混凝土小型空心砌块建筑温度场的数值模拟

【摘要】 裂缝问题严重影响了混凝土小型空心砌块建筑的推广应用。综合分析影响建筑物温度场的各种因素:包括太阳辐射、空气对流、各种长波辐射等,结合传热学理论,借助有限元计算软件ANSYS,对试点建筑屋面和墙体外表面进行了典型日逐时温度的数值模拟,与实测结果吻合较好,说明采用有限元方法,综合考虑多种影响因素进行温度场计算是可行的,模拟结果可为温度应力计算提供温度参数。更多还原

【Abstract】 Cracking has serious inf luence on popularization of building with small concrete hollow block.Com pre hen sive a nalysis has been made on various factors that have effect on architectural tempe rature field including so lar ra di ation,air con-vection and various long wav e radiations etc.Numerical simulation of typical day hourly tempera ture at tes ting building roof and wall exterior surface was made in combination with heat t ransfer theory and with the aid of finite ele ment calcula tion software ANSYS and the result is identical to actual measurement.It shows that adopting finit e element method,taking into comprehen-sive consideration of various factors ,temperature field calcula tion is feasible.The result of simulation can be ap plied as tem-perature parameter for calculating temperature stress.更多还原