Dynamic response and optimization of an inclined steel rock shed by the graded energy dissipating method Dynamic response and optimization of an inclined steel rock shed by the graded energy dissipating method

最小化 最大化

Vol16 No.1: 138-152

Title】Dynamic response and optimization of an inclined steel rock shed by the graded energy dissipating method

Author】WU Yong1,2*; HE Si-ming1,2; LI Xin-po1,2; Wang Dong-po3

Addresses】1 Key Laboratory of Mountain Hazards and Earth Surface Process, Chinese Academy of Sciences, Chengdu 610041, China; 2 Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China; 3 State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610041, China

Corresponding author】wyhongyu@163.com

Citation】Wu Y, He SM, Li XP, Wang DP (2019) Dynamic response and optimization of an inclined steel rock shed by the graded energy dissipating method. Journal of Mountain Science 16(1). https://doi.org/10.1007/s11629-018-5103-2

DOI】https://doi.org/10.1007/s11629-018-5103-2

Abstract】Blocking rockfalls directly by reinforced concrete (RC) flat sheds with thick sand cushions is an outdated method. Such conventional sheds typically accumulate rock heavily, and become progressively damaged and are difficult to repair, and are very costly. To address these problems, we propose a new structure called a Graded Dissipating Inclined Steel Rock (GDISR) shed that utilizes the graded energy dissipation method. Here, we study the dynamic response of the GDISR shed with model test and numerical simulation, and give its optimization design combining with a practical engineering case. Our results show that the optimized modular E-block and corrugated steel tube can deform to sufficiently absorb the energy of different impact intensities. This efficiently and economically provides GDISR sheds with two security lines. Compared with conventional RC sheds, GDISR sheds with optimal incline have a more efficient anti-impact function, are faster and easier to repair, and are much simpler and cheaper to build.

Keywords】Dynamic response; Optimization design; Graded dissipating; inclined steel rock shed