【作者】 王智超； 蒋明镜； 聂志红； 王晶晶；

【Author】 WANG Zhichao,JIANG Mingjing,NIE Zhihong,WANG Jingjing 1.Department of Geotechnical Engineering Tongji University,Shanghai 200092 China 2.College of Civil Engineering and Mechanics,Xiangtan University,Xiangtan 411105 China 3.School of Civil Engineering,Central South University,Changsha 410075 China

【机构】 同济大学地下建筑与工程系； 湘潭大学土木工程与力学学院； 中南大学土木工程学院；

【摘要】 本文结合沪昆客运专线填方路基工程,对典型路堤的工后沉降问题进行了有限元分析。通过对粗粒土填料进行分级压缩蠕变试验获得了蠕变曲线簇,采用ADINA软件中的Law3蠕变模式和单元生死方法来计算路堤填筑全过程的分层沉降量,并以控制路堤工后沉降量分别在20mm、15mm以及10mm为目标,反算获得了相应地基土的力学参数,这为施工中有效控制路堤工后沉降提供了有力依据。更多还原

【Abstract】 In this paper,combining the fill embankment engineering of Shanghai-Kunming passenger dedicated line,a typical embankment post-construction settlement problem is analyzed by finite element method. By the graded compression creep tests on coarse - grain fill,its creep curve cluster is obtained.Using the Law3 creep mode in ADINA software as well as element birth and death method,the stratified settlement of the embankment can be calculated with the whole filling process,and in order to controlling the emban kment settlement within 20mm,15 mm and 10mm,mechanical parameters of the corresponding foundation soil is obtained by continuous reverse calculation,which provides a strong basis for the effective controlling the embanment settlement in the construction.更多还原