摘要
对附着式塔式起重机的自振频率及模态进行分析,经研究,塔机的振型由简单到复杂,由于塔臂较长,振型主要表现为塔臂的振动,塔身相对影响较小.塔臂是塔式起重机的薄弱环节,采取加强措施可以减轻地震灾害.
The natural frequency and mode of the attached tower crane were investigated in this paper.Results showed that the mode of the attached tower crane can change from simpleness to complexity.In addition,the vibration of tower arm is greater than that of the tower body for each model. Some strengthening measures to the tower arm can relieve the hazard brought by earthquake.
出处
《河北建筑工程学院学报》
CAS
2009年第4期83-85,共3页
Journal of Hebei Institute of Architecture and Civil Engineering
关键词
塔式起重机
振动
模态
地震
tower crane
vibration
mode
earthquake
