摘要
通过FLAC 3D软件对K1431+380左侧改扩建高边坡建立过程稳定性分析模型并进行数值模拟分析,结果如下:1在无支护分级开挖时,边坡在第三步开挖结束后,处于最不稳定时段;2对于K1431+380改扩建边坡来说,二次开挖施工期支护存在一个最佳时机,即最关键的防护时步,在该最佳时机及时对边坡进行支护会使边坡在施工期的稳定性达到最佳。
The analysis model with the process tion and expansion was set up by the software FLAC are given as： ①When excavate without support, the stability of K1431 ＋ 380 left high slope reconstruc- 3D, through the numerical simulation, the results slope got in the most unstable period after the third step excavation; ②To the K1431 ＋ 380 high slope reconstruction and expansion, it has a best time which is the most critical step when the support measures should be done, and when the support measures are given at this critical step, the slope stability will achieve the best degree.
出处
《公路工程》
北大核心
2015年第6期156-159,共4页
Highway Engineering
基金
广西科学研究与技术开发计划项目(桂科转1298011-2)
湖南省自然科学基金项目(12JJ6052)
关键词
FLAC
3D
改扩建高边坡
过程稳定性
FLAC3D
high slope of freeway reconstruction and expansion
process stability
