摘要
利用积分法建立了土钉支护结构的内部稳定性安全系数计算模型和边坡最危险滑移面搜索模型,利用网格法对最危险滑移面进行动态搜索和确定,计算其内部稳定性系数。在保证内部整体稳定性的条件下,进一步建立了外部稳定性即抗滑移和抗倾覆的稳定性验算模型,推导了验算公式,以求得深基坑土钉支护结构的最优设计。最后结合工程实例,分析讨论了土钉支护结构设计中存在的问题,为其发展应用提供了实践经验。
The calculation model for internal global safety factor and the search model for the most dangerous sliding surface of soil nailed supporting structure are established respectively by using integration method. The most dangerous sliding surface has been searched and determined by using mesh method, and the internal safety factor is calculated. After the internal stability has been assured,the checking model for external stability including anti-sliding and antidumping is further founded, and the checking formula are derived. Then the optimum design results of soil nailed structure are achieved. Finally, combining an engineering example, the existing problems in the design of soil nailed structure are discussed, which provides practical experience for the use and development of that supporting structure.
出处
《四川建筑科学研究》
北大核心
2009年第1期115-119,共5页
Sichuan Building Science
基金
甘肃省科技攻关资助项目(2GS064-A52-040)E-mail:gsutzhouy@163.com
关键词
深基坑工程
土钉支护结构
稳定性
积分法
安全系数
deep excavation engineering
soil nailing supporting structure
stability
integration method
safety factor
