Mechanical model and analytical solution for stiffness in the joints of an immersed-tube tunnel

被引：0

作者：

Yu, Hai-Tao ^{[1
,2
]}

Yuan, Yong ^{[3
]}

Liu, Hong-Zhou ^{[4
]}

Li, Zhen-Xin ^{[4
]}

机构：

[1] Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China

[2] Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200030, China

[3] Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China

[4] CCCC Highway Consultants CO., Ltd, Beijing 100088, China

来源：

Gongcheng Lixue/Engineering Mechanics | 2014年 / 31卷 / 06期

关键词：

Closed form solutions - Deformation compatibility - Design characteristics - Immersed tunnels - Joint stiffness - Material parameter - Mechanical model - Stress equilibrium;

D O I：

10.6052/j.issn.1000-4750.2012.012.0987

中图分类号：

学科分类号：

摘要：

Stiffness is one of the most important parameters in representing the performance of joints of an immersed tunnel. At present, neither analytical solutions nor experimental data are available to study joint stiffness in immersed tunnels. A mechanical model for element joints is proposed with assumptions based on the design characteristics of immersed joints, in which springs are assumed to model behaviors of GINA rubber and non-deformable rigid plates are assumed for segments. An analytical solution for joint stiffness is derived according to equations of stress equilibrium and deformation compatibility. A benchmark model, a three-dimensional refined model of an immersed joint, is used to calibrate the presented model and the derived closed-form solution for joint stiffness. Comparison under the same geometrical and material parameters shows a high degree of consistency between the two, which verifies both the presented model and analytical solution. Finally sensitivity analyses of parameters for joints are carried out using the proposed model, and potential influences of parameters on joint stiffness are predicted.

引用

页码：145 / 150