(1 中衡设计集团股份有限公司, 苏州 215123;2 东南大学土木工程学院, 南京 210096)

摘要: 超高层结构设计中指标往往具有相关性,通过手动调整计算模型以实现结构设计的合理性和经济性效率较低. 通过 Grasshopper 软件平台二次开发,编制了超高层结构参数化建模模块,通过 OAPI 接口调用 ETABS 进行结构自动化分析设计,并采用遗传算法实现了专项优化设计. 针对采用基本遗传算法进行结构体量大、变量多、约束条件复杂的参数化设计时计算耗时长的特点,采取多项措施对算法进行了改进,有效提高了优化效率和稳定性.以结构质量为优化目标,将框架柱与剪力墙截面尺寸作为主要设计参数对某超高层结构进行参数化设计. 结果表明,优化后的超高层结构在罕遇地震作用下具有良好的抗震性能,且结构总质量明显降低,优化效果显著,验证了本文参数化技术的可行性与可靠性.

关键词: 参数化技术;超高层结构;Grasshopper 软件;改进遗传算法;动力弹塑性分析

中图分类号:TU318+. 1 文献标志码:A 文章编号:1002-848X(2022)20-0029-09

DOI:10.19701 / j.jzjg.ZJ220006

Application of parametric technology in the design of super high-rise structures

YANG Lülei1, ZHANG Jin1,2, SUN Yibin1, WANG Hui1, GONG Minfeng1

(1 ARTS Group Co. , Ltd. , Suzhou 215123, Chinaꎻ2 School of Civil Engineering, Southeast University, Nanjing 210096, China)

Abstract: The indexes in the design of super high-rise structures are generally relevant. It is inefficient to manually adjuststructural calculation models to realize the rationality and economy of structural design. Based on the secondarydevelopment of Grasshopper software platform, a parametric modeling module for super high-rise structures was established,in which ETABS was called through the OAPI interface for automatic structural analysis and design, and a genetic algorithmwas used to realize the special optimization design. Considering the characteristic of long time-consuming calculation in thedesign of parametric structures with large volume, many variables and complex constraints using the basic geneticalgorithm, a number of measures were taken to improve the algorithm, which effectively improves the optimization efficiencyand stability. Taking structural mass as the optimization objective, a super high-rise structure was parametrically designedregarding section sizes of frames column and shear walls as the primary design parameters. The results show that theoptimized super high-rise structure has good seismic performance under rare earthquake, the total mass of the structure isobviously reduced, and the optimization effect is remarkable, which verifies the feasibility and reliability of theparameterization technology in this paper.

Keywords:parametric technology;super high-rise structure;Grasshopper software;improved genetic algorithm;dynamicelastic-plastic analysis

∗中衡设计集团科研项目(2021-S1):数字技术在结构设计中的应用研究.

第一作者:杨律磊,硕士,高级工程师,一级注册结构工程师,主要从事复杂结构设计与技术研究工作,Email: yanglvlei@artsgroup. cn.

[引用本文] 杨律磊,张谨,孙意斌,等. 参数化技术在超高层结构设计中的应用[J]. 建筑结构,2022,52(20):29-37. YANG Lülei,ZHANG Jin,SUN Yibin,et al. Application of parametric technology in the design of super high-risestructures[J]. Building Structure,2022,52(20):29-37.