西昌市水利工程施工中有效加强软土地基稳定性的方法研究  

Methocl of Soft Soil Foundation Stability Reinforcement in Hydraulic Engineering

作　　者：余明东[1] Yu Mingdong(Engineering and Technology Institute Xichang College,Xichang Sichuan 615013,China)

机构地区：[1]西昌学院工程技术学院,四川西昌615013

出　　处：《科技通报》2017年第2期223-226,共4页Bulletin of Science and Technology

摘　　要：对于水利工程质量而言,为地基做加固处理至关重要,对控制工程造价以及工程安全都有直接影响。因此,为使西昌市水利工程施工中软土地基的稳定性得到有效加强,文中提出在软土地基中应用水泥搅拌桩技术。首先,以水泥搅拌桩加固软土的原理为基础,设计将复合地基应用到水利工程软土地基中,并计算地基受力情况,通过基础理论桩长、桩体模量以及置换率等因素分析水泥搅拌桩复合地基承载情况,从而获得上述因素对复合地基的影响情况;其次,基于复合地基设计基础,从土中选择某一时间点的变形条件,研究关于软土地基的应力变化关系,利用软粘土一维压缩曲线创建出土内一点任意时间有效应力竖向变化关系式,再运用按照应力定义和变形定义的固结度关系完成土体分析,以此关系获取设计方案最终沉降标准值。仿真实验证明,通过文中设计方法能够有效地增强水利工程中软土地基的稳定性。For the quality of water conservancy project, it is very important to reinforce the foundation,which has a direct impact on the cost of the control project and the safety of the project. Therefore, for the stability of the Xichang city water conservancy project construction of soft soil foundation is effectively strengthened, in soft soil foundation using cement mixing pile technology is put forward in this paper.First of all, the principle of cement mixing pile strengthening soft soil foundation, composite foundation design will be applied to the soft soil foundation in water conservancy project, and calculation of ground stress, through the basic theory of pile length, pile modulus and replacement ratio analysis of bearing condition of cement mixing pile composite foundation, so as to obtain the influencing factors of the composite foundation; secondly, based on the design of composite foundation based on deformation conditions at a point in time from the soil, study on soft soil stress variation, using soft clay to create a point in an arbitrary one-dimensional unearthed time relationship between the effective stress change in the vertical compression curve, then use in accordance with the definition and stress the definition of the deformation degree of consolidation of soil relationship analysis, in order to obtain the standard value of ultimate settlement relationship design. Simulation results show that the design method can effectively enhance the stability of soft soil foundation of water conservancy project in this paper.

关 键 词：西昌 水利工程 软土地基 复合地基加固 

分 类 号：TV391[水利工程—水工结构工程]