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用边界元法分析了碳 /芳纶纤维增强混凝土双T形桥梁的温度场及热传导状况 .以二维无限域内单位强度点热源作用的温度场为基本解 ,用虚拟热源法求解梁结构在温度荷载下的稳态温度场 .由于边界元法的数值离散特性 ,应用二次非协调单元简便可行地解决了数值计算中的角域问题和边界点法向取值不确定问题 .算例表明本文方法具有较高的精度 .
The boundary element method is used to analyze the temperature field and heat conduction of carbon / aramid fiber reinforced double-T-bridge.The temperature field with unit intensity point heat source in two-dimensional infinite field is taken as the basic solution, and the virtual heat source method is used to solve the temperature field Due to the numerical discretization of the boundary element method, the problem of angular domain in the numerical calculation and the uncertainty of the normal value of the boundary point are solved conveniently and conveniently by using the quadratic nonconforming element. The method has high precision.