| 深厚软基抛石挤淤技术应用研究 |
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| 引用本文： | 王艳芳,俞缙,周治刚,徐宏.深厚软基抛石挤淤技术应用研究[J].中国公路学报,2011(6). |
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| 作者姓名： | 王艳芳 俞缙 周治刚 徐宏 |
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| 作者单位： | 南京大学金陵学院;南京水利科学研究院;华侨大学岩土工程研究所;南京水利科学研究院勘测设计院; |
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| 基金项目： | 重庆交通大学(桥梁)结构工程重点实验室开放基金项目(CQSLBF-Y11-2); 泉州市科技计划项目(2010Z81); 华侨大学基本科研业务费专项基金项目(JB-ZR1123); 南京水利科学研究院博士基金项目(YY310002) |
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| 摘 要： | 为研究抛石挤淤在深厚软粘土地基中的置换机理和效果,通过室内离心模型试验并结合现场检测及监测等多种手段,对抛石挤淤技术在连云港地区深厚软粘土中的应用情况展开系统研究。研究结果表明:抛石挤淤体通过加快下卧层孔压消散来提高地基强度,同时路基两侧的反压护道能有效限制挤淤体的扩散;抛石挤淤浅层换填方式能大幅提高淤泥路基强度,挤淤后路基侧向变形稳定;对于石料来源丰富的地区,抛石挤淤工法具有施工进度快且经济节约的优点,值得推广。
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| 关 键 词： | 道路工程 深厚软基 离心模型试验 抛石挤淤技术 地质雷达 浅层换填 |
Application Research on Technology of Dumping Rockfill for Extruding Silt in Deep Soft Subgrade |
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| WANG Yan-fang,YU Jin,ZHOU Zhi-gang,XU Hong.Application Research on Technology of Dumping Rockfill for Extruding Silt in Deep Soft Subgrade[J].China Journal of Highway and Transport,2011(6). |
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| Authors: | WANG Yan-fang YU Jin ZHOU Zhi-gang XU Hong |
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| Institution: | WANG Yan-fang1,2,YU Jin3,ZHOU Zhi-gang4,XU Hong5(1.School of Jinling,Nanjing University,Nanjing 210089,Jiangsu,China,2.Nanjing Hydraulic Research Institute,Nanjing 210029,3.Geotechnical Engineering Institute,Huaqiao University,Xiamen 361021,Fujian,4.Survey and Design Institute,Nanjing Hydraulic Research Institute,5.Jiangsu Transportation Research Institute Co.,Ltd,Nanjing 211112,China) |
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| Abstract: | In order to obtain the replacement mechanism and effect of technology of dumping rockfill for extruding silt in deep soft subgrade,based on laboratory centrifugal model test and in-situ detection and monitoring method,its application in the deep soft clay in Lianyungang city was systematically studied.Results show that the extruding silt body improves the subgrade soil strength by accelerating the dissipation of pore water pressure in subjacent layer and the back berms on both sides of the subgrade can effe... |
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| Keywords: | road engineering deep soft subgrade centrifugal model test technology of dumping rockfill for extruding silt geological radar shallow soil replacement |
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