根式沉井基础水平承载性能数值模拟研究  

Research on Numerical Simulation of Horizontal Bearing Capacity of Root Open Caisson Foundation

作　　者：戴良岩 邢光兵 DAI Liang-yan;XING Guang-bing(Nanjing Vocational Institute of Railway Technology,Nanjing 210031,China)

机构地区：[1]南京铁道职业技术学院,江苏南京210031

出　　处：《科技创新与生产力》2023年第2期139-141,共3页Sci-tech Innovation and Productivity

基　　金：南京铁道职业技术学院青年基金项目(YQ220005)。

摘　　要：为了适应现在复杂地形地质条件,针对根式沉井基础这种新型基础类型,采用ABAQUS有限元分析软件,考虑土体参数、边界条件、网格划分、荷载条件等方面,建立了模拟研究的模型系统,对根式沉井基础的水平承载性能进行了模拟,对模型的荷载位移和井身变形进行了有限元分析。经过模拟研究可以得出以下结论:根式沉井基础的根式结构可与周围土体作用,使周围土体也发挥出良好的承载性能。该研究可以弥补实际复杂工况下试验难度较大的缺陷,进一步验证结构安全稳定,为我国交通运输业尤其是桥梁建设提供一定参考依据,对维护交通运输安全具有较强的指导意义。In order to adapt to the current complex terrain and geological conditions,for the root open caisson foundation that is the new type of foundation,the ABAQUS finite element analysis software is used to establish a model system for simulation study,considering soil parameters,boundary conditions,grid division,load conditions,etc.,to simulate the horizontal bearing capacity of the root open caisson foundation,and to conduct finite element analysis of the load displacement and shaft deformation of the model.Through the simulation study,the following conclusions can be drawn:the root structure of the root open caisson foundation can interact with the surrounding soil and make the surrounding soil also play a good bearing capacity.This study can make up for the defects of the more difficult test under the actual complex working conditions,further verify the safety and stability of the structure,provide a certain reference basis for the transportation industry in China,especially for the bridge construction,and have a strong guiding significance for the maintenance of transportation safety.

关 键 词：桥梁构造 桥基 沉井 根式沉井基础 水平荷载 有限元模拟 

分 类 号：U443.131[建筑科学—桥梁与隧道工程] TB24[交通运输工程—道路与铁道工程] TB115.1[一般工业技术—工程设计测绘]