%0 Journal Article
%T 基于蠕变试验的高填方路基沉降的数值模拟<br>Numerical Simulation of Settlement of High Fill Roadbed Based on Creep Test
%A 蔡红燕
%J Hans Journal of Civil Engineering
%P 257-267
%@ 2326-3466
%D 2021
%I Hans Publishing
%R 10.12677/HJCE.2021.104029
%X <div style=\"text-align:justify;\">
	本文主要研究了高填方路基的沉降特性，取定西至临洮高速公路某段高填方路基工程路基填土进行了一维固结蠕变试验，研究了路基填土在相同压实度、不同含水率条件下的蠕变特性，分析了含水率对路基填土蠕变特性的影响，再利用Abaqus数值软件建模分析，模拟计算了高填方路基的沉降。结果表明：路基填土含水率越大，填土变形越大，路基填土蠕变稳定的时间越长；路基填筑高度越高，填土变形越大，填土蠕变稳定的时间越长；Abaqus软件自带的Drucker-Prager塑性和蠕变耦合模型可以很好地反映各级荷载下路基填土变形与时间的变化规律，可以作为高填方路基填土的蠕变模型。<br />
This paper mainly studied the settlement characteristics of high-filled roadbeds. One-dimensional consolidation creep test was carried out on the high-filled roadbed engineering of a certain section of Dingxi-Lintao Expressway. The creep characteristics of subgrade fill under the same compaction degree and different moisture content conditions are studied. The influence of moisture content on the creep characteristics of subgrade fill is analyzed. Then, it uses the Abaqus numerical software modeling analysis to simulate and calculate the settlement of the high-fill roadbed. The results show: The greater the water content of the subgrade fill, the greater the deformation of the fill, and the longer the time for the creep and stability of the subgrade fill; The higher the filling height of the subgrade, the greater the deformation of the fill, and the longer the time for the fill to creep and stabilize; The Drucker-Prager plasticity and creep coupling model that comes with the Abaqus software can well reflect the changes in the deformation and time of subgrade fill under various loads, and can be used as a creep model for high fill subgrade fill.
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%K 高填方，路基填土，一维固结蠕变试验，路基沉降，数值模拟<br>High Fill
%K Subgrade Fill
%K One-Dimensional Consolidation Creep Test
%K Subgrade Settlement
%K Numerical Simulation
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=41691