Optimization of bolt-grouting support parameter of soft-rock subway tunnel based on orthogonal design method

Author

Shao, Wei ; Liao, Shaoming ; Shen, Mingliang ; Qiao, Weiguo

Author_Institution

Dept. of Geotechnical Eng., Tongji Univ., Shanghai, China

fYear

2011

fDate

22-24 April 2011

Firstpage

3300

Lastpage

3303

Abstract

Based on the expected subway tunnel project in Qingdao, bolt-grouting support parameters are optimized by the principle of orthogonal design and ANSYS numerical simulation calculation. The best support program is obtained: the length of bolt is 2.8 m; the row & line space of bolt is 0.8 × 0.8 m; the grout divergence radius is 1.5 m. The effect extent of the different parameters to the support result is the length of bolt >; the grout divergence radius>; the row & line space of bolt. The research results serve as a guide for the design of bolt-grouting support for soft-rock subway tunnel.

Keywords

building materials; design engineering; fasteners; geotechnical engineering; numerical analysis; railways; rocks; supports; tunnels; ANSYS numerical simulation calculation; bolt length; bolt-grouting support parameter; grout divergence radius; optimization; orthogonal design; soft-rock subway tunnel; subway tunnel project; Design methodology; Fasteners; Finite element methods; Metals; Numerical simulation; Optimization; Physics; Bolt-grouting support; Numerical simulation; Orthogonal design; Parameters optimization;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Technology and Civil Engineering (ICETCE), 2011 International Conference on

Conference_Location

Lushan

Print_ISBN

978-1-4577-0289-1

Type

conf

DOI

10.1109/ICETCE.2011.5774687

Filename

5774687