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            盾構隧道通用管片點位優選及排版應用研究
            • 作者: 杜戰軍,吳繼峰,徐晨
            論文摘要

            盾構隧道通用管片點位優選及排版應用研究*

            杜戰軍1,吳繼峰1,徐晨2 

            (1.河南省交通規劃設計研究院股份有限公司,河南 鄭州 451450;2.河南工業大學土木建筑學院,河南 鄭州 450001)

            [摘要]以鄭州地鐵某盾構區間工程為研究對象,針對施工過程中通用管片排版選點問題,建立坐標系計算隧道設計軸線和通用管片坐標,采用最小二乘法和枚舉法進行點位優選和糾偏,并通過三維可視化模擬拼裝來輔助管片排版施工。結果表明,擁有16個拼裝點位的通用管片可優先選擇的待拼裝點位只有4種,管片選點時以16個拼裝點位進行優選的結果不完全符合實際拼裝要求,需進一步選優獲得最佳點位;以5環糾偏環進行動態糾偏,優化后可將超過106次運算減少到1 364次,有效提高管片選點效率;利用三維可視化模擬拼裝技術,有效避免管片通縫并保證隧道成環質量。

            [關鍵詞]盾構;隧道;通用管片;排版計算;點位優選;動態糾偏

            [中圖分類號]U231           [文獻標識碼]A           [文章編號]1002-8498(2021)19-0006-06

            Research on Point Selection and Layout Application of General Segment in Shield Tunnel

            DU Zhanjun1, WU Jifeng1, XU Chen2 

            (1.Henan Provincial Communications Planning and Design Institute Co., Ltd., Zhengzhou, Henan 451450, China; 2.College of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou, Henan 450001, China)

            Abstract:Taking a shield tunnel project in Zhengzhou as the object to solve the problem of general segment layout and point selection in the construction process. The coordinate system is established to calculate the tunnel design axis (DTA) and the segment coordinates, and the least square method and the enumeration method are used for point selection and dynamic deviation correction. Then use 3D simulation assembly technology to assist in the layout of the segment. The results show that there are only 4 types of points to be assembled for general segment with 16 assembly points, and the optimal locations for point selection by 16 points do not fully meet the assembly requirements, so further optimization is needed to obtain the best point. Dynamic deviation correction is performed by the 5 ring segment, more than 106 operations can be reduced to 1 364 times with optimization, which effectively improves the efficiency of the point selection. The 3D simulation assembly technology can effectively avoid the straight joint of the segment and ensure the quality of the tunnel.

            Keywords:shields; tunnels;general segment;layout calculation;point selection;dynamic deviation correction

            * 河南省交通運輸廳科研項目(2016B1

            [作者簡介]杜戰軍,教授級高級工程師,Email: 401560615@qq.com

             

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