本文選題：相鄰深基坑 + 有限元法��； 參考：《長(zhǎng)沙理工大學(xué)》2013年碩士論文

【摘要】：隨著我國(guó)城市建設(shè)的不斷發(fā)展，各大城市都正在興建或準(zhǔn)備興建地鐵。城市地鐵的修建過程中涉及到大量的深基坑工程，并且常常是處于密集建筑區(qū)內(nèi)，就不免出現(xiàn)深基坑施工和周圍建筑物的相互影響問題。對(duì)于這類相鄰施工問題，，大量學(xué)者已經(jīng)認(rèn)識(shí)到以往的基坑工程強(qiáng)度設(shè)計(jì)理論已經(jīng)不能滿足工程周圍環(huán)境的安全性要求，越來越嚴(yán)格的基坑工程變形控制要求運(yùn)用到實(shí)際工程之中，但相鄰問題仍然還有許多需要解決的難題。 本文結(jié)合長(zhǎng)沙市南湖路地鐵車站基坑工程和其附近的高層建筑地基深基坑工程，研究相鄰深基坑在施工過程中相互作用導(dǎo)致基坑應(yīng)力場(chǎng)、位移場(chǎng)以及坑周土體的變化情況。主要內(nèi)容有： 1．參考國(guó)內(nèi)外的有關(guān)文獻(xiàn)和資料，選取三維有限元數(shù)值模擬方案，確定土體、支護(hù)結(jié)構(gòu)的計(jì)算參數(shù)。 2．地鐵車站基坑先開挖寫字樓基坑慢開挖時(shí)，考慮地鐵車站基坑的存在對(duì)寫字樓基坑開挖的圍護(hù)結(jié)構(gòu)變形和坑周土體的影響以及寫字樓基坑的開挖對(duì)開挖完成的地鐵車站基坑變形的影響。 3．不同的施工順序?qū)ο噜徎拥挠绊�。考慮三種施工順序（車站基坑先開挖樓基坑慢開挖、兩基坑對(duì)稱開挖、樓基坑先開挖車站基坑慢開挖）下兩基坑變形的變形情況，比較不同施工順序下基坑的變形。 4．基坑間距對(duì)相鄰基坑的影響。考慮兩基坑施工順序一定，基坑距離為5m、10m、15m、20m時(shí)，兩基坑的變形和坑周土體的變形情況，得出基坑變形和坑周土體變形隨著距離不同的變化規(guī)律。
[Abstract]:With the continuous development of urban construction in China, all major cities are building or preparing to build subway. The construction process of urban subway involves a large number of deep foundation pit projects, and is often in the dense building area, so the interaction between the construction of deep foundation pit and the surrounding buildings will inevitably occur. For this kind of adjacent construction problem, a large number of scholars have realized that the previous foundation pit engineering strength design theory can no longer meet the safety requirements of the surrounding environment of the project. More and more strict foundation pit engineering deformation control requirements are applied to practical engineering, but there are still many problems that need to be solved. In this paper, the stress field, displacement field and soil around the pit of adjacent deep foundation pit caused by interaction between adjacent deep foundation pit during construction are studied by combining the foundation pit engineering of Nanhu Road subway station and its surrounding high-rise building in Changsha City. The main contents are: 1. Referring to the relevant literature and data at home and abroad, the three-dimensional finite element numerical simulation scheme is selected to determine the calculation parameters of soil and supporting structure. 2. When the subway station foundation pit is first excavated, the office building foundation pit is slowly excavated, Considering the influence of the foundation pit of subway station on the deformation of the surrounding structure and the soil around the pit and the influence of the excavation of the office building foundation pit on the deformation of the subway station foundation pit completed by the excavation. 3. The influence of different construction sequence on adjacent foundation pit. Considering three kinds of construction sequence (slow excavation of station foundation pit, symmetrical excavation of two foundation pit, slow excavation of station foundation pit first), the deformation of foundation pit under different construction sequence is compared. 4. The influence of foundation pit spacing on adjacent foundation pit. Considering the constant construction sequence of the two foundation pits and the deformation of the soil around the pit when the distance of the foundation pit is 5 m ~ 10 m or 15 m ~ 20 m, the variation law of the deformation of the foundation pit and the soil around the pit with the distance is obtained.
【學(xué)位授予單位】：長(zhǎng)沙理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU753

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 姚燕明,周順華,孫巍,陳緒祿;坑底加固對(duì)平行換乘車站基坑變形影響的計(jì)算分析[J];地下空間;2004年01期

2 曾遠(yuǎn),李志高,王毅斌;基坑開挖對(duì)鄰近地鐵車站影響因素研究[J];地下空間與工程學(xué)報(bào);2005年04期

3 劉建航,劉國(guó)彬,范益群;軟土基坑工程中時(shí)空效應(yīng)理論與實(shí)踐(下)[J];地下工程與隧道;1999年04期

4 蔣洪勝,侯學(xué)淵;基坑開挖對(duì)臨近軟土地鐵隧道的影響[J];工業(yè)建筑;2002年05期

5 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

6 王均星,李永明,李澤;重力壩的塑性極限分析法[J];水利學(xué)報(bào);2004年08期

7 楊敏;趙錫宏;;分層土中的單樁分析法[J];同濟(jì)大學(xué)學(xué)報(bào)(自然科學(xué)版);1992年04期

8 劉國(guó)彬,黃院雄,侯學(xué)淵;基坑工程下已運(yùn)行地鐵區(qū)間隧道上抬變形的控制研究與實(shí)踐[J];巖石力學(xué)與工程學(xué)報(bào);2001年02期

9 伍尚勇;楊小平;劉庭金;;雙側(cè)深基坑施工對(duì)緊鄰地鐵隧道變形影響的分析[J];巖石力學(xué)與工程學(xué)報(bào);2012年S1期

10 章楊松;陳新民;;多支撐擋墻邊坡穩(wěn)定性的強(qiáng)度參數(shù)折減有限元分析[J];巖土工程學(xué)報(bào);2006年11期

相關(guān)會(huì)議論文 前1條

1 賈堅(jiān);劉建航;侯學(xué)淵;;上海城市建設(shè)中深基坑的安全穩(wěn)定性控制[A];工程安全及耐久性——中國(guó)土木工程學(xué)會(huì)第九屆年會(huì)論文集[C];2000年

相關(guān)博士學(xué)位論文 前2條

1 吳小將;同站廳平行換乘地鐵車站深基坑施工變形控制研究[D];同濟(jì)大學(xué);2006年

2 劉燕;地鐵換乘樞紐后建車站施工影響研究[D];同濟(jì)大學(xué);2007年

相關(guān)碩士學(xué)位論文 前1條

1 張亞奎;深基坑開挖對(duì)近鄰建筑物變形影響的研究[D];北京工業(yè)大學(xué);2003年

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