典型内陆平原冲积地区公路软基土体工程特性研究
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摘要
近年来,我国基础设施建设的快速发展,高等级道路建设需要不断扩大。然而,由于道路地质构造的特殊性,道路路基往往有深厚的软土层,由于地基沉降或过度沉降,道路地基处理不当可能影响道路的正常使用功能。依据河北省东部内陆平原区的数千个钻孔资料,结合工程地质情况,以廊坊地区软土为研究对象,按照一元线性回归方法及多元线性回归方法进行统计分析,对软土物理力学性质指标进行了变异性及相关性分析,得到了所有土性指标的变化范围,建立了个指标相互之间的经验回归方程及相关系数。研究结果填补了廊坊地区的空白,对今后廊坊地区的公路建设方案比选、沉降控制及造价分析具有实际的指导意义。
In recent years,with the rapid development of infrastructure construction,high-grade road construction needs is expanded continuously in China. However,due to the particularity of the road geological structure,a deep soft soil layer is often existed in the roadbed; and due to foundation settlement or excessive settlement,the normal use of the road function may be affected by improper handling of road foundation. Based on the thousands of borehole data in the inland plain area of eastern Hebei Province and the engineering geological conditions,the soft soil of Langfang area is used as the research object.According to the unitary linear regression method and the multiple linear regression method,the variability and correlation analysis of the soft soil physical mechanics were carried out,then the variation range of all the earth indexes was obtained,and the empirical regression equation and correlation coefficient between the indexes were established. The results of the study fill the gaps in the Langfang area,and have practical significance for the future comparison of road construction schemes,settlement control and cost analysis in Langfang area.
In recent years,with the rapid development of infrastructure construction,high-grade road construction needs is expanded continuously in China. However,due to the particularity of the road geological structure,a deep soft soil layer is often existed in the roadbed; and due to foundation settlement or excessive settlement,the normal use of the road function may be affected by improper handling of road foundation. Based on the thousands of borehole data in the inland plain area of eastern Hebei Province and the engineering geological conditions,the soft soil of Langfang area is used as the research object.According to the unitary linear regression method and the multiple linear regression method,the variability and correlation analysis of the soft soil physical mechanics were carried out,then the variation range of all the earth indexes was obtained,and the empirical regression equation and correlation coefficient between the indexes were established. The results of the study fill the gaps in the Langfang area,and have practical significance for the future comparison of road construction schemes,settlement control and cost analysis in Langfang area.
引文
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[2]张廷军.关于公路施工中软土地基处理技术的探讨[J].低碳世界,2014(7):193-194.
[3]戢英.软土地基处理技术及在公路施工中的应用[D].天津:天津大学,2006.
[4]刘用海,朱向荣,李金柱.宁波地区典型软粘土土性指标概率特性研究[J].科技通报,2008,24(5):672-677.
[5]《工程地质手册》编委会.工程地质手册[M].4版.北京:中国建筑工业出版社,2007.
[6]陈延猛,夏银飞.软土物理力学指标的统计关系研究[J].国外建材科技,2007,28(2):106-108.
[7]阙金声,陈剑平,石丙飞.广州大学城软土的工程地质性质统计分析[J].煤田地质与勘探,2007,35(1):49-52.
[8]夏银飞,吴代华,文建华.珠江三角洲软土物理力学指标统计分析[J].公路交通科技,2008,25(1):47-50.
[9]马海鹏.上海地区土体抗剪强度与静力触探比贯入阻力相关关系研究[J].岩土力学,2014,35(2):536-542.
[10]苏卫卫.上海软黏土抗剪强度指标概率分布类型研究[J].地下空间与工程学报,2012,8(2):1695-1699.
[11]陈立宏.土体抗剪强度指标的概率分布类型研究[J].岩土力学,2005,26(1):37-40.
[12]ALMEIDA M,LIMA B,RICCIO M,et al.Stone Columns Field Test:Monitoring Data and Numerical Analyses[J].Geotechnical Engineering,2014,45(1):103-112.
[13]ALI F H.Engineering properties of improved fibrous peat[J].Scientific Research&Essays,2010,5(2):154-169.
[14]田小甫.北京地区粘性土物理力学指标统计分析[J].资源与产业,2007,9(4):80-84.
[15]CHING J Y.Modeling piezocone cone penetration(CPTU)parameters of clays as a mu[J].Canadian Geotechnical Journal,2014,51(1):77-91.