基于BIM地铁车站空调系统风量自动计算方法

Automatic Calculation Method for Air Volume of Metro Station Air Conditioning System Based on BIM

当前地铁车站暖通BIM正向设计中,在计算空调负荷时,需在焓湿图确定每个房间的设计参数,费时费力、信息交互性差,无法充分利用BIM模型信息,难以发挥BIM软件优势。针对地铁设备区空调系统,基于BIM模型特点和Dynamo软件可视化编程,通过自动读取模型信息,编制房间人数、设备发热量等数据库,实现不同空调系统、不同房间的空调负荷自动计算,计算结果将自动赋值到模型中。该方法可解决当前BIM正向设计对模型内信息利用率低的现状,并且大大降低设计人员的基础工作量,提高设计效率,在源头上保证设计质量。

For the current BIM forward design of heating and ventilation in metro stations,the design parameters of each room have to be confirmed on the enthalpy-humidity chart when calculating the air conditioning load.Such an approach not only is time-consuming and labor-consuming,but also may lead to low-efficient information interaction,and make it difficult to give full play to BIM information and the advantages of BIM software.For air conditioning systems in the metro equipment area,automatic reading of model information,as well as database compiling(the number of people in rooms,equipment calorific value,and so on)can be carried out based on the characteristics of BIM and Dynamo visual programming,thus allowing the automatic calculation of the air conditioning load in different air conditioning systems and rooms with the results automatically assigned to the model.This will improve the current situation of low information utilization in BIM forward design,and will largely reduce the workload of basic work for designers,improve their work efficiency,and guarantee design quality from the start.