摘要
为了研究反压土在减小基坑开挖引起的地面沉降和坑底土体回弹的影响,利用经典土压力理论分析了反压土的作用机理,依据经验公式探讨了考虑反压土时地基回弹量和基坑坑底抗隆起稳定性验算的计算公式,最后通过数值模拟分析验证基坑开挖过程中反压土存在的影响。结果表明,反压土的存在能有效降低基坑开挖过程中周围地面沉降和坑底隆起。研究结论为如何减小基坑工程对周围环境的影响提供重要理论依据,同时还具有重要的环境效益。
To study the influence of earth berm in reducing land subsidence and foundation rebound caused by pit excavation,classical soil mechanics theories were used to analyze the mechanism of earth berm,empirical equations were used to draw calculation formula of foundation rebound and basal heave stability checking when considering earth berm,at last the effects of earth berm in pit excavation were tested by numerical simulation analysis.It is shown that the earth berm can effectively reduce the surrounding land subsidence and foundation rebound during pit excavation.The experimental results not only provide an important theoretical basis on how to reduce the effects of pit excavation on surrounding environment,but also have important environmental benefits.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2014年第5期97-100,共4页
Journal of Wuhan University of Technology
基金
国家自然科学基金(51178290)
岩土力学与工程国家重点实验室资助课题(Z013002)
