地基-公寓结构系统振动特性测试与振因分析

Testing of Apartment Building Vibration

研究了地面交通车辆导致建筑物振动的规律。对某6层钢筋混凝土框架结构公寓进行了振动测试与数据分析,获得了结构和场地的基频和阻尼比。公寓的振动是由附近行驶的车辆引起的,公寓结构水平向振动速度大于竖向。为减小公寓的振动,较经济有效的措施是改善邻近路面平顺度。

This paper investigates the effects of moving vehicle on the RC building vibration. Field vibration testing was conducted on a six-floor RC building and the ground nearby. According to the test data from the building and the ground, the dynamic characteristics （fundamental frequencies and damping ratios） of the building and the ground were obtained. The test results demonstrate that the vibration of the building was induced by the moving vehicle nearby. For the building, the measured horizontal velocity component was greater than the vertical component. The economical method to decrease the peak vibration level on the building is to improve the irregularity of the road close to the building.