基于抗震性能的密肋复合墙体优化设计及造价影响分析

Optimization design and influence analysis of cost of multi-ribbed composite wall based on seismic performance

密肋壁板结构是一种全新的节能建筑结构体系,密肋复合墙体是密肋壁板结构的主要组成部分和受力部分。针对单片密肋复合墙体进行基于抗震性能的优化设计研究。在优化过程中,选取墙体构件几何参数为设计变量,建立以墙体造价最小为优化目标、承载力和墙体截面尺寸为约束条件的密肋复合墙体构件优化设计数学模型。针对优化问题类型,采用序列二次规划法(SQP)在MATLAB软件系统上进行优化计算。对优化结果分析、比较,提出造价影响系数的概念,就各设计变量对密肋复合墙体造价的影响进行讨论。

Multi-ribbed slab structure(MRSS),as a new structural system showing good structural property,is very potential.Multi-ribbed composite wall is a mayor component and stressed member of MRSS.The optimum design based on seismic performance of a single multi-ribbed composite wall was developed.During the process of subsection optimization,based on the selection of optimization design variables with geometric parameter of multi-ribbed composite wall,the mathematical model whose objective is minimum cost and constraint conditions are load capacity and section size was set up.Besides this,the optimization computation was also performed by sequential quadratic programming method with MATLAB.Finally,based on the analysis and comparison of the optimal solutions and the introduction of influence coefficients of cost,the influence of design variables on cost was discussed.