本文選題：樁基 + 極限承載力�。� 參考：《中南大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年06期

【摘要】：針對(duì)楔形樁的承載特性,開展砂土中豎向壓荷載、水平向荷載以及地面堆載作用下等混凝土用量楔形樁和等直徑樁承載特性對(duì)比模型試驗(yàn),測(cè)得不同荷載等級(jí)下樁頂荷載-位移關(guān)系曲線以及樁側(cè)摩阻力、樁端阻力、樁側(cè)土壓力、樁頂下拽位移和樁身下拽力等分布規(guī)律;探討楔形樁與等直徑樁在豎向抗壓、水平向承載力以及負(fù)摩阻力特性的異同點(diǎn),分析楔形角對(duì)砂土中基樁的承載特性的影響規(guī)律。研究結(jié)果表明:在本文試驗(yàn)條件下,砂土中楔形樁的單樁豎向抗壓力和水平向極限承載力約分別為等混凝土用量等直徑樁的0.75倍和1.26倍;楔形樁的樁頂下拽位移與等直徑樁的下拽位移相比減小1/5~1/4。
[Abstract]:Aiming at the bearing characteristics of wedge pile, a comparative model test of bearing characteristics of equal concrete wedge pile and equal diameter pile under the action of vertical compression load, horizontal load and ground surcharge is carried out.The load-displacement relation curve of pile top under different load levels and the distribution of pile side friction resistance, pile tip resistance, pile side earth pressure, pile top drag displacement and pile bottom drag force are obtained, and the vertical compression resistance of wedge-shaped pile and equal diameter pile is discussed.The difference and difference of horizontal bearing capacity and negative friction resistance are analyzed, and the influence of wedge angle on bearing characteristics of pile in sand is analyzed.The results show that the vertical pressure resistance and horizontal ultimate bearing capacity of wedge pile in sand are about 0.75 times and 1.26 times as much as equal concrete content and equal diameter pile respectively.The pile top drag displacement of wedge pile is 1 / 5 / 4 / 4 less than that of equal diameter pile.
【作者單位】： 河海大學(xué)巖土力學(xué)與堤壩工程教育部重點(diǎn)實(shí)驗(yàn)室;河海大學(xué)土木與交通學(xué)院;江蘇省有色金屬華東地質(zhì)勘查局;河南理工大學(xué)土木工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51278170)~~
【分類號(hào)】：TU473.1

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李鷺鳴;楔形鍵工作時(shí)受力的分析[J];機(jī)床與工具;1955年04期

2 張善同;對(duì)“楔形鍵工作時(shí)受力的分析”一文的商榷[J];機(jī)床與工具;1956年12期

3 蔡方，

本文編號(hào)：1754006