大直径钢波纹管力学特性及参数分析
Analysis on Mechanical Properties and Parameters of Large-Sized Corrugated Steel Pipe

为研究综合管廊中大直径钢波纹管的力学特性，利用ANSYS软件建立钢波纹管结构的三维有限元模型。针对壁厚、土体弹性模量等主要设计参数进行数值分析，找出钢波纹管的薄弱区域，探究其受力性能与规律。研究发现：钢波纹管的最大等效应力出现在管体左、右两侧的波谷处；而管外围土体的最大等效应力则出现在波纹管外侧左上、右上、左下、右下45？方向上的圆环中部；并且壁厚和管周土体弹模均对钢波纹管的力学性能有着显著影响。
In order to study the mechanical properties of large-sized corrugated steel pipe, a 3D FE structural model was established by ANSYS software. Then, the main design parameters of corrugated pipe were analyzed to study its force and deformation characteristics under the influence of various factors. The results show that the maximum equivalent stress of the corrugated steel pipe appears at the troughs of the left and right sides of the pipe. And the maximum equivalent stress of the outer soil occurs in the middle of the upper left, upper right, lower left, lower right along 45？ di-rections. Moreover, the thickness and the soil elastic modulus both have significant effects on the mechanical properties of steel pipe.