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.
Du Guangyu. Study on Railway Standard Protective Net Protective Performance of Design for the Bridge [ J]. Railway Standard Design,2010(9) ；137 -139, Beijing： Science Press, 2005.
2013, Vol. 30 
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