發(fā)布時間：2018-04-11 08:33

  本文選題：填海造地 + 內(nèi)灣護(hù)岸��； 參考：《中南大學(xué)》2014年碩士論文

【摘要】：摘要：隨著社會的發(fā)展和人口的增長,我國沿海地區(qū)出現(xiàn)了越來越多的填海造地工程。內(nèi)灣護(hù)岸工程是填海造地工程中一個非常重要的部分。由于填海造地內(nèi)灣護(hù)岸工程中護(hù)岸結(jié)構(gòu)的不對稱性和軟土地基的含水量高、滲透系數(shù)小、孔隙比大、壓縮性大、抗剪強度低、靈敏度高等特性容易造成內(nèi)灣護(hù)岸軟土地基沉降過大和不均勻沉降等現(xiàn)象,嚴(yán)重影響護(hù)岸工程的安全性和穩(wěn)定性。雖然,國內(nèi)外研究軟土地基沉降的方法和理論在不斷完善和趨于成熟,但在填海造地內(nèi)灣護(hù)岸工程軟土地基沉降方面的研究成果并不是很多。因此,我們有必要對填海造地內(nèi)灣護(hù)岸工程軟土地基沉降作更多努力和研究,從而指導(dǎo)填海造地內(nèi)灣護(hù)岸工程的設(shè)計和施工,提高內(nèi)灣護(hù)岸工程的安全性和經(jīng)濟性。 本文在前人們研究的基礎(chǔ)上,結(jié)合某填海造內(nèi)灣護(hù)岸工程實例,通過現(xiàn)場監(jiān)測、理論分析、經(jīng)驗分析、數(shù)值模擬、可靠度分析等手段,主要進(jìn)行了以下幾個方面的工作： 1.制定了內(nèi)灣護(hù)岸軟土地基沉降的現(xiàn)場監(jiān)測方案,并通過現(xiàn)場施工監(jiān)測獲取了大量的數(shù)據(jù)；分析了內(nèi)灣護(hù)岸軟土地基沉降機理,并結(jié)合現(xiàn)場監(jiān)測數(shù)據(jù)分析了內(nèi)灣護(hù)岸軟土地基的沉降規(guī)律。 2.分別利用理論公式法、灰色理論法、雙曲線法計算了內(nèi)灣護(hù)岸工程軟土地基的最終沉降；分別利用灰色理論法和雙曲線法對內(nèi)灣護(hù)岸工程軟土地基沉降進(jìn)行預(yù)測,并將預(yù)測結(jié)果與實測沉降進(jìn)行對比分析；將灰色理論和雙曲線結(jié)合產(chǎn)生灰色理論——雙曲線組合的預(yù)測方法,利用灰色理論——雙曲線組合預(yù)測方法預(yù)測內(nèi)灣護(hù)岸工程軟土地基沉降,并將預(yù)測結(jié)果與實測沉降進(jìn)行比較分析。 3.借助有限元分析軟件ANSYS,以Drucker-Prager模型為土的本構(gòu)模型,建立了以Biot固結(jié)理論為基礎(chǔ)的填海造地內(nèi)灣護(hù)岸工程軟基沉降計算模型。將該模型的計算結(jié)果與實測結(jié)果進(jìn)行對比分析,驗證了該模型的正確性。 4.利用已建立的填海造地內(nèi)灣護(hù)岸工程軟基沉降計算模型,定量分析了變形模量E、泊松比γ、內(nèi)摩擦角φ、黏聚力c等參數(shù)對內(nèi)灣護(hù)岸工程軟土地基地表沉降的影響。按參數(shù)對軟基沉降的影響程度從大到小排列為：泊松比,變形模量,黏聚力,內(nèi)摩擦角。 5.取某填海造地內(nèi)灣護(hù)岸工程項目中一典型斷面ZH KO+300作為研究對象,對該斷面能代表的內(nèi)灣護(hù)岸工程進(jìn)行可靠度分析,驗證了護(hù)岸工程設(shè)計的合理性。并分析了護(hù)岸結(jié)構(gòu)的坡高度比例對護(hù)岸工程沉降可靠度的影響。圖60幅,表33個,參考文獻(xiàn)117篇。
[Abstract]:Absrtact: with the development of society and the increase of population, more and more land reclamation projects appear in coastal areas of China.The inner bay revetment project is a very important part of the reclamation project.Because of the asymmetry of the revetment structure and the high water content of the soft soil foundation, the permeability coefficient is small, the porosity ratio is large, the compressibility is large, and the shear strength is low.It is easy to cause excessive and uneven settlement of soft soil foundation of inner bay bank revetment with high sensitivity, which seriously affects the safety and stability of bank revetment engineering.Although the research methods and theories of soft foundation settlement at home and abroad are constantly improving and maturing, the research results of soft soil foundation settlement in reclaimed inner bay bank protection project are not many.Therefore, it is necessary for us to make more efforts and research on the settlement of soft soil foundation in the reclamation inner bay revetment project, so as to guide the design and construction of the reclamation inner bay revetment project and improve the safety and economy of the inner bay revetment project.On the basis of the previous studies, combining with the example of a reclaimed inner bay revetment project, this paper mainly carried out the following work by means of on-site monitoring, theoretical analysis, empirical analysis, numerical simulation, reliability analysis and so on:1.The site monitoring scheme of soft soil foundation settlement of inner bay bank protection is established, and a large number of data are obtained through site construction monitoring, and the settlement mechanism of soft soil foundation in inner bay bank protection is analyzed.The settlement law of soft soil foundation of inner bay bank protection is analyzed based on field monitoring data.2.The final settlement of soft soil foundation of inner bay revetment engineering is calculated by theoretical formula method, grey theory method and hyperbolic method respectively, and the settlement of soft soil foundation of inner bay revetment project is predicted by using grey theory method and hyperbolic method respectively.The prediction results are compared with the measured settlement, and the grey theory and hyperbolic method are combined to produce the grey theory-hyperbolic combination.The grey theory and hyperbolic combined forecasting method are used to predict the settlement of soft soil foundation of the inner bay revetment project, and the results are compared with the measured settlement.3.With the help of finite element analysis software ANSYS and Drucker-Prager model as the constitutive model of soil, the settlement calculation model of soft foundation of reclaimed inner bay revetment is established based on Biot consolidation theory.The correctness of the model is verified by comparing the calculated results with the measured results.4.Based on the established calculation model of soft foundation settlement in reclaimed inner bay revetment project, the effects of deformation modulus E, Poisson's ratio 緯, internal friction angle 蠁 and cohesion C on the surface settlement of soft soil foundation of inner bay revetment engineering are quantitatively analyzed.The order of influence of parameters on soft foundation settlement is Poisson's ratio, modulus of deformation, cohesion and angle of internal friction.5.Taking ZH KO300, a typical section of a reclaimed inner bay revetment project, as the research object, the reliability of the inner bay revetment project which can be represented by this section is analyzed, and the rationality of the design of the revetment engineering is verified.The influence of slope height ratio of revetment structure on settlement reliability of revetment engineering is analyzed.There are 60 pictures, 33 tables and 117 references.
【學(xué)位授予單位】：中南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U655.54

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 石世云;多變量灰色模型MGM(1,n)在變形預(yù)測中的應(yīng)用[J];測繪通報;1998年10期

2 吳大志,李夕兵,王桂堯;高速公路路基沉降計算方法[J];湖南交通科技;2001年04期

3 楊濤,李國維,樊琨;基于人工神經(jīng)網(wǎng)絡(luò)的公路軟基沉降預(yù)測模型[J];上海理工大學(xué)學(xué)報;2003年02期

4 鄧聚龍;灰色控制系統(tǒng)[J];華中工學(xué)院學(xué)報;1982年03期

5 李綱林,劉祖德,鄒勇,葉季平;應(yīng)力路徑法在地基沉降計算中的應(yīng)用[J];武漢大學(xué)學(xué)報(工學(xué)版);2003年06期

6 李政;孟德光;李冰心;;神經(jīng)網(wǎng)絡(luò)在軟基沉降預(yù)測中的應(yīng)用[J];西北農(nóng)林科技大學(xué)學(xué)報(自然科學(xué)版);2007年07期

7 張儀萍,俞亞南,張土喬,高文明;沉降預(yù)測中的灰色模型理論與Asaoka法[J];系統(tǒng)工程理論與實踐;2002年09期

8 耿雪玉,徐長節(jié),蔡袁強;循環(huán)荷載作用下飽和軟粘土非線性一維固結(jié)[J];巖石力學(xué)與工程學(xué)報;2004年19期

9 謝康和;周瑾;董亞欽;;循環(huán)荷載作用下地基一維非線性固結(jié)解析解[J];巖石力學(xué)與工程學(xué)報;2006年01期

10 徐少曼;對稱荷載下飽和粘性土地基不排水沉降量的計算[J];巖土工程學(xué)報;1983年01期

相關(guān)博士學(xué)位論文 前1條

1 吳雪婷;溫州淺灘軟土工程特性及固結(jié)沉降規(guī)律研究[D];中國地質(zhì)大學(xué);2010年

，

本文編號：1735229