环形起重设备的局部动力效应和抗震分析
|
摘要
对大型环形起重机设备进行抗震分析时,考虑了局部动力效应的影响及不同标高处系统加速度谱值的变化,推导了大型环形起重机设备在42.5 m标高处的地震作用及地震响应计算公式。编制了相应的计算程序,通过对实际设备的分析与计算,探讨了局部动力效应及加速度谱值变化的影响,这对工程设计具有一定的指导意义。
Anti-seismic analysis of a large annular lifting equipment is carried out under considering the influence of local dynamic effect and the change of system acceleration table value at different elevations, and the calculating formulas of the seismic action and the seismic response at 42.5 m height of elevation in the equipment are deducted. The related calculating procedure is worked out. The local dynamic effect and the influence of change of acceleration spectrum value through analysis and calculation to practical equipment are minutely investigated. These are beneficial to engineering design.
Anti-seismic analysis of a large annular lifting equipment is carried out under considering the influence of local dynamic effect and the change of system acceleration table value at different elevations, and the calculating formulas of the seismic action and the seismic response at 42.5 m height of elevation in the equipment are deducted. The related calculating procedure is worked out. The local dynamic effect and the influence of change of acceleration spectrum value through analysis and calculation to practical equipment are minutely investigated. These are beneficial to engineering design.
引文
1Anagnos-topoulos S A.在地震扰动下近海平台局部杆件的反应.国外地震工程近海平台专集（上）.北京:中国科学院力学研究所,1983
2 曲淑英,王心健,曲乃泗.任意载荷激励下梁单元局部效应分析.振动与冲击,2001,20（3）:44～47
3 Bakker A. Three-dimensional constraint effects on stress intensity distribution in plate geometries with through-thickness cracks. Fatigue Fracture, Eng. Mater. Struct., 1992,15(11): 1051-1069
2 曲淑英,王心健,曲乃泗.任意载荷激励下梁单元局部效应分析.振动与冲击,2001,20（3）:44～47
3 Bakker A. Three-dimensional constraint effects on stress intensity distribution in plate geometries with through-thickness cracks. Fatigue Fracture, Eng. Mater. Struct., 1992,15(11): 1051-1069
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心