Comparison and Selection of Reinforcement Schemes for Shield Tunnelling Close Crossing High-speed Railway Viaduct Group

2019 3rd International Workshop on Renewable Energy and Development

能源学;生态环境科学

Wu, Bo^1^2^3 ; Zhang, Ziyi^1^2^3 ; Huang, Wei^1^2^3

College of Civil Engineering and Architecture, Guangxi University, 100 University Road, Nanning, Guangxi

530004, China^1

Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University, 100 University Road, Nanning, Guangxi

530004, China^2

Key Laboratory of Disaster Prevention and Engineering Safety of Guangxi, Nanning

530004, China^3

关键词: Cast in place pile;    Construction process;    Group-pile foundation;    Grouting reinforcements;    High;    speed railways;    Horizontal displacements;    Reinforcement effects;    Shield tunnelling;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/267/4/042119/pdf
DOI  :  10.1088/1755-1315/267/4/042119

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Numerical simulation is carried out of the group pile foundation project of the shield tunnel on Nanjing metro airport line which crossing Beijing-Shanghai high-speed railway. The paper analysed the characteristics of the horizontal displacement along bridge of the pile foundation during the whole crossing process. On this basis, the reinforcement effects of grouting reinforcement, longitudinal beam and cross bracing reinforcement, bored cast-in-place pile reinforcement are comparative analysed with the horizontal displacement alone bridge of pile as the evaluation index. Also, the feasible program of the shelter pile reinforcement could be determined by combing with the construction process and conditions.