摘要
本文以碳纤维增强聚合物/塑料(CFRP)加固混凝土矩形截面梁的单位长度最低造价为目标函数,基于考虑材料价格,按应变协调条件和加固混凝土梁正截面承载力的计算方法,由拉格朗日函数导出了配布(筋)率优化公式,并在该公式满足相应约束和配布(筋)率优化的条件下,给出了相应的钢筋与混凝土、CFRP与混凝土价格比值范围和CFRP、钢筋及混凝土之间的价格关系.最后,用算例的计算分析验证了本文所提公式的可行性.
In this paper,taken the unit length＇s minimum cost of the concrete rectangular section beam reinforced by the carbon fiber reinforced polymer/plastic（ CFRP） as the objective function,based on considering the material price,the optimized formula of the ratio of sheet to reinforcement was derived from the Lagrange function according to the strain compatibility condition and the calculation method for the normal section bearing capacity of reinforced concrete beams,and the corresponding price ratio ranges of steel reinforcement to concrete,CFRP to concrete and the price relationship among CFRP,steel reinforcement and concrete were given under the condition that the formula satisfied the corresponding constraints and the optimization of the ratio of sheet to reinforcement. Finally,the calculation and analysis of the example was used to verify the feasibility of the formula proposed by this paper.
作者
刘相
LIU Xiang(School of City Construction,Eastern Liaoning University,Dandong 118003,China)
出处
《吉林建筑大学学报》
2018年第3期15-24,共10页
Journal of Jilin Jianzhu University
基金
辽宁省教育厅科学研究一般项目(L2015187)
关键词
碳纤维增强聚合物/塑料(CFRP)加固混凝土梁
配布(筋)率优化
造价
价格
钢筋
concrete beams reinforced by the carbon fiber reinforced polymer/plastic（CFRP）
optimization of the ratio of sheet to reinforcement
cost
price
steel reinforcement
