Wei Maojie, Fan Peijun, Liao Zhanqiang, Jia Li

£¨Shandong Yellow River Reconnaissance Design & Research Institute£©

Abstract£ºThis paper, obtained from the analyses of the Entrance bar¡¯s grain composition based on the detailed analyses of the Dynamic performance, showed that the Entrance bar is easy to lose strength by the dynamic load, and then liquefies. According to this characteristic, proposed exerts using the manual interference of the Dynamic performance, causes preliminary idea which the Entrance bar¡¯s ridge goes against highly reduces.

Key words: Entrance bar; Dynamic performance; Dynamic load; Strength