| 基于树根桩加固的震后公路路基边坡综合修复技术 |
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| 引用本文： | 肖颜.基于树根桩加固的震后公路路基边坡综合修复技术[J].西北地震学报,2019,41(1):117-123. |
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| 作者姓名： | 肖颜 |
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| 作者单位： | 湖南交通职业技术学院, 湖南 长沙 410132;长沙理工大学, 湖南 长沙 410114 |
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| 基金项目： | 国家重点基础研究发展计划（973）项目（2006CB705500）；湖南省教育厅科学研究项目（13C24） |
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| 摘 要： | 为实现震后路基边坡的快速修复,提出基于树根桩加固的震后公路路基边坡综合修复技术。根据路基震害及地质环境对路基边坡的影响分析因素,采用树根桩技术及气泡轻质填土技术修复路基边坡;利用三维有限差分法模拟树桩加固气泡轻质填土修复后路基边坡得到参数值,再结合强度折减法计算得到的路基边坡稳定系数,最后得到优化树根桩的设计参数,以实现震后路基边坡综合修复。以上方法通过仿真模拟实验,得到最优的树根桩排距为2.5 dm。
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| 关 键 词： | 树根桩加固 路基边坡 边坡修复 气泡轻质填土技术 |
| 收稿时间： | 2018/7/28 0:00:00 |
Technology Based on Root-Pile Strengthening for the ComprehensivePost-earthquake Restoration of Highway Subgrade Slopes |
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| XIAO Yan.Technology Based on Root-Pile Strengthening for the ComprehensivePost-earthquake Restoration of Highway Subgrade Slopes[J].Northwestern Seismological Journal,2019,41(1):117-123. |
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| Authors: | XIAO Yan |
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| Institution: | Hunan Communication Engineering Polytechnic, Changsha 410132, Hunan, China;Changsha University of Science & Technology, Changsha 410114, Hunan, China |
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| Abstract: | A comprehensive technology for accelerating the post-earthquake restoration of subgrade road slopes is proposed. The technology is based on root-pile reinforcement and foamed lightweight soil technology, and restoration is performed in accordance with subgrade earthquake damage and the influence analysis results of the geological environment of the subgrade slope. The three-dimensional finite-difference method is used to simulate the restored subgrade slope and to obtain parameters. Then, the design parameters of the optimized root piles are acquired by combining the stability coefficients of the subgrade slope calculated through the strength reduction method. Finally, the post-earthquake subgrade is comprehensively restored. Simulation experiments reveal that the optimal root-pile spacing is 25 cm. |
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| Keywords: | root-pile strengthening subgrade slope slope restoration foamed lightweight soil technology |
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