Mander约束混凝土力学模型的修正  

Modification of constrained concrete mechanics calculation model based on Mander model

作　　者：喻晓来 田融昕 邢良忠 刘雁[1] YU Xiaolai;TIAN Rongxin;XING Liangzhong;LIU Yan(College of Civil Science&Engineering,Yangzhou University,Yangzhou 225009,China)

机构地区：[1]扬州大学建筑科学与工程学院,江苏扬州225009

出　　处：《扬州大学学报（自然科学版）》2018年第4期61-65,共5页Journal of Yangzhou University：Natural Science Edition

基　　金：江苏省科学技术厅资助项目(BY2016069-04)

摘　　要：为了使复杂参数的Mander约束混凝土单轴受压本构模型能够更好地运用于实际工程中,建立Mander模型与配箍特征值λ_v的关系,并通过试验数据分析和拟合,得到不同截面约束混凝土峰值应力和应变的修正Mander模型.计算结果表明:在我国混凝土规范要求的最小配箍特征值取值范围内,修正Mander模型具有良好的吻合度,适合我国约束混凝土力学的计算表达.In order to enable the constitutive model for confined concretes under the uniaxial compression,namely the Mander model with complex parameters,to be better applied in practical engineering,a relationship between the Mander model and the stirrup characteristic valueλv is established,and a modified Mander model relevant to the peak stress and strain of confined concretes with different cross-sections is obtained through the analysis and fitting of the experimental data.The calculation results show that the modified Mander model has good fitness in the range of the minimum stirrup characteristic value required by the specification for concretes in China,which is suitable for the calculation and expression of confined concrete mechanics in China.

关 键 词：Mander模型 峰值应力 应变 配箍特征值 约束混凝土 

分 类 号：TU311.3[建筑科学—结构工程]