【作者】 孙钧； 虞兴福； 孙旻； 李向阳；

【Author】 SUN Jun,YU Xing-fu,SUN Min,LI Xiang-yang (Institute of Tunnels and Underground Engineering,Tongji University, Shanghai 200092,China;Academicians’ Research Studio,Shanghai Urban Construction Group,Shanghai 200023,China)

【机构】 同济大学隧道与地下工程研究所； 上海城建集团院士研究室；

【摘要】 结合上海市中环线北虹路下立交地道工程采用"管幕-箱涵"顶进非开挖施工全过程,分别应用AN- SYS和FLAC三维数值分析程序对顶进施工所引起的地表变形位移进行了全过程的动态仿真模拟。其次,分别应用弹性地基梁法和室内模拟试验以及现场实测数据比拟法对地表变形特征进行了系统研究;最后,应用软科学的智能方法,对管幕-箱涵顶进非开挖工法所引起的地表变形位移进行了人工神经网络滚动预测。其研究成果已经提交施工部门参考和采用。更多还原

【Abstract】 By utilizing the Shanghai Mid-ring Line-Beihong Road underground intersection traffic tunneling project which was constructed by using the pipe-roofing and large section box-culvert jacking trenchless excavation technology,as an engineering background,the authors give a systematic study on the numerical simulation of ground movement in the whole construction process of above-mentioned project by using the ANSYS&FLAC 3-D computer programming respectively.Secondly,by adopting the elastic foundation beam method,lab.-model experiment,and actual test data analogical techniques in situ separately,the authors give a comprehensive study on characteristics of the ground movement variations developed in construction of the large section box jacking with pipe-roofing trenchless techniques.Finally,as adopting the intelligent soft science method, the authors make a so-called"multi-stepped rolling"prediction study by using artificial neural networks (ANN) on surface ground settlement increasing with time around the project.The results have been provided to the design and construction companies for a valuable reference.更多还原