基于多种方法的单箱双室箱梁温度应力计算研究

Temperature Stress Calculation of Single Box Double Chamber Girder Based on Several Methods

为了研究单箱双室箱梁结构在温度作用下的应力,运用规范的温度应力计算法、考虑空间整体效应的温度应力计算法和有限元计算法,分别计算箱梁的温度应力,并对计算结果进行对比分析.结果表明,对于单箱双室箱梁,规范法计算的温度应力结果偏小,而有限元法和考虑空间整体效应的温度应力计算法得到的结果比较接近,更加符合实际应力情况.

For purpose of studying stress in box girder with single box double chamber,normalized calculation method,method of focusing on whole body,finite element method are respectively used to calculate stress. The results show that the stress got through focusing on whole body is too small for box girder with single box,double chamber; the stress got through finite element method is more suitable for real situation.