本文關(guān)鍵詞：淺埋隧道開挖巖體移動(dòng)分析的模糊測(cè)度方法　出處：《河北大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 山區(qū)淺埋隧道 巖體移動(dòng)變形 模糊測(cè)度 人工神經(jīng)網(wǎng)絡(luò) Ansys

【摘要】：本文針對(duì)山區(qū)淺埋隧道開挖引起的巖體移動(dòng)問題，采用模糊測(cè)度模型進(jìn)行預(yù)測(cè)分析，并以MATLAB為平臺(tái)進(jìn)行數(shù)值計(jì)算。本研究以韓家莊隧道工程為例，確定不同的地質(zhì)剖面進(jìn)行巖體移動(dòng)變形預(yù)測(cè)分析。計(jì)算中對(duì)理論模型中所涉及的參數(shù)，采用人工神經(jīng)網(wǎng)絡(luò)方法進(jìn)行確定。 利用模糊神經(jīng)網(wǎng)絡(luò)方法分析結(jié)果表明：（1）山區(qū)淺埋隧道開挖后地表位移變形呈現(xiàn)出明顯的非對(duì)稱性；（2）隧道埋深與地表最大沉降成反比，且埋深越大，，對(duì)地表最大沉降值的影響越不敏感；（3）地表坡度的變化對(duì)最大沉降值影響較��；（4）隧道跨度的大小與地表最大沉降成正比，且跨度越大，對(duì)最大沉降值的影響越敏感。 針對(duì)韓家莊隧道工程，在利用模糊測(cè)度模型進(jìn)行了具體分析的同時(shí)，采用有限單元法對(duì)隧道開挖巖體移動(dòng)進(jìn)行了數(shù)值模擬分析，并將所得數(shù)值模擬結(jié)果與模糊測(cè)度模型計(jì)算結(jié)果及實(shí)測(cè)數(shù)據(jù)進(jìn)行了對(duì)比，使不同方法所獲結(jié)果能夠相互驗(yàn)證。 對(duì)比結(jié)果表明，模糊測(cè)度模型計(jì)算結(jié)果與韓家莊隧道實(shí)測(cè)結(jié)果基本一致，從而為山區(qū)淺埋隧道開挖引起的地表下沉預(yù)測(cè)提供了一種新的方法—模糊神經(jīng)網(wǎng)絡(luò)方法。理論分析結(jié)果表明，ANSYS軟件預(yù)測(cè)所獲的最大下沉值與實(shí)測(cè)最大下沉值二者基本一致，但整體下沉分布與實(shí)測(cè)值相差較大，主要是邊界效應(yīng)不符合工程實(shí)際，而模糊測(cè)度模型則可以解決這一問題。
[Abstract]:In this paper, fuzzy measure model is used to predict and analyze rock mass movement caused by shallow tunnel excavation in mountainous area, and numerical calculation is carried out on the platform of MATLAB. In this study, Hanjiazhuang tunnel project is taken as an example. The parameters involved in the theoretical model are determined by artificial neural network method. The results of fuzzy neural network analysis show that the surface displacement and deformation of shallow buried tunnel in mountainous area show obvious asymmetry after excavation. (2) the depth of the tunnel is inversely proportional to the maximum settlement of the earth's surface, and the greater the depth, the less sensitive it is to the maximum settlement of the surface; (3) the change of surface slope has little effect on the maximum settlement value; (4) the size of tunnel span is proportional to the maximum surface settlement, and the larger the span is, the more sensitive it is to the maximum settlement value. In view of Hanjiazhuang tunnel project, the fuzzy measure model is used to carry out the concrete analysis, and the finite element method is used to simulate the rock mass movement of the tunnel excavation. The numerical simulation results are compared with the calculated results of fuzzy measure model and the measured data, so that the results obtained by different methods can be verified mutually. The comparison results show that the calculation results of fuzzy measure model are basically consistent with the measured results of Hanjiazhuang tunnel. It provides a new method for prediction of surface subsidence caused by shallow tunnel excavation in mountainous area, which is called fuzzy neural network method. The theoretical analysis results show that this method can be used to predict the surface subsidence of shallow buried tunnels. The maximum subsidence value predicted by ANSYS software is basically consistent with the measured maximum subsidence value, but the difference between the overall subsidence distribution and the measured value is quite large, mainly because the boundary effect is not in line with the engineering practice. Fuzzy measure model can solve this problem.
【學(xué)位授予單位】：河北大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U456.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 喬金麗;范永利;劉波;李艷艷;張彥平;;基于改進(jìn)BP網(wǎng)絡(luò)的盾構(gòu)隧道開挖地表沉降預(yù)測(cè)[J];地下空間與工程學(xué)報(bào);2012年02期

2 侯學(xué)淵,廖少明;盾構(gòu)隧道沉降預(yù)估[J];地下工程與隧道;1993年04期

3 李文秀;山區(qū)巖體移動(dòng)的Fuzzy預(yù)測(cè)模型[J];遼寧工程技術(shù)大學(xué)學(xué)報(bào)(自然科學(xué)版);2001年05期

4 胡斌;莫云;胡新麗;唐輝明;馮曉臘;;Peck法在武漢地鐵隧道地表沉降預(yù)測(cè)中的適用性分析[J];工程勘察;2012年07期

5 霍衛(wèi)華;軟巖大跨隧道施工力學(xué)研究[J];河北理工學(xué)院學(xué)報(bào);2004年04期

6 羅成漢;基于MATLAB神經(jīng)網(wǎng)絡(luò)工具箱的BP網(wǎng)絡(luò)實(shí)現(xiàn)[J];計(jì)算機(jī)仿真;2004年05期

7 李文秀;候曉兵;張瑞雪;戴蘭芳;;模糊測(cè)度在山區(qū)開挖巖體移動(dòng)分析中的應(yīng)用[J];模糊系統(tǒng)與數(shù)學(xué);2007年02期

8 崔學(xué)東;陳莉雯;王耀輝;唐新建;;鳳凰關(guān)隧道地表沉降特性分析[J];土工基礎(chǔ);2008年05期

9 尚鋼,鐘珞,陳立耀;神經(jīng)網(wǎng)絡(luò)結(jié)構(gòu)與訓(xùn)練參數(shù)選取[J];武漢工業(yè)大學(xué)學(xué)報(bào);1997年02期

10 王文正;夏永旭;胡慶安;;公路隧道施工過程的數(shù)值模擬及ANSYS實(shí)現(xiàn)[J];西部交通科技;2007年04期

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