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针对塔式起重机的抗震分析研究中没有考虑建筑结构与塔式起重机相互作用的影响,本文建立了建筑结构与塔式起重机相互作用体系的整体结构有限元模型,通过整体分析得到了相互作用体系中塔式起重机的地震反应,并与刚性建筑结构假定情况下的计算结果进行了对比。为了简化分析过程,本文提出了将建筑结构简化为弹簧-阻尼支座的简化计算模型,并验证了简化模型的可行性与有效性。研究表明:相互作用体系的塔机地震位移、加速度及内力响应有较大幅度增大,相互作用效果不能忽略,并且将建筑结构等效为弹簧-阻尼支座的简化方法是可行的。
Aiming at the seismic analysis of tower crane, the influence of the interaction between building structure and tower crane is not considered. In this paper, the overall structure finite element model of the interaction between building structure and tower crane is established. Through the overall analysis, The seismic response of the tower crane is compared with the calculated results under the assumption of rigid structure. In order to simplify the analysis process, this paper presents a simplified computational model that simplifies the building structure to a spring-damping pedestal and verifies the feasibility and effectiveness of the simplified model. The results show that the interaction between the tower crane and the tower crane increases greatly with the seismic displacement, acceleration and internal force response, and the interaction effect can not be neglected. A simplified method of equivalently building a spring-damping bearing is feasible.