中小跨径混凝土梁式桥军事装备通过性快速检测评估技术研究  

Research on Fast Detection and Evaluation Technology of Military Vehicle Trafficability on Small and Medium Span RC Beam Bridge

作　　者：刘锡鑫[1] 李海超[1] 常春伟[1] 赵康[1] 安昭超 

机构地区：[1]军事交通学院军事交通系,天津300161 [2]驻青藏铁路公司军代处,拉萨850000

出　　处：《军事交通学院学报》2012年第3期9-14,共6页Journal of Military Transportation University

摘　　要：从承载能力和正常使用2种极限状态指标的本质关系入手，提出将挠跨比作为军事装备通过性的评估指标。通过无损检测得到桥梁的简单信息，利用ANSYS进行快速建模；根据小荷载静力试验结果修正桥梁有限元模型；利用修正后的有限元模型开展模拟试验得到军事装备作用下的挠跨比；确定相应的挠跨比评估标准；最后对桥梁的军事装备通过性做出判断。模拟试验结果表明通过性快速检测评估技术简单可行。By studying the essential connection of serviceability and ultimate limit states index, this paper takes deflection - to - span ratio as evaluation index for trafficability. Then proposes that make use of the large general finite - element procedure ANSYS. Firstly, establishing the finite - element model of bridge basing on the brief information that is gained by non- destructive detection ; Secondly, modifying the finite - element model by comparing the result of simulation analysis to the result of static load test;Thirdly, carrying out an simulation experiment with the finite -element model, working out the de- flection - to - span ratio of bridge under military vehicle load ; Fourthly, fixing on certain evaluation standards ; At last, evaluating the military vehicle trafficability on bridge. The results of a simulation experiment with an RC T - beam indicate that this technology is convenient and credible.

关 键 词：中小跨径混凝土梁式桥 军事装备 通过性 快速检测评估 

分 类 号：U448.21[建筑科学—桥梁与隧道工程]