摘要
文章采用极限平衡法,分别建立了地下连续墙成槽施工槽壁土体整体稳定性和局部稳定性力学模型,推导得到了保证槽壁稳定的成槽施工泥浆重度临界值计算公式,形成了基于槽壁稳定性的地下连续墙成槽施工泥浆重度设计方法,并进行了实例应用。结果表明:所建立的泥浆重度设计计算方法是可靠的,且在类似工程的松散砂卵地层中,宜采用考虑槽壁局部稳定时的泥浆设重度计算值。
Based on the limit equilibrium method, mechanical models for the overall stability and local stability of a slot wall are established, calculation formulas for the critical slurry volume weight values are derived to guarantee stability of the slot wall during trenching construction, a design method for the slun＇y volume weight is obtained on basis of slot wall stability during trenching construction of the diaphragm wall and a case application is carried out. The results show that the proposed calculation method for slurry volume weight is reliable and it suggests that slurry, volume weight calculations under considering local stability of the slot wall should be taken when the similar project locates in loose strata with sand and pebbles.
出处
《现代隧道技术》
EI
CSCD
北大核心
2018年第1期178-183,共6页
Modern Tunnelling Technology
基金
国家自然科学基金项目(51508575)
中国博士后科学基金项目(2016T90764)
湖南省创新平台与科技人才项目(2015RS4006)
关键词
地下连续墙
软弱地层
泥浆重度
极限平衡
整体稳定
局部稳定
Diaphragm wall
Soft ground
Volume weight of slurry
Limit equilibrium method
Overall stability
Local stability
