Analytical Computational Models for Relationship between Ultimate Bending Moment of Concrete Segments and Axial Force

Abstract:

Concrete segments are widely used to support soil and water loadings in shield-excavated tunnels. Concrete segments burden simultaneously to the loadings of bending moments and axial forces. Based on plane deformation assumption of material mechanics, in which plane section before bending remains plane after bending, ultimate bending moment model is proposed to compute ultimate bearing capacity of concrete segments. Ultimate bending moments of concrete segments computed by analytical models agree well with numerical simulation results by FEM. The accuracy of proposed analytical computational model for ultimate bending moment of concrete segments is numerically verified. The analytical computational model and numerical simulation for a practical engineering case indicate that the ultimate bending moment of concrete segments increases with increase of axial force on concrete segment in the case of large eccentricity compressive state.

• Periodical: Key Engineering Materials (Volume 853)
• Pages: 177-181
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.853.177
• Online since: July 2020
• Authors: Zhi Yun Wang*, Shou Ju Li
• Keywords: Axial Force, Bending Moment, Concrete Segments, Numerical Simulation, Plane Deformation Assumption, Ultimate Bearing Capacity

References

[1] A. Oriol, M. Climent: Engineering Structures. Vol. 44(2012), p.210.

[2] M Yu , EL Yao and B Ruan: Tunnelling and Underground Space Technology. Vol. 77 (2018), p.216.

[3] F Ye, CF Gou, HD Sun, et al: Tunnelling and Underground Space Technology. Vol. 41(2014), p.193.

[4] G. Abate, M. R. Massimino: Bull Earthquake Eng. Vol. 15,1(2017), p.443.

[5] Y Cao, PY Wang, XL Jin, et al: Tunnelling and Underground Space Technology. Vol. 28(2012), p.124.

[6] G. Abate, M.R. Massimino: Bulletin of Earthquake Engineering. Vol. 15,1(2017), p.469.