Calculation Method and Its Application of Counterforted Rock-Fall Barrier 
of Dangerous Rock Zone

doi:10.3969/j.issn.1674-0696.2017.06.09

Abstract

Abstract: The disaster prevention of dangerous rock in mountainous road is an important problem to ensure the road construction and traffic safety in mountainous areas.Rock-fall barrier is a flexible protection system used in the treatmemnt of dangerous rock zone in mountainous roads in recent years，but there is the lack of a complete calculation method of control engineering.The calculation model of counterforted rock-fall barrier was generalized as the dangerous rock instability only caused pulling force of four anchors in a mesh.Based on the eccentric tension model and system equivalent macro mechanism，the calculation method of the counterforted rock-fall barrier was derived and the tension calculation formula of the counterforted rock-fall barrier anchor was also obtained in the proposed model.The engineering practicability of the proposed calculation method was verified by the case study of crag W26 of Shouli Mountain in Wanzhou，Chongqing.

Key words: highway engineering, dangerous rock zone, counterforted rock-fall barrier, design method and application

摘要： 山区道路危岩减灾成为保障山区道路工程建设和山区交通安全的重要问题。拦石网是近年来应用于山区公路危岩带治理的柔性防护系统，但缺乏完备的治理工程计算方法。将扶壁式拦石网的计算模型概化为失稳危岩只引起一个网格的4根锚杆产生拉力。基于偏心拉伸模型和系统宏观等效机制推导扶壁式拦石网计算方法，获得扶壁式拦石网锚杆在该模型下拉力计算公式。选取重庆万州首立山危岩W26进行工程算例分析，验证该计算方法的工程实用性。

关键词: 道路工程, 危岩带, 扶壁式拦石网, 设计方法及应用

CLC Number:

U416.02

CHEN Hongkai，QIN Xin，TANG Hongmei. Calculation Method and Its Application of Counterforted Rock-Fall Barrier of Dangerous Rock Zone[J]. Journal of Chongqing Jiaotong University(Natural Science), 2017, 36(6): 58-63.

陈洪凯，秦鑫，唐红梅. 危岩带扶壁式拦石网计算方法及应用[J]. 重庆交通大学学报（自然科学版）, 2017, 36(6): 58-63.

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Calculation Method and Its Application of Counterforted Rock-Fall Barrier of Dangerous Rock Zone

危岩带扶壁式拦石网计算方法及应用

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