| 双盘挤扩桩的静承载特性试验研究 |
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| 引用本文： | 吴怡颖,马宏伟,姜晓强,童宇. 双盘挤扩桩的静承载特性试验研究[J]. 四川建材, 2020, 0(4): 61-63 |
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| 作者姓名： | 吴怡颖 马宏伟 姜晓强 童宇 |
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| 作者单位： | 安徽理工大学土木建筑学院 |
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| 基金项目： | 国家自然科学基金(51408006);安徽省博士后基金(2016B101)。 |
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| 摘 要： | 通过室内小比尺模型试验,研究了直孔桩、单盘挤扩桩和双盘挤扩桩在静荷载作用下的承载和沉降特性。研究表明:挤扩桩的极限承载力优于直孔桩,双盘挤扩桩的极限承载力为直孔桩的3倍;挤扩桩的沉降变形量远小于直孔桩,双盘挤扩桩的沉降量可比直孔桩减小86%;双盘挤扩桩的盘阻在桩基承载力中的占比随荷载的增大而增大,且下盘盘阻大于上盘盘阻。
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| 关 键 词： | 桩基础 模型试验 挤扩桩 沉降 |
Experimental study on static bearing characteristics of doubleSqueezed Branch Pile |
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| WU Yiying,MA Hongwei,JIANG Xiaoqiang,TONG Yu. Experimental study on static bearing characteristics of doubleSqueezed Branch Pile[J]. Sichuan Building Materials, 2020, 0(4): 61-63 |
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| Authors: | WU Yiying MA Hongwei JIANG Xiaoqiang TONG Yu |
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| Affiliation: | (School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,China) |
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| Abstract: | The bearing and settlement characteristics of the straight-hole pile,single squeezed branch pile and double squeezed branch pile under the static load are studied through the indoor small-scale model test.The results show that the ultimate bearing capacity of the branch pile is better than that of the straight-hole pile,and the ultimate bearing capacity of the double squeezed branch pile is three times of that of the straight-hole pile.The settlement deformation of the extruded pile is much smaller than that of the straight-hole pile,and the settlement of the double squeezed branch pile is 86%lower than that of the straight-hole pile.The proportion of disk resistance of double squeezed branch pile in bearing capacity of pile foundation increases with the increase of load,and the resistance of lower disk is larger than that of upper disk. |
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| Keywords: | pile foundation model test squeezed branch pile settlement |
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