摘要
分析成都蓝光锦绣城基坑工程事故,基坑变形原因是多方面的;膨胀土基坑开挖卸荷、干湿交替,土体强度急剧降低,基坑边坡稳定性急剧下降;降雨诱发下,基坑剧烈变形,支护桩剪断,最后不得不采取桩后御荷、坡面封闭紧急措施,以保护支护桩及减小坡体变形等。针对该膨胀土基坑的破坏特点,提出了从认识强度参数、加强防水措施、改进设计和规范施工程序等方面来预防基坑事故发生,可对膨胀土基坑的设计和施工提供一定的指导和帮助。
An expansive soil foundation pit accident in Languangjinxiucheng, Chengdu resulted from many factors such as side slope stability decrease due to excavating and rainfall and so on. This paper makes an approach to the above-mentioned causes of the accident and takes some preventive measures for such accident such as calculating strength parameter; strengthen waterproof measures, improving design procedure and so on.
出处
《四川地质学报》
2015年第1期126-131,共6页
Acta Geologica Sichuan
关键词
膨胀土
深基坑
事故
成都
expansive soil
deep foundation pit
accident
Chengdu
