基于FLAC3D的返包式砂泥岩加筋挡墙稳定性分析

在对砂泥岩混合料工程特性进行试验的基础上,运用FLAC3D数值模拟和现场变形监测相结合的方法,对南充高坪机场跑道东侧一段两级砂泥岩加筋挡墙的稳定性进行了分析。得出其在快速施工加载过程中及竣工后的变形发展规律,从模拟结果可以看出,砂泥岩混合料填筑的加筋挡墙经过合理科学的填筑压实后,具有强度高、变形小、变形稳定速度较快的优点。竣工后现场变形监测曲线发散趋势不明显,挡墙目前处于较稳定状态。

Analysis on Stability of Sand-mudstone Reinforced Retaining Wall with Wrapped Face Based on FLAC3D

Based on the test for engineering properties of sand-mudstone mixture, this paper, by means of FLAC3D numerical simulation together with on-site deformation monitoring, made analysis on the stability of a sectional two-step reinforced retaining wall in sand-mudstone at the east side of the runway in Nanchong Gaoping Airport, and concluded the law of deformation development in the course of fast construction and loading, and after completion of works. From the simulation result, it is found that the reinforced retaining wall filled by sand-mudstone mixture after proper filling and compaction will be of high strength, small deformation and fast rate of deformation going steady. The divergence trend of the on-site monitoring curve after completion is not obvious, and the retaining wall is in stable state at present.