Interval response spectrum method for structural seismic resistance analysis

Abstract

The invention discloses an interval response spectrum method for structural seismic resistance analysis. The interval response spectrum method comprises the following steps of: at first, carrying out time-history response analysis on a great amount of actual measurement data of seismic waves, so as to obtain an actual measurement response spectrum model; secondly, taking an envelope including all actual measurement response spectrums and reacting an interval consisting of a maximum value and a minimum value of an earthquake response spectrum by using the envelope; and finally, solving an earthquake response interval of a structure by using an interval response spectrum. The interval response spectrum method provided by the invention can effectively forecast the response interval of the structure under an earthquake load effect, so as to obtain a more reliable structural earthquake response analysis result; and the invention provides a more effective means for the seismic resistance analysis of the structural response spectrum.

Description

technical field [0001] The invention relates to an interval response spectrum curve obtained based on measured seismic wave records and a corresponding structure anti-seismic analysis method, which is especially suitable for effectively evaluating the seismic response of engineering structures. Background technique [0002] Earthquake is a natural disaster that seriously endangers human beings. There are tens of thousands of earthquakes every year all over the world, including dozens of destructive earthquakes. In recent years, many major earthquakes have occurred around the world, including the Wenchuan Earthquake in China, the Yushu Earthquake, the Haiti Earthquake, and the East Japan Earthquake, which have caused very heavy losses of life and property to human beings. Therefore, it is of great practical significance to study the effects of earthquakes on structures, including theoretical analysis, numerical calculations and seismic tests. [0003] The development of stru...

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Problems solved by technology

[0005] However, the structural response calculated by the current response spectrum method is a fixed value, which is convenient for designers to carry out seismic analysis to a certain extent, but in fact the ground motion input is random. For different seismic wave inputs, the actual earthquake of the structure The response cannot be a fixed value, if the earthquake level is certain, its value is likely to fluctuate within a certain range

The emergence of this contradiction shows that the existing response spectrum analysis method is flawed

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