强夯作用下的红粘土地基压实特性研究 |
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引用本文: | 曲兆军,欧阳振华,高永涛.强夯作用下的红粘土地基压实特性研究[J].路基工程,2010,0(2):174-176. |
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作者姓名: | 曲兆军 欧阳振华 高永涛 |
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作者单位: | 1.北京科技大学土木与环境工程学院, 北京 100083 |
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基金项目: | 国家自然科学基金项目“均匀力边界条件下的土石混合体破坏机理研究”(10702072) |
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摘 要: | 以新建昆明国际机场红粘土地基为依托,研究了红粘土在强夯作用下的压实特性。试验研究结果表明:红粘土强夯压实效果并非随夯击次数的增加而增强,夯击到一定次数时,坑底土体变成"橡皮土",产生较大的侧向移动;在同级夯实能下,红粘土地基夯点下土体和夯点间土体的压实度相差不大;在不同压实能下,地基土体的压实度随着夯击能的增高而增加;红粘土强夯最佳夯击深度为1 m,有效夯击深度在1~3 m之间。
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关 键 词: | 红粘土 强夯 压实特性 试验研究 压实度 |
收稿时间: | 2019-11-08 |
Study on Compaction Characteristics of Red Clay Foundation under the Effect of Dynamic Compaction |
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Authors: | QU Zhao-jun OUYANG Zhen-hua GAO Yong-tao |
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Institution: | 1.School of Civil and Environmental Engineering/a>;Beijing University of Science and Technology/a>;Beijing 100083/a>;China/a>;2.China Coal Research Institute/a>;Beijing 100013/a>;China |
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Abstract: | Taking red clay foundation of the newly-built Kunming International Airport for example,this paper studies the compaction characteristics of red clay under the effect of heavy tamping.It is indicated from test result that heavy tamping effect of red clay does not increase with the increase of tamping times;at a certain degree of compaction,bottom soil mass becomes rubber soil making greater lateral movement.Under the same compaction power,the compactness of foundation soil mass under tamping point and betwe... |
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Keywords: | red clay heavy tamping compaction characteristics test study compactness |
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