【摘要】 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 .更多还原

【Abstract】 Temperature field and heat conductivity on double T bridge of carbon/aramid fiber reinforced concrete is analyzed by means of the boundary element method.Study on the 2 D steady temperature field by fictitious thenmal source method is given.According to the numerical discrete character of boundary element method,quadratic inbarmonical element may be used for efficiently solving the problem of corner region and indetermination of normal direction of boundary point in numerical process.Numerical results of examples given here show high precision of present method.更多还原