普通和高强混凝土等效矩形应力图系数通式  

General Formula for Equivalent Rectangle Stress Coefficient of Ordinary and High Strength Concrete

作　　者：丁亚进 张普[1] DING Yajin;ZHANG Pu(School of Civil Engineering,Zhengzhou University,Zhengzhou 45001,China;College of Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]郑州大学土木工程学院,郑州450001 [2]同济大学土木工程学院,上海200092

出　　处：《结构工程师》2019年第5期106-110,共5页Structural Engineers

基　　金：国家自然科学基金项目(51508519);河南省产学研项目(162107000024);河南省教育厅高等学校重点项目(14B560014,15A560040)。

摘　　要：由于目前只有等效矩形应力图系数电算结果,而没有适用于所有强度的等效矩形应力图系数通式。为了确定基于混凝土正截面受弯承载力基本假定的等效矩形应力图系数通式,采用力的等效原理,通过不定积分计算器,类比积分,从混凝土正截面受弯承载力基本假定出发,推导普通和高强混凝土受压区等效矩形应力图系数通用表达式。经运算得出了适用于所有强度的混凝土受压区等效矩形应力图系数的通式。Due to the fact that only the equivalent rectangle stress coefficient is calculated at the present time,there is no general formula for the equivalent rectangular stress coefficient of all strength.In order to determine general formula of coefficient of equivalent rectangular stress graph based on basic assumption of flexural bearing capacity of normal section of concrete beams,this paper adopted equivalent principle of force,analogized integral by indefinite integral calculator,commenced on basic assumption of flexural bearing capacity of normal section of concrete to derive the general formula of equivalent rectangular stress diagram coefficient for ordinary and high strength concrete in compressive region.The general formula of equivalent rectangle stress coefficient applicable to all strength concrete compressive zones is obtained through calculation.

关 键 词：等效矩形应力图系数 正截面受弯承载力 基本假定 不定积分 

分 类 号：O17[理学—数学]