Comparative Investigations on Internal Force Distribution Characteristics on Concrete Segments in Qiongzhou Strait Sub-Sea Tunnel

2018 5th International Conference on Advanced Engineering and Technology

工业技术（总论）

Wang, Zhiyuan^1 ; Li, Shouju^2 ; Guo, Kai^2

College of Ocean and Civil Engineering, Dalian Ocean University, Dalian

116023, China^1

State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian

116024, China^2

关键词: ANSYS software;    Beam-spring model;    Concrete segments;    Equivalent stiffness;    Internal force distributions;    Internal forces;    Maximum bending moments;    Qiongzhou strait;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/507/1/012002/pdf
DOI  :  10.1088/1757-899X/507/1/012002

学科分类：工业工程学

来源: IOP

【 摘 要 】

In the design of shield tunnel concrete segments, the calculation of internal forces on segment sections is an important part. In order to study the influence of combining calculation of water and soil pressure and separate calculation of water and soil pressure towards internal forces on segment sections, taking the Qiongzhou Strait sub-sea tunnel as the background, ANSYS software is used to establish the equivalent stiffness circle model, hinged model and beam spring model, and the internal forces on segment are calculated by two methods of combining calculation of water and soil pressure and separate calculation of water and soil pressure. The results show that the difference of the bending moment between the two methods is great while the difference of the axial force is small, the maximum bending moment of combining calculation of water and soil pressure is 2.2∼2.9 times larger than that of separate calculation of water and soil pressure, and the axial force is 11%∼16% larger than separate calculation of water and soil pressure.