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

作　　者：WU Yong HE Si-ming LI Xin-po Wang Dong-po 

机构地区：[1]Key Laboratory of Mountain Hazards and Earth Surface Process, Chinese Academy of Sciences [2]Institute of Mountain Hazards and Environment, Chinese Academy of Sciences [3]State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology

出　　处：《Journal of Mountain Science》2019年第1期138-152,共15页山地科学学报（英文）

基　　金：supported by the National Key Basic Research Program of China(2016YFB0201003);the National Natural Science Foundation of China(41672356);the 135 Strategic Program of the Institute of Mountain Hazards and Environment,CAS(SDS-135-1704)

摘　　要：Blocking rockfalls directly by reinforced concrete(RC) flat sheds with thick sand cushions is an outdated method.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and cheaper to build.Blocking rockfalls directly by reinforced concrete(RC) flat sheds with thick sand cushions is an outdated method.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.

关 键 词：Dynamic RESPONSE Optimization design GRADED dissipating inclined STEEL ROCK SHED 

分 类 号：P[天文地球]