港口航道与近海工程2025，Vol.62Issue(2)：78-83,6.DOI:10.16403/j.cnki.ggjs20250217
阿蓬江特大桥14号墩基坑围堰设计及分析
Design and Analysis of Cofferdam for Foundation Pit of Abutment No.14 of Apongjiang Bridge
袁伟明 1江洪林1
作者信息
- 1. 中交第三航务工程局有限公司,上海 200032
- 折叠
摘要
Abstract
Apenjiang Bridge of Qian-Zhang-Chang Railway is one of the highest concrete cable-stayed bridges with low towers along the railways in China.The main abutment is 123.5 m high,the foundation pit of the abutment No.14 is near the road and river,which leads to the complexity of hydrology and geology.By comparing the foundation pit retaining structures and the inner supports,a double support system was determined,that is,the occlusion pile combined with the prestressed fish belly beam and prestressed anchor cable.The structure is of less deformation and better water-stop performance.In view of the imbalance forces acting on both sides of the foundation pit,different pre-stresses could be selected to realize the dynamic control of the overall deep-layer displacement of the retaining structure.Midas was used for the overall modeling and calculation of the supporting system,which produced the deformation,the support axial force and the maximum value of the bending moment.The monitoring data showed that the double-layer support system applied well.关键词
临路傍水/预应力鱼腹梁/预应力锚索/咬合桩/建模/监测Key words
close to road and river/prestressed fish-belly beam/prestressed anchor cable/occlusion pile/modeling/monitoring分类
交通工程引用本文复制引用
袁伟明,江洪林..阿蓬江特大桥14号墩基坑围堰设计及分析[J].港口航道与近海工程,2025,62(2):78-83,6.
