四渡河特大桥主缆锚固系统锚垫板优化设计

Optimized-design of Anchor Padding Plate of Anchorage System of the Main Cable of Siduhe Bridge

四渡河特大桥是沪蓉国道主干线湖北宜昌至恩施高速公路的关键控制性工程之一,也是目前国内在建的难度最大的山区悬索桥之一。通过对该桥锚碇预应力锚固系统锚垫板几种方案的有限元分析,总结出影响大吨位锚垫板传力锚固效果的主要因素及其影响趋势,最终确定最优的设计方案。

Siduhe Bridge is the critical project of Hurong National trunk road in Hubei ,and it＇s also one of the most difficult suspension bridges in building in mountainous region in China.Through the finite element analysis of different schemes of the anchor padding plate of prestressing anchorage system,the paper summarized key factors and the influence trend of the anchoring effect of the large size anchor padding plate.Based on these,the best design scheme was proposed.