基于有限元模拟盾构隧道管片加载的研究综述

A SUMMARY OF RESEARCH ON SHIELD TUNNEL SEGMENT LOADING BASED ON FINITE ELEMENT METHOD

运营期间地铁盾构隧道受到各种复杂因素影响,容易导致管片破损和开裂,影响隧道的正常运营。采用有限元模拟盾构隧道衬砌受力与变形是一种常见的研究方法。对国内外采用有限元模拟盾构隧道管片的研究现状进行了阐述,根据研究方法将其分为地层-结构模型法(二维和三维计算模型)和荷载-结构模型法(多铰圆环法、梁-弹簧模型法、壳-弹簧模型法和三维实体精细化模型法)两大类,对研究进展进行了综述,指出目前研究存在的不足并作进一步的展望。

During the operation period, the subway shield tunnel is affected by various complex factors, which can easily lead to segment breakage and cracking, and affect the normal operation of the tunnel. It is a common research method to simulate the stress and deformation of shield tunnel lining by finite element method. The research status of finite element simulation shield tunnel segment at home and abroad is described. According to the research methods, it is divided into two categories: stratum -structure model method (two-dimensional and three-dimensional calculation model) and load-structure model method (multi-hinged ring method, beam-spring model method, shell-spring model method and three-dimensional solid fine model method). The research progress is reviewed, and the shortcomings of the current research are pointed out and further prospects are made.