摘要
通过建立简化的地层模型,对苏州某引水工程的顶进过程进行三维有限元分析。绘制施工中地表在纵向和横向的变形曲线,得出在机头前2.5D(D为管道外径)处土体开始出现隆起,横断面方向距轴心5D范围内土体沉降量较大,达总沉降量的67%。分析顶推面压力、管土摩擦系数、静止土压力系数对土体沉降变形的影响,为顶管施工提供指导建议。
The 3D finite element analysis of the pipe-jacking of a water diversion project is carried out by establishing a simplified formation model.The longitudinal and lateral deformation curves of the surface during construction were drawn,and it reflected that the soil began to heave at 2.5D(D is the outer diameter of the pipe)in front of the machine head,and the soil settlement was large within 5D from the direction of the cross-section to the axis,up to 67%of the total settlement.The influence of surface pressure,friction coefficient and static earth pressure coefficient on soil settlement and deformation is analyzed.
作者
马家良
师文豪
王源
吴静红
MA Jia-liang;SHI Wen-hao;WANG Yuan;WU Jing-hong(School of Civil Engineering,Suzhou University of Science and Technology,215009,Suzhou,Jiangsu;Institute of Urban Underground Space Utilization and Safety Protection Technology,Suzhou University of Science and Technology,215009,Suzhou,Jiangsu,China)
出处
《建筑技术》
2020年第12期1516-1519,共4页
Architecture Technology
基金
国家自然科学基金青年项目(41907232)
江苏省人民防空办公室资助项目(2019006)
江苏省自然科学基金项目(BK20180972)
江苏省高校优势学科建设工程项目。
关键词
顶管
有限元分析
摩擦系数
静止土压力系数
pipe-jacking
finite element analysis
friction coefficient
static earth pressure coefficient
