本文關(guān)鍵詞：基于Pushover方法的單自由度結(jié)構(gòu)抗震易損性分析　出處：《大連理工大學(xué)》2014年博士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 單自由度結(jié)構(gòu) Pushover分析 結(jié)構(gòu)易損性分析 統(tǒng)計(jì)分析 彈塑性動力時程分析 不確定性

【摘要】：結(jié)構(gòu)易損性分析是目前國內(nèi)外研究的熱點(diǎn)問題。對結(jié)構(gòu)進(jìn)行易損性分析可以有效地評估新建結(jié)構(gòu)和已有結(jié)構(gòu)的抗震能力,減輕地震災(zāi)害,對已有結(jié)構(gòu)提出合理的加固維修決策。以易損性曲線的形式描述結(jié)構(gòu)易損性是一種被廣泛采用的方法。建立易損性曲線有多種方法,目前應(yīng)用較多的是非線性動力時程分析方法。該方法過程繁瑣,計(jì)算量很大,在工程應(yīng)用中費(fèi)時費(fèi)力。鑒于此,本文在查閱大量國內(nèi)外文獻(xiàn),在國內(nèi)外已有研究成果的基礎(chǔ)上,開展了基于Pushover的單自由度體系結(jié)構(gòu)易損性分析方法研究。主要研究內(nèi)容如下： 1、對單自由度體系結(jié)構(gòu)在構(gòu)造的正弦波、擬合于規(guī)范反應(yīng)譜的地震波以及記錄的EL-centro波和唐山波單條地震波作用下進(jìn)行彈塑性時程分析和Pushover分析。分析了不同Pushover方法分析結(jié)果與彈塑性時程分析結(jié)果的差別,對不同Pushover分析進(jìn)行了評價 2、選擇多條真實(shí)記錄的地震波進(jìn)行彈塑性動力時程分析,并通過彈性時程分析建立彈性加速度反應(yīng)譜,采用該反應(yīng)譜對相同結(jié)構(gòu)進(jìn)行Pushover分析。從統(tǒng)計(jì)角度研究了彈塑性時程分析結(jié)果與Pushover分析結(jié)果之比的關(guān)系,考慮了地震動不確定性影響。 3、采用Monte-Carlo方法生成多個單自由度結(jié)構(gòu),對這些結(jié)構(gòu)采用基于Takeda模型和Kinematic模型的能力譜法及N2法進(jìn)行Pushover分析,并對分析結(jié)果進(jìn)行統(tǒng)計(jì)分析,得到由結(jié)構(gòu)參數(shù)隨機(jī)性引起的Pushover分析結(jié)果的統(tǒng)計(jì)規(guī)律。 4、提出了基于Pushover的單自由度結(jié)構(gòu)易損性分析方法,對采用該方法得到的易損性與Monte-Carlo方法計(jì)算的結(jié)果進(jìn)行比較。 5、以一預(yù)應(yīng)力混凝土連續(xù)剛構(gòu)橋和受腐蝕鋼筋混凝土橋梁的易損性為例,說明了本文提出的基于Pushover的單自由度體系結(jié)構(gòu)易損性分析方法的應(yīng)用。
[Abstract]:Structural vulnerability analysis is a hot issue at home and abroad. Vulnerability analysis of structures can effectively evaluate the seismic capacity of new structures and existing structures, and reduce earthquake disasters. A reasonable reinforcement and maintenance decision is put forward for the existing structures. It is a widely used method to describe the structural vulnerability in the form of the vulnerability curve. There are many methods to establish the vulnerability curve. At present, the nonlinear dynamic time-history analysis method is widely used. The process of this method is tedious, the calculation is very heavy, and it is time-consuming and laborious in engineering application. In view of this, this paper is consulting a large number of domestic and foreign literature. Based on the existing research results at home and abroad, the vulnerability analysis method of single-degree-of-freedom architecture based on Pushover is studied. The main contents are as follows: 1. For the single degree of freedom system structure in the construction of sine wave. The elastic-plastic time-history analysis and Pushover analysis of seismic waves fitted to the normative response spectrum and the recorded EL-centro waves and Tangshan waves under the action of single strip seismic waves are carried out. Different Pusho are analyzed. The difference between the ver method and the elastic-plastic time history analysis. Different Pushover analysis was evaluated. (2) Elastoplastic dynamic time-history analysis is carried out by selecting several real seismic waves, and elastic acceleration response spectrum is established by elastic time-history analysis. The Pushover analysis of the same structure is carried out by using the response spectrum. The relationship between the results of elastic-plastic time-history analysis and that of Pushover analysis is studied from the statistical point of view. The effect of ground motion uncertainty is considered. 3. Monte-Carlo method is used to generate multiple single-degree-of-freedom structures. The Pushover analysis of these structures is carried out by using the capability spectrum method and N2 method based on Takeda model and Kinematic model, and the results are statistically analyzed. The statistical rules of Pushover analysis results caused by the randomness of structural parameters are obtained. 4. The vulnerability analysis method of single degree of freedom structure based on Pushover is proposed, and the results obtained by this method are compared with the results obtained by Monte-Carlo method. 5. Take the vulnerability of a prestressed concrete continuous rigid frame bridge and corroded reinforced concrete bridge as an example. The application of vulnerability analysis method of single degree of freedom architecture based on Pushover proposed in this paper is explained.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2014
【分類號】：TU352.11

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 常業(yè)軍,吳曙光,張坤勇;底層框架磚房的震害預(yù)測方法[J];四川建筑科學(xué)研究;2001年02期

2 楊玉成,楊柳,高云學(xué),楊亞玲,陸錫蕾,楊桂珍;現(xiàn)有多層磚房震害預(yù)測的方法及其可靠度[J];地震工程與工程振動;1982年03期

3 尹之潛,李樹楨,楊淑文,趙直;震害與地震損失的估計(jì)方法[J];地震工程與工程振動;1990年01期

4 楊玉成,李大華,楊雅玲,王治山,楊柳;投入使用的多層砌體房屋震害預(yù)測專家系統(tǒng)PDSMSMB-1[J];地震工程與工程振動;1990年03期

5 尹之潛;地震災(zāi)害損失預(yù)測研究[J];地震工程與工程振動;1991年04期

6 趙成剛;生命線地震工程中的幾個基本問題[J];地震工程與工程振動;1993年02期

7 侯鋼領(lǐng),何政,吳斌,歐進(jìn)萍;鋼筋混凝土結(jié)構(gòu)的屈服位移Chopra能力譜損傷分析與性能設(shè)計(jì)[J];地震工程與工程振動;2001年03期

8 張令心,江近仁,劉潔平;多層住宅磚房的地震易損性分析[J];地震工程與工程振動;2002年01期

9 于德湖,王煥定;配筋砌體結(jié)構(gòu)地震易損性評價方法初探[J];地震工程與工程振動;2002年04期

10 陶正如,陶夏新;基于地震動參數(shù)的建筑物震害預(yù)測[J];地震工程與工程振動;2004年02期

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