【摘要】 采用三维有限元模型 ,对混凝土拱涵进行温度场、收缩应力和温度应力分析。得出了混凝土收缩、高温季节日照以及铺涂沥青施工产生的温度应力分布和大小。结果表明 ,这类应力可能是工程中某些拱涵开裂的原因 ,值得充分重视。更多还原

【Abstract】 This paper analyzes the temperature field, the contraction stress, and the thermal stress in concrete arch culverts using Finite Element Method. The distribution and magnitude of stresses caused by concrete contraction, sunshine in hot climate, and asphalt coating were obtained. The results show that these stresses may lead to cracking of culvert in engineering practice.更多还原