珠海斗门机场北快线下穿高速公路节点方案研究
Research on Node Scheme of Zhuhai Doumen Airport North Express Undercrossing Expressway
徐海俭1
作者信息
- 1. 上海市政工程设计研究总院(集团)有限公司珠海分公司,广东 珠海 519000
- 折叠
摘要
文章以机场北快线下穿西部沿海高速公路节点为例,拟建机场北快线与现状西部沿海高速交叉,西部沿海高速为机场北快线下穿预留桥孔.拟建段地基为软基,该节点如处理不当,路基填筑会对现状桥墩施加侧向力,或工后沉降对桥墩施加负摩阻力.因此,制订合理经济的节点方案尤为重要.文章结合建设条件,提出多种下穿方案,推荐以路基形式下穿现状桥孔,并采用就地固化方式进行软基处理,该方案可为同类项目提供参考.
Abstract
Taking the node of airport north express under-crossing the western coastal expressway as an example,the proposed airport north express intersects with the cur-rent western coastal expressway,and the western coastal expressway reserves bridge holes for the airport north ex-press.The foundation of the proposed section is soft foun-dation.If the node is not handled properly,the subgrade filling will exert lateral force on the current bridge piers,or the post-construction settlement will exert negative friction resistance on bridge piers.Therefore,it is particu-larly important to formulate a reasonable and economical node scheme.Combined with the construction conditions,a variety of undercrossing schemes are proposed.It is rec-ommended to pass through the existing bridge holes in the form of subgrade,and use the in-situ curing method to treat the soft foundation.This scheme can provide refer-ence for similar projects.
关键词
下穿方案/桩板结构/旱桥/软土/就地固化Key words
undercrossing scheme/pile-plate structure/overbridge/soft soil/in-situ curing引用本文复制引用
出版年
2024
NETL
NSTL
万方数据