欧标任意形状钢筋混凝土断面的正截面极限承载能力计算  

Calculation of ultimate limit state normal section capacity of reinforced concrete arbitrary section based on Eurocode 2

作　　者：郭士勇[1] 孙凤明 GUO Shi-yong;SUN Feng-ming(CCCC-FHDI Engineering Co.,Ltd.,Guangzhou 510230,China;China Harbor Engineering Co.,Ltd.,Beijing 100027,China)

机构地区：[1]中交第四航务工程勘察设计院有限公司,广东广州510230 [2]中国港湾工程有限责任公司,北京100027

出　　处：《水运工程》2021年第4期8-14,55,共8页Port & Waterway Engineering

摘　　要：为了提高钢筋混凝土双向受弯构件配筋的精细化程度,基于欧洲混凝土标准的设计方法对任意形状钢筋混凝土断面正截面极限承载能力进行分析,针对钢筋混凝土材料应力-应变关系中的分段特性,采用高效的动态网格更新技术和高斯积分方法对钢筋混凝土构件正截面内力进行求解并编写相关程序,该程序能输出构件配筋正截面极限承载能力的三维包络面数据,可结合构件有限元全节点内力结果分析配筋的可行性。结果表明,该方法计算速度快、精度高,同时解决了设计时仅对单一节点、单一工况验算的便利性和完备性问题。To improve the accuracy of biaxial bending member reinforcement design, we analyze the ultimate limit states capacity of the reinforced concrete arbitrary sections based on Eurocode 2,calculate the reinforced concrete normal section capacity with an efficient dynamic mesh update technique and a Gaussian integration method according to the segmented characteristics of stress-strain relationship of reinforced concrete materials,and write the related program. The compiled computer program can analyze the ultimate limit states capacity of reinforced concrete arbitrary sections,give three-dimensional envelope surface data,and analyze the feasibility of reinforcement in conjunction with the internal force results of the finite element full node. The results show that this method has fast calculation, high accuracy, and solves the problem of convenience and completeness with a single node result check.

关 键 词：欧标 动态网格 高斯积分 极限承载能力 

分 类 号：U652.7[交通运输工程—港口、海岸及近海工程]