摘要
文章基于厦门海底隧道现场监测数据并结合数值方法,对地下连续墙在隧道穿越富水砂层时的应用效果进行了研究。结果表明,在施作地下连续墙并对地层进行降水后,隧道结构变形显著减小,其中CRD1部拱顶下沉降低了约35%～60%,CRD3部拱顶下沉降低了约25%～50%,CRD1部洞周收敛降低了约50%左右。通过比较分析现场实测数据和数值计算结果可知,两者得出的隧道结构变形总体趋势一致,量值基本吻合。文章所采用的方法及研究结果对厦门海底隧道后续施工,以及类似的工程有一定的参考意义。
Based on the field moni toting data of Xia＇men subsea tunnel incorporating numerical analysis, the application effect of diaphragm wall to traverse water-soaked sand was analyzed. Results indicated that the deformations of tunnel structure were diminished evidently after diaphragm wall was constructed together with dewatering： the crown settlement of section CRD1 was diminished about 35 -60%, the crown settlement of section CRD3 was diminished about 25 -50 %, and the convergence of section CRD3 was diminished about 50 %. By contrasting the results of in-situ monitoring and numerical analysis, it was found that they agreed fairly well with each other. This can be taken for reference by the subsequent construction of Xia＇men subsea tunnel and similar engineering projects.
出处
《现代隧道技术》
EI
北大核心
2008年第5期54-58,共5页
Modern Tunnelling Technology
基金
863课题
名称:大型跨江海隧道结构力学特征及整体化设计方法研究.编号:20006AA11Z116
关键词
海底隧道
富水砂层
地下连续墙
监控量测
数值分析
Subsea tunnel
Water-soaked sand stratum
Diaphragm wall
Monitoring
Numerical analysis
