摘要
以沈阳某基坑开挖工程为例,利用有限元数值模拟方法,对基坑开挖深度及基坑与隧道间距等关键参数进行了分析,结果表明:基坑开挖不超过隧道拱顶埋深时,隧道水平位移较小,竖向出现少量上浮,但开挖超过拱顶埋深时,隧道水平变形急剧增加,拱顶开始出现下沉,随着隧道与基坑距离的增加,基坑开挖引起的隧道最终位移越小。
This paper takes an excavation of foundation pit from Shenyang as an example,using the finite element numerical simulation method on the analysis of key parameters such as depth of foundation pit excavation and distance between foundation pit and tunnel. As a result： when depth of foundation pit excavation is less than the embedded depth of the tunnel vault,then tunnel horizontal displacement is small. However,when depth of foundation pit excavation is more than the embedded depth of the tunnel vault,then tunnel horizontal displacement increases rapidly and vault sink begins to appear,with the distance increase of tunnel and foundation pit,the ultimate displacement more smaller of tunnel caused by the foundation pit excavation.
出处
《山西建筑》
2016年第7期174-176,共3页
Shanxi Architecture
基金
中国建筑工程总公司中建股份科技研发基金(基金号:CSCEC-2014-Z-35)
关键词
基坑开挖
隧道
数值模型
开挖深度
位移
foundation pit excavation
tunnel
numerical model
excavating depth
displacement
