摘要
沉管隧道接头的力学性能是其安全运营的关键。通过宁波甬江沉管隧道23a的运营期接头沉降的监测数据分析,找出了沉管隧道在软土地基中产生的不均匀沉降与沉管隧道接头各种形变的关系,讨论了甬江沉管隧道在23a运营期间的不均匀沉降的规律。其次,建立GINA止水带的受力模型,计算了由于接头变形导致的GINA止水带受力的问题,并检验了接头止水的安全性。最后,提出了在隧道运营期间,可通过强制位移法利用隧道沉降监测数据对结构进行安全性评估的方法。
The mechanical properties of immersed tunnel joints are the key to their safe operation. By analyzing the monitoring data of joint settlement of Yongjiang immersed tube tunnel in Ningbo for 23 years operation, the relationship between uneven settlement of immersed tube tunnel in soft soil foundation and joint deformation of immersed tube tunnel is found, and the laws and reasons of uneven settlement are analyzed and discussed. The stress model for GINA waterstop is established, the stress of GINA waterstop caused by joint deformation is calculated, and the safety of joint waterstop is checked. Finally, the safety assessment method for the structures by using the settlement monitoring data of the tunnel through the forced displacement method during its operation is put forward.
作者
谢雄耀
易成敏
李伟平
方勇刚
XIE Xiong-yao;YI Cheng-min;LI Wei-ping;FANG Yong-gang(Key Laboratory of Geotechnical and Underground Engineering,Ministry of Education,Tongji University,Shanghai 200092,China;Department of Underground Building Engineering,School of Civil Engineering,Tongji University,Shanghai 200092,China;Institute of Transportation Planning and Design of Zhejiang Province,Hangzhou 310000,China)
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2019年第12期2338-2344,共7页
Chinese Journal of Geotechnical Engineering
基金
国家重点研发计划项目（2018YFC0809600,2018YFC0809601）
关键词
沉管隧道
运营期监测
不均匀沉降
接头变形
安全分析
immersed tube tunnel
operation monitoring
uneven settlement
joint deformation
safety analysis
