沉管隧道干坞工程基床系数计算  

Calculation of the coefficient of subgrade reaction in dry dock project of immersed tube tunnel

作　　者：申立明 胡建波 SHEN Li-ming;HU Jian-bo(CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300461,China;CCCC Tianjin Port Engineering Design and Consulting Co.,Ltd.,Tianjin 300461,China;Tianjin Key Laboratory of Construction,Operation and Maintenance Technologies for Underwater Tunnels,Tianjin 300461,China)

机构地区：[1]中交第一航务工程局有限公司,天津300461 [2]中交天津港湾工程设计院有限公司,天津300461 [3]天津市水下隧道建设与运维技术企业重点实验室,天津300461

出　　处：《中国港湾建设》2021年第11期7-10,共4页China Harbour Engineering

摘　　要：大连湾海底隧道建设工程中的干坞工程,承担着海底隧道沉管的预制工作。坞底主要包含预制台座、轨道梁、底板等建构筑物,坞底结构形式为弹性地基梁、板,地基为中风化白云岩。通过基床系数计算公式(坞底开挖前)和坞底基床系数试验(坞底开挖后),合理选用基床系数,从而优化底板设计,达到节省工程费用的目的,同时为今后类似工程项目提供设计依据。In the Dalian Bay subsea tunnel project,dry dock project undertakes the prefabrication of immersed tube in the subsea tunnel.The dock bottom mainly includes precasted pedestal,track beam,baseplate and so on.The structure style of dock bottom is elastic foundation beam and baseplate,and the foundation is moderately weathered dolomite.Through the calculation formulas(before the dry dock excavation)and test on the coefficient of subgrade reaction(after the dry dock excavation),the coefficient of subgrade reaction was reasonably selected,so as to optimize the baseplate design,achieve the purpose of saving construction costs and provide design basis for similar engineering projects in the future.

关 键 词：弹性地基板 基床系数 中风化白云岩 载荷试验 

分 类 号：U652.74[交通运输工程—港口、海岸及近海工程]