摘要
土钉支护是一种经济便捷的基坑支护方式。以往的土钉支护结构的设计中,多以强度为控制指标,而很少考虑支护结构的变形。通过对土钉面层受力分析,建立了其势能方程。基于最小势能原理推求了土钉支护基坑水平位移的闭合形式解。通过工程算例,将结果分别与实测数据和数值解进行了对比。结果表明:此解析解是合理可行的,可以满足工程需要。
Soil nailing is an economical and convenient bracing structure for foundation pits.In previous researches,the strength control is the main standard in the structural design of the soil-nail braced structure,but the deformation control is rarely considered.A closed-form solution for the horizontal displacement of the soil-nail braced structure is presented.An energy equation is established based on the mechanical characteristics of the surface layer.According to the principle of the minimum potential energy,a closed-form solution on the horizontal displacement of the soil-nail braced structure is derived.The results are validated through a comparison with a project case.It shows that this analytical solution is reasonable and feasible and can satisfy the engineering requirements.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2010年第3期415-419,共5页
Chinese Journal of Geotechnical Engineering
基金
新疆水利水电工程重点学科基金项目(xjzdsk-2002-10-05)
关键词
基坑
土钉支护
最小势能原理
闭合形式解
foundation pit
soil nailing
minimum potential energy principle
closed-form solution