系梁施工對既有盾構隧道影響的數(shù)值模擬

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【中圖分類號】：U455 【文獻標志碼】：A 【文章編號】：1008-3197（2025）03-14-03

【DOI編碼】：10.3969/j.issn.1008-3197.2025.03.004

Numerical Simulation of the Influence of Tie Beam Construction on Existing Shield Tunnel

CHEN Yaqi

（CCCC Second Highway Consultants Co.Ltd.，Wuhan 430056，China）

【Abstract】：Inorder tostudytheimpactofconstructionloadsonexistingshieldtunneld，thisstudytakestheconstruction of the tie beamattherailway-related pilelocation in ContractSectionA1of thefirstphase projectof Fuzhou Binhai New City Expressway as acase.The finite element software midas GTS NX was employed for numerical simulation，aiming to analyze the additional stress imposed on the shalow-buried existing shield tunnel and the consequent lining displacement during the tie beam construction process.Based on the simulation results， anassessment was made todetermine whether the tie beam construction scheme complies with relevant specifications，thereby ensuring the safe operation of the existing tunnel.

【Keywords】：tie beam;constructionload;shield tunnel

隨著城市基礎設施建設推進，新建構筑物不可避免與既有結構產(chǎn)生交叉，新建工程施工對既有建筑影響的評估對于既有構筑物安全運營至關重要。（剩余2221字）