高速公路盐渍土地区路基地基改良研究
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摘要
以某高速盐渍土路为研究对象,对其改良。研究表明:采用二灰和三灰改良盐渍土具有良好的改良效果,均能达到设计要求。随着各配比粉煤灰掺量增加,二灰改良盐渍土无侧限抗压强度随之增加;在粉煤灰和石灰具有相同掺量时,随水泥掺量的增加,三灰改良盐渍土的无侧限抗压强度随之增大。盐渍土的改良采用石灰+粉煤灰的二灰稳定技术,在施工过程中,由于不同地域的土质差异较大,因此要展开针对性的设计方案,在提高设计强度的同时,向其中加入水泥,从而降低工程成本。
In this paper,a high-speed saline soil roadbed in Gansu is taken as an example. The research shows that using two ash and three ash to improve saline soil has good effect of improvement,and all of them can meet design requirements. With the increase of fly ash content,the unconfined compressive strength of the two ash improved saline soil increased. When the fly ash and lime had the same volume,the unconfined compressive strength of the three ash improved saline soil increased with the increase of cement content. The improved saline soil engineering using two ash stabilization technology of lime and fly ash,in the construction,according to soil differences,the specific design composition,if the design strength is increased,the amount can be added in the cement foundation design of strength to meet,will reduce the cost of engineering.
In this paper,a high-speed saline soil roadbed in Gansu is taken as an example. The research shows that using two ash and three ash to improve saline soil has good effect of improvement,and all of them can meet design requirements. With the increase of fly ash content,the unconfined compressive strength of the two ash improved saline soil increased. When the fly ash and lime had the same volume,the unconfined compressive strength of the three ash improved saline soil increased with the increase of cement content. The improved saline soil engineering using two ash stabilization technology of lime and fly ash,in the construction,according to soil differences,the specific design composition,if the design strength is increased,the amount can be added in the cement foundation design of strength to meet,will reduce the cost of engineering.
引文
[1]时春喜.唐曹高速公路盐渍土路基处理研究[J].公路交通科技,2015(9):47-49.
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[3]杨建平,张喜民,李小豹.建筑垃圾材料在公路工程特殊地基处理中的应用研究[J].施工机械与管理,2016(10):95-99.
[4]成佳丽.盐渍土地区路基地基处理措施研究[D].西安:长安大学,2012.
[5]魏成存.盐渍土地基处理技术研究[J].建筑知识,2015(12):66-68.
[6]龚晓南.地基处理技术及发展展望[M].北京:中国建筑工业出版社,2014.
[7]常捷.连云港不良地基虫质概巧及处治措施[J].岩土工程技术,2013(12):130.
[8]徐安花,陈玺光,房建宏.强夯加固技术在重盐渍土地区公路地基处理中的应用探讨[J].青海交通科技,2017(4):64-66.
[9]向玮,秦毅.砾石桩法处理高速公路盐渍化软土地基的应用研究[J].湖南交通科技,2014,40(2):7-10.
[10]尤苏南.察尔汗盐渍土工程特性与地基处理方法研究[J].工业建筑,2013,43(S1):451-454.
[2]李鑫,朱郭瑞.抛石挤淤方法在软土地基处理中的应用[J].科技创新与应用,2012(12):220-221.
[3]杨建平,张喜民,李小豹.建筑垃圾材料在公路工程特殊地基处理中的应用研究[J].施工机械与管理,2016(10):95-99.
[4]成佳丽.盐渍土地区路基地基处理措施研究[D].西安:长安大学,2012.
[5]魏成存.盐渍土地基处理技术研究[J].建筑知识,2015(12):66-68.
[6]龚晓南.地基处理技术及发展展望[M].北京:中国建筑工业出版社,2014.
[7]常捷.连云港不良地基虫质概巧及处治措施[J].岩土工程技术,2013(12):130.
[8]徐安花,陈玺光,房建宏.强夯加固技术在重盐渍土地区公路地基处理中的应用探讨[J].青海交通科技,2017(4):64-66.
[9]向玮,秦毅.砾石桩法处理高速公路盐渍化软土地基的应用研究[J].湖南交通科技,2014,40(2):7-10.
[10]尤苏南.察尔汗盐渍土工程特性与地基处理方法研究[J].工业建筑,2013,43(S1):451-454.