【摘要】：伴隨著我國城鎮(zhèn)化進程的快速推進,工民用建筑及基礎(chǔ)設(shè)施工程中的地下空間開發(fā)已逐漸成為工程建設(shè)的重要組成部分,特別是深基坑工程發(fā)展異常迅速,基坑開挖深度越來越深、面積越來越大,對其技術(shù)的要求亦愈來愈高。因此,基坑工程設(shè)計特別是施工圖階段的優(yōu)化設(shè)計工作更顯得尤為重要。作為一門綜合性土木工程學(xué)科分支,基坑支護結(jié)構(gòu)設(shè)計不僅涉及巖土工程、結(jié)構(gòu)工程及施工工藝等多方面內(nèi)容,且由于巖土工程的復(fù)雜性、不確定性、地域差異性,不同的設(shè)計人員,對于同一工程可能會因各自規(guī)劃設(shè)計理念不同而選擇不同的支護形式,即使應(yīng)用同種支護形式,設(shè)其計結(jié)果也可能不盡相同。本文通過基坑工程現(xiàn)狀研究描述、變形規(guī)律分析、支護結(jié)構(gòu)選型及應(yīng)用軟件介紹為基礎(chǔ),以優(yōu)化設(shè)計為切入點,通過優(yōu)化理論與實際工程的淺析研究,簡述其在深基坑工程中的應(yīng)用。 結(jié)合工程實例的優(yōu)化分析中,對于支護結(jié)構(gòu)的內(nèi)力計算與變形控制常是基坑優(yōu)化設(shè)計的關(guān)鍵節(jié)點之二。許多基坑工程事故往往由于內(nèi)力計算與變形控制取值不當(dāng),導(dǎo)致工程設(shè)計過于保守、造價浪費,加大建設(shè)投資；反之,則會造成設(shè)計失效、出現(xiàn)工程事故,引起更大的經(jīng)濟損失。 本文引用大連市某已建基坑工程為實例,通過系統(tǒng)優(yōu)化選型及計算優(yōu)化分析,以成本工程造價為目標(biāo)函數(shù),展開優(yōu)化設(shè)計研究工作,進行支護結(jié)構(gòu)的彎矩、內(nèi)力及樁頂水平位移分析,在深基坑工程系統(tǒng)優(yōu)化設(shè)計與選定方案計算優(yōu)化設(shè)計的基礎(chǔ)上,最終選取較為適合的樁錨體系支護體系為本文的研究結(jié)果,從而使所研究基坑工程在安全、經(jīng)濟、適用的前提下,得出較為合理經(jīng)濟的優(yōu)化分析結(jié)果。
[Abstract]:With the rapid development of urbanization in China, the development of underground space in civil and industrial buildings and infrastructure projects has gradually become an important part of engineering construction, especially the development of deep foundation pit engineering is extremely rapid. The excavation depth and area of foundation pit are getting deeper and larger, and the technical requirements are becoming higher and higher. Therefore, the optimization of foundation pit engineering design, especially in the construction drawing stage, is especially important. As a branch of comprehensive civil engineering, foundation pit support structure design not only involves geotechnical engineering, structural engineering and construction technology, but also because of the complexity, uncertainty and regional difference of geotechnical engineering. Different designers may choose different support forms for the same project because of their different planning and design concepts. Even if the same support form is applied, the calculation results may be different. Based on the research description of foundation pit engineering, the analysis of deformation law, the selection of supporting structure and the introduction of application software, this paper takes the optimization design as the breakthrough point, and analyzes and studies the optimization theory and practice engineering. Its application in deep foundation pit engineering is briefly described. In combination with the optimization analysis of engineering examples, the calculation of internal force and deformation control of supporting structure are often the key nodes in the optimization design of foundation pit. Many foundation pit engineering accidents are often due to improper calculation of internal force and deformation control, resulting in the engineering design is too conservative, cost waste, and increase construction investment; On the contrary, it will cause design failure, engineering accidents, causing greater economic losses. In this paper, an example of an existing foundation pit project in Dalian City is cited. Through system optimization selection and calculation and optimization analysis, taking cost engineering cost as objective function, the optimization design research work is carried out, and the bending moment of supporting structure is carried out. Based on the analysis of internal force and horizontal displacement of pile top, on the basis of the optimization design of deep foundation pit engineering system and the calculation and optimization design of selected scheme, the more suitable supporting system of pile and anchor system is selected as the research result of this paper. Therefore, under the premise of safety, economy and applicability, the optimum analysis results of the foundation pit works studied are more reasonable and economical.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU753

【參考文獻】

相關(guān)期刊論文 前10條

1 徐宜和;;基坑工程技術(shù)現(xiàn)狀分析[J];四川建筑科學(xué)研究;2005年06期

2 孫靜;;我國基坑工程發(fā)展現(xiàn)狀綜述[J];黑龍江水專學(xué)報;2010年01期

3 董明鋼,楊峰;我國深基抗工程的現(xiàn)狀和亟待解決的問題[J];建筑技術(shù);2004年05期

4 姚愛國,SmithIM;彈塑性有限元模擬分析影響基坑位移的因素[J];煤田地質(zhì)與勘探;2000年06期

5 楊曉軍,龔曉南;基坑開挖中考慮水壓力的土壓力計算[J];土木工程學(xué)報;1997年04期

6 俞建霖,龔曉南;基坑工程變形性狀研究[J];土木工程學(xué)報;2002年04期

7 李琳;楊敏;熊巨華;;軟土地區(qū)深基坑變形特性分析[J];土木工程學(xué)報;2007年04期

8 黃茂松;王衛(wèi)東;鄭剛;;軟土地下工程與深基坑研究進展[J];土木工程學(xué)報;2012年06期

9 李鐘;深基坑支護技術(shù)現(xiàn)狀及發(fā)展趨勢(一)[J];巖土工程界;2001年01期

10 劉剛;田開洋;;深基坑支護變形機理及實例分析[J];巖土工程界;2008年01期

相關(guān)博士學(xué)位論文 前4條

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

2 周世良;格柵加筋土擋墻結(jié)構(gòu)特性及破壞機理研究[D];重慶大學(xué);2005年

3 徐中華;上海地區(qū)支護結(jié)構(gòu)與主體地下結(jié)構(gòu)相結(jié)合的深基坑變形性狀研究[D];上海交通大學(xué);2007年

4 張光永;土本構(gòu)關(guān)系及數(shù)值建模[D];華中科技大學(xué);2007年

相關(guān)碩士學(xué)位論文 前5條

1 孫慶;沖擊擠密作用下土體變形機理的有限元分析與實驗研究[D];吉林大學(xué);2007年

2 于少春;深基坑工程支護方案的優(yōu)選和周邊建筑物沉降的預(yù)測[D];遼寧工程技術(shù)大學(xué);2007年

3 曹小兵;貴州山區(qū)深基坑變形的有限元分析[D];貴州大學(xué);2007年

4 池鵬;深基坑圍護結(jié)構(gòu)變形規(guī)律監(jiān)測及其優(yōu)化研究[D];西安科技大學(xué);2008年

5 趙明;基坑開挖降水對周圍建筑物沉降影響的研究[D];山東大學(xué);2009年

，

本文編號：2361533