【摘要】：儀器地震烈度是基于宏觀地震烈度與地震動(dòng)參數(shù)的經(jīng)驗(yàn)關(guān)系得到反映臺(tái)站附近區(qū)域破壞程度的計(jì)算烈度,可為地震損失評(píng)估、震后應(yīng)急救援及災(zāi)區(qū)恢復(fù)重建提供重要的科學(xué)依據(jù)。儀器地震烈度標(biāo)準(zhǔn)的確定應(yīng)滿(mǎn)足兩個(gè)條件:一是與結(jié)構(gòu)的破壞能有很好的相關(guān)性;二是與宏觀地震烈度有很好的相關(guān)性�，F(xiàn)階段國(guó)內(nèi)外已有儀器地震烈度算法多種多樣,但基本是基于第二個(gè)條件來(lái)確定。本論文基于第一個(gè)條件考慮,為了探索一種或幾種能很好地反映建筑結(jié)構(gòu)震害的儀器地震烈度計(jì)算方法,簡(jiǎn)單評(píng)價(jià)國(guó)內(nèi)外常用的儀器地震烈度反映砌體結(jié)構(gòu)震害的能力,推薦一種能合理評(píng)估不同使用功能砌體結(jié)構(gòu)震害的儀器地震烈度。本文的主要內(nèi)容如下:(1)本文歸納總結(jié)了6種國(guó)內(nèi)外常用儀器地震烈度計(jì)算方法,從地震動(dòng)特性與結(jié)構(gòu)抗震設(shè)計(jì)兩個(gè)方面分別分析了儀器地震烈度所用地震動(dòng)參數(shù)表示的物理意義,為儀器地震烈度和房屋結(jié)構(gòu)震害之間相關(guān)性的研究提供理論支撐;并利用發(fā)生在中國(guó)大陸地區(qū)12次破壞性地震中獲取的139組臺(tái)站記錄,分別采用這六種儀器地震烈度公式計(jì)算得到不同臺(tái)站的儀器地震烈度值。(2)本文根據(jù)德陽(yáng)市、廣元市、江油市和劍閣縣的汶川地震震害資料建立了不同使用功能具有代表性的砌體房屋建筑群非線性模型,采用彈塑性動(dòng)力反應(yīng)分析方法計(jì)算非線性模型群在139組地震動(dòng)作用下的反應(yīng),結(jié)合結(jié)構(gòu)損傷指標(biāo)和破壞等級(jí),確定了不同臺(tái)站附近的砌體結(jié)構(gòu)房屋的平均震害指數(shù)。(3)本文統(tǒng)計(jì)了十種地震動(dòng)參數(shù)與砌體結(jié)構(gòu)平均震害指數(shù)之間的相關(guān)性,得到以下結(jié)論:峰值加速度和有效峰值加速度等反映地震對(duì)結(jié)構(gòu)力作用的參數(shù)與砌體結(jié)構(gòu)的震害有較高的相關(guān)性,砌體結(jié)構(gòu)的層數(shù)直接影響了地震動(dòng)參數(shù)與砌體結(jié)構(gòu)震害相關(guān)性的強(qiáng)弱。(4)本文進(jìn)一步評(píng)價(jià)了國(guó)內(nèi)外常用的六種儀器地震烈度反映砌體房屋震害的能力,得到以下結(jié)論:六種儀器地震烈度與砌體房屋震害均有較好的相關(guān)性,不過(guò)考慮結(jié)構(gòu)破壞程度參數(shù)的模糊烈度算法能更好的反映砌體結(jié)構(gòu)的震害;雖然砌體結(jié)構(gòu)的破壞機(jī)理與層數(shù)密切相關(guān),但模糊烈度算法與不同層數(shù)的砌體住宅結(jié)構(gòu)震害均有很好的相關(guān)性。
[Abstract]:The seismic intensity of the instrument is based on the empirical relationship between the macroscopic seismic intensity and the parameters of the ground motion, and the calculated intensity can reflect the damage degree of the area near the station, which can be used to evaluate the earthquake loss. Emergency rescue after earthquake and reconstruction of disaster areas provide important scientific basis. There are two conditions to be satisfied in determining the seismic intensity standard of instruments: one is good correlation with structural damage and the other is good correlation with macroscopic seismic intensity. At present, there are a variety of instrument seismic intensity algorithms at home and abroad, but basically based on the second condition to determine. In this paper, based on the first condition, in order to explore one or several instrument seismic intensity calculation methods which can well reflect the earthquake damage of building structure, the paper simply evaluates the ability of the instrument seismic intensity to reflect the earthquake damage of masonry structure, which is commonly used at home and abroad. It is recommended that the seismic intensity of an instrument can reasonably evaluate the earthquake damage of masonry structures with different functions. The main contents of this paper are as follows: (1) in this paper, six methods for calculating seismic intensity of domestic and foreign instruments are summarized. In this paper, the physical meaning of the parameter expression of ground motion is analyzed from the aspects of ground motion characteristics and structural seismic design, which provides theoretical support for the study of the correlation between the seismic intensity of instrument and the earthquake damage of building structure. Using 139 sets of station records obtained from 12 destructive earthquakes in the mainland of China, the seismic intensity values of different stations are calculated by using these six kinds of seismic intensity formulas respectively. (2) according to Deyang City and Guangyuan City, The earthquake damage data of Wenchuan in Jiangyou City and Jiange County have established nonlinear models of masonry buildings with different functions. The elastoplastic dynamic response analysis method is used to calculate the response of nonlinear model group under 139 groups of ground motion, combined with the damage index and failure grade of the structure. The average earthquake damage index of masonry structure buildings near different stations is determined. (3) the correlation between the ten kinds of ground motion parameters and the average earthquake damage index of masonry structures is calculated in this paper. The conclusions are as follows: the parameters of peak acceleration and effective peak acceleration which reflect the effect of earthquake on structure force have a high correlation with the earthquake damage of masonry structure. The number of floors of masonry structure has a direct effect on the correlation between seismic parameters and earthquake damage of masonry structure. (4) this paper further evaluates the ability of six kinds of instruments commonly used at home and abroad to reflect the earthquake damage of masonry building. The conclusions are as follows: the seismic intensity of six kinds of instruments has a good correlation with the earthquake damage of masonry buildings, but the fuzzy intensity algorithm considering the structural damage degree parameters can better reflect the earthquake damage of masonry structure; Although the failure mechanism of masonry structure is closely related to the number of stories, the fuzzy intensity algorithm has a good correlation with the earthquake damage of masonry residential structure with different stories.
【學(xué)位授予單位】：中國(guó)地震局工程力學(xué)研究所
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TU364;P315.9

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本文編號(hào)：2311505