钢筋混凝土受压构件正截面承载力的数值算法  

Research on Numerical Algorithm for Calculating the Bearing Capacity of Normal Cross Section of Reinforced Concrete Compression Member

作　　者：王伟[1,2] 宋坤[3] 

机构地区：[1]浙江建设职业技术学院,浙江杭州311231 [2]同济大学土木工程学院,上海200092 [3]燕山大学建筑工程与力学学院,河北秦皇岛066004

出　　处：《建筑科学》2014年第5期19-25,共7页Building Science

基　　金：浙江省住房与城乡建设项目(2013Z005)

摘　　要：为了克服数值积分法正向计算钢筋混凝土受压构件正截面承载力时因4参数所形成的大量计算问题,以及中和轴位置不能定义在无穷远处的问题,依据《混凝土结构设计规范》(GB 50010—2010)附录E所阐述的截面应变计算假定、正截面承载力极限状态下的截面应变特征以及数值积分法计算正截面内力的公式,构建基于极限状态下截面应变分布的逆向计算正截面承载力的方法,最后通过构造程序算法以及编制电算程序,以实际算例证实了方法的可靠性和相对高效性。In order to ease the calculation caused by four nested loops,as well as to avoid disability of placing neutral axis to infinity,when analyzing the bearing capacity of normal cross section of RC compressed member by execute numerical integral method,a reverse calculation methods as well as a corresponding algorithm to calculate the internal forces of normal section are developed, according the calculating hypothesis of section strain, characteristic of section strain under the condition of ultimate bearing capacity,which are presented by appendix E in code GB 50010—2010. Accordingly,a program is developed which proves the higher efficiency and the perfection of the new-constructed algorithm by analyzing several examples.

关 键 词：钢筋混凝土 受压构件 正截面承载力 数值积分 算法 

分 类 号：TU375[建筑科学—结构工程]