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

发布时间：2018-09-04 11:59

【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。
[Abstract]:For the quality of water conservancy engineering, it is very important to strengthen the foundation, which has a direct effect on the control of project cost and the safety of the project. Therefore, in order to effectively strengthen the stability of soft soil foundation in the construction of Xichang water conservancy project, this paper puts forward the application of cement mixing pile technology in soft soil foundation. First of all, based on the principle of cement mixing pile strengthening soft soil, the composite foundation is designed and applied to the soft soil foundation of water conservancy project, and the stress of the foundation is calculated, and the pile length is calculated by the basic theory. The bearing capacity of cement mixing pile composite foundation is analyzed by analyzing the pile modulus and replacement ratio, and the influence of the above factors on the composite foundation is obtained. Secondly, based on the design foundation of composite foundation, the deformation conditions at a certain time point are selected from the soil. In this paper, the stress variation relation of soft soil foundation is studied, and the vertical relationship of effective stress at any time in the unearthed soil is created by using the one-dimensional compression curve of soft clay, and then the soil is analyzed according to the consolidation degree relation defined by stress definition and deformation definition. The standard value of the final settlement of the design scheme is obtained by this relation. The simulation results show that the design method can effectively enhance the stability of soft soil foundation in hydraulic engineering.
【作者单位】：西昌学院工程技术学院;
【分类号】：TV551.4

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