基于BIM技术与模拟退火算法的村镇轻钢框架结构智能设计方法

Intelligent design of rural light steel frame structure based on BIM and simulated annealing algorithm

传统村镇住宅结构设计需要进行大量的人工试算与重复建模,而受制于建设成本,村镇住宅无法像城镇住宅一样通过设计师进行专业的结构设计与验算,其安全性与经济性均难以满足要求。为此,提出一种村镇轻钢框架结构智能设计方法,包括智能建模与智能优化两个环节。基于图层自动识别算法、光学字符识别技术、自适应分块算法提出村镇轻钢框架结构BIM智能建模方法,包括图层识别、轴文本数据提取、墙体轮廓提取等,智能建模结果基本满足实际工程要求。基于提出的两阶段模拟退火算法给出村镇轻钢框架结构的智能优化方法,优化速度较快,优化效果良好。通过实际工程案例对提出的智能设计方法进行验证,结果表明,提出的村镇轻钢框架结构智能设计方法具有可行性,与传统的人工设计方法相比,设计周期可缩短70%以上,材料用量、结构设计指标接近人工设计结果。

In the traditional structural design process,rural buildings require a lot of manual calculations and repeated modeling.However,due to the constraint of construction cost,they cannot be designed and checked professionally as urban types,and the safety and economy are difficult to meet the requirements.In this study,an intelligent design approach for structural design of rural light steel frame structure was proposed,including the intelligent modeling and optimization.Based on the automatic layer classification method(ALCM),optical character recognition technology(OCR)and adaptive block algorithm,BIM intelligent modeling method was proposed where layer recognition,the extraction of axis text data and wall contour were included,and generated structural models satisfied the requirements of engineering practice.Based on the proposed two-stage simulated annealing algorithm,the intelligent optimization method was proposed and verified by case histories.Results showed that the proposed intelligent design method was feasible.Compared with the traditional method,its time use could be shortened by more than 70%,and the material consumption and structural design parameters were similar.