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在隧道施工中由于受到种种条件的限制,易导致隧道衬砌配筋率不足,尤其是在风机悬挂段。文中以某隧道风机悬挂段二衬配筋不足为例,运用ANSYS建立了风机悬挂段的三维数值计算模型,运用荷载结构法,详细分析了风机悬挂段衬砌结构受力特征,并给出了相应补强后结构的受力特性。通过分析和方案比选优化,提出了适用于隧道风机悬挂段的环状钢板补强方案,并通过现场实施,确保了风机悬挂段结构安全。
In the tunnel construction due to a variety of conditions, can easily lead to inadequate ratio of tunnel lining reinforcement, especially in the fan suspension section. In this paper, a tunnel fan suspension section of the second lining reinforcement as an example, the use of ANSYS to establish a three-dimensional numerical model of the fan suspension section, the use of load structure method, a detailed analysis of the fan suspension section lining structure stress characteristics, and gives the corresponding After strengthening the structure of the force characteristics. Through the analysis and optimization of the scheme, a ring steel reinforcement scheme applied to the suspension section of the tunnel fan was put forward and the structural safety of the fan suspension section was ensured through on-site implementation.