場測數(shù)據(jù)靜載試驗(yàn)裝配式梁橋參數(shù)識別應(yīng)用研究
[Abstract]:At present, due to the unique economic benefits and the advantages of design and construction of the prefabricated beam bridges in China, the number of them accounts for a large proportion. These structures are faced with the decision of whether it is necessary to repair and reinforce them after different years of service. Based on the field load test of Baoquanling No.2 Highway Bridge, the design parameters are identified. The static parameters of the prestressed concrete continuous beam bridge with simple support and continuous conversion are identified by using the field measured deflection data. Before recognition, it is assumed that the structure is in the range of linear elasticity, the stiffness of beam body is selected by identifying parameters, the objective function of the identification algorithm is set as the difference of deflection of each measuring point, and the parameter identification value in the sense of least square is given by Newton iteration method. The modified finite element model is obtained. According to the field measured data in this paper, the identification value under different parameter grouping is selected, and finally the second and fourth span of the bridge can not meet the requirements of bearing capacity, and the evaluation conclusion is given that it is necessary to reinforce the bridge.
【學(xué)位授予單位】:哈爾濱工業(yè)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:U446
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 鄧苗毅;任偉新;;基于靜力荷載試驗(yàn)的連續(xù)箱梁橋結(jié)構(gòu)有限元模型修正[J];福州大學(xué)學(xué)報(自然科學(xué)版);2009年02期
2 孫國,顧元憲;連續(xù)梁結(jié)構(gòu)損傷識別的改進(jìn)柔度陣方法[J];工程力學(xué);2003年04期
3 蔡晶,吳智深,李兆霞;靜力荷載作用下結(jié)構(gòu)參數(shù)識別及狀態(tài)評估的統(tǒng)計(jì)分析[J];工程力學(xué);2004年06期
4 萬信華;縱瑞芳;黃斌;;初始模型的不確定性對梁式結(jié)構(gòu)靜力損傷識別的影響[J];公路;2012年03期
5 向天宇;趙人達(dá);蒲黔輝;劉海波;;基于靜力測試數(shù)據(jù)的裝配式混凝土簡支梁有限元模型修正[J];公路交通科技;2006年10期
6 吳國勝;卜一之;;基于最小二乘法的參數(shù)識別方法在斜拉橋施工控制中的應(yīng)用[J];中外公路;2008年06期
7 李金寶;王達(dá);劉揚(yáng);;基于參數(shù)分析的子結(jié)構(gòu)有限元模型修正技術(shù)[J];中外公路;2012年03期
8 崔飛,袁萬城,史家鈞;基于靜載試驗(yàn)進(jìn)行橋梁結(jié)構(gòu)損傷識別[J];橋梁建設(shè);2003年02期
9 劉綱;楊溥;侍剛;岳笛;;大跨度橋梁模型修正方法研究[J];橋梁建設(shè);2008年01期
10 鄧苗毅;任偉新;;基于實(shí)測撓度、轉(zhuǎn)角和曲率的細(xì)長梁分段抗彎剛度識別研究[J];實(shí)驗(yàn)力學(xué);2007年05期
相關(guān)博士學(xué)位論文 前1條
1 盛可鑒;簡支轉(zhuǎn)連續(xù)梁橋的幾個關(guān)鍵問題研究[D];哈爾濱工業(yè)大學(xué);2013年
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