【摘要】：現(xiàn)階段我國各地城市化建設(shè)步伐的進(jìn)程不斷加快,城市交通擁擠問題日益嚴(yán)重。只有運(yùn)用大量的公共交通系統(tǒng)尤其是作為城市交通骨干的地鐵,才能有效的緩解各類地上交通擁堵運(yùn)營(yíng)差的問題,提高城市的交通運(yùn)輸效率。進(jìn)入21世紀(jì)起,修建地鐵隧道采用盾構(gòu)法施工成為當(dāng)下的熱門方法,盾構(gòu)施工產(chǎn)生的地層擾動(dòng)較其他方法修建隧道要小很多,但是仍然不能完全避免對(duì)周圍土層產(chǎn)生擾動(dòng),在側(cè)穿或者靠近地面上建筑物時(shí),引起的土體損失必然或多或少地影響建筑物,使之產(chǎn)生沉降或者傾斜,影響其安全性。本論文針對(duì)鄰近既有建筑物的盾構(gòu)隧道施工,應(yīng)用MIDAS GTS NX有限元軟件建立盾構(gòu)隧道-土體-建筑物共同作用的三維模型,研究盾構(gòu)隧道施工時(shí)對(duì)鄰近建筑物的影響效應(yīng)及影響規(guī)律,可以為日后地鐵隧道線路的規(guī)劃提供依據(jù)。首先,本論文介紹了盾構(gòu)隧道施工的發(fā)展?fàn)顩r和主要施工環(huán)節(jié),以及隧道施工時(shí)對(duì)土體產(chǎn)生擾動(dòng)和影響的主要原因。針對(duì)盾構(gòu)施工引起地層擾動(dòng)進(jìn)而影響建筑物傾斜和沉降,給出了三種不同的評(píng)價(jià)地鐵施工對(duì)地層擾動(dòng)的控制評(píng)價(jià)標(biāo)準(zhǔn)和計(jì)算方法。其次,通過數(shù)值模擬軟件建立有盾構(gòu)隧道和建筑物兩者的有限元模型進(jìn)行數(shù)值模擬計(jì)算,分析隨著盾構(gòu)的推進(jìn)開挖隧道造成地表沉降的發(fā)展規(guī)律,研究鄰近既有建筑物的盾構(gòu)法隧道施工引起的橫向和縱向的地表沉降曲線分布特點(diǎn)。計(jì)算結(jié)果表明盾構(gòu)施工引起地表橫向沉降符合經(jīng)驗(yàn)公式計(jì)算結(jié)果的的規(guī)律,建筑物存在的情況下地表沉降較經(jīng)驗(yàn)公式計(jì)算值偏大。最后,對(duì)建筑物的變形及位移進(jìn)行研究,分析盾構(gòu)法隧道施工對(duì)鄰近建筑物的影響效應(yīng)與影響規(guī)律,以及距離隧道不同位置處建筑物變形特點(diǎn)和位移變化規(guī)律。隧道距離鄰近建筑物越近,建筑物沉降越大,最大沉降值和建筑物的傾斜未超出安全限制,基于此可預(yù)測(cè)建筑為安全狀態(tài)。
[Abstract]:At present, the pace of urbanization in various parts of China is accelerating, and the problem of urban traffic congestion is becoming more and more serious. Only by using a large number of public transport systems, especially the subway as the backbone of urban traffic, can we effectively alleviate the problem of poor traffic congestion and improve the efficiency of urban transportation. Since the 21st century, the construction of subway tunnel by shield method has become a popular method. The ground disturbance caused by shield tunneling is much smaller than that of other methods, but it can not completely avoid the disturbance to the surrounding soil layer. The soil loss caused by the side penetrating or near the ground must affect the building more or less, cause it to settle or tilt, and affect its safety. In this paper, a three-dimensional model of shield tunnel-soil-building interaction is established by using MIDAS GTS NX finite element software for shield tunnel construction of adjacent existing buildings. The research on the influence effect and law of shield tunnel construction on adjacent buildings can provide the basis for the planning of subway tunnel line in the future. Firstly, the paper introduces the development of shield tunnel construction and the main construction links, and the main reasons of disturbance and influence on soil mass during tunnel construction. In view of the ground disturbance caused by shield tunneling, which affects the inclination and settlement of buildings, three different evaluation criteria and calculation methods for the control of ground disturbance by subway construction are presented. Secondly, the finite element model of shield tunnel and building is established by numerical simulation software, and the development law of ground subsidence caused by excavation tunnel with shield tunneling is analyzed. The distribution characteristics of lateral and longitudinal surface settlement curves caused by shield tunneling adjacent to existing buildings are studied. The calculation results show that the lateral settlement caused by shield tunneling accords with the rule of empirical formula, and the calculated value of surface settlement is larger than that of empirical formula in the presence of buildings. Finally, the deformation and displacement of buildings are studied, and the effects of shield tunneling on adjacent buildings are analyzed, as well as the deformation characteristics and displacement variation of buildings at different locations from the tunnel. The closer the tunnel is to the adjacent buildings, the larger the building settlement is, and the maximum settlement value and the inclination of the building do not exceed the safety limit. Based on this, it can be predicted that the building is safe.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：U455.43

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張旭輝;邢懿;楊平;;大盾構(gòu)隧道施工對(duì)周邊敏感性建筑物的影響研究[J];地下空間與工程學(xué)報(bào);2015年06期

2 劉婷;趙明月;孫會(huì)杰;李璐;劉忠玉;;盾構(gòu)施工對(duì)已有建筑物基礎(chǔ)沉降的影響分析[J];河南科學(xué);2012年08期

3 陳星欣;白冰;;隧道下穿既有結(jié)構(gòu)物引起的地表沉降控制標(biāo)準(zhǔn)研究[J];工程地質(zhì)學(xué)報(bào);2011年01期

4 姜忻良;賈勇;趙保建;王濤;;地鐵隧道施工對(duì)鄰近建筑物影響的研究[J];巖土力學(xué);2008年11期

5 韓煊;李寧;J.R.Standing;;Peck公式在我國隧道施工地面變形預(yù)測(cè)中的適用性分析[J];巖土力學(xué);2007年01期

6 王文通;;地鐵暗挖法地表合理沉降限值的研究[J];現(xiàn)代城市軌道交通;2006年02期

7 卿偉宸;廖紅建;錢春宇;;地下隧道施工對(duì)相鄰建筑物及地表沉降的影響[J];地下空間與工程學(xué)報(bào);2005年06期

8 劉東亮;EPB盾構(gòu)掘進(jìn)的土壓控制[J];鐵道工程學(xué)報(bào);2005年02期

9 徐永福,陳建山,傅德明;盾構(gòu)掘進(jìn)對(duì)周圍土體力學(xué)性質(zhì)的影響[J];巖石力學(xué)與工程學(xué)報(bào);2003年07期

10 施建勇,張靜,佘才高,樊有維;隧道施工引起土體變形的半解析分析[J];河海大學(xué)學(xué)報(bào)(自然科學(xué)版);2002年06期

相關(guān)博士學(xué)位論文 前1條

1 張海波;地鐵隧道盾構(gòu)法施工對(duì)周圍環(huán)境影響的數(shù)值模擬[D];河海大學(xué);2005年

相關(guān)碩士學(xué)位論文 前1條

1 丁智;盾構(gòu)隧道施工與鄰近建筑物相互影響研究[D];浙江大學(xué);2007年

，

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