Key Technologies for Design of Changqing Yellow River Super-long Bridge of Zhengzhou Ji'nan HSR  

作　　者：ZUO Jiaqiang ZHANG Shang MA Chenlong WANG Zongfeng ZHANG Hai ZHENG Mingda(Translated) 

机构地区：[1]China Railway Design Corporation [2]不详

出　　处：《Chinese Railways》2023年第2期3-11,共9页中国铁路（英文版）

摘　　要：Changqing Yellow River Super-long Bridge of Zhengzhou-Ji'nan HSR is a partial cable-stayed bridge with concrete main girder and a unit length of 1,080 m.Studies are carried out on the key technologies of bridge design,and the main conclusions are as follows:The whole unit adopts the supporting system of tower pier consolidation and tower-beam separation,and each pier is provided with seismic mitigation and isolation bearing;shaped-steel reinforced concrete bridge tower is adopted to bring into full play the tensile performance of steel and the compressive performance of concrete,and avoid the construction challenges of setting up multi-layer and multi-stirrup reinforcement while improving the bearing capacity of section;a new type of double-side and bi-directional anti-skid anchorage device is adopted for the cable saddle of wire divider pipe in order to withstand the unbalanced cable force,and verify the reliability of the anti-skid anchorage device by solid model test;and large-segment cantilever pouring design is adopted for the main girder with a maximum segment length of 8 m to effectively shorten the construction period of the bridge.

关 键 词：Zhengzhou-Ji'nan HSR Changqing Yellow River Super-long Bridge partial cable stayed bridge multi-tower cable-stayed bridge multiple span and long connection bridge design 

分 类 号：U24[交通运输工程—道路与铁道工程]