摘要
混凝土结构配筋可以根据应力图形法和内力法两种方法进行配筋。以普通悬臂梁为例,通过有限元方法计算荷载产生的应力,在主拉应力图形配筋法的基础上,通过坐标变换等方式,得到正截面应力图形配筋法。对3种配筋方法进行比较,可以得出用应力图形法所得的配筋量比用内力法所得的结果大,用应力图形配筋法配筋能满承载能力极限状态的要求,且偏于安全,并提出了一些合理化建议。
There are two reinforcement design methods for concrete structures,which are tensile stress graph method and internal force method.As an example,Cantilever beam was analyzed by finite element method to calculate the load stress.Base on the method of main graphic tensile stress reinforcement,it can get the reinforcement method of normal section through Coordinate transformation.This text will compare the results of three methods.The quantity of reinforcement obtained by tensile stress graph method is more than that by internal force method.The quantity of reinforcement obtained by tensile stress graph method can meet the requirement of ultimate limit state,and it＇s safer.A number of rationalization proposals are given.
出处
《水科学与工程技术》
2011年第4期87-89,共3页
Water Sciences and Engineering Technology
关键词
钢筋混凝土
应力图形
有限单元
内力
reinforced concrete structure
stress graph
finite element method
internal force
