摘要
动静载试验是认识桥梁运行状态的一个基本方法,是对桥梁养护和维修的一项必备工作。钢管混凝土拱桥在投入使用一段时间后,受到综合车辆、人为以及自然因素影响,各个构件可能会有不同程度的损伤。因此,定期对一些交通量较大或者位于主干道路的钢管混凝土拱桥进行动静载试验是很必要的。采取对既有拱桥的理论计算数据和实际测得数据对比的方法进行分析。分析结果表明,桥梁处于比较良好的弹性受力状态,刚度满足要求,具有较好的动力特性。
The dynamic and static load test is a basic method to understand the operation status of bridge,and also an essential work for the maintenance of bridge.After service for a period of time,the concrete filled steel tubular arch bridge will go through damages on components in different levels,due to the effect of the integrated vehicles,anthropic and natural factors.Therefore,it is necessary to carry out dynamic and static load tests on some concrete filled steel tubular arch bridges with large traffic volume or located on trunk roads.This paper analyzed the comparison results between the theoretical calculation data and the actual measurement data of existing arch bridges.The results show that the bridge is in a relatively good elastic strained condition,meets the stiffness requirements,and has superior dynamic characteristics.
作者
孙志鹏
雷刚
Sun Zhipeng;Lei Gang(College of Construction Engineering,Jilin University,Changchun 130026,China)
出处
《甘肃科学学报》
2019年第6期93-98,共6页
Journal of Gansu Sciences
关键词
钢管混凝土拱桥
挠度
应变
自振频率
Concrete filled steel tubular arch bridge
Deflection
Strain
Natural frequency
作者简介
孙志鹏(1996-),男,吉林长春人,硕士研究生,研究方向为桥梁与隧道工程。E-mail:295506548@qq.com;通讯作者:雷刚,E-mail:384583761@qq.com。
