Construction technology analysis of shield crossing river bridge pile in Zhengzhou subway tunnel
Based on the first phase project of Longhu Central Ring Road Station-Zhengda First Affiliated Hospital(East District)Station of Zhengzhou Metro Line 8,this paper analyzes the possible problems of shield crossing rivers and bridge piles,investigates the performance of shield machine before construction,controls the advancing speed,synchronizes grouting and adjusts the posture of shield machine during shield construction,pays attention to grease injection at shield tail and strictly controls segment installation after tunneling,sets safety measures,and pays attention to pipeline cleaning.The results show that the adopted construction technology and control measures can effectively improve the effect of EPB shield tunneling under rivers and reduce construction risks.
Zhengzhou areaunderpass the rivershield tunnelingconstruction control
万方数据
维普
