公路桥涵台背回填中粗砂相对密实度的质量评定方法研究  

A Stand on Quality Assessing Method of Relative Density of Back Filled Coarse-Sand Behind Abutments

作　　者：刘仰韶 田卿燕 吕建兵 

机构地区：[1]广东交通集团检测中心,广州市510800

出　　处：《公路》2005年第12期55-58,共4页Highway

基　　金：广东省交通厅项目(项目编号:2002-013)

摘　　要：根据公路桥涵台背回填砂的相对密实度与砂层沉降之间的关系,提出了回填砂的相对密实度是否符合要求的标准值,借助回填砂的相对密实度与轻便触探锤击数之间的经验关系,构建了桥涵台背填砂相对密实度的质量评定方法,为公路桥涵台背填砂的施工质量控制提供了一个可行的方法。According to the relations between the relative density of sand and settlements of sand layer in back filling behind abutments, a standard value is put forward in this paper to assess the relative density of sand. On the basis of the empirical relations between blow counts of light dynamic penetration and the relative density of sand, a quality assessing method is set to test the relative density of sand. This study provides a feasible method for construction quality control in back filled sand behind abutments.

关 键 词：桥涵台背 砂的相对密实度 标准值 轻便触探 评定方法 

分 类 号：U443.82[建筑科学—桥梁与隧道工程]