發(fā)布時間：2018-06-09 16:48

  本文選題：隧道開挖 + 地表沉降��； 參考：《上海大學(xué)》2015年碩士論文

【摘要】：隨著城市交通事業(yè)的蓬勃發(fā)展,地下隧道工程日益增多。由于城市環(huán)境的復(fù)雜性,地下通道施工經(jīng)常會出現(xiàn)鄰近或穿越密集建筑群的情況,若不及時采取正確的保護措施,建筑物的安全和正常使用將受到威脅。因此,研究地下通道施工對地表建筑物的影響是非常必要的。本文結(jié)合上海市外灘隧道工程福州路至天潼路區(qū)段鄰近或穿越地表建筑物的工程實際,采用理論分析和數(shù)值模擬相結(jié)合的方法,研究了地下通道開挖過程中對鄰近條形基礎(chǔ)的影響,主要研究內(nèi)容和成果如下:1.通過數(shù)值模擬和理論分析,研究了地下通道開挖過程中影響鄰近條形基礎(chǔ)變形的因素,包括:條形基礎(chǔ)到地下通道縱向中心軸線的距離、通道埋深、通道直徑、支護剛度以及土層特性等,并提出了地下通道開挖過程中與條形基礎(chǔ)之間安全距離的估算方法,為確定合理的隧道直徑、平面布置、埋深以及支護措施等提供參考。2.探討了荷載作用下地表沉降受既有隧道的影響規(guī)律及布辛奈斯克公式在非連續(xù)彈性土體中的適用性。3.根據(jù)基于非等量徑向土體移動模式估算的隧道開挖引起土體自由場位移解析解和半空間內(nèi)任意點處由隧道開挖引起的應(yīng)力和位移彈性力學(xué)解答,推導(dǎo)了地下通道開挖引起頂部條形基礎(chǔ)變形的計算公式。同時還得到了既有條形基礎(chǔ)在地下通道開挖過程中,對土體運動的影響規(guī)律。
[Abstract]:With the vigorous development of urban transportation, underground tunnel engineering is increasing day by day. Due to the complexity of urban environment, the construction of underground passage often occurs in the vicinity or through the dense buildings. If the correct protection measures are not taken in time, the safety and normal use of buildings will be threatened. Therefore, it is necessary to study the influence of underground tunnel construction on surface buildings. Based on the engineering practice of the section from Fuzhou Road to Tiantong Road in Shanghai Bund Tunnel Project, this paper adopts the method of combining theoretical analysis and numerical simulation. The influence of underground tunnel excavation on adjacent strip foundation is studied. The main contents and results are as follows: 1. Through numerical simulation and theoretical analysis, the factors influencing the deformation of adjacent strip foundation during the excavation of underground tunnel are studied, including: distance from strip foundation to longitudinal axis of underground passage, tunnel depth, channel diameter, The method of estimating the safe distance between the underground tunnel and the strip foundation during excavation is put forward, which provides a reference for determining the reasonable tunnel diameter, plane layout, buried depth and supporting measures. The influence of existing tunnels on surface settlement under load and the applicability of Bushinesk formula in discontinuous elastic soil are discussed. According to the analytical solution of the free field displacement of soil caused by tunnel excavation and the elastic solution of stress and displacement caused by tunnel excavation at any point in the half-space based on the estimation of non-equal radial soil movement model. The calculation formula of the deformation of the top strip foundation caused by the excavation of the underground passage is derived. At the same time, the influence of the existing strip foundation on the soil movement during the excavation of the underground tunnel is obtained.
【學(xué)位授予單位】：上海大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U455.4

【共引文獻】

相關(guān)期刊論文 前3條

1 余佳力;徐禮華;艾心熒;;隧道CRD法施工對地表不同結(jié)構(gòu)形式建筑物影響的對比分析[J];土木工程學(xué)報;2011年S1期

2 韋京;賀少輝;曹瑞瑯;孫明志;;雙洞隧道側(cè)穿既有建筑風(fēng)險分析和方案優(yōu)化研究[J];施工技術(shù);2014年13期

3 徐禮華;艾心熒;余佳力;李祺;何亞伯;;廈門機場路隧道施工對砌體結(jié)構(gòu)建筑物的影響分析[J];巖石力學(xué)與工程學(xué)報;2010年03期

相關(guān)博士學(xué)位論文 前2條

1 余佳力;城市隧道建設(shè)對地表建筑物的影響研究[D];武漢大學(xué);2012年

2 曹瑞瑯;考慮殘余強度和損傷的巖體應(yīng)力場—滲流場耦合理論研究及工程應(yīng)用[D];北京交通大學(xué);2013年

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本文編號：2000428