摘要
分置式舟桥的垂向位移响应比带式舟桥更加敏感,准确掌握其响应特性在设计和营运中都非常重要。针对分置式舟桥垂向位移响应的非线性和复杂性,给出一种垂向动态位移的原型实验方法,该法采用视频监测技术对河中标尺进行测量,然后人工读取测点位移数据。结果显示该法精度满足要求,操作简单。分析了载荷重量、偏心程度、通车方向以及速度对分置式舟桥垂向位移响应的影响。
The vertical displacement response of the separated floating bridge is more sensitive than the ribbon bridge, accurate knowledge of its displacement response is very important in the design and operation. For the nonlinearity and complexity of its vertical displacement response, this paper presents the method of prototype test of vertical dynamic dis- placement, the method using video monitoring techniques to measure the river ruler, and then manually measured point data is read. The results showed the precision to meet the requirements and simple operation. Analysis the effects of weight of the load, the degree of eccentricity, traffic direction and moving speed to the vertical displacement response of the Separated floating bridge.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2013年第9期56-60,共5页
Journal of Wuhan University of Technology
基金
国家自然科学基金(50809019)
国防基础科研项目(A2420061100)
关键词
分置式舟桥
动态位移
原型试验
移动载荷
separated floating bridge
dynamic displacements
prototype test
moving load
