铁道标准设计2016，Vol.60Issue(7)：24-29,6.DOI:10.13238/j.issn.1004-2954.2016.07.006
被动柔性防护网结构足尺冲击试验研究
Full Scale Experimental Testing of Flexible Rockfall Protective Structures
摘要
Abstract
In order to study the performance of flexible rockfall protective structure, two flexible protective structures of 750 kJ protective level are designed for full scale impact test. Model 1 is obtained in accordance with the existing standard;model 2 is the improved system. The test results show that: model 1 failed to intercept 750kJ rockfall impact and the system clasped;model 2 successfully intercepted rockfall, and all the major components remained complete with only consumables to be replaced for continuous service. Through the replay of high-speed video, the movement and stress of each part of the members are analyzed, the performances of a three-stage process of the system are identified, and key factors of system failure are analyzed. Meanwhile, the measured tension force of the steel wire in time-history is compared and anlyzed. The research results provide a theoretical basis for the future design of flexible rockfall protective structure.关键词
柔性被动防护网结构/落石冲击/整体试验/运动特征Key words
Flexible protective structure/Rockfall/Full scale test/Movement characteristics分类
交通工程引用本文复制引用
齐欣,余志祥,许浒,赵雅娜,赵世春..被动柔性防护网结构足尺冲击试验研究[J].铁道标准设计,2016,60(7):24-29,6.基金项目
国家自然科学基金(51408498) （51408498）
高校博士点科研基金(20130184110009、20130184120002) （20130184110009、20130184120002）
桥梁结构安全技术国家工程实验室开放基金(310821151102)。 （310821151102）
