南广河斜拉索跨越管桥动静特性测试研究

Measurement of the Static and Dynamic Characteristics of the Cable Stayed Pipe Bridge over the Nanguang River

采用测管桥结构各测点振动加速度方法实现管桥振动频率、阻尼比、振型、管桥振动加速度、速度、位移、管桥在不同清管条件下的振动位移、管桥斜拉索张力相关参数的测试;现场测量是将加速度传感器通过磁力座固定在管桥的1/2跨、1/4跨、1/8跨、支座及补偿器位置,信号经电荷放大器放大后,输送到INV-306智能信号采集处理分析仪,并存储在计算机中,然后采用DASP2000数据处理及分析软件进行分析处理,得到测试结果。

Vibration acceleration method is employed to measure the vibration frequency, damping ratio, shape of amplitude, acceleration, velocity and displacement at different point of the pipe bridge structures, and parameters relating to vibration displacement and tension of staying cables of the pipe bridge in different conditions of bridge cleaning.In the course of field measurement, acceleration sensors are fixed by magnetic bases at points of 1/2, 1/4 and 1/8 span, the two pedestals and two compensators individually, the detected signals are sent to an INV-306 Intelligent Signal Analyzer after being amplified by a charge amplifier, and then stored in a computer to be treated with DASP2000 Data Processing Software to obtain the desired results.