本文選題：錨桿 + 樁　； 參考：《石家莊經(jīng)濟學院》2015年碩士論文

【摘要】：樁錨支護體系是基坑支護結(jié)構(gòu)中最常用的一種,單純的分析結(jié)構(gòu)本身的受力、變形是比較容易的,關(guān)鍵在于土體是復(fù)雜的三項體,沒有完全一致的力學特性,且樁錨體系中,錨桿的拉力來自于土體,土體受到的影響較為復(fù)雜;現(xiàn)行規(guī)范中樁體受到的土壓力一般都是按照比較理想的水土合算或水土分算進行計算,其結(jié)果常與實際情況有出入。本論文大致分為兩部分:第一部分,純理論部分,主要簡述了錨桿與巖、土體的相互作用、樁土相互作用以及樁錨協(xié)調(diào)作用。第二部分主要是在以北京某研發(fā)中心深基坑樁錨支護作為分析案例的背景下,在考慮滲流與不考慮滲流的情況下,計算了樁體兩側(cè)土壓力的區(qū)別以及樁體變形。再用理正深基坑7.0軟件以及Plaxis有限元軟件對基坑土壓力以及樁體變形進行了模擬、計算。將各計算結(jié)果對比基坑監(jiān)測數(shù)據(jù),分析了其各種方法的差異性。就此基坑工程而言,Plaxis軟件模擬的樁體位移結(jié)果較理正深基坑7.0軟件更接近監(jiān)測數(shù)據(jù);樁體兩側(cè)的土壓力值在考慮滲流的水土分算的情況下更符合實際情況;土壓力計算的彈性法(m法即彈性支點法)較經(jīng)典法更合乎邏輯也更符合實際。
[Abstract]:The pile-anchor support system is the most commonly used one in the foundation pit supporting structure. It is easy to analyze the force of the structure itself and the deformation is relatively easy. The key is that the soil is a complex three-item body, without completely consistent mechanical properties, and in the pile-anchor system, The tensile force of anchor rod comes from soil and the influence of soil is more complex. The soil pressure of pile is calculated according to the ideal soil and water cost or soil and water distribution, and the results are often different from the actual situation. This paper is divided into two parts: the first part, pure theory part, mainly describes the interaction between anchor rod and rock, soil, pile-soil interaction and pile-anchor coordination. In the second part, the difference of soil pressure on both sides of pile body and the deformation of pile body are calculated under the background of pile anchor support of deep foundation pit of a research and development center in Beijing as an analysis case, considering seepage and not considering seepage. The earth pressure and pile deformation of the foundation pit are simulated and calculated by the software of Lizheng 7.0 and Plaxis finite element software. The results of calculation are compared with the monitoring data of foundation pit, and the differences of various methods are analyzed. The displacement result of pile simulated by Plaxis software is closer to the monitoring data than that of the plumb foundation pit 7.0 software, and the soil pressure on both sides of the pile is more in line with the actual situation when considering the soil and water distribution of seepage. The elastic method (elastic fulcrum method) is more logical and practical than the classical method.
【學位授予單位】：石家莊經(jīng)濟學院
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TU476

【參考文獻】

相關(guān)期刊論文 前10條

1 王洪濤;王琦;尤春安;李術(shù)才;王德超;王新;;考慮土體非均質(zhì)和各向異性的錨索極限抗拔力研究[J];巖土力學;2013年08期

2 尤春安;戰(zhàn)玉寶;劉秋媛;孫琳琳;王開彬;;預(yù)應(yīng)力錨索錨固段的剪滯-脫黏模型[J];巖石力學與工程學報;2013年04期

3 張如林;徐奴文;;基于PLAXIS的深基坑支護設(shè)計的數(shù)值模擬[J];結(jié)構(gòu)工程師;2010年02期

4 付先進;林作忠;;基于plaxis的超深基坑開挖彈塑性有限元數(shù)值計算與分析[J];中國水運(下半月);2010年04期

5 丁瑜;王全才;何思明;;拉力分散型錨索錨固段荷載傳遞機制[J];巖土力學;2010年02期

6 郝峰;;高壓旋噴樁復(fù)合土釘墻Plaxis有限元分析[J];探礦工程(巖土鉆掘工程);2009年09期

7 曾憲明;趙林;李世民;林大路;;錨固類結(jié)構(gòu)桿體臨界錨固長度與判別方法試驗研究[J];巖土工程學報;2008年S1期

8 嚴薇;曾友誼;王維說;;深基坑樁錨支護結(jié)構(gòu)變形和內(nèi)力分析方法探討[J];重慶大學學報;2008年03期

9 歐吉青;;某深基坑樁錨支護體系計算方法與結(jié)果分析[J];南華大學學報(自然科學版);2007年03期

10 方理剛;孫正兵;王強;;樁錨加固邊坡的作用機理和穩(wěn)定性分析研究[J];公路工程;2007年04期

，

本文編號：2038850