【摘要】 本文首先根据热传导方程,推导了日照作用下壁面温差的近似解,然后给出了屋面板在各种边界条件下的弯矩计算公式和用表。通过现有文献的数值算例,将四边简支和四边固定矩形钢筋混凝土屋面板的计算结果与有限元结果进行对比,证明了本文结论的正确性;同时通过将本文结论应用于具体工程,证明了本文结论的实用可靠性,从而为以后的钢筋混凝土屋面板温度内力计算提供了理论依据。更多还原

【Abstract】 The approximation solution of boundary temperature contrast effected by solar radiation is derived through the theory governing heat conduction,and the moment calculation formula and forms about reinforced concrete roof-plate in several boundary conditions are given. Finally,on the one hand,for proving the results,correctness,the results are contrasted to FEM with four clamped edges or four simply supported edges through numerical value example in existence,on the other hand,for proving the results,practicality and reliability,the results are applied to the engineering,and so a theory base is afforded for subsequent engineering design for reinforced concrete roof-plate.更多还原