【摘要】：進入新世紀以來,我國已經進入一個快速發(fā)展的時期,城市化的進程也不斷加快。隨著城市規(guī)模的不斷擴張,使得城市人口數(shù)量激增,社會資源過度集中。同時,由于城市地面空間有限,容易導致城市交通問題。為了緩解地面交通壓力,城市地鐵建設已經成了必然趨勢。而由于城市建筑物過度集中,地鐵施工時,地下隧道難免會下穿建筑物,從而容易對建筑物造成不利的影響。為了保證地鐵施工和建筑物使用的安全性,國內外一些相關研究者做了很多相關的分析,并取得了一些重大成果。本文以南昌地鐵一號線中山路區(qū)段為背景,研究了地鐵下穿既有建筑物的建筑物安全措施,主要內容如下:1、介紹了本次課題的研究背景以及研究意義,在總結和整理國內外學者的研究成果基礎上,分析當前的研究現(xiàn)狀。并且,簡單介紹了本次課題的主要研究內容以及方法。2、詳細介紹盾構開挖的施工原理以及施工工序,重點分析了盾構施工引起土體變形的原理,在理論分析和實踐經驗的基礎上,提出預防地表變形的相應控制措施。3、通過對相關規(guī)范的學習研究,介紹了建筑物受盾構施工影響的評價標準,同時,進行了盾構開挖對建筑物影響的機理分析,并提出了減小不利影響的控制措施。4、根據(jù)具體的實際工程和資料數(shù)據(jù),對建筑結構本身進行檢測和鑒定。然后,利用有限元軟件SAP2000模擬盾構施工對建筑物的影響,建立三維模型對結構進行受力和位移分析。根據(jù)軟件分析結果,提出相應的風險鑒定以及建筑物加固建議。最后,提出相應的施工現(xiàn)場監(jiān)測方案,對監(jiān)測點的布置進行詳細介紹。
[Abstract]:Since the beginning of the new century, China has entered a period of rapid development, and the process of urbanization is also accelerating. With the continuous expansion of the scale of the city, the number of urban population is soaring and the social resources are too concentrated. At the same time, due to the limited urban ground space, it is easy to lead to urban traffic problems. In order to alleviate the pressure of ground traffic, urban subway construction has become an inevitable trend. Due to the excessive concentration of urban buildings, the underground tunnel will inevitably pass through the building during subway construction, which is easy to have a negative impact on the building. In order to ensure the safety of subway construction and building use, some relevant researchers at home and abroad have done a lot of relevant analysis, and achieved some significant results. Based on the Zhongshan Road section of Nanchang Metro Line 1, this paper studies the building safety measures of existing buildings under the subway. The main contents are as follows: 1. The research background and significance of this subject are introduced. On the basis of summing up and sorting out the research results of scholars at home and abroad, the current research status is analyzed. Moreover, the main research contents and methods of this subject are briefly introduced. 2, the construction principle and construction procedure of shield excavation are introduced in detail, and the principle of soil deformation caused by shield construction is analyzed emphatically. on the basis of theoretical analysis and practical experience, the corresponding control measures to prevent surface deformation are put forward. 3, through the study and research of relevant codes, the evaluation criteria of buildings affected by shield construction are introduced. At the same time, the mechanism of the influence of shield excavation on the building is analyzed, and the control measures to reduce the adverse effects are put forward. 4, according to the specific actual engineering and data, the building structure itself is detected and identified. Then, the finite element software SAP2000 is used to simulate the influence of shield construction on the building, and a three-dimensional model is established to analyze the force and displacement of the structure. According to the results of software analysis, the corresponding risk identification and building reinforcement suggestions are put forward. Finally, the corresponding construction site monitoring scheme is put forward, and the layout of monitoring points is introduced in detail.
【學位授予單位】：南昌大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U231.3;TU433

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本文編號：2499949