分离式被动防护网整治山体危石应用研究

申文军,刘成林,刘昌宏,李晓杰

铁道工程学报 ›› 2013, Vol. 30 ›› Issue (5) : 31-34.

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铁道工程学报 ›› 2013, Vol. 30 ›› Issue (5) : 31-34.
线路与轨道

分离式被动防护网整治山体危石应用研究

  • 申文军1,刘成林2,刘昌宏3,李晓杰1
作者信息 +

Research on Application of Separated Passive Protective Screen in Controlling Mountain Dangerous Rock

  • SHEN Wen - jun1, LIU Cheng - Iin2, LIU Chang - hong3, LI Xiao - jie4
Author information +
文章历史 +

摘要

研究目的:传统被动防护系统上下支撑绳与钢柱采用绑扎连接,结构形式、系统受力不尽合理,冲击力传导性能差,落石冲击时应力集力,钢柱容易发生弯曲变形,使防护效果大打折扣。分离式被动防护网,克服了传统被动防护网的缺点,在山体危石防护上得到良好的应用。
研究结论:计算和试验结果表明,分离式被动防护网通过上下支撑绳与钢柱的特殊连接设计,使整片护网与钢柱分离,系统各构件受力更加均衡合理,在拦截落石时,钢丝绳可以自由滑动,减少应力集中,使钢柱受力减小,冲击力传导性更好,既提高了系统的防护能力,保证了防护效果,也节约了防护造价,减少了后期维护,确保了行车安全。研究成果可应用于铁路边坡防护工程。

Abstract

Research purposes: The top and bottom supporting ropes of the traditional passive protection systems are connected to the steel column by binding, and its guarding effect is not perfect because the structural style and load bearing of the system are unreasonable, the system’s transmission property of the impact force is poor, the stress is concentrated easily when it is impacted by the falling rock and the steel column is easily bended and deformed. The separated passive protective screen overcomes the shortcomings of the traditional passive protective system and it has good protection property against the mountain dangerous rock.
Research conclusions: The calculation and test results show that The various members of the separated passive protective screen can bear the load more evenly and reasonably because the screen is separated with the steel column due to the special design of the supporting ropes connection with the steel column. When holding up the falling rocks, the steel ropes can move freely. In this way, the stress concentration can be reduced, the impact force on the steel column can be cut, the transmission property of the impact force can be enhanced, the protective property can be improved, the cost can be saved and the maintenance works can be reduced. This method can be widely used in protective works for the railway slope.

关键词

柔性防护 / 落石运动 / 受力形式 / 冲击试验

Key words

soft protection / rockfall movement / load bearing style / impact experiment

引用本文

导出引用
申文军, 刘成林, 刘昌宏, . 分离式被动防护网整治山体危石应用研究[J]. 铁道工程学报, 2013, 30(5): 31-34
SHEN Wen - jun, LIU Cheng - Iin, LIU Chang - hong, et al. Research on Application of Separated Passive Protective Screen in Controlling Mountain Dangerous Rock[J]. Journal of Railway Engineering Society, 2013, 30(5): 31-34
中图分类号: U216.41 +5   

参考文献

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