characteristics between the three elements, the paper by more in-depth analysis of the time-frequency response spectrum The proposed structure analysis of time-frequency response spectrum method, trying to establish a more reasonable structural dynamic analysis methods. Points, from the content of this article can be summarized into the following sections: The first chapter describes the background and necessity of research on this topic generated. The second chapter describes the basic concepts of frequency response spectrum, the basic principles and calculation methods to calculate the number of typical seismic waves when the frequency response spectrum, the final analysis of the damping of time and frequency response spectrum. The third chapter describes the elastoplastic frequency response spectrum of basic concepts, basic principles and calculation methods, calculate the the Ninghe wave of elastoplastic frequency response spectrum, the final yield displacement elastoplastic frequency response spectrum analysis. The fourth chapter discusses the frequency response spectrum comparative analysis of the two seismic waves, for example in the calculation of multi-degree of freedom of the seismic response of the elastic system, the traditional response spectrum method and the time-frequency precision reaction degree of freedom elastic system seismic response spectrum method Finally, the frequency response spectrum method based modal combination rule. Chapter summary of some of the paper work, done some research, and future work. The innovation of this paper is summarized as follows: the proposed elastoplastic frequency response spectrum, and gives a general method of calculation for the first time. The first proposed when the structural analysis of the frequency response spectrum method, and when the frequency of the response spectrum method for the analysis of multi-degree of freedom elastic seismic response system, and presents a time to consider modal combination method.

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CLC: > Industrial Technology > Building Science > Building structure > Structure theory to calculate > Structural elasticity and plasticity
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