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工程科学与技术:2008,40(3):43-46
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高切坡超前支护桩作用机制研究
(中国科学院-水利部成都山地灾害与环境研究所,四川 成都 610041)
Study on the Interaction Between High Cutting Slope and Pre-embedded Piles
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投稿时间:2006-12-14    
中文摘要: 超前支护桩能在边坡开挖前对危险性高切坡进行超前加固,可以有效地降低边坡开挖施工期间的破坏,是边坡工程的新思路。为了对高切坡超前支护桩的作用机制有更清楚的认识,为超前支护桩的设计提供理论支持,采用有限差分软件FLAC3D,分析了超前支护桩与高切坡相互作用中超前支护桩上土压力的大小、分布特点及其影响因素,并与其它理论计算的结果进行比较分析。研究结果表明,FLAC3D的计算结果比较合理,施加在超前支护桩上的土压力荷载与坡体岩土性质和支护桩的相对刚度有关,大致呈梯形分布。
Abstract:Slope failures or even landslides are often triggered by improper excavation in high slope construction. Pre-embedded piles reinforce the slope before excavation. This method is a new way to protect high slopes from failure in cutting. In order to improve piles design in slope pre reinforcement, it is necessary to have a good understanding of the behaviour of piles in excavated slopes. The finite difference code FLAC3D is adopted to analysis the lateral soil pressure acted on the pre embedded piles. The numerical results is analyzed and compared with theoretical calculation results, it is shown that the lateral soil pressure on the piles is related with the soil properties and the stiffness of piles.
文章编号:20080308     中图分类号:    文献标志码:
基金项目:国家自然科学基金资助项目(40572158);交通部西部科技资助项目(国道317线西藏段公路边坡病害超前诊断及处治技术研究)
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何思明,李新坡.高切坡超前支护桩作用机制研究[J].工程科学与技术,2008,40(3):43-46.
.Study on the Interaction Between High Cutting Slope and Pre-embedded Piles[J].Advanced Engineering Sciences,2008,40(3):43-46.