逐级应变法求解桥墩截面弯矩-曲率关系  

Solving the moment-curvature relationship of bridge pier by incremental strain method

作　　者：赖伟 LAI Wei(Sichuan Institute of Building Research,Chengdu 610081,China)

机构地区：[1]四川省建筑科学研究院有限公司,四川成都610081

出　　处：《四川建筑科学研究》2023年第1期35-39,共5页Sichuan Building Science

摘　　要：基于钢筋混凝土压弯构件可能的截面应变分布,针对截面材料组成复杂、需要分区解决的钢筋混凝土压弯构件,提出了计算轴力不变的桥墩截面弯矩-曲率关系的逐级应变法。以考虑约束混凝土的矩形截面桥墩的弯矩-曲率关系计算为例,推导了相关计算公式,阐述了逐级应变法的计算过程。Based on the possible strain distribution in the cross-section of compressive and flexural reinforced concrete members,an incremental strain method was proposed to calculate the cross-sectional moment-curvature relationship of bridge pier with constant axial force.This method can solve the relationship problems with complex material composition section,or sectional zoning needs.Taking the calculation of a rectangular section bridge pier considering confined concrete as an example,this research derived related calculation formulas and described the procedure of the proposed incremental strain method.

关 键 词：逐级应变法 桥墩 弯矩-曲率关系 约束混凝土 

分 类 号：TU375[建筑科学—结构工程]