装配式钢混组合结构加固时抗震性能模糊综合评估模型研究

A Fuzzy Comprehensive Evaluation Model for Seismic Behavior of Assembled Steel-Concrete Composite Structures

参数化的装配式钢混组合结构建筑信息模型缺少结构信息描述,无法实现装配式钢混组合结构图档的修正和自主更新,对结构构件的损伤评估效果差,抗震加固性能差。据此提出用于装配式钢混组合结构抗震加固的建筑信息模型,模型框架包括建筑设计模型、结构设计模型、结构抗震加固设计和损伤评估;通过结构构件的实体定义、属性定义和关联性定义,全面描述柱、梁、板和墙等钢混组合结构构件的抗震加固性能信息;采用模糊加固评估方法获取精准的结构构建综合损伤指数,评估结构构件的加固等级,提高抗震加固性能。经实验证明,所设计模型得到的结构损伤指数与实际损伤指数的误差低于0.03,说明该模型分析装配式钢混组合结构抗震加固性能准确性较高。

The current parameterized building information model of assembled steel-concrete composite structures lacks structural information and cannot realize the modification and self-renewal of the drawings of assembled steel-concrete composite structures.Therefore,both the damage assessment effect of structural members and the seismic reinforcement performance are poor.This paper presents a building information model for seismic reinforcement of assembled steel-concrete composite structures.The model framework included a building design model,a structural design model,a seismic reinforcement design of the building,and damage assessment.Through solid definition,attribute definition,and association definition of structural members,the seismic strengthening performance information regarding the steel-concrete composite structural members,i.e.,columns,beams,slabs,and walls,was comprehensively described.The accurate comprehensive damage index of structural members was obtained to evaluate the reinforcement grade of the structural members by using a fuzzy reinforcement evaluation method.The experimental results showed that the error between the damage index obtained by the proposed model and the actual damage index was < 0.03,which indicated that the accuracy of the model for seismic reinforcement of assembled steel-reinforced composite structures is relatively high.