落石冲击作用下被动柔性防护网整体结构试验  

Experimental study on the passive flexible protection under the rock-fall impact

作　　者：刘成清[1] 陈林雅 陈驰[1] 韦韬[1] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031

出　　处：《中国地质灾害与防治学报》2014年第4期37-44,共8页The Chinese Journal of Geological Hazard and Control

基　　金：国家自然科学基金(51278428);中央高校基本科研业务费专项资金资助项目(2682014CX066)

摘　　要：针对被动柔性防护网受力系统,介绍了被动柔性防护网在国内外的应用和研究现状,阐明了被动柔性防护网的构成和传力机理,揭示其抵抗落石冲击的基本原理。为分析被动柔性防护网整体受力机理和响应特点,进行了在落石作用下被动柔性防护网足尺模型的冲击试验,分析了被动柔性防护网受到冲击之后的整体变形以及减压环、钢柱等关键构件的耗能及其破坏机理,为被动柔性防护网的结构计算分析与设计提供一定的参考依据。In order to study the passive flexible protection, the application and research status of passive flexible protection at home and abroad were presented, in order to reveal the basic principle of rock-fall impact resistance of the passive flexible protection, the structure and force transfer mechanism were clarified. For the analysis of passive flexible protective stress response mechanism and characteristics, two full-scale model impact tests were carried out, the whole deformation were studied, as well as the energy dissipation and failure mechanism of the ring-break energy dissipater, steel columns and other key component. The conclusion can provide a reference for the computational analysis and structural design of the passive flexible protection.

关 键 词：被动柔性防护网 耗能机理 试验系统 落石冲击 

分 类 号：P694[天文地球—地质学]