南通理工学院局部软土地基换填法施工研究

Study on the Construction of Local Soft Soil Foundation Replacement Method in Nantong Institute of Technology

文章以滨海地区南通理工学院校园工程局部软土地基处理为例,讨论了工程中软土地基处理的方法,确定了换填法在本工程当中的应用。利用有限元软件Abaqus对本工程进行模拟,对换填前后的地基破坏形态及地基承载力进行分析,发现局部软土地基的承载力较小,容易发生滑移破坏,而经过换填加固后的地基可以将基底压力传递到周围性能较好的土体当中,地基承载力较高,不容易发生滑移破坏。笔者从换填材料的选择、施工工艺的选择和施工流程三个方面描述了本工程局部软土地基换填的施工工艺,为类似工程提供参考。

Taking the local soft soil foundation treatment of a campus project in Nantong Institute of Technology in coastal area as an example,this paper discusses the treatment methods of soft soil foundation in the project,and determines the application of replacement and filling method.The finite element software Abaqus is used to simulate this project.By analyzing the failure patterns and bearing capacity of the foundation before and after replacement,it is found that the bearing capacity of local soft soil foundation is small and it is easy to slip failure,while the foundation reinforced by replacement can transmit the foundation pressure to the surrounding soil with better performance,and the bearing capacity of the foundation is high and it is not easy to slip failure.It describes the construction technology of local soft soil foundation replacement from three aspects:the selection of replacement materials,the selection of construction technology and the construction process,which provides a reference for similar projects.