水工挡土墙地基承载力特征值修正  

Correction of characteristic value of subsoil bearing capacity on hydraulic retaining wall

作　　者：陈博 曹蕾 杨杰 CHEN Bo;CAO Lei;YANG Jie(Shanghai Waterway Engineering Design and Consulting Co.,Ltd.,Shanghai 200120,China)

机构地区：[1]中交上海航道勘察设计研究院有限公司,上海200120

出　　处：《水运工程》2018年第4期140-145,共6页Port & Waterway Engineering

摘　　要：在采用载荷试验或原位试验的经验统计关系等确定地基承载力特征值时,考虑的是对应于基本条件下的值;而在进行地基基础设计时,考虑的是承载力极限状态下的标准组合,即采用荷载设计值。针对这一问题,对水工挡墙在水平力作用下基础土体的破坏模式进行了分析,研究埋深和宽度对地基承载力特征值带来的影响。采用引入基础深度修正系数的方法,使挡土墙地基承载力特征值得以提高。When determining the characteristic value of subsoil bearing capacity by using the empirical statistical relationship of loading test or in-situ test,the value of corresponding to the basic condition is considered.While the foundation design is carried out,the standard combination of the ultimate bearing capacity is considered,namely,the load design value is adopted.In view of this problem,the failure modes of foundation soil under horizontal force of the hydraulic retaining wall is analyzed,and the influence of embedded depth and width on the bearing capacity of foundation is studied.In order to improve the bearing capacity of the hydraulic retaining wall,the method of introducing basic embedded depth correction coefficient is adopted.

关 键 词：水工挡土墙 地基承载力特征值 土体破坏模式 宽深修正系数 

分 类 号：U656.1[交通运输工程—港口、海岸及近海工程]