摘要
对包括水平线形、管节刚度、接头刚度、缆索刚度、基础沉降以及缆索失效等悬浮隧道纵向结构相关工程参数开展研究,并对部分参数进行敏感性分析。发现:悬浮隧道水平曲率半径应综合考虑管体挠度、弯矩和扭转并结合规范进行取值;管节刚度与缆索刚度对隧道体系的影响存在此消彼长的关系,接头刚度的影响与管节刚度相同;近岸缆索沉降及单根竖缆沉降为较不利沉降工况;跨中缆索失效引起的挠度增量较大。
In this paper,we conducted studies on the relevant engineering parameters of submerged floating tunnel longitudinal structure,including plane alignment,tube stiffness,joint stiffness,cable stiffness,foundation settlement and cable failure,and carried out sensitivity analysis of some parameters.It is found that the plane curvature radius of submerged floating tunnel should take into account the deflection,bending moment and torsion of the tunnel tube and take values in combination with the code.The influence of tube stiffness and cable stiffness on tunnel system has a reciprocal relationship.The influence of joint stiffness is the same as that of tube stiffness.Offshore cable settlement and single vertical cable settlement are unfavorable settlement conditions.Deflection increment caused by mid-span cable failure is large.
作者
刘凌锋
刘晓东
林巍
刘傲祥
魏佳奇
LIU Ling-feng;LIU Xiao-dong;LIN Wei;LIU Ao-xiang;WEI Jia-qi(CCCC SFT Structural and Design Methodology Research Technical Tackling Team,Zhuhai,Guangdong 519000,China;CCCC Highway Consultants Co.,Ltd.,Beijing 100088,China;Dalian University of Technology,Dalian,Liaoning 116024,China)
出处
《中国港湾建设》
2020年第2期118-122,共5页
China Harbour Engineering
关键词
悬浮隧道
水平线形
刚度
基础沉降
缆索失效
工程规律
敏感性分析
submerged floating tunnel
plane alignment
stiffness
foundation settlement
cable failure
engineering law
sensitivity analysis
作者简介
刘凌锋(1990—),男,福建龙岩人,工程师,从事沉管隧道、悬浮隧道设计及科研工作。E-mail:fjllfck@126.com。
