本文選題：設(shè)防砌體結(jié)構(gòu) + 易損性分析的確定性方法�。� 參考：《中國(guó)地震局工程力學(xué)研究所》2017年碩士論文

【摘要】：砌體結(jié)構(gòu)在我國(guó)有著悠久的歷史,廣泛應(yīng)用于民用住宅、辦公樓、教學(xué)樓以及工廠等建筑結(jié)構(gòu)中,在不同烈度區(qū)都有大量的分布,這使得不同烈度區(qū)砌體結(jié)構(gòu)抗震能力的研究變得尤為重要。在1976年唐山地震后,圈梁構(gòu)造柱體系對(duì)于砌體結(jié)構(gòu)抗震性能的提升受到專家學(xué)者的廣泛關(guān)注,隨著幾版抗震規(guī)范的修訂完善,對(duì)于構(gòu)造措施的布置逐漸強(qiáng)化,設(shè)防砌體結(jié)構(gòu)整體性與抗震能力大幅度提升,由于當(dāng)前采用的砌體結(jié)構(gòu)震害預(yù)測(cè)方法大多基于六七十年代唐山海城等地震的震害數(shù)據(jù),未充分考慮構(gòu)造措施的影響,已經(jīng)不能準(zhǔn)確描述當(dāng)前設(shè)防砌體結(jié)構(gòu)的震害預(yù)測(cè)結(jié)果,需要進(jìn)行參數(shù)修正,提高準(zhǔn)確性。本文選取震例,采用易損性分析的確定性方法進(jìn)行設(shè)防砌體結(jié)構(gòu)的易損性分析,與實(shí)際震害對(duì)比后發(fā)現(xiàn)結(jié)果差距較大。因此本文根據(jù)89版本、01版本與10版本規(guī)范對(duì)構(gòu)造措施的布置設(shè)計(jì)工況,采用有限元軟件對(duì)實(shí)際結(jié)構(gòu)進(jìn)行建模和時(shí)程分析,最后通過數(shù)據(jù)模擬得到的數(shù)據(jù)對(duì)易損性分析的確定性方法進(jìn)行參數(shù)修正,得到修正矩陣,提高震害預(yù)測(cè)的精度。首先,本文對(duì)國(guó)內(nèi)在存在的震害預(yù)測(cè)方法進(jìn)行介紹,分析其優(yōu)劣特點(diǎn),考慮到本文的研究對(duì)象是砌體結(jié)構(gòu),最后選取尹之潛研究員提出的易損性分析的確定性分析方法為理論基礎(chǔ),并且主要介紹了此方法的理論依據(jù)和流程,闡述了抗力指標(biāo)的計(jì)算過程與意義,并且詳細(xì)介紹了靜態(tài)與動(dòng)態(tài)震害矩陣以及尹之潛方法與震害預(yù)測(cè)的關(guān)系,為后續(xù)的構(gòu)造柱修正系數(shù)的推演提供了理論基礎(chǔ)。其次,本文介紹了我國(guó)砌體結(jié)構(gòu)的發(fā)展史、結(jié)構(gòu)特點(diǎn)以及在典型震害,重點(diǎn)介紹了設(shè)防砌體的概念與組成以及砌體結(jié)構(gòu)合理的破壞模式,并且初步確定結(jié)構(gòu)單層構(gòu)造柱的數(shù)量與實(shí)際的震害指數(shù)間存在一種函數(shù)關(guān)系,為接下來的分析做鋪墊。最后,選取在汶川地震中有典型震害的漩口中學(xué)教師宿舍作為建模原型,依據(jù)89、01和10三版抗震規(guī)范對(duì)構(gòu)造措施的要求來設(shè)計(jì)工況,進(jìn)行有限元建模。在得到結(jié)構(gòu)層間位移角最大值后,將層間位移角與震害指數(shù)掛鉤,結(jié)合修正前的易損性分析結(jié)果與公式反推得到不同層數(shù),不同構(gòu)造柱布置下的構(gòu)造柱修正系數(shù)公式,對(duì)原方法的參數(shù)進(jìn)行補(bǔ)充完善,并且選取震例對(duì)新增的構(gòu)造柱修正系數(shù)進(jìn)行驗(yàn)算。
[Abstract]:Masonry structures have a long history in China. They are widely used in civil residential buildings, office buildings, teaching buildings and factories, and are widely distributed in different intensity areas. This makes the study of seismic capacity of masonry structures in different intensity areas become particularly important. After the Tangshan earthquake of 1976, the improvement of seismic performance of the ring beam structure column system for masonry structure has received extensive attention of experts and scholars. With the revision and perfection of several edition seismic code, the arrangement of structural measures is gradually strengthened. The integrity and seismic capacity of masonry structures have been greatly improved. Because the current prediction methods of masonry structures' earthquake damage are mostly based on the earthquake disaster data of Tangshan Haicheng in the 1960s and 1970s, the influence of structural measures has not been fully considered. The prediction results of earthquake damage of masonry structures with fortification can not be accurately described, and the parameters should be revised to improve the accuracy. In this paper, the vulnerability analysis of masonry structures is carried out by using the deterministic method of vulnerability analysis, and it is found that there is a big gap between the results compared with the actual earthquake damage. Therefore, according to the layout and design conditions of the structural measures in the 89 and 10 versions, the finite element software is used to model and analyze the actual structure. Finally, the deterministic method of vulnerability analysis is modified by the data obtained by data simulation, and the modified matrix is obtained to improve the accuracy of earthquake damage prediction. First of all, this paper introduces the existing earthquake disaster prediction methods in China, analyzes its advantages and disadvantages, considering that the research object of this paper is masonry structure, Finally, the deterministic analysis method of vulnerability analysis proposed by Yin Zhiqian is selected as the theoretical basis, and the theoretical basis and process of this method are mainly introduced, and the calculation process and significance of resistance index are expounded. The relationship between static and dynamic damage matrix and Yin Zhiqian method and earthquake disaster prediction is introduced in detail, which provides a theoretical basis for the deduction of structural column correction coefficient. Secondly, this paper introduces the history, characteristics and typical earthquake damage of masonry structure in our country, especially introduces the concept and composition of fortification masonry and the reasonable failure mode of masonry structure. It is determined that there is a functional relationship between the number of single-layer structural columns and the actual earthquake damage index, which will pave the way for the next analysis. Finally, the teachers' dormitory of Waikou Middle School, which has typical earthquake damage in Wenchuan earthquake, is selected as the modeling prototype. According to the requirements of the structural measures of the 89Y and 103rd edition seismic code, the finite element modeling is carried out. After obtaining the maximum displacement angle of the structure, the interstory displacement angle is linked to the earthquake damage index, and the formula of the correction coefficient of the column under different layers and different structural columns is obtained by combining the results and formulas of vulnerability analysis before the correction. The parameters of the original method are supplemented and perfected, and the newly added structural column correction coefficient is checked and calculated by selecting an earthquake example.
【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】：2017
【分類號(hào)】：TU364;TU352.11

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本文編號(hào)：2101578