隧道工程结构设计中的有限元分析.docVIP

PAGE 7 PAGE 7 隧道工程结构设计中的有限元分析 ////// （安徽理工大学，安徽 淮南232001） 摘 要：有限元技术作为一种应用广泛的科学计算方法，已经成为解决复杂工程实际问题的重要手段，尽管隧道的洞型和施工工序均较为复杂，应用有限元分析仍不失为一种十分理想的方法。采用有限元分析软件ANSYS14.5对隧道的受力情况作了静态的受力分析。通过分析和计算,得出隧道的应力和应变的分布情况,为隧道的结构设计提供了理论依据,同时也展示了有限元分析应用于工程设计应力计算的方法,有一定的工程实用价值。 有限元核心思想是结构离散化，即将实际结构假想地离散为有限数目的规则单元组合体，实际结构的物理性能可以通过对离散体进行分析，得出满足工程精度的近似结果来替代对实际结构的分析，这样可以解决很多实际工程需要解决而理论分析又无法解决的复杂问题。 关键词： 隧道；应变分布图；应力分布图； 有限元分析 The Finite Element Analysis in The Design of Tunnel Structure ////////// (Anhui University Of Science Technology,Anhui Huainan,232001) Abstract:The finite element technique as one of the widely used scientific methods of calculation,has become an important mean of solving the engineering problems.Although the hole type and construction process of the tunnel are more complex than before, the application of the finite element analysis is an ideal method. Using the finite element analysis software ANSYS14.5,the stress state of the tunnel shows itself.Through the analysis and calculation of the tunnel, the stress and strain distribution of the tunnel has been acquired,which provides a theoretical basis for structure design of tunnel.At the same time, the method of applying the finite element analysis,which is used to do the engineering design and calculation of stress, has its practical engineering value. The core idea of the finite element analysis is the discretization of structure,which means that hypothetically the actual structure is discretized into a finite number of rules of unit combination and can be based on the discrete analysis on the physical properties of the actual structure.Through that we can acquire the result of approximation precision engineering to substitute actual structure analysis.It can solve a lot of practical engineering complex problems which the theoretical analysis is unable to solve . Key words: Tunnel Project;Strain distribution;Stress distribution;The finite element analysis 国内外研究现状 国际早在20世纪5