基于推力影响线的含拱上分布荷载两铰拱结构损伤识别研究  

RESEARCH ON DAMAGE IDENTIFICATION OF TWO-HINGED ARCH STRUCTURES CONTAINING DISTRIBUTED LOADS ON THE ARCH BASED ON THRUST INFLUENCE LINE

作　　者：贾之俊 张德伟 周明扬 JIA Zhi-jun;ZHANG De-wei;ZHOU Ming-yang(School of Civil Engineering,Anhui Jianzhu University,Hefei 230601,China)

机构地区：[1]安徽建筑大学土木工程学院,安徽合肥230601

出　　处：《南阳理工学院学报》2025年第2期70-80,共11页Journal of Nanyang Institute of Technology

基　　金：安徽省新时代育人质量工程研究生创新创业实践项目(2023cxcysj124);安徽省高校省级自然科学研究项目-重点项目(2022AH050248);建筑健康监测与灾害预防国家与地方联合工程实验室开放课题(GG22KF002)。

摘　　要：拱肋作为拱结构主要的受力构件,其结构稳定性十分重要。针对目前含分布荷载两铰拱结构的损伤识别研究尚不完善的现状,提出一种基于推力影响线差值曲率的损伤识别方法,对俩铰拱结构进行损伤识别研究,该方法采用力法方程进行理论分析,并推导出含拱上分布荷载时拱肋的推力影响线表达式,建立损伤识别方法的理论支撑,通过表达式证明推力影响线差值曲率新指标在理论上具有识别含分布荷载两铰结构损伤的作用。通过有限元模拟,证明该方法在识别含拱上分布荷载的两铰拱结构损伤具有较好的定位效果。Arch rib is the main stressed component of arch structure,and its structural stability is very important.In view of the current situation that the damage identification research of two-hinged arch structure with distributed load is not perfect,a damage identification method based on the influence of thrust on line difference curvature is proposed to carry out damage identification research on two-hinged arch structure.The method adopts the force method equation for theoretical analysis.The expression of thrust influence line of arch rib with distributed load on arch is derived,and the theoretical support of damage identification method is established.It is proved by the expression that the new index of thrust influence line difference curvature can identify the damage of two-hinge structure with distributed load in theory.Through finite element simulation,it is proved that this method has good location effect in identifying damage of two-hinged arch structure with distributed load on arch.

关 键 词：结构工程 推力影响线解析表达 推力影响线差值曲率 损伤识别 两铰拱 

分 类 号：TU311[建筑科学—结构工程] TU997