一座桥梁按设计要求竣工后,一切都满意,但是等到两条钢轨一铺,则发现其美中不足之处是在桥台与路基联接处道碴自台尾纵向滑向锥体护坡,桥头道碴很难保持稳定,行人走来走去把道碴踏得乱七八糟,致使线路养护人员很伤脑筋。为了解决这个问题,人们采取了许多办法:如在桥台人行道板下伸进桥台尾 After a bridge was completed according to the design requirements, everything was satisfactory. However, until the two rails were paved, the drawbacks were found to be that the ballast at the abutment abutment and subgrade abutment longitudinally slides towards the cone slope and the ballast at the bridge abutment Difficult to maintain stability, pedestrians walking around to mess up the ballast, causing line maintenance staff is very headache. In order to solve this problem, people have taken many measures: If the bridge abutment under the bridge into the tail