本文選題：強(qiáng)震觀測(cè) + 模態(tài)參數(shù)識(shí)別�。� 參考：《地震工程與工程振動(dòng)》2017年02期

【摘要】：大壩的強(qiáng)震觀測(cè)是傳感器測(cè)量的結(jié)構(gòu)在地震激勵(lì)下實(shí)際的振動(dòng)反應(yīng)�；趶�(qiáng)震觀測(cè)進(jìn)行混凝土拱壩模態(tài)參數(shù)識(shí)別,可為結(jié)構(gòu)的抗震分析、健康診斷和震損評(píng)估等提供基礎(chǔ)。本文基于Pacoima拱壩的3次地震觀測(cè)數(shù)據(jù),分別采用"輸入-輸出"型和"僅考慮輸出"型兩類方法對(duì)大壩的模態(tài)參數(shù)進(jìn)行了識(shí)別,并對(duì)不同地震記錄下,不同方法的識(shí)別結(jié)果進(jìn)行對(duì)比。同時(shí),結(jié)合國(guó)內(nèi)外不同學(xué)者通過(guò)數(shù)值計(jì)算、大壩原型動(dòng)力試驗(yàn)和運(yùn)行模態(tài)分析等方式得到的Pacoima拱壩模態(tài)參數(shù)識(shí)別的結(jié)果,分析了基于強(qiáng)震觀測(cè)的模態(tài)識(shí)別結(jié)果與上述方式獲得的模態(tài)參數(shù)的差異,并分析了差異產(chǎn)生的原因。相關(guān)的研究成果,可為后續(xù)的研究提供參考。
[Abstract]:The strong earthquake observation of the dam is the actual vibration response of the structure measured by the sensor under the earthquake excitation. Modal parameter identification of concrete arch dam based on strong earthquake observation can provide foundation for seismic analysis, health diagnosis and earthquake damage assessment of structures. Based on the three seismic observation data of Pacoima arch dam, the modal parameters of the dam are identified by the two methods of "input-output" type and "only considering output" type, respectively, and the different seismic records are given. The results of different methods are compared. At the same time, combined with the results of modal parameter identification of Pacoima arch dam obtained by different scholars at home and abroad through numerical calculation, prototype dynamic test of dam and operation modal analysis, etc. The differences between the modal identification results based on strong earthquake observation and the modal parameters obtained by the above methods are analyzed, and the causes of the differences are analyzed. The related research results can provide a reference for further research.
【作者單位】： 西安理工大學(xué)西北旱區(qū)生態(tài)水利工程國(guó)家重點(diǎn)實(shí)驗(yàn)室培育基地;河海大學(xué)水文水資源與水利工程科學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室;福州大學(xué)至誠(chéng)學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51409205,51579085) 博士后自然科學(xué)基金項(xiàng)目(2015M572656XB) 陜西省博士后自然科學(xué)基金項(xiàng)目 水文水資源與水利工程科學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室開放研究基金項(xiàng)目(2014491011) 西安理工大學(xué)水利水電學(xué)院青年科技創(chuàng)新團(tuán)隊(duì)(2016ZZKT-14)~~
【分類號(hào)】：TV698.13

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