本文關(guān)鍵詞：深基坑地下連續(xù)墻支護(hù)結(jié)構(gòu)設(shè)計(jì)計(jì)算及數(shù)值模擬分析　出處：《河北工程大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 深基坑 地下連續(xù)墻 錨索 數(shù)值模擬 FLAC~(3D)有限差分

【摘要】：地下連續(xù)墻作為一種快速簡(jiǎn)便、可靠性高的基坑支護(hù)技術(shù)，已經(jīng)越來越多的應(yīng)用到了深基坑支護(hù)工程中。但是地下連續(xù)墻作為支護(hù)結(jié)構(gòu)一般不單獨(dú)使用，都會(huì)選擇采用地下連續(xù)墻—內(nèi)支撐或者地下連續(xù)墻—錨索等組合支護(hù)形式。目前對(duì)于地下連續(xù)墻—錨索支護(hù)結(jié)構(gòu)的作用機(jī)理和性狀的理論研究還遠(yuǎn)落后于工程實(shí)踐。故本文采用FLAC~(3D)有限差分法，，針對(duì)地下連續(xù)墻和錨索構(gòu)成的擋土支護(hù)技術(shù)進(jìn)行研究。研究?jī)?nèi)容包括： (1)從土體本構(gòu)關(guān)系、地下連續(xù)墻與錨索的模型以及它們與土體的接觸面模型出發(fā)，運(yùn)用FLAC~(3D)有限差分軟件建立地下連續(xù)墻—錨索復(fù)合支護(hù)的二維有限元模型。 (2)以邯鄲市某一深基坑工程為實(shí)例，對(duì)采用地下連續(xù)墻—錨索支護(hù)結(jié)構(gòu)運(yùn)用理正深基坑6.0設(shè)計(jì)軟件進(jìn)行設(shè)計(jì)計(jì)算，并用FLAC~(3D)有限差分軟件模擬分析，得到兩種軟件計(jì)算下的基坑位移和受力情況等結(jié)果。通過分析，研究了基坑的水平位移、地面沉降、坑底隆起，及開挖工況對(duì)位移的影響。同時(shí)，將理正深基坑6.0設(shè)計(jì)軟件的設(shè)計(jì)計(jì)算結(jié)果與數(shù)值模擬數(shù)據(jù)進(jìn)行比較，得出了兩者的差別。 (3)研究了施工附加荷載對(duì)基坑側(cè)移和沉降的影響。 (4)對(duì)地下連續(xù)墻—錨索支護(hù)的作用機(jī)理進(jìn)行了初步探討。 FLAC~(3D)有限差分軟件的模擬結(jié)果揭示出了地下連續(xù)墻—錨索支護(hù)體系的應(yīng)力場(chǎng)和位移場(chǎng)在開挖過程中的變化情況。由于地下連續(xù)墻和錨索的共同作用，可有效地控制基坑變形、提高基坑的穩(wěn)定性。實(shí)際工程的應(yīng)用情況表明，地下連續(xù)墻—錨索支護(hù)結(jié)構(gòu)能適用于地質(zhì)環(huán)境復(fù)雜、對(duì)基坑變形要求嚴(yán)格的深基坑和邊坡工程。 本研究成果對(duì)進(jìn)一步認(rèn)識(shí)地下連續(xù)墻—錨索支護(hù)結(jié)構(gòu)作用機(jī)理、指導(dǎo)其在實(shí)際工程中的應(yīng)用具有一定的借鑒意義。
[Abstract]:As a fast, simple and reliable foundation pit supporting technology, underground continuous wall has been used more and more in deep foundation pit support engineering, but underground continuous wall as a supporting structure is generally not used alone. The combination of underground continuous wall and internal support or underground continuous wall and anchor cable will be adopted. At present, the theoretical study on the mechanism and behavior of underground continuous wall and anchor cable support structure is far behind the engineering practice. Therefore, this article uses FLACU (. 3D) finite difference method. This paper studies the retaining technology of underground continuous wall and anchor cable. The research contents include: 1) proceed from the constitutive relation of soil, the model of underground continuous wall and anchor cable, and the contact surface model between them and soil. The finite element model of underground continuous wall and anchor cable composite support is established by using FLACU 3D finite difference software. Taking a deep foundation pit project in Handan city as an example, the design calculation of underground continuous wall and anchor cable supporting structure is carried out by using the design software of Lizheng deep foundation pit 6.0. The results of foundation pit displacement and stress under two kinds of software are obtained by using finite difference software FLACU 3D. The horizontal displacement and ground subsidence of foundation pit are studied by analysis. At the same time, the design and calculation results of Lizheng deep foundation pit 6.0 design software are compared with the numerical simulation data, and the difference between them is obtained. The influence of additional load on the lateral displacement and settlement of foundation pit is studied. The mechanism of underground continuous wall-anchor support is discussed. FLACU 3D). The simulation results of finite difference software reveal the variation of stress field and displacement field in the excavation process of underground continuous wall and anchor cable support system due to the joint action of underground continuous wall and anchor cable. It can effectively control the deformation of foundation pit and improve the stability of foundation pit. The application of practical engineering shows that the underground continuous wall and anchor cable support structure can be used in complex geological environment. Deep foundation pit and slope engineering with strict requirements for foundation pit deformation. The research results have some reference significance for further understanding the action mechanism of underground continuous wall and anchor cable supporting structure and guiding its application in practical engineering.
【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】：2013
【分類號(hào)】：TU473.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 賈堅(jiān);軟土?xí)r空效應(yīng)原理在基坑工程中的應(yīng)用[J];地下空間與工程學(xué)報(bào);2005年04期

2 張彬,王釗,彭亞明,張偉,馬天駿;土本構(gòu)模型研究的現(xiàn)狀及展望[J];桂林工學(xué)院學(xué)報(bào);2003年03期

3 高文華,楊林德,沈蒲生;香港廣場(chǎng)深基坑圍護(hù)結(jié)構(gòu)變形的時(shí)空效應(yīng)分析[J];湖南大學(xué)學(xué)報(bào)(自然科學(xué)版);2000年01期

4 范鵬,焦蒼,徐成家;SMW攪拌樁圍護(hù)基坑的時(shí)空效應(yīng)分析[J];隧道建設(shè);2005年01期

5 呂鳳梧,徐偉;軟土地基深基坑開挖的時(shí)空效應(yīng)研究與應(yīng)用[J];建筑施工;1997年05期

6 張燕凱,桂國慶,趙撫民;深基坑工程中考慮開挖深度和時(shí)間效應(yīng)的土壓力計(jì)算公式的探討[J];南昌大學(xué)學(xué)報(bào)(工科版);2002年01期

7 趙玉杰;趙善國;;山肩邦男法在地下連續(xù)墻設(shè)計(jì)中的應(yīng)用[J];黑龍江水利科技;2012年03期

8 范益群,鐘萬勰,劉建航;時(shí)空效應(yīng)理論與軟土基坑工程現(xiàn)代設(shè)計(jì)概念[J];清華大學(xué)學(xué)報(bào)(自然科學(xué)版);2000年S1期

9 趙海燕,黃金枝;深基坑支護(hù)結(jié)構(gòu)變形的三維有限元分析與模擬[J];上海交通大學(xué)學(xué)報(bào);2001年04期

10 劉寶琛;急待深入研究的地鐵建設(shè)中的巖土力學(xué)課題[J];鐵道建筑技術(shù);2000年03期

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