摘要
以中原地区某地铁R4号线为工程实例,对盾构管片和周边土体的沉降时行了数值模拟,结果表明:联络通道及泵房开挖后盾构管片和周边土体均产生一定的沉降,其中盾构管片的最大沉降为1.2mm,地表土体的最大沉降为3.5mm。提出了针对性的小导管加固措施,并制定了详细的联络通道及泵房施工技术措施,为今后的类似工程提供了参考。
The R4 metro line in the Central Plains as an example, and shield segments and surrounding soils are numerically simulated, which shows that shield segment and surrounding soils generated settlements caused by cross passage and pumping station excavation, the maximum settlement of shield segment is 1.2 mm and the maximum surface settlement of soils is 3.5 mm. Specific measures for strengthening small ducts are put forward, and detailed technical measures for connecting passage and pump house are worked out, which provides reference for similar projects in the future.
出处
《中国建材科技》
2018年第2期106-110,共5页
China Building Materials Science & Technology
基金
河南省科技攻关项目(No.162102210019):郑州地铁盾构隧道下穿建(构)筑物的施工控制措施研究
关键词
联络通道
数值模拟
沉降
施工措施
liaison channel
numerical sinmlation
sediments
construction measures
