大连湾海底隧道北岸防撞结构研究  

Anti-collision structure on the north shore of Dalian Bay immersed tunnel

作　　者：王涛 高凌霄 孙宇辰 马志强 尹永欣 WANG Tao;GAO Ling-xiao;SUN Yu-chen;MA Zhi-qiang;YIN Yong-xin(Dalian Branch Company of CCCC Tianjin Port Engineering Design&Consulting Co.,Ltd.,Dalian,Liaoning 116001,China)

机构地区：[1]中交天津港湾工程设计院有限公司大连分公司,辽宁大连116001

出　　处：《中国港湾建设》2024年第4期54-58,共5页China Harbour Engineering

基　　金：2021年度交通运输行业重点科技项目(2021—MS1-052)。

摘　　要：大连湾海底隧道北岸高于原海床面K0+785—K0+988段易受船撞风险影响,需要采取防撞措施,结合施工难易程度、环保、造价等因素,在满足工期要求的前提下,提出了一种由没顶圆沉箱、立柱桩和现浇墩台组成的透水式重力墩基础作为防撞结构。并结合防撞墩的结构形式、主要荷载,用有限元法和规范法对防撞墩结构的整体稳定性、立柱桩的承载能力进行分析计算。结果表明该透水式重力墩防撞结构各方面均可满足工程使用要求,可为今后类似结构的施工提供设计参考。The section K0+785-K0+988 on the north shore of the Dalian Bay immersed tunnel,which is higher than the original seabed surface,is susceptible to ship collision risks and requires anti-collision measures.Taking into account factors such as construction difficulty,environmental protection,and cost,a permeable gravity pier foundation composed of circular caissons,column piles,and cast-in-place piers was proposed as the anti-collision structure,while meeting the requirements of the construction period.Combined with the structural form and main loads of the anti-collision pier,the overall stability of the anti-collision pier structure and the bearing capacity of the column piles were analyzed and calculated using finite element method and specification method.The results show that the permeable gravity pier anti-collision structure can meet the requirements of engineering use in all aspects,and can provide design reference for the construction of similar structures in the future.

关 键 词：圆沉箱 立柱桩 防撞墩 稳定性 承载能力 

分 类 号：U652.73[交通运输工程—港口、海岸及近海工程]