摘要
粉细砂地层河床细砂粘粒含量低,渗透系数大,抗冲刷能力低,地基不稳,易发生不均匀沉降。文章以新疆和田地区堤防现状为例进行分析,提出了一种适用于粉细砂地层的“现浇钢筋混凝土挡水墙+钢筋混凝土预制桩”结构型式及其施工工艺。该种防洪工程结构型式整体性好,重量轻,施工中不需要开挖基础,能够适应基础不均匀沉陷等因素带来的不均匀荷载影响,施工工艺简单,施工速度快捷、方便。为类似地层防洪工程设计和施工提供参考。
The riverbeds composed of fine sandy strata in the Hotan region in Xinjiang,exhibit characteristics of low fine sand particle content,high permeability coefficient,low erosion resistance,and unstable foundation,leading to potential occurrences of non-uniform settlement.In this paper,an analysis of the current situation of embankments in the region is conducted,and a novel structural design and construction technique suitable for fine sandy strata are proposed.The proposed approach combines a cast-in-situ reinforced concrete water-retaining wall with reinforced concrete precast piles.This flood control engineering structure demonstrates excellent overall integrity,lightweight nature,and does not require excavation of foundations during construction.It is capable of accommodating uneven load effects resulting from non-uniform foundation settlement.The construction process is simple,rapid,and convenient.This research serves as a valuable reference for the design and construction of similar flood control engineering projects in comparable geological conditions.
作者
胡恒鹏
HU Hengpeng(Xinjiang Water Conservancy and Hydropower Survey and Design Institute Co.,Ltd.,Urumqi 830000,China)
出处
《中国水能及电气化》
2023年第10期21-24,共4页
China Water Power & Electrification
关键词
粉细砂地层
防洪工程
结构型式
施工工艺
fine sandy strata
flood control project
structural design
construction technology
