新扩建堤防填料对加高培厚堤防工程沉降的影响研究  

Study of the influence of the new expansion embankment material on the sedimentation of embankment heightening and thickening project

作　　者：杨永森 顾艳玲[1] 孙天祎 YANG Yongsen;GU Yanling;SUN Tianyi(China Institute of Water Resources and Hydropower Research,Beijing 100038,China)

机构地区：[1]中国水利水电科学研究院,北京100038

出　　处：《水利建设与管理》2022年第6期46-50,共5页Water Conservancy Construction and Management

摘　　要：针对加高培厚堤防工程中新老堤防结合部结合不良造成的堤防不均匀沉降问题,采用有限元法对加高培厚堤防工程进行分析,研究了新填堤防材料的密度、内摩擦角及黏聚力对加高培厚堤防工程沉降的影响。结果表明:新堤填料参数中,密度和弹性模量的变化对堤顶沉降影响最大,内摩擦角的影响次之,黏聚力的影响小于内摩擦角;对于同类加高培厚堤防工程的设计,应综合考虑填料密度、内摩擦角、黏聚力、弹性模量的影响,辅以相应的工程措施,以保证加高培厚堤防工程的稳定性。The finiteelementmethod is adopted to analyze the embankment heightening and thickening projectin order to solve the problem of uneven sedimentation of embankment damage caused by the poor combination of old and new embankments in the embankment heightening and thickening project.The influence of new filling embankment material density,internal friction angle and cohesion on the sedimentation of heightening and thickening embankment project is investigated.The results show that the density and elastic change on settlement has the greatest impact on embankment top sedimentation,which is followed by the influence of internal friction angle,and the influence of cohesion is less than that of internal friction angle.The influence of filling material density,internal friction angle,cohesion and elastic modulus should be comprehensively considered aiming at the design of similar heightening and thickeningembankment project,appropriate engineering measures should be adopted to ensure the stability of heightening and thickening embankment project.

关 键 词：新建堤防材料 加高培厚 有限元法 沉降 

分 类 号：TV41[水利工程—水工结构工程]