Key Casting Technology of Main Cable Saddle of Suspension Bridge
Author of the article:ZHEN Yujie;LUO Guolong;HUANG Anming
Author's Workplace：China Construction Third Bureau Group Co.,Ltd.,Northwest Company,Xi'an 710065,China;Deyang Tengen Heavy Industry Co.,Ltd.,Deyang 618099,China
Key Words：space self anchored suspension bridge main cable saddle one saddle and two grooves saddle head casting machining trial assembly
Abstract：In order to overcome the additional stress on the tower caused by the horizontal component force generated by the main cable at the top of the tower,the main cable saddle of the bridge is designed with one saddle and two slots.An integral saddle is adopted,and two symmetrical saddle slots were designed for the main saddle to enhance the carrying capacity of the saddle to the horizontal component force.The shape size of the main cable saddle of the bridge is 7.5 m×5.6 m×4.8 m,the weight of the side span saddle body reaches 126 t,and the weight of the main span saddle is 119 t.The key technologies such as the casting scheme,casting process,machining and trial assembly of the saddle body of the main cable were studied.The difficulties and key points in the casting process were analyzed.By taking the corresponding process control measures,excellent product quality had been obtained.The results show that the main cable saddle of the bridge after casting,all technical indexes meet the design and specification requirements.
