新型泥砂互层结构埝体变形特性  

Deformation characteristics of a new type of embankment with mud-sand interbedded structure

作　　者：尹长权[1,2,3,4] YIN Chang-quan(CCCC Tianjin Port Engineering Institute Co.,Ltd.,Tianjin 300222,China;Key Laboratory of Port Geotechnical Engineering of Ministry of Communication,Tianjin 300222,China;Key Laboratory of Geotechnical Engineering of Tianjin,Tianjin 300222,China;CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300461,China)

机构地区：[1]中交天津港湾工程研究院有限公司 [2]港口岩土工程技术交通行业重点实验室 [3]天津市港口岩土工程技术重点实验室 [4]中交第一航务工程局有限公司

出　　处：《中国港湾建设》2019年第9期13-16,共4页China Harbour Engineering

基　　金：天津市自然科学基金一般项目(16JCQBJC21700);天津市自然科学基金青年项目(16JCQNJC07200)

摘　　要：随着国家对环保要求的日益严格,疏浚土的处理技术相关研究成为热点。提出新型泥砂互层结构埝体结构形式,利用无纺布膜袋充填疏浚土,并与膜袋砂土互层,间歇施工逐步形成稳定的新型堤心结构;通过有限元仿真结果可知,固结55 d后泥砂互层埝体的沉降最大值为2.73 m,埝体顶面突出地面约1.9 m,埝体本身压缩主要发生在埝体中部,底部和顶部压缩较小。埝体的设计和施工皆满足工程要求,是软土地基上切实可行的快速筑埝技术。With the increasingly stringent requirements for environmental protection in China, the research on dredged soil treatment technology has become a hot spot. A new type of embankment with mud-sand interbedded structure is put forward in this paper. The dredged soil is filled with membrane bag and interbedded with sandy membrane bag, which gradually forms a new stable embankment core structure. Through the finite element simulation results, it is known that after 55 d of consolidation, the maximum displacement of mud-sand interbedded structure is 2.73 m, and the top surface of the mud-sand interbedded structure is 1.9 m from the back surface. The compression of the mud-sand interbedded structure is mainly occurs in the middle of the body, and the bottom and top are less compressed. The design and construction of the embankment meets the engineering requirements, and it is a feasible and fast embankment technology on soft soil foundation.

关 键 词：围埝 模袋 疏浚土 吹泥袋 沉降 

分 类 号：U655.541[交通运输工程—港口、海岸及近海工程] TU472.3[交通运输工程—船舶与海洋工程]