摘要
以贵州地区某高速铁路软土路基为研究对象,通过数值模拟并结合实测数据,提出常规观测方法与数值模拟相结合的沉降观测改进方案,分析路堤填筑过程的沉降变形规律。结果表明,数值模拟可对填筑过程中的沉降量进行预测,与常规检测方案结合后可对分步填土厚度和观测时间安排提供指导,在此基础上对施工进度进行合理调整,最终达到缩短工期的目的;土体内部超孔隙水压力的变化,从另一角度对土体固结快慢进行了论述,并发现沉降速率与超孔隙水压之间的相关性。
A high-speed railway soft-soil subgrade in guizhou area as the research object, through the numerical simulation and combination based on the measured data, puts forward the routine observation method combined with numerical simulation of settlement observation improvement scheme, and the settlement deformation law of embankment filling process carried on the thorough analysis. Results show that the numerical simulation to predict settlement in the process of filling, combined with conventional detection scheme, to step by step the thickness of the filled soil and the observation time arrangement to provide certain guidance function, make reasonable adjustments on the basis of the construction schedule adjustment, eventually achieve the goal of shortening the time limit for a project. Internal excess pore water pressure of soil from another angle changes of the soil consolidation speed are discussed, and found that the sedimentation rate pressure.
作者
鲍先凯
黄春辉
赵泽蔚
武晋文
BAO Xian-kai;HUANG Chun-hui;ZHAO Ze-wei;WU Jin-wen(School of Civil Engineering, Inner Mongolia University of Science and Technology, 014010, Baotou, Inner Mongolia, China;School of Science, North University of China, 030051, Taiyuan, China)
出处
《建筑技术》
2019年第5期579-582,共4页
Architecture Technology
基金
岩石高温压三轴裂机理研究(51504220)
关键词
软土
填方路堤
固结沉降
超孔隙水压力
数值模拟
soft-soil
embankment
consolidation settlement
percolation rate
numerical simulation
