铁道科学与工程学报2017，Vol.14Issue(4)：787-793,7.
基于ANSYS的桥式盾构受力及变形特征研究
Research on characteristics of stress and deformation of bridge shield based on ANSYS
摘要
Abstract
In order to get the deformation force of the bridge shield, and combining with the actual construction engineering of bridge shield, shield construction process was simulated to reveal variation of deformation and force of shield by using ANSYS finite element software to establish the three-dimensional frame precise model considering the actual size of shield. The rationality of the calculation model was verified by comparing the calculation results with the field monitoring results. The results show that changes of longitudinal core soil height has a great influence on deformation and stress of shield. With the decrease of the height of core soil, deformation of the center columns and cross beams is small and deformation of side columns changes greatly which has three kinds of deformation characteristics of elastic foundation beam, simply supported beam and cantilever beam. The cantilever situation corresponds to the most unfavorable stress shield. Bending moments with side columns of the shield tail section are much larger than the front side columns of the shield and the inner bending moment of the side column is much larger than that of the outer, which suggests that the actual design parameters should be determined according to the force condition of the inside of side column.关键词
地道桥/桥式盾构/核心土/变形受力/数值分析Key words
tunnel bridge/bridge shield/core soil/deformation and stress/numerical analysis分类
交通工程引用本文复制引用
周利金..基于ANSYS的桥式盾构受力及变形特征研究[J].铁道科学与工程学报,2017,14(4):787-793,7.基金项目
湖南省科技厅资助项目(2014SK4072) （2014SK4072）
湖南省交通厅资助项目(201432) （201432）
