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黑龙江电视台建筑结构由主楼及东、西两侧楼组成。主楼地上建筑十七层,地下建筑二层,系钢筋混凝土框架结构。到目前,电视台投入使用己近十年,但其动力特性参数——固有频率、主振型、阻尼等参数还待研究。本文研究的目的在于通过环境随机激振,对电视台主楼的动力特性参数进行研究,测出主楼南北、东西方向弯曲振动的一、二阶固有频率;一、二阶主振型及弯曲、扭
Heilongjiang TV station building structure consists of the main building and the east and west sides of the building. The main building has 17 floors on the ground, and the second floor of the underground building is a reinforced concrete frame structure. Until now, television stations have been in operation for nearly a decade, but the parameters of their dynamic characteristics—natural frequency, main mode shape, and damping—are yet to be studied. The purpose of this paper is to study the dynamic characteristic parameters of the main building of the TV station through random excitation of the environment, and to measure the first and second-order natural frequencies of the north-south and east-west bending vibrations of the main building; first and second-order main modes and bending and twisting.