本文選題：CFG樁 + 軟弱地基��； 參考：《河北工業(yè)大學(xué)》2014年碩士論文

【摘要】：隨著我國(guó)經(jīng)濟(jì)的不斷發(fā)展，公路建設(shè)面臨的地質(zhì)環(huán)境開始變得日益復(fù)雜，我國(guó)幅員遼闊，從西部的黃土高原到東部沿海的沖積平原，甚至大西北的沙漠盆地，軟弱地基都有存在，特別是在東部沿海經(jīng)濟(jì)規(guī)模的擴(kuò)大，在基建方面的投入不斷增加的背景下，如何在軟弱地基上建設(shè)公路成為近年來(lái)公路行業(yè)面對(duì)的常見(jiàn)問(wèn)題，過(guò)量的沉降和不同結(jié)構(gòu)間的沉降失穩(wěn)是軟弱地基上公路建設(shè)面對(duì)的主要問(wèn)題。從房建行業(yè)引入的CFG樁法可以較好的處理這些問(wèn)題，通過(guò)長(zhǎng)時(shí)間的實(shí)踐和理論研究，可以發(fā)現(xiàn)CFG樁對(duì)于流沙區(qū)和淤泥質(zhì)區(qū)的軟弱地基的固定加固效果非常明顯，通過(guò)使用CFG樁對(duì)軟弱地基的加固，，使得軟弱地基的回彈模量達(dá)到基本的路用效果，保證了軟弱地基地區(qū)的沉降小于路用標(biāo)準(zhǔn)的要求。本文基于此應(yīng)用背景，分析了軟弱地基上使用CFG樁的理論計(jì)算原理，CFG樁上褥墊層的設(shè)置原理和操作方法，CFG樁的設(shè)計(jì)方法，CFG樁施工工藝和質(zhì)量控制，最后結(jié)合邢衡高速的施工實(shí)例，將靜載實(shí)驗(yàn)的結(jié)果與理論計(jì)算進(jìn)行了分析比對(duì)，對(duì)兩者的準(zhǔn)確性進(jìn)行了修正比較。
[Abstract]:With the development of our country's economy, the geological environment of highway construction is becoming more and more complicated. Our country has a vast territory, from the loess plateau in the west to the alluvial plain in the east coast, and even the desert basin in the northwest of China. Weak foundation exists, especially in the east coast economic scale expansion, the investment in the infrastructure is increasing, how to build the highway on the soft foundation has become a common problem in the highway industry in recent years. Excessive settlement and unstable settlement between different structures are the main problems of highway construction on weak foundation. The CFG pile method introduced from the housing construction industry can deal with these problems well. Through a long time of practice and theoretical research, it can be found that CFG pile is very effective in fixing and strengthening the soft foundation in the quicksand area and silt area. By using CFG pile to reinforce the soft foundation, the elastic modulus of the soft foundation reaches the basic road effect, and the settlement in the soft foundation area is less than the requirement of the road standard. Based on this application background, this paper analyzes the theoretical calculation principle of CFG pile on soft foundation and the setting principle and operation method of cushion layer on CFG pile. The design method of CFG pile is discussed in this paper, and the construction technology and quality control of CFG pile are discussed. Finally, combining with the example of Xingheng high speed construction, the results of the static load experiment are analyzed and compared with the theoretical calculation, and the accuracy of the two experiments is revised and compared.
【學(xué)位授予單位】：河北工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U416.1

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