新建地鐵附屬結(jié)構(gòu)施工對既有地鐵結(jié)構(gòu)的影響研究

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關(guān)鍵詞：地鐵附屬結(jié)構(gòu)；既有地鐵；Midas-GTS；變形控制；運營安全

中圖分類號：U451；U231；TU753文獻標(biāo)志碼：A 文章編號：1003-5168（2025）13-0071-06

DOI：10.19968/j.cnki.hnkj.1003-5168.2025.13.014

Study on the Impact of New Metro Ancillary Structure Construction on Existing Operational Metro Structures

WANG Yuanliu1GE Xinhu'YI Lingbing1 ZHANG Peng2NI Hanjie2DENG Kangkang2 （1.Zhengzhou Urban Construction Vocational College， Zhengzhou 45oooo，China; 2.China Railway Tunnel Bureau Group （Shanghai） Special High-Tech Co.，Ltd.， Shanghai 2013O6， China）

Abstract： [Purposes] Study the impact of constructing of new metro ancillarg structures on existing operatonal metro structures.[Methods] Taking a specific metro project as a case study，a three-dimensional numerical calculation model was established using the numerical simulation software Midas GTS to simulate the construction process of new entrances and connecting channels.The deformation patterns and stress variation in the existing metro structure caused by the construction of new metro entrances and connecting channels were analyzed.[Findings] During the construction of new metro ancillary facilities， the maximum vertical defor mation of the existing metro station structure and tunnel segment structure was 0.27mm and 0.03mm respectively，both below the vertical deformation control value of O.3 mm; during the construction process，the maximum horizontal deformation of the existing metrostation structure was 0.19mm ，and the maximum horizontal deformation of the existing tunnel segment structure was 0.04 mm;the maximum differential settlement in the track area reached 0.13mm at Deformation Joint No2. After the completion of construction，the maximum and minimum principal stresses of the existing metro station structure reduced by O.42 MPa and O.34 MPa respectively，and the maximum and minimum principal stresses of the tunnel segment structure reduced by O.O6 MPa and O.O1 MPa respectively. [Conclusions] The deformationand stress variations caused by construction are both below the limit values.The accuracy of the model was verified by comparing the numerical calculation results with the field monitoring data.The research results can provide reference for the design and construction of similar projects.

Keywords： metro accessory structures; existing metro; Midas-GTS； defor mation control; operational safety

0 引言

隨著我國城市化進程的加速，地鐵網(wǎng)絡(luò)逐步加密，新建地鐵線路與既有線路的空間交叉問題日益突出。（剩余5136字）