摘要
以福建省大剧院A区坑中坑基坑为工程背景,分析了内、外坑开挖的相互影响,并通过岩土工程数值分析对比研究了不同内外坑间距W、不同开挖深度H时围护结构的变形规律,发现了α(α=W/H)与内外坑相互影响程度的关系,同时利用实际工程监测数据进行验证,得出了坑中坑基坑内、外坑开挖相互影响的临界间距约为5倍的外坑或内坑开挖深度。
Based on the pit-in-pit excavation of Fujian grand theatre,the interplay between outer pit and inner pit was analyzed. The deformation of retaining structure under the conditions of different distances between outer pit and inner pit,and different depth of eacavation were analyzed by using the special geotechnical software FLAC with numerical simulation,and a relationship between α（ α = W / H） and the critical influence distance of outer pit and inner pit was found; Then,the actual monitoring data of the project was analyzed. The common conclusion. that the critical influence distance between outer pit and inner pit was five times of depth of outer pit or inner pit was obtained.
出处
《福建建筑》
2016年第1期39-42,共4页
Fujian Architecture & Construction
基金
福建省教育厅中青年教师教育科研项目(JB13145)
福建工程学院青年科研基金项目(GY-Z09080)
关键词
坑中坑
围护结构
临界间距
Pit-in-pit excavation
Retaining structure
Critical distance
