基于BIM仿真与多目标决策的网架结构安装方案优选

Optimization of Construction Schemes for a Grid Structure Based on BIM and Multiple-objectivedecision

杭州市上城区体育中心工程为叠合式体育综合场馆,该工程屋盖采用双层正放四角锥形网架结构。为保证网架施工质量、安全、经济、高效,将BIM技术与多目标决策理论相结合,利用BIM技术对备选方案进行仿真分析,运用多目标决策理论建立优化模型,得到相对最优的网架施工方案。该方法充分利用BIM技术优势,避免多目标决策过程中量化结果的失真,减小优化过程的随机误差,保证优选结果的准确性和合理性。

The Shangcheng District Sports Center Project in Hangzhou is a stacked comprehensive sports building,in which the roof is made of a double-layered,four-corner and cone-shaped grid structure.In order to ensure the quality,safety,economy and efficiency of grid roof construction,this paper proposes an integration method combing BIM technology with multiple-objectivedecision theory.In the method,the BIM technology is employed to simulate the construction process and derive the key parameters of the construction scheme candidates.The multiple-objectivedecision theory is employed to establish an optimization model,from which the optimal construction scheme could be obtained.The proposed method is able to make full use of the BIM and overcome the disadvantage of the multiple-objectivedecision process.During optimization,the random error in the quantification process is also reduced to ensure the accuracy and rationality of the optimal result.