本文選題：U型鋼板樁 + 鎖口��； 參考：《華南理工大學(xué)》2015年碩士論文

【摘要】：鋼板樁作為一種新型環(huán)保材料在工程建設(shè)領(lǐng)域得到越來越多的重視和應(yīng)用。作為一種柔性支護(hù)結(jié)構(gòu),鋼板樁具有輕質(zhì)、高強(qiáng)、隔水性好、施工方便等優(yōu)點(diǎn)。由于U型鋼板樁特殊的構(gòu)造和鎖口連接方式,在U型鋼板樁實(shí)際工作中,樁間鎖口會(huì)發(fā)生相對(duì)滑移從而使U型鋼板樁組合墻的截面抗彎剛度和強(qiáng)度發(fā)生折減。這導(dǎo)致U型鋼板樁組合墻的實(shí)際截面抗彎剛度和強(qiáng)度成為了一個(gè)不確定的量,給工程設(shè)計(jì)中的支護(hù)結(jié)構(gòu)的變形計(jì)算和強(qiáng)度驗(yàn)算帶來了難題。本文主要從鋼板樁鎖口間摩擦的角度來探究在以鎖口間摩擦力承擔(dān)剪力的情況下,摩擦力對(duì)U型鋼板樁墻截面抗彎剛度的影響。本文以U型鋼板樁組合墻一個(gè)對(duì)稱循環(huán)單位體為研究對(duì)象,通過建立鋼板樁截面上的靜力平衡方程和接觸面上的力矩平衡方程來探究樁墻截面抗彎剛度與摩擦作用以及樁墻中單片鋼板樁抗彎剛度之間的關(guān)系,研究了U型鋼板樁組合墻截面抗彎剛度的形成機(jī)理,得到了樁墻截面抗彎剛度與鎖口摩擦力、截面彎矩的關(guān)系。在純彎條件下,通過對(duì)樁墻微分單元在鎖口處的變形分析,推導(dǎo)出了樁墻中鋼板樁移軸距離和曲率以及相對(duì)滑移量在樁長(zhǎng)方向上的變化率的關(guān)系。同時(shí),本文通過ABAQUS建模,分析了翼緣側(cè)向荷載以及支撐方式對(duì)樁墻截面抗彎剛度的影響,從而確定了建模時(shí)的加載條件和邊界條件。通過對(duì)算例計(jì)算結(jié)果的分析,說明了鋼板樁移軸距離和樁墻截面抗彎剛度隨荷載非線性增加的過程,得到了樁墻鎖口滑移量及其變化率、曲率和截面抗彎剛度在樁長(zhǎng)方向上的分布特征,并進(jìn)一步分析了樁墻截面抗彎剛度的形成機(jī)理。
[Abstract]:As a new type of environmental protection material, steel sheet pile has been paid more and more attention and applied in the field of engineering construction. As a flexible supporting structure, steel sheet pile has the advantages of light weight, high strength, good water insulation and convenient construction. Because of the special structure and locking connection mode of U-shaped steel sheet pile, the relative slippage between piles will occur in the practical work of U-shaped steel sheet pile, which will reduce the bending stiffness and strength of the section of U-shaped steel sheet pile composite wall. As a result, the bending stiffness and strength of the actual section of U-shaped steel sheet pile composite wall become an uncertain quantity, which brings difficulties to the deformation calculation and strength checking calculation of the supporting structure in engineering design. In this paper, from the angle of friction between locking holes of steel sheet pile, the influence of friction force on the bending stiffness of U-shaped steel sheet pile wall is studied. In this paper, a symmetrical circular unit body of U-shaped steel sheet pile composite wall is taken as the research object. By establishing the static equilibrium equation on the steel plate pile section and the moment equilibrium equation on the contact surface, the relationship between the bending stiffness of the pile wall section and friction and the bending stiffness of the single sheet steel plate pile in the pile wall is studied. The forming mechanism of the bending stiffness of U-shaped steel sheet pile composite wall is studied. The relationship between the bending stiffness of pile wall section and the friction force and bending moment of the section of the pile wall is obtained. Under pure bending condition, the relationship between the distance, curvature and relative slip of steel plate pile in the direction of pile length is derived by analyzing the deformation of the differential unit of pile wall at the lock-hole. The relationship between the distance and curvature of the steel plate pile in the pile wall and the relative slip value in the direction of the pile length is derived. At the same time, through ABAQUS modeling, the influence of flange lateral load and bracing mode on the bending stiffness of pile wall section is analyzed, and the loading conditions and boundary conditions are determined. Through the analysis of the calculation results of the numerical examples, the process of nonlinear increase of the axial distance of steel plate pile and the flexural stiffness of the pile wall section with load is explained, and the slip quantity and the change rate of the pile wall lock mouth are obtained. The distribution characteristics of curvature and section bending stiffness in the direction of pile length are analyzed, and the forming mechanism of pile wall cross-section bending stiffness is analyzed.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU473.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 司學(xué)成;郭友文;郭愛博;;鋼板樁技術(shù)在嫩江干流堤防應(yīng)急工程中的應(yīng)用[J];黑龍江水利科技;2014年11期

2 湯勁松;熊保林;;鋼板樁圍堰設(shè)計(jì)的土壓力計(jì)算方法探討[J];巖土工程學(xué)報(bào);2014年S2期

3 劉芳;張國(guó)慶;蔣明鏡;熊巨華;中山裕章;;鋼板樁擋墻主動(dòng)土壓力分布的形狀效應(yīng)[J];巖土力學(xué);2012年S1期

4 尤晉閩;陳天寧;;結(jié)合面靜摩擦系數(shù)的統(tǒng)計(jì)模型[J];振動(dòng)與沖擊;2010年12期

5 章敏;李鵬程;;深厚軟土河床上大型鋼板樁圍堰設(shè)計(jì)與探討[J];廣東水利電力職業(yè)技術(shù)學(xué)院學(xué)報(bào);2010年04期

6 任安超;周桂峰;吉玉;朱敏;;熱軋鋼板樁的發(fā)展和應(yīng)用前景[J];特殊鋼;2009年01期

7 駱冠勇;曹洪;潘泓;周紅星;;新光大橋橋墩鋼板樁圍堰的優(yōu)化設(shè)計(jì)與監(jiān)測(cè)[J];華南理工大學(xué)學(xué)報(bào)(自然科學(xué)版);2006年02期

8 毛勇,黃步安;廣州新白云國(guó)際機(jī)場(chǎng)貨運(yùn)站基坑支護(hù)設(shè)計(jì)及施工[J];施工技術(shù);2004年01期

9 陳萬吉,胡志強(qiáng);三維摩擦接觸問題算法精度和收斂性研究[J];大連理工大學(xué)學(xué)報(bào);2003年05期

10 胡維忠;鋼板樁在我國(guó)堤防基礎(chǔ)防滲中的首次應(yīng)用[J];中國(guó)水利;2002年12期

相關(guān)會(huì)議論文 前1條

1 臧悅;桂明明;王俊英;祝曉鴿;;熱軋鋼板樁國(guó)內(nèi)外應(yīng)用及開發(fā)[A];2012年全國(guó)軋鋼生產(chǎn)技術(shù)會(huì)論文集（上）[C];2012年

，

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