本文關(guān)鍵詞： 雙排樁 滑坡推力分配 彈性理論 協(xié)調(diào)變形　出處：《西南交通大學(xué)》2007年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】： 雙排抗滑樁在實(shí)際工程中有廣泛的應(yīng)用，但對(duì)樁土相互作用機(jī)理尚不十分清楚，不同單位采用的計(jì)算模型和方法差別較大，給其合理的設(shè)計(jì)帶來(lái)較大的困難�；峦屏υ陔p排樁之間的傳遞分配是該問(wèn)題的關(guān)鍵，本文的目的就是建立雙排抗滑樁計(jì)算模型，，對(duì)樁土相互作用機(jī)理進(jìn)行研究，為設(shè)計(jì)計(jì)算提供依據(jù)。 論文總結(jié)分析了雙排抗滑樁的發(fā)展歷史和研究現(xiàn)狀。為研究雙排抗滑樁的樁土相互作用機(jī)理，探索滑坡推力在前排樁、后排樁的傳遞分配關(guān)系，首先應(yīng)用彈性力學(xué)或結(jié)構(gòu)力學(xué)方法得出了樁間土及前排樁、后排樁水平位移的計(jì)算公式，然后建立樁、土之間的變形協(xié)調(diào)方程，求解后得到前、后樁與樁間土之間的作用力。研究結(jié)果表明，雙排抗滑樁未帶連梁時(shí)，滑坡推力在前、后排樁之間的傳遞分配主要是通過(guò)樁土的相互擠壓作用宋完成的，體現(xiàn)在前后排樁的水平位移(撓度)的比較；當(dāng)增大后排樁的剛度或減小前排樁的剛度時(shí)，樁土相互擠壓作用越小，A_2/A_1隨之減小，反之則A_2/A_1增大；前后排樁的排距b′對(duì)滑坡推力在雙排抗滑樁之間的分配產(chǎn)生重要作用，當(dāng)增大排距b′時(shí)，A_2/A_1隨之增大；當(dāng)減小排距b′時(shí)，A_2/A_1隨之減��；隨著后排樁與前排樁的剛度比增大，A_1、A_2逐漸減小，A_2/A_1也逐漸減小，但當(dāng)剛度比達(dá)到一定值以后，A_1、A_2的變化幅度不大，A_2/A_1變化幅度也不大；雙排抗滑樁帶連梁時(shí)，滑坡推力在前、后排樁之間的傳遞分配，一方面是通過(guò)樁土的相互擠壓作用來(lái)完成的，同時(shí)也通過(guò)連梁傳遞分配；連梁傳遞了一定的滑坡推力，但當(dāng)與樁的剛度比增大到一定值以后，A_1、A_2的變化幅度不大，A_2/A_1變化幅度也不大。作為一個(gè)應(yīng)用實(shí)例，作者對(duì)三峽庫(kù)區(qū)萬(wàn)泉滑坡西區(qū)B滑坡的抗滑樁進(jìn)行了計(jì)算設(shè)計(jì)，結(jié)果表明，當(dāng)滑坡推力較大時(shí)，雙排抗滑樁較單排抗滑樁更為經(jīng)濟(jì)合理。
[Abstract]:Double-row anti-slide piles are widely used in practical engineering, but the mechanism of pile-soil interaction is not very clear, and the calculation models and methods used by different units are quite different. The distribution of landslide thrust between double-row piles is the key to this problem. The purpose of this paper is to establish a calculation model of double-row anti-slide piles. The mechanism of pile-soil interaction is studied, which provides the basis for design and calculation. In order to study the pile-soil interaction mechanism of double-row anti-slide piles, the transfer and distribution of landslide thrust in the front row pile and back row pile are explored. First, the formula of horizontal displacement of soil and pile in front row and back row is obtained by means of elastic mechanics or structural mechanics, then the equation of deformation coordination between pile and soil is established, and the solution is obtained. The research results show that the landslide thrust is in front of double-row anti-slide pile without connecting beam, and the transfer and distribution between back row pile and pile are mainly accomplished by the interaction of pile and soil. It is reflected in the comparison of horizontal displacement (deflection) of front and rear piles. When the stiffness of the back row pile is increased or the stiffness of the front row pile is reduced, the smaller the pile-soil squeezing action is, the smaller the Astack / A-1 ratio decreases, whereas the latter increases the A2 / A-1. The row distance b'of the front and rear row piles plays an important role in the distribution of landslide thrust between the two row anti-slide piles, and when the row distance b'is increased, the A / A / A 1 increases with the increase of the row distance. When the row distance B'is reduced, the number of As / A1 decreases. With the increase of the stiffness ratio of the rear pile to the front row pile, the ratio of A / A / A / A / T / 2 decreases gradually, but when the stiffness ratio reaches a certain value, the change of A1A / A2 is not large. There was also little change in A2 / A1s; In the case of double-row anti-slide pile with connecting beam, the transfer distribution of landslide thrust in front and back row pile is accomplished by the interaction of pile and soil on the one hand, and also by connecting beam on the other hand. Even the beam conveys a certain landslide thrust, but when the stiffness ratio of the pile increases to a certain value, the variation of A1 / A1 / A1 is not large, and so is the change of A2 / A1. As an application example. The authors have calculated and designed the anti-slide pile of B landslide in the west part of Wanquan landslide in the three Gorges Reservoir area. The results show that the double-row anti-slide pile is more economical and reasonable than the single-row anti-slide pile when the thrust of the landslide is large.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2007
【分類(lèi)號(hào)】：TU473.12

【引證文獻(xiàn)】

相關(guān)期刊論文 前6條

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2 徐建強(qiáng);任偉中;黃誠(chéng);;廣西某滑坡雙排抗滑樁加固設(shè)計(jì)[J];工程勘察;2011年09期

3 楊小珊;莫海鴻;陸兆成;陳俊生;;帶斜撐h形抗滑樁的力學(xué)機(jī)理研究[J];四川建筑科學(xué)研究;2013年04期

4 申永江;黃立;嚴(yán)克伍;;懸臂雙排樁樁排距的計(jì)算方法研究[J];水文地質(zhì)工程地質(zhì);2012年05期

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6 申永江;孫紅月;尚岳全;黃立;嚴(yán)克伍;;滑坡推力在懸臂式雙排抗滑樁上的分配[J];巖石力學(xué)與工程學(xué)報(bào);2012年S1期

相關(guān)博士學(xué)位論文 前2條

1 申永江;邊坡工程中抗滑樁的效果評(píng)價(jià)與優(yōu)化設(shè)計(jì)[D];浙江大學(xué);2009年

2 王輝;拱形抗滑樁墻結(jié)構(gòu)體系工作性能試驗(yàn)研究[D];長(zhǎng)安大學(xué);2011年

相關(guān)碩士學(xué)位論文 前10條

1 張亮;高速公路古老滑坡病害整治關(guān)鍵技術(shù)研究[D];中國(guó)鐵道科學(xué)研究院;2010年

2 陸兆成;帶斜撐h形抗滑樁結(jié)構(gòu)的研究與分析[D];華南理工大學(xué);2011年

3 姚旭東;雙排樁支擋結(jié)構(gòu)試驗(yàn)與數(shù)值分析[D];西南交通大學(xué);2008年

4 鄧夷明;雙排抗滑樁抗滑機(jī)理的研究[D];西南交通大學(xué);2008年

5 李俊飛;雙排埋入式抗滑樁工作機(jī)理分析與研究[D];重慶大學(xué);2009年

6 胡峰;基覆式滑坡中雙排全長(zhǎng)式與沉埋式抗滑樁受力規(guī)律研究[D];西南交通大學(xué);2010年

7 陳曦;雙排抗滑樁滑坡推力計(jì)算方法研究[D];西南交通大學(xué);2010年

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9 劉帥棟;門(mén)式框架結(jié)構(gòu)雙排樁內(nèi)力分析及計(jì)算[D];湖南大學(xué);2012年

10 江羅成;基于土拱效應(yīng)的雙排抗滑樁內(nèi)力與位移計(jì)算方法及試驗(yàn)研究[D];湖南大學(xué);2012年

本文編號(hào)：1445148