Mechanical effects analysis of inverted arch

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Fang, Yueduo^1 ; Ding, Kewei^2

Anhui Electric Power Transmission and Transformation Co. Ltd., Hefei, China^1

Civil Engineering School, Anhui Jianzhu University, Heifei, China^2

关键词: Expansive soils;    Finite element analysis software;    Lining structure;    Mechanical effects;    Surrounding rock;    Tunnel surrounding rock;    Vertical displacements;    Vertical stress;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/3/032026/pdf
DOI  :  10.1088/1757-899X/490/3/032026

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In order to study the mechanical effect of the inverted arch of the expansive soil layer, Midas, one kind of finite element analysis software, was used to simulate the support forms of the two tunnels, the vertical displacement, the vertical stress, the shear stress, the distribution of the plastic zone of tunnel surrounding rock and the stress of the lining are compared and analyzed. The results show that the integrity of inverted arch tunnel is relatively good, which can effectively restrain the bottom deformation, reduce the compressive stress at the arch shoulder and arch foot, and control The plastic zone of the surrounding rock, and can better improve the overall mechanical property of the lining structure, and by analyzing the best inverted arch radius to find the most reasonable radius value.