Structural Health Monitoring Materials Research Forum LLC Materials Research Proceedings 18 (2021) 294-301 https://doi.org/10.21741/9781644901311-36 Innovation and Practice of Cable-Pylon Anchorage Zone Using Group Aggregated Anchor System Yonggao Yin1,a, Qian Li2,a,*, Jiangguo Lv1,b, Zhu Yu1,c 1Anhui Transportation Holding Group Co., Ltd, Hefei, China 2 Research Institute of Highway Ministry of Transport, Beijing, China a
[email protected],b
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[email protected] Keywords: Cable-Stayed Bridge, Cable-Pylon Anchorage Zone, Group Aggregated Anchor System, Structure, Construction Abstract: With the development of the cable-stayed bridge, the anchorage form on pylon of cable-stayed has been improved and innovated continuously, and the anchorage methods such as circumferential prestressed anchorage, steel anchor beam and steel anchor box have been gradually formed and developed, which further increases the span of cable-stayed bridge and meets the social needs of economic development and environmental integration. The group aggregated anchorage system between cable and pylon is a kind of anchorage form outside the pylon, which has the characteristics of clear force transmission, simple structure and high construction efficiency. It has been successfully applied in Chizhou Yangtze River Bridge for the first time. The main span of Chizhou Yangtze River Bridge is 828m, and the cable-stayed bridge with spatial cable plane of two towers is constructed. Six steel beams are deployed between tower legs to anchor 54 pairs of cables respectively. The steel beams and the concrete tower columns are effectively connected by prestressed anchors, shear nails and short steel bars, which could transfer the cable force to the tower column reliably.