基于BlM中使用区域光效法的照度计算策略

摘要

针对建筑信息模型(BIM)在建筑照度计算上所存在的缺陷,给出一种基于BIM中使用区域光效法的照度计算策略.首先利用房间属性、区域光效法照度计算公式以及设计规范建立算法模型;然后通过使用实例对该算法进行有效性测试;最后在DIALux照明仿真软件中搭建室内空间仿真模型,将其仿真出的照度值分别与区域光效算法和常用的利用系数法计算出的照度值相比较.仿真结果表明,与利用系数法相比,区域光效算法所计算出的照度值更接近仿真值、适应性强即可以计算出不同规则形状房间的照度值、无需大量查表等特点,使其更好的解决BIM所存在的照度计算问题.%Aiming at the defects of building information modeling(BIM) in architectural illumination calculation, this study proposes the illumination calculation strategy with area luminous efficacy method based on BIM. First-ly, an algorithm model was established in accordance with the room property, illumination calculation formula and the design criterion. Secondly, the model was validated by an instance. Finally, the indoor space simulation model was constructed in the DIALux illumination simulation software, and then comparisons were made between the illumination value of the simulation and the illumination value calculated by the region optical efficiency al-gorithm and the frequently-used coefficient method respectively. The results show that compared with coefficient method, the illumination value calculated by area luminous efficacy method(AIE) is closer to the simulation val-ue. It is found that AIE has strong adaptability to calculate the illumination values of the rooms in different shapes with no need of checking large quantities of tables, thus making up for the deficiency of the illumination computation in BIM.