桩承式加筋路堤中加筋体的计算方法研究现状

摘要

在对国内外桩承式加筋路堤中加筋体的计算方式进行总结的基础上,分析了加筋体在竖向荷载和边坡推力影响下的计算方式的区别;利用有限元对加筋体进行模拟能够较为直观的看出格栅的变形,国内学者目前都假设格栅变形在弹性范围内,但采用不同的假设单元来进行模拟,对加筋体与土体之间的摩擦方式采用直接嵌入法和Goodman单元模拟等等,尽管计算的方式不同,计算结果与实际受力情况还是相近的。%Based on the summary of the calculation methods for the reinforcement in the pile-supported reinforced embankments at home and abroad,the differences between the calculation methods of the reinforcement bodies in the vertical load and under the influence of slope thrust are analyzed respectively.Using the finite element to simulate the reinforcement can more directly see the deformation of the grid.The scholars in China all assume that the deformation of grid would be in the elastic range,but the different assumption units are adopted to carry out the simulation,and the friction way between the reinforced body and soil body is simulated by using the direct embedding and Goodman elements.Although there is the difference in the calculation methods,the results of the calculations are close to the actual stress.