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孫國茹¹  ,  孟衛杰²  ,  孫津津¹  ,  豐土根^{2 , 3}  ,  王    威⁴  ,  張   箭²

( 1 .  中電建鐵路建設投資集團有限公司 ，北京 100070 ;  2.  河海大學 巖土力學與堤壩工程教育部

重點實驗室 ，南京 210098 ;  3 .  江西理工大學 土木與測繪工程學院 ，贛州 341000 ;

4.  北京城建中南土木工程集團有限公司 ，北京 100023)

摘   要：盾構下穿鐵路施工時，會對土體產生一定擾動，造成鐵路路基沉降，影響列車的安全運行。為探究砂土地層雙線隧道開挖對鐵路股道的變形沉降規律， 以南京地鐵 11 號線工程為例，基于 Abaqus 有限元軟件， 建立了隧道股道群一體化三維模型，分析施工過程中股道路基沉降影響規律，開展掘進參數敏感性分析，并對加固方案進行對比分析。結果表明：股道群典型股道交 5#路基中心最大沉降位于雙線隧道中心，最大沉降值為  6. 1 mm ,  大于控制值；對隧道進行深孔加固， 當徑向加固范圍為 2  m 左右時，路基最大沉降值符合控制標準； 掌子面壓力和注漿壓力是影響路基沉降的關鍵因素，適當的掌子面壓力和注漿壓力能夠有效控制路基沉降變形。

關鍵詞：盾構施工 ；下穿鐵路 ；路基沉降 ；數值模擬

中圖分類號：U455 . 43             

文獻標志碼：A            

文章編號： 1005- 8249  (2025)  02- 0124- 07

DOI:10. 19860/j.cnki.issn1005 - 8249.2025 .02.021

 

SUN Guoru¹  ,  MENG Weijie² ,  SUN Jinjin¹  ,  FENG Tugen², ³ ,  WANG Wei⁴ ,  ZHANG Jian²

(1 . China Power Construction Railway Construction Investment Group Co . ,  Ltd . ,  Beijing 100070 ,  China;

2. Key Laboratory of Ministry of Education for Geomechanics and E mbankment Engineering ,  Hohai University ,

Nanjing 210098 ,  China;  3 . School  of Civil Engineering and Surveying & Mapping Engineering ,  Jiangxi

University of Science and Technology ,  Ganzhou 341000 ,  China;  4. Beijing Urban Construction Zhongnan

Civil Engineering Group Co . ,  Ltd . ,  Beijing 100023 ,  China)

Abstract: When the shield tunnel is constructed under the railway, it will cause certain disturbance to the soil, resulting in the settlement of the railway roadbed and affecting the safe operation of trains. In order to investigate the deformation and settlement law of railway strand in sandy soil stratum double line tunnel excavation, this paper takes Nanjing Metro Line 11 project as an example, based on Abaqus finite element software, establishes an integrated three-dimensional model of tunnel strand group, analyses the settlement influence law of the strand roadbed in the process of construction, carries out the sensitivity analysis of the excavation parameters and conducts a comparative analysis of the reinforcement scheme. The research results show that: the maximum settlement of the roadbed of typical strand crossing 5# is located in the centre of the two-lane tunnel, and the maximum settlement value is 6.1mm greater than the control value. The tunnel is reinforced with deep holes, and the maximum settlement value of the roadbed meets the control standard after calculation when the radial reinforcement range is about 2m. Palm surface pressure and grouting pressure are the key factors affecting the settlement of the roadbed, and the appropriate palm surface pressure and grouting pressure can effectively control the settlement and deformation of the roadbed.

Key words: shield construction; underpassing railroad; roadbed settlement; numerical simulation

基金項目： 國家自然科學基金  (52378336) 。

作者簡介：孫國茹  (1983—) ,  男，本科，高級工程師，研究方向： 交通工程。

通信作者： 張   箭  (1989—) ,  男，博士，教授，研究方向：巖土與地下工程穩定及低碳智能開發。

收稿日期：2024 - 10 - 12