地震对传输塔影响的研究

Research on the Effects of Earthquake to Transmission Tower

用MARC软件对传输塔进行模态分析,求出结构的自振周期;其次,将传输塔分层,求出结构的重力荷载代表值,再根据建筑场地类别、设防烈度等条件和地震基本理论求出水平地震作用和竖向地震作用;然后利用地震和有限元理论,用MARC软件对其进行静力分析。根据应力、位移情况观察其危险点,并将其结果与没有地震作用的情况相比较。

A model of the tower is established with the software of MARC and analyzed by dynamic model analyzing, and natural frequencys of the tower are obtained. Then, the model of the tower is sliced, and gravitation of every level was obtained, and according to the sort of building field and defending strenth etc, we obtain the horizontal earthquake function and the vertical earthquake function with the basic theories analyzing and the software of MARC. According to stress and displacement,we can know the dangerous point of the tower, and compare its result with the tower only suffer gravity and load of electric cable.