發(fā)布時(shí)間：2018-04-16 16:33

  本文選題：基坑變形 + 監(jiān)測(cè)數(shù)據(jù)��； 參考：《華南理工大學(xué)》2013年碩士論文

【摘要】：隨著城市建設(shè)快速發(fā)展，大量高層建筑工程的涌現(xiàn)，有限的土地資源無(wú)法滿足人們的需求，使得地下空間的開(kāi)發(fā)和利用愈發(fā)得到重視。地下空間施工過(guò)程對(duì)周圍建筑物的影響較大，必須對(duì)施工過(guò)程中的位移和變形實(shí)時(shí)監(jiān)測(cè)。基坑的實(shí)時(shí)監(jiān)測(cè)不僅能在施工過(guò)程中起到指導(dǎo)作用，還能對(duì)長(zhǎng)期的安全性做預(yù)測(cè)和分析。本文論述了深基坑工程開(kāi)挖和支護(hù)的發(fā)展現(xiàn)狀，側(cè)重分析深基坑支護(hù)結(jié)構(gòu)類型；研究影響深基坑工程安全性問(wèn)題，主要有設(shè)計(jì)不當(dāng)、時(shí)空效應(yīng)考慮不周、現(xiàn)場(chǎng)監(jiān)測(cè)影響等幾個(gè)因素，重點(diǎn)研究基坑監(jiān)測(cè)技術(shù)對(duì)基坑的數(shù)值分析起到的重要作用。本文依托廣州市軌道交通六號(hào)線工程大坦沙主變電站深基坑工程實(shí)施過(guò)程，從深基坑開(kāi)挖過(guò)程中基坑位移、變形及安全性入手，采取ANSYS有限元分析軟件模擬基坑施工過(guò)程，基于現(xiàn)場(chǎng)監(jiān)測(cè)數(shù)據(jù)調(diào)整模型物理力學(xué)參數(shù)，為基坑開(kāi)挖的每個(gè)工況進(jìn)行安全性分析。本文主要進(jìn)行的工作如下： （1）根據(jù)現(xiàn)場(chǎng)工程地質(zhì)條件，利用有限元程序ANSYS進(jìn)行分層開(kāi)挖的三維模擬，分析基坑支護(hù)變化過(guò)程。 （2）與實(shí)際監(jiān)測(cè)數(shù)據(jù)比較，經(jīng)過(guò)參數(shù)反演調(diào)整模型參數(shù)，，對(duì)基坑每一工況進(jìn)行安全性分析，指導(dǎo)下一工況的進(jìn)行。 （3）將模擬結(jié)果與監(jiān)測(cè)結(jié)果進(jìn)行誤差分析，結(jié)果顯示經(jīng)過(guò)參數(shù)調(diào)整的該模型誤差小、適應(yīng)性強(qiáng)。 本文數(shù)值模擬的結(jié)果與監(jiān)測(cè)數(shù)據(jù)反映的規(guī)律基本一致，對(duì)基坑安全性起到較好的預(yù)測(cè)，說(shuō)明本文研究結(jié)果對(duì)類似的工程實(shí)例具有一定的參考作用，在基坑安全性分析工程中具有一定的應(yīng)用前景。
[Abstract]:With the rapid development of urban construction and the emergence of a large number of high-rise building projects, limited land resources can not meet the needs of people, making the development and utilization of underground space more and more attention.The construction process of underground space has a great influence on the surrounding buildings, so it is necessary to monitor the displacement and deformation in the construction process in real time.The real-time monitoring of foundation pit can not only play a guiding role in the construction process, but also predict and analyze the long-term safety.In this paper, the development of deep foundation pit excavation and support is discussed, and the types of deep foundation pit supporting structure are emphatically analyzed, and the problems affecting the safety of deep foundation pit engineering are mainly discussed, such as improper design and inadequate consideration of space-time effect.This paper mainly studies the important role of foundation pit monitoring technology in numerical analysis of foundation pit.Based on the implementation process of deep foundation pit in Datansha Substation of Guangzhou Rail Transit Line 6, this paper starts with the displacement, deformation and safety of deep foundation pit, and adopts ANSYS finite element analysis software to simulate the construction process of foundation pit.Based on the field monitoring data, the physical and mechanical parameters of the model are adjusted, and the safety analysis is carried out for each working condition of foundation pit excavation.The main work of this paper is as follows:1) according to the field engineering geological conditions, the three-dimensional simulation of layered excavation is carried out by using the finite element program ANSYS, and the changing process of foundation pit support is analyzed.2) comparing with the actual monitoring data, the model parameters are adjusted by parameter inversion, and the safety analysis of each working condition of foundation pit is carried out to guide the next working condition.3) error analysis of simulation and monitoring results shows that the model with parameter adjustment has small error and strong adaptability.The result of numerical simulation in this paper is basically consistent with the law reflected by monitoring data, which has a good prediction on the safety of foundation pit. It shows that the research results in this paper have certain reference function for similar engineering examples.It has certain application prospect in foundation pit safety analysis engineering.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU473.2

【參考文獻(xiàn)】

中國(guó)期刊全文數(shù)據(jù)庫(kù) 前10條

1 黃小明;黃清明;朱善鏗;;軟土地區(qū)深基坑施工監(jiān)測(cè)的實(shí)踐與思考[J];城市勘測(cè);2006年02期

2 陳國(guó)榮,姜弘道,高謙,劉大安;高速公路路基性態(tài)反分析及沉降預(yù)報(bào)[J];工程地質(zhì)學(xué)報(bào);1998年04期

3 武亞軍,盧文閣,欒茂田,侯仰杰;深基坑支護(hù)結(jié)構(gòu)優(yōu)化設(shè)計(jì)探討[J];建筑結(jié)構(gòu);2000年11期

4 黃秋林,邱冬煒;深基坑變形監(jiān)測(cè)及數(shù)據(jù)處理[J];山西建筑;2005年01期

5 常洪德;;淺談深基坑支護(hù)中存在的問(wèn)題及應(yīng)對(duì)措施[J];山西建筑;2006年23期

6 潘洪科,饒運(yùn)章;神經(jīng)元網(wǎng)絡(luò)在基坑工程變形預(yù)報(bào)中的應(yīng)用研究[J];南方冶金學(xué)院學(xué)報(bào);2000年04期

7 侯學(xué)淵,劉國(guó)彬,黃院雄;城市基坑工程發(fā)展的幾點(diǎn)看法[J];施工技術(shù);2000年01期

8 曹紅林,王靖濤;用小波神經(jīng)網(wǎng)絡(luò)預(yù)測(cè)深基坑周圍地表的沉降量[J];土工基礎(chǔ);2003年04期

9 任麗芳;穆蘭;杜玉林;;深基坑工程安全監(jiān)測(cè)和信息化監(jiān)控[J];石家莊鐵路職業(yè)技術(shù)學(xué)院學(xué)報(bào);2006年02期

10 吳來(lái)明;廣州地鐵海珠廣場(chǎng)站超深基坑土石方的施工[J];西部探礦工程;2000年06期

中國(guó)博士學(xué)位論文全文數(shù)據(jù)庫(kù) 前1條

1 鄧子勝;深基坑支護(hù)結(jié)構(gòu)—土空間非線性共同作用研究[D];湖南大學(xué);2004年

本文編號(hào)：1759762