大跨度连续刚构桥梁应力、挠度和裂缝实时监测系统研究  

Research on Stress,Deflection and Crack Monitoring System of Long-Span Continuous Rigid-Frame Bridge

作　　者：张开洪[1] 张奔牛[1] 闫果[1] 周志祥[2] 徐勇[2] 

机构地区：[1]重庆交通大学信息科学与工程学院,重庆400074 [2]重庆交通大学土木建筑学院,重庆400074

出　　处：《重庆交通大学学报（自然科学版）》2010年第4期521-524,619,共5页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：国家自然科学基金资助项目(50808188);重庆市教委自然科学基金资助项目(KJ090426);重庆交通大学结构工程实验室开放基金资助项目(CQSLBF-Z09-7)

摘　　要：大跨度连续钢构桥梁普遍存在的病害问题是主跨跨中下挠过大和箱梁开裂。针对大跨度连续钢构桥梁病害特征及其致病因素,研究该类桥梁结构的监测方法。设计了大跨度连续钢构桥梁实时监测系统,并应用于太平庄大桥实体工程中。监测结果表明,该系统能实时地监测桥梁结构的实际损伤情况,灵敏度高,可靠性好,可广泛应用于大跨度连续刚构桥梁监测。Deflection of mid span and crack of box girder is the common disease among long-span continuous rigid-frame bridges.Methods and health monitoring system of the said bridge was studied due to its disease characteristics and causes.The monitoring system was applied in Taipingzhuang Bridge to conduct a case study.Result showed that the system could monitor actual damage of bridges;it was sensitive and reliable,therefore it could be widely used in bridge monitoring.

关 键 词：桥梁 挠度 裂缝 监测 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]