In the engineering of Passenger Dedicated Line from Beijing to Shijiazhuang

a 5 km long tunnel parallel to the existing Jing-Guang railway line with a distance ranging from 5 m to 20 m was built with open cut method. A testing length supported with pressure dispersed anchor cables was designed and constructed to compared with the commonly used tension concentrated anchor cables on both dynamic response and anchorage effect. Based on data measured for half a year on site

the research on performance and character of these two kinds of anchor cables was made. It is proved that the anti-vibration ability of the pressure dispersed anchor cable is 5 times stronger than the tension concentrated anchor cable. Furthermore

the former has advantages of shorter stress transfer time

stable anti-vitration of long period

less loss of prestress.