本文選題：IDA方法 + RC框架結(jié)構(gòu)��； 參考：《蘇州科技大學(xué)》2017年碩士論文

【摘要】：發(fā)生地震時,若RC框架結(jié)構(gòu)的變形到達(dá)倒塌極限時,就會發(fā)生倒塌破壞。近年來鋼筋混凝土框架結(jié)構(gòu)倒塌失效準(zhǔn)則有很多,但在實際應(yīng)用時如何選擇倒塌判定準(zhǔn)則沒有定論,而且建筑物的倒塌是造成人員傷亡和財產(chǎn)損失的主要原因。因此,對RC框架結(jié)構(gòu)建立一個較為準(zhǔn)確的倒塌失效準(zhǔn)則就變得尤為重要�；诖�,本文引入增量動力分析方法,對鋼筋混凝土框架結(jié)構(gòu)在地震作用下的倒塌進(jìn)行了深入的研究。主要工作及結(jié)論如下:(1)對國內(nèi)外RC框架結(jié)構(gòu)倒塌失效準(zhǔn)則進(jìn)行總結(jié)并得出六種倒塌失效準(zhǔn)則,分別為基于強度、變形、能量、變形和能量雙參數(shù)、剛度和IDA方法失效準(zhǔn)則。選擇其中的基于IDA方法和變形的失效準(zhǔn)則進(jìn)行倒塌對比分析。(2)在進(jìn)行增量動力分析之前,考慮到所選地震記錄反應(yīng)譜平臺段與場地的卓越周期Ts的影響,而根據(jù)反應(yīng)譜的兩個頻率段選取10條地震波,運用SeismoSingnal地震動分析軟件確定Sa(T1,5%),最后運用huntfill不等步調(diào)幅原則對其進(jìn)行調(diào)幅。采用SAP2000有限元軟件建立一個十層三跨RC框架分析模型并對其中一榀進(jìn)行一系列彈塑性時程分析,把得到的IM和DM連接成IDA曲線并利用“折半取中”的方法得到倒塌狀態(tài)點。(3)計算出建筑結(jié)構(gòu)倒塌狀態(tài)點處對應(yīng)的調(diào)幅系數(shù),對地震記錄進(jìn)行調(diào)幅后并再次進(jìn)行彈塑性時程分析;然后在分析時程中找出層間位移角達(dá)到變形限值1/50時及最后時刻出鉸圖,對梁柱的出鉸情況進(jìn)行分析總結(jié)得出:基于變形的倒塌失效準(zhǔn)則有低估結(jié)構(gòu)抗倒塌能力的風(fēng)險并且IDA準(zhǔn)則比變形準(zhǔn)則較低的評價了結(jié)構(gòu)的損傷。(4)定義了殘余層間位移角的概念,并把其作為結(jié)構(gòu)損傷指標(biāo)運用在IDA分析中。通過與結(jié)構(gòu)損傷指標(biāo)為層間位移角的IDA倒塌分析進(jìn)行對比得出:后者對結(jié)構(gòu)抗倒塌性能的評估大于前者,而前者更為敏感。(5)通過運用不同結(jié)構(gòu)損傷指標(biāo)的IDA方法對結(jié)構(gòu)進(jìn)行易損性分析并對易損性曲線進(jìn)行對比中發(fā)現(xiàn)DM為殘余層間位移角進(jìn)行IDA分析得到的易損性曲線對地震作用下倒塌風(fēng)險的評估偏于保守,適合于一些重要性更高的結(jié)構(gòu)。
[Abstract]:When an earthquake occurs, if the deformation of RC frame structure reaches the collapse limit, it will collapse and destroy. In recent years, there are many collapse failure criteria for reinforced concrete frame structures, but how to choose collapse criteria in practical application is not conclusive, and the collapse of buildings is the main cause of casualties and property losses. Therefore, it is very important to establish a more accurate collapse failure criterion for RC frame structure. Based on this, the incremental dynamic analysis method is introduced to study the collapse of reinforced concrete frame structures under earthquake. The main work and conclusions are as follows: (1) the collapse failure criteria of RC frame structures at home and abroad are summarized and six collapse failure criteria are obtained, which are based on strength, deformation, energy, deformation and dual parameters of energy, stiffness and IDA method. A comparative collapse analysis based on IDA method and deformation-based failure criterion is selected. Before the incremental dynamic analysis is carried out, the effects of the selected seismic response spectrum platform segment and the site excellent period ts are taken into account. According to the two frequency bands of the response spectrum, 10 seismic waves are selected, and the SeismoSingnal ground motion analysis software is used to determine the huntfill T1 / 5. Finally, the huntfill principle of unequal step amplitude is used to modulate the amplitude. A 10-story three-span RC frame analysis model was established by using SAP2000 finite element software, and a series of elastic-plastic time-history analysis was carried out on one of them. The obtained IM and DM are connected to the IDA curve and the collapse state point is obtained by the method of "half-fold".) the amplitude modulation coefficient at the collapse state point of the building structure is calculated, and the amplitude modulation of the seismic record is carried out and the elastic-plastic time-history analysis is carried out again. Then, in the analysis process, when the displacement angle between the floors reaches the deformation limit of 1 / 50 and at the last moment, the hinge diagram is found. From the analysis of Liang Zhu's hinge condition, it is concluded that the collapse failure criterion based on deformation has the risk of underestimating the collapse resistance of the structure and that the IDA criterion is lower than the deformation criterion in evaluating the damage of the structure. (4) the concept of the displacement angle between the residual layers is defined. It is used as structural damage index in IDA analysis. By comparing with the IDA collapse analysis with the structural damage index as the interstory displacement angle, it is concluded that the evaluation of the latter for the collapse resistance of the structure is greater than that for the former. The former is more sensitive. 5) by using the IDA method of different structural damage indexes to analyze the vulnerability of structures and compare the vulnerability curves, it is found that DM is the vulnerability curve obtained by IDA analysis of residual interlayer displacement angle. The assessment of the risk of collapse due to earthquake is conservative. Suitable for some of the more important structures.
【學(xué)位授予單位】：蘇州科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU375.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 孫玉紅;聶立武;韓古月;;地震作用下建筑結(jié)構(gòu)倒塌失效準(zhǔn)則分析[J];中外建筑;2011年07期

2 顧祥林;印小晶;林峰;王英;;建筑結(jié)構(gòu)倒塌過程模擬與防倒塌設(shè)計[J];建筑結(jié)構(gòu)學(xué)報;2010年06期

3 張富文;呂西林;;框架結(jié)構(gòu)不同倒塌模式的數(shù)值模擬與分析[J];建筑結(jié)構(gòu)學(xué)報;2009年05期

4 胡曉斌;錢稼茹;;結(jié)構(gòu)連續(xù)倒塌分析與設(shè)計方法綜述[J];建筑結(jié)構(gòu);2006年S1期

5 汪夢甫,糜永紅;基于能量理論的鋼筋混凝土框架-剪力墻結(jié)構(gòu)非線性地震反應(yīng)分析[J];工程抗震;2004年02期

6 謝禮立,馬玉宏;現(xiàn)代抗震設(shè)計理論的發(fā)展過程[J];國際地震動態(tài);2003年10期

7 王震宇,吳波,林少書,李惠,黃玉龍;香港地區(qū)鋼筋混凝土框架柱的抗震性能試驗研究[J];哈爾濱建筑大學(xué)學(xué)報;2001年02期

8 呂大剛,王光遠(yuǎn);基于損傷性能的抗震結(jié)構(gòu)最優(yōu)設(shè)防水準(zhǔn)的決策方法[J];土木工程學(xué)報;2001年01期

9 倪強,唐家祥;鋼筋混凝土框架結(jié)構(gòu)倒塌的計算機仿真研究[J];華中理工大學(xué)學(xué)報;1999年08期

10 江近仁,孫景江;磚結(jié)構(gòu)的地震破壞模型[J];地震工程與工程振動;1987年01期

相關(guān)博士學(xué)位論文 前2條

1 李應(yīng)斌;鋼筋混凝土結(jié)構(gòu)基于性能的抗震設(shè)計理論與應(yīng)用研究[D];西安建筑科技大學(xué);2004年

2 張國軍;大型火力發(fā)電廠高強混凝土框架柱的抗震性能研究[D];西安建筑科技大學(xué);2003年

相關(guān)碩士學(xué)位論文 前1條

1 葉飛;基于OpenSEES的RC框架結(jié)構(gòu)抗地震倒塌性能分析[D];湖南大學(xué);2011年

，

本文編號：1796597