STUDY ON APPLICATION OF CONCRETE-FILLED THIN-WALLED STEEL TUBES IN ROADWAY(TUNNEL) SUPPORTING
【Abstract】 At present, it is not common to use concrete-filled thin-walled steel tubes as the roadway(tunnel) supporting. However, there are lots of researches on surrounding rock supports and concrete-filled thin-walled steel tubes respectively, and plenty of available conclusions of relevant test methods and numerical simulations have been obtained .This paper is to make a summary of these results and then a outlook for the future study is raised. It is concluded that the concrete-filled thin-walled steel tube is of higher bearing capacity, good cooperation with surrounding rocks as well as lower cost. But some critical problems still need to be solved, such as the coupling effect between the concrete-filled thin-walled steel tube and surrounding rocks, how to ensure its stable bearing capacity through proper construction measure and simplified calculation method for engineering practice.
【Key words】 concrete-filled thin-walled steel tube； roadway(tunnel) supporting； coupling effect；
- 【文献出处】 钢结构 ,Steel Construction , 编辑部邮箱 ,2011年04期