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Basic Studies on Optimization Method of Seismic Fortification Criterion of Buildings

Author: LuoYan
Tutor: FengQiMin
School: Ocean University of China
Course: Disaster Prevention and Reduction Engineering and Protective Engineering
Keywords: Fortification standards Probability of exceedance Seismic risk Failure probability model Estimated economic loss Personnel mortality
CLC: TU352.11
Type: Master's thesis
Year: 2009
Downloads: 28
Quote: 2
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Abstract

From the status quo of China and the world earthquake disaster reduction, universal to take measures to strengthen the construction and emergency command ability to resist earthquake disaster, but China's economic strength determines the inputs can not be unlimited. Faced with this dilemma, we should seek a minimum investment in a socially acceptable level of safety on the economy, have found an optimal balance point between earthquake damage and seismic inputs, we are able to maximize the satisfaction of the owners of the building structure and the dual demands of society. This article is based on this target, aimed at finding an optimized method, can be determined in accordance with this method in the seismic design the apartment complex structure of the optimal seismic standards, in order to reduce unnecessary shock inputs and necessary to improve the earthquake resistance of ; while determining the optimal fortification acceleration of the city, to provide the basis for the city earthquake-proof. This paper studies the the optimal seismic fortification acceleration of decision analysis method, can be expressed as: seismic design principles can be expressed as E of the total receipts for the biggest form of E = income - investment in production - the possible loss (including repair) = max C (A _d), or expressed as total investment in the smallest form S = seismic input earthquake losses = minimum requirements that have to S the (A _d) = L (A < sub> d ) = MIN, A D fortification seismic acceleration S (A _{of d}) for the seismic input, C (the A _d) seismic design of the initial cost increment, L (A _d) for the economic losses of the earthquake. Determine A _d the optimal fortification acceleration only consider economic factors, and to consider the actual earthquake personnel mortality lt; socially acceptable level, consider this amendment fortification acceleration for the optimal fortification acceleration, is the optimal value of the optimization method in this paper. This optimization method for seismic acceleration model variables, give full consideration to the trends of the future seismic standards, fully demonstrated the seismic acceleration variable continuity and forward-looking main idea of ??this article and the following steps: seismic hazard analysis and seismic peak acceleration beyond probability curve obtained by fitting the seismic acceleration probability density function f (A) = F '(A) = bke ^{bA ^{K ^{K-1 , and as the basis of the model of standard optimizations earthquake acceleration probability density; probabilistic model of earthquake damage by groups of buildings, building earthquake damage prediction raised to the height of the building seismic risk estimates to construct a building earthquake damage estimated probability model, the probability model buildings were in shock acceleration give a quantitative analysis of the extent of the damage; through the two points analysis of potential earthquake risk estimation methods, namely the use of seismic hazard probability density function of earthquake damage probability model to estimate its quantified, established the expression of potential earthquake risk vulnerability function; The previous method to determine the economic calculation method is suitable for application in this article, including: through experience and research to determine the building structure in particular seismic acceleration of the economic loss of earthquake disaster and the building structure due to earthquake-proof initial incremental cost; through the analysis of past earthquake, considering the rate of houses collapsed, occupant density, earthquake ground motion acceleration and other factors, the calculation method of the referenced casualties; introduction of a society can be considered in the seismic standards earthquake mortality ideas, and economically optimal security for the qualification limit the selection of the acceleration of these methods to be corrected and improved so that it can be better used in the optimization method.}}}

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CLC: > Industrial Technology > Building Science > Building structure > Special Structure > Anti - shock structure,disaster prevention structures > Shock, isolation, and explosion-proof structure > Seismic structure
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