大面积软土地基固结处理实例
摘要:堆载预压固结法的原理是地基土在荷载作用下(总应力σ增加)、孔隙水排出(即孔隙水压力μ减少)和有效压力σ′增加的过程。结合工程实例,介绍了堆载预压与塑料排水板相结合对大面积软黏土进行排水固结处理的设计、施工方法,并对工程实例监测结果进行分析,表明了预压固结处理后的饱和软土地基承载能力大为提高,塑料排水板深度范围内,土层固结作用效果明显,工后沉降也大为减小,各区域的地基土主固结变形在几年的时间内固结度均达到了90%以上。
Abstract:The principle of preloading consolidation method is that the foundation soil under the load actions(with an increasing total stress σ) can increase pore water drainage(i.e.,reducing the pore water pressure μ) and effective pressure σ'.This paper introduces the design and construction methods to conduct drainage consolidation treatment to soft clay of large areas by combining the preloading with the plastic drainage plate with engineering examples.This paper also analyzes the engineering monitoring results and shows that after preloading consolidation treatment,the bearing capacity of the saturated soft clay foundation has been greatly improved,the soil consolidation effect is obvious within the depth range of the plastic drainage plate,the settlement after construction is also greatly reduced,and the primary consolidation degree of the foundation soil in all regions has been up to over 90%in a few years.
中文标题：
大面积软土地基固结处理实例
An Example of Consolidation in Large Area of Soft Clay
作者：
韩绍英1,赵在立2
Han Shaoying1,Zhao Zaili2
作者简介:韩绍英,女,1971年生,汉族,山东超远人,大学本科毕业,高级工程师,主要从事水文地质与工程地质、岩土工程专业及核电厂前期工作。E-mail:hsy3877@126.com
通讯地址：
1. 江苏核电有限公司, 江苏连云港 222042; 2. 河北中核岩土工程有限责任公司, 河北石家庄 050022
1.JiangsuNuclearPowerCo.,Ltd,Lianyungang222042,Jiangsu,China; 2.NuclearIndustryofChinaGeotechnicalEngineeringCo.,Ltd,Shijiazhuang050022,Hebei,China
中图分类号:TU472
doi:10.3969/j.issn.1007-2993.2016.03.004
出版物：岩土工程技术
收稿日期:2016-02-29
关键词:软土,预压排水固结,塑料排水板,地基处理,地基承载能力,主固结,固结度
Key words:soft clay,preloading drainage consolidation,plastic drainage plate,foundation treatment,foundation bearing capacity,primary consolidation,consolidation degree
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