毕业设计（论文）-基于ANSYS_的FRP加固工字钢梁数值模拟分析精选.doc

摘要 纤维复合材料(FRP)加固补强钢结构技术作为一种新兴的、技术含量高的建筑物加固补强方法，具有很高的研究、推广价值，能够带来巨大的社会经济效益。它是利用树脂类胶结材料将碳纤维材料粘贴十钢材表面，从而达到对结构构件补强加固及改善结构受力性能的目的。碳纤维材料以其轻质、耐腐、高强及施工便利的优点，在结构加固领域得到了广泛应用。同时有限元计算理论的发展成熟，为结构加固补强提供了方便的计算工具，它能够较好模拟结构受力发展的全过程，从而减少试验所需的大量人力、物力，为结构加固设计和施工提供理论保证。 在总结国内外关于FRP加固修复钢结构理论分析和试验研究的基础上，本文对FRP加固修复钢结构的特殊性及关键问题进行了一定的论述，然后通过ANSYS有限元的方法对碳纤维加固钢结构进行了验证，提出了“三维实体一壳元”有限元模型，对采用ANSYS分析的关键技术进行了论述，并采用该模型对受弯钢梁粘贴FRP加固后的性能进行了分析，最后对加固效果的影响因素进行了讨论。 通过研究分析得出了若干结论和建议，对FRP加固修复金属结构技术的发展和完善具有一定的参考价值。 关键词：有限元分析； 纤维增强复合材料； 粘结性能；钢结构 Abstract As a new and high-technique construction reinforcement method for reinforced steel structure, fiber-reinforced plastic (FRP) has many advantages such as high research value and popularizing value, it can bring huge social and economy benefit. The existing reinforced steel structures can be strengthened by adhering carbon fiber-reinforced plastic to the steel surface to improve their mechanical performances. The advantages of CFRP such as lightweight, non-corrosive, high tensile strength and easy construction make it widely used in strengthening field. The maturation of Finite Element Calculation Theory provides a computing tool to the reinforcement method. The finite element method (FEM) can simulate the Non-Linear Full-Range Analysis一the behavior of beams from linear to nonlinear responses and up to failure, it can save lots of human resource and material. Based on the summary of theory analysis and test research on steel structures strengthened with FRP both home and abroad, the key problems of steel structures repaired with FRP have discussed in detail This paper put forward the expressions of the capacity in the composite member with CFRP and steel, which are be validated by the ANSYS methods. The “3D solid-spring-shell finite element model has proposed in the paper, and the key techniques have discussed when the general purpose software.ANSYS has adopted to the bending steel beam members strengthened with FRP. The influencing factors of r