Impact dynamics analysis of shed tunnel structure hit by collapse rock-fall
This paper bases on the prototype of the actual shed tunnel structure, study on contact force, displacement, damage, energy of shed tunnel under impact of rock-fall. By ABAQUS finite element software to simulate the process of roll-fall impact knowable：Rock-fall at different speeds and incident angle shocks on shed tunnel has great influence to concrete protective structure of contact force and displacement；Concrete protective structure damage the worst hit area of occurred with roll-fall contact area, the second is inclined leg column top and in connection with the pillars of the beam damage is also very serious, In practical projects first should pay attention to strengthen the intensity of the pillars with beam joints and prevent damage：From the angle of energy we can see that shed tunnel is mainly through the concrete protective structure to absorb and consumption impact energy, soil cushion absorption and consumption impact energy is very limited, to alleviatethe impact of concrete protective layer rolling damage, and suggestions in shed tunnel bearing place additional energy shock absorber to increases protection structure system soft degrees under the condition of minimize the shed tunnel weight, achieve the purpose of decrease shock energy.
混凝土保护层 冲击能量 辊下降 隧道落石
YANG Lu LI Shi Min WU Zhi Min SHEN Xin Pu
Dalian University of Technology, DaLian, China Shenyang University of Technology, ShenYang, China Shenyang University of Technology, ShenYang, China Dalian University of Technology, DaLian, China
国内会议
太原
英文
1-7
2011-07-01（万方平台首次上网日期，不代表论文的发表时间）