Author(s)

Li Guangyao ¹, Wang Qiusheng ¹, Deng Qihua ², Li Pei ¹, Xiu Yibing ¹

Affiliation(s)

¹ The Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing, 100124, China
² China Railway 22nd Bureau Group Co., Ltd, Beijing, 100043, China

Corresponding Author

Wang Qiusheng

ABSTRACT

For the underpass railway large-section box culvert jacking and pipe jacking project, the key to ensuring the normal operation of the existing railway is to maintain the smoothness and stability of the track, railway settlement monitoring and line reinforcement, and box culvert and pipe culvert attitude control are the keys to solving this problem. Taking the Beijing-Harbin high-speed railway project under a city road in Beijing as an example, the law of railway track settlement during the implementation of box culvert jacking was analyzed according to real-time monitoring data. The monitoring results show that accelerating the pouring of the bedding and grouting and strengthening the railway subgrade on both sides of the foundation pit can effectively control the settlement of the railway subgrade and reduce the impact of subsequent construction on the railway, and the line renovation and secondary grouting reinforcement can effectively improve the smoothness of the railway. Combined with the comparative analysis of numerical simulation results, the necessity of line refurbishment and rail fastening combination reinforcement in actual construction is verified.

KEYWORDS

Underpass the railway; control of deformation; monitoring; jacking; large cross-sectional box culvert; line reinforcement

CITE THIS PAPER

Li Guangyao, Wang Qiusheng, Deng Qihua, Li Pei, Xiu Yibing, Deformation Analysis of the Cable Reinforcement System of Large Section Box Culvert Roof Entry and Downward Penetration. Journal of Civil Engineering and Urban Planning (2023) Vol. 5: 73-84. DOI: http://dx.doi.org/10.23977/jceup.2023.050310.

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