發(fā)布時間：2018-03-08 13:53

  本文選題：深基坑　切入點(diǎn)：支護(hù)樁　出處：《遼寧工程技術(shù)大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：市政地下工程和工業(yè)民用建筑中的深基坑支護(hù)技術(shù)與上部結(jié)構(gòu)一樣,近年來,無論在工程實(shí)踐還是理論研究方面都有很大進(jìn)展。深基坑支護(hù)結(jié)構(gòu)的選擇主要取決于安全和經(jīng)濟(jì)這兩個因素。由于深基坑工程對土體位移和土層沉降以及對周圍己有構(gòu)筑物和地下管線的影響較大,對深基坑支護(hù)結(jié)構(gòu)提出了更高的要求。另外隨著高層建筑的興起,以及復(fù)雜的地質(zhì)和水文地質(zhì)條件,使工程人員對支護(hù)結(jié)構(gòu)形式的選擇越來越復(fù)雜。止水帷幕技術(shù)的出現(xiàn)和發(fā)展解決了這一大難題。可以說,深基坑的支護(hù)形式和其設(shè)計(jì)、施工新技術(shù)是衡量一個國家建筑行業(yè)水準(zhǔn)的一個重要標(biāo)志。本文依托時代帝景地下25米深基坑項(xiàng)目,由于其復(fù)雜的地質(zhì)條件和水文條件,造成支護(hù)結(jié)構(gòu)形式選擇的困難,本文結(jié)合模糊綜合評價理論,創(chuàng)建深基坑支護(hù)結(jié)構(gòu)形式選擇的模糊層次評價體系,得出時代帝景深基坑工程的最佳支護(hù)方案為支護(hù)樁+錨桿+止水帷幕,同時利用有限元分析理論,使用MIDAS/GTS有限元分析軟件,針對時代帝景深基坑項(xiàng)目,重點(diǎn)分析了土體參數(shù)、灌注樁幾何性狀、錨桿參數(shù)的變化對支護(hù)結(jié)構(gòu)的影響,得出與支護(hù)結(jié)構(gòu)形式相關(guān)的各因素對其影響程度的大小,和最佳設(shè)計(jì)指標(biāo)。
[Abstract]:The deep foundation pit support technology in municipal underground works and industrial civil buildings is the same as the superstructure. In recent years, Great progress has been made in both engineering practice and theoretical research. The choice of deep foundation pit supporting structure mainly depends on two factors: safety and economy. Because of the displacement of soil and the settlement of soil layer and the surrounding area of deep foundation pit engineering, the selection of supporting structure of deep foundation pit depends mainly on two factors: safety and economy. The influence of existing structures and underground pipelines is great. In addition, with the rise of high-rise buildings and complicated geological and hydrogeological conditions, It makes the choice of support structure more and more complicated for engineers. The emergence and development of waterproof curtain technology solve this big problem. It can be said that the support form of deep foundation pit and its design, The new construction technology is an important symbol to measure the level of construction industry in a country. In this paper, it is difficult to select the support structure form because of its complicated geological and hydrological conditions, depending on the 25 meters deep foundation pit project of the times. Based on the theory of fuzzy comprehensive evaluation, this paper establishes a fuzzy hierarchy evaluation system for the selection of the supporting structure of deep foundation pit, and concludes that the best supporting scheme of the deep foundation pit engineering in the era is the waterproof curtain of supporting pile and anchor rod. At the same time, based on the theory of finite element analysis and MIDAS/GTS finite element analysis software, the influence of soil parameters, geometric properties of cast-in-place pile and anchor parameters on the supporting structure is analyzed. The degree of influence of various factors related to the form of supporting structure and the optimum design index are obtained.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU753

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本文編號：1584170