本文選題：樁基 + 大直徑�。� 參考：《重慶交通大學(xué)》2014年碩士論文

【摘要】：樁基礎(chǔ)具有承載力高、穩(wěn)定性好、基礎(chǔ)沉降及差異變形小、抗震性能好及具有對(duì)各種地質(zhì)條件的適用性強(qiáng)等優(yōu)點(diǎn),被廣泛應(yīng)用于高層建筑、近海采油、大型橋梁工程建設(shè)、海岸碼頭及大型動(dòng)力機(jī)器基礎(chǔ)等實(shí)際工程中。隨著土木建筑行業(yè)的發(fā)展,建筑結(jié)構(gòu)的高度越來越高、且由于地址條件的日益不確定性及建筑結(jié)構(gòu)與環(huán)境的關(guān)系日趨緊密,研究管樁基礎(chǔ)在橫向荷載作用下及豎向荷載作用下的內(nèi)力、變形及破壞機(jī)理可以更好的解決工程實(shí)際問題。本文的研究工作如下:①研究豎向荷載與水平荷載下作用下管樁與土共同作用的方法,提出了各種方法的適用范圍以及優(yōu)缺點(diǎn),因此在數(shù)值計(jì)算過程中,需要選擇與工程相適應(yīng)的計(jì)算方法,以提高計(jì)算結(jié)果的精度。②建立符合實(shí)際的大直徑管樁模型,其中探討了有限元建模時(shí)應(yīng)注意單元選取原則及單元的選取;對(duì)比分析了三維及二維有限元管樁模型在豎向荷載作用下樁體的受力計(jì)算結(jié)果,得出用二維有限元模型可以代替三維模型進(jìn)行管樁—土共同作用下的受力性狀進(jìn)行分析,結(jié)果能夠滿足要求。③研究豎向荷載作用下不同管樁參數(shù)對(duì)管樁受力性狀及工作性能影響,得出不同結(jié)構(gòu)參數(shù)對(duì)管樁的受力性狀的影響程度,為選取合理的管樁參數(shù)以提高管樁的安全性及其工作性能的發(fā)揮提供依據(jù)。④探討了水平荷載作用下不同管樁參數(shù)對(duì)管樁受力性狀及工作性能影響,得出水平荷載作用下不同結(jié)構(gòu)參數(shù)對(duì)管樁的樁身彎矩及水平位移的影響程度,以及豎向荷載對(duì)水平荷載作用下樁體的承載能力影響,并提出樁體受力破壞的結(jié)構(gòu)構(gòu)造措施,以提高水平荷載作用下樁基的安全性。
[Abstract]:The pile foundation has the advantages of high bearing capacity, good stability, small settlement and differential deformation, good seismic performance and strong applicability to various geological conditions. It has been widely used in high-rise buildings, offshore oil production and large-scale bridge construction. Coastal wharf and large-scale power machine foundation and other practical projects. With the development of civil construction industry, the height of building structure is higher and higher, and because of the uncertainty of address condition and the relationship between building structure and environment, Studying the internal force, deformation and failure mechanism of pipe pile foundation under transverse load and vertical load can better solve the practical engineering problems. The research work of this paper is as follows: 1. The methods of interaction between pipe pile and soil under vertical and horizontal loads are studied, and the applicable scope, advantages and disadvantages of these methods are put forward, so in the process of numerical calculation, In order to improve the accuracy of the calculation results, the practical large-diameter pipe pile model should be established. The principle of element selection and the selection of element should be paid attention to in finite element modeling. This paper compares and analyzes the calculation results of three dimensional and two dimensional finite element pipe pile model under vertical load, and concludes that the two dimensional finite element model can be used instead of three dimensional model to analyze the mechanical behavior of pipe pile and soil under the action of pipe pile and soil. The results can meet the requirement of .3 to study the influence of different parameters of pipe pile on the mechanical behavior and working performance of pipe pile under vertical load, and the degree of influence of different structural parameters on the mechanical behavior of pipe pile is obtained. In order to select reasonable pipe pile parameters to improve the safety and performance of pipe pile, the influence of different pipe pile parameters on the mechanical behavior and working performance of pipe pile under horizontal load is discussed. The influence of different structural parameters on the bending moment and horizontal displacement of pipe pile under horizontal load and the influence of vertical load on the bearing capacity of pile under horizontal load are obtained. In order to improve the safety of pile foundation under horizontal load.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU473.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前9條

1 吳恒立;推力樁雙參數(shù)法微分方程的通解[J];重慶交通學(xué)院學(xué)報(bào);1985年03期

2 張俊紅;李世海;許利凱;胡涵;;海港碼頭大管樁力學(xué)特性的實(shí)驗(yàn)測(cè)試與反演研究[J];港工技術(shù);2006年04期

3 李志明;汪宏;俞銘華;;水平承載大直徑管樁工作性狀的有限元研究[J];江蘇科技大學(xué)學(xué)報(bào)(自然科學(xué)版);2007年01期

4 鄭桂心;;偏心荷載作用下PHC管樁的受力分析[J];金屬礦山;2007年03期

5 熊慎龍;;建筑地基下管樁拔除后建筑物加固設(shè)計(jì)方案[J];山西建筑;2012年08期

6 馬志濤;;混凝土管樁水平受力性狀有限元分析[J];山東科技大學(xué)學(xué)報(bào)(自然科學(xué)版);2009年05期

7 蔡健;周萬清;林奕禧;黃良機(jī);;深厚軟土超長預(yù)應(yīng)力高強(qiáng)混凝土管樁軸向受力性狀的試驗(yàn)研究[J];土木工程學(xué)報(bào);2006年10期

8 李平先,趙國藩,張雷順;預(yù)應(yīng)力混凝土大管樁與樁帽連接的軸拔性能和粘結(jié)滑移特性[J];巖石力學(xué)與工程學(xué)報(bào);2004年22期

9 張耀年;橫向受荷樁的通解[J];巖土工程學(xué)報(bào);1998年01期

，

本文編號(hào)：1778658