Quantitative analysis of large-scale guiding flexible rockfall barriers based on an improved truss equivalent method for steel wire-ring nets postprint

Author: Baoguo Yin ^1,2 Yueping Yin ³ Zhihua Zhang ² Yuntao jin ⁴ Chenyang Zhang ⁵ Luqi Wang ⁶ Xuebing Wang ⁷ Zhiqiang Yi ^2,3
Institute:

1. . Faculty of Engineering, China University of Geosciences , Wuhan 430074, China

2. No. 208 Hydrogeology and Engineering Geology Team of Chongqing Bureau of Geology and Minerals Exploration, Chongqing 400000, China

3. China Institute of Geo-Environment Monitoring, Beijing 100081, China

4. School of Civil Engineering·& Transportation, South China University of Technology, Guangzhou 510641, China

5. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China

6. School of Civil Engineering, Chongqing University, Chongqing, 400045, China

7. Department of Dam Safety and Management, Nanjing Hydraulic Research Institute, Nanjing 210029, China
Submit Time:2025-08-20 12:46:33

Abstract: 高效设计柔性落石引导网需明确了解边坡地形如何影响落石能量衰减与系统荷载，这一任务常因传统模型的计算成本而受阻。为此，本研究首先基于九组准静态及动力试验数据，开发、校准并验证了适用于环网的改进杆系等效本构模型。随后采用验证后的杆系等效方法，针对不同坡角与坡形的落石引导网性能展开系统化数值分析。实验数据验证表明，杆系等效方法具有高精度优势，计算误差始终保持在10%以内。关键突破在于，相较传统圆环梁模型，杆系等效模型的计算效率提升约12倍，成为工程尺度分析的强有力工具。参数化研究揭示：在防护条件下，落石能量衰减率与坡角呈线性负相关。更重要的是，边坡形态被证实为主导因素——阶梯状、凹形及Ⅱ类复合型边坡虽能发挥落石引导网的高效防护性能，但后两种地形会在系统中产生最大结构荷载。本研究成果确立了等效杆系模型作为分析落石引导网的稳健高效工具地位，通过定量关联防护网性能、结构需求与特定地形条件，为优化防护系统设计提供了关键理论框架与实践方法。

落石防护杆系等效模型引导网计算效率落石能量衰减率系统响应

Subject: Engineering and technical science >> Engineering Geology
Meeting: Rock Mechanics Bulletin
Contribution： Meeting Submitted
Cite as: ChinaXiv:202508.00260 (or this version ChinaXiv:202508.00260V1)
DOI:10.12074/202508.00260
CSTR:32003.36.ChinaXiv.202508.00260
Recommended references： 殷保国,殷跃平,张枝华,金云涛,张晨阳,王鲁琦,王雪冰,易志强.基于改进杆系等效方法的钢丝绳环网大型落石引导网定量分析.中国科学院科技论文预发布平台.[DOI:10.12074/202508.00260] (Click&Copy)

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2025-08-20 12:46:33

ChinaXiv:202508.00260V1

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